Patent Publication Number: US-2022224460-A1

Title: Maximum sensitivity degradation

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     Pursuant to 35 U.S.C. § 119 (a), this application claims the benefit of Korean Patent Application No. 10-2021-0004861, filed on Jan. 13, 2021, the contents of which are all hereby incorporated by reference herein in their entirety. 
     Technical Field 
     The present disclosure relates to mobile communication. 
     Background 
     3rd generation partnership project (3GPP) long-term evolution (LTE) is a technology for enabling high-speed packet communications. Many schemes have been proposed for the LTE objective including those that aim to reduce user and provider costs, improve service quality, and expand and improve coverage and system capacity. The 3GPP LTE requires reduced cost per bit, increased service availability, flexible use of a frequency band, a simple structure, an open interface, and adequate power consumption of a terminal as an upper-level requirement. 
     Work has started in international telecommunication union (ITU) and 3GPP to develop requirements and specifications for new radio (NR) systems. 3GPP has to identify and develop the technology components needed for successfully standardizing the new RAT timely satisfying both the urgent market needs, and the more long-term requirements set forth by the ITU radio communication sector (ITU-R) international mobile telecommunications (IMT)-2020 process. Further, the NR should be able to use any spectrum band ranging at least up to 100 GHz that may be made available for wireless communications even in a more distant future. 
     The NR targets a single technical framework addressing all usage scenarios, requirements and deployment scenarios including enhanced mobile broadband (eMBB), massive machine-type-communications (mMTC), ultra-reliable and low latency communications (URLLC), etc. The NR shall be inherently forward compatible. 
     Conventionally, for power class  2  User Equipment (UE), the impact of self interference, such as harmonics and/or Intermodulation Distortion (IMD), on some E-UTRA NR Dual Connectivity (EN-DC) band combinations and on some inter-band Carrier Aggregation (CA) band combinations has not been analyzed. The total power boosting impact with 3 dB shall be analyzed in the receiver side by dual uplink transmission since the IMD source also will be increased by the 3 dB boosting each transmitted carrier. Herein, “total power boosting impact with 3 dB” occurs because maximum output power of the power class  2  is 3 dB bigger than maximum outpout power of conventional power class  3 . However, the Maximum Sensitivity Degradation (MSD) values have not been discussed for these cases in previous 3GPP work. 
     Also, for power class  2  UE, the impact of cross band isolations, which means interference on Rx(reception) band due to small frequency interval between Tx(Transmission) carrier/frequency in X band (operating band X) and the Rx carrier/frequency in Y band (operating band Y), on some inter-band EN-DC band combinations and on some inter-band NR CA band combinations has not been analyzed. Thus, Maximum Sensitivity Degradation (MSD) values have not been discussed for these cases. 
     SUMMARY 
     Accordingly, a disclosure of the present specification has been made in an effort to solve the aforementioned problem. 
     Accordingly, a disclosure of the present specification has been made in an effort to solve the aforementioned problem. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a UE in a wireless communication system, the UE comprising: at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: transmitting, via the at least one transceiver, an uplink signal via one NR operating band among the two NR operating bands; and receiving, via the at least one transceiver, a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a method for performing communication, the method performed by a UE. The method comprises: transmitting an uplink signal via one New Radio (NR) operating band among two NR operating bands; receiving a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a wireless device operating in a wireless communication system, the wireless device comprising: at least processor configured to use Carrier Aggregation (CA) based on two New Radio (NR) operating bands, at least one computer memory operably connectable to the at least one processor, wherein the at least one processor is configured to perform operations comprising: generating an uplink signal via one NR operating band among the two NR operating bands; and identifying a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides At least one computer readable medium (CRM) storing instructions that, based on being executed by at least one processor, perform operations comprising: generating an uplink signal via one New Radio (NR) operating band among two NR operating bands, identifying a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a UE in a wireless communication system, the UE comprising: at least one transceiver; at least one processor; and at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: transmitting, via the at least one transceiver, an uplink signal via the one NR operating band; and receiving, via the at least one transceiver, a downlink signal via the one E-UTRA operating band. 
     In accordance with an embodiment of the present disclosure, a disclosure of the present specification provides a method for performing communication, the method performed by a UE. The method comprises: transmitting an uplink signal via one New Radio (NR) operating band; and receiving a downlink signal via the one E-UTRA operating band. 
     According to a disclosure of the present disclosure, the above problem of the related art is solved. 
     For example, the impact of harmonics, IMD, and/or cross band isolations on some EN-DC band combinations or some inter-band CA band combinations are analyzed and the MSD are determined. 
     Advantageous effects which can be obtained through specific embodiments of the present disclosure are not limited to the advantageous effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand and/or derive from the present disclosure. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows an example of a communication system to which implementations of the present disclosure is applied. 
         FIG. 2  shows an example of wireless devices to which implementations of the present disclosure is applied. 
         FIG. 3  shows an example of a wireless device to which implementations of the present disclosure is applied. 
         FIGS. 4A to 4C  are diagrams illustrating exemplary architecture for a next-generation mobile communication service. 
         FIG. 5  shows a frame structure in a 3GPP based wireless communication system to which implementations of the present disclosure is applied. 
         FIG. 6 a    illustrates a concept view of an example of intra-band contiguous CA.  FIG. 6 b    illustrates a concept view of an example of intra-band non-contiguous CA. 
         FIG. 7 a    illustrates a concept view of an example of a combination of a lower frequency band and a higher frequency band for inter-band CA.  FIG. 7 b    illustrates a concept view of an example of a combination of similar frequency bands for inter-band CA. 
         FIG. 8  illustrates an example of non-linearity caused by active component in the UE. 
         FIG. 9  illustrates an example of situation in which an uplink signal transmitted via an uplink operating band affects reception of a downlink signal on via downlink operating band. 
         FIG. 10  illustrates an example of cross-band isolation issue for PC 2  EN-DC with band combination of NR operating band n 41  and E-UTRA operating band  66 . 
         FIG. 11  illustrates an example of IMD issue for PC 2  EN-DC with band combination of downlink bands n 77 ,  66  and uplink bands n 77 ,  66 .\ 
         FIG. 12  illustrates an example of cross-band isolation issue for PC 2  inter-band CA with band combination of NR operating band n 41  and n 77 . 
         FIG. 13  illustrates an example of IMD issue for PC 2  inter-band CA with band combination of downlink bands n 77 , n 66  and uplink bands n 77 , n 66 . 
         FIG. 14  is a flow chart showing an example of a procedure of a UE according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The following techniques, apparatuses, and systems may be applied to a variety of wireless multiple access systems. Examples of the multiple access systems include a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, and a multicarrier frequency division multiple access (MC-FDMA) system. CDMA may be embodied through radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be embodied through radio technology such as global system for mobile communications (GSM), general packet radio service (GPRS), or enhanced data rates for GSM evolution (EDGE). OFDMA may be embodied through radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, or evolved UTRA (E-UTRA). UTRA is a part of a universal mobile telecommunications system (UMTS). 3rd generation partnership project (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE employs OFDMA in DL and SC-FDMA in UL. Evolution of 3GPP LTE includes LTE-A (advanced), LTE-A Pro, and/or 5G NR (new radio). 
     For convenience of description, implementations of the present disclosure are mainly described in regards to a 3GPP based wireless communication system. However, the technical features of the present disclosure are not limited thereto. For example, although the following detailed description is given based on a mobile communication system corresponding to a 3GPP based wireless communication system, aspects of the present disclosure that are not limited to 3GPP based wireless communication system are applicable to other mobile communication systems. 
     For terms and technologies which are not specifically described among the terms of and technologies employed in the present disclosure, the wireless communication standard documents published before the present disclosure may be referenced. 
     In the present disclosure, “A or B” may mean “only A”, “only B”, or “both A and B”. In other words, “A or B” in the present disclosure may be interpreted as “A and/or B”. For example, “A, B or C” in the present disclosure may mean “only A”, “only B”, “only C”, or “any combination of A, B and C”. 
     In the present disclosure, slash (/) or comma (,) may mean “and/or”. For example, “A/B” may mean “A and/or B”. Accordingly, “A/B” may mean “only A”, “only B”, or “both A and B”. For example, “A, B, C” may mean “A, B or C”. 
     In the present disclosure, “at least one of A and B” may mean “only A”, “only B” or “both A and B”. In addition, the expression “at least one of A or B” or “at least one of A and/or B” in the present disclosure may be interpreted as same as “at least one of A and B”. 
     In addition, in the present disclosure, “at least one of A, B and C” may mean “only A”, “only B”, “only C”, or “any combination of A, B and C”. In addition, “at least one of A, B or C” or “at least one of A, B and/or C” may mean “at least one of A, B and C”. 
     Also, parentheses used in the present disclosure may mean “for example”. In detail, when it is shown as “control information (PDCCH)”, “PDCCH” may be proposed as an example of “control information”. In other words, “control information” in the present disclosure is not limited to “PDCCH”, and “PDDCH” may be proposed as an example of “control information”. In addition, even when shown as “control information (i.e., PDCCH)”, “PDCCH” may be proposed as an example of “control information”. 
     Technical features that are separately described in one drawing in the present disclosure may be implemented separately or simultaneously. 
     Although not limited thereto, various descriptions, functions, procedures, suggestions, methods and/or operational flowcharts of the present disclosure disclosed herein can be applied to various fields requiring wireless communication and/or connection (e.g., 5G) between devices. 
     Hereinafter, the present disclosure will be described in more detail with reference to drawings. The same reference numerals in the following drawings and/or descriptions may refer to the same and/or corresponding hardware blocks, software blocks, and/or functional blocks unless otherwise indicated. 
       FIG. 1  shows an example of a communication system to which implementations of the present disclosure is applied. 
     The 5G usage scenarios shown in  FIG. 1  are only exemplary, and the technical features of the present disclosure can be applied to other 5G usage scenarios which are not shown in  FIG. 1 . 
     Three main requirement categories for 5G include (1) a category of enhanced mobile broadband (eMBB), (2) a category of massive machine type communication (mMTC), and (3) a category of ultra-reliable and low latency communications (URLLC). 
     Partial use cases may require a plurality of categories for optimization and other use cases may focus only upon one key performance indicator (KPI). 5G supports such various use cases using a flexible and reliable method. 
     eMBB far surpasses basic mobile Internet access and covers abundant bidirectional work and media and entertainment applications in cloud and augmented reality. Data is one of 5G core motive forces and, in a 5G era, a dedicated voice service may not be provided for the first time. In 5G, it is expected that voice will be simply processed as an application program using data connection provided by a communication system. Main causes for increased traffic volume are due to an increase in the size of content and an increase in the number of applications requiring high data transmission rate. A streaming service (of audio and video), conversational video, and mobile Internet access will be more widely used as more devices are connected to the Internet. These many application programs require connectivity of an always turned-on state in order to push real-time information and alarm for users. Cloud storage and applications are rapidly increasing in a mobile communication platform and may be applied to both work and entertainment. The cloud storage is a special use case which accelerates growth of uplink data transmission rate. 5G is also used for remote work of cloud. When a tactile interface is used, 5G demands much lower end-to-end latency to maintain user good experience. Entertainment, for example, cloud gaming and video streaming, is another core element which increases demand for mobile broadband capability. Entertainment is essential for a smartphone and a tablet in any place including high mobility environments such as a train, a vehicle, and an airplane. Other use cases are augmented reality for entertainment and information search. In this case, the augmented reality requires very low latency and instantaneous data volume. 
     In addition, one of the most expected 5G use cases relates a function capable of smoothly connecting embedded sensors in all fields, i.e., mMTC. It is expected that the number of potential Internet-of-things (IoT) devices will reach  204  hundred million up to the year of 2020. An industrial IoT is one of categories of performing a main role enabling a smart city, asset tracking, smart utility, agriculture, and security infrastructure through 5G. 
     URLLC includes a new service that will change industry through remote control of main infrastructure and an ultra-reliable/available low-latency link such as a self-driving vehicle. A level of reliability and latency is essential to control a smart grid, automatize industry, achieve robotics, and control and adjust a drone. 
     5G is a means of providing streaming evaluated as a few hundred megabits per second to gigabits per second and may complement fiber-to-the-home (FTTH) and cable-based broadband (or DOCSIS). Such fast speed is needed to deliver TV in resolution of 4K or more (6K, 8K, and more), as well as virtual reality and augmented reality. Virtual reality (VR) and augmented reality (AR) applications include almost immersive sports games. A specific application program may require a special network configuration. For example, for VR games, gaming companies need to incorporate a core server into an edge network server of a network operator in order to minimize latency. 
     Automotive is expected to be a new important motivated force in 5G together with many use cases for mobile communication for vehicles. For example, entertainment for passengers requires high simultaneous capacity and mobile broadband with high mobility. This is because future users continue to expect connection of high quality regardless of their locations and speeds. Another use case of an automotive field is an AR dashboard. The AR dashboard causes a driver to identify an object in the dark in addition to an object seen from a front window and displays a distance from the object and a movement of the object by overlapping information talking to the driver. In the future, a wireless module enables communication between vehicles, information exchange between a vehicle and supporting infrastructure, and information exchange between a vehicle and other connected devices (e.g., devices accompanied by a pedestrian). A safety system guides alternative courses of a behavior so that a driver may drive more safely drive, thereby lowering the danger of an accident. The next stage will be a remotely controlled or self-driven vehicle. This requires very high reliability and very fast communication between different self-driven vehicles and between a vehicle and infrastructure. In the future, a self-driven vehicle will perform all driving activities and a driver will focus only upon abnormal traffic that the vehicle cannot identify. Technical requirements of a self-driven vehicle demand ultra-low latency and ultra-high reliability so that traffic safety is increased to a level that cannot be achieved by human being. 
     A smart city and a smart home/building mentioned as a smart society will be embedded in a high-density wireless sensor network. A distributed network of an intelligent sensor will identify conditions for costs and energy-efficient maintenance of a city or a home. Similar configurations may be performed for respective households. All of temperature sensors, window and heating controllers, burglar alarms, and home appliances are wirelessly connected. Many of these sensors are typically low in data transmission rate, power, and cost. However, real-time HD video may be demanded by a specific type of device to perform monitoring. 
     Consumption and distribution of energy including heat or gas is distributed at a higher level so that automated control of the distribution sensor network is demanded. The smart grid collects information and connects the sensors to each other using digital information and communication technology so as to act according to the collected information. Since this information may include behaviors of a supply company and a consumer, the smart grid may improve distribution of fuels such as electricity by a method having efficiency, reliability, economic feasibility, production sustainability, and automation. The smart grid may also be regarded as another sensor network having low latency. 
     Mission critical application (e.g., e-health) is one of 5G use scenarios. A health part contains many application programs capable of enjoying benefit of mobile communication. A communication system may support remote treatment that provides clinical treatment in a faraway place. Remote treatment may aid in reducing a barrier against distance and improve access to medical services that cannot be continuously available in a faraway rural area. Remote treatment is also used to perform important treatment and save lives in an emergency situation. The wireless sensor network based on mobile communication may provide remote monitoring and sensors for parameters such as heart rate and blood pressure. 
     Wireless and mobile communication gradually becomes important in the field of an industrial application. Wiring is high in installation and maintenance cost. Therefore, a possibility of replacing a cable with re-constructible wireless links is an attractive opportunity in many industrial fields. However, in order to achieve this replacement, it is necessary for wireless connection to be established with latency, reliability, and capacity similar to those of the cable and management of wireless connection needs to be simplified. Low latency and a very low error probability are new requirements when connection to 5G is needed. 
     Logistics and freight tracking are important use cases for mobile communication that enables inventory and package tracking anywhere using a location-based information system. The use cases of logistics and freight typically demand low data rate but require location information with a wide range and reliability. 
     Referring to  FIG. 1 , the communication system  1  includes wireless devices  100   a  to  100   f,  base stations (BSs)  200 , and a network  300 . Although  FIG. 1  illustrates a 5G network as an example of the network of the communication system  1 , the implementations of the present disclosure are not limited to the 5G system, and can be applied to the future communication system beyond the 5G system. 
     The BSs  200  and the network  300  may be implemented as wireless devices and a specific wireless device may operate as a BS/network node with respect to other wireless devices. 
     The wireless devices  100   a  to  100   f  represent devices performing communication using radio access technology (RAT) (e.g., 5G new RAT (NR)) or LTE) and may be referred to as communication/radio/5G devices. The wireless devices  100   a  to  100   f  may include, without being limited to, a robot  100   a,  vehicles  100   b - 1  and  100   b - 2 , an extended reality (XR) device  100   c,  a hand-held device  100   d,  a home appliance  100   e,  an IoT device  100   f,  and an artificial intelligence (AI) device/server  400 . For example, the vehicles may include a vehicle having a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. The vehicles may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an AR/VR/Mixed Reality (MR) device and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. The hand-held device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or a smartglasses), and a computer (e.g., a notebook). The home appliance may include a TV, a refrigerator, and a washing machine. The IoT device may include a sensor and a smartmeter. 
     In the present disclosure, the wireless devices  100   a  to  100   f  may be called user equipments (UEs). A UE may include, for example, a cellular phone, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate personal computer (PC), a tablet PC, an ultrabook, a vehicle, a vehicle having an autonomous traveling function, a connected car, an UAV, an AI module, a robot, an AR device, a VR device, an MR device, a hologram device, a public safety device, an MTC device, an IoT device, a medical device, a FinTech device (or a financial device), a security device, a weather/environment device, a device related to a 5G service, or a device related to a fourth industrial revolution field. 
     The UAV may be, for example, an aircraft aviated by a wireless control signal without a human being onboard. 
     The VR device may include, for example, a device for implementing an object or a background of the virtual world. The AR device may include, for example, a device implemented by connecting an object or a background of the virtual world to an object or a background of the real world. The MR device may include, for example, a device implemented by merging an object or a background of the virtual world into an object or a background of the real world. The hologram device may include, for example, a device for implementing a stereoscopic image of 360 degrees by recording and reproducing stereoscopic information, using an interference phenomenon of light generated when two laser lights called holography meet. 
     The public safety device may include, for example, an image relay device or an image device that is wearable on the body of a user. 
     The MTC device and the IoT device may be, for example, devices that do not require direct human intervention or manipulation. For example, the MTC device and the IoT device may include smartmeters, vending machines, thermometers, smartbulbs, door locks, or various sensors. 
     The medical device may be, for example, a device used for the purpose of diagnosing, treating, relieving, curing, or preventing disease. For example, the medical device may be a device used for the purpose of diagnosing, treating, relieving, or correcting injury or impairment. For example, the medical device may be a device used for the purpose of inspecting, replacing, or modifying a structure or a function. For example, the medical device may be a device used for the purpose of adjusting pregnancy. For example, the medical device may include a device for treatment, a device for operation, a device for (in vitro) diagnosis, a hearing aid, or a device for procedure. 
     The security device may be, for example, a device installed to prevent a danger that may arise and to maintain safety. For example, the security device may be a camera, a closed-circuit TV (CCTV), a recorder, or a black box. 
     The FinTech device may be, for example, a device capable of providing a financial service such as mobile payment. For example, the FinTech device may include a payment device or a point of sales (POS) system. 
     The weather/environment device may include, for example, a device for monitoring or predicting a weather/environment. 
     The wireless devices  100   a  to  100   f  may be connected to the network  300  via the BSs  200 . An AI technology may be applied to the wireless devices  100   a  to  100   f  and the wireless devices  100   a  to  100   f  may be connected to the AI server  400  via the network  300 . The network  300  may be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, and a beyond-5G network. Although the wireless devices  100   a  to  100   f  may communicate with each other through the BSs  200 /network  300 , the wireless devices  100   a  to  100   f  may perform direct communication (e.g., sidelink communication) with each other without passing through the BSs  200 /network  300 . For example, the vehicles  100   b - 1  and  100   b - 2  may perform direct communication (e.g., vehicle-to-vehicle (V2V)/vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices  100   a  to  100   f.    
     Wireless communication/connections  150   a,    150   b  and  150   c  may be established between the wireless devices  100   a  to  100   f  and/or between wireless device  100   a  to  100   f  and BS  200  and/or between BSs  200 . Herein, the wireless communication/connections may be established through various RATs (e.g., 5G NR) such as uplink/downlink communication  150   a,  sidelink communication (or device-to-device (D 2 D) communication)  150   b,  inter-base station communication  150   c  (e.g., relay, integrated access and backhaul (IAB)), etc. The wireless devices  100   a  to  100   f  and the BSs  200 /the wireless devices  100   a  to  100   f  may transmit/receive radio signals to/from each other through the wireless communication/connections  150   a,    150   b  and  150   c.  For example, the wireless communication/connections  150   a,    150   b  and  150   c  may transmit/receive signals through various physical channels. To this end, at least a part of various configuration information configuring processes, various signal processing processes (e g , channel encoding/decoding, modulation/demodulation, and resource mapping/de-mapping), and resource allocating processes, for transmitting/receiving radio signals, may be performed based on the various proposals of the present disclosure. 
     AI refers to the field of studying artificial intelligence or the methodology that can create it, and machine learning refers to the field of defining various problems addressed in the field of AI and the field of methodology to solve them. Machine learning is also defined as an algorithm that increases the performance of a task through steady experience on a task. 
     Robot means a machine that automatically processes or operates a given task by its own ability. In particular, robots with the ability to recognize the environment and make self-determination to perform actions can be called intelligent robots. Robots can be classified as industrial, medical, home, military, etc., depending on the purpose or area of use. The robot can perform a variety of physical operations, such as moving the robot joints with actuators or motors. The movable robot also includes wheels, brakes, propellers, etc., on the drive, allowing it to drive on the ground or fly in the air. 
     Autonomous driving means a technology that drives on its own, and autonomous vehicles mean vehicles that drive without user&#39;s control or with minimal user&#39;s control. For example, autonomous driving may include maintaining lanes in motion, automatically adjusting speed such as adaptive cruise control, automatic driving along a set route, and automatically setting a route when a destination is set. The vehicle covers vehicles equipped with internal combustion engines, hybrid vehicles equipped with internal combustion engines and electric motors, and electric vehicles equipped with electric motors, and may include trains, motorcycles, etc., as well as cars. Autonomous vehicles can be seen as robots with autonomous driving functions. 
     Extended reality is collectively referred to as VR, AR, and MR. VR technology provides objects and backgrounds of real world only through computer graphic (CG) images. AR technology provides a virtual CG image on top of a real object image. MR technology is a CG technology that combines and combines virtual objects into the real world. MR technology is similar to AR technology in that they show real and virtual objects together. However, there is a difference in that in AR technology, virtual objects are used as complementary forms to real objects, while in MR technology, virtual objects and real objects are used as equal personalities. 
     NR supports multiples numerologies (and/or multiple subcarrier spacings (SCS)) to support various 5G services. For example, if SCS is 15 kHz, wide area can be supported in traditional cellular bands, and if SCS is 30 kHz/60 kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. If SCS is 60 kHz or higher, bandwidths greater than 24.25 GHz can be supported to overcome phase noise. 
     The NR frequency band may be defined as two types of frequency range, i.e., FR 1  and FR 2 . The numerical value of the frequency range may be changed. For example, the frequency ranges of the two types (FR 1  and FR 2 ) may be as shown in Table 1 below. For ease of explanation, in the frequency ranges used in the NR system, FR 1  may mean “sub 6 GHz range”, FR 2  may mean “above 6 GHz range,” and may be referred to as millimeter wave (mmW). 
     
       
         
           
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 Frequency Range 
                 Corresponding frequency 
                   
               
               
                 designation 
                 range 
                 Subcarrier Spacing 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 FR1 
                  450 MHz-6000 MHz 
                 15, 30, 60 
                 kHz 
               
               
                 FR2 
                 24250 MHz-52600 MHz 
                 60, 120, 240 
                 kHz 
               
               
                   
               
            
           
         
       
     
     As mentioned above, the numerical value of the frequency range of the NR system may be changed. For example, FR 1  may include a frequency band of 410 MHz to 7125 MHz as shown in Table 2 below. That is, FR 1  may include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more. For example, a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or more included in FR 1  may include an unlicensed band. Unlicensed bands may be used for a variety of purposes, for example for communication for vehicles (e.g., autonomous driving). 
     
       
         
           
               
               
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Frequency Range 
                 Corresponding frequency 
                   
               
               
                 designation 
                 range 
                 Subcarrier Spacing 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 FR1 
                  410 MHz-7125 MHz 
                 15, 30, 60 
                 kHz 
               
               
                 FR2 
                 24250 MHz-52600 MHz 
                 60, 120, 240 
                 kHz 
               
               
                   
               
            
           
         
       
     
     Here, the radio communication technologies implemented in the wireless devices in the present disclosure may include narrowband internet-of-things (NB-IoT) technology for low-power communication as well as LTE, NR and 6G. For example, NB-IoT technology may be an example of low power wide area network (LPWAN) technology, may be implemented in specifications such as LTE Cat NB 1  and/or LTE Cat NB 2 , and may not be limited to the above-mentioned names. Additionally and/or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may communicate based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and be called by various names such as enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented in at least one of the various specifications, such as 1) LTE Cat  0 , 2) LTE Cat M 1 , 3) LTE Cat M 2 , 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE Machine Type Communication, and/or 7) LTE M, and may not be limited to the above-mentioned names. Additionally and/or alternatively, the radio communication technologies implemented in the wireless devices in the present disclosure may include at least one of ZigBee, Bluetooth, and/or LPWAN which take into account low-power communication, and may not be limited to the above-mentioned names. For example, ZigBee technology may generate personal area networks (PANs) associated with small/low-power digital communication based on various specifications such as IEEE 802.15.4 and may be called various names. 
       FIG. 2  shows an example of wireless devices to which implementations of the present disclosure is applied. 
     Referring to  FIG. 2 , a first wireless device  100  and a second wireless device  200  may transmit/receive radio signals to/from an external device through a variety of RATs (e.g., LTE and NR). 
     In  FIG. 2 , {the first wireless device  100  and the second wireless device  200 } may correspond to at least one of {the wireless device  100   a  to  100   f  and the BS  200 }, {the wireless device  100   a  to  100   f  and the wireless device  100   a  to  100   f } and/or {the BS  200  and the BS  200 } of  FIG. 1 . 
     The first wireless device  100  may include at least one transceiver, such as a transceiver  106 , at least one processing chip, such as a processing chip  101 , and/or one or more antennas  108 . 
     The processing chip  101  may include at least one processor, such a processor  102 , and at least one memory, such as a memory  104 . It is exemplarily shown in  FIG. 2  that the memory  104  is included in the processing chip  101 . Additional and/or alternatively, the memory  104  may be placed outside of the processing chip  101 . 
     The processor  102  may control the memory  104  and/or the transceiver  106  and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure. For example, the processor  102  may process information within the memory  104  to generate first information/signals and then transmit radio signals including the first information/signals through the transceiver  106 . The processor  102  may receive radio signals including second information/signals through the transceiver  106  and then store information obtained by processing the second information/signals in the memory  104 . 
     The memory  104  may be operably connectable to the processor  102 . The memory  104  may store various types of information and/or instructions. The memory  104  may store a software code  105  which implements instructions that, when executed by the processor  102 , perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code  105  may implement instructions that, when executed by the processor  102 , perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code  105  may control the processor  102  to perform one or more protocols. For example, the software code  105  may control the processor  102  to perform one or more layers of the radio interface protocol. 
     Herein, the processor  102  and the memory  104  may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver  106  may be connected to the processor  102  and transmit and/or receive radio signals through one or more antennas  108 . Each of the transceiver  106  may include a transmitter and/or a receiver. The transceiver  106  may be interchangeably used with radio frequency (RF) unit(s). In the present disclosure, the first wireless device  100  may represent a communication modem/circuit/chip. 
     The second wireless device  200  may include at least one transceiver, such as a transceiver  206 , at least one processing chip, such as a processing chip  201 , and/or one or more antennas  208 . 
     The processing chip  201  may include at least one processor, such a processor  202 , and at least one memory, such as a memory  204 . It is exemplarily shown in  FIG. 2  that the memory  204  is included in the processing chip  201 . Additional and/or alternatively, the memory  204  may be placed outside of the processing chip  201 . 
     The processor  202  may control the memory  204  and/or the transceiver  206  and may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts described in the present disclosure. For example, the processor  202  may process information within the memory  204  to generate third information/signals and then transmit radio signals including the third information/signals through the transceiver  206 . The processor  202  may receive radio signals including fourth information/signals through the transceiver  106  and then store information obtained by processing the fourth information/signals in the memory  204 . 
     The memory  204  may be operably connectable to the processor  202 . The memory  204  may store various types of information and/or instructions. The memory  204  may store a software code  205  which implements instructions that, when executed by the processor  202 , perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code  205  may implement instructions that, when executed by the processor  202 , perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. For example, the software code  205  may control the processor  202  to perform one or more protocols. For example, the software code  205  may control the processor  202  to perform one or more layers of the radio interface protocol. 
     Herein, the processor  202  and the memory  204  may be a part of a communication modem/circuit/chip designed to implement RAT (e.g., LTE or NR). The transceiver  206  may be connected to the processor  202  and transmit and/or receive radio signals through one or more antennas  208 . Each of the transceiver  206  may include a transmitter and/or a receiver. The transceiver  206  may be interchangeably used with RF unit. In the present disclosure, the second wireless device  200  may represent a communication modem/circuit/chip. 
     Hereinafter, hardware elements of the wireless devices  100  and  200  will be described more specifically. One or more protocol layers may be implemented by, without being limited to, one or more processors  102  and  202 . For example, the one or more processors  102  and  202  may implement one or more layers (e.g., functional layers such as physical (PHY) layer, media access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, radio resource control (RRC) layer, and service data adaptation protocol (SDAP) layer). The one or more processors  102  and  202  may generate one or more protocol data units (PDUs) and/or one or more service data unit (SDUs) according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The one or more processors  102  and  202  may generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. The one or more processors  102  and  202  may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure and provide the generated signals to the one or more transceivers  106  and  206 . The one or more processors  102  and  202  may receive the signals (e.g., baseband signals) from the one or more transceivers  106  and  206  and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure. 
     The one or more processors  102  and  202  may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The one or more processors  102  and  202  may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in the one or more processors  102  and  202 . The descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software and the firmware or software may be configured to include the modules, procedures, or functions. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be included in the one or more processors  102  and  202  or stored in the one or more memories  104  and  204  so as to be driven by the one or more processors  102  and  202 . The descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software in the form of code, commands, and/or a set of commands. 
     The one or more memories  104  and  204  may be connected to the one or more processors  102  and  202  and store various types of data, signals, messages, information, programs, code, instructions, and/or commands. The one or more memories  104  and  204  may be configured by read-only memories (ROMs), random access memories (RAMs), electrically erasable programmable read-only memories (EPROMs), flash memories, hard drives, registers, cash memories, computer-readable storage media, and/or combinations thereof. The one or more memories  104  and  204  may be located at the interior and/or exterior of the one or more processors  102  and  202 . The one or more memories  104  and  204  may be connected to the one or more processors  102  and  202  through various technologies such as wired or wireless connection. 
     The one or more transceivers  106  and  206  may transmit user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, to one or more other devices. The one or more transceivers  106  and  206  may receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, from one or more other devices. For example, the one or more transceivers  106  and  206  may be connected to the one or more processors  102  and  202  and transmit and receive radio signals. For example, the one or more processors  102  and  202  may perform control so that the one or more transceivers  106  and  206  may transmit user data, control information, or radio signals to one or more other devices. The one or more processors  102  and  202  may perform control so that the one or more transceivers  106  and  206  may receive user data, control information, or radio signals from one or more other devices. 
     The one or more transceivers  106  and  206  may be connected to the one or more antennas  108  and  208  and the one or more transceivers  106  and  206  may be configured to transmit and receive user data, control information, and/or radio signals/channels, mentioned in the descriptions, functions, procedures, suggestions, methods and/or operational flowcharts disclosed in the present disclosure, through the one or more antennas  108  and  208 . In the present disclosure, the one or more antennas  108  and  208  may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports). 
     The one or more transceivers  106  and  206  may convert received user data, control information, radio signals/channels, etc., from RF band signals into baseband signals in order to process received user data, control information, radio signals/channels, etc., using the one or more processors  102  and  202 . The one or more transceivers  106  and  206  may convert the user data, control information, radio signals/channels, etc., processed using the one or more processors  102  and  202  from the base band signals into the RF band signals. To this end, the one or more transceivers  106  and  206  may include (analog) oscillators and/or filters. For example, the one or more transceivers  106  and  206  can up-convert OFDM baseband signals to OFDM signals by their (analog) oscillators and/or filters under the control of the one or more processors  102  and  202  and transmit the up-converted OFDM signals at the carrier frequency. The one or more transceivers  106  and  206  may receive OFDM signals at a carrier frequency and down-convert the OFDM signals into OFDM baseband signals by their (analog) oscillators and/or filters under the control of the one or more processors  102  and  202 . 
     In the implementations of the present disclosure, a UE may operate as a transmitting device in uplink (UL) and as a receiving device in downlink (DL). In the implementations of the present disclosure, a BS may operate as a receiving device in UL and as a transmitting device in DL. Hereinafter, for convenience of description, it is mainly assumed that the first wireless device  100  acts as the UE, and the second wireless device  200  acts as the BS. For example, the processor(s)  102  connected to, mounted on or launched in the first wireless device  100  may be configured to perform the UE behavior according to an implementation of the present disclosure or control the transceiver(s)  106  to perform the UE behavior according to an implementation of the present disclosure. The processor(s)  202  connected to, mounted on or launched in the second wireless device  200  may be configured to perform the BS behavior according to an implementation of the present disclosure or control the transceiver(s)  206  to perform the BS behavior according to an implementation of the present disclosure. 
     In the present disclosure, a BS is also referred to as a node B (NB), an eNode B (eNB), or a gNB. 
       FIG. 3  shows an example of a wireless device to which implementations of the present disclosure is applied. 
     The wireless device may be implemented in various forms according to a use-case/service (refer to  FIG. 1 ). 
     Referring to  FIG. 3 , wireless devices  100  and  200  may correspond to the wireless devices  100  and  200  of  FIG. 2  and may be configured by various elements, components, units/portions, and/or modules. For example, each of the wireless devices  100  and  200  may include a communication unit  110 , a control unit  120 , a memory unit  130 , and additional components  140 . The communication unit  110  may include a communication circuit  112  and transceiver(s)  114 . For example, the communication circuit  112  may include the one or more processors  102  and  202  of  FIG. 2  and/or the one or more memories  104  and  204  of  FIG. 2 . For example, the transceiver(s)  114  may include the one or more transceivers  106  and  206  of  FIG. 2  and/or the one or more antennas  108  and  208  of  FIG. 2 . The control unit  120  is electrically connected to the communication unit  110 , the memory unit  130 , and the additional components  140  and controls overall operation of each of the wireless devices  100  and  200 . For example, the control unit  120  may control an electric/mechanical operation of each of the wireless devices  100  and  200  based on programs/code/commands/information stored in the memory unit  130 . The control unit  120  may transmit the information stored in the memory unit  130  to the exterior (e.g., other communication devices) via the communication unit  110  through a wireless/wired interface or store, in the memory unit  130 , information received through the wireless/wired interface from the exterior (e.g., other communication devices) via the communication unit  110 . 
     The additional components  140  may be variously configured according to types of the wireless devices  100  and  200 . For example, the additional components  140  may include at least one of a power unit/battery, input/output (I/O) unit (e.g., audio I/O port, video I/O port), a driving unit, and a computing unit. The wireless devices  100  and  200  may be implemented in the form of, without being limited to, the robot ( 100   a  of  FIG. 1 ), the vehicles ( 100   b - 1  and  100   b - 2  of  FIG. 1 ), the XR device ( 100   c  of  FIG. 1 ), the hand-held device ( 100   d  of  FIG. 1 ), the home appliance ( 100   e  of  FIG. 1 ), the IoT device ( 100   f  of  FIG. 1 ), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medicine device, a FinTech device (or a finance device), a security device, a climate/environment device, the AI server/device ( 400  of  FIG. 1 ), the BSs ( 200  of  FIG. 1 ), a network node, etc. The wireless devices  100  and  200  may be used in a mobile or fixed place according to a use-example/service. 
     In  FIG. 3 , the entirety of the various elements, components, units/portions, and/or modules in the wireless devices  100  and  200  may be connected to each other through a wired interface or at least a part thereof may be wirelessly connected through the communication unit  110 . For example, in each of the wireless devices  100  and  200 , the control unit  120  and the communication unit  110  may be connected by wire and the control unit  120  and first units (e.g.,  130  and  140 ) may be wirelessly connected through the communication unit  110 . Each element, component, unit/portion, and/or module within the wireless devices  100  and  200  may further include one or more elements. For example, the control unit  120  may be configured by a set of one or more processors. As an example, the control unit  120  may be configured by a set of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphical processing unit, and a memory control processor. As another example, the memory unit  130  may be configured by a RAM, a DRAM, a ROM, a flash memory, a volatile memory, a non-volatile memory, and/or a combination thereof. 
     &lt;Dual Connectivity (DC)&gt; 
     Recently, a scheme for simultaneously connecting UE to different base stations, for example, a macro cell base station and a small cell base station, is being studied. This is called dual connectivity (DC). 
     For example, when DC is configured in E-UTRA, the following exemplary description may be applied. 
     In DC, the eNodeB for the primary cell (PCell) may be referred to as a master eNodeB (hereinafter referred to as MeNB). In addition, the eNodeB only for the secondary cell (Scell) may be referred to as a secondary eNodeB (hereinafter referred to as SeNB). 
     A cell group including a primary cell (PCell) implemented by MeNB may be referred to as a master cell group (MCG) or PUCCH cell group  1 . A cell group including a secondary cell (Scell) implemented by the SeNB may be referred to as a secondary cell group (SCG) or PUCCH cell group  2 . 
     Meanwhile, among the secondary cells in the secondary cell group (SCG), a secondary cell in which the UE can transmit Uplink Control Information (UCI), or the secondary cell in which the UE can transmit a PUCCH may be referred to as a super secondary cell (Super SCell) or a primary secondary cell (Primary Scell; PScell). 
       FIGS. 4A to 4C  are diagrams illustrating exemplary architecture for a next-generation mobile communication service. 
     Referring to  FIG. 4A , a UE is connected in dual connectivity (DC) with an LTE/LTE-A cell and a NR cell. 
     The NR cell is connected with a core network for the legacy fourth-generation mobile communication, that is, an Evolved Packet core (EPC). In example shown in  FIG. 4A , the UE is configured with EN-DC(E-UTRA-NR DC). The UE, which is configured with EN-DC, is connected with an E-UTRA (that is, LTE/LTE-A) cell and an NR cell. Here, a PCell in EN-DC may be an E-UTRA (that is, LTE/LTE-A) cell, and a PSCell in EN-DC may be an NR cell. 
     Referring to  FIG. 4B , the LTE/LTE-A cell is connected with a core network for 5th generation mobile communication, that is, a Next Generation (NG) core network, unlike the example in  FIG. 4A . 
     A service based on the architecture shown in  FIGS. 4A and 4B  is referred to as a non-standalone (NSA) service. 
     Referring to  FIG. 4C , a UE is connected only with an NR cell. A service based on this architecture is referred to as a standalone (SA) service. 
     Meanwhile, in the above new radio access technology (NR), using a downlink subframe for reception from a base station and using an uplink subframe for transmission to the base station may be considered. This method may be applied to paired spectrums and not-paired spectrums. A pair of spectrum indicates including two subcarrier for downlink and uplink operations. For example, one subcarrier in one pair of spectrum may include a pair of a downlink band and an uplink band. 
       FIG. 5  shows a frame structure in a 3GPP based wireless communication system to which implementations of the present disclosure is applied. 
     The frame structure shown in  FIG. 5  is purely exemplary and the number of subframes, the number of slots, and/or the number of symbols in a frame may be variously changed. In the 3GPP based wireless communication system, OFDM numerologies (e.g., subcarrier spacing (SCS), transmission time interval (TTI) duration) may be differently configured between a plurality of cells aggregated for one UE. For example, if a UE is configured with different SCSs for cells aggregated for the cell, an (absolute time) duration of a time resource (e.g., a subframe, a slot, or a TTI) including the same number of symbols may be different among the aggregated cells. Herein, symbols may include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbols). 
     Referring to  FIG. 5 , downlink and uplink transmissions are organized into frames. Each frame has T f . 10 ms duration. Each frame is divided into two half-frames, where each of the half-frames has 5 ms duration. Each half-frame consists of 5 subframes, where the duration T sf  per subframe is 1 ms. Each subframe is divided into slots and the number of slots in a subframe depends on a subcarrier spacing. Each slot includes 14 or 12 OFDM symbols based on a cyclic prefix (CP). In a normal CP, each slot includes 14 OFDM symbols and, in an extended CP, each slot includes 12 OFDM symbols. The numerology is based on exponentially scalable subcarrier spacing Δf=2 u *15 kHz. 
     Table 3 shows the number of OFDM symbols per slot N slot   symb , the number of slots per frame N frame,u   slot , and the number of slots per subframe N subframe,u   slot  for the normal CP, according to the subcarrier spacing Δf=2 u *15 kHz. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 3 
               
               
                   
                   
               
               
                   
                 u 
                 N slot   symb   
                 N frame, u   slot   
                 N subframe, u   slot   
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 0 
                 14 
                 10 
                 1 
               
               
                   
                 1 
                 14 
                 20 
                 2 
               
               
                   
                 2 
                 14 
                 40 
                 4 
               
               
                   
                 3 
                 14 
                 80 
                 8 
               
               
                   
                 4 
                 14 
                 160 
                 16 
               
               
                   
                   
               
            
           
         
       
     
     Table 4 shows the number of OFDM symbols per slot N slot   symb , the number of slots per frame N frame,u   slot , and the number of slots per subframe N subframe,u   slot f  or the extended CP, according to the subcarrier spacing Δf=2 u *15 kHz. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 4 
               
               
                   
                   
               
               
                   
                 u 
                 N slot   symb   
                 N frame, u   slot   
                 N subframe, u   slot   
               
               
                   
                   
               
             
            
               
                   
                 2 
                 12 
                 40 
                 4 
               
               
                   
                   
               
            
           
         
       
     
     &lt;Operating Band in NR&gt; 
     An operating band shown in Table 5 is a reframing operating band that is transitioned from an operating band of LTE/LTE-A. This operating band is referred to as FR 1  band. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 5 
               
               
                   
               
               
                 NR 
                 Uplink Operating 
                 Downlink Operating 
                   
               
               
                 Operating 
                 Band 
                 Band 
                 Duplex 
               
               
                 Band 
                 F UL     —     low -F UL     —     high   
                 F DL     —     1ow -F DL     —     high   
                 Mode 
               
               
                   
               
             
            
               
                 n1 
                 1920 MHz-1980 MHz 
                 2110 MHz-2170 MHz 
                 FDD 
               
               
                 n2 
                 1850 MHz-1910 MHz 
                 1930 MHz-1990 MHz 
                 FDD 
               
               
                 n3 
                 1710 MHz-1785 MHz 
                 1805 MHz-1880 MHz 
                 FDD 
               
               
                 n5 
                 824 MHz-849 MHz 
                 869 MHz-894 MHz 
                 FDD 
               
               
                 n7 
                 2500 MHz-2570 MHz 
                 2620 MHz-2690 MHz 
                 FDD 
               
               
                 n8 
                 880 MHz-915 MHz 
                 925 MHz-960 MHz 
                 FDD 
               
               
                 n12 
                 699 MHz-716 MHz 
                 729 MHz-746 MHz 
                 FDD 
               
               
                 n13 
                 777 MHz-787 MHz 
                 746 MHz-756 MHz 
                 FDD 
               
               
                 n14 
                 788 MHz-798 MHz 
                 758 MHz-768 MHz 
                 FDD 
               
               
                 n18 
                 815 MHz-830 MHz 
                 860 MHz-875 MHz 
                 FDD 
               
               
                 n20 
                 832 MHz-862 MHz 
                 791 MHz-821 MHz 
                 FDD 
               
               
                 n24 
                 1626.5 MHz-1660.5 MHz 
                 1525 MHz-1559 MHz 
                 FDD 
               
               
                 n25 
                 1850 MHz-1915 MHz 
                 1930 MHz-1995 MHz 
                 FDD 
               
               
                 n26 
                 814 MHz-849 MHz 
                 859 MHz-894 MHz 
                 FDD 
               
               
                 n28 
                 703 MHz-748 MHz 
                 758 MHz-803 MHz 
                 FDD 
               
               
                 n29 
                 N/A 
                 717 MHz-728 MHz 
                 SDL 
               
               
                 n30 
                 2305 MHz-2315 MHz 
                 2350 MHz-2360 MHz 
                 FDD 
               
               
                 n34 
                 2010 MHz-2025 MHz 
                 2010 MHz-2025 MHz 
                 TDD 
               
               
                 n38 
                 2570 MHz-2620 MHz 
                 2570 MHz-2620 MHz 
                 TDD 
               
               
                 n39 
                 1880 MHz-1920 MHz 
                 1880 MHz-1920 MHz 
                 TDD 
               
               
                 n40 
                 2300 MHz-2400 MHz 
                 2300 MHz-2400 MHz 
                 TDD 
               
               
                 n41 
                 2496 MHz-2690 MHz 
                 2496 MHz-2690 MHz 
                 TDD 
               
               
                 n46 
                 5150 MHz-5925 MHz 
                 5150 MHz-5925 MHz 
                 TDD 
               
               
                 n47 
                 5855 MHz-5925 MHz 
                 5855 MHz-5925 MHz 
                 TDD 
               
               
                 n48 
                 3550 MHz-3700 MHz 
                 3550 MHz-3700 MHz 
                 TDD 
               
               
                 n50 
                 1432 MHz-1517 MHz 
                 1432 MHz-1517 MHz 
                 TDD1 
               
               
                 n51 
                 1427 MHz-1432 MHz 
                 1427 MHz-1432 MHz 
                 TDD 
               
               
                 n53 
                 2483.5 MHz-2495 MHz     
                 2483.5 MHz-2495 MHz     
                 TDD 
               
               
                 n65 
                 1920 MHz-2010 MHz 
                 2110 MHz-2200 MHz 
                 FDD 
               
               
                 n66 
                 1710 MHz-1780 MHz 
                 2110 MHz-2200 MHz 
                 FDD 
               
               
                 n70 
                 1695 MHz-1710 MHz 
                 1995 MHz-2020 MHz 
                 FDD 
               
               
                 n71 
                 663 MHz-698 MHz 
                 617 MHz-652 MHz 
                 FDD 
               
               
                 n74 
                 1427 MHz-1470 MHz 
                 1475 MHz-1518 MHz 
                 FDD 
               
               
                 n75 
                 N/A 
                 1432 MHz-1517 MHz 
                 SDL 
               
               
                 n76 
                 N/A 
                 1427 MHz-1432 MHz 
                 SDL 
               
               
                 n77 
                 3300 MHz-4200 MHz 
                 3300 MHz-4200 MHz 
                 TDD 
               
               
                 n78 
                 3300 MHz-3800 MHz 
                 3300 MHz-3800 MHz 
                 TDD 
               
               
                 n79 
                 4400 MHz-5000 MHz 
                 4400 MHz-5000 MHz 
                 TDD 
               
               
                 n80 
                 1710 MHz-1785 MHz 
                 N/A 
                 SUL 
               
               
                 n81 
                 880 MHz-915 MHz 
                 N/A 
                 SUL 
               
               
                 n82 
                 832 MHz-862 MHz 
                 N/A 
                 SUL 
               
               
                 n83 
                 703 MHz-748 MHz 
                 N/A 
                 SUL 
               
               
                 n84 
                 1920 MHz-1980 MHz 
                 N/A 
                 SUL 
               
               
                 n85 
                 698 MHz-716 MHz 
                 728 MHz-746 MHz 
                 FDD 
               
               
                 n86 
                 1710 MHz-1780 MHz 
                 N/A 
                 SUL 
               
               
                 n89 
                 824 MHz-849 MHz 
                 N/A 
                 SUL 
               
               
                 n90 
                 2496 MHz-2690 MHz 
                 2496 MHz-2690 MHz 
                 TDD 
               
               
                 n91 
                 832 MHz-862 MHz 
                 1427 MHz-1432 MHz 
                 FDD 
               
               
                 n92 
                 832 MHz-862 MHz 
                 1432 MHz-1517 MHz 
                 FDD 
               
               
                 n93 
                 880 MHz-915 MHz 
                 1427 MHz-1432 MHz 
                 FDD 
               
               
                 n94 
                 880 MHz-915 MHz 
                 1432 MHz-1517 MHz 
                 FDD 
               
               
                 n95 
                 2010 MHz-2025 MHz 
                 N/A 
                 SUL 
               
               
                 n96 
                 5925 MHz-7125 MHz 
                 5925 MHz-7125 MHz 
                 TDD 
               
               
                 n97 
                 2300 MHz-2400 MHz 
                 N/A 
                 SUL 
               
               
                 n98 
                 1880 MHz-1920 MHz 
                 N/A 
                 SUL 
               
               
                 n99 
                 1626.5 MHz-1660.5 MHz 
                 N/A 
                 SUL 
               
               
                   
               
            
           
         
       
     
     The following table shows an NR operating band defined at high frequencies. This operating band is referred to as FR 2  band. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 6 
               
               
                   
               
               
                 NR 
                 Uplink Operating 
                 Downlink Operating 
                   
               
               
                 Operating 
                 Band 
                 Band 
                 Duplex 
               
               
                 Band 
                 F UL     —     low -F UL     —     high   
                 F DL     —     1ow -F DL     —     high   
                 Mode 
               
               
                   
               
             
            
               
                 n257 
                 26500 MHz-29500 MHz 
                 26500 MHz-29500 MHz 
                 TDD 
               
               
                 n258 
                 24250 MHz-27500 MHz 
                 24250 MHz-27500 MHz 
                 TDD 
               
               
                 n259 
                 39500 MHz-43500 MHz 
                 39500 MHz-43500 MHz 
                 TDD 
               
               
                 n260 
                 37000 MHz-40000 MHz 
                 37000 MHz-40000 MHz 
                 TDD 
               
               
                 n261 
                 27500 MHz-28350 MHz 
                 27500 MHz-28350 MHz 
                 TDD 
               
               
                 n262 
                 47200 MHz-48200 MHz 
                 47200 MHz-48200 MHz 
                 TDD 
               
               
                   
               
            
           
         
       
     
     Meanwhile, when the operating band shown in the above table is used, a channel bandwidth is used as shown in the following table. For example, Table 7 shows an example of a maximum value of the cannel bandwidth. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 7 
               
               
                   
               
               
                   
                 5 
                 10 
                 15 
                 20 
                 25 
                 30 
                 40 
                 50 
                 60 
                 70 
                 80 
                 90 
                 100 
               
               
                 SCS 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
               
               
                 (kHz) 
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
                 N RB   
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 15 
                 25 
                 52 
                 79 
                 106 
                 133 
                 160 
                 216 
                 270 
                 N/A 
                 N/A 
                 N/A 
                 N/A 
                 N/A 
               
               
                 30 
                 11 
                 24 
                 38 
                 51 
                 65 
                 78 
                 106 
                 133 
                 162 
                 189 
                 217 
                 245 
                 273 
               
               
                 60 
                 N/A 
                 11 
                 18 
                 24 
                 31 
                 38 
                 51 
                 65 
                 79 
                 93 
                 107 
                 121 
                 135 
               
               
                   
               
            
           
         
       
     
     In the above table, SCS indicates a subcarrier spacing. In the above table, N RB  indicates the number of RBs. 
     Meanwhile, when the operating band shown in the above Table 6 is used, a channel bandwidth is used as shown in the following table 8. 
     
       
         
           
               
               
               
               
               
             
               
                 TABLE 8 
               
               
                   
               
               
                 SCS 
                 50 MHz 
                 100 MHz 
                 200 MHz 
                 400 MHz 
               
               
                 (kHz) 
                 N RB   
                 N RB   
                 N RB   
                 N RB   
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 60 
                 66 
                 132 
                 264 
                 N/A 
               
               
                 120 
                 32 
                 66 
                 132 
                 264 
               
               
                   
               
            
           
         
       
     
     In NR, E-UTRA (Evolved Universal Terrestrial Radio Access) operating bands may also be used for communication. E-UTRA operating bands may mean operating bands of LTE. 
     The following table is an example of E-UTRA operating bands. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 9 
               
               
                   
               
               
                   
                 Uplink (UE) operating 
                 Downlink (DE) operating 
                   
               
               
                   
                 band 
                 band 
               
               
                 E-UTRA 
                 BS receive 
                 BS transmit 
               
               
                 Operating 
                 UE transmit 
                 UE receive 
                 Duplex 
               
               
                 Band 
                 F UL     —     1ow -F UL     —     high   
                 F DL     —     low -F DL     —     high   
                 Mode 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 1 
                 1920 MHz-1980 MHz 
                 2110 MHz-2170 MHz 
                 FDD 
               
               
                 2 
                 1850 MHz-1910 MHz 
                 1930 MHz-1990 MHz 
                 FDD 
               
               
                 3 
                 1710 MHz-1785 MHz 
                 1805 MHz-1880 MHz 
                 FDD 
               
               
                 4 
                 1710 MHz-1755 MHz 
                 2110 MHz-2155 MHz 
                 FDD 
               
               
                 5 
                 824 MHz-849 MHz 
                 869 MHz-894MHz  
                 FDD 
               
               
                 6 
                 830 MHz-840 MHz 
                 875 MHz-885 MHz 
                 FDD 
               
               
                 7 
                 2500 MHz-2570 MHz 
                 2620 MHz-2690 MHz 
                 FDD 
               
               
                 8 
                 880 MHz-915 MHz 
                 925 MHz-960 MHz 
                 FDD 
               
               
                 9 
                 1749.9 MHz-1784.9 MHz 
                 1844.9 MHz-1879.9 MHz 
                 FDD 
               
               
                 10 
                 1710 MHz-1770 MHz 
                 2110 MHz-2170 MHz 
                 FDD 
               
               
                 11 
                 1427.9 MHz-1447.9 MHz 
                 1475.9 MHz-1495.9 MHz 
                 FDD 
               
               
                 12 
                 699 MHz-716 MHz 
                 729 MHz-746 MHz 
                 FDD 
               
               
                 13 
                 777 MHz-787 MHz 
                 746 MHz-756 MHz 
                 FDD 
               
               
                 14 
                 788 MHz-798 MHz 
                 758 MHz-768 MHz 
                 FDD 
               
               
                 15 
                 Reserved 
                 Reserved 
                 FDD 
               
               
                 16 
                 Reserved 
                 Reserved 
                 FDD 
               
               
                 17 
                 704 MHz-716 MHz 
                 734 MHz-746 MHz 
                 FDD 
               
               
                 18 
                 815 MHz-830 MHz 
                 860 MHz-875 MHz 
                 FDD 
               
               
                 19 
                 830 MHz-845 MHz 
                 875 MHz-890 MHz 
                 FDD 
               
               
                 20 
                 832 MHz-862 MHz 
                 791 MHz-821 MHz 
                 FDD 
               
               
                 21 
                 1447.9 MHz-1462.9 MHz 
                 1495.9 MHz-1510.9 MHz 
                 FDD 
               
               
                 22 
                 3410 MHz-3490 MHz 
                 3510 MHz-3590 MHz 
                 FDD 
               
               
                 23 
                 2000 MHz-2020 MHz 
                 2180 MHz-2200 MHz 
                 FDD 
               
               
                 24 
                 1626.5 MHz-1660.5 MHz 
                 1525 MHz-1559 MHz 
                 FDD 
               
               
                 25 
                 1850 MHz-1915 MHz 
                 1930 MHz-1995 MHz 
                 FDD 
               
               
                 26 
                 814 MHz-849 MHz 
                 859 MHz-894 MHz 
                 FDD 
               
               
                 27 
                 807 MHz-824 MHz 
                 852 MHz-869 MHz 
                 FDD 
               
               
                 28 
                 703 MHz-748 MHz 
                 758 MHz-803 MHz 
                 FDD 
               
               
                 29 
                 N/A 
                 717 MHz-728 MHz 
                 FDD 
               
               
                 30 
                 2305 MHz-2315 MHz 
                 2350 MHz-2360 MHz 
                 FDD 
               
               
                 31 
                 452.5 MHz-457.5 MHz 
                 462.5 MHz-467.5 MHz 
                 FDD 
               
               
                 32 
                 N/A 
                 1452 MHz-1496 MHz 
                 FDD 
               
               
                 33 
                 1900 MHz-1920 MHz 
                 1900 MHz-1920 MHz 
                 TDD 
               
               
                 34 
                 2010 MHz-2025 MHz 
                 2010 MHz-2025 MHz 
                 TDD 
               
               
                 35 
                 1850 MHz-1910 MHz 
                 1850 MHz-1910 MHz 
                 TDD 
               
               
                 36 
                 1930 MHz-1990 MHz 
                 1930 MHz-1990 MHz 
                 TDD 
               
               
                 37 
                 1910 MHz-1930 MHz 
                 1910 MHz-1930 MHz 
                 TDD 
               
               
                 38 
                 2570 MHz-2620 MHz 
                 2570 MHz-2620 MHz 
                 TDD 
               
               
                 39 
                 1880 MHz-1920 MHz 
                 1880 MHz-1920 MHz 
                 TDD 
               
               
                 40 
                 2300 MHz-2400 MHz 
                 2300 MHz-2400 MHz 
                 TDD 
               
               
                 41 
                 2496 MHz-2690 MHz 
                 2496 MHz-2690 MHz 
                 TDD 
               
               
                 42 
                 3400 MHz-3600 MHz 
                 3400 MHz-3600 MHz 
                 TDD 
               
               
                 43 
                 3600 MHz-3800 MHz 
                 3600 MHz-3800 MHz 
                 TDD 
               
               
                 44 
                 703 MHz-803 MHz 
                 703 MHz-803 MHz 
                 TDD 
               
               
                 45 
                 1447 MHz-1467 MHz 
                 1447 MHz-1467 MHz 
                 TDD 
               
               
                 46 
                 5150 MHz-5925 MHz 
                 5150 MHz-5925 MHz 
                 TDD 
               
               
                 46 
                 5150 MHz-5925 MHz 
                 5150 MHz-5925 MHz 
                 TDD 
               
               
                 47 
                 5855 MHz-5925 MHz 
                 5855 MHz-5925 MHz 
                 TDD 
               
               
                 48 
                 3550 MHz-3700 MHz 
                 3550 MHz-3700 MHz 
                 TDD 
               
               
                 49 
                 3550 MHz-3700 MHz 
                 3550 MHz-3700 MHz 
                 TDD 
               
               
                 50 
                 1432 MHz-1517 MHz 
                 1432 MHz-1517 MHz 
                 TDD 
               
               
                 51 
                 1427 MHz-1432 MHz 
                 1427 MHz-1432 MHz 
                 TDD 
               
            
           
           
               
               
               
            
               
                 64 
                 Reserved 
                   
               
            
           
           
               
               
               
               
            
               
                 65 
                 1920 MHz-2010 MHz 
                 2110 MHz-2200 MHz 
                 FDD 
               
               
                 66 
                 1710 MHz-1780 MHz 
                 2110 MHz-2200 MHz 
                 FDD 
               
               
                 67 
                 N/A 
                 738 MHz-758 MHz 
                 FDD 
               
               
                 68 
                 698 MHz-728 MHz 
                 753 MHz-783 MHz 
                 FDD 
               
               
                 69 
                 N/A 
                 2570 MHz-2620 MHz 
                 FDD 
               
               
                 70 
                 1695 MHz-1710 MHz 
                 1995 MHz-2020 MHz 
                 FDD 
               
               
                 71 
                 663 MHz-698 MHz 
                 617 MHz-652 MHz 
                 FDD 
               
               
                 72 
                 451 MHz-456 MHz 
                 461 MHz-466 MHz 
                 FDD 
               
               
                 73 
                 450 MHz-455 MHz 
                 460 MHz-465 MHz 
                 FDD 
               
               
                 74 
                 1427 MHz-1470 MHz 
                 1475 MHz-1518 MHz 
                 FDD 
               
               
                 75 
                 N/A 
                 1432 MHz-1517 MHz 
                 FDD 
               
               
                 76 
                 N/A 
                 1427 MHz-1432 MHz 
                 FDD 
               
               
                 85 
                 698 MHz-716 MHz 
                 728 MHz-746 MHz 
                 FDD 
               
               
                   
               
            
           
         
       
     
     &lt;Carrier Aggregation&gt; 
     A carrier aggregation system is now described. 
     A carrier aggregation system aggregates a plurality of component carriers (CCs). A meaning of an existing cell is changed according to the above carrier aggregation. According to the carrier aggregation, a cell may signify a combination of a downlink component carrier and an uplink component carrier or an independent downlink component carrier. 
     Further, the cell in the carrier aggregation may be classified into a primary cell, a secondary cell, and a serving cell. The primary cell signifies a cell operated in a primary frequency. The primary cell signifies a cell which UE performs an initial connection establishment procedure or a connection reestablishment procedure or a cell indicated as a primary cell in a handover procedure. The secondary cell signifies a cell operating in a secondary frequency. Once the RRC connection is established, the secondary cell is used to provided an additonal radio resouce. 
     As described above, the carrier aggregation system may support a plurality of component carriers (CCs), that is, a plurality of serving cells unlike a single carrier system. 
     The carrier aggregation system may support a cross-carrier scheduling. The cross-carrier scheduling is a scheduling method capable of performing resource allocation of a PDSCH transmitted through other component carrier through a PDCCH transmitted through a specific component carrier and/or resource allocation of a PUSCH transmitted through other component carrier different from a component carrier basically linked with the specific component carrier. 
     Carrier aggregation may be classified into a continuous carrier aggregation in which aggregated carriers are continuous and a non-contiguous carrier aggregation in which aggregated carriers are separated from each other. In the following, carrier aggregation simply should be understood to include both the case where the component carrier (CC) is continuous and the case where it is discontinuous. The number of CCs aggregated between the downlink and the uplink may be set differently. A case in which the number of downlink CCs and the number of uplink CCs are the same may be referred to as symmetric aggregation, and a case in which the number of downlink CCs are different may be referred to as asymmetric aggregation. 
     On the other hand, carrier aggregation can also be classified into inter-band CA and intra-band CA . The inter-band CA is a method of aggregating and using each CC existing in different operating bands, and the intra-band CA is a method of aggregating and using each CC in the same operating band. In addition, the CA technology is more specifically, intra-band contiguous CA, intra-band non-contiguous CA and inter-band discontinuity. Non-Contiguous) CA. 
       FIG. 6 a    illustrates a concept view of an example of intra-band contiguous CA.  FIG. 6 b    illustrates a concept view of an example of intra-band non-contiguous CA. 
     LTE-advanced adds various schemes including uplink MIMO and carrier aggregation in order to realize high-speed wireless transmission. The CA may be split into the intra-band contiguous CA shown in  FIG. 6 a    and the intra-band non-contiguous CA shown in  FIG. 6   b.    
       FIG. 7 a    illustrates a concept view of an example of a combination of a lower frequency band and a higher frequency band for inter-band CA.  FIG. 7 b    illustrates a concept view of an example of a combination of similar frequency bands for inter-band CA. 
     The inter-band carrier aggregation may be separated into inter-band CA between carriers of a low band and a high band having different RF characteristics of inter-band CA as shown in  FIG. 7 a    and inter-band CA of similar frequencies that may use a common RF terminal per component carrier due to similar RF (radio frequency) characteristics as shown in  FIG. 7   b.    
     The following table is an example of Transmission bandwidth configuration N RB  in E-UTRA. 
     
       
         
           
               
               
             
               
                   
                 TABLE 10 
               
             
            
               
                   
                   
               
               
                   
                 Channel bandwidth BW Channel  [MHz] 
               
            
           
           
               
               
               
               
               
               
               
            
               
                   
                 1.4 
                 3 
                 5 
                 10 
                 15 
                 20 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
               
            
               
                 Transmission 
                 6 
                 15 
                 25 
                 50 
                 75 
                 100 
               
               
                 bandwidth 
               
               
                 configuration N RB   
               
               
                   
               
            
           
         
       
     
     In Table 10, N RB  may mean Transmission bandwidth configuration, expressed in units of resource blocks for E-UTRA. 
     The following table is an example of CA bandwidth classes and corresponding nominal guard band BW GB . The example of CA bandwidth classes and corresponding nominal guard band BW GB  may be used for CA in E-UTRA. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 11 
               
               
                   
               
               
                   
                 Aggregated 
                   
                   
               
               
                 CA 
                 Transmission 
                 Number of 
               
               
                 Bandwidth 
                 Bandwidth 
                 contiguous 
               
               
                 Class 
                 Configuration 
                 CC 
                 Nominal Guard Band BW GB   
               
               
                   
               
             
            
               
                 A 
                 N RB, agg  ≤ 100 
                 1 
                 a 1  BW Channel(1)  − 0.5 Δf 1   
               
               
                   
                   
                   
                 (NOTE 2) 
               
               
                 B 
                 25 &lt; N RB, agg  ≤ 100 
                 2 
                 0.05 
               
               
                   
                   
                   
                 max(BW Channel(1) , BW Channel(2) ) − 0.5 Δf 1   
               
               
                 C 
                 100 &lt; N RB, agg  ≤ 200 
                 2 
                 0.05 
               
               
                   
                   
                   
                 max(BW Channel(1) , BW Channel(2) ) − 0.5 Δf 1   
               
               
                 D 
                 200 &lt; N RB, agg  ≤ 300 
                 3 
                 0.05 
               
               
                   
                   
                   
                 max(BW Channel(1) , BW Channel(2) , 
               
               
                   
                   
                   
                 BW Channel(3) ) − 0.5 Δf 1   
               
               
                 E 
                 300 &lt; N RB, agg  ≤ 400 
                 4 
                 0.05 
               
               
                   
                   
                   
                 max(BW Channel(1) , BW Channel(2) , 
               
               
                   
                   
                   
                 BW Channel(3) , BW Channel(4) ) − 0.5 Δf 1   
               
               
                 F 
                 400 &lt; N RB, agg  ≤ 500 
                 5 
                 0.05 
               
               
                   
                   
                   
                 max(BW Channel(1) , BW Channel(2) , 
               
               
                   
                   
                   
                 BW Channel(3) , BW Channel(4) , 
               
               
                   
                   
                   
                 BW Channel(5) ) − 0.5 Δf 1   
               
               
                 I 
                 700 &lt; N RB, agg  ≤ 800 
                 8 
                 NOTE 3 
               
               
                   
               
               
                 NOTE 1: 
               
               
                 BW Channel(j) , j = 1, 2, 3, 4 is the channel bandwidth of an E-UTRA component carrier according to Table 10 and Δf 1  = Δf for the downlink with Δf the subcarrier spacing while Δf 1  = 0 for the uplink. 
               
               
                 (NOTE 2): 
               
               
                 a 1  = 0.16/1.4 for BW Channel(1)  = 1.4 MHz whereas a 1  = 0.05 for all other channel bandwidths. 
               
               
                 NOTE 3: 
               
               
                 Applicable for later releases. 
               
            
           
         
       
     
     In Table  11 , BW GB  may mean nominal guard band. The nominal guard band may mean a virtual guard band to facilitate transmitter (or receiver) filtering above/below edge CC(Component Carrier)s. N RB,agg  may mean the number of aggregated RBs within a fully allocated Aggregated Channel bandwidth. 
     The carrier aggregation configuration is a combination of operating bands, each supporting a carrier aggregation bandwidth class. The following table is an example of CA bandwidth classes in NR. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 12 
               
               
                   
               
               
                 NR CA 
                   
                 Number of 
                   
               
               
                 bandwidth 
                   
                 contiguous 
                 Fallback 
               
               
                 class 
                 Aggregated channel bandwidth 
                 CC 
                 group 
               
               
                   
               
             
            
               
                 A 
                 BW Channel  ≤ BW Channel, max   
                 1 
                 1, 2, 3 
               
               
                 B 
                 20 MHZ ≤ BW Channel     —     CA  ≤ 100 MHz 
                 2 
                 2, 3 
               
               
                 C 
                 100 MHz &lt; BW Channel     —     CA  ≤ 2 × BW Channel, max   
                 2 
                 1, 3 
               
               
                 D 
                 200 MHz &lt; BW Channel     —     CA  ≤ 3 × BW Channel, max   
                 3 
               
               
                 E 
                 300 MHz &lt; BW Channel     —     CA  ≤ 4 × BW Channel, max   
                 4 
               
               
                 G 
                 100 MHz &lt; BW Channel     —     CA  ≤ 150 MHz 
                 3 
                 2 
               
               
                 H 
                 150 MHz &lt; BW Channel     —     CA  ≤ 200 MHz 
                 4 
               
               
                 I 
                 200 MHz &lt; BW Channel     —     CA  ≤ 250 MHz 
                 5 
               
               
                 J 
                 250 MHz &lt; BW Channel     —     CA  ≤ 300 MHz 
                 6 
               
               
                 K 
                 300 MHz &lt; BW Channel     —     CA  ≤ 350 MHz 
                 7 
               
               
                 L 
                 350 MHz &lt; BW Channel     —     CA  ≤ 400 MHz 
                 8 
               
               
                 M 
                 50 MHz &lt; BW Channel     —     CA  ≤ [180] MHz 
                 3 
                 3 
               
               
                 N 
                 80 MHz &lt; BW Channel     —     CA  ≤ [240] MHz 
                 4 
               
               
                 O 
                 100 MHz ≤ BW Channel     —     CA  ≤ [300] MHz 
                 5 
               
               
                   
               
            
           
         
       
     
     In Table 12, BW Channel_CA  is maximum channel bandwidth supported among all bands. It is mandatory for a UE to be able to fallback to lower order NR CA bandwidth class configuration within a fallback group. It is not mandatory for a UE to be able to fallback to lower order NR CA bandwidth class configuration that belong to a different fallback group. 
     &lt;Disclosure of the Present Specification&gt; 
     Conventionally, for power class  2  User Equipment (UE), the impact of self interference, such as harmonics and/or IMD, on some E-UTRA NR Dual Connectivity (EN-DC) band combinations and on some inter-band Carrier Aggregation (CA) band combinations has not been analyzed. Thus, Maximum Sensitivity Degradation (MSD) values have not been discussed for these cases. 
     Also, for power class  2  UE, the impact of cross band isolations, which means interference on Rx(reception) band due to small frequency interval between Tx(Transmission) band and the Rx band, on some EN-DC band combinations and on some inter-band CA band combinations has not been analyzed. Thus, Maximum Sensitivity Degradation (MSD) values have not been discussed for these cases. 
     In 5G NR, EN-DC combinations, in which various E-UTRA bands and NR bands operate are simultaneously used, has been supported. And standards related to power class  2  (PC 2 ) DC UE-related started to be defined, and standards allowing PC 2  in NR inter-band CA will be discussed. 
     Herein, the power class of UE may mean the maximum allowed output power of the all type device including handheld device UE in FR 1  frequency range. Specially, in FR 2 , RAN 4  define the multiple power class according to device type such as handheld UE (Power class  3 ), FWA UE (power class  1 ) and vehicular UE (power class  2 ) as follow. 
     Table 13 shows an example of UE power class based on device types in FR 2 . 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 13 
               
               
                   
                   
               
               
                   
                 UE Power class 
                 UE type 
               
               
                   
                   
               
             
            
               
                   
                 1 
                 Fixed wireless access (FWA) UE 
               
               
                   
                 2 
                 Vehicular UE 
               
               
                   
                 3 
                 Handheld UE 
               
               
                   
                 4 
                 High power non-handheld UE 
               
               
                   
                 5 
                 Fixed wireless access (FWA) UE 
               
               
                   
                   
               
            
           
         
       
     
     However, in FR 1  range, the power class shall be distinguished by the maximum allowed power levels in all device type. Then, the power class  2  UE can support maximum output power up to 26 dBm. The power class  3  UE can support maximum output power up to 23 dBm as follow. 
     Table 14 shows an example of UE power class in FR 1   
     
       
         
           
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 14 
               
               
                   
               
               
                 NR 
                 Class 1 
                 Tolerance 
                 Class 1.5 
                 Tolerance 
                 Class 2 
                 Tolerance 
                 Class 3 
                 Tolerance 
               
               
                 band 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
               
               
                   
               
             
            
               
                 n1  
                   
                   
                   
                   
                   
                   
                 23 
                  ±3l 
               
               
                 n2  
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n3  
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n5  
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n7  
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n8  
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n12 
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n13 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n14 
                 31 
                 +2/−3 
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n18 
                   
                   
                   
                   
                   
                   
                 23 
                 ±38-     
               
               
                 n20 
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n24 
                   
                   
                   
                   
                   
                   
                 23 
                 +2/−3 
               
               
                 n25 
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n26 
                   
                   
                   
                   
                   
                   
                 23 
                 ±33  
               
               
                 n28 
                   
                   
                   
                   
                   
                   
                 23 
                     +2/−2.5 
               
               
                 n30 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n34 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n38 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n39 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n40 
                   
                   
                   
                   
                 26 
                 +2/−3 
                 23 
                 ±3 
               
               
                 n41 
                   
                   
                 29 
                 +2/−3 
                 26 
                 +2/−3 
                 23 
                 ±33  
               
               
                 n47 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n48 
                   
                   
                   
                   
                   
                   
                 23 
                 +2/−3 
               
               
                 n50 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n51 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n53 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n65 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n66 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n70 
                   
                   
                   
                   
                   
                   
                 23 
                 ±3 
               
               
                 n71 
                   
                   
                   
                   
                   
                   
                 23 
                     +2/−2.5 
               
               
                 n74 
                   
                   
                   
                   
                   
                   
                 23 
                 ±34-     
               
               
                 n77 
                   
                   
                 29 
                 +2/−3 
                 26 
                 +2/−3 
                 23 
                 +2/−3 
               
               
                 n78 
                   
                   
                 29 
                 +2/−3 
                 26 
                 +2/−3 
                 23 
                 +2/−3 
               
               
                 n79 
                   
                   
                 29 
                 +2/−3 
                 26 
                 +2/−3 
                 23 
                 +2/−3 
               
            
           
           
               
            
               
                 . . . 
               
               
                   
               
            
           
         
       
     
     Similar to LTE-A CA, in 5G NR, a method of defining MSD due to self interference at the terminal receiving end for dual uplink of each DC band combination of the operator or CA combination is being discussed. 
     By defining the MSD, methods for solving the self-interference problem in various ways (e.g. harmonic trap filter, to mitigate desense caused by IMD or define the method of measuring reception sensitivity in an area where desense does not occur), such as allowing relaxation of the reception sensitivity of the terminal, or additionally using an element that mitigates distortion caused by IMD/Harmonic components, have been standardized. 
     In various examples herein, additional DC combinations (eg, PC 2  FDD LTE+TDD NR band combinations) are discussed, and also PC 2  NR inter-band CA combinations are being discussed. For various new DC/CA combinations, it is being discussed that PC 2  is allowed. 
     Therefore, in the example of the disclosure of the present specification, a band combination in which a self interference problem occurs due to dual uplink transmission among various DC/CA combinations is analyzed. 
     For example, a band combination in which a reception sensitivity degradation phenomenon in the terminal&#39;s own reception band due to the harmonic component and IMD effect and/or cross band isolations occurs is analyzed. Cross band isolations may mean interference on Rx(reception) band due to small frequency interval between Tx(Transmission) band and the Rx band. 
     In addition, in the present specification, exceptions to the reception sensitivity requirements of the corresponding band combination are defined in the standard through the MSD (Maximum sensitivity degradation) analysis in consideration of the RF structure implemented in the terminal in this band combination. And, this exception may be applied to the reception sensitivity test of the corresponding terminal. 
     In the present specification, when the Power class  2  terminal performs communication based on NR CA or communication based on EN-DC, self-interference occurring in the terminal is analyzed. And, a relaxed standard for the sensitivity of such a terminal is proposed. 
     In various examples of the disclosure of the present specification, the self desense problem for DC / CA band combinations added in new PC 2  DC band combinations (e.g. 1 FDD LTE operating band+1 TDD NR operating band) and PC 2  NR inter-band CA is analyzed. 
     For example, the analysis on sensitivity degradation may be an analysis of how the effect on noise raising on non-lineality characteristics according to dual uplink transmission at the transmitting end of the UE affects the receiving end of the UE itself from the viewpoint of sensitivity. 
     For example, such an analysis may be performed by using the measurement values for the structure of the terminal (e.g. Cascaded diplexer structure, Duplexer-Triplexer, duplexer-Quadplexer structure, etc.), the devices used in the terminal, and isolation levels for each device (e.g. antenna isolation, PCB isolation, PA to PA isolation, PA to LNA isolation, etc.). 
     Accordingly, it is possible to analyze the effect of the effect on Tx noise raising caused by all effects actually occurring in the communication of the terminal on the decrease in Rx sensitivity at the frequency of the reception area of the terminal itself. 
     The result values derived according to the analysis below may be values measured and analyzed in consideration of the device characteristics of the corresponding terminal, unlike simply calculating the reception sensitivity in a single band mathematically. 
     The following  FIG. 8  shows an example of non-linearity caused by active component in the UE. 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 8  illustrates an example of non-linearity caused by active component in the UE. 
     In particular, intermodulation in a terminal including an active component (PA, LNA) may be a component that occurs with one non-linear characteristic. When intermodulation occurs in a band adjacent to the wanted signal, intermodulation may not be removed even if a filter is used, and intermodulation has a characteristic of continuously producing additional nonlinear components. 
     In example shown in  FIG. 8 , the constant coefficient represents the DC component (A) and the amplification ratio of the original signal (B), and from the part of the second term, the harmonic/IMD component generated by the active element at 2×/3× is generated. 
     That is, the trigonometric function C*[acos(w1t)+bcos(w2t)]2 of the quadratic term according to the harmonics component and/or the IMD component can generate a nonlinear component generated by mixing several signals as follows. These non-linear components are compounded according to the IMD order, resulting in non-linear characteristics. 
     
       
         
           
             
               C 
               * 
               
                 
                   [ 
                   
                     
                       a 
                       * 
                       
                         cos 
                         ⁡ 
                         ( 
                         
                           
                             w 
                             1 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                     
                     + 
                     
                       b 
                       * 
                       
                         cos 
                         ⁡ 
                         ( 
                         
                           
                             w 
                             2 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                     
                   
                   ] 
                 
                 2 
               
             
             = 
             
               
                 C 
                 * 
                 
                   [ 
                   
                     
                       
                         a 
                         2 
                       
                       ⁢ 
                       
                         
                           cos 
                           2 
                         
                         ( 
                         
                           
                             w 
                             1 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                     
                     + 
                     
                       2 
                       ⁢ 
                       ab 
                       * 
                       
                         cos 
                         ⁡ 
                         ( 
                         
                           
                             w 
                             1 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                       ⁢ 
                       
                         cos 
                         ⁡ 
                         ( 
                         
                           
                             w 
                             2 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                     
                     + 
                     
                       
                         b 
                         2 
                       
                       ⁢ 
                       
                         
                           cos 
                           2 
                         
                         ( 
                         
                           
                             w 
                             2 
                           
                           ⁢ 
                           t 
                         
                         ) 
                       
                     
                   
                   ] 
                 
               
               = 
               
                 
                   C 
                   * 
                   
                     [ 
                     
                       
                         
                           a 
                           2 
                         
                         * 
                         
                           
                             ( 
                             
                               1 
                               + 
                               
                                 cos 
                                 ⁡ 
                                 ( 
                                 
                                   2 
                                   ⁢ 
                                   
                                     w 
                                     1 
                                   
                                   ⁢ 
                                   t 
                                 
                                 ) 
                               
                             
                             ) 
                           
                           / 
                           2 
                         
                       
                       + 
                       
                         ab 
                         * 
                         
                           cos 
                           ⁡ 
                           ( 
                           
                             
                               w 
                               1 
                             
                             + 
                             
                               w 
                               2 
                             
                           
                           ) 
                         
                         ⁢ 
                         t 
                       
                       + 
                       
                         ab 
                         * 
                         
                           cos 
                           ⁡ 
                           ( 
                           
                             
                               w 
                               1 
                             
                             - 
                             
                               w 
                               2 
                             
                           
                           ) 
                         
                         ⁢ 
                         t 
                       
                       + 
                       
                         
                           b 
                           2 
                         
                         * 
                         
                           
                             ( 
                             
                               1 
                               + 
                               
                                 cos 
                                 ⁡ 
                                 ( 
                                 
                                   2 
                                   ⁢ 
                                   
                                     w 
                                     2 
                                   
                                   ⁢ 
                                   t 
                                 
                                 ) 
                               
                             
                             ) 
                           
                           / 
                           2 
                         
                       
                     
                     ] 
                   
                 
                 = 
                 
                   
                     0.5 
                     
                       C 
                       ⁡ 
                       ( 
                       
                         
                           a 
                           2 
                         
                         + 
                         
                           b 
                           2 
                         
                       
                       ) 
                     
                   
                   + 
                   
                     
                       0 
                       . 
                       5 
                     
                     ⁢ 
                     C 
                     ⁢ 
                     
                       a 
                       2 
                     
                     ⁢ 
                     
                       cos 
                       ⁡ 
                       ( 
                       
                         2 
                         ⁢ 
                         
                           w 
                           1 
                         
                         ⁢ 
                         t 
                       
                       ) 
                     
                   
                   + 
                   
                     
                       0 
                       . 
                       5 
                     
                     ⁢ 
                     C 
                     ⁢ 
                     
                       b 
                       2 
                     
                     ⁢ 
                     
                       cos 
                       ⁡ 
                       ( 
                       
                         2 
                         ⁢ 
                         
                           w 
                           2 
                         
                         ⁢ 
                         t 
                       
                       ) 
                     
                   
                   + 
                   
                     Cab 
                     * 
                     
                       cos 
                       ⁡ 
                       ( 
                       
                         
                           w 
                           1 
                         
                         + 
                         
                           w 
                           2 
                         
                       
                       ) 
                     
                     ⁢ 
                     t 
                   
                   + 
                   
                     Cab 
                     ⁢ 
                     
                       cos 
                       ⁡ 
                       ( 
                       
                         
                           w 
                           1 
                         
                         - 
                         
                           w 
                           2 
                         
                       
                       ) 
                     
                     ⁢ 
                     t 
                   
                 
               
             
           
         
       
     
     Here, the constant 0.5C (a 2 +b 2 ) value representing the non-linear characteristic and 0.5Ca 2  cos(2w 1 t) and 0.5Cb 2  cos(2w 2 t) components expressed as first-order terms represent the harmonic components according to each frequency. Cab*cos(w 1 +w 2 )t and Cab*cos(w 1 −w 2 )t shows that the IMD component that occurs when a signal and b signal are transmitted at the same time occurs at the corresponding frequency. 
     The influence on the 3rd and 4th order or higher functions is also shown by adding more non-linear characteristics as above, and the non-linear characteristics according to these equations appear complexly at the receiving end. 
     Therefore, in 5G NR, a high-power terminal supports communication at a high frequency in a channel bandwidth wider than that of conventional mobile communication. Accordingly, in the example of the disclosure of the present specification, characteristics of the corresponding band of the terminal device are identified. And, using these characteristics, the example of the disclosure of the present specification can identify and analyze the noise increase and nonlinear characteristics of the component of the transmitting end due to the characteristics of the nonlinear element to the receiving end. Through this, an example of the disclosure of the present specification analyzes a decrease in sensitivity of the receiving end. 
     Accordingly, in the present specification, among various EN-DC band combinations, a EN-DC band combination in which a reception sensitivity reduction phenomenon occurs in its own reception band due to IMD, a harmonic component and/or cross band isolations is analyzed. In addition, in this specification, the MSD (maximum sensitivity degradation) in consideration of the UE-implemented RF (Radio Frequency) structure in the EN-DC band combinations and/or PC 2  NR inter-band CA band combinations is analyzed. Through the analyzed MSD, exceptions to the reception sensitivity requirements of the EN-DC band combinations and/or PC 2  NR inter-band CA band combinations are proposed for the standard. An exception to the reception sensitivity requirement of the the EN-DC band combinations and/or PC 2  NR inter-band CA band combinations may be applied as an exception to the reception sensitivity test of the corresponding UE. 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 9  illustrates a second example of situation in which an uplink signal transmitted via an uplink operating band affects reception of a downlink signal on via downlink operating band. 
     In  FIG. 9 , Intermodulation Distortion (IMD) may mean amplitude modulation of signals containing two or more different frequencies, caused by nonlinearities or time variance in a system. The intermodulation between frequency components will form additional components at frequencies that are not just at harmonic frequencies (integer multiples) of either, like harmonic distortion, but also at the sum and difference frequencies of the original frequencies and at sums and differences of multiples of those frequencies. 
     Referring to  FIG. 9 , an example in which an EN-DC or NR inter-band CA is configured with a UE is shown. For example, the UE may perform communication by using the EN-DC or the NR inter-band CA based on at least one downlink operating bands (DL Band X, Y) and at least one uplink operating bands (UL Band X, Y). 
     As shown in  FIG. 9 , in a situation in which at least one downlink operating bands are configured by the EN-DC or by the NR inter-band CA and at least one uplink operating bands are configured by the EN-DC or by the NR inter-band CA, the UE may transmit an uplink signal through at least one uplink operating bands. In this case, a harmonics component and an intermodulation distortion (IMD) component occurring based on the frequency band of the uplink signal may fall into its own downlink band. That is, in the example of  FIG. 9 , when the UE transmits the uplink signal, the harmonics component and the intermodulation distortion (IMD) component may occur, which may affect the downlink band of the UE itself. 
     Also, as shown in  FIG. 9 , when the UE is configured with the EN-DC or the NR inter-band CA, the UE may transmit uplink signal via band Y and may receive downlink signal via band X. In this case, the impact of cross band isolations, which means interference on Rx(reception) band (e.g. band X) due to small frequency interval between Tx(Transmission) band (e.g. band Y) and the Rx band (e.g. band X), on some EN-DC band combinations and on some inter-band CA band combinations may occur. Cross band isolations may affect the downlink band of the UE itself. 
     The UE should be configured to satisfy a reference sensitivity power level (REFSENS) which is the minimum average power for each antenna port of the UE when receiving the downlink signal. 
     When the harmonics component and/or IMD component occur as shown in the example of  FIG. 9 , there is a possibility that the REFSENS for the downlink signal may not be satisfied due to the uplink signal transmitted by the UE itself. Also, when the cross band isolation occur as shown in the example of  FIG. 9 , there is a possibility that the REFSENS for the downlink signal may not be satisfied due to the uplink signal transmitted by the UE itself. 
     For example, the REFSENS may be set such that the downlink signal throughput of the UE is 95% or more of the maximum throughput of the reference measurement channel When the harmonics component, IMD component, and/or cross band isolation occur, there is a possibility that the downlink signal throughput is reduced to 95% or less of the maximum throughput. 
     Therefore, when he harmonics component, IMD component, and/or cross band isolation, whether he harmonics component, IMD component, and/or cross band isolation of the UE occur may be determined, and the maximum sensitivity degradation (MSD) value is defined for the corresponding frequency band, so relaxation for REFSENS in the reception band related to its own transmission signal may be allowed. Here, the MSD may mean the maximum allowed reduction of the REFSENS. When the MSD is defined for a specific operating band of the UE, which configured with the EN-DC or the NR inter-band CA, the REFSENS of the corresponding operating band may be relaxed by the amount of the defined MSD. 
     Hereinafter, in examples of the disclosure of the present specification, self desense and/or self-interference due to NR CA operation or EN-DC operation, performed by a power class  2  UE, in an EN-DC band combinations or NR CA band combinations are analyzed, and a relaxed standard for sensitivity thereto is proposed. For example, the relaxed standard for sensitivity may be based on MSD. 
     In first example of the disclosure of the present specification, examples of self-interference analysis and MSD values for PC 2  DC band combinations are explained. In second example of the disclosure of the present specification, examples of self-interference analysis and MSD values for PC 2  NR inter-band CA band combinations are explained. 
     1. First Example of the Disclosure of the Present Specification 
     Hereinafter, self-interference for PC 2  UE configured with DC is analyzed. PC 2  UE configured with DC may be referred to PC 2  DC UE. Various combinations of downlink operating bands and uplink operating bands in the first example of the disclosure of the present specification may be used for the DC. For example, for DC, combinations of one E-UTRA operating bands and one NR operating band may be used. Based on the combinations of one E-UTRA operating band and one NR operating band, a UE may be configured to use  2  uplink operating bands (one E-UTRA operating band and one NR operating band) and  2  downlink operating bands (one E-UTRA operating band and one NR operating band). For example, 1 LTE(or E-UTRA) FDD operation band and one NR TDD operation band may be used as DC band combination. 
     Table 15 shows examples of new DC bands included to support PC 2  DC band combinations. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 15 
               
               
                   
                   
               
               
                   
                 EN-DC 
                 status 
               
               
                   
                 configuration 
                 (new, ongoing, completed, stopped) 
               
               
                   
                   
               
             
            
               
                   
                 DC_1A_n78A 
                 Completed for PC3, Completed for PC2 
               
               
                   
                 DC_8A_n78A 
                 Completed for PC3, Completed for PC2 
               
               
                   
                 DC_2A_n41A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_66A_n41A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_7A_n78A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_2A_n77A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_5A_n77A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_13A_n77A 
                 Completed for PC3, New for PC2 
               
               
                   
                 DC_66A_n77A 
                 Completed for PC3, New for PC2 
               
               
                   
                   
               
            
           
         
       
     
     According to examples of Table 15, DC_ 1 A_n 78 A, DC_ 8 A_n 78 A, DC_ 2 A_n 41 A, DC_ 66 A_n 41 A, DC_ 7 A_n 78 A, DC_ 2 A_n 77 A, DC_SA_n 77 A, DC_ 13 A_n 77 A, DC_ 66 A_n 77 A are newly included to support PC 2  DC operation. 
     For example, DC_ 2 A_n 41 A may mean that E-UTRA operating band  2  and NR operating band n 41  are configured to be DC operating band combination for PC 2  DC UE. 
     For example, Alphabets (A, B, C, D, and the like) after the number in Table 15 refer to a bandwidth class described in the example of Table 11 and Table 12. 
     Conventionally, the impact of harmonics, IMD, and/or cross band isolations on some combinations in the DC case (for example, EN-DC case) has not been analyzed and the MSD values for the combinations in the DC case have not been discussed. For example, the impact of the harmonics and/or IMD for a combination of DC cases of Table 16, which will be described later, is not analyzed, and the MSD values have not been discussed. 
     In the DC case, the UE may perform dual uplink transmission through two uplink operating bands. In this case, the MSD value for analyzing the impact of the harmonics and/or IMD occurring in the downlink operating bands and relaxing the REFSENS specification needs to be proposed. 
     Hereinafter, the impact of the harmonics, IMD, and/or cross band isolations in the DC case based on the DC combinations is analyzed. In addition, the MSD value for relaxing the RESENS specification based on the analyzed results is proposed. 
     For example, self-interference (for example, harmonics, IMD, and/or cross band isolations) occurring in the UE, which is configured with DC (1 LTE(or E-UTRA) FDD operation band and one NR TDD operation band), may be analyzed. In addition, the MSD value may be set based on the analyzed self-interference, and a reference sensitivity specification, which is relaxed due to the MSD, may be defined. 
     In other words, in the present disclosure, for the UE, which configured with the DC may be analyzed. In addition, in the present disclosure, the maximum sensitivity degradation (MSD) value may be proposed in consideration of a radio frequency (RF) structure in a combination of bands in which the impact of self-interference is analyzed. The proposed MSD makes it possible to make exceptions to the reference sensitivity of the band (for example, to relax the REFSENS based on the MSD value). The reference sensitivity to which the exceptions are applied during the UE test may be applied to the UE, and the UE may pass the UE test based on the applied reference sensitivity. 
     As described above, for the combination of the UL operating band and the DL operating band having the self-interference problem, the MSD needs to be determined. 
     For the DC band combinations, the MSD for one downlink band affected by the harmonic and/or IMD occurring during the dual uplink transmission based on two UL operating bands may be provided below. 
     Table 16 below shows an example of DC band combinations associated with the self-interference problem. For example, Table 16 summarizes the EN-DC band combinations with self-interference problems for DC operation for PC 2  UE. In detail, Table 16 shows an example of self-interference analysis for 1 LTE(or E-UTRA) FDD operation band and one NR TDD operation band DC operation. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 16 
               
               
                   
               
               
                   
                   
                   
                 Inter- 
                 interference 
                   
               
               
                   
                   
                 Harmonic 
                 modulation 
                 due to small 
               
               
                 Downlink band 
                 Uplink DC 
                 relation 
                 to own rx 
                 frequency 
               
               
                 configuration 
                 Configuration 
                 issues 
                 band 
                 separation 
                 MSD 
               
               
                   
               
             
            
               
                 DC_2_n41 
                 DC_2A-n41A 
                 No harmonic 
                 No IMD 
                 Need to 
                 0.6 dB MSD value 
               
               
                   
                   
                 problem 
                 problem 
                 define 
                 for PC3 was 
               
               
                   
                   
                 between two 
                 into B2 
                 MSD for 
                 defined. −&gt; need 
               
               
                   
                   
                 band 
                 No IMD 
                 cross band 
                 to define new MSD 
               
               
                   
                   
                   
                 problem 
                 isolation 
                 values for PC2 
               
               
                   
                   
                   
                 into n41 
                 issue in 
               
               
                   
                   
                   
                   
                 Band 2 
               
               
                 DC_66_n41 
                 DC_66A_n41A 
                 No harmonic 
                 No IMD 
                 Need to 
                 3.5 dB MSD value 
               
               
                   
                   
                 problem 
                 problem 
                 define 
                 for PC3 was 
               
               
                   
                   
                 between two 
                 into B66 
                 MSD for 
                 defined. −&gt; need 
               
               
                   
                   
                 band 
                 4th IMD 
                 cross band 
                 to define new MSD 
               
               
                   
                   
                   
                 fall into 
                 isolation 
                 values for PC2 
               
               
                   
                   
                   
                 n41. But 
                 issue in 
               
               
                   
                   
                   
                 TDD band 
                 Band 66 
               
               
                   
                   
                   
                 only allow 
               
               
                   
                   
                   
                 Tx or Rx in 
               
               
                   
                   
                   
                 the same 
               
               
                   
                   
                   
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 DC_7_n78 
                 DC_7A_n78A 
                 No harmonic 
                 No IMD 
                 Need to 
                 4.5 dB MSD value 
               
               
                   
                   
                 problem 
                 problem 
                 define 
                 for PC3 was 
               
               
                   
                   
                 between two 
                 into B7 
                 MSD for 
                 defined. −&gt; need 
               
               
                   
                   
                 band 
                 4th IMD 
                 cross band 
                 to define new MSD 
               
               
                   
                   
                   
                 fall into 
                 isolation 
                 values for PC2 
               
               
                   
                   
                   
                 n78. But 
                 issue in 
               
               
                   
                   
                   
                 TDD band 
                 Band 7 
               
               
                   
                   
                   
                 only allow 
               
               
                   
                   
                   
                 Tx or Rx in 
               
               
                   
                   
                   
                 the same 
               
               
                   
                   
                   
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 DC_2_n77 
                 DC_2A_n77A 
                 2 nd   
                 2 nd , 4 th  &amp; 5 th   
                 No cross 
                 26.0 dB/8.0 dB 
               
               
                   
                   
                 harmonic 
                 IMDs fall 
                 band 
                 MSD values by 
               
               
                   
                   
                 from B2 fall 
                 into B2 
                 isolation 
                 2 nd /4 th  IMD are 
               
               
                   
                   
                 into n77. 
                 4 th  &amp; 5 th   
                 issues 
                 specified for PC3 
               
               
                   
                   
                 But TDD band 
                 IMDs fall 
                   
                 DC_2A_n78A 
               
               
                   
                   
                 only allow 
                 into n77. 
                   
                 UE. −&gt; need 
               
               
                   
                   
                 Tx or Rx in 
                 But TDD band 
                   
                 to define new MSD 
               
               
                   
                   
                 the same 
                 only allow 
                   
                 values for PC2 UE 
               
               
                   
                   
                 time −&gt; 
                 Tx or Rx in 
               
               
                   
                   
                 No issue 
                 the same 
               
               
                   
                   
                   
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 DC_5_n77 
                 DC_5A_n77A 
                 4 th  &amp; 5 th   
                 4 th  &amp; 5 th   
                 No cross 
                 8.3 dB MSD value 
               
               
                   
                   
                 harmonics 
                 IMDs fall 
                 band 
                 by 4 th  IMD is 
               
               
                   
                   
                 from B5 fall 
                 into B5 
                 isolation 
                 specified for PC3 
               
               
                   
                   
                 into n77. 
                 2 nd  &amp; 5 th   
                 issues 
                 DC_5A_n78A 
               
               
                   
                   
                 But TDD band 
                 IMDs fall 
                   
                 UE. −&gt; need 
               
               
                   
                   
                 only allow 
                 into n77. 
                   
                 to define new MSD 
               
               
                   
                   
                 Tx or Rx in 
                 But TDD band 
                   
                 values for PC2 UE 
               
               
                   
                   
                 the same 
                 only allow 
               
               
                   
                   
                 time −&gt; 
                 Tx or Rx in 
               
               
                   
                   
                 No issue 
                 the same 
               
               
                   
                   
                   
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 DC_13_n77 
                 DC_13A_n77A 
                 5 th   
                 5 th   
                 No cross 
                 There is no MSD 
               
               
                   
                   
                 harmonics 
                 IMD fall 
                 band 
                 requirements for 
               
               
                   
                   
                 from B13 fall 
                 into B132 nd   
                 isolation 
                 PC3 DC_13A_n77A 
               
               
                   
                   
                 into n77. 
                 IMD fall 
                 issues 
                 UE. −&gt; need 
               
               
                   
                   
                 But TDD band 
                 into n77. 
                   
                 to define new MSD 
               
               
                   
                   
                 only allow 
                 But TDD band 
                   
                 values for PC2 UE 
               
               
                   
                   
                 Tx or Rx in 
                 only allow 
               
               
                   
                   
                 the same 
                 Tx or Rx in 
               
               
                   
                   
                 time −&gt; 
                 the same 
               
               
                   
                   
                 No issue 
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 DC_66_n77 
                 DC_66A_n77A 
                 2 nd   
                 2 nd  &amp; 5 th   
                 No cross 
                 5.0 dB MSD value 
               
               
                   
                   
                 harmonic 
                 IMDs fall 
                 band 
                 by 5 th  IMD is 
               
               
                   
                   
                 from B66 fall 
                 into B66. 
                 isolation 
                 specified for PC3 
               
               
                   
                   
                 into n77. 
                 4 th  &amp; 5 th   
                 issues 
                 DC_66A_n78A 
               
               
                   
                   
                 But TDD band 
                 IMDs fall 
                   
                 UE. −&gt; need 
               
               
                   
                   
                 only allow 
                 into n77. 
                   
                 to define new MSD 
               
               
                   
                   
                 Tx or Rx in 
                 But TDD band 
                   
                 values for PC2 UE 
               
               
                   
                   
                 the same 
                 only allow 
               
               
                   
                   
                 time −&gt; 
                 Tx or Rx in 
               
               
                   
                   
                 No issue 
                 the same 
               
               
                   
                   
                   
                 time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                   
               
            
           
         
       
     
     Alphabets (A, B, C, D, and the like) after the number in Table 16 refer to a bandwidth class described in the example of Table 11 and Table 12. 
     There are cross band isolation issues and IMD problems to the own Rx band when dual uplink is applied. Hence, First Example of the Disclosure of the Present Specification may define the MSD requirements for PC 2  DC (1 LTE FDD band+1 NR TDD band) band combinations. 
     Referring to Table 16, the self-interference problem of various DC band combinations are needed to be analyzed in the present specification. That is, the MSD values for various EN-DC band combinations are not defined yet. 
       FIG. 10  shows an example of cross-band isolation issue according to Table 16.  FIG. 11  shows an example of IMD issue according to Table 16. 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 10  illustrates an example of cross-band isolation issue for PC 2  EN-DC with band combination of NR operating band n 41  and E-UTRA operating band  66 . 
       FIG. 10  shows an example of self interference (e.g. cross band isolations) affecting the downlink band  66  for EN-DC with band combination NR operating band n 41 , and E-UTRA operating band  66 . For example, the cross band isolations affecting the E-UTRA downlink band  66  in the EN-DC combination of NR operating band n 41 , and E-UTRA operating band  66 . 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 11  illustrates an example of IMD issue for PC 2  EN-DC with band combination of downlink bands n 77 ,  66  and uplink bands n 77 ,  66 . 
       FIG. 10  shows an example of self interference (e.g. IMD  2  and/or IMD 5 ) affecting the downlink band  66  for EN-DC with band combination downlink bands n 77 ,  66  and uplink bands n 77 ,  66 . For example, the IMD  2  and/or  5  affecting the downlink band  66  in the combination of DC_ 66 A_n 77 A downlink band and DC_ 66 A_n 77 A uplink band. 
     Referring to  FIG. 11 , a 2 nd  order IMD (IMD  2 ) and/or 5th order IMD (IMD  5 ) component of an uplink signal transmitted in the uplink band n 77  and an uplink signal transmitted in the uplink band  66  may fall into a frequency range of the downlink band  66 . 
     The worst case, where the impact of the IMD  2  within the frequency range of the downlink band  66  is greatest, is the case where a center frequency of the uplink band n 77  is 3860 MHz, a center frequency of the uplink operating band  66  is 1730 MHz, and a center frequency of the downlink operating band  66  is 2130 MHz. In this case, since 3860−1730=2130, the frequency of the IMD 2  component of the uplink bands  66  and n 77  coincides with the center frequency of the downlink band  66 . 
     The worst case, where the impact of the IMD  5  within the frequency range of the downlink band  66  is greatest, is the case where a center frequency of the uplink band n 77  is 3660 MHz, a center frequency of the uplink operating band  66  is 1730 MHz, and a center frequency of the downlink operating band  66  is 2130 MHz. In this case, since 3660*2−1730*3=2130, the frequency of the IMD 5  component of the uplink bands  66  and n 77  coincides with the center frequency of the downlink band  66 . 
     For example, for EN-DC band combination of the DC_ 2 _n 41  downlink band and the DC_ 2 A_n 41 A uplink band, cross band isolation issue in E-UTRA operating band  2  is not analyzed previously. For example, for EN-DC band combination of the DC_ 66 _n 41  downlink band and the DC_ 66 A_n 41 A uplink band, cross band isolation issue in E-UTRA operating band  66  is not analyzed previously. For example, for EN-DC band combination of the DC_ 7 _n 78  downlink band and the DC_ 7 A_n 78 A uplink band, cross band isolation issue in E-UTRA operating band  7  is not analyzed previously. For example, for DC band combination of the DC_ 2 _n 77  downlink band and the DC_ 2 A_n 77 A uplink band, 2nd, 4th, 6th IMD in E-UTRA operating band  2  are not analyzed previously. For example, for DC band combination of the DC_ 5 _n 77  downlink band and the DC_ 5 A_n 77 A uplink band, 4 th  and 6th IMD in E-UTRA operating band  5  are not analyzed previously. For example, for DC band combination of the DC_ 13 _n 77  downlink band and the DC_ 13 A_n 77 A uplink band,  6 th IMD in E-UTRA operating band  13  are not analyzed previously. For example, for DC band combination of the DC_ 66 _n 77  downlink band and the DC_ 66 A_n 77 A uplink band, 2 nd  and 5th IMD in E-UTRA operating band  66  are not analyzed previously. 
     Hereinafter, analysis for PC 2  DC band combinations are described. 
     1) Analysis Based on Cross Band Isolation Issues 
     Table 17 shows examples of the MSD requirements, which were conventionally defined, for cross band isolation issues for power class  3  DC UE with LTE 1 FDD band and NR 1 TDD band combinations. 
     
       
         
           
               
             
               
                 TABLE 17 
               
             
            
               
                   
               
               
                 E-UTRA or NR Band/Channel bandwidth of the affected DL band/MSD 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 5 
                 10 
                 15 
                 20 
                 25 
                 30 
                 40 
                 50 
                 60 
                 70 
                 80 
                 90 
                 100 
               
               
                 UL 
                 DL 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
               
               
                 band 
                 band 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 n1 
                 3 
                 3 
                 2.3 
                 2 
                 1.8 
                   
                   
                   
                   
                   
                   
                   
                   
                   
               
               
                 (Note 3) 
               
               
                 n1  
                 40  
                 6.6 
                 6.6 
                 6.6 
                 6.6 
               
               
                 1 
                 n3  
                 3 
                 2.2 
                 1.9 
                 1.7 
                 1.6 
                 1.5 
                 1.4 
               
               
                 (Note 3) 
               
               
                 1 
                 n40 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                   
                 6.6 
               
               
                 1 
                 n41 
                   
                 6.1 
                 6.1 
                 6.1 
                   
                 6.1 
                 6.1 
                 6.1 
                 6.1 
                   
                 6.1 
                 6.1 
                 6.1 
               
               
                 n3  
                 11  
                 6.4 
                 6.1 
               
               
                 3 
                 n41 
                   
                 0.7 
                 0.7 
                 0.7 
                   
                 0.7 
                 0.7 
                 0.7 
                 0.7 
                   
                 0.7 
                 0.7 
                 0.7 
               
               
                 3 
                 n51 
                 6.4 
               
               
                 30  
                 n66 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n3  
                 41  
                 0.7 
                 0.7 
                 0.7 
                 0.7 
               
               
                 n5  
                 28  
                 4.5 
                 3 
                 2.2 
                 0.3 
               
               
                 7 
                 n40 
                 3.7 
                 3.4 
                 3.2 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                   
                 3.1 
               
               
                 n38 
                 1 
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n38 
                 2 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n38 
                 4 
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n38 
                 66  
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n40 
                 1 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n41 
                 4 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                 40  
                 n1  
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n40 
                 7 
                 3.7 
                 3.7 
                 3.7 
                 3.7 
               
               
                 n41 
                 1 
                 9.1 
                 9.1 
                 9.1 
                 9.1 
               
               
                 n41 
                 2 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n41 
                 3 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 41  
                 n3  
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n41 
                 66 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                   
                 (Note 1) 
               
               
                 n41 
                 25  
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n50 
                 3 
                 2.5 
                 1.9 
                 1.6 
                 1.5 
               
               
                 n77 
                 7 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n77 
                 41 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 41  
                 n77 
                   
                 8.3 
                 8.3 
                 8.3 
                 7.3 
                 6.5 
                 6.3 
                 5.3 
                 4.5 
                 4.3 
                 4.0 
                 3.9 
                 3.8 
               
               
                 n78 
                 7 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n78 
                 38  
                 3.3 
                 3.3 
                 3.3 
                 3.3 
               
               
                 n78 
                 41 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n78 
                 46  
                   
                   
                   
                 7 
               
               
                 41  
                 n78 
                   
                 8.3 
                 8.3 
                 8.3 
                 7.3 
                 6.5 
                 6.3 
                 5.3 
                 4.5 
                 4.3 
                 4.0 
                 3.9 
                 3.8 
               
               
                 n84 
                 3 
                 3 
                 2.3 
                 2 
                 1.8 
               
               
                 (Note 3) 
               
               
                   
               
            
           
         
       
     
     Table 17 shows examples of Reference sensitivity exceptions (e.g. MSD) due to cross band isolation for PC 3  EN-DC in NR FR 1 . 
     The following NOTEs 1 to 5 are applied to examples of Table 17. 
     NOTE 1: Applicable only when harmonic mixing MSD for this combination is not applied. Herein, harmonic mixing may mean that additional non-linear source will be generated by the reciprocal of fundamental signal frequency (fc) such as ½ fc, ¼*fc, ⅛*fc elements. Herein, fc means center frequency. 
     NOTE 2: The B 41  requirements (requirements related to E-UTRA operating band  41 ) are modified by −0.5 dB when carrier frequency of the assigned E-UTRA channel bandwidth is within 2515-2690 MHz. 
     NOTE 3: These requirements apply when the uplink is active in NR Band n 1 , n 84  and the separation between the lower edge of the uplink channel in Band n 1 , n 84  and the upper edge of the downlink channel in Band  3  is &lt;60 MHz. For each channel bandwidth in Band  3 , the requirement applies regardless of channel bandwidth in Band n 1 , n 84 . 
     NOTE 4: The DL victim band should be configured using the lowest SCS that is compatible with the highest CBW for which an MSD is specified. 
     NOTE  5 : MSD test point can be chosen according to supported BW and lowest SCS supported by the UE. 
     In here, power combination of 23 dBm+23 dBm or power combination of 23 dBm+26 dBm per LTE or NR system for PC 2  DC UE are allowed. And PC 2  transmission per E-UTRA is not allowed. For example, when PC 2  DC is configured for the UE, it is not allowed for the UE to transmit signal based on transmission power of 26 dBM on E-UTRA. 
     Based on the specified MSD value, the present specification analyse the MSD value for the PC 2  DC_ 2 A_n 41 A, DC_ 66 A_n 41 A and DC_ 7 A_n 78 A UE with follow simulation assumptions in Table 18 to Table 20 when NR Transmission power is configured with 26 dBm 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 18 
               
               
                   
                   
               
             
            
               
                   
                 Band n41 PA noise @Band 2 Rx (dBm/Hz) 
                 −118 
               
               
                   
                 RFIC IIP2 (dBm) 
                 50 
               
               
                   
                 n41 front end filter Loss (dB) 
                 4 
               
               
                   
                 B2 front end filter Loss (dB) 
                 4 
               
               
                   
                 PA to antenna and LNA to antenna IL (dB) 
                 4 
               
               
                   
                 B2/B41 diplexer isolation (dB) 
                 10 
               
               
                   
                 B41 filter attenuation @ B2 RX (dB) 
                 30 
               
               
                   
                 Cross-band isolation (dB) (n41 Tx --&gt; B2 Rx) 
                 44 
               
               
                   
                 Rx Antenna isolation (dB) 
                 10 
               
               
                   
                   
               
            
           
         
       
     
     Table 18 shows simulation assumptions for DC band combination  2 A and n 41 A for MSD requirements. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 19 
               
               
                   
                   
               
             
            
               
                   
                 Band n41 PA noise @Band 66 Rx (dBm/Hz) 
                 −117 
               
               
                   
                 RFIC IIP2 (dBm) 
                 50 
               
               
                   
                 n41 front end filter Loss (dB) 
                 4 
               
               
                   
                 B66 front end filter Loss (dB) 
                 4 
               
               
                   
                 PA to antenna and LNA to antenna IL (dB) 
                 4 
               
               
                   
                 B66/B41 diplexer isolation (dB) 
                 10 
               
               
                   
                 B41 filter attenuation @ B66 RX (dB) 
                 30 
               
               
                   
                 Cross-band isolation (dB) (n41 Tx --&gt; B66 Rx) 
                 42 
               
               
                   
                 Rx Antenna isolation (dB) 
                 10 
               
               
                   
                   
               
            
           
         
       
     
     Table 19 shows simulation assumptions for DC band combination  66 A and n 41 A for MSD requirements. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 20 
               
               
                   
                   
               
             
            
               
                   
                 Band n78 PA noise @Band 7 Rx (dBm/Hz) 
                 −115 
               
               
                   
                 RFIC IIP2 (dBm) 
                 50 
               
               
                   
                 n78 front end filter Loss (dB) 
                 4 
               
               
                   
                 B7 front end filter Loss (dB) 
                 4 
               
               
                   
                 PA to antenna and LNA to antenna IL (dB) 
                 4 
               
               
                   
                 B7/n78 diplexer isolation (dB) 
                 10 
               
               
                   
                 n78 filter attenuation @ B7 RX (dB) 
                 30 
               
               
                   
                 Band 7 Cross-band isolation (dB) at Band n78 Rx (Tx 
                 40 
               
               
                   
                 filter) 
               
               
                   
                 Rx Antenna isolation (dB) 
                 10 
               
               
                   
                   
               
            
           
         
       
     
     Table 20 shows simulation assumptions for DC band combination  7 A and n 78 A for MSD requirements. 
     In examples of Table 18 to Table 20, PA may mean a power amplifier. RFIC IIP 2 (input 2 nd  order intercept point) may mean the expected input IP 2  level of Radio Frequency Integrated Circuits (RFIC) in data sheet or measured level. LNA may mean a low noise amplifier. 
     By performing simulation based on the simulation assumptions for PC 2  DC in Table 18 to Table 20, the cross band isolations and MSD for various DC band combinations are analyzed. 
     Based on the above simulation assumptions, the MSD values are derived as follow by using maximum-ratio combining (MRC) combining. 
     Table 21 shows derived MSD values due to cross band isolation for PC 2  for DC band combinations for power combination of 23 dBm+26 dBm. Herein, 23 dBm+26 dBm may mean that maximum output power of 23 dBm is used for E-UTRA operating band and maximum output power of 26 dBm is used for NR operating band. 
     
       
         
           
               
             
               
                 TABLE 21 
               
             
            
               
                   
               
               
                 E-UTRA or NR Band/Channel bandwidth of the affected DL band/MSD 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 5 
                 10 
                 15 
                 20 
                 25 
                 30 
                 40 
                 50 
                 60 
                 80 
                 90 
                 100 
               
               
                 UL 
                 DL 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
               
               
                 band 
                 band 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 n41 
                 2 
                 2.3 
                 2.3 
                 2.3 
                 2.3 
                   
                   
                   
                   
                   
                   
                   
                   
               
               
                 n41 
                 66 
                 5.3 
                 5.3 
                 5.3 
                 5.3 
               
               
                 n78 
                 7 
                 6.5 
                 6.5 
                 6.5 
                 6.5 
               
               
                   
               
            
           
         
       
     
     In Table 21, 5 Mhz, 10 MHz, 15 MHz, . . . may mean channel bandwidth of the affected DL band. 
     For reference, ±α tolerance may be applied to the MSD values shown in the Table 21. α may be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, . . . 2.7. For example, MSD values proposed in the present specification may include MSD value to which the ±α tolerance is applied. 
     The reception performance of the UE can be tested by applying the MSD values in Table 21 to the reference sensitivity of the downlink operating band of the various EN-DC band combinations. In other words, the MSD values in Table 21 may be applied to the reference sensitivity of the downlink operating band of the various EN-DC band combinations and may be used when the reception performance of the UE is tested. The transceiver (or receiver) of the UE that passed the test satisfies the minimum requirements based on the reference sensitivity to which the MSD values in Table 21 apply. 
     2) Analysis Based on Inter-Modulation Problems by Dual Uplink 
     For the MSD analysis based on Inter-modulation problems by dual uplink for PC  2  DC band combinations, the present specification uses simulations based on parameters shown in Table 22 and Table 23. 
     The present specification provides analysis of the required MSD values in the own Rx band by IMD product from dual uplink transmission. In Table 22 and Table 23, examples of the basic RF simulation assumptions are shown. 
     
       
         
           
               
               
               
               
             
               
                   
                 TABLE 22 
               
             
            
               
                   
                   
               
               
                   
                   
                 Diplexer 
                   
               
               
                   
                   
                 Architecture w/single ant. 
               
               
                   
                   
                 PC2 for DC_2A_n77A, DC_5A_n77A, 
               
               
                   
                 UE ref. 
                 DC_13A_n77A and DC_66A_n77A 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 architecture 
                 IP2 
                 IP3 
                 IP4 
                 IP5 
               
               
                   
                 Component 
                 (dBm) 
                 (dBm) 
                 (dBm) 
                 (dBm) 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Ant. Switch 
                 112 
                 68 
                 55 
                 55 
               
               
                   
                 Triplexer 
                 110 
                 72 
                 55 
                 52 
               
               
                   
                 Diplexer 
                 115 
                 87 
                 55 
                 55 
               
               
                   
                 Duplexer 
                 100 
                 75 
                 55 
                 53 
               
               
                   
                 PA Forward 
                 28.0 
                 32 
                 30 
                 28 
               
               
                   
                 PA Reversed 
                 40 
                 30.5 
                 30 
                 30 
               
               
                   
                 LNA 
                 10 
                 0 
                 0 
                 −10 
               
               
                   
                   
               
            
           
         
       
     
     Table 22 shows an example of UE RF Front-end component parameters 
     Here, IP n may mean an nth order intercept point. For example, IP 4  is a 4th order intercept point. LNA may mean a low noise amplifier. PA may mean a power amplifier. 
     By using simulation based on UE reference architecture and the RF component parameters in Table  16 , the IMD problem and MSD for various DC band combinations are analyzed. 
     
       
         
           
               
               
               
             
               
                 TABLE 23 
               
               
                   
               
               
                 Isolation Parameter 
                 Value (dB) 
                 Comment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                 Antenna to Antenna 
                 10 
                 Main antenna to diversity antenna 
               
               
                 PA (out) to PA (in) 
                 60 
                 PCB isolation (PA forward mixing) 
               
               
                 Triplexer 
                 20 
                 High/low band isolation 
               
               
                 Diplexer 
                 25 
                 High/low band isolation 
               
               
                 PA (out) to PA (out) 
                 60 
                 L-H/H-L cross-band 
               
               
                 PA (out) to PA (out) 
                 50 
                 H-H cross-band 
               
               
                 LNA (in) to PA (out) 
                 60 
                 L-H/H-L cross-band 
               
               
                 LNA (in) to PA (out) 
                 50 
                 H-H cross-band 
               
               
                 Duplexer 
                 50 
                 Tx band rejection at Rx band 
               
               
                   
               
            
           
         
       
     
     Table 23 shows an example of an isolation levels according to the RF component of a UE to analyze IMD and derive MSD level. 
     Table 23 shows an example of UE RF Front-end component isolation parameters. 
     Table 24 shows an example of conventionally existed MSD levels. 
     
       
         
           
               
             
               
                 TABLE 24 
               
             
            
               
                   
               
               
                 NR or E-UTRA Band/Channel bandwidth/N RB /MSD 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 EN-DC 
                 EUTRA or 
                 UL F c   
                 UL/DL BW 
                 UL 
                 DL F c   
                 MSD 
                 IMD 
               
               
                 Configuration 
                 NR band 
                 (MHz) 
                 (MHz) 
                 L CRB   
                 (MHz) 
                 (dB) 
                 order 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 DC_2A_n78A 
                 2 
                 1855 
                 5 
                 25 
                 1935 
                 26   
                 IMD2 
               
               
                 DC_2A_n78(2A) 
                   
                   
                   
                   
                   
                 28.7  
               
               
                   
                 n78 
                 3790 
                 10 
                 50 
                 3790 
                 N/A 
                 N/A 
               
               
                 DC_2A_n78A 
                 2 
                 1885 
                 5 
                 25 
                 1965 
                 8.0 
                 IMD4 
               
               
                 DC_2A_n78(2A) 
                   
                   
                   
                   
                   
                 10.7  
               
               
                   
                 n78 
                 3690 
                 10 
                 50 
                 3690 
                 N/A 
                 N/A 
               
               
                 DC_5A_n78A 
                 5 
                 844 
                 5 
                 25 
                 889 
                 8.3 
                 IMD4 
               
               
                 DC_5A_n78(2A) 
                 n78 
                 3421 
                 10 
                 50 
                 3421 
                 N/A 
                 N/A 
               
               
                 DC_66A_n78A 
                 66  
                 1730 
                 5 
                 25 
                 2150 
                 5.0 
                 IMD5 
               
               
                   
                 n78 
                 3660 
                 10 
                 50 
                 3660 
                 N/A 
                 N/A 
               
               
                   
               
            
           
         
       
     
     Table 24 shows an example of MSD test requirements for PC 3  EN-DC in NR FR 1  (two bands). 
     As described above, based on the simulation based on Tables 20 to 22, the IMD problem and MSD for the various DC band combinations are analyzed. 
     For example, for the worst case where the impact of IMD on downlink operating band in the various DC band combinations, simulations based on Tables 20 to 22 are performed. The IMD and MSD analysis are performed according to the simulations performed, and the MSD values determined according to the analysis results are shown in Table 25. For example, based on above assumptions and test configuration, the MSD levels are proposed as below. 
     
       
         
           
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 25 
               
               
                   
               
               
                   
                 UL 
                   
                 UL F c   
                 UL BW 
                 UL RB 
                 DL F c   
                 DL BW 
                 MSD 
               
               
                 DC bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 # 
                 (MHz) 
                 (MHz) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 DC_2A_n77A 
                  2 
                 IMD2 
                 1855 
                 5 
                 25 
                 1935 
                 5 
                 32.6 
               
               
                   
                 n77 
                 |f B2  − f n77 | 
                 3790 
                 10 
                 50 
                 3790 
                 10 
                 N/A 
               
               
                   
                  2 
                 IMD4 
                 1885 
                 5 
                 25 
                 1965 
                 5 
                 17.5 
               
               
                   
                 n77 
                 |3*f B2  − f n77 | 
                 3690 
                 10 
                 50 
                 3690 
                 10 
                 N/A 
               
               
                 DC_5A_n77A 
                  5 
                 IMD4 
                 844 
                 5 
                 25 
                 889 
                 5 
                 17.7 
               
               
                   
                 n77 
                 |3*f B5  − f n77 | 
                 3421 
                 10 
                 50 
                 3421 
                 10 
                 N/A 
               
               
                 DC_13A_n77A 
                 13 
                 IMD5 
                 782 
                 5 
                 25 
                 751 
                 5 
                 11.3 
               
               
                   
                 n77 
                 |4*f B13  − f n77 | 
                 3879 
                 10 
                 50 
                 3879 
                 10 
                 N/A 
               
               
                 DC_66A_n77A 
                 66 
                 IMD2 
                 1730 
                 5 
                 25 
                 2130 
                 5 
                 34.6 
               
               
                   
                 n77 
                 |f B66  − f n77 | 
                 3860 
                 10 
                 50 
                 3860 
                 10 
                 N/A 
               
               
                   
                 66 
                 IMD5 
                 1730 
                 5 
                 25 
                 2130 
                 5 
                 10.8 
               
               
                   
                 n77 
                 |3*f B66  − 2*f n77 | 
                 3660 
                 10 
                 50 
                 3660 
                 10 
                 N/A 
               
               
                   
               
            
           
         
       
     
     In Table 25, Fc means a center frequency. For example, UL Fc may mean the center frequency of the uplink operating band or the center frequency of the CC in the uplink operating band. 
     Table 25 shows an example of MSD test configuration and results derived based on IMD problems. Table 25 shows MSD values applicable to various DC band combinations. MSD values in Table 25 table may be considered to specify the MSD requirements. 
     For reference, ±α tolerance may be applied to the MSD values shown in the Table 25. α may be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, . . . 2.7. For an example, for DC band combination of DC_ 2 A_n 77 A downlink band and DC_ 2 A_n 77 A uplink band, the MSD value may be 32.6±α on downlink band n 77   
     The reception performance of the UE can be tested by applying the MSD values in Table  25  to the reference sensitivity of the downlink operating band of the various EN-DC band combinations. In other words, the MSD values in Table 25 may be applied to the reference sensitivity of the downlink operating band of the various EN-DC band combinations and may be used when the reception performance of the UE is tested. The transceiver (or receiver) of the UE that passed the test satisfies the minimum requirements based on the reference sensitivity to which the MSD values in Table 25 apply. 
     Based on simulation results explained in First Example of the Disclosure of the Present Specification, MSD levels are proposed as the following: 
     For cross-band isolation issue of PC 2  DC UE, the MSD values in Table 21 are proposed; and 
     For IMD problem by dual uplink transmission, the MSD values in Table 25 are proposed. 
     2. Second Example of the Disclosure of the Present Specification 
     Hereinafter, self-interference for PC 2  UE configured with NR inter-band CA is analyzed. PC 2  UE configured with NR inter-band CA may be referred to PC 2  NR inter-band CA UE. Various combinations of downlink operating bands and uplink operating bands in the second example of the disclosure of the present specification may be used for the inter-band CA. For example, for NR inter-band CA, combinations of two NR operating bands may be used. Based on the combinations of two NR operating bands, a UE may be configured to use 2 uplink operating bands (two NR operating bands) and 2 downlink operating bands (two NR operating bands). For example, one NR FDD operation band and one NR TDD operation band may be used as NR inter-band CA band combination. 
     Conventionally, the impact of harmonics, IMD, and/or cross band isolations on some combinations in the CA case (for example, NR inter-band CA case) has not been analyzed and the MSD values for the combinations in the CA case have not been discussed. For example, the impact of the harmonics and/or IMD for a combination of CA cases of Table 26, which will be described later, is not analyzed, and the MSD values have not been discussed. 
     In the NR inter-band CA case, the UE may perform dual uplink transmission through two uplink operating bands. In this case, the MSD value for analyzing the impact of the harmonics and/or IMD occurring in the downlink operating bands and relaxing the REFSENS specification needs to be proposed. 
     Hereinafter, the impact of the harmonics, IMD, and/or cross band isolations in the NR inter-band CA case based on the NR inter-band CA combinations is analyzed. In addition, the MSD value for relaxing the RESENS specification based on the analyzed results is proposed. 
     For example, self-interference (for example, harmonics, IMD, and/or cross band isolations) occurring in the UE, which is configured with NR inter-band CA (two NR operation bands), may be analyzed. In addition, the MSD value may be set based on the analyzed self-interference, and a reference sensitivity specification, which is relaxed due to the MSD, may be defined. 
     In other words, in the present disclosure, for the UE, which configured with the NR inter-band CA may be analyzed. In addition, in the present disclosure, the maximum sensitivity degradation (MSD) value may be proposed in consideration of a radio frequency (RF) structure in a combination of bands in which the impact of self-interference is analyzed. The proposed MSD makes it possible to make exceptions to the reference sensitivity of the band (for example, to relax the REFSENS based on the MSD value). The reference sensitivity to which the exceptions are applied during the UE test may be applied to the UE, and the UE may pass the UE test based on the applied reference sensitivity. 
     As described above, for the combination of the UL operating band and the DL operating band having the self-interference problem, the MSD needs to be determined. 
     For the NR inter-band CA band combinations, the MSD for one downlink band affected by the harmonic and/or IMD occurring during the dual uplink transmission based on two UL operating bands may be provided below. 
     Table 26 below shows an example of NR inter-band CA band combinations associated with the self-interference problem. For example, Table 26 summarizes the NR inter-band CA band combinations with self-interference problems for NR inter-band CA operation for PC 2  UE. In detail, Table 26 shows an example of self-interference analysis for two NR TDD operation bands NR inter-band CA operation. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 26 
               
               
                   
               
               
                   
                   
                   
                   
                 interference 
                   
               
               
                   
                   
                 Harmonic 
                   
                 due to small 
               
               
                 Downlink band 
                 Uplink DC 
                 relation 
                 intermodulation 
                 frequency 
               
               
                 configuration 
                 Configuration 
                 issues 
                 to own rx band 
                 separation 
                 MSD 
               
               
                   
               
             
            
               
                 CA_n3A-n78A 
                 CA_n3A-n78A 
                 2 nd  harmonic 
                 2 nd , 4 th  &amp; 5 th   
                 No cross 
                 Need to study 2 nd   
               
               
                   
                   
                 from n3 fall 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n78. But 
                 into n3 
                 isolation 
                 from n78 into n3. 
               
               
                   
                   
                 TDD band 
                   
                 issues 
                 Follow 31.9 dB/ 
               
               
                   
                   
                 only allow Tx 
                   
                   
                 18.5 dB MSD by 
               
               
                   
                   
                 or Rx in the 
                   
                   
                 2 nd /4 th  IMDs of 
               
               
                   
                   
                 same time −&gt; 
                   
                   
                 DC_3A_n78A 
               
               
                   
                   
                 No issue 
                   
                   
                 MSD valus for PC2 
               
               
                   
                   
                 Harmonic 
                   
                   
                 in TS38.101-3 
               
               
                   
                   
                 mixing issue 
                   
                   
                 V16.5.0. 
               
               
                   
                   
                 can be 
               
               
                   
                   
                 considered 
               
               
                   
                   
                 with 26 dBm 
               
               
                   
                   
                 from n78 
               
               
                   
                   
                 into n3 
               
               
                 CA_n25A-n41A 
                 CA_n25A-n41A 
                 No harmonic 
                 No IMD 
                 Need to 
                 0.6 dB MSD value 
               
               
                   
                   
                 problem or 
                 problem into n25 
                 define 
                 for PC3 was 
               
               
                   
                   
                 harmonic 
                 No IMD 
                 MSD for 
                 defined. −&gt; follow 
               
               
                   
                   
                 mixing 
                 problem into n41 
                 cross band 
                 same MSD values 
               
               
                   
                   
                 between two 
                   
                 isolation 
                 (2.3 dB) of PC2 
               
               
                   
                   
                 band 
                   
                 issue in n25 
                 DC_2A_n41A 
               
               
                 CA_n41A-n71A 
                 CA_n41A-n71A 
                 4 th  harmonic 
                 4 th   
                 No cross 
                 Need to study 4 th   
               
               
                   
                   
                 from n71 fall 
                 IMD fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n41 But 
                 into n71 
                 isolation 
                 impact on the n71 
               
               
                   
                   
                 TDD band 
                   
                 issues 
                 reception for both 
               
               
                   
                   
                 only allow Tx 
                   
                   
                 PC3 and PC2. 
               
               
                   
                   
                 or Rx in the 
                   
                   
                 11.0 dB was 
               
               
                   
                   
                 same time −&gt; 
                   
                   
                 defined for PC3 
               
               
                   
                   
                 No issue 
                   
                   
                 UE. Need to study 
               
               
                   
                   
                 4 th  harmonic 
                   
                   
                 MSD value by 4 th   
               
               
                   
                   
                 mixing issue 
                   
                   
                 IMD for PC2 UE 
               
               
                   
                   
                 can be 
               
               
                   
                   
                 considered 
               
               
                   
                   
                 with 26 dBm 
               
               
                   
                   
                 from n41 can 
               
               
                   
                   
                 impact to n71 
               
               
                 CA_n41A-n66A 
                 CA_n41A-n66A 
                 No harmonic 
                 No IMD 
                 Need to 
                 3.5 dB MSD value 
               
               
                   
                   
                 problem 
                 problem into n66 
                 define 
                 for PC3 was 
               
               
                   
                   
                 between two 
                 4 th   
                 MSD for 
                 defined. −&gt; follow 
               
               
                   
                   
                 band 
                 IMD fall 
                 cross band 
                 same MSD values 
               
               
                   
                   
                   
                 into n41. But 
                 isolation 
                 (5.3 dB) of PC2 
               
               
                   
                   
                   
                 TDD band 
                 issue in 
                 DC_66A_n41A. 
               
               
                   
                   
                   
                 only allow Tx 
                 n66 
               
               
                   
                   
                   
                 or Rx in the 
               
               
                   
                   
                   
                 same time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 CA_n40A-n79A 
                 CA_n40A-n79A 
                 2 nd  harmonic 
                 2 nd , 4 th  &amp; 5 th   
                 No cross 
                 Need to study 2 nd   
               
               
                   
                   
                 from n40 fall 
                 IMDs fall into 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n79. But 
                 n40. Also 4 th  &amp; 
                 isolation 
                 impact on the n40 
               
               
                   
                   
                 TDD band 
                 5 th  IMDs fall 
                 issues 
                 reception for both 
               
               
                   
                   
                 only allow Tx 
                 into n79. But 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 or Rx in the 
                 TDD band 
               
               
                   
                   
                 same time −&gt; 
                 only allow Tx 
               
               
                   
                   
                 No issue 
                 or Rx in the 
               
               
                   
                   
                 2 nd  harmonic 
                 same time −&gt; 
               
               
                   
                   
                 mixing issue 
                 No issue 
               
               
                   
                   
                 can be 
               
               
                   
                   
                 considered 
               
               
                   
                   
                 with 26 dBm 
               
               
                   
                   
                 from n79 fall 
               
               
                   
                   
                 into n40 
               
               
                 CA_n3A-n79A 
                 CA_n3A-n79A 
                 No harmonic 
                 5 th   
                 No cross 
                 No issue 
               
               
                   
                   
                 problem 
                 IMDs fall 
                 band 
               
               
                   
                   
                 between two 
                 into n3. 
                 isolation 
               
               
                   
                   
                 band 
                 4 th   
                 issues 
               
               
                   
                   
                   
                 IMD fall 
               
               
                   
                   
                   
                 into n79. But 
               
               
                   
                   
                   
                 TDD band 
               
               
                   
                   
                   
                 only allow Tx 
               
               
                   
                   
                   
                 or Rx in the 
               
               
                   
                   
                   
                 same time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 CA_n40A-n78A 
                 CA_n40A-n78A 
                 No harmonic 
                 4 th   
                 Need to 
                 4.5 dB MSD value 
               
               
                   
                   
                 problem 
                 IMD fall 
                 define 
                 for PC3 was 
               
               
                   
                   
                 between two 
                 into n40 &amp; n78. 
                 MSD for 
                 defined. −&gt; follow 
               
               
                   
                   
                 band 
                 But TDD band 
                 cross band 
                 same MSD values 
               
               
                   
                   
                   
                 only allow Tx 
                 isolation 
                 (6.5 dB) of PC2 
               
               
                   
                   
                   
                 or Rx in the 
                 issue in 
                 DC_7A_n78A. 
               
               
                   
                   
                   
                 same time −&gt; 
                 Band 40 
               
               
                   
                   
                   
                 No issue 
               
               
                 CA_n2A-n77A 
                 CA_n2A-n77A 
                 2 nd  harmonic 
                 2 nd , 4 th  &amp; 5 th   
                 No cross 
                 Need to study 2 nd   
               
               
                   
                   
                 from n2 fall 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n77. But 
                 into n2 
                 isolation 
                 impact on the n2 
               
               
                   
                   
                 TDD band 
                 4 th  &amp; 5 th   
                 issues 
                 reception for both 
               
               
                   
                   
                 only allow Tx 
                 IMDs fall 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 or Rx in the 
                 into n77. 
                   
                 26.0 dB/8.0 dB 
               
               
                   
                   
                 same time −&gt; 
                 But TDD band 
                   
                 MSD values by 2 nd / 
               
               
                   
                   
                 No issue 
                 only allow Tx 
                   
                 4 th  IMD are 
               
               
                   
                   
                 2 nd  harmonic 
                 or Rx in the 
                   
                 specified for PC3 
               
               
                   
                   
                 mixing issue 
                 same time −&gt; 
                   
                 DC_2A_n78A 
               
               
                   
                   
                 can be 
                 No issue 
                   
                 UE. −&gt; need to 
               
               
                   
                   
                 considered 
                   
                   
                 define new MSD 
               
               
                   
                   
                 with 26 dBm 
                   
                   
                 values by 2 nd  &amp; 4 th   
               
               
                   
                   
                 from n77 fall 
                   
                   
                 IMD for PC2 UE 
               
               
                   
                   
                 into n2 
               
               
                 CA_n5A-n77A 
                 CA_n5A-n77A 
                 4 th  &amp; 5 th   
                 4 th  &amp; 5 th   
                 No cross 
                 Need to study 4 th   
               
               
                   
                   
                 harmonics 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 from n5 fall 
                 into n5 
                 isolation 
                 impact on the n5 
               
               
                   
                   
                 into n77. But 
                 2 nd  &amp; 5 th   
                 issues 
                 reception for both 
               
               
                   
                   
                 TDD band 
                 IMDs fall 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 only allow Tx 
                 into n77. 
                   
                 8.3 dB MSD value 
               
               
                   
                   
                 or Rx in the 
                 But TDD band 
                   
                 by 4 th  IMD is 
               
               
                   
                   
                 same time −&gt; 
                 only allow Tx 
                   
                 specified for PC3 
               
               
                   
                   
                 No issue 
                 or Rx in the 
                   
                 DC_5A_n78A 
               
               
                   
                   
                 4 th  harmonic 
                 same time −&gt; 
                   
                 UE. −&gt; need to 
               
               
                   
                   
                 mixing issue 
                 No issue 
                   
                 define new MSD 
               
               
                   
                   
                 can be 
                   
                   
                 values by 4 th  &amp; 5 th   
               
               
                   
                   
                 considered 
                   
                   
                 IMD for PC2 UE 
               
               
                   
                   
                 with 26 dBm 
               
               
                   
                   
                 from n77 fall 
               
               
                   
                   
                 into n5 
               
               
                 CA_n66A-n77A 
                 CA_n66A-n77A 
                 2 nd  harmonic 
                 2 nd  &amp; 5 th   
                 No cross 
                 Need to study 2 nd   
               
               
                   
                   
                 from n66 fall 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n77. But 
                 into n66. 
                 isolation 
                 impact on the n66 
               
               
                   
                   
                 TDD band 
                 4 th  &amp; 5 th   
                 issues 
                 reception for both 
               
               
                   
                   
                 only allow Tx 
                 IMDs fall 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 or Rx in the 
                 into n77. 
                   
                 5.0 dB MSD value 
               
               
                   
                   
                 same time −&gt; 
                 But TDD band 
                   
                 by 5 th  IMD is 
               
               
                   
                   
                 No issue 
                 only allow Tx 
                   
                 specified for PC3 
               
               
                   
                   
                 2 nd  harmonic 
                 or Rx in the 
                   
                 DC_66A_n78A 
               
               
                   
                   
                 mixing issue 
                 same time −&gt; 
                   
                 UE. −&gt; need to 
               
               
                   
                   
                 can be 
                 No issue 
                   
                 define new MSD 
               
               
                   
                   
                 considered 
                   
                   
                 values by 2 nd  &amp; 5 th   
               
               
                   
                   
                 with 26 dBm 
                   
                   
                 IMDs for PC2 UE 
               
               
                   
                   
                 from n77 fall 
               
               
                   
                   
                 into n66 
               
               
                 CA_n25A-n77A 
                 CA_n25A-n77A 
                 2 nd  harmonic 
                 2 nd , 4 th  &amp; 5 th   
                 No cross 
                 Need to study 2 nd   
               
               
                   
                   
                 from n25 fall 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 into n77. But 
                 into n25 
                 isolation 
                 impact on the n25 
               
               
                   
                   
                 TDD band 
                 4 th  &amp; 5 th   
                 issues 
                 reception for both 
               
               
                   
                   
                 only allow Tx 
                 IMDs fall 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 or Rx in the 
                 into n77. 
                   
                 26.0 dB/8.0 dB 
               
               
                   
                   
                 same time −&gt; 
                 But TDD band 
                   
                 MSD values by 2 nd / 
               
               
                   
                   
                 No issue 
                 only allow Tx 
                   
                 4 th  IMD are 
               
               
                   
                   
                 2 nd  harmonic 
                 or Rx in the 
                   
                 specified for PC3 
               
               
                   
                   
                 mixing issue 
                 same time −&gt; 
                   
                 DC_2A_n78A 
               
               
                   
                   
                 can be 
                 No issue 
                   
                 UE. −&gt; can follow 
               
               
                   
                   
                 considered 
                   
                   
                 MSD req. for 
               
               
                   
                   
                 with 26 dBm 
                   
                   
                 DC_2A_n77A 
               
               
                   
                   
                 from n77 fall 
                   
                   
                 PC2 UE 
               
               
                   
                   
                 into n25 
               
               
                 CA_n41A-n77A 
                 CA_n41A-n77A 
                 No harmonic 
                 4 th   
                 Need to 
                 Fot cross band 
               
               
                   
                   
                 problem 
                 IMDs fall 
                 define 
                 isolation, 
               
               
                   
                   
                 between two 
                 into n41. 
                 MSD for 
                 4.5 dB for n41 was 
               
               
                   
                   
                 band 
                 3 rd  &amp; 4 th   
                 cross band 
                 defined for PC3 UE 
               
               
                   
                   
                   
                 IMDs fall 
                 isolation 
                 8.3 dB for n77 were 
               
               
                   
                   
                   
                 into n77. 
                 issue in 
                 defiend for PC3 
               
               
                   
                   
                   
                 But TDD band 
                 n41 and n77 
                 UE −&gt; need to 
               
               
                   
                   
                   
                 only allow Tx 
                   
                 define new MSD 
               
               
                   
                   
                   
                 or Rx in the 
                   
                 values for PC2 UE 
               
               
                   
                   
                   
                 same time −&gt; 
               
               
                   
                   
                   
                 No issue 
               
               
                 CA_n71A-n77A 
                 CA_n71A-n77A 
                 5 th  &amp; 6 th   
                 5 th   
                 No cross 
                 Need to study 5 th   
               
               
                   
                   
                 harmonic 
                 IMDs fall 
                 band 
                 harmonic mixing 
               
               
                   
                   
                 from n71 fall 
                 into n71. 
                 isolation 
                 impact on the n71 
               
               
                   
                   
                 into n77. But 
                 2 nd   
                 issues 
                 reception for both 
               
               
                   
                   
                 TDD band 
                 IMD fall 
                   
                 PC3 and PC2. 
               
               
                   
                   
                 only allow Tx 
                 into n77. But 
                   
                 5.5 dB for 
               
               
                   
                   
                 or Rx in the 
                 TDD band 
                   
                 DC_71A_n78A 
               
               
                   
                   
                 same time −&gt; 
                 only allow Tx 
                   
                 by IMD5 was 
               
               
                   
                   
                 No issue 
                 or Rx in the 
                   
                 defiend for PC3 
               
               
                   
                   
                 5 th  harmonic 
                 same time −&gt; 
                   
                 UE −&gt; need to 
               
               
                   
                   
                 mixing issue 
                 No issue 
                   
                 define new MSD 
               
               
                   
                   
                 can be 
                   
                   
                 values for PC2 UE 
               
               
                   
                   
                 considered 
               
               
                   
                   
                 with 26 dBm 
               
               
                   
                   
                 from n77 fall 
               
               
                   
                   
                 into n71 
               
               
                   
               
            
           
         
       
     
     Alphabets (A, B, C, D, and the like) after the number in Table 26 refer to a bandwidth class described in the example of Table 11 and Table 12. 
     According to examples in Table 26, there are harmonic mixing problem, cross band isolation issues and IMD problems to the own Rx band when dual uplink is applied for PC 2  NR inter-band CA UE. Hence, Second Example of the Disclosure of the Present Specification may defined the MSD requirements for PC 2  NR inter-band CA combinations. 
     Referring to Table 26, the self-interference problem of various DC band combinations is needed to be analyzed in the present specification. That is, the MSD values for various EN-DC band combinations are not defined yet. 
       FIG. 12  shows an example of cross-band isolation issue according to Table 26.  FIG. 13  shows an example of IMD issue according to Table 26. 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 12  illustrates an example of cross-band isolation issue for PC 2  inter-band CA with band combination of NR operating band n 41  and n 77 . 
       FIG. 12  shows an example of self interference (e.g. cross band isolations) affecting the downlink band n 77  for PC 2  inter-band CA with band combination NR operating band n 41 , and n 77 . For example, the cross band isolations affecting the E-UTRA downlink band n 77  in the PC 2  inter-band CA combination of NR operating band n 41 , and n 77 . 
     Aslo  FIG. 12  shows an example of self interference (e.g. cross band isolations) affecting the downlink band n 41  for PC 2  inter-band CA with band combination NR operating band n 41 , and n 77 . For example, the cross band isolations affecting the E-UTRA downlink band n 41  in the PC 2  inter-band CA combination of NR operating band n 41 , and n 77 . 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 13  illustrates an example of IMD issue for PC 2  inter-band CA with band combination of downlink bands n 77 , n 66  and uplink bands n 77 , n 66 . 
       FIG. 13  shows an example of self interference (e.g. IMD  2  and/or IMD 5 ) affecting the downlink band n 66  for PC 2  inter-band CA with band combination downlink bands n 77 , n 66  and uplink bands n 77 , n 66 . For example, the IMD  2  and/or  5  affecting the downlink band n 66  in the combination of CA_n 66 A_n 77 A downlink band and CA_n 66 A_n 77 A uplink band. 
     Referring to  FIG. 13 , a 2 nd  order IMD (IMD  2 ) and/or 5th order IMD (IMD  5 ) component of an uplink signal transmitted in the uplink band n 77  and an uplink signal transmitted in the uplink band n 66  may fall into a frequency range of the downlink band n 66 . 
     The worst case, where the impact of the IMD  2  within the frequency range of the downlink band n 66  is greatest, is the case where a center frequency of the uplink band n 77  is 3860 MHz, a center frequency of the uplink operating band n 66  is 1730 MHz, and a center frequency of the downlink operating band n 66  is 2130 MHz. In this case, since 3860−1730=2130, the frequency of the IMD 2  component of the uplink bands n 66  and n 77  coincides with the center frequency of the downlink band n 66 . 
     The worst case, where the impact of the IMD  5  within the frequency range of the downlink band n 66  is greatest, is the case where a center frequency of the uplink band n 77  is 3660 MHz, a center frequency of the uplink operating band n 66  is 1730 MHz, and a center frequency of the downlink operating band n 66  is 2130 MHz. In this case, since 3660*2−1730*3=2130, the frequency of the IMD 5  component of the uplink bands n 66  and n 77  coincides with the center frequency of the downlink band n 66 . 
     For example, for NR inter-band CA band combination of the CA_n 41 A-n 71 A downlink band and the CA_n 41 A-n 71 A uplink band, 4th harmonic mixing issue and/or 4 th  IMD issue in NR operating band n 71  are not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 40 A-n 79 A downlink band and the CA_n 40 A-n 79 A uplink band, 2nd harmonic mixing issue in NR operating band n 40  is not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 2 A-n 77 A downlink band and the CA_n 2 A-n 77 A uplink band, 2nd harmonic mixing issue in NR operating band n 2  and/or 2nd IMD and 4th IMD issue in NR operating band n 2  is not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 5 A-n 77 A downlink band and the CA_n 5 A-n 77 A uplink band, 4th harmonic mixing issue in NR operating band n 5  and/or 4th IMD issue and 5th IMD issue in NR operating band n 5  is not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 66 A-n 77 A downlink band and the CA_n 66 A-n 77 A uplink band, 2nd harmonic mixing issue in NR operating band n 66  and/or 2nd IMD issue and 5th IMD issue in NR operating band n 66  is not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 41 A-n 77 A downlink band and the CA_n 41 A-n 77 A uplink band, cross band isolation issue in NR operating band n 41  and n 77  is not analyzed previously. For example, for NR inter-band CA band combination of the CA_n 71 A-n 77 A downlink band and the CA_n 71 A-n 77 A uplink band, 5th harmonic mixing issue in NR operating band n 71  and/or 5th IMD issue in NR operating band n 71  is not analyzed previously. 
     Hereinafter, analysis for PC 2  NR inter-band CA band combinations are described. 
     1) Analysis Based on Cross Band Isolation Issues 
     Table 27 shows examples of the MSD requirements, which were conventionally defined, for cross band isolation issues for power class  3  DC UE with LTE 1 FDD band and NR 1 TDD band combinations. 
     
       
         
           
               
             
               
                 TABLE 27 
               
             
            
               
                   
               
               
                 E-UTRA or NR Band/Channel bandwidth of the affected DL band/MSD 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 5 
                 10 
                 15 
                 20 
                 25 
                 30 
                 40 
                 50 
                 60 
                 70 
                 80 
                 90 
                 100 
               
               
                 UL 
                 DL 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
               
               
                 band 
                 band 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 n1 
                 3 
                 3 
                 2.3 
                 2 
                 1.8 
                   
                   
                   
                   
                   
                   
                   
                   
                   
               
               
                 (Note 3) 
               
               
                 n1  
                 40  
                 6.6 
                 6.6 
                 6.6 
                 6.6 
               
               
                 1 
                 n3  
                 3 
                 2.2 
                 1.9 
                 1.7 
                 1.6 
                 1.5 
                 1.4 
               
               
                 (Note 3) 
               
               
                 1 
                 n40 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                 6.6 
                   
                 6.6 
               
               
                 1 
                 n41 
                   
                 6.1 
                 6.1 
                 6.1 
                   
                 6.1 
                 6.1 
                 6.1 
                 6.1 
                   
                 6.1 
                 6.1 
                 6.1 
               
               
                 n3  
                 11  
                 6.4 
                 6.1 
               
               
                 3 
                 n41 
                   
                 0.7 
                 0.7 
                 0.7 
                   
                 0.7 
                 0.7 
                 0.7 
                 0.7 
                   
                 0.7 
                 0.7 
                 0.7 
               
               
                 3 
                 n51 
                 6.4 
               
               
                 30  
                 n66 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n3  
                 41  
                 0.7 
                 0.7 
                 0.7 
                 0.7 
               
               
                 n5  
                 28  
                 4.5 
                 3 
                 2.2 
                 0.3 
               
               
                 7 
                 n40 
                 3.7 
                 3.4 
                 3.2 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                 3.1 
                   
                 3.1 
               
               
                 n38 
                 1 
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n38 
                 2 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n38 
                 4 
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n38 
                 66  
                 1.9 
                 1.9 
                 1.9 
                 1.9 
               
               
                 n40 
                 1 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n41 
                 4 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                 40  
                 n1  
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
                 8.3 
               
               
                 n40 
                 7 
                 3.7 
                 3.7 
                 3.7 
                 3.7 
               
               
                 n41 
                 1 
                 9.1 
                 9.1 
                 9.1 
                 9.1 
               
               
                 n41 
                 2 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n41 
                 3 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 41  
                 n3  
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n41 
                 66 
                 3.5 
                 3.5 
                 3.5 
                 3.5 
               
               
                   
                 (Note 1) 
               
               
                 n41 
                 25  
                 0.6 
                 0.6 
                 0.6 
                 0.6 
               
               
                 n50 
                 3 
                 2.5 
                 1.9 
                 1.6 
                 1.5 
               
               
                 n77 
                 7 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n77 
                 41 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 41  
                 n77 
                   
                 8.3 
                 8.3 
                 8.3 
                 7.3 
                 6.5 
                 6.3 
                 5.3 
                 4.5 
                 4.3 
                 4.0 
                 3.9 
                 3.8 
               
               
                 n78 
                 7 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n78 
                 38  
                 3.3 
                 3.3 
                 3.3 
                 3.3 
               
               
                 n78 
                 41 
                 4.5 
                 4.5 
                 4.5 
                 4.5 
               
               
                   
                 (Note 1) 
               
               
                 n78 
                 46  
                   
                   
                   
                 7 
               
               
                 41  
                 n78 
                   
                 8.3 
                 8.3 
                 8.3 
                 7.3 
                 6.5 
                 6.3 
                 5.3 
                 4.5 
                 4.3 
                 4.0 
                 3.9 
                 3.8 
               
               
                 n84 
                 3 
                 3 
                 2.3 
                 2 
                 1.8 
               
               
                 (Note 3) 
               
               
                   
               
            
           
         
       
     
     Table 27 shows examples of Reference sensitivity exceptions (e.g. MSD) due to cross band isolation for PC 3  EN-DC in NR FR 1 . 
     The following NOTEs 1 to 5 are applied to examples of Table 27. 
     NOTE 1: Applicable only when harmonic mixing MSD for this combination is not applied. Herein, harmonic mixing may mean that additional non-linear source will be generated by the reciprocal of fundamental signal frequency (fc) such as ½ fc, ¼*fc, ⅛*fc elements. 
     NOTE 2: The B 41  requirements (requirements related to E-UTRA operating band  41 ) are modified by −0.5 dB when carrier frequency of the assigned E-UTRA channel bandwidth is within 2515-2690 MHz. 
     NOTE 3: These requirements apply when the uplink is active in NR Band n 1 , n 84  and the separation between the lower edge of the uplink channel in Band n 1 , n 84  and the upper edge of the downlink channel in Band  3  is &lt;60 MHz. For each channel bandwidth in Band  3 , the requirement applies regardless of channel bandwidth in Band n 1 , n 84 . 
     NOTE 4: The DL victim band should be configured using the lowest SCS that is compatible with the highest CBW for which an MSD is specified. 
     NOTE 5: MSD test point can be chosen according to supported BW and lowest SCS supported by the UE. 
     In here, power combination of 23 dBm+23 dBm or power combination of 26 dBm+26 dBm for PC 2  NR inter-band CA UE are allowed. 
     Based on examples of MSD values of Table 27, we analyse the MSD value for CA_n 41 _n 25 , CA_n 41 _n 66 , CA_n 78 _n 40 , CA_n 77 _n 41 , CA_n 41 _n 77  with follow simulation assumptions. For example, based on the specified MSD value in Table 27, the present specification analyse the MSD value for the PC 2  CA_n 41 A-n 77 A UE with follow simulation assumptions in Table 28 and Table 29. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 28 
               
               
                   
                   
               
             
            
               
                   
                 Band n77 PA noise @NR n41 Rx (dBm/Hz) 
                 −115 
               
               
                   
                 RFIC IIP2 (dBm) 
                 50 
               
               
                   
                 n77 front end filter Loss (dB) 
                 4 
               
               
                   
                 n41 front end filter Loss (dB) 
                 4 
               
               
                   
                 PA to antenna and LNA to antenna IL (dB) 
                 4 
               
               
                   
                 n77/n41 diplexer isolation (dB) 
                 10 
               
               
                   
                 n77 filter attenuation @ n41 RX (dB) 
                 30 
               
               
                   
                 Cross-band isolation (dB) (n77 Tx −&gt; n41 Rx) 
                 40 
               
               
                   
                 Rx Antenna isolation (dB) 
                 10 
               
               
                   
                   
               
            
           
         
       
     
     Table 28 shows n 41  reception impact analysis parameters. Table 28 shows simulation assumptions for MSD requirements, which is for inter-band CA band combination n 41 A and n 77 A. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 29 
               
               
                   
                   
               
             
            
               
                   
                 Band n41 PA noise @n77 Rx (dBm/Hz) 
                 −115 
               
               
                   
                 RFIC IIP2 (dBm) 
                 50 
               
               
                   
                 n41 front end filter Loss (dB) 
                 4 
               
               
                   
                 n77 front end filter Loss (dB) 
                 4 
               
               
                   
                 PA to antenna and LNA to antenna IL (dB) 
                 4 
               
               
                   
                 n77/n41 diplexer isolation (dB) 
                 10 
               
               
                   
                 n41 filter attenuation @ n77 RX (dB) 
                 27 
               
               
                   
                 Cross-band isolation (dB) (n41 Tx −&gt; n77 Rx) 
                 38 
               
               
                   
                 Rx Antenna isolation (dB) 
                 10 
               
               
                   
                   
               
            
           
         
       
     
     Table 29 shows n 77  reception impact analysis parameters. Table 297 shows simulation assumptions for MSD requirements, which is for inter-band CA band combination n 41 A and n 77 A. 
     In examples of Table 28 and Table 29, PA may mean a power amplifier. RFIC IIP 2 (input 2 nd  order intercept point) may mean the expected input IP 2  level of Radio Frequency Integrated Circuits (RFIC) in data sheet or measured level. LNA may mean a low noise amplifier. 
     By performing simulation based on the simulation assumptions for PC 2  inter-band CA in Table 28 and Table 29, the cross band isolations and MSD for various inter-band CA band combinations are analyzed. 
     Based on the above simulation assumptions, the MSD values are derived as follow by using MRC combining. 
     Table 30 shows derived MSD values due to cross band isolation for PC 2  for DC band combinations for power combination of 23 dBm+23 dBm or 26 dBm+26 dBm for PC 2  NR inter-band CA UE. Herein, 23 dBm+23 dBm may mean that maximum output power of 23 dBm is used for NR operating bands and 26 dBm+26 dBm may mean that maximum output power of 26 dBm is used for NR operating bands. 
     
       
         
           
               
             
               
                 TABLE 30 
               
             
            
               
                   
               
               
                 NR Band/Channel bandwidth of the affected DL band/MSD 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 5 
                 10 
                 15 
                 20 
                 25 
                 30 
                 40 
                 50 
                 60 
                 70 
                 80 
                 90 
                 100 
               
               
                 UL 
                 DL 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
                 MHz 
               
               
                 band 
                 band 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 n41 
                 n25 
                 2.3 
                 2.3 
                 2.3 
                 2.3 
                   
                   
                   
                   
                   
                   
                   
                   
                   
               
               
                 n41 
                 n66 
                 5.3 
                 5.3 
                 5.3 
                 5.3 
               
               
                 n78 
                 n40 
                 6.5 
                 6.5 
                 6.5 
                 6.5 
               
               
                 n77 
                 n41 
                 6.5 
                 6.5 
                 6.5 
                 6.5 
               
               
                 n41 
                 n77 
                   
                 10.5 
                 10.5 
                 10.5 
                 9.5 
                 8.6 
                 8.3 
                 7.2 
                 6.3 
                 6.0 
                 5.7 
                 5.6 
                 5.6 
               
               
                   
               
            
           
         
       
     
     In Table 30, 5 Mhz, 10 MHz, 15 MHz, . . . may mean channel bandwidth of the affected DL band. 
     For example, PC 2  UE may be configured with inter-band CA based on CA band combination of NR operating band n 77  and n 41 . If downlink band n 41  and uplink band n 77  are configured for the UE, when downlink channel bandwidth is configured to be one of 5 MHz, 10 MHz, 15 MHz, or 20 MHz, MSD value is configured to be 6.5 dB. The MSD value may be applied to reference sensitivity used for receiving downlink signal. 
     For example, PC 2  UE may be configured with inter-band CA based on CA band combination of NR operating band n 41  and n 77 . If downlink band n 77  and uplink band n 41  are configured for the UE, when downlink channel bandwidth is configured to be one of 10 MHz, 15 MHz, 20 MHz, 25 MHz, . . . , or 100 MHz, MSD value is configured to be the value corresponding to the downlink channel bandwidth in Table 30. For example, when downlink channel bandwidth is configured to be 100 MHz, the MSD value is 5.6 dB. The MSD value may be applied to reference sensitivity used for receiving downlink signal. 
     For reference, ±α tolerance may be applied to the MSD values shown in the Table 30. α may be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, . . . 2.7. For example, MSD values proposed in the present specification may include MSD value to which the ±α tolerance is applied. 
     The reception performance of the UE can be tested by applying the MSD values in Table 30 to the reference sensitivity of the downlink operating band of the various CA band combinations. In other words, the MSD values in Table 30 may be applied to the reference sensitivity of the downlink operating band of the various CA band combinations and may be used when the reception performance of the UE is tested. The transceiver (or receiver) of the UE that passed the test satisfies the minimum requirements based on the reference sensitivity to which the MSD values in Table 30 apply. 
     2) Analysis Based on Inter-Modulation Problems by Dual Uplink 
     For the MSD analysis based on Inter-modulation problems by dual uplink for PC  2  inter-band CA band combinations, the present specification uses simulations based on parameters shown in Table 31 and Table 32. 
     The present specification provides analysis of the required MSD values in the own Rx band by IMD product from dual uplink transmission. In Table 31 and Table 32, examples of the basic RF simulation assumptions are shown. 
     
       
         
           
               
               
             
               
                 TABLE 31 
               
             
            
               
                   
               
               
                   
                 Diplexer 
               
               
                   
                 Architecture w/single ant. 
               
               
                   
                 PC2 for CA_n41A_n71A, CA_n2A_n77A, 
               
               
                   
                 CA_n5A_n77A, CA_n66A_n77A and 
               
               
                 UE ref. 
                 CA_n71A_n77A 
               
            
           
           
               
               
               
               
               
            
               
                 architecture 
                 IP2 
                 IP3 
                 IP4 
                 IP5 
               
               
                 Component 
                 (dBm) 
                 (dBm) 
                 (dBm) 
                 (dBm) 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Ant. Switch 
                 112 
                 68 
                 55 
                 55 
               
               
                 Triplexer 
                 110 
                 72 
                 55 
                 52 
               
               
                 Diplexer 
                 115 
                 87 
                 55 
                 55 
               
               
                 Duplexer 
                 100 
                 75 
                 55 
                 53 
               
               
                 PA Forward 
                 28.0 
                 32 
                 30 
                 28 
               
               
                 PA Reversed 
                 40 
                 30.5 
                 30 
                 30 
               
               
                 LNA 
                 10 
                 0 
                 0 
                 −10 
               
               
                   
               
            
           
         
       
     
     Table 31 shows an example of UE RF Front-end component parameters 
     Here, IP n may mean an nth order intercept point. For example, IP 4  is a 4th order intercept point. LNA may mean a low noise amplifier. PA may mean a power amplifier. 
     By using simulation based on UE reference architecture and the RF component parameters in Table 31, the IMD problem and MSD for various NR inter-band CA band combinations are analyzed. 
     
       
         
           
               
               
               
             
               
                 TABLE 32 
               
               
                   
               
               
                 Isolation Parameter 
                 Value (dB) 
                 Comment 
               
               
                   
               
             
            
               
                 Antenna to Antenna 
                 10 
                 Main antenna to diversity antenna 
               
               
                 PA (out) to PA (in) 
                 60 
                 PCB isolation (PA forward mixing) 
               
               
                 Triplexer 
                 20 
                 High/low band isolation 
               
               
                 Diplexer 
                 25 
                 High/low band isolation 
               
               
                 PA (out) to PA (out) 
                 60 
                 L-H/H-L cross-band 
               
               
                 PA (out) to PA (out) 
                 50 
                 H-H cross-band 
               
               
                 LNA (in) to PA (out) 
                 60 
                 L-H/H-L cross-band 
               
               
                 LNA (in) to PA (out) 
                 50 
                 H-H cross-band 
               
               
                 Duplexer 
                 50 
                 Tx band rejection at Rx band 
               
               
                   
               
            
           
         
       
     
     Table 32 shows an example of an isolation levels according to the RF component of a UE to analyze IMD and derive MSD level. 
     Table 32 shows an example of UE RF Front-end component isolation parameters. 
     Table 33 shows an example of conventionally existed MSD levels. 
     
       
         
           
               
             
               
                 TABLE 33 
               
             
            
               
                   
               
               
                 NR or E-UTRA Band/Channel bandwidth/N RB /MSD 
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 EN-DC 
                 EUTRA or 
                 UL F c   
                 UL/DL BW 
                 UL 
                 DL F c   
                 MSD 
                 IMD 
               
               
                 Configuration 
                 NR band 
                 (MHz) 
                 (MHz) 
                 L CRB   
                 (MHz) 
                 (dB) 
                 order 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
            
               
                 DC_2A_n78A 
                 2 
                 1855 
                 5 
                 25 
                 1935 
                 26   
                 IMD2 
               
               
                 DC_2A_n78(2A) 
                   
                   
                   
                   
                   
                 28.7  
               
               
                   
                 n78 
                 3790 
                 10 
                 50 
                 3790 
                 N/A 
                 N/A 
               
               
                 DC_2A_n78A 
                 2 
                 1885 
                 5 
                 25 
                 1965 
                 8.0 
                 IMD4 
               
               
                 DC_2A_n78(2A) 
                   
                   
                   
                   
                   
                 10.7  
               
               
                   
                 n78 
                 3690 
                 10 
                 50 
                 3690 
                 N/A 
                 N/A 
               
               
                 DC_5A_n78A 
                 5 
                 844 
                 5 
                 25 
                 889 
                 8.3 
                 IMD4 
               
               
                 DC_5A_n78(2A) 
                 n78 
                 3421 
                 10 
                 50 
                 3421 
                 N/A 
                 N/A 
               
               
                 CA_n41A-n71A 
                 n41 
                 2614 
                 5 
                 25 
                 2614 
                 N/A 
                 N/A 
               
               
                   
                 n71 
                 665 
                 5 
                 25 
                 619 
                 11   
                 IMD4 
               
               
                 DC_66A_n78A 
                 66  
                 1730 
                 5 
                 25 
                 2150 
                 5.0 
                 IMD5 
               
               
                   
                 n78 
                 3660 
                 10 
                 50 
                 3660 
                 N/A 
                 N/A 
               
               
                 DC_71A_n78A 
                 71 
                 681.5 
                 5 
                 25 
                 635.5 
                 5.5 
                 IMD5 
               
               
                   
                 n78 
                 3361.5 
                 10 
                 50 
                 3582.5 
                 N/A 
                 N/A 
               
               
                   
               
            
           
         
       
     
     Table 33 shows an example of MSD test requirements for PC 3  EN-DC in NR FR 1  (two bands). 
     As described above, based on the simulation based on Tables 29 to 31, the IMD problem and MSD for the various DC band combinations are analyzed. 
     For example, for the worst case where the impact of IMD on downlink operating band in the various NR inter-band CA band combinations, simulations based on Tables 29 to 31 are performed. The IMD and MSD analysis are performed according to the simulations performed, and the MSD values determined according to the analysis results are shown in Table 34. For example, based on above assumptions and test configuration, the MSD levels are proposed as below. 
     
       
         
           
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 34 
               
               
                   
               
               
                   
                 UL 
                   
                 UL F c   
                 UL BW 
                 UL 
                 DL F c   
                 DL BW 
                 MSD 
               
               
                 CA bands 
                 band 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB# 
                 (MHz) 
                 (MHz) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 CA_n41A-n71A 
                 n41 
                 IMD4 
                 2614 
                 5 
                 25 
                 2614 
                 5 
                 18.2 
               
               
                   
                 n71 
                 |3*f n71  − f n41 | 
                 665 
                 5 
                 25 
                 619 
                 5 
                 N/A 
               
               
                 CA_n2A-n77A 
                 n2  
                 IMD2 
                 1855 
                 5 
                 25 
                 1935 
                 5 
                 32.6 
               
               
                   
                 n77 
                 |f n2  − f n77 | 
                 3790 
                 10 
                 50 
                 3790 
                 10 
                 N/A 
               
               
                   
                 n2  
                 IMD4 
                 1885 
                 5 
                 25 
                 1965 
                 5 
                 17.5 
               
               
                   
                 n77 
                 |3*f n2  − f n77 | 
                 3690 
                 10 
                 50 
                 3690 
                 10 
                 N/A 
               
               
                 CA_n5A-n77A 
                 n5  
                 IMD4 
                 844 
                 5 
                 25 
                 889 
                 5 
                 17.7 
               
               
                   
                 n77 
                 |3*f n5  − f n77 | 
                 3421 
                 10 
                 50 
                 3421 
                 10 
                 N/A 
               
               
                 CA_n66A-n77A 
                 n66 
                 IMD2 
                 1730 
                 5 
                 25 
                 2130 
                 5 
                 34.6 
               
               
                   
                 n77 
                 |f n66  − f n77 | 
                 3860 
                 10 
                 50 
                 3860 
                 10 
                 N/A 
               
               
                   
                 n66 
                 IMD5 
                 1730 
                 5 
                 25 
                 2130 
                 5 
                 10.8 
               
               
                   
                 n77 
                 |3*f n66  − 2*f n77 | 
                 3660 
                 10 
                 50 
                 3660 
                 10 
                 N/A 
               
               
                 CA_n71A-n77A 
                 n71 
                 IMD5 
                 681.5 
                 5 
                 25 
                 635.5 
                 5 
                 12.2 
               
               
                   
                 n77 
                 |4*f n71  − f n77 | 
                 3361.5 
                 10 
                 50 
                 3582.5 
                 10 
                 N/A 
               
               
                   
               
            
           
         
       
     
     In Table 34, Fc means a center frequency. For example, UL Fc may mean the center frequency of the uplink operating band or the center frequency of the CC in the uplink operating band. 
     Table 34 shows an example of MSD test configuration and results derived based on IMD problems. Table 34 shows MSD values applicable to various PC 2  NR inter-band CA band combinations. MSD values in Table 34 may be considered to specify the MSD requirements. 
     For reference, ±α tolerance may be applied to the MSD values shown in the Table 34. α may be 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, . . . 2.7. 
     For an example, for PC 2  NR inter-band CA The reception performance of the UE can be tested by applying the MSD values in Table 34 to the reference sensitivity of the downlink operating band of the various CA band combinations. In other words, the MSD values in Table 34 may be applied to the reference sensitivity of the downlink operating band of the various CA band combinations and may be used when the reception performance of the UE is tested. The transceiver (or receiver) of the UE that passed the test satisfies the minimum requirements based on the reference sensitivity to which the MSD values in Table 34 apply. 
     Based on simulation results explained in First Example of the Disclosure of the Present Specification, MSD levels are proposed as the following: 
     For cross-band isolation issue of PC 2  NR inter-band CA UE, the MSD values in Table 30 are proposed; and 
     For IMD problem by dual uplink transmission, the MSD values in Table 34 are proposed. 
     Hereinafter,  FIG. 14  illustrates an example of an operation performed by the UE. 
     The following drawings are prepared to explain a specific example of the present specification. Since the names of specific devices or names of specific signals/messages/fields described in the drawings are provided by way of example, technical features of the present specification are not limited to specific names used in the following drawings. 
       FIG. 14  is a flow chart showing an example of a procedure of a UE according to the present disclosure. 
     Referring to  FIG. 14 , steps S 1410  to S 1430  are shown. Operations described below may be performed by the UE (for example, the first device  100  of  FIG. 2 ). 
     For reference, step S 1410  may not always be performed when the UE performs communication. For example, step S 1410  may be performed only when the reception performance of the UE is tested. 
     In the UE performing the operation of  FIG. 14 , DC or CA may be configured. 
     For example, the PC 2  NR inter-band CA based on the combination of two NR operating bands may be configured. For example, the combination of two NR operating bands may be the various EN-DC band combinations in Table 30 based on that the UE is power class  2  UE. For example, the combination of two NR operating bands may be the various EN-DC band combinations in Table 34 based on that the UE is power class  2  UE. 
     For example, the EN-DC based on the combination of one E-UTRA operating band and one NR operating band may be configured. For example, the combination of one E-UTRA operating band and one NR operating band may be the various EN-DC band combinations in Table 21 based on that the UE is power class  2  UE. For example, the combination of one E-UTRA operating band and one NR operating band may be the various EN-DC band combinations in Table 25 based on that the UE is power class  2  UE. 
     In step S 1410 , the UE may preconfigure the MSD value. For example, the UE may preset the MSD values in Table 21, Table 25, Table 30 and/or Table 34. 
     In step S 1420 , the UE may transmit the uplink signal. 
     In step S 1430 , the UE may receive the downlink signal. 
     The UE may receive the downlink signal based on the reference sensitivity of the downlink band, to which the MSD value (for example, MSD values shown in examples of Table 21, Table 25, Table 30 and/or Table 34) is applied. 
     For example, the UE may be configured to use CA based on  2  NR operating bands. The two NR operating bands may be two bands among NR operating bands n 2 , n 5 , n 25 , n 41 , n 66 , n 71  or n 77 . 
     For example, the UE may transmit uplink signal via one NR operating band among the two NR operating bands. The UE may receive downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. For example, MSD value due to cross band isolation, which is shown in examples of Table 30, may be applied to a reference sensitivity for receiving the downlink signal based on a combination of NR operating band used for downlink band and NR operating band used for uplink band. For example, as shown in examples of Table 30, the MSD value is pre-configured according to a combination of the two NR operating bands used for the CA, and channel bandwidth configured for the downlink signal, based on that the UE is power class  2  UE. 
     For example, the MSD value may be 6.5 dB, based on that the NR operating band, used for uplink band, is n 77 , the other NR operating band, used for downlink band, is n 41 , and the channel bandwidth configured for the downlink signal is one of 10 MHz, 15 MHz, or 20 MHz. For example, based on that the one NR operating band is n 41 , the other NR operating band is n 77 : wherein the MSD value may be 10.5 dB, based on that the channel bandwidth configured for the downlink signal is one of 10 MHz, 15 MHz, or 20 MHz; wherein the MSD value may be 9.5 dB, based on that the channel bandwidth configured for the downlink signal is 25 MHz; wherein the MSD value may be 8.6 dB, based on that the channel bandwidth configured for the downlink signal is 30 MHz; wherein the MSD value may be 8.3 dB, based on that the channel bandwidth configured for the downlink signal is 40 MHz; wherein the MSD value may be 7.2 dB, based on that the channel bandwidth configured for the downlink signal is 50 MHz; wherein the MSD value may be 6.3 dB, based on that the channel bandwidth configured for the downlink signal is one of 60 MHz; wherein the MSD value may be 6.0 dB, based on that the channel bandwidth configured for the downlink signal is 70 MHz; wherein the MSD value may be 5.7 dB, based on that the channel bandwidth configured for the downlink signal is 80 MHz; and wherein the MSD value may be 5.6 dB, based on that the channel bandwidth configured for the downlink signal is one of 90 MHz or 100 MHz. 
     For MSD due to dual uplink operation, the UE may transmit the uplink signal via two NR operating bands. The MSD value due to dual uplink operation, as shown in examples of Table 34, is applied to the reference sensitivity for receiving the downlink signal based on a combination of the two NR operating bands, based on that the UE is the power class  2  UE. The MSD value may be 32.1 dB for 2nd Intermodulation Distortion (IMD), based on that the two NR operating bands are n 2  and n 77 , and the other NR operating band is n 2 . The MSD value may be 19.1 dB for 4th IMD, based on that the two NR operating bands are n 2  and n 77 , and the other NR operating band is n 2 . The MSD value may be 18.6 dB, based on that the two NR operating bands are n 5  and n 77 , and the other NR operating band is n 5 . The MSD value may be 16.3 dB, based on that the two NR operating bands are n 41  and n 77 , and the other NR operating band is n 41 . The MSD value may be 34.33 dB for 2nd IMD, based on that the two NR operating bands are n 66  and n 77 , and the other NR operating band is n 66 . The MSD value may be 11.27 dB for 5th IMD, based on that the two NR operating bands are n 66  and n 77 , and the other NR operating band is n 66 . The MSD value may be 11.4 dB, based on that the two NR operating bands are n 71  and n 77 , and the other NR operating band is n 71 . 
     For example, the UE, which is power class  2  UE, may be configured to use EN-DC based on one NR operating band and one E-UTRA operating band. The NR operating bands may be one among NR operating bands n 41 , n 77 , or n 78 . The one E-UTRA operating band is one among E-UTRA operating bands  2 ,  5 ,  7 ,  13 , or  66 . 
     For example, the UE may transmit uplink signal via the one NR operating band. The UE may receive downlink signal via the one E-UTRA operating band. For example, MSD value due to cross band isolation, which is shown in examples of Table  21 , may be applied to a reference sensitivity for receiving the downlink signal based on a combination of E-UTRA operating band used for downlink band and NR operating band used for uplink band. For example, as shown in examples of Table 21, the MSD value may be pre-configured according to a combination of the one NR operating band, the one E-UTRA operating band, and channel bandwidth configured for the downlink signal, based on that the UE is power class  2  UE. For example, wherein the MSD value may be 6.4 dB, based on that the one NR operating band is n 78 , the one E-UTRA operating band is  7 , and the channel bandwidth configured for the downlink signal is one of 5 MHz, 10 MHz, 15 MHz, or 20 MHz. wherein the MSD value may be 1.6 dB, based on that the one NR operating band is n 41 , the one E-UTRA operating band is  2 , and the channel bandwidth configured for the downlink signal is one of 5 MHz, 10 MHz, 15 MHz, or 20 MHz. The MSD value may be 5.4 dB, based on that the one NR operating band is n 41 , the one E-UTRA operating band is  66 , and the channel bandwidth configured for the downlink signal is one of 5 MHz, 10 MHz, 15 MHz, or 20 MHz. 
     For MSD due to dual uplink operation, the UE may transmit the uplink signal the one NR operating band and the one E-UTRA operating band. The MSD value due to dual uplink operation, as shown in examples of Table 25, is applied to the reference sensitivity for receiving the downlink signal based on a combination of the one NR operating band and the one E-UTRA operating band, based on that the UE is the power class  2  UE. For example, wherein the MSD value may be 32.1 dB for 2nd Intermodulation Distortion (IMD), based on that the one NR operating band is n 77  and the one E-UTRA operating band is  2 . The MSD value may be 19.1 dB for 4th IMD, based on that the one NR operating band is n 77  and the one E-UTRA operating band is  2 . The MSD value may be 18.6 dB, based on that the one NR operating band is n 77  and the one E-UTRA operating band is  5 . The MSD value may be 15.37 dB, based on that the one NR operating band is n 77  and the one E-UTRA operating band is  13 . The MSD value may be 34.33 dB for 2nd IMD, based on that the one NR operating band is n 77  and the one E-UTRA operating band is  66 . The MSD value may be 11.27 dB for 5th IMD, based on that the one NR operating band is n 77  and the one E-UTRA operating band is  66 . 
     For reference, the order in which steps S 1720  and S 1730  are performed may be different from that shown in  FIG. 14 . For example, step S 1730  may be performed first and then step S 1720  may be performed. Alternatively, step S 1720  and step S 1730  may be performed simultaneously. Alternatively, the time when step S 1720  and step S 1730  may be may overlap partially. 
     Hereinafter, an apparatus(for example, UE) in a wireless communication system, according to some embodiments of the present disclosure, will be described. 
     For example, the apparatus may include at least one processor, at least one transceiver, and at least one memory. 
     For example, the at least one processor may be configured to be coupled operably with the at least one memory and the at least one transceiver. The apparatus and/or the at least one transceiver may be configured to use Carrier Aggregation (CA) based on two New Radio (NR) operating bands. The two NR operating bands are two bands among NR operating bands n 2 , n 5 , n 25 , n 41 , n 66 , n 71  or n 77   
     For example, the processor may be configured to transmit, via the at least one transceiver an uplink signal via one NR operating band among the two NR operating bands; and receiving, via the at least one transceiver, a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands, wherein Maximum Sensitivity Degradation (MSD) value due to cross band isolation is applied to a reference sensitivity for receiving the downlink signal based on the other NR operating band, and wherein the MSD value is pre-configured according to a combination of the one NR operating band, the other NR operating band, and channel bandwidth configured for the downlink signal, based on that the UE is power class  2  UE. 
     Hereinafter, a processor for in a wireless communication system, according to some embodiments of the present disclosure, will be described. 
     For example, the processor may be configured to use CA based on two NR operating bands. The two NR operating bands may be two bands among NR operating bands n 2 , n 5 , n 25 , n 41 , n 66 , n 71  or n 77 . the processor may be configured to generate an uplink signal via one NR operating band among the two NR operating bands; and identify a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands, wherein MSD value due to cross band isolation may be applied to a reference sensitivity for receiving the downlink signal based on the other NR operating band, and wherein the MSD value may be pre-configured according to a combination of the one NR operating band, the other NR operating band, and channel bandwidth configured for the downlink signal, based on that a device including the at least one processor is power class  2  UE. 
     Hereinafter, a non-transitory computer-readable medium has stored thereon a plurality of instructions in a wireless communication system, according to some embodiments of the present disclosure, will be described. 
     According to some embodiment of the present disclosure, the technical features of the present disclosure could be embodied directly in hardware, in a software executed by a processor, or in a combination of the two. For example, a method performed by a wireless device in a wireless communication may be implemented in hardware, software, firmware, or any combination thereof. For example, a software may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other storage medium. 
     Some example of storage medium is coupled to the processor such that the processor can read information from the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. For other example, the processor and the storage medium may reside as discrete components. 
     The computer-readable medium may include a tangible and non-transitory computer-readable storage medium. 
     For example, non-transitory computer-readable media may include random access memory (RAM) such as synchronous dynamic random access memory (SDRAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), FLASH memory, magnetic or optical data storage media, or any other medium that can be used to store instructions or data structures. Non-transitory computer-readable media may also include combinations of the above. 
     In addition, the method described herein may be realized at least in part by a computer-readable communication medium that carries or communicates code in the form of instructions or data structures and that can be accessed, read, and/or executed by a computer. 
     According to some embodiment of the present disclosure, a non-transitory computer-readable medium has stored thereon a plurality of instructions. The stored a plurality of instructions may be executed by a processor of a UE. 
     For example, the stored a plurality of instructions may cause the UE to generate an uplink signal via one New Radio (NR) operating band among two NR operating bands. Wherein the at least one processor is configured to use Carrier Aggregation (CA) based on the two NR operating bands. Wherein the two NR operating bands are two bands among NR operating bands n 2 , n 5 , n 25 , n 41 , n 66 , n 71  or n 77 . The stored a plurality of instructions may cause the UE to identify a downlink signal on other NR operating band, different from the one NR operating band, among the two NR operating bands. MSD value due to cross band isolation may be applied to a reference sensitivity for receiving the downlink signal based on the other NR operating band. The MSD value may be pre-configured according to a combination of the one NR operating band, the other NR operating band, and channel bandwidth configured for the downlink signal, based on that a device including the at least one processor is power class  2  UE. 
     According to some embodiment of the present disclosure, the impact of self interference, such as harmonics and/or Intermodulation Distortion (IMD), on some E-UTRA NR Dual Connectivity (EN-DC) band combinations and on some inter-band Carrier Aggregation (CA) band combinations for power class  2  are clearly analyzed. Also MSD values applied to reference sensitivity for receiving the downlink signal are clearly analyzed. Thus, the power class  2  UE configured with the EN-DC and/or inter-band CA may perform communication efficiently and/or precisely. 
     According to some embodiment of the present disclosure, for power class  2  UE, the impact of cross band isolations, which means interference on Rx(reception) band due to small frequency interval between Tx(Transmission) carrier/frequency in band X and the Rx carrier/frequency in band Y, on some EN-DC band combinations and on some inter-band CA band combinations are clearly analyzed. Also MSD values applied to reference sensitivity for receiving the downlink signal are clearly analyzed. Thus, the power class  2  UE configured with the EN-DC and/or inter-band CA may perform communication efficiently and/or precisely. 
     In the above exemplary systems, although the methods have been described on the basis of the flowcharts using a series of the steps or blocks, the present disclosure is not limited to the sequence of the steps, and some of the steps may be performed at different sequences from the remaining steps or may be performed simultaneously with the remaining steps. Furthermore, those skilled in the art will understand that the steps shown in the flowcharts are not exclusive and may include other steps or one or more steps of the flowcharts may be deleted without affecting the scope of the present disclosure. 
     Advantageous effects which can be obtained through specific embodiments of the present disclosure are not limited to the advantageous effects listed above. For example, there may be a variety of technical effects that a person having ordinary skill in the related art can understand and/or derive from the present disclosure. Accordingly, the specific effects of the present disclosure are not limited to those explicitly described herein, but may include various effects that may be understood or derived from the technical features of the present disclosure. 
     Claims in the present disclosure can be combined in a various way. For instance, technical features in method claims of the present disclosure can be combined to be implemented or performed in an apparatus, and technical features in apparatus claims can be combined to be implemented or performed in a method. Further, technical features in method claim(s) and apparatus claim(s) can be combined to be implemented or performed in an apparatus. Further, technical features in method claim(s) and apparatus claim(s) can be combined to be implemented or performed in a method. Other implementations are within the scope of the following claims.