Patent Publication Number: US-2022231821-A1

Title: Method for transmitting and receiving signal by terminal supporting dual-connectivity between e-utra and nr and terminal performing the method

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. application Ser. No. 16/320,181, filed on Jan. 24, 2019, which is a National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2018/010063, filed on Aug. 30, 2018, which claims the benefit of U.S. Provisional Applications No. 62/557,014 filed on Sep. 11, 2017, No. 62/566,345 filed on Sep. 30, 2017, No. 62/630,267 filed on Feb. 14, 2018, and Korean Patent Application No. 10-2018-0054665 filed on May 14, 2018, the contents of which are all hereby incorporated by reference herein in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to mobile communication 
     Related Art 
     With the success of long term evolution (LTE)/LTE-A (LTE-Advanced) for the 4th generation mobile communication, more interest is rising to the next generation, i.e., 5th generation (also known as 5G) mobile communication and extensive research and development are being carried out accordingly 
     The 5 th -generation mobile telecommunications defined by the International Telecommunication Union (ITU) refers to providing a data transfer rate of up to 20 Gbps and a perceptible transfer rate of at least 100 Mbps anywhere. The 5 th -generation mobile telecommunications, whose official name is ‘IMT-2020’, is aimed to be commercialized worldwide in 2020. 
     ITU proposes three usage scenarios, for example, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra- reliable and low latency communications (URLLC). 
     First, URLLC relates to a usage scenario which requires high reliability and low latency. For example, services such as autonomous driving, factory automation, augmented reality require high reliability and low latency (e.g., a delay time of 1 ms or less). Currently, latency of 4G (LTE) is statistically 21 to 43 ms (best 10%) and 33 to 75ms (median). This is not enough to support a service requiring latency of 1 ms or less. 
     Next, the eMBB usage scenario refers to a usage scenario requiring mobile ultra-wideband. This ultra-wideband high-speed service is unlikely to be accommodated by core networks designed for existing LTE/LTE-A. Thus, in the so-called 5th-generation mobile communication, core networks are urgently required to be re-designed. 
     Meanwhile, in the 5th generation mobile communication, a scheme (EN-DC) of dually connecting LTE and NR is underway to ensure communication stability. However, in a state in which a downlink carrier using LTE and a downlink carrier using NR are aggregated, transmission of an uplink signal may cause a harmonic component and an intermodulation distortion (IMD) component to impact on a downlink band of a terminal itself. 
     SUMMARY OF THE INVENTION 
     In an aspect, provided is a method for transmitting and receiving a signal by a terminal supporting dual-connectivity between evolved universal terrestrial radio access (E-UTRA) and new radio (NR). The method may comprise transmitting, when the terminal is configured to aggregate at least two carriers, an uplink signal using uplink of the at least two carriers; and receiving a downlink signal using downlink of the at least two carriers, wherein when the at least two carriers include one of E-UTRA operating bands 1, 3, 19, and 21 and at least one of NR operating bands n78 and n79, an uplink center frequency of a first carrier among the at least two carriers is a first value and a downlink center frequency of the first carrier is a second value, a predetermined maximum sensitivity degradation (MSD) is applied to a reference sensitivity used for reception of the downlink signal. 
     When the at least two carriers are the E-UTRA operating band 21 and the NR operating band n79, the first carrier corresponds to the E-UTRA operating band 21, the first value corresponds to 1457.5 MHz, and the second value corresponds to 1505.5 MHz, the MSD value is 18.4 dB. 
     When the at least two carriers are the E-UTRA operating band 1 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n79, the first value corresponds to 4870 MHz, and the second value corresponds to 4870 MHz, the MSD value is 15.9 dB. 
     When the at least two carriers are the E-UTRA operating band 1 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n78, the first value corresponds to 3490 MHz, and the second value corresponds to 3490 MHz, the MSD value is 4.6 dB. 
     When the at least two carriers are the E-UTRA operating band 3 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n79, the first value corresponds to 4910 MHz, and the second value corresponds to 4910 MHz, the MSD value is 16.3 dB. 
     When the at least two carriers are the E-UTRA operating band 3 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n78, the first value corresponds to 3710 MHz, and the second value corresponds to 3710 MHz, the MSD value is 4.2 dB. 
     When the at least two carriers are the E-UTRA operating band 19 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n79, the first value corresponds to 4515 MHz, and the second value corresponds to 4515 MHz, the MSD value is 29.3 dB. 
     When the at least two carriers are the E-UTRA operating band 19 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n78, the first value corresponds to 3715 MHz, and the second value corresponds to 3715 MHz, the MSD value is 28.8 dB. 
     When the at least two carriers are the E-UTRA operating band 21 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n79, the first value corresponds to 4873 MHz, and the second value corresponds to 4873 MHz, the MSD value is 30.1 dB. 
     When the at least two carriers are the E-UTRA operating band 19 and the NR operating bands n78 and n79, the first carrier corresponds to the NR operating band n78, the first value corresponds to 3487 MHz, and the second value corresponds to 3487 MHz, the MSD value is 29.8 dB. 
     In another aspect, provided is also a terminal supporting dual-connectivity between evolved universal terrestrial radio access (E-UTRA) and new radio (NR). The terminal may comprises a transceiver transmitting an uplink signal and receiving a downlink signal; and a processor controlling the transceiver, wherein when the terminal is configured to aggregate at least two carriers, the processor transmits the uplink signal using uplink of the at least two carriers; and receives the downlink signal using downlink of the at least two carriers, and when the at least two carriers include one of E-UTRA operating bands 1, 3, 19, and 21 and at least one of NR operating bands n78 and n79, an uplink center frequency of a first carrier among the at least two carriers is a first value and a downlink center frequency of the first carrier is a second value, a predetermined maximum sensitivity degradation (MSD) is applied to a reference sensitivity used for reception of the downlink signal. 
     According to a disclosure of the present invention, the above problem of the related art is solved. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a wireless communication system. 
         FIG. 2  illustrates the architecture of a radio frame according to frequency division duplex (FDD) of 3rd generation partnership project (3GPP) long term evolution (LTE). 
         FIG. 3  illustrates an example resource grid for one uplink or downlink slot in 3GPP LTE. 
         FIG. 4  illustrates the architecture of a downlink subframe. 
         FIG. 5  illustrates the architecture of an uplink subframe in 3GPP LTE. 
         FIGS. 6A and 6B  are conceptual views illustrating intra-band carrier aggregation (CA). 
         FIGS. 7A and 7B  are conceptual views illustrating inter-band carrier aggregation (CA). 
         FIG. 8  illustrates a situation where a harmonic component and intermodulation distortion (IMD) are introduced into downlink band when uplink signal is transmitted through two uplink carriers. 
         FIG. 9  shows a scenario in which a 5G NR band and an LTE E-UTRA band of 6 GHz or lower may coexist in a 5G NR non-standalone UE. 
         FIG. 10  is a block diagram illustrating a wireless communication system in which a disclosure of the present specification is implemented. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, based on 3rd Generation Partnership Project (3GPP) long term evolution (LTE) or 3GPP LTE-advanced (LTE-A), the present invention will be applied. This is just an example, and the present invention may be applied to various wireless communication systems. Hereinafter, LTE includes LTE and/or LTE-A. 
     The technical terms used herein are used to merely describe specific embodiments and should not be construed as limiting the present invention. Further, the technical terms used herein should be, unless defined otherwise, interpreted as having meanings generally understood by those skilled in the art but not too broadly or too narrowly. Further, the technical terms used herein, which are determined not to exactly represent the spirit of the invention, should be replaced by or understood by such technical terms as being able to be exactly understood by those skilled in the art. Further, the general terms used herein should be interpreted in the context as defined in the dictionary, but not in an excessively narrowed manner. 
     The expression of the singular number in the specification includes the meaning of the plural number unless the meaning of the singular number is definitely different from that of the plural number in the context. In the following description, the term ‘include’ or ‘have’ may represent the existence of a feature, a number, a step, an operation, a component, a part or the combination thereof described in the specification, and may not exclude the existence or addition of another feature, another number, another step, another operation, another component, another part or the combination thereof. 
     The terms ‘first’ and ‘second’ are used for the purpose of explanation about various components, and the components are not limited to the terms ‘first’ and ‘second’. The terms ‘first’ and ‘second’ are only used to distinguish one component from another component. For example, a first component may be named as a second component without deviating from the scope of the present invention. 
     It will be understood that when an element or layer is referred to as being “connected to” or “coupled to” another element or layer, it may be directly connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly connected to” or “directly coupled to” another element or layer, there are no intervening elements or layers present. 
     Hereinafter, exemplary embodiments of the present invention will be described in greater detail with reference to the accompanying drawings. In describing the present invention, for ease of understanding, the same reference numerals are used to denote the same components throughout the drawings, and repetitive description on the same components will be omitted. Detailed description on well-known arts which are determined to make the gist of the invention unclear will be omitted. The accompanying drawings are provided to merely make the spirit of the invention readily understood, but not should be intended to be limiting of the invention. It should be understood that the spirit of the invention may be expanded to its modifications, replacements or equivalents in addition to what is illustrated in the drawings. 
     As used herein, ‘base station’ generally refers to a fixed station that communicates with a wireless device and may be denoted by other terms such as eNB (evolved-NodeB), BTS (base transceiver system), or access point. 
     As used herein, user equipment (UE) may be stationary or mobile, and may be denoted by other terms such as device, wireless device, terminal, MS(mobile station), UT(user terminal), SS(subscriber station), MT(mobile terminal) and etc. 
       FIG. 1  illustrates a wireless communication system. 
     Referring to  FIG. 1 , the wireless communication system includes at least one base station (BS)  20 . Respective BSs  20  provide a communication service to particular geographical areas  20   a,    20   b,  and  20   c  (which are generally called cells). 
     The UE generally belongs to one cell and the cell to which the terminal belong is referred to as a serving cell. A base station that provides the communication service to the serving cell is referred to as a serving BS. Since the wireless communication system is a cellular system, another cell that neighbors to the serving cell is present. Another cell which neighbors to the serving cell is referred to a neighbor cell. A base station that provides the communication service to the neighbor cell is referred to as a neighbor BS. The serving cell and the neighbor cell are relatively decided based on the UE. 
     Hereinafter, a downlink means communication from the base station  20  to the terminal  10  and an uplink means communication from the terminal  10  to the base station  20 . In the downlink, a transmitter may be a part of the base station  20  and a receiver may be a part of the terminal  10 . In the uplink, the transmitter may be a part of the terminal  10  and the receiver may be a part of the base station  20 . 
     Hereinafter, the LTE system will be described in detail. 
       FIG. 2  shows a downlink radio frame structure according to FDD of 3rd generation partnership project (3GPP) long term evolution (LTE). 
     The radio frame of  FIG. 2  may be found in the section 5 of 3GPP TS 36.211 V10.4.0 (2011-12) “Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 10)”. 
     Referring to  FIG. 2 , the radio frame consists of 10 subframes. One subframe consists of two slots. Slots included in the radio frame are numbered with slot numbers 0 to 19. A time required to transmit one subframe is defined as a transmission time interval (TTI). The TTI may be a scheduling unit for data transmission. For example, one radio frame may have a length of 10 milliseconds (ms), one subframe may have a length of 1 ms, and one slot may have a length of 0.5 ms. 
     The structure of the radio frame is for exemplary purposes only, and thus the number of subframes included in the radio frame or the number of slots included in the subframe may change variously. 
     Meanwhile, one slot may include a plurality of OFDM symbols. The number of OFDM symbols included in one slot may vary depending on a cyclic prefix (CP). 
       FIG. 3  illustrates an example resource grid for one uplink or downlink slot in 3GPP LTE. 
     Referring to  FIG. 3 , the uplink slot includes a plurality of OFDM (orthogonal frequency division multiplexing) symbols in the time domain and NRB resource blocks (RBs) in the frequency domain. For example, in the LTE system, the number of resource blocks (RBs), i.e., NRB, may be one from 6 to 110. 
     Resource block (RB) is a resource allocation unit and includes a plurality of sub-carriers in one slot. For example, if one slot includes seven OFDM symbols in the time domain and the resource block includes 12 sub-carriers in the frequency domain, one resource block may include 7×12 resource elements (REs). 
     Meanwhile, the number of sub-carriers in one OFDM symbol may be one of 128, 256, 512, 1024, 1536, and 2048. 
     In 3GPP LTE, the resource grid for one uplink slot illustrated in  FIG. 4  may also apply to the resource grid for the downlink slot. 
       FIG. 4  illustrates the architecture of a downlink sub-frame. 
     In  FIG. 4 , assuming the normal CP, one slot includes seven OFDM symbols, by way of example. 
     The DL (downlink) sub-frame is split into a control region and a data region in the time domain. The control region includes up to first three OFDM symbols in the first slot of the sub-frame. However, the number of OFDM symbols included in the control region may be changed. A PDCCH (physical downlink control channel) and other control channels are allocated to the control region, and a PDSCH is allocated to the data region. 
     The physical channels in 3GPP LTE may be classified into data channels such as PDSCH (physical downlink shared channel) and PUSCH (physical uplink shared channel) and control channels such as PDCCH (physical downlink control channel), PCFICH (physical control format indicator channel), PHICH (physical hybrid-ARQ indicator channel) and PUCCH (physical uplink control channel). 
     The PCFICH transmitted in the first OFDM symbol of the sub-frame carries CIF (control format indicator) regarding the number (i.e., size of the control region) of OFDM symbols used for transmission of control channels in the sub-frame. The wireless device first receives the CIF on the PCFICH and then monitors the PDCCH. 
     Unlike the PDCCH, the PCFICH is transmitted through a fixed PCFICH resource in the sub-frame without using blind decoding. The PHICH carries an ACK (positive-acknowledgement)/NACK (negative-acknowledgement) signal for a UL HARQ (hybrid automatic repeat request). The ACK/NACK signal for UL (uplink) data on the PUSCH transmitted by the wireless device is sent on the PHICH. 
     The PBCH (physical broadcast channel) is transmitted in the first four OFDM symbols in the second slot of the first sub-frame of the radio frame. The PBCH carries system information necessary for the wireless device to communicate with the base station, and the system information transmitted through the PBCH is denoted MIB (master information block). In comparison, system information transmitted on the PDSCH indicated by the PDCCH is denoted SIB (system information block). 
     The PDCCH may carry activation of VoIP (voice over internet protocol) and a set of transmission power control commands for individual UEs in some UE group, resource allocation of an upper layer control message such as a random access response transmitted on the PDSCH, system information on DL-SCH, paging information on PCH, resource allocation information of UL-SCH (uplink shared channel), and resource allocation and transmission format of DL-SCH (downlink-shared channel). A plurality of PDCCHs may be sent in the control region, and the terminal may monitor the plurality of PDCCHs. The PDCCH is transmitted on one CCE (control channel element) or aggregation of some consecutive CCEs. The CCE is a logical allocation unit used for providing a coding rate per radio channel&#39;s state to the PDCCH. The CCE corresponds to a plurality of resource element groups. Depending on the relationship between the number of CCEs and coding rates provided by the CCEs, the format of the PDCCH and the possible number of PDCCHs are determined. 
     The control information transmitted through the PDCCH is denoted downlink control information (DCI). The DCI may include resource allocation of PDSCH (this is also referred to as DL (downlink) grant), resource allocation of PUSCH (this is also referred to as UL (uplink) grant), a set of transmission power control commands for individual UEs in some UE group, and/or activation of VoIP (Voice over Internet Protocol). 
     The base station determines a PDCCH format according to the DCI to be sent to the terminal and adds a CRC (cyclic redundancy check) to control information. The CRC is masked with a unique identifier (RNTI; radio network temporary identifier) depending on the owner or purpose of the PDCCH. In case the PDCCH is for a specific terminal, the terminal&#39;s unique identifier, such as C-RNTI (cell-RNTI), may be masked to the CRC. Or, if the PDCCH is for a paging message, a paging indicator, for example, P-RNTI (paging-RNTI) may be masked to the CRC. If the PDCCH is for a system information block (SIB), a system information identifier, SI-RNTI (system information-RNTI), may be masked to the CRC. In order to indicate a random access response that is a response to the terminal&#39;s transmission of a random access preamble, an RA-RNTI (random access-RNTI) may be masked to the CRC. 
     In 3GPP LTE, blind decoding is used for detecting a PDCCH. The blind decoding is a scheme of identifying whether a PDCCH is its own control channel by demasking a desired identifier to the CRC (cyclic redundancy check) of a received PDCCH (this is referred to as candidate PDCCH) and checking a CRC error. The base station determines a PDCCH format according to the DCI to be sent to the wireless device, then adds a CRC to the DCI, and masks a unique identifier (this is referred to as RNTI (radio network temporary identifier) to the CRC depending on the owner or purpose of the PDCCH. 
     The uplink channels include a PUSCH, a PUCCH, an SRS (Sounding Reference Signal), and a PRACH (physical random access channel). 
       FIG. 5  illustrates the architecture of an uplink sub-frame in 3GPP LTE. 
     Referring to  FIG. 5 , the uplink sub-frame may be separated into a control region and a data region in the frequency domain. The control region is assigned a PUCCH (physical uplink control channel) for transmission of uplink control information. The data region is assigned a PUSCH (physical uplink shared channel) for transmission of data (in some cases, control information may also be transmitted). 
     The PUCCH for one terminal is assigned in resource block (RB) pair in the sub-frame. The resource blocks in the resource block pair take up different sub-carriers in each of the first and second slots. The frequency occupied by the resource blocks in the resource block pair assigned to the PUCCH is varied with respect to a slot boundary. This is referred to as the RB pair assigned to the PUCCH having been frequency-hopped at the slot boundary. 
     The terminal may obtain a frequency diversity gain by transmitting uplink control information through different sub-carriers over time. m is a location index that indicates a logical frequency domain location of a resource block pair assigned to the PUCCH in the sub-frame. 
     The uplink control information transmitted on the PUCCH includes an HARQ (hybrid automatic repeat request), an ACK (acknowledgement)/NACK (non-acknowledgement), a CQI (channel quality indicator) indicating a downlink channel state, and an SR (scheduling request) that is an uplink radio resource allocation request. 
     The PUSCH is mapped with a UL-SCH that is a transport channel. The uplink data transmitted on the PUSCH may be a transport block that is a data block for the UL-SCH transmitted for the TTI. The transport block may be user information. Or, the uplink data may be multiplexed data. The multiplexed data may be data obtained by multiplexing the transport block for the UL-SCH and control information. For example, the control information multiplexed with the data may include a CQI, a PMI (precoding matrix indicator), an HARQ, and an RI (rank indicator). Or, the uplink data may consist only of control information. 
     Carrier Aggregation: CA 
     Hereinafter, a carrier aggregation system will be described. 
     The carrier aggregation (CA) system means aggregating multiple component carriers (CCs). By the carrier aggregation, the existing meaning of the cell is changed. 
     According to the carrier aggregation, the cell may mean a combination of a downlink component carrier and an uplink component carrier or a single downlink component carrier. 
     Further, in the carrier aggregation, the cell may be divided into a primary cell, secondary cell, and a serving cell. The primary cell means a cell that operates at a primary frequency and means a cell in which the UE performs an initial connection establishment procedure or a connection reestablishment procedure with the base station or a cell indicated by the primary cell during a handover procedure. The secondary cell means a cell that operates at a secondary frequency and once an RRC connection is established, the secondary cell is configured and is used to provide an additional radio resource. 
     The carrier aggregation system may be divided into a continuous carrier aggregation system in which aggregated carriers are contiguous and a non-contiguous carrier aggregation system in which the aggregated carriers are separated from each other. Hereinafter, when the contiguous and non-contiguous carrier systems are just called the carrier aggregation system, it should be construed that the carrier aggregation system includes both a case in which the component carriers are contiguous and a case in which the component carriers are non-contiguous. The number of component carriers aggregated between the downlink and the uplink may be differently set. A case in which the number of downlink CCs and the number of uplink CCs are the same as each other is referred to as symmetric aggregation and a case in which the number of downlink CCs and the number of uplink CCs are different from each other is referred to as asymmetric aggregation. 
     Meanwhile, the carrier aggregation (CA) technologies, as described above, may be generally separated into an inter-band CA technology and an intra-band CA technology. The inter-band CA is a method that aggregates and uses CCs that are present in different bands from each other, and the intra-band CA is a method that aggregates and uses CCs in the same frequency band. Further, CA technologies are more specifically split into intra-band contiguous CA, intra-band non-contiguous CA, and inter-band non-contiguous CA. 
       FIGS. 6A and 6B  are concept views illustrating intra-band carrier aggregation (CA). 
       FIG. 6A  illustrates intra-band contiguous CA, and  FIG. 6B  illustrates 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 that is being discussed in LTE-advanced may be split into the intra-band contiguous CA illustrated in  FIG. 6A  and the intra-band non-contiguous CA illustrated in  FIG. 6B . 
       FIGS. 7A and 7B  are concept views illustrating inter-band carrier aggregation. 
       FIG. 7A  illustrates a combination of a lower band and a higher band for inter-band CA, and  FIG. 7B  illustrates a combination of similar frequency bands for inter-band CA. 
     In other words, 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 illustrated in  FIG. 7A  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 illustrated in  FIG. 7B . 
     
       
         
           
               
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 Operating 
                 Uplink (UL) operating band 
                 Downlink (DL) operating band 
                 Duplex 
               
               
                 Band 
                 F UL _low-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-894 MHz 
                 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 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 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 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 Operating 
                 Uplink (UL) operating band 
                 Downlink (DL) operating band 
                 Duplex 
               
               
                 Band 
                 F UL _low-F UL _high 
                 F DL _low-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 
               
               
                 n20 
                 832 MHz-862 MHz 
                 791 MHz-821 MHz 
                 FDD 
               
               
                 n28 
                 703 MHz-748 MHz 
                 758 MHz-803 MHz 
                 FDD 
               
               
                 n38 
                 2570 MHz-2620 MHz 
                 2570 MHz-2620 MHz 
                 TDD 
               
               
                 n41 
                 2496 MHz-2690 MHz 
                 2496 MHz-2690 MHz 
                 TDD 
               
               
                 n50 
                 1432 MHz-1517 MHz 
                 1432 MHz -1517 MHz  
                 TDD 
               
               
                 n51 
                 1427 MHz-1432 MHz 
                 1427 MHz -1432 MHz  
                 TDD 
               
               
                 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 
               
               
                   
               
            
           
         
       
     
     When operating bands are fixed as illustrated in Table 1 and Table 2, a frequency allocation organization of each country may assign a specific frequency to a service provider according to a situation of each country. 
     Meanwhile, in the current 5G NR technology, a scheme (EN-DC) of dually connecting LTE and NR is underway to ensure communication stability. However, in a state in which a downlink carrier using LTE and a downlink carrier using NR are aggregated, transmission of an uplink signal may cause a harmonic component and an intermodulation distortion (IMD) component to impact on a downlink band of the UE itself. 
     Specifically, the UE must be set to satisfy a reference sensitivity power level (REFSENS), which is minimum average power for each antenna port of the UE. 
     However, in case that the harmonic component and/or the IMD component occurs, the REFSENS for the downlink signal may not be satisfied. That is, the REFSENS must be set such that throughput thereof is at least 95% of maximum throughput of a reference measurement channel, but the occurrence of the harmonic component and/or the IMD component may cause the throughput to fall below 95%. 
     Thus, it is determined whether the harmonic component and/or the IMD component of the EN-DC terminal (or EN-DC user equipment (UE)) has occurred, and when the harmonic component and the IMD component of the EN-DC terminal has occurred, a maximum sensitivity degradation (MSD) value for a corresponding frequency band may be defined to allow relaxation for the REFSENS in a reception band of the EN-DC terminal based on a transmission signal of the EN-DC terminal. Here, the MSD is maximum allowable degradation of REFSENS, and in a certain frequency band, the REFSENS may be relaxed by the defined amount of MSD. 
     Accordingly, in the present disclosure, an MSD value for eliminating (or reducing) the harmonic component and IMD is proposed for a terminal set to aggregate two or more downlink carriers and two uplink carriers. 
     Disclosure of Present Specification 
     Hereinafter, in case that the UE transmits an uplink signal through two uplink carriers in an aggregation state of a plurality of downlink carriers and two uplink carriers, whether an interference is leaked to a downlink band of the UE is analyzed and a solution thereto is subsequently proposed. 
       FIG. 8  illustrates a situation where an uplink signal transmitted through an uplink band flows into an uplink band of the UE. 
     Referring to  FIG. 8 , in a state in which three downlink bands are set by carrier aggregation and two uplink bands are set, when the UE transmits an uplink signal through two uplink bands, the harmonic component and the IMD component may be introduced into a downlink band of the UE. In this situation, an MSD value capable of correcting the REFSENS is proposed to prevent reception sensitivity of a downlink signal from deteriorating due to the harmonic component and/or the IMD component. In addition, although the UE appropriately solves the problem, a degradation of a reception sensitivity level in the downlink band of the UE may not be completely prevented due to cross isolation and coupling loss due to the PCB, a scheme of alleviating the requirements that an existing UE must meet. 
     I . First Disclosure 
       FIG. 9  shows a scenario in which a 5G NR band and an LTE E-UTRA band of 6 GHz or lower may coexist in a 5G NR non-standalone UE. 
     Referring to  FIG. 9 , a shared antenna RF architecture in which the NR NSA UE supports dual connection between an NR band of 6 GHz or lower and an LTE E-UTRA band may be considered. Table 3 shows E-UTRA bands which may be aggregated with NR bands in the NR NSA UE. 
     
       
         
           
               
               
             
               
                   
                 TABLE 3 
               
             
            
               
                   
                   
               
               
                   
                 LTE band 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                 1 
                 2 
                 3 
                 5 
                 7 
                 8 
                 19 
                 20 
                 21 
                 25 
                 26 
                 28 
                 39 
                 41 
                 66 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                 NR Freq. 
                 3.3-4.2 
                 GHz 
                 Y 
                   
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                   
                 Y 
                 Y 
                 Y 
                 Y 
                   
               
               
                 Range 
                 4.4-4.99 
                 GHz 
                 Y 
                   
                 Y 
                 Y 
                   
                 Y 
                 Y 
                   
                 Y 
                   
                 Y 
                 Y 
                 Y 
                 Y 
               
               
                   
                 24.25-29.5 
                 GHz 
                 Y 
                   
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
                   
                 Y 
                 Y 
                 Y 
                 Y 
                 Y 
               
               
                   
                 31.8-33.4 
                 GHz 
                   
                   
                 Y 
                   
                 Y 
                   
                   
                 Y 
                   
                   
                   
                 Y 
               
               
                   
                 37-40 
                 GHZ 
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
                 Y 
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
               
            
               
                   
                 Band 7 
                   
                   
                 Y 
                   
                   
                 Y 
                   
                 Y 
                   
                   
                   
                   
                   
                   
                   
               
               
                   
                 Band 28 
                   
                   
                 Y 
                   
                 Y 
                   
                   
                 Y 
               
               
                   
                 Band 41 
                 Y 
                 Y 
                 Y 
                 Y 
                   
                   
                   
                   
                   
                 Y 
                 Y 
                   
                   
                 Y 
               
               
                   
                   
               
            
           
         
       
     
     Referring to  FIG. 9  and Table 3, LTE E-UTRA operating bands 1 and 41 may be aggregated with an NR operating band n77 (3.3 GHz-4.2 GHz). 
     As illustrated in  FIG. 9 , a scenario in which LTE E-UTRA operating bands 1 and 41 coexist with an NR operating band n77 may include a case 1) where an LTE frequency band and an NR frequency band are single-connected (single connectivity), a case 2) where the LTE frequency band and the NR frequency band are dual-connected (dual connectivity), and a case 3) where the LTE frequency band and the NR frequency band are dual-connected in the same frequency band 
     1) Case where LTE frequency band and NR frequency band are single-connected 
     When LTE and NR are single-connected, LTE may operate as a primary cell. Here, as illustrated in  FIG. 9 , the LTE operating frequency band B1 may transmit a signal and an Rx of the LTE operating frequency band B1 operates as frequency division duplex (FDD), and thus, signal transmission and reception may be simultaneously performed. NR operates as a secondary cell, and in the NR operating frequency band n77, a signal may be received simultaneously with transmission and reception in the LTE operating frequency band B1. 
     2) Case where LTE frequency band and the NR frequency band are dual-connected (EN-DC) 
     When the LTE frequency band and the NR frequency band are dual-connected, impact on a reception band of the UE may be different depending on whether the LTE frequency band operates as FDD or time division duplexing (TDD). 
     For example, when the LTE operating frequency band B1 and the NR operating frequency band n77 are dual-connected, data reception may be performed only in the LTE operating frequency band B1. Since the NR operating frequency band n77 operates as TDD, no signal reception occurs. Therefore, in this case, the harmonic/IMD impact may be analyzed only for a reception band of the LTE operating frequency band B1 in which signal reception may occur. 
     Meanwhile, unlike the case of  FIG. 9 , when the LTE operating frequency band B1 and the NR operating frequency band n7 are dual-connected, since both the LTE operating frequency band B1 and the NR operating frequency band n7 operate as FDD, harmonic/IMD impact must be analyzed in both the LTE operating frequency band B1 and the NR operating frequency band n7. 
     Also, when the LTE operating frequency band B41 and the NR operating frequency band n77 are dual-connected, both the LTE operating frequency band B41 and the NR operating frequency band n77 operate as TDD, and thus, signals are not simultaneously transmitted and received at the same ban so there is no need to analyze the harmonic/IMD impact. However, when both bands operate asynchronously, self-interference may need to be analyzed. 
     3) Case where LTE frequency band and NR frequency band are dual-connected at the same frequency band 
     For example, the LTE operating frequency band B41 and the NR operating frequency band n41 may be dual-connected or the LTE operating frequency band B71 and the NR operating frequency band n71 may be dual-connected. In this case, MPR/A-MPR must be analyzed according to RF architecture. 
     As illustrated in  FIG. 9 , when the LTE operating frequency band B41 and the NR operating frequency band n41 are dual-connected, the frequency bands B41 and n41 operate as TDD, and thus, the harmonic/IMD problem for the reception band of the UE does not arise . 
     However, if the LTE operating frequency band B71 and the NR operating frequency band n71 are dual-connected, since the frequency bands B71 and n71 operate as FDD, intra-band contiguous CA occurs in the band, and thus, the harmonic/IMD problem of the reception band of the UE regarding the frequency bands B71 and n71 must be analyzed. 
     Also, Table 4 shows the harmonic and IMD problem when the NR NSA terminal supports single/dual-connection between the NR operating band n77 and the LTE E-UTRA operating bands, and Table 5 shows the harmonic and IMD problem when the NR NSA terminal supports single/dual-connection between the NR operating band n79 and the LTE E-UTRA operating bands. Referring to Table 4 and Table 5, it can be seen that the harmonic problem is a major factor in the reduction of sensitivity. In addition, in the case of dual connectivity (DC), the reception frequency band of the UE may be impacted by the IMD. Therefore, a maximum sensitivity degradation (MSD) must be considered not only for the harmonic problem but also for the IMD problem, and a scheme of guaranteeing a zero MSD in the existing E-UTRA band by optimizing resource block (RB) assignment in the NR band or by controlling the RB size or position by gNB scheduling must be considered. 
     
       
         
           
               
               
               
             
               
                 TABLE 4 
               
             
            
               
                   
               
               
                   
                 NR band (MHz) 
                   
               
               
                 E-UTRA band 
                 3300-4200 
                   
               
            
           
           
               
               
               
               
               
            
               
                 E-UTRA 
                 UL range 
                 Harmonic 
                 Harmonic 
                   
               
               
                 band 
                 (MHz) 
                 order 
                 range (MHz) 
                 Harmonic/IMD problem 
               
               
                   
               
               
                 B1 
                 1920-1980 
                 2x 
                 3840-3960 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 2 nd , 4 th  &amp; 5 th  IMD into B1 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th  IMD into NR 
               
               
                 B3 
                 1710-1785 
                 2x 
                 3420-3570 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 2 nd , 4 th  &amp; 5 th  IMD into B3 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th  IMD into NR 
               
               
                 B5 
                 824-849 
                 4x 
                 3296-3396 
                 1) Harmonics into NR 
               
               
                   
                   
                 5x 
                 4120-4245 
                 2) 4 th  &amp;5 th  IMD into B5 
               
               
                   
                   
                   
                   
                 3) 2 nd  &amp; 5 th  IMD into NR 
               
               
                 B7 
                 2500-2570 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) 4 th  IMD into B7 
               
               
                   
                   
                   
                   
                 3) 3 rd  &amp; 4 th  IMD into NR 
               
               
                 B8 
                 880-915 
                 4x 
                 3520-3660 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 4 th  IMD into B8 
               
               
                   
                   
                   
                   
                 3) 2 nd  &amp; 5 th  IMD into NR 
               
               
                 B19 
                 830-845 
                 4x 
                 3320-3380 
                 1) Harmonics into NR 
               
               
                   
                   
                 5x 
                 4150-4225 
                 2) B19     4 th &amp;5 th  IMD 
               
               
                   
                   
                   
                   
                 3) NR     2 nd  &amp; 5 th  IMD 
               
               
                 B20 
                 832-862 
                 4x 
                 3328-3448 
                 1) Harmonics into NR 
               
               
                   
                   
                 5x 
                 4160-4310 
                 2) 4 th  &amp; 5 th  IMD into B19 
               
               
                   
                   
                   
                   
                 3) 2 nd  &amp; 5 th  IMD into NR 
               
               
                 B21 
                 1447.9-1462.9 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) No impact of IMD on B21 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th  IMD into NR 
               
               
                 B25 
                 1850-1915 
                 2x 
                 3700-3830 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 2 nd , 4 th  &amp; 5 th  IMD into B25 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th  IMD into NR 
               
               
                 B26 
                 814-849 
                 4x 
                 3256-3396 
                 1) Harmonics into NR 
               
               
                   
                   
                 5x 
                 4070-4245 
                 2) 4 th &amp;5 th  IMD into B26 
               
               
                   
                   
                   
                   
                 3) 2 nd  &amp; 5 th  IMD into NR 
               
               
                 B28 
                 703-748 
                 5x 
                 3515-3740 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 5 th  IMD into B28 
               
               
                   
                   
                   
                   
                 3) 2 nd  IMD into NR 
               
               
                 B38 
                 2570-2620 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) 4 th  IMD into B7 
               
               
                   
                   
                   
                   
                 3) 3 rd  &amp; 4 th  IMD into NR 
               
               
                   
                   
                   
                   
                 TDD-TDD sync. → No impact 
               
               
                 B39 
                 1880-1920 
                 2x 
                 3760-3840 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 2 nd , 4 th  &amp; 5 th  IMD into B39 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th  IMD into NR 
               
               
                   
                   
                   
                   
                 TDD-TDD sync. → No impact 
               
               
                 B41 
                 2496-2690 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) 4 th  IMD into B41 
               
               
                   
                   
                   
                   
                 3) 3 rd  &amp; 4 th  IMD into NR 
               
               
                   
                   
                   
                   
                 TDD-TDD sync. → No impact 
               
               
                 B42 
                 3400-3600 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) 3 rd , 5 th  IMD into B42 
               
               
                   
                   
                   
                   
                 3) 3 rd , 5 th  IMD into NR 
               
               
                   
                   
                   
                   
                 TDD-TDD sync. → No impact 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
             
               
                 TABLE 5 
               
             
            
               
                   
               
               
                   
                 NR band (MHz) 
                   
               
               
                 E-UTRA band 
                 4400-5000 
                   
               
            
           
           
               
               
               
               
               
            
               
                 E-UTRA 
                 UL range 
                 harmonic 
                 harmonic 
                   
               
               
                 band 
                 (MHz) 
                 order 
                 range (MHz) 
                 harmonic/IMD problem 
               
               
                   
               
               
                 B1 
                 1920-1980 
                 — 
                 N/A 
                 1) No harmonics into NR 
               
               
                   
                   
                   
                   
                 2) No impact on B1 
               
               
                   
                   
                   
                   
                 3) Impact of 4 th  IMD on NR 
               
               
                 B3 
                 1710-1785 
                 — 
                 N/A 
                 1) No harmonics into NR 
               
               
                   
                   
                   
                   
                 2) 5 th  IMD into B3 
               
               
                   
                   
                   
                   
                 3) 5 th  IMD into NR 
               
               
                 B8 
                 880-915 
                 5x 
                 4400-4575 
                 1) Harmonic into NR 
               
               
                   
                   
                   
                   
                 2) 5 th  IMD into B8 
               
               
                   
                   
                   
                   
                 3) No harmonics into NR 
               
               
                 B19 
                 830-845 
                 6x 
                 4980-5070 
                 1) Harmonics into NR 
               
               
                   
                   
                   
                   
                 2) No IMD problem at B19 
               
               
                   
                   
                   
                   
                 3) No IMD problem at NR 
               
               
                 B21 
                 1447.9-1462.9 
                 — 
                 N/A 
                 1) No harmonics 
               
               
                   
                   
                   
                   
                 2) 3 rd  IMD into B21 
               
               
                   
                   
                   
                   
                 3) 5 th  IMD into NR 
               
               
                 B26 
                 814-849 
                 6x 
                 4884-5094 
                 1) Harmonic into NR 
               
               
                   
                   
                   
                   
                 2) No IMD problem at B26 
               
               
                   
                   
                   
                   
                 3) No IMD problem at NR 
               
               
                 B28 
                 703-748 
                 6x 
                 4218-4488 
                 1) Harmonics into NR 
               
               
                   
                   
                 7x 
                 4921-5236 
                 2) No IMD problem at B28 
               
               
                   
                   
                   
                   
                 3) No IMD problem at NR 
               
               
                 B39 
                 1880-1920 
                 — 
                 N/A 
                 1) No harmonics into NR 
               
               
                   
                   
                   
                   
                 2) No IMD problem at B39 
               
               
                   
                   
                   
                   
                 3) 4 th  IMD into NR → TDD- 
               
               
                   
                   
                   
                   
                 TDD sync. → No impact 
               
               
                 B41 
                 2496-2690 
                 2x 
                 4992-5380 
                 1) Harmonic into NR 
               
               
                   
                   
                   
                   
                 2) 2 nd , 4 th  &amp; 5 th   
               
               
                   
                   
                   
                   
                 IMD into B41 
               
               
                   
                   
                   
                   
                 3) 4 th  &amp; 5 th   
               
               
                   
                   
                   
                   
                 IMD into NR 
               
               
                   
                   
                   
                   
                 TDD-TDD sync. → No impact 
               
               
                 B42 
                 3400-3600 
                 — 
                 N/A 
                 1) No harmonics into NR 
               
               
                   
                   
                   
                   
                 2) No IMD problem at B42 
               
               
                   
                   
                   
                   
                 3) No IMD problem NR 
               
               
                   
               
            
           
         
       
     
     According to Tables 4 and 5, it can be seen that the harmonic/IMD problem does not occur when considering the synchronized TDD-TDD network between the existing TDD LTE band and NR band. 
     Thus, the following phenomenon may be discovered on the basis of Table 4 and Table 5.
         Observation 1: In a TDD-TDD synchronization network, the harmonic/IMD problems does not occur   Observation 2: In an FDD-TDD NSA terminal, the harmonic problem may have a fatal impact on NR reception frequency of the terminal.       

     The harmonic problem may impact on the NR band regarding FDD-TDD DC NSA terminals. Thus, a harmonic trap filter must be considered for a specific NSA terminal. The harmonic trap filter may significantly reduce an interference level regarding the NR band. Also, an MSD level regarding the NR band of the NSA terminal may be defined regardless of harmonic order. 
     A third point is the IMD problem regarding a NSA DC terminal. This may be divided into two problems. 
     A first problem is that the IMD may impact on a reception LTE (E-UTRA) band of the terminal.
         Observation 3: Regarding the FDD-TDD NSA terminal, the IMD may impact on an LTE reception frequency of the terminal       

     Since mobility control of the NSA terminal is based on LTE connection, desensitization of the LTE band must be prevented through dual-transmission that guarantees an MSD level of 0 dB in the existing LTE band. Thus, additional maximum power reduction (A-MPR) requirements in the NR band must be defined to protect the existing LTE band or allow resource block (RB) shift or a limited RB size in the NR band. 
     Also, the second problem may impact on a reception NR band of the terminal.
         Observation 4: In the FDD-TDD NSA terminal, the IMD may fall on the NR reception frequency of the terminal.       

     Here, if a required MSD level is not higher than a specific level, the MSD level for the NR band may be defined. Then, dual-connectivity (DC) for a combination of LTE band and NR band may be allowed. However, if the required MSD level is higher than the specific level, the NSA DC of the combination of the LTE band and the NR band may not be allowed 
     In an LTE dual-uplink carrier aggregation (CA) band combination, an average 
     MSD level regarding an IMD4 (4 th  IMD) generated from 11 sample band combinations of the Table 7.3.1A-Of of TS 36.101 in which MSD levels according to dual-uplink CA band combinations is 7.56 dB. Also, an average MSD level regarding IMD5 (5 th  IMD) is 4.68. dB. However, a statistical MSD level regarding IMD3 (3 rd  IMD) is 13.73 dB.
         Observation 5: In the dual uplink LTE CA, an MSD level according to IMD4 and       

     IMD5 may be approximately 10 dB or less. 
     Based on the MSD results of the 2DL/2UL CA band combination of TS 36.101, a reference MSD level may be determined as 10 dB. This may mean that if the MSD level is greater than 10 dB, NSA DC in the combination of the candidate LTE band and the NR band is not allowed. If not, an NSA DC operation in the combination of the LTE band and the NR NSA band is allowed and an MSD level may be defined as a REFSENS exceptional condition. 
     According to the above observations, in the present disclosure, a 5G NSA terminal of 6 GHz or lower is proposed as follows.
         Proposal 1: For the harmonic problem, a harmonic trap filter may be considered to reduce an interference signal level and the MSD level may be defined.   Proposal 2: When the IMD falls on the existing LTE band, a 0 dB MSD must be guaranteed using the A-MPR scheme or next generation NodeB (gNB) scheduling in the NR band.   Proposal 3: When the IMD falls on the NR band, an MSD level may be defined as exceptional requirements for reference sensitivity (REFSENS).       

       1  Proposal 4: Based on observation 4 and observation 5 above, the MSD level may be determined to be 10 dB as a reference point regarding whether NSA dual-connection operation is allowed. 
     II. Second Disclosure 
     To support dual-connection between the NR band and the LTE E-UTRA band, it is necessary to evaluate a coexistence analysis for an NSA operation within some NR deployment scenarios. Thus, in the second disclosure, an MSD value for supporting a DC operation although self-interference impacts on a reception frequency band of the terminal is proposed. 
     Regarding NR, a shared antenna RF architecture for NSA terminals of 6 GHz or lower may be considered as an LTE system. Thus, a shared antenna RF architecture for a general NSA DC terminal may be considered to derive the MSD level. However, some DC band combinations for the NR DC terminal must consider a separate RF architecture which means that operating frequency ranges between the NR band and the LTE band overlap like DC_42A-n77A, DC_42A-n78A, and DC_41_n41A. 
     1. Harmonic Problem in NR Band 
     Based on a coexistence analysis result for the NSA DC terminal, the MSD level for the following five cases may be determined. When the MSD level is analyzed, a harmonic trap filter may be used.
         2 nd  harmonic: DC_1A-n77A   4 th  harmonic: DC_5A-n78A, DC_8A-n78A, DC_20A-n78A   5 th  harmonic: DC_5A-n77A, DC_8A-n79A, DC_19A-n77A, DC_20A-n77A   6 th  harmonic: DC_19A-n79A, DC_28A-n79A   7 th  harmonic: DC_28A-n79A       

     MSD Level Regarding 2 nd  Harmonic 
     Table 6 below shows RF component isolation parameters of the DC_1A-n77A terminal for deriving the MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 6 
               
             
            
               
                   
                   
               
               
                   
                 Option1: W/HTF 
                 Option2: W/O HTF 
               
            
           
           
               
               
               
               
               
            
               
                   
                 Primary 
                 Diversity 
                 Primary 
                 Diversity 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 H2 
                   
                 H2 
                   
                 H2 
                   
                 H2 
               
               
                 Parameter 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 B1 Tx in PA output 
                 28 
                   
                 28 
                   
                 28 
                   
                 28 
                   
               
               
                 B1 PA H2 
                 35 
                 −7 
                 35 
                 −7 
                 35 
                 −7 
                 35 
                 −7 
               
               
                 attenuation 
               
               
                 B1 duplexer H2 
                 30 
                 −37 
                 30 
                 −37 
                 30 
                 −37 
                 30 
                 −37 
               
               
                 attenuation 
               
               
                 Harmonic filter 
                 25 
                 −62 
                 25 
                 −62 
                 0 
                 −37 
                 0 
                 −37 
               
               
                 Mid switch H2 
                 −65 
                 −60.2 
                 −65 
                 −60.2 
                 −65 
                 −37 
                 −65 
                 −37 
               
               
                 Diplexer attenuation 
                 25 
                 −85.2 
                 25 
                 −85.2 
                 25 
                 −62 
                 25 
                 −62 
               
               
                 Antenna isolation 
                 0 
                 −85.2 
                 10 
                 −95.2 
                 0 
                 −62 
                 10 
                 −72 
               
               
                 HB switch 
                 0.7 
                 −85.9 
                 0.7 
                 −95.9 
                 0.7 
                 −62.7 
                 0.7 
                 −72.7 
               
               
                 attenuation 
               
               
                 HB switch H2 
                 −130 
                 −85.9 
                 −110 
                 −95.8 
                 −130 
                 −62.7 
                 −110 
                 −72.7 
               
               
                 n77 Rx filter atten. 
                 1.5 
                 −87.4 
                 1.5 
                 −97.3 
                 1.5 
                 −64.2 
                 1.5 
                 −74.2 
               
               
                 n77 Rx filter H2 
                 −110 
                 −87.4 
                 −110 
                 −97.0 
                 −110 
                 −64.2 
                 −110 
                 −74.2 
               
               
                 B1 PA to NR B77 
                 60 
                 −67.0 
                 60 
                 −67.0 
                 60 
                 −67.0 
                 60 
                 −67.0 
               
               
                 LNA isolation 
               
               
                 Composite 
                   
                 −67.0 
                   
                 −67.0 
                   
                 −62.4 
                   
                 −66.2 
               
               
                   
               
            
           
         
       
     
     The major factor for determining the MSD level for the second harmonic is an isolation level from the LTE band B1 power amplifier (PA) to the NR band n77 low-noise amplifier (LNA). It may be limited to 3.3 GHz to 4.2 GHz by the B1 PA attenuation level. 
     According to Table 6, the MSD level for DC_1A-n77A may be expressed as illustrated in Table 7 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 7 
               
             
            
               
                   
               
               
                   
                 W/HTF 
                 W/O HTF 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 H2 level 
                 MSD 
                 H2 level 
                 MSD 
               
               
                   
                 Thermal 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Main Path 
                 −101 
                 −67.0 
                 34.8 
                 −62.4 
                 39.4 
               
               
                 Diversity Path 
                 −101 
                 −67.0 
                 34.8 
                 −66.2 
                 35.5 
               
               
                 After MRC 
                   
                   
                 31.8 
                   
                 34.0 
               
               
                   
               
            
           
         
       
     
     MSD Level for 4 th  Harmonic 
     Table 8 shows RF component isolation parameters of the DC_5A-n78A terminal for deriving the MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 8 
               
             
            
               
                   
                   
               
               
                   
                 Option1: W/HTF 
                 Option2: W/O HTF 
               
            
           
           
               
               
               
               
               
            
               
                   
                 Primary 
                 Diversity 
                 Primary 
                 Diversity 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 H4 
                   
                 H4 
                   
                 H4 
                   
                 H4 
               
               
                 Parameter 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 B5 Tx in PA output 
                 28 
                   
                 28 
                   
                 28 
                   
                 28 
                   
               
               
                 B5 PA H4 
                 48 
                 −20 
                 48 
                 −20 
                 48 
                 −20 
                 48 
                 −20 
               
               
                 attenuation 
               
               
                 B5 duplexer H4 
                 30 
                 −50 
                 30 
                 −50 
                 30 
                 −50 
                 30 
                 −50 
               
               
                 attenuation 
               
               
                 Harmonic filter 
                 25 
                 −75 
                 25 
                 −75 
                 0 
                 −50 
                 0 
                 −50 
               
               
                 Low switch H4 
                 −65 
                 −64.6 
                 −65 
                 −64.6 
                 −65 
                 −49.9 
                 −65 
                 −49.9 
               
               
                 Diplexer attenuation 
                 27 
                 −91.6 
                 27 
                 −91.6 
                 27 
                 −76.9 
                 27 
                 −76.9 
               
               
                 Antenna isolation 
                 0 
                 −91.6 
                 10 
                 −101.6 
                 0 
                 −76.9 
                 10 
                 −86.9 
               
               
                 HB switch 
                 0.7 
                 −92.3 
                 0.7 
                 −102.3 
                 0.7 
                 −77.6 
                 0.7 
                 −87.6 
               
               
                 attenuation 
               
               
                 HB switch H4 
                 −130 
                 −92.3 
                 −110 
                 −101.6 
                 −130 
                 −77.6 
                 −110 
                 −87.5 
               
               
                 n78 Rx filter atten. 
                 1.5 
                 −93.8 
                 1.5 
                 −103.1 
                 1.5 
                 −79.1 
                 1.5 
                 −89.0 
               
               
                 n78 Rx filter H4 
                 −110 
                 −93.7 
                 −110 
                 −102.3 
                 −110 
                 −79.1 
                 −110 
                 −89.0 
               
               
                 B5 PA to NR B78 
                 60 
                 −80.0 
                 60 
                 −80.0 
                 60 
                 −80.0 
                 60 
                 −80.0 
               
               
                 LNA isolation 
               
               
                 Composite 
                   
                 −79.8 
                   
                 −80.0 
                   
                 −76.5 
                   
                 −79.5 
               
               
                   
               
            
           
         
       
     
     According to Table 8, the MSD level for DC_5A-n78A may be expressed as illustrated in Table 9 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 9 
               
             
            
               
                   
               
               
                   
                 W/HTF 
                 W/O HTF 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 H4 level 
                 MSD 
                 H4 level 
                 MSD 
               
               
                   
                 Thermal 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Main Path 
                 −101 
                 −79.8 
                 22.0 
                 −76.5 
                 25.3 
               
               
                 Diversity Path 
                 −101 
                 −80.0 
                 21.8 
                 −79.4 
                 22.3 
               
               
                 After MRC 
                   
                   
                 18.9 
                   
                 20.6 
               
               
                   
               
            
           
         
       
     
     MSD Level for 5 th  Harmonic 
     Table 10 shows RF component isolation parameters for the DC_19A-n77A terminal to derive the MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 10 
               
             
            
               
                   
                   
               
               
                   
                 Option1: W/HTF 
                 Option2: W/O HTF 
               
            
           
           
               
               
               
               
               
            
               
                   
                 Primary 
                 Diversity 
                 Primary 
                 Diversity 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 H5 
                   
                 H5 
                   
                 H5 
                   
                 H5 
               
               
                 Parameter 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 B19 Tx in PA output 
                 28 
                   
                 28 
                   
                 28 
                   
                 28 
                   
               
               
                 B19 PA H5 
                 53 
                 −25 
                 53 
                 −25 
                 53 
                 −25 
                 53 
                 −25 
               
               
                 attenuation 
               
               
                 B19 duplexer H5 
                 30 
                 −55 
                 30 
                 −55 
                 30 
                 −55 
                 30 
                 −55 
               
               
                 attenuation 
               
               
                 Harmonic filter 
                 25 
                 −80 
                 25 
                 −80 
                 0 
                 −55 
                 0 
                 −55 
               
               
                 Low switch H5 
                 −65 
                 −64.9 
                 −65 
                 −64.9 
                 −65 
                 −54.6 
                 −65 
                 −54.6 
               
               
                 Diplexer attenuation 
                 27 
                 −91.9 
                 27 
                 −91.9 
                 27 
                 −81.6 
                 27 
                 −81.6 
               
               
                 Antenna isolation 
                 0 
                 −91.9 
                 10 
                 −101.9 
                 0 
                 −81.6 
                 10 
                 −91.6 
               
               
                 HB switch 
                 0.7 
                 −92.6 
                 0.7 
                 −102.6 
                 0.7 
                 −82.3 
                 0.7 
                 −92.3 
               
               
                 attenuation 
               
               
                 HB switch H5 
                 −130 
                 −92.6 
                 −110 
                 −101.8 
                 −130 
                 −82.3 
                 −110 
                 −92.2 
               
               
                 n77 Rx filter atten. 
                 1.5 
                 −94.1 
                 1.5 
                 −103.3 
                 1.5 
                 −83.8 
                 1.5 
                 −93.7 
               
               
                 n77 Rx filter H5 
                 −110 
                 −94.0 
                 −110 
                 −102.5 
                 −110 
                 −83.8 
                 −110 
                 −93.6 
               
               
                 B19 PA to NR B77 
                 60 
                 −85.0 
                 60 
                 −85.0 
                 60 
                 −85.0 
                 60 
                 −85.0 
               
               
                 LNA isolation 
               
               
                 Composite 
                   
                 −84.5 
                   
                 −84.9 
                   
                 −81.3 
                   
                 −84.4 
               
               
                   
               
            
           
         
       
     
     According to Table 10, the MSD level for DC_19A-n77A may be expressed as in Table 11 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 11 
               
             
            
               
                   
               
               
                   
                 W/HTF 
                 W/O HTF 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 H5 level 
                 MSD 
                 H5 level 
                 MSD 
               
               
                   
                 Thermal 
                 (dBm) 
                 (dB ) 
                 (dBm) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Main Path 
                 −101 
                 −84.5 
                 17.4 
                 −81.3 
                 20.5 
               
               
                 Diversity Path 
                 −101 
                 −84.9 
                 16.9 
                 −84.4 
                 17.4 
               
               
                 After MRC 
                   
                   
                 14.1 
                   
                 15.7 
               
               
                   
               
            
           
         
       
     
     MSD Level for 6 th  Harmonic 
     Table 12 shows RF component isolation parameters of the DC_19A-n79A terminal to derive the MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 12 
               
             
            
               
                   
                   
               
               
                   
                 Option1: W/HTF 
                 Option2: W/O HTF 
               
            
           
           
               
               
               
               
               
            
               
                   
                 Primary 
                 Diversity 
                 Primary 
                 Diversity 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 H6 
                   
                 H6 
                   
                 H6 
                   
                 H6 
               
               
                 Parameter 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 B19 Tx in PA output 
                 28 
                   
                 28 
                   
                 28 
                   
                 28 
                   
               
               
                 B19 PA H6 
                 60 
                 −32 
                 60 
                 −32 
                 60 
                 −32 
                 60 
                 −32 
               
               
                 attenuation 
               
               
                 B19 duplexer H6 
                 30 
                 −62 
                 30 
                 −62 
                 30 
                 −62 
                 30 
                 −62 
               
               
                 attenuation 
               
               
                 Harmonic filter 
                 25 
                 −87 
                 25 
                 −87 
                 0 
                 −62 
                 0 
                 −62 
               
               
                 Low switch H6 
                 −70 
                 −69.9 
                 −70 
                 −69.9 
                 −70 
                 −61.4 
                 −70 
                 −61.4 
               
               
                 Diplexer attenuation 
                 27 
                 −96.9 
                 27 
                 −96.9 
                 27 
                 −88.4 
                 27 
                 −88.4 
               
               
                 Antenna isolation 
                 0 
                 −96.9 
                 10 
                 −106.9 
                 0 
                 −88.4 
                 10 
                 −98.4 
               
               
                 HB switch 
                 0.7 
                 −97.6 
                 0.7 
                 −107.6 
                 0.7 
                 −89.1 
                 0.7 
                 −99.1 
               
               
                 attenuation 
               
               
                 HB switch H6 
                 −130 
                 −97.6 
                 −110 
                 −105.6 
                 −130 
                 −89.1 
                 −110 
                 −98.7 
               
               
                 n79 Rx filter atten. 
                 1.5 
                 −99.1 
                 1.5 
                 −107.1 
                 1.5 
                 −90.6 
                 1.5 
                 100.2 
               
               
                 n79 Rx filter H6 
                 −110 
                 −98.8 
                 −110 
                 −105.3 
                 −110 
                 −90.5 
                 −110 
                 −99.8 
               
               
                 B19 PA to NR B79 
                 60 
                 −92.0 
                 60 
                 −92.0 
                 60 
                 −92.0 
                 60 
                 −92.0 
               
               
                 LNA isolation 
               
               
                 Composite 
                   
                 −91.2 
                   
                 −91.8 
                   
                 −88.2 
                   
                 −91.3 
               
               
                   
               
            
           
         
       
     
     According to Table 12, the MSD level for DC_19A-n79A may be expressed as illustrated in Table 13 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 13 
               
             
            
               
                   
               
               
                   
                 W/HTF 
                 W/O HTF 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 H6 level 
                 MSD 
                 H6 level 
                 MSD 
               
               
                   
                 Thermal 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Main Path 
                 −101 
                 −91.2 
                 11.0 
                 −88.2 
                 13.8 
               
               
                 Diversity Path 
                 −101 
                 −91.8 
                 10.4 
                 −91.3 
                 10.8 
               
               
                 After MRC 
                   
                   
                 7.7 
                   
                 9.1 
               
               
                   
               
            
           
         
       
     
     MSD Level for 7 th  Harmonic 
     Table 14 shows RF component isolation parameters of the DC_28A-n79A terminal to derive the MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 14 
               
             
            
               
                   
                   
               
               
                   
                 Option1: W/HTF 
                 Option2: W/O HTF 
               
            
           
           
               
               
               
               
               
            
               
                   
                 Primary 
                 Diversity 
                 Primary 
                 Diversity 
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                   
                   
                 H7 
                   
                 H7 
                   
                 H7 
                   
                 H7 
               
               
                 Parameter 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
                 Value 
                 level 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
            
               
                 B28 Tx in PA output 
                 28 
                   
                 28 
                   
                 28 
                   
                 28 
                   
               
               
                 B28 PA H7 
                 70 
                 −42 
                 70 
                 −42 
                 70 
                 −42 
                 70 
                 −42 
               
               
                 attenuation 
               
               
                 B28 duplexer H7 
                 30 
                 −72 
                 30 
                 −72 
                 30 
                 −72 
                 30 
                 −72 
               
               
                 attenuation 
               
               
                 Harmonic filter 
                 25 
                 −97 
                 25 
                 −97 
                 0 
                 −72 
                 0 
                 −72 
               
               
                 Low switch H7 
                 −80 
                 −79.9 
                 −80 
                 −79.9 
                 −80 
                 −71.4 
                 −80 
                 −71.4 
               
               
                 Diplexer attenuation 
                 27 
                 −106.9 
                 27 
                 −106.9 
                 27 
                 −98.4 
                 27 
                 −98.4 
               
               
                 Antenna isolation 
                 0 
                 −106.9 
                 10 
                 −116.9 
                 0 
                 −98.4 
                 10 
                 −108.4 
               
               
                 HB switch 
                 0.7 
                 −107.6 
                 0.7 
                 −117.6 
                 0.7 
                 −99.1 
                 0.7 
                 −109.1 
               
               
                 attenuation 
               
               
                 HB switch H7 
                 −130 
                 −107.6 
                 −110 
                 −109.3 
                 −130 
                 −99.1 
                 −110 
                 −106.5 
               
               
                 n79 Rx filter atten. 
                 1.5 
                 −109.1 
                 1.5 
                 −110.8 
                 1.5 
                 −100.6 
                 1.5 
                 −108.0 
               
               
                 n79 Rx filter H7 
                 −110 
                 −106.5 
                 −110 
                 −107.4 
                 −110 
                 −100.1 
                 −110 
                 −105.9 
               
               
                 B28 PA to NR B79 
                 60 
                 −102.0 
                 60 
                 −102.0 
                 60 
                 −102.0 
                 60 
                 −102.0 
               
               
                 LNA isolation 
               
               
                 Composite 
                   
                 −100.7 
                   
                 −100.9 
                   
                 −97.9 
                   
                 −100.5 
               
               
                   
               
            
           
         
       
     
     According to Table 14, the MSD level for DC_28A-n79A may be expressed as illustrated in Table 15 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 15 
               
             
            
               
                   
               
               
                   
                 W/HTF 
                 W/O HTF 
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 H6 level 
                 MSD 
                 H6 level 
                 MSD 
               
               
                   
                 Thermal 
                 (dBm) 
                 (dB) 
                 (dBm) 
                 (dB) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                 Main Path 
                 −101 
                 −100.7 
                 3.6 
                 −97.9 
                 5.4 
               
               
                 Diversity Path 
                 −101 
                 −100.9 
                 3.5 
                 −100.5 
                 3.7 
               
               
                 After MRC 
                   
                   
                 0.53 
                   
                 1.5 
               
               
                   
               
            
           
         
       
     
     Based on the above-described harmony analysis results, the present disclosure proposes as follows.
         Proposal 1: For the harmonic problem, an MSD level must be defined for the NR band of the maximum of sixth harmonic to support the NSA DC operation. The 7th harmonic does not seriously impact on NR sensitivity.       

     2. IMD Problem for LTE Band and NR Refarming Band 
     The NR refarming band refers to a reused band, which means a frequency band used for LTE communication and also used for NR communication among frequency bands. For example, referring to Table 1 and Table 2 described above, the NR operating band n1 to the NR operating band n41 may be refarming bands which are also included in the LTE operating band. 
     Based on the coexistence analysis results for the NSA DC terminal, the MSD levels for the following four cases may be determined. When the MSD level is analyzed, a harmonic trap filter may be used.
         2 nd  IMD : DC_1A-n77A, DC_3A-n77A, DC_3A-n78A   3 rd  IMD : DC_21A-n79A   4 th  IMD : DC_1A-n77A, DC_1A-n78A, DC_3A-n77A, DC_3A-n78A, DC_7A-n77A, DC_8A-n77A, DC_19A-n77A, DC_20A-n77A, DC_26A-n77A, DC_3A-n7A   5 th  IMD : DC_3A-n79A, DC_8A-n79A, DC_19A-n77A, DC_2A-n66A       

     Table 16 shows UE RF front-end component parameters for deriving an MSD level at 6 GHz or lower. 
     
       
         
           
               
               
               
             
               
                 TABLE 16 
               
             
            
               
                   
               
               
                   
                 UE ref. Architecture 
                   
               
               
                   
                 Cas-caded Diplexer Architecture 
                   
               
               
                   
                 DC_1A-n77A, DC_3A-n77A, 
                   
               
               
                   
                 DC_3A-n78A, DC_21A-n79A 
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                   
                 IP2 
                 IP3 
                 IP4 
                 IP5 
               
               
                   
                 Component 
                 (dBm) 
                 (dBm) 
                 (dBm) 
                 (dBm) 
               
               
                   
               
            
           
           
               
               
               
               
               
               
            
               
                   
                 Ant. Switch 
                 112 
                 68 
                 55 
                 55 
               
               
                   
                 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 17 shows isolation levels according to RF components. 
     
       
         
           
               
               
               
             
               
                 TABLE 17 
               
               
                   
               
               
                   
                 Value 
                   
               
               
                 Isolation Parameter 
                 (dB) 
                 Comment 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                 Antenna to Antenna 
                 10 
                 Main antenna to diversity antenna 
               
               
                 PA (out) to PA (in) 
                 60 
                 PCB isolation (PA forward mixing) 
               
               
                 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 
               
               
                   
               
            
           
         
       
     
     Here, the isolation level indicates how much strength of a signal is reduced at the corresponding frequency when the signal passes through an element or an antenna. For example, referring to Table 17, when the signal is transmitted from an antenna to an antenna, strength thereof may be reduced by 10 dB and when the signal is received at that frequency, strength thereof may be reduced by 50 dB. 
     Based on Table 16 and Table 17, the present disclosure proposes MSD levels as illustrated in Table 18 to Table 21. 
     Table 18 shows the MSD levels proposed for the second IMD. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 18 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_1A- 
                 1 
                 IMD2 
                 |f B77  − f B1 | 
                 1930 
                 5 
                 25 
                 2120 
                 5 
                 2.2 
                 31.1 
               
               
                 n77A 
                 n77 
                   
                   
                 4050 
                 10 
                 52 
                 4050 
                 10 
                   
                 N/A 
               
               
                 DC_3A- 
                 3 
                 IMD2 
                 |f B77  − f B3 | 
                 1730 
                 5 
                 25 
                 1825 
                 5 
                 2.5 
                 31.3 
               
               
                 n77A 
                 n77 
                   
                   
                 3555 
                 10 
                 52 
                 3555 
                 10 
                   
                 N/A 
               
               
                 DC_3A- 
                 3 
                 IMD2 
                 |f B78  − f B3 | 
                 1730 
                 5 
                 25 
                 1825 
                 5 
                 2.5 
                 31.3 
               
               
                 n78A 
                 n78 
                   
                   
                 3555 
                 10 
                 52 
                 3555 
                 10 
                   
                 N/A 
               
               
                   
               
            
           
         
       
     
     Table 19 shows a proposed MSD level for a third IMD. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 19 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_21A- 
                 21 
                 IMD3 
                 |f B79  − 2*f B21 | 
                 1457.5 
                 5 
                 25 
                 1505.5 
                 5 
                 1.8 
                 18.4 
               
               
                 n79A 
                 n79 
                   
                   
                 4420.5 
                 40 
                 216 
                 4420.5 
                 40 
                   
                 N/A 
               
               
                   
               
            
           
         
       
     
     Table 20 shows a proposed MSD level for a fourth IMD. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 20 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_1A- 
                 1 
                 IMD4 
                 |f B77  − 3*f B1 | 
                 1930 
                 5 
                 25 
                 2120 
                 5 
                 1.5 
                 8.3 
               
               
                 n77A 
                 n77 
                   
                   
                 3670 
                 10 
                 52 
                 3670 
                 10 
                   
                 N/A 
               
               
                 DC_1A- 
                 1 
                 IMD4 
                 |f B78  − 3*f B1 | 
                 1930 
                 5 
                 25 
                 2120 
                 5 
                 1.5 
                 8.3 
               
               
                 n78A 
                 n78 
                   
                   
                 3670 
                 10 
                 52 
                 3670 
                 10 
                   
                 N/A 
               
               
                 DC_3A- 
                 3 
                 IMD4 
                 |f B77  − 3*f B3 | 
                 1770 
                 5 
                 25 
                 1865 
                 5 
                 1.5 
                 8.5 
               
               
                 n77A 
                 n77 
                   
                   
                 3445 
                 10 
                 52 
                 3445 
                 10 
                   
                 N/A 
               
               
                 DC_3A- 
                 3 
                 IMD4 
                 |f B78  − 3*f B3 | 
                 1770 
                 5 
                 25 
                 1865 
                 5 
                 1.5 
                 8.5 
               
               
                 n78A 
                 n78 
                   
                   
                 3445 
                 10 
                 52 
                 3445 
                 10 
                   
                 N/A 
               
               
                 DC_7A- 
                 7 
                 IMD4 
                 |2*f B77  − 2*f B7 |  
                 2560 
                 10 
                 50 
                 2680 
                 10 
                 1.6 
                 9.3 
               
               
                 n77A 
                 n77 
                   
                   
                 3900 
                 10 
                 52 
                 3900 
                 10 
                   
                 N/A 
               
               
                 DC_8A- 
                 8 
                 IMD4 
                 |f B77  − 3*f B3 | 
                 910 
                 5 
                 25 
                 955 
                 5 
                 1.3 
                 8.4 
               
               
                 n77A 
                 n77 
                   
                   
                 3685 
                 10 
                 52 
                 3685 
                 10 
                   
                 N/A 
               
               
                 DC_19A- 
                 19  
                 IMD4 
                     |f B77  − 3*f B19 | 
                 840 
                 5 
                 25 
                 885 
                 5 
                 1.7 
                 8.7 
               
               
                 n77A 
                 n77 
                   
                   
                 3405 
                 10 
                 52 
                 3405 
                 10 
                   
                 N/A 
               
               
                 DC_20A- 
                 20  
                 IMD4 
                     |f B77  − 3*f B19 | 
                 857 
                 5 
                 25 
                 816 
                 5 
                 1.7 
                 9.0 
               
               
                 n77A 
                 n77 
                   
                   
                 3387 
                 10 
                 52 
                 3387 
                 10 
                   
                 N/A 
               
               
                 DC_26A- 
                 26  
                 IMD4 
                     |f B77  − 3*f B26 | 
                 819 
                 5 
                 25 
                 864 
                 5 
                 1.7 
                 9.0 
               
               
                 n77A 
                 n77 
                   
                   
                 3321 
                 10 
                 52 
                 3321 
                 10 
                   
                 N/A 
               
               
                 DC_3A- 
                 3 
                 IMD4 
                     |f B7  − 3*f B3 | 
                 1740 
                 5 
                 25 
                 1835 
                 5 
                 1.5 
                 N/A 
               
               
                 n7A 
                 n7  
                   
                   
                 2550 
                 10 
                 52 
                 2670 
                 10 
                   
                 7.5 
               
               
                   
               
            
           
         
       
     
     Table 21 shows a proposed MSD level for a fifth IMD. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 21 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_3A- 
                 3 
                 IMD5 
                 |f B79  − 4*f B3 | 
                 1712.5 
                 5 
                 25 
                 1807.5 
                 5 
                 0.5 
                 0.0 
               
               
                 n79A 
                 n79 
                   
                   
                 4995 
                 10 
                 52 
                 4995 
                 10 
                   
                 N/A 
               
               
                 DC_8A- 
                 8 
                 IMD5 
                 |f B79  − 4*f B8 | 
                 900 
                 5 
                 25 
                 945 
                 5 
                 1.0 
                 2.7 
               
               
                 n79A 
                 n79 
                   
                   
                 4545 
                 10 
                 52 
                 4545 
                 10 
                   
                 N/A 
               
               
                 DC_19A- 
                 19  
                 IMD5 
                     |f B77  − 4*f B19 | 
                 832.5 
                 5 
                 25 
                 877.5 
                 5 
                 0.5 
                 0.0 
               
               
                 n77A 
                 n77 
                   
                   
                 4195 
                 10 
                 52 
                 4195 
                 10 
                   
                 N/A 
               
               
                 DC_2A- 
                 2 
                 IMD5 
                 |2*f B66  − 3*f B2 |  
                 1860 
                 5 
                 25 
                 1940 
                 5 
                 0.8 
                 N/A 
               
               
                 n66A 
                 n66 
                   
                   
                 1725.5 
                 5 
                 52 
                 2130 
                 5 
                   
                 2.0 
               
               
                   
               
            
           
         
       
     
     Based on the MSD levels for the IMDs, the present disclosure proposes as follows.
         Proposal 2: For the IMD problem, an MSD level must be defined for the NR band of a maximum of the fifth order IMD to support NSA DC operation. In addition, corresponding test setup and MSD level may be considered to designate the NSA terminal DC sensitivity level.       

     III. Third Disclosure 
     In the third disclosure, self-interference that occurs when a 5G NR terminal performing a DC operation (EN-DC) of the LTE band and the NR band transmits a dual-uplink signal is analyzed and a relaxed standard for sensitivity is proposed. 
     Table 22 shows self-interference that may occur in the LTE-NR DC combination of 3DL/2UL. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 22 
               
               
                   
               
               
                   
                   
                   
                   
                 Interference 
                   
               
               
                   
                   
                   
                   
                 due to small 
               
               
                 Downlink 
                 Uplink 
                   
                   
                 frequency 
               
               
                 band setup 
                 DC setup 
                 harmonic 
                 IMD 
                 isolation 
                 MSD 
               
               
                   
               
             
            
               
                 B1 + 
                 DC_1A_n3A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will 
               
               
                 n3 + 
                   
                 harmonic 
                 IMDs 
                   
                 be covered in DC_n3A- 
               
               
                 n78 
                   
                 from n3 
                 into n78 
                   
                 n78A. 
               
               
                   
                   
                 into n78 
                   
                   
                 2 nd  &amp;4 th  IMDs problems 
               
               
                   
                   
                   
                   
                   
                 will be FFS. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was 
               
               
                   
                   
                   
                   
                   
                 covered in Table 7.3.1A- 
               
               
                   
                   
                   
                   
                   
                 0bA in TS36.101 
               
               
                   
                 DC_1A_n78A 
                 — 
                 2 nd   
                 — 
                 2 nd  IMD problems will 
               
               
                   
                   
                   
                 IMD into 
                   
                 be FFS. 
               
               
                   
                   
                   
                 n3 
               
               
                 B1 + 
                 DC_1A_n78A 
                 — 
                 3 rd   
                 — 
                 3 rd  IMD problem will be 
               
               
                 n78 + 
                   
                   
                 IMD into 
                   
                 FFS. If consider 
               
               
                 n79 
                   
                   
                 n79 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_1A_n79A 
                 — 
                 5 th   
                 — 
                 5 th  IMD problem will be 
               
               
                   
                   
                   
                 IMDs into 
                   
                 FFS. If consider 
               
               
                   
                   
                   
                 n78 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B1 + 
                 DC_1A_n77A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n77 + 
                   
                 Harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n77 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_1A_n257A 
                 2 nd   
                 — 
                 — 
                 Harmonic problem 
               
               
                   
                   
                 harmonic from 
                   
                   
                 already discussed and will 
               
               
                   
                   
                 B1 into n77 
                   
                   
                 be solved in DC_1A_n77A 
               
               
                 B1 + 
                 DC_1A_n78A 
                 7 th &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 Harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_1A_n257A 
                 2 nd   
                 — 
                 — 
                 Harmonic problem 
               
               
                   
                   
                 harmonic from 
                   
                   
                 already discussed and will 
               
               
                   
                   
                 B1 into n78 
                   
                   
                 be solved in DC_1 A_n78A 
               
               
                 B1 + 
                 DC_1A_n79A 
                 6 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                 n79 + 
                   
                 Harmonics from 
                   
                   
                 solved in DC_n79A-n257A 
               
               
                 n257 
                   
                 n79 into n257 
                   
                   
                 (6 th  order) 
               
               
                   
                 DC_1A_n257A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 B3 + 
                 DC_3A_n1A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will 
               
               
                 n1 + 
                   
                 harmonic from 
                 IMDs into 
                   
                 be covered in 
               
               
                 n78 
                   
                 3 into n78 
                 n78 
                   
                 DC_3A_n78A. 
               
               
                   
                   
                   
                   
                   
                 2 nd  &amp;4 th  IMDs problems 
               
               
                   
                   
                   
                   
                   
                 same as DC_1A_n3A- 
               
               
                   
                   
                   
                   
                   
                 n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was 
               
               
                   
                   
                   
                   
                   
                 covered in Table 7.3.1A- 
               
               
                   
                   
                   
                   
                   
                 0bA in TS36.101 
               
               
                   
                 DC_3A_n78A 
                 — 
                 5 th   
                 — 
                 5 th  IMD problems will be 
               
               
                   
                   
                   
                 IMD into 
                   
                 FFS. 
               
               
                   
                   
                   
                 n1 
               
               
                 B3 + 
                 DC_3A_n77A 
                 — 
                 3 rd  &amp; 4 th   
                 — 
                 RAN4 agreed the 
               
               
                 n77 + 
                   
                   
                 IMDs into 
                   
                 synchronous TDD 
               
               
                 n79 
                   
                   
                 n79 
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study are not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_3A_n79A 
                 2 nd   
                 5 th   
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                 IMD into 
                   
                 solved in DC_3A_n77A 
               
               
                   
                   
                 B3 into B77 
                 B77 
                   
                 RAN4 agreed the 
               
               
                   
                   
                   
                   
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B3 + 
                 DC_3A_n78A 
                 — 
                 3 rd   
                 — 
                 3 rd  IMD problem will be 
               
               
                 n78 + 
                   
                   
                 IMD into 
                   
                 FFS. If consider 
               
               
                 n79 
                   
                   
                 n79 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_3A_n79A 
                 2 nd   
                 5 th   
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                 IMD into 
                   
                 solved in DC_3A_n78A 
               
               
                   
                   
                 B3 into B78 
                 B78 
                   
                 5 th  IMD problem will be 
               
               
                   
                   
                   
                   
                   
                 FFS. If consider 
               
               
                   
                   
                   
                   
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B3 + 
                 DC_3A_n77A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n77 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n77 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_3A_n257A 
                 2 nd   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                   
                   
                 solved in DC_3A_n77A 
               
               
                   
                   
                 B3 into B77 
               
               
                 B3 + 
                 DC_3A_n78A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_3A_n257A 
                 2 nd   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                   
                   
                 solved in DC_3A_n78A 
               
               
                   
                   
                 B3 into n78 
               
               
                 B3 + 
                 DC_3A_n79A 
                 6 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                 n79 + 
                   
                 harmonic from 
                   
                   
                 solved in DC_n79A-n257A 
               
               
                 n257 
                   
                 n79 into n257 
                   
                   
                 (6 th  order) 
               
               
                   
                 DC_3A_n257A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 B5 + 
                 DC_5A_n78A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_5A_n257A 
                 4 th  harmonic from 
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 B5 into n78 
                   
                   
                 solved in DC_5A_n78A 
               
               
                 B7 + 
                 DC_7A_n78A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_7A_n 257A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 B7 + 
                 DC_7A_n1A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 n1 + 
                 DC_7A_n3A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 n3 
               
               
                 B7 + 
                 DC_7A_n1A 
                 — 
                 4 th  &amp; 5 th   
                 — 
                 4 th  &amp; 5 th  IMDs problem will 
               
               
                 n1 + 
                   
                   
                 IMDs into 
                   
                 be FFS. 
               
               
                 n78 
                   
                   
                 n78 
               
               
                   
                 DC_7A_n78A 
                 — 
                 4 th   
                 — 
                 4 th  IMD problem will be 
               
               
                   
                   
                   
                 IMD into 
                   
                 FFS. 
               
               
                   
                   
                   
                 n1 
               
               
                 B7 + 
                 DC_7A_n3A 
                 2 nd   
                 3 rd   
                 — 
                 Harmonic problem will be 
               
               
                 n3 + 
                   
                 harmonic from 
                 IMD into 
                   
                 solved in DC_n3A-n78A 
               
               
                 n78 
                   
                 n3 into n78 
                 n78 
                   
                 3 rd  IMD problem will be 
               
               
                   
                   
                   
                   
                   
                 FFS. 
               
               
                   
                 DC_7A_n78A 
                 — 
                 3 rd  &amp; 4 th   
                 — 
                 3 rd  &amp; 4 th  IMDs problem will be 
               
               
                   
                   
                   
                 IMDs into 
                   
                 FFS. 
               
               
                   
                   
                   
                 n3 
               
               
                 B19 + 
                 DC_19A_n77A 
                 6 th   
                 2 nd , 3 rd , 
                 — 
                 Harmonic problem will 
               
               
                 n77 + 
                   
                 harmonic from 
                 4 th  &amp; 5 th   
                   
                 be solved in DC_19A_n79A 
               
               
                 n79 
                   
                 B19 into n79 
                 IMDs into 
                   
                 RAN4 agreed the 
               
               
                   
                   
                   
                 n79 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_19A_n79A 
                 4 th  &amp; 5 th   
                 2 nd &amp;3 rd   
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonics from 
                 IMDs into 
                   
                 solved in DC_19A_n77A 
               
               
                   
                   
                 B19 into n77 
                 n77 
                   
                 RAN4 agreed the 
               
               
                   
                   
                   
                   
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B19 + 
                 DC_19A_n78A 
                 6 th   
                 2 nd , 3 rd , 
                 — 
                 Harmonic problem will be 
               
               
                 n78 + 
                   
                 harmonic from 
                 4 th  &amp; 5 th   
                   
                 solved in DC_19A_n79A 
               
               
                 n79 
                   
                 B19 into n79 
                 IMDs into 
                   
                 These IMDs problem are 
               
               
                   
                   
                   
                 n79 
                   
                 FFS. If consider 
               
               
                   
                   
                   
                   
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_19A_n79A 
                 4 th   
                 2 nd &amp;3 rd   
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                 IMDs into 
                   
                 solved in DC_19A_n78A 
               
               
                   
                   
                 B19 into n78 
                 n78 
                   
                 These IMDs problem are 
               
               
                   
                   
                   
                   
                   
                 FFS. If consider 
               
               
                   
                   
                   
                   
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B19 + 
                 DC_19A_n77A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n77 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n77 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_19A_n257A 
                 4 th  &amp; 5 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonics from 
                   
                   
                 solved in DC_19A_n77A 
               
               
                   
                   
                 B19 into n77 
               
               
                 B19 + 
                 DC_19A_n78A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_19A_n257A 
                 4 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                   
                   
                 solved in DC_19A_n78A 
               
               
                   
                   
                 B19 into n78 
               
               
                 B19 + 
                 DC_19A_n79A 
                 6 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                 n79 + 
                   
                 harmonic from 
                   
                   
                 solved in DC_n79A-n257A 
               
               
                 n257 
                   
                 n79 into n257 
                   
                   
                 (6 th  order) 
               
               
                   
                 DC_19A_n257A 
                 6 th   
                 — 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic from 
                   
                   
                 solved in DC_19A_n79A 
               
               
                   
                   
                 B19 into n79 
               
               
                 B20 + 
                 DC_20A_n1A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 n1 + 
                 DC_20A_n3A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 n3 
               
               
                 B20 + 
                 DC_20A_n1A 
                 4 th   
                 3 rd   
                 — 
                 Harmonic problem will be 
               
               
                 n1 + 
                   
                 harmonic from 
                 IMD into 
                   
                 solved in DC_20A_n78A 
               
               
                 n78 
                   
                 B20 into n78 
                 n78 
                 — 
                 3 rd  IMD issue will be FFS 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd   
                 — 
                 3 rd  IMD issue will be FFS 
               
               
                   
                   
                   
                 IMD into 
               
               
                   
                   
                   
                 n1 
               
               
                 B20 + 
                 DC_20A_n3A 
                 2 nd   
                 3 rd  &amp; 5 th   
                 — 
                 3 rd  &amp; 5 th  IMDs problem will 
               
               
                 n3 + 
                   
                 harmonic from n3 
                 IMDs into 
                   
                 be FFS. 
               
               
                 n78 
                   
                 into n78 
                 n78 
               
               
                   
                   
                 4 th   
               
               
                   
                   
                 harmonic from 
               
               
                   
                   
                 B20 into n78 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd   
                 — 
                 3 rd  IMD problem will be 
               
               
                   
                   
                   
                 IMD into 
                   
                 FFS 
               
               
                   
                   
                   
                 n3 
               
               
                 B21 + 
                 DC_21A_n77A 
                 — 
                 2 nd  &amp; 4 th   
                 — 
                 RAN4 agreed the 
               
               
                 n77 + 
                   
                   
                 IMDs into 
                   
                 synchronous TDD 
               
               
                 n79 
                   
                   
                 n79 
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_21A_n79A 
                 — 
                 2 nd   
                 — 
                 RAN4 agreed the 
               
               
                   
                   
                   
                 IMD into 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                 n77 
                   
                 operation btw n77 and n79, 
               
               
                   
                   
                   
                   
                   
                 So MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B21 + 
                 DC_21A_n78A 
                 — 
                 2 nd  &amp; 4 th   
                 — 
                 These IMD problem are 
               
               
                 n78 + 
                   
                   
                 IMDs into 
                   
                 FFS. If consider 
               
               
                 n79 
                   
                   
                 n79 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                   
                 DC_21A_n79A 
                 — 
                 2 nd   
                 — 
                 The IMD problem are 
               
               
                   
                   
                   
                 IMD into 
                   
                 FFS. If consider 
               
               
                   
                   
                   
                 n78 
                   
                 synchronous TDD 
               
               
                   
                   
                   
                   
                   
                 operation btw n78 and n79, 
               
               
                   
                   
                   
                   
                   
                 MSD study is not 
               
               
                   
                   
                   
                   
                   
                 necessary. 
               
               
                 B21 + 
                 DC_21A_n77A 
                 7th &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n77 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n77 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_21A_n257A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 B21 + 
                 DC_21A_n78A 
                 7 th  &amp; 8 th   
                 — 
                 — 
                 No harmonics problems 
               
               
                 n78 + 
                   
                 harmonics from 
                   
                   
                 by 7 th  &amp; 8 th  order between 
               
               
                 n257 
                   
                 n78 into n257 
                   
                   
                 FR1 and FR2 
               
               
                   
                 DC_21A_n257A 
                 — 
                 — 
                 — 
                 No issues 
               
               
                 B21 + 
                 DC_21A_n79A 
                 — 
                 — 
                 — 
                 Harmonic problem will be 
               
               
                 n79 + 
                   
                   
                   
                   
                 solved in DC_n79A-n257A 
               
               
                 n257 
                   
                   
                   
                   
                 (6 th  order) 
               
               
                   
                 DC_21A_n257 
                 — 
                 — 
                 — 
                 No issues 
               
               
                   
               
            
           
         
       
     
     Table 23 shows self-interference that may occur in the LTE-NR DC combination of 4DL/2UL. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 23 
               
               
                   
               
               
                   
                   
                   
                   
                 Interference 
                   
               
               
                   
                   
                   
                   
                 due to small 
               
               
                 downlink band 
                 uplink DC 
                   
                   
                 frequency 
               
               
                 setup 
                 setup 
                 harmonic 
                 IMD 
                 isolation 
                 MSD 
               
               
                   
               
             
            
               
                 B1 + B7 + 
                 DC_1A_n3A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 n3 + n78 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_n3A-n78A. 
               
               
                   
                   
                 from n3 
                 into n78 
                   
                 2 nd  &amp;4 th  IMDs problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_1A_n3A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_1A_n78A 
                 — 
                 2 nd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n3 
                   
                 covered in DC_1A-n3A-n78A and 
               
               
                   
                   
                   
                 4 th  IMD 
                   
                 DC_1A-7A_n78A. 
               
               
                   
                   
                   
                 into B7 
               
               
                   
                 DC_7A_n3A 
                 2 nd   
                 3 rd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 into n78 
                   
                 solved in DC_n3A-n78A 
               
               
                   
                   
                 from n3 
                   
                   
                 3 rd  IMD problem will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_7A_n3A-n78A. 
               
               
                   
                 DC_7A_n78A 
                 — 
                 3 rd  &amp; 4 th   
                 — 
                 These IMDs problem will be 
               
               
                   
                   
                   
                 IMDs 
                   
                 covered in DC_7A_n1A-n78A and 
               
               
                   
                   
                   
                 into n3 
                   
                 DC_7A_n3A-n78A. 
               
               
                   
                   
                   
                 4 th  IMD 
               
               
                   
                   
                   
                 into n1 
               
               
                 B1 + B20 + 
                 DC_1A_n3A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 n3 + n78 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_n3A-n78A. 
               
               
                   
                   
                 from n3 
                 into n78 
                   
                 2 nd  &amp;4 th  IMDs problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_1A_n3A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_1A_n78A 
                 — 
                 2 nd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n3 
                   
                 covered in DC_1A_n3A-n78A and 
               
               
                   
                   
                   
                 5 th  IMD 
                   
                 DC_1A-20A _n78A 
               
               
                   
                   
                   
                 into B20 
               
               
                   
                 DC_20A_n3A 
                 2 nd   
                 3 rd  &amp; 5 th   
                 — 
                 These harmonic problems will be 
               
               
                   
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_n3A-n78A and 
               
               
                   
                   
                 from n3 
                 into n78 
                   
                 DC_20A_n78A. 
               
               
                   
                   
                 into n78 
                   
                   
                 These IMD problems will be 
               
               
                   
                   
                 4 th   
                   
                   
                 covered in DC_20A_n3A-78A. 
               
               
                   
                   
                 harmonic 
               
               
                   
                   
                 from B20 
               
               
                   
                   
                 into n78 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n3 
                   
                 covered in DC_20A_n1A-n78A and 
               
               
                   
                   
                   
                 3 rd  IMD 
                   
                 DC_20A_n3A-n78A. 
               
               
                   
                   
                   
                 into n1 
               
               
                 B3 + B7 + 
                 DC_3A_n1A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 n1 + n78 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_3A_n78A. 
               
               
                   
                   
                 from 3 
                 into n78 
                   
                 These IMD problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_3A_n78A 
                 — 
                 5 th  IMD 
                 — 
                 5 th  IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                 DC_7A_n1A 
                 — 
                 4 th  &amp; 5 th   
                 — 
                 4 th  &amp; 5 th  IMDs problem will be 
               
               
                   
                   
                   
                 IMDs 
                   
                 covered in DC_7A_n1A-n78A. 
               
               
                   
                   
                   
                 into n78 
               
               
                   
                 DC_7A_n78A 
                 — 
                 3 rd  &amp; 
                 — 
                 These IMDs problem will be 
               
               
                   
                   
                   
                 4 th  IMDs 
                   
                 covered in DC_7A_n1A-n78A and 
               
               
                   
                   
                   
                 into B3 
                   
                 DC_3A-7A-n78A. 
               
               
                   
                   
                   
                 4 th  IMD 
               
               
                   
                   
                   
                 into n1 
               
               
                 B3 + B20 + 
                 DC_3A_n1A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 n1 + n78 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_3A_n78A. 
               
               
                   
                   
                 from 3 
                 into n78 
                   
                 These IMD problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_3A_n78A 
                 — 
                 5 th  IMD 
                 — 
                 5 th  IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                 DC_20A_n1A 
                 4 th   
                 3 rd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 into n78 
                   
                 solved in DC_20A_n78A 
               
               
                   
                   
                 from B20 
                   
                   
                 3 rd  IMD issue will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_20A_n1A-n78A 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into B3 
                   
                 covered in DC_20A_n1A-78A and 
               
               
                   
                   
                   
                 3 rd  IMD 
                   
                 DC_3A-20A_n78A. 
               
               
                   
                   
                   
                 into n1 
               
               
                 B7 + B20 + 
                 DC_7A_n1A 
                 — 
                 5 th  IMD 
                 — 
                 The IMD issue should be 
               
               
                 n1 + n3 
                   
                   
                 into B20 
                   
                 covered in 3DL DC_7A-20A_n1A 
               
               
                   
                   
                   
                   
                   
                 in TR37.863-02-01 
               
               
                   
                 DC_7A_n3A 
                 — 
                 2 nd  IMD 
                 — 
                 The IMD issue should be 
               
               
                   
                   
                   
                 into B20 
                   
                 covered in 3DL DC_7A-20A_n3A 
               
               
                   
                   
                   
                   
                   
                 w/2UL_DC_7A-n3A in 
               
               
                   
                   
                   
                   
                   
                 TR37.863-02-01 
               
               
                   
                 DC_20A_n1A 
                 — 
                 — 
                 — 
                 No issue 
               
               
                   
                 DC_20A_n3A 
                 — 
                 2 nd  &amp; 3 rd   
                 — 
                 The IMD issue should be 
               
               
                   
                   
                   
                 IMDs 
                   
                 covered in 3DL DC_7A-20A_n3A 
               
               
                   
                   
                   
                 into B7 
                   
                 w/2UL_DC_20A-n3A in 
               
               
                   
                   
                   
                   
                   
                 TR37.863-02-01 
               
               
                 B7 + B20 + 
                 DC_7A_n1A 
                 — 
                 5 th  IMD 
                 — 
                 The IMD issue should be 
               
               
                 n1 + n78 
                   
                   
                 into B20 
                   
                 covered in 3DL DC_7A-20A_n1A 
               
               
                   
                   
                   
                 4 th  &amp; 5 th   
                   
                 in TR37.863-02-01 
               
               
                   
                   
                   
                 IMDs 
                   
                 4 th  &amp; 5 th  IMDs problem will be 
               
               
                   
                   
                   
                 into n78 
                   
                 covered in DC_7A_n1A-n78A. 
               
               
                   
                 DC_7A_n78A 
                 — 
                 4 th  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_7A_n1A-n78A and 
               
               
                   
                   
                   
                 2 nd  &amp; 5 th   
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 IMD 
               
               
                   
                   
                   
                 into B20 
               
               
                   
                 DC_20A_n1A 
                 4 th   
                 3 rd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 into n78 
                   
                 solved in DC_20A_n78A 
               
               
                   
                   
                 from B20 
                   
                   
                 3 rd  IMD issue will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_20A_n1A-n78A 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMDs issue will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_20A_n1A-n78A and 
               
               
                   
                   
                   
                 2 nd  IMD 
                   
                 DC_7A-20A_n78A 
               
               
                   
                   
                   
                 into B7 
               
               
                 B7 + B20 + 
                 DC_7A_n3A 
                 2 nd   
                 2 nd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                 n3 + n78 
                   
                 harmonic 
                 into B20 
                   
                 solved in DC_n3A-n78A 
               
               
                   
                   
                 from n3 
                 3 rd  IMD 
                   
                 These IMDs issue will be 
               
               
                   
                   
                 into n78 
                 into n78 
                   
                 covered in DC_7A-20A_n3A and 
               
               
                   
                   
                   
                   
                   
                 DC_7A_n3A-n78A 
               
               
                   
                 DC_7A_n78A 
                 — 
                 3 rd  &amp; 4 th   
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 IMDs 
                   
                 covered in DC_7A_n3A-n78A and 
               
               
                   
                   
                   
                 into n3 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 2 nd  &amp; 5 th   
               
               
                   
                   
                   
                 IMD 
               
               
                   
                   
                   
                 into B20 
               
               
                   
                 DC_20A_n3A 
                 2 nd   
                 2 nd  &amp; 3 rd   
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 IMDs 
                   
                 solved in DC_n3A-n78A and 
               
               
                   
                   
                 from n3 
                 into B7 
                   
                 DC_20A-n78A. 
               
               
                   
                   
                 into n78 
                 3 rd  &amp; 5 th   
                   
                 The IMD issue should be 
               
               
                   
                   
                 4 th   
                 IMDs 
                   
                 covered in DC_7A-20A-n3A and 
               
               
                   
                   
                 harmonic 
                 into n78 
                   
                 DC_20A_n3A-n78A 
               
               
                   
                   
                 from B20 
               
               
                   
                   
                 into n78 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n3 
                   
                 covered in DC_20A_n3A-n78A and 
               
               
                   
                   
                   
                 2 nd  IMD 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 into B7 
               
               
                   
               
            
           
         
       
     
     Table 24 shows self-interference that may occur in the LTE-NR DC combination of 5DL/2UL. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 24 
               
               
                   
               
               
                   
                   
                   
                   
                 Interference 
                   
               
               
                   
                   
                   
                   
                 due to small 
               
               
                 Downlink band 
                 Uplink DC 
                   
                   
                 frequency 
               
               
                 setup 
                 setup 
                 harmonic 
                 IMD 
                 isolation 
                 MSD 
               
               
                   
               
             
            
               
                 B1 + B7 + 
                 DC_1A_n3A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 B20 + n3 + 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_n3A-n78A. 
               
               
                 n78 
                   
                 from n3 
                 into n78 
                   
                 2 nd  &amp;4 th  IMDs problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_1A_n3A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_1A_n78A 
                 — 
                 2 nd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n3 
                   
                 covered in DC_1A_n3A-n78A, 
               
               
                   
                   
                   
                 5 th  IMD 
                   
                 DC_1A-20A_n78A and 
               
               
                   
                   
                   
                 into B20 
                   
                 DC_1A-7A_n78A. 
               
               
                   
                   
                   
                 4 th  IMD 
               
               
                   
                   
                   
                 into B7 
               
               
                   
                 DC_7A_n3A 
                 2 nd   
                 2 nd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 into B20 
                   
                 solved in DC_n3A-n78A 
               
               
                   
                   
                 from n3 
                 3 rd  IMD 
                   
                 These IMDs issue will be 
               
               
                   
                   
                 into n78 
                 into n78 
                   
                 covered in DC_7A-20A_n3A and 
               
               
                   
                   
                   
                   
                   
                 DC_7A_n3A-n78A 
               
               
                   
                 DC_7A_n78A 
                 — 
                 4 th  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into B1 
                   
                 covered in DC_1A-7A_n78A, 
               
               
                   
                   
                   
                 3 rd  &amp; 4 th   
                   
                 DC_7A_n3A-n78A and 
               
               
                   
                   
                   
                 IMDs 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 into n3 
               
               
                   
                   
                   
                 2 nd  &amp; 5 th   
               
               
                   
                   
                   
                 IMD 
               
               
                   
                   
                   
                 into B20 
               
               
                   
                 DC_20A_n3A 
                 2 nd   
                 2 nd  &amp; 3 rd   
                 — 
                 Harmonic problems will be 
               
               
                   
                   
                 harmonic 
                 IMDs 
                   
                 solved in CA_n3A-n78A 
               
               
                   
                   
                 from n3 
                 into B7 
                   
                 The 2 nd  &amp; 3 rd  IMDs issue 
               
               
                   
                   
                 into n78 
                 3 rd  &amp; 5 th   
                   
                 should be covered in 
               
               
                   
                   
                   
                 IMDs 
                   
                 3DL DC_7A-20A_n3A 
               
               
                   
                   
                   
                 into n78 
                   
                 w/2UL_DC_20A-n3A 
               
               
                   
                   
                   
                   
                   
                 in TR37.863-02-01. 
               
               
                   
                   
                   
                   
                   
                 The 3 rd &amp;5 th  IMDs issue 
               
               
                   
                   
                   
                   
                   
                 should be covered in 
               
               
                   
                   
                   
                   
                   
                 3DL DC_20A_n3A-n78A 
               
               
                   
                   
                   
                   
                   
                 w/2UL_DC_20A-n3A. 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into B1 
                   
                 covered in DC_1A-20A_n78A, 
               
               
                   
                   
                   
                 3 rd  IMD 
                   
                 DC_20A_n3A-n78A and 
               
               
                   
                   
                   
                 into n3 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 2 nd  IMD 
               
               
                   
                   
                   
                 into B7 
               
               
                 B3 + B7 + 
                 DC_3A_n1A 
                 2 nd   
                 2 nd  &amp; 4 th   
                 Yes 
                 Harmonic problems will be 
               
               
                 B20 + n1 + 
                   
                 harmonic 
                 IMDs 
                   
                 covered in DC_3A_n78A. 
               
               
                 n78 
                   
                 from B3 
                 into n78 
                   
                 These IMD problems will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                   
                   
                   
                   
                 Small freq. gap was covered in 
               
               
                   
                   
                   
                   
                   
                 Table 7.3.1A-0bA in TS36.101 
               
               
                   
                 DC_3A_n78A 
                 — 
                 5 th  IMD 
                 — 
                 5 th  IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_3A_n1A-n78A. 
               
               
                   
                 DC_7A_n1A 
                 — 
                 5 th  IMD 
                 — 
                 The IMD issue should be 
               
               
                   
                   
                   
                 into B20 
                   
                 covered in 3DL DC_7A-20A_n1A 
               
               
                   
                   
                   
                 4 th  &amp; 5 th   
                   
                 in TR37.863-02-01 
               
               
                   
                   
                   
                 IMDs 
                   
                 4 th  &amp; 5 th  IMDs problem will be 
               
               
                   
                   
                   
                 into n78 
                   
                 covered in DC_7A_n1A-n78A. 
               
               
                   
                 DC_7A_n78A 
                 — 
                 4 th  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_7A_n1A_n78A, 
               
               
                   
                   
                   
                 3 rd  &amp; 4 th   
                   
                 DC_3A-7A-n78A and 
               
               
                   
                   
                   
                 IMDs 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 into B3 
               
               
                   
                   
                   
                 2 nd  &amp; 5 th   
               
               
                   
                   
                   
                 IMD 
               
               
                   
                   
                   
                 into B20 
               
               
                   
                 DC_20A_n1A 
                 4 th   
                 3 rd  IMD 
                 — 
                 Harmonic problem will be 
               
               
                   
                   
                 harmonic 
                 into n78 
                   
                 solved in DC_20A_n78A 
               
               
                   
                   
                 from B20 
                   
                   
                 3 rd  IMD issue will be 
               
               
                   
                   
                 into n78 
                   
                   
                 covered in DC_20A_n1A-n78A 
               
               
                   
                 DC_20A_n78A 
                 — 
                 3 rd  IMD 
                 — 
                 These IMD problems will be 
               
               
                   
                   
                   
                 into n1 
                   
                 covered in DC_20A_n1A_n78A, 
               
               
                   
                   
                   
                 3 rd  IMD 
                   
                 DC_3A-20A_n78A and 
               
               
                   
                   
                   
                 into B3 
                   
                 DC_7A-20A_n78A. 
               
               
                   
                   
                   
                 2 nd  IMD 
               
               
                   
                   
                   
                 into B7 
               
               
                   
               
            
           
         
       
     
     On the basis of the assumptions according to Table 22 to Table 24, Table 25 proposes MST test setup based on self-interference. Since the MSD levels are measurement results, they may have an error of ±1 dB. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 25 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_1A_n3A- 
                 1 
                 IMD2 
                 |f B1  + f n3 | 
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 2.1 
                 N/A 
               
               
                 n78A 
                 n3  
                   
                   
                 1750 
                 5 
                 25 
                 1845 
                 5 
               
               
                   
                 n78 
                   
                   
                 3700 
                 10 
                 52 
                 3700 
                 10 
                   
                 28.4 
               
               
                   
                 1 
                 IMD4 
                 |3*f n3  − f B1 |      
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 1.2 
                 N/A 
               
               
                   
                 n3  
                   
                   
                 1770 
                 5 
                 25 
                 1865 
                 5 
               
               
                   
                 n78 
                   
                   
                 3360 
                 10 
                 52 
                 3360 
                 10 
                   
                 11.2 
               
               
                   
                 1 
                 IMD2 
                 |f n78  − f B1 | 
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 1.9 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3780 
                 10 
                 52 
                 3780 
                 10 
               
               
                   
                 n3  
                   
                   
                 1735 
                 5 
                 25 
                 1830 
                 5 
                   
                 27.9 
               
               
                 DC_1A_n78A- 
                 1 
                 IMD3 
                 |2*f n78  − f B1 |  
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 1.6 
                 N/A 
               
               
                 n79A 
                 n78 
                   
                   
                 3410 
                 10 
                 52 
                 3410 
                 10 
               
               
                   
                 n79 
                   
                   
                 4870 
                 40 
                 216 
                 4870 
                 40 
                   
                 15.9 
               
               
                   
                 1 
                 IMD5 
                 |2*f n79  − 3*f B1 | 
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 0.4 
                 N/A 
               
               
                   
                 n79 
                   
                   
                 4670 
                 40 
                 216 
                 4670 
                 40 
               
               
                   
                 n78 
                   
                   
                 3490 
                 10 
                 52 
                 3490 
                 10 
                   
                  4.6 
               
               
                 DC_3A_n1A- 
                 n1 
                 IMD2 
                  |f n1  + f B3 | 
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 2.1 
                 N/A 
               
               
                 n78A 
                 3 
                   
                   
                 1750 
                 5 
                 25 
                 1845 
                 5 
               
               
                   
                 n78 
                   
                   
                 3700 
                 10 
                 52 
                 3700 
                 10 
                   
                 28.4 
               
               
                   
                 n1  
                 IMD4 
                 |3*f B3  − f n1 |     
                 1950 
                 5 
                 25 
                 2140 
                 5 
                 1.2 
                 N/A 
               
               
                   
                 3 
                   
                   
                 1770 
                 5 
                 25 
                 1865 
                 5 
               
               
                   
                 n78 
                   
                   
                 3360 
                 10 
                 52 
                 3360 
                 10 
                   
                 11.2 
               
               
                   
                 3 
                 IMD5 
                 |2*f n78  − 3*f B3 | 
                 1770 
                 5 
                 25 
                 1865 
                 5 
                 0.3 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3720 
                 10 
                 52 
                 3720 
                 10 
               
               
                   
                 n1  
                   
                   
                 1940 
                 5 
                 25 
                 2130 
                 5 
                   
                 3.5 
               
               
                 DC_3A_n78A- 
                 3 
                 IMD3 
                 |2*f n78  − f B3 |  
                 1770 
                 5 
                 25 
                 1865 
                 5 
                 1.7 
                 N/A 
               
               
                 n79A 
                 n78 
                   
                   
                 3340 
                 10 
                 52 
                 3340 
                 10 
               
               
                   
                 n79 
                   
                   
                 4910 
                 40 
                 216 
                 4910 
                 40 
                   
                 16.3 
               
               
                   
                 3 
                 IMD5 
                 |2*f n79  − 3*f B3 | 
                 1770 
                 5 
                 25 
                 1865 
                 5 
                 0.5 
                 N/A 
               
               
                   
                 n79 
                   
                   
                 4510 
                 40 
                 216 
                 4510 
                 40 
               
               
                   
                 n78 
                   
                   
                 3710 
                 10 
                 52 
                 3710 
                 10 
                   
                  4.2 
               
               
                 DC_7A_n1A- 
                 n1  
                 IMD4 
                     |f B7  − 3*f n1 | 
                 1970 
                 5 
                 25 
                 2160 
                 5 
                 1.2 
                 N/A 
               
               
                 n78A 
                 7 
                   
                   
                 2520 
                 5 
                 25 
                 2640 
                 5 
               
               
                   
                 n78 
                   
                   
                 3390 
                 10 
                 52 
                 3390 
                 10 
                   
                 10.1 
               
               
                   
                 n1  
                 IMD5 
                     |3*f B7  − 2*f n1 | 
                 1970 
                 5 
                 25 
                 2160 
                 5 
                 0.3 
                 N/A 
               
               
                   
                 7 
                   
                   
                 2520 
                 5 
                 25 
                 2640 
                 5 
               
               
                   
                 n78 
                   
                   
                 3620 
                 10 
                 52 
                 3620 
                 10 
                   
                  3.8 
               
               
                   
                 7 
                 IMD4 
                 |2*f n78  − 2*f B7 | 
                 2530 
                 5 
                 25 
                 2650 
                 5 
                 0.9 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3610 
                 10 
                 52 
                 3610 
                 10 
               
               
                   
                 n1  
                   
                   
                 1970 
                 5 
                 25 
                 2160 
                 5 
                   
                  9.0 
               
               
                 DC_7A_n3A- 
                 7 
                 IMD3 
                 |2*f B7  − f n3 |     
                 2560 
                 5 
                 25 
                 2680 
                 5 
                 1.5 
                 N/A 
               
               
                 n78A 
                 n3  
                   
                   
                 1730 
                 5 
                 25 
                 1825 
                 5 
               
               
                   
                 n78 
                   
                   
                 3390 
                 10 
                 52 
                 3390 
                 10 
                   
                 16.1 
               
               
                   
                 7 
                 IMD3 
                 |2*f B7  − f n78 |  
                 2565 
                 5 
                 25 
                 2685 
                 5 
                 1.4 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3310 
                 10 
                 52 
                 3310 
                 10 
               
               
                   
                 n3  
                   
                   
                 1725 
                 5 
                 25 
                 1820 
                 5 
                   
                 15.6 
               
               
                   
                 7 
                 IMD4 
                 |2*f n78  − 2*f B7 | 
                 2565 
                 5 
                 25 
                 2685 
                 5 
                 0.8 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3480 
                 10 
                 52 
                 3480 
                 10 
               
               
                   
                 n3  
                   
                   
                 1735 
                 5 
                 25 
                 1830 
                 5 
                   
                  9.2 
               
               
                 DC_19A_n78A- 
                 19  
                 IMD2 
                  |f n78  + f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 2.4 
                 N/A 
               
               
                 n79A 
                 n78 
                   
                   
                 3680 
                 10 
                 52 
                 3680 
                 10 
               
               
                   
                 n79 
                   
                   
                 4515 
                 40 
                 216 
                 4515 
                 40 
                   
                 29.3 
               
               
                   
                 19  
                 IMD3 
                   |f n78  + 2*f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 2.0 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3310 
                 10 
                 52 
                 3310 
                 10 
               
               
                   
                 n79 
                   
                   
                 4980 
                 40 
                 216 
                 4980 
                 40 
                   
                 16.8 
               
               
                   
                 19  
                 IMD4 
                     |2*f n78  − 2*f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 1.3 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3310 
                 10 
                 52 
                 3310 
                 10 
               
               
                   
                 n79 
                   
                   
                 4950 
                 40 
                 216 
                 4950 
                 40 
                   
                 11.5 
               
               
                   
                 19  
                 IMD5 
                     |2*f n78  − 3*f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 0.7 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3680 
                 10 
                 52 
                 3680 
                 10 
               
               
                   
                 n79 
                   
                   
                 4855 
                 40 
                 216 
                 4855 
                 40 
                   
                  5.2 
               
               
                   
                 19  
                 IMD2 
                     |f n79  − f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 2.2 
                 N/A 
               
               
                   
                 n79 
                   
                   
                 4550 
                 40 
                 216 
                 4550 
                 40 
               
               
                   
                 n78 
                   
                   
                 3715 
                 10 
                 52 
                 3715 
                 10 
                   
                 28.8 
               
               
                   
                 19  
                 IMD3 
                     |f n79  − 2*f B19 | 
                 835 
                 5 
                 25 
                 880 
                 5 
                 1.6 
                 N/A 
               
               
                   
                 n79 
                   
                   
                 4980 
                 40 
                 216 
                 4980 
                 40 
               
               
                   
                 n78 
                   
                   
                 3310 
                 10 
                 52 
                 3310 
                 10 
                   
                 16.3 
               
               
                 DC_20A_n1A- 
                 20  
                 IMD3 
                   |f n1  + 2*f B20 | 
                 845 
                 5 
                 25 
                 804 
                 5 
                 1.5 
                 N/A 
               
               
                 n78A 
                 n1  
                   
                   
                 1940 
                 5 
                 25 
                 2130 
                 5 
               
               
                   
                 n78 
                   
                   
                 3630 
                 10 
                 52 
                 3630 
                 10 
                   
                 16.0 
               
               
                   
                 20  
                 IMD3 
                     |f n78  − 2*f B20 | 
                 835 
                 5 
                 25 
                 794 
                 5 
                 1.3 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3790 
                 10 
                 52 
                 3790 
                 10 
               
               
                   
                 n1  
                   
                   
                 1930 
                 5 
                 25 
                 2120 
                 5 
                   
                 15.3 
               
               
                 DC_20A_n3A- 
                 20  
                 IMD3 
                 |2*f B20  + f n3 |      
                 845 
                 5 
                 25 
                 804 
                 5 
                 1.5 
                 N/A 
               
               
                 n78A 
                 n3  
                   
                   
                 1730 
                 5 
                 25 
                 1825 
                 5 
               
               
                   
                 n78 
                   
                   
                 3420 
                 10 
                 52 
                 3420 
                 10 
                   
                 16.1 
               
               
                   
                 20  
                 IMD5 
                 |2*f B20  − 3*f n3 |  
                 845 
                 5 
                 25 
                 804 
                 5 
                 0.4 
                 N/A 
               
               
                   
                 n3  
                   
                   
                 1730 
                 5 
                 25 
                 1825 
                 5 
               
               
                   
                 n78 
                   
                   
                 3500 
                 10 
                 52 
                 3500 
                 10 
                   
                  4.5 
               
               
                   
                 20  
                 IMD3 
                     |2*f B20  − 2*f n78 | 
                 845 
                 5 
                 25 
                 804 
                 5 
                 1.3 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3550 
                 10 
                 52 
                 3550 
                 10 
               
               
                   
                 n3  
                   
                   
                 1765 
                 5 
                 25 
                 1860 
                 5 
                   
                 15.7 
               
               
                 DC_21A_n78A- 
                 21  
                 IMD2 
                  |f n78  + f B21 | 
                 1453 
                 5 
                 25 
                 1501 
                 5 
                 2.6 
                 N/A 
               
               
                 n79A 
                 n78 
                   
                   
                 3420 
                 10 
                 52 
                 3420 
                 10 
               
               
                   
                 n79 
                   
                   
                 4873 
                 40 
                 216 
                 4873 
                 40 
                   
                 30.1 
               
               
                   
                 21  
                 IMD4 
                     |2*f n78  − 2*f B21 | 
                 1453 
                 5 
                 25 
                 1501 
                 5 
                 1.0 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3780 
                 10 
                 52 
                 3780 
                 10 
               
               
                   
                 n79 
                   
                   
                 4654 
                 40 
                 21 
                 4654 
                 40 
                   
                 11.3 
               
               
                   
                 21  
                 IMD2 
                     |f n79  − f B21 | 
                 1453 
                 5 
                 25 
                 1501 
                 5 
                 2.5 
                 N/A 
               
               
                   
                 n79 
                   
                   
                 4940 
                 40 
                 216 
                 4940 
                 40 
               
               
                   
                 n78 
                   
                   
                 3487 
                 10 
                 52 
                 3487 
                 10 
                   
                 29.8 
               
               
                   
               
            
           
         
       
     
     Here, the DC harmonic problem is also present between 6 GHz or lower and mmWave as shown in Table 26 below. 
     
       
         
           
               
               
               
             
               
                 TABLE 26 
               
             
            
               
                   
               
               
                 LTE band 
                 NR band (MHz) 
                   
               
            
           
           
               
               
               
               
               
            
               
                 NR 
                 UL 
                   
                 26500-29500 
                   
               
               
                 band 
                 range 
                 Harm. 
                 Harmonic range 
               
               
                 (FR1) 
                 (MHz) 
                 Order 
                 (MHz) 
                 harmonic/IMD 
               
               
                   
               
               
                 n79 
                 4400-5000 
                 6x 
                 26400-30000 
                 1) Harmonic into NR 
               
               
                   
                   
                   
                   
                 (worst case) 
               
               
                   
                   
                   
                   
                 2) No IMD into n79 
               
               
                   
                   
                   
                   
                 3) No IMD into n257 
               
               
                   
               
            
           
         
       
     
     According to Table 26, since 6 th  harmonic falls on the reception band of n257, the worst case in the harmonic problem according to the DC band combination is DC_n79A-n257A. Thus, in the third disclosure, sixth harmonic in the DC_n79A-n257A combination is examined. Hereinafter, impact of the harmonic which may fall from mmWave to NR band is examined. 
     Analysis of Harmonic in NR (n257) 
     Currently, an LTE (4G) modem and a 5G (NR) modem may be separately developed and fused as telephony elements. In addition, the antenna may be used separately in the LTE band and the mmWave NR band. Based on the RF architecture, the MSD level in the n257 by the sixth harmonic may be derived. 
     Table 27 shows RF component isolation parameters of the DC_n79A-n257A terminal to derive the MSD level in mmWave. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 27 
               
             
            
               
                   
                   
               
               
                   
                 Option 1: W/O HTF 
                   
               
               
                   
                 Primary 
               
            
           
           
               
               
               
               
            
               
                   
                 Parameter 
                 Value 
                 H6 level 
               
               
                   
                   
               
            
           
           
               
               
               
               
            
               
                   
                 n79 Tx in PA output 
                 28 
                   
               
               
                   
                 n79 PA H6 attenuation 
                 65 
                 −37 
               
               
                   
                 n79 duplexer H6 attenuation 
                 30 
                 −67 
               
               
                   
                 Harmonic filter 
                 0 
                 −67 
               
               
                   
                 HB switch H6 
                 −100 
                 −67 
               
               
                   
                 Diplexer attenuation 
                 25 
                 −92.0 
               
               
                   
                 Antenna isolation 
                 10 
                 −102.0 
               
               
                   
                 mmW switch attenuation 
                 0.7 
                 −102.7 
               
               
                   
                 mmW switch H6 
                 −110 
                 −102.0 
               
               
                   
                 n257 Rx filter atten. 
                 1.5 
                 −103.5 
               
               
                   
                 n257 Rx filter H6 
                 −110 
                 −102.6 
               
               
                   
                 n79 PA to n257 LNA isolation 
                 60 
                 −97.0 
               
               
                   
                 Composite 
                   
                 −95.9 
               
               
                   
                   
               
            
           
         
       
     
     Table 28 shows an MSD level for the DC_n79A-n257A derived from Table 27. More precisely, it represents an MSD level for NR band n257 having a channel bandwidth (CBW) of 50 MHz. 
     
       
         
           
               
               
             
               
                   
                 TABLE 28 
               
             
            
               
                   
                   
               
               
                   
                 W/O HTF 
               
            
           
           
               
               
               
               
            
               
                   
                   
                 H6 level 
                   
               
               
                   
                 Thermal 
                 (dBm) 
                 Estimated Sensitivity (dB) 
               
               
                   
                   
               
            
           
           
               
               
               
               
            
               
                 Main Path 
                 −94.8 
                 −95.9 
                 −92.3 
               
               
                 Current sensitivity 
                   
                   
                 [−92.1~−85.7] 
               
               
                 level at n257 
                   
                   
                 dBm/50 MHz 
               
               
                   
               
            
           
         
       
     
     Based on the MSD in Table 28, the MSD is proposed as follows.
         Proposal 1: MSD based on sixth harmonic in DC_n79A-n257A may be 0 dB       

     Other MSD Analysis 
     Table 29 shows terminal RF front-end component parameters for deriving MSD levels at 6 GHz or lower. 
     
       
         
           
               
               
             
               
                   
                 TABLE 29 
               
             
            
               
                   
                   
               
               
                   
                 Triplexer-diplexer 
               
               
                   
                 Architecture w/separate ant. 
               
               
                   
                 DC_1A-42A_n79A, DC_3A-42A_n79A, 
               
               
                   
                 DC_19A-42A_n79A 
               
            
           
           
               
               
               
               
               
            
               
                 UE ref. Architecture 
                 IP2 
                 IP3 
                 IP4 
                 IP5 
               
               
                 Component 
                 (dBm) 
                 (dBm) 
                 (dBm) 
                 (dBm) 
               
               
                   
               
            
           
           
               
               
               
               
               
            
               
                 Ant. Switch 
                 112 
                 68 
                 55 
                 55 
               
               
                 Triplexer 
                 115 
                 82 
                 55 
                 55 
               
               
                 Quadplexer 
                 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 30 shows isolation levels according to RF components. 
     
       
         
           
               
               
               
             
               
                 TABLE 30 
               
               
                   
               
               
                   
                 Value 
                   
               
               
                 Isolation Parameter 
                 (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 
               
               
                 Quadplexer 
                 20 
                 L-L or H-M 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 
               
               
                   
               
            
           
         
       
     
     Based on Table 29 and Table 30, the MSD levels are proposed as illustrated in Table 31. Since the MSD levels correspond to measurement results, they may have an error of about ±1 dB. 
     
       
         
           
               
               
             
               
                 TABLE 31 
               
             
            
               
                   
               
               
                 E − 2*UTRA Band/Channel bandwidth/N RB /Duplex mode 
                   
               
            
           
           
               
               
               
               
            
               
                 EUTRA/NR DC 
                   
                 UL/DL 
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
            
               
                 DL 
                 UL 
                 EUTRA/ 
                 UL F c   
                 BW 
                 UL 
                 DL F c   
                 MSD 
                 Duplex 
                 Source 
               
               
                 Configuration 
                 Configuration 
                 NR band 
                 (MHz) 
                 (MHz ) 
                 C LRB   
                 (MHz) 
                 (dB) 
                 mode 
                 of IMD 
               
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_1A- 
                 DC_42A_n79A 
                 1 
                 1975 
                 5 
                 25 
                 2165 
                 16.2 
                 FDD 
                 IMD3 
               
               
                 42A_n79A 
                   
                 42  
                 3402.5 
                 5 
                 25 
                 3402.5 
                 N/A 
                 TDD 
                 N/A 
               
               
                   
                   
                 n79 
                 4640 
                 40 
                 216 
                 4640 
                 N/A 
                   
                 N/A 
               
               
                   
                 DC_1A_n79A 
                 1 
                 1977.5 
                 5 
                 25 
                 2167.5 
                 N/A 
                 FDD 
                 N/A 
               
               
                   
                   
                 42  
                 3490 
                 5 
                 25 
                 3490 
                  4.5 
                 TDD 
                 IMD5 
               
               
                   
                   
                 n79 
                 4420 
                 40 
                 216 
                 4420 
                 N/A 
                   
                 N/A 
               
               
                 DC_3A- 
                 DC_42A_n79A 
                 3 
                 1760 
                 5 
                 25 
                 1855 
                 17.1 
                 FDD 
                 IMD3 
               
               
                 42A_n79A 
                   
                 42  
                 3402.5 
                 5 
                 25 
                 3402.5 
                 N/A 
                 TDD 
                 N/A 
               
               
                   
                   
                 n79 
                 4950 
                 40 
                 216 
                 4950 
                 N/A 
                   
                 N/A 
               
               
                   
                 DC_3A_n79A 
                 3 
                 1780 
                 5 
                 25 
                 1875 
                 N/A 
                 FDD 
                 N/A 
               
               
                   
                   
                 42  
                 3500 
                 5 
                 25 
                 3500 
                  3.9 
                 TDD 
                 IMD5 
               
               
                   
                   
                 n79 
                 4420 
                 40 
                 216 
                 4420 
                 N/A 
                   
                 N/A 
               
               
                 DC_19A- 
                 DC_42A_n79A 
                 19 
                 842.5 
                 5 
                 25 
                 887.5 
                 20.6 
                 FDD 
                 IMD2 
               
               
                 42A_n79A 
                   
                 42 
                 3517.5 
                 5 
                 25 
                 3517.5 
                 N/A 
                 TDD 
                 N/A 
               
               
                   
                   
                 n79 
                 4420 
                 40 
                 216 
                 4420 
                 N/A 
                   
                 N/A 
               
               
                   
               
            
           
         
       
     
     Also, the MSD due to the occurrence of the IMD needs to specify a sensitivity level (desense level) for the DC band combination (LTE (3DL/1UL)+NR (1DL/1UL)) having the IMD problem. Table 32 below shows the IMD problem for LTE (3DL/1UL)+NR (1DL/1UL) DC band combinations. 
     
       
         
           
               
               
               
               
               
               
             
               
                 TABLE 32 
               
               
                   
               
               
                   
                   
                   
                   
                 Interference 
                   
               
               
                   
                   
                   
                   
                 due to 
               
               
                   
                   
                   
                   
                 small 
               
               
                 Downlink 
                 Uplink DC 
                   
                   
                 frequency 
               
               
                 band setup 
                 setup 
                 Harmonic 
                 IMD 
                 isolation 
                 MSD 
               
               
                   
               
             
            
               
                 B1 + B18 + 
                 DC_1A- 
                   
                 5 th  IMD into 
                 — 
                 5 th  IMD will be 
               
               
                 B28 + n77 
                 n77A 
                   
                 B18 
                   
                 discussed later 
               
               
                   
                   
                   
                 5 th  IMD into 
               
               
                   
                   
                   
                 B28 
               
               
                   
                 DC_18A- 
                 — 
                 3 rd  IMD into B1 
                 — 
                 3 rd  &amp; 5 th  IMD will be 
               
               
                   
                 n77A 
                   
                 5 th  IMD into 
                   
                 discussed later 
               
               
                   
                   
                   
                 B28 
               
               
                   
                 DC_28A- 
                   
                 3 rd  IMD into B1 
                   
                 3 rd  &amp; 5 th  IMD will 
               
               
                   
                 n77A 
                   
                 5 th  IMD into 
                   
                 be discussed later 
               
               
                   
                   
                   
                 B18 
               
               
                 B1 + B18 + 
                 DC_1A- 
                   
                 5 th  IMD into 
                 — 
                 5 th  IMD will be 
               
               
                 B28 + n78 
                 n78A 
                   
                 B18 
                   
                 discussed later 
               
               
                   
                   
                   
                 5 th  IMD into 
               
               
                   
                   
                   
                 B28 
               
               
                   
                 DC_18A- 
                   
                 3 rd  IMD into B1 
                 — 
                 3 rd  IMD will be 
               
               
                   
                 n78A 
                   
                   
                   
                 discussed later 
               
               
                   
                 DC_28A- 
                 — 
                 3 rd  IMD into B1 
                 — 
                 3 rd  &amp; 5 th  IMD will be 
               
               
                   
                 n78A 
                   
                 5 th  IMD into 
                   
                 discussed later 
               
               
                   
                   
                   
                 B18 
               
               
                   
               
            
           
         
       
     
     Based on Table 32, test setup and MSD levels are proposed as illustrated in Table 33. Since the MSD levels correspond to measurement results, they may have an error of about ±1 dB. 
     
       
         
           
               
               
               
               
               
               
               
               
               
               
             
               
                 TABLE 33 
               
               
                   
               
               
                   
                   
                   
                 UL 
                 UL 
                   
                 DL 
                 DL 
                   
                   
               
               
                 DC 
                 UL 
                   
                 F c   
                 BW 
                 UL 
                 F c   
                 BW 
                 CF 
                 MSD 
               
               
                 bands 
                 DC 
                 IMD 
                 (MHz) 
                 (MHz) 
                 RB # 
                 (MHz) 
                 (MHz) 
                 (dB) 
                 (dB) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
               
               
               
               
               
               
            
               
                 DC_1A-18A- 
                  1 
                 IMD5 
                     |2*f B77  − 3*f B1 | 
                 1960 
                 5 
                 25 
                 2150 
                 5 
                 0.7 
                 N/A 
               
               
                 28A_n77A 
                 n77 
                   
                   
                 3330 
                 10 
                 52 
                 3330 
                 10 
               
               
                   
                 28 
                   
                   
                 725 
                 5 
                 25 
                 780 
                 5 
                   
                 4.3 
               
               
                   
                 18 
                 IMD3 
                 |2*f B18  − f B77 | 
                 825 
                 5 
                 25 
                 870 
                 5 
                 1.8 
                 N/A 
               
               
                   
                 n77 
                   
                   
                 3770 
                 10 
                 52 
                 3770 
                 10 
               
               
                   
                  1 
                   
                   
                 1930 
                 5 
                 25 
                 2120 
                 5 
                   
                 16.4  
               
               
                   
                 18 
                 IMD5 
                 |4*f B18  − f B77 | 
                 820 
                 5 
                 25 
                 865 
                 5 
                 0.7 
                 N/A 
               
               
                   
                 n77 
                   
                   
                 4058 
                 10 
                 52 
                 4058 
                 10 
               
               
                   
                 28 
                   
                   
                 723 
                 5 
                 25 
                 778 
                 5 
                   
                 4.4 
               
               
                   
                 28 
                 IMD3 
                 |2*f B28  − f B77 | 
                 740 
                 5 
                 25 
                 795 
                 5 
                 1.5 
                 N/A 
               
               
                   
                 n77 
                   
                   
                 3630 
                 10 
                 52 
                 3630 
                 10 
               
               
                   
                  1 
                   
                   
                 1960 
                 5 
                 25 
                 2150 
                 5 
                   
                 15.8  
               
               
                   
                 28 
                 IMD5 
                 |4*f B28  − f B77 | 
                 723 
                 5 
                 25 
                 778 
                 5 
                 0.5 
                 N/A 
               
               
                   
                 n77 
                   
                   
                 3757 
                 10 
                 52 
                 3757 
                 10 
               
               
                   
                 18 
                   
                   
                 820 
                 5 
                 25 
                 865 
                 5 
                   
                 3.9 
               
               
                 DC_1A-18A- 
                  1 
                 IMD5 
                   |3*f B1  − 2*f n78 | 
                 1970 
                 5 
                 25 
                 2160 
                 5 
                 0.6 
                 N/A 
               
               
                 28A_n78A 
                 n78 
                   
                   
                 3352 
                 10 
                 52 
                 3352 
                 10 
               
               
                   
                 28 
                   
                   
                 739 
                 5 
                 25 
                 794 
                 5 
                   
                 4.2 
               
               
                   
                 18 
                 IMD3 
                 |2*f B18  − f B78 | 
                 819 
                 5 
                 25 
                 864 
                 5 
                 1.8 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3758 
                 10 
                 52 
                 3758 
                 10 
               
               
                   
                  1 
                   
                   
                 1930 
                 5 
                 25 
                 2120 
                 5 
                   
                 16.4  
               
               
                   
                 28 
                 IMD3 
                 |2*f B28  − f B78 | 
                 740 
                 5 
                 25 
                 795 
                 5 
                 1.5 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3630 
                 10 
                 52 
                 3630 
                 10 
               
               
                   
                  1 
                   
                   
                 1960 
                 5 
                 25 
                 2150 
                 5 
                   
                 15.7  
               
               
                   
                 28 
                 IMD5 
                 |4*f B28  − f n78 |     
                 723 
                 5 
                 25 
                 778 
                 5 
                 0.5 
                 N/A 
               
               
                   
                 n78 
                   
                   
                 3756 
                 10 
                 52 
                 3756 
                 10 
               
               
                   
                 18 
                   
                   
                 819 
                 5 
                 25 
                 864 
                 5 
                   
                 3.8 
               
               
                   
               
            
           
         
       
     
     The test setup and MSD levels are defined in the MSD requirements of TR 37.863-02-01 and TS 38.101-3. 
     The above description can be realized by hardware. 
       FIG. 10  is a block diagram illustrating a wireless communication system in which a disclosure of the present specification is implemented. 
     The base station  200  includes a processor  210 , a memory  220 , and a radio frequency (RF) unit  230 . The memory  220  is connected with the processor  210  to store various pieces of information for driving the processor  210 . The RF unit  230  is connected with the processor  210  to transmit and/or receive a radio signal. The processor  210  implements a function, a process, and/or a method which are proposed. In the aforementioned embodiment, the operation of the base station may be implemented by the processor  210 . 
     UE  100  includes a processor  110 , a memory  120 , and an RF unit  130 . The memory  120  is connected with the processor  110  to store various pieces of information for driving the processor  110 . The RF unit  130  is connected with the processor  110  to transmit and/or receive the radio signal. The processor  110  implements a function, a process, and/or a method which are proposed. 
     The processor may include an application-specific integrated circuit (ASIC), another chip set, a logic circuit and/or a data processing apparatus. The memory may include a read-only memory (ROM), a random access memory (RAM), a flash memory, a memory card, a storage medium, and/or other storage device. The RF unit may include a baseband circuit for processing the radio signal. When the embodiment is implemented by software, the aforementioned technique may be implemented by a module (a process, a function, and the like) that performs the aforementioned function. The module may be stored in the memory and executed by the processor. The memory may be positioned inside or outside the processor and connected with the processor by various well-known means. 
     In the aforementioned exemplary system, methods have been described based on flowcharts as a series of steps or blocks, but the methods are not limited to the order of the steps of the present invention and any step may occur in a step or an order different from or simultaneously as the aforementioned step or order. Further, it can be appreciated by those skilled in the art that steps shown in the flowcharts are not exclusive and other steps may be included or one or more steps do not influence the scope of the present invention and may be deleted.