Patent Publication Number: US-2023164743-A1

Title: Paging opportunity monitoring

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 16/796,750, filed Feb. 20, 2020 (now U.S. Pat. No. 11,516,770), entitled “PAGING OPPORTUNITY MONITORING,” which claims priority to U.S. Provisional Patent Application No. 62/809,510, filed on Feb. 22, 2019, entitled “TYPE-2 PHYSICAL DOWNLINK CONTROL CHANNEL (PDCCH) MONITORING,” and to U.S. Provisional Patent Application No. 62/830,282, filed on Apr. 5, 2019, entitled “PAGING OPPORTUNITY MONITORING,” and assigned to the assignee hereof. The disclosure of the prior applications are considered part of and are incorporated by reference in this patent application. 
    
    
     TECHNICAL FIELD 
     Aspects of the present disclosure generally relate to wireless communication, and more particularly to techniques and apparatuses for paging opportunity monitoring. 
     DESCRIPTION OF THE RELATED TECHNOLOGY 
     Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth, transmit power, etc.). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). 
     A wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) may communicate with a base station (BS) via the downlink (DL) and uplink (UL). The DL (or forward link) refers to the communication link from the BS to the UE, and the UL (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a NodeB, an LTE evolved nodeB (eNB), a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a New Radio (NR) BS, or a 5G NodeB. 
     The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. NR, which also may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDM with a cyclic prefix (CP) (CP-OFDM) on the DL, using CP-OFDM or SC-FDM (for example, also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the UL (or a combination thereof), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. 
     SUMMARY 
     The systems, methods and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein. 
     One innovative aspect of the subject matter described in this disclosure can be implemented in a method of wireless communication performed by an apparatus of a user equipment (UE). The method may include determining a plurality of resource locations associated with a Type-2 physical downlink control channel (PDCCH) transmission, where the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH; and monitoring the resource location to attempt to receive the Type-2 PDCCH. 
     In some aspects, a configuration of the Type-2 PDCCH defaults to a configuration of a Type-0 PDCCH. In some aspects, the Type-2 PDCCH is associated with a common core resource set with a Type-0 PDCCH. In some aspects, a monitoring period for the monitoring is defined based at least in part on at least one of: a timer expiration for the Type-2 PDCCH, a detection of one or more Type-0 PDCCH core resource sets (CORESETs) without a paging radio network temporary identifier (P-RNTI), or a detection of a Type-2 PDCCH CORESET with a P-RNTI. 
     In some aspects, the Type-2 PDCCH occurs during or after a downlink reference signal (DRS) transmission period. In some aspects, the method may include triggering a paging monitoring timer associated with a monitoring period for the monitoring based at least in part on detection of a DRS transmission. In some aspects, the method may include detecting the DRS transmission based at least in part on at least one of a synchronization signal block detection, a Type-0 PDCCH detection, or a Type-2 PDCCH detection. 
     In some aspects, a monitoring period for the monitoring is defined with respect to a Type-0 PDCCH transmission that is detectable based at least in part on at least one of a CORESET demodulation reference signal (DMRS) parameter, a remaining minimum system information (RMSI) allocation parameter, or a synchronization signal block (SSB) detection parameter. 
     In some aspects, a monitoring period for the monitoring is defined with respect to a Type-2 PDCCH transmission that is detectable based at least in part on at least one of a CORESET DMRS parameter, a paging radio network temporary identifier (P-RNTI) allocation parameter, or an SSB detection parameter. 
     In some aspects, the monitoring includes monitoring for the Type-2 PDCCH based at least in part on a quasi-co-location (QCL) relationship for the Type-2 PDCCH. In some aspects, the resource location associated with the Type-2 PDCCH is associated with a fixed mapping QCL relationship. In some aspects, the Type-2 PDCCH is associated with a same slot as a SSB or is offset from the SSB by a particular period of time. In some aspects, the particular period of time is defined based at least in part on a stored period or a configured period. 
     In some aspects, the resource location of the Type-2 PDCCH is associated with a particular set of candidate QCL locations. In some aspects, the particular set of candidate QCL locations are restricted based at least in part on at least one of a repetition period, an offset value, or a monitoring duration with respect to a detected synchronization signal block or a time value derived from a system timing. 
     In some aspects, the resource location of the Type-2 PDCCH is associated with a QCL location at each Type-2 PDCCH opportunity within a monitoring window associated with a monitoring period for the monitoring. In some aspects, a downlink control information (DCI) of the Type-2 PDCCH indicates a k0 parameter value identifying a subsequent allocation for a physical downlink shared channel (PDSCH) carrying a paging message. In some aspects, a Type-2 PDSCH is associated with a k0 parameter table identifying a set of k0 parameters for allocations after a DRS that satisfy at least one of an occupied channel bandwidth (OCB) requirement, a continuity requirement, or a capacity requirement. 
     In some aspects, the OCB requirement is at least one of a requirement for different wideband QCL allocations that are time-division multiplexed (TDM) or a requirement for different narrowband WCL allocations that are frequency division multiplexed (FDM). In some aspects, a monitoring period for the monitoring is associated with multiple paging occasion windows (POWs) in each DRS transmission period. 
     In some aspects, multiple of Type-2 PDCCH CORESET candidates are mapped within a single channel occupancy time (COT). In some aspects, each of multiple Type-2 PDSCH allocations for paging occupies symbols between two successive Type-2 PDCCH CORESET candidates. In some aspects, a DCI message in the Type-2 PDCCH or a Type-2 PDCCH allocation includes an indicator of whether additional Type-2 PDCCH allocations with a same QCL parameter are to be provided and a location of the additional Type-2 PDCCH allocations. 
     In some aspects, the Type-2 PDCCH is associated with a telescoping Type-2 PDCCH CORESET map and a mapping is selected for COT paging compactness. In some aspects, a telescoping Type-2 PDCCH CORESET map refers to a set of Type-2 PDCCH CORESET candidates with a same QCL parameter. In some aspects, a monitoring period for the monitoring is determined based at least in part on a paging COT continuity constraint associated with a paging capacity requirement. In some aspects, a monitoring period for the monitoring is defined based at least in part on an early termination timer. In some aspects, the UE is configured to stop monitoring QCL Type-2 PDCCH candidates when a termination timer has expired and after a signal associated with DRS. In some aspects, the monitoring includes detecting the Type-2 PDCCH without having detected a DRS. 
     In some aspects, the monitoring includes monitoring for the Type-2 PDCCH after a downlink reference signal is detected. In some aspects, the UE may end the monitoring for the Type-2 PDCCH based at least in part on not detecting paging before an expiration of an early termination timer or before an expiration of a paging monitoring window. In some aspects, the UE may determine a paging configuration. In some aspects, the UE may monitor based at least in part on the paging configuration. 
     In some aspects, the paging configuration is at least one of a DRS-conditional POW with a set of possible start and length indicator values, a DRS-conditional POW with a threshold periodicity, a paging window with a set of possible international mobile subscriber identity (IMSI) messages, a low-capacity paging configuration, or, a high-capacity paging configuration. In some aspects, determining the paging configuration includes determining the paging configuration based at least in part on at least one of a radio resource control (RRC) paging message, an RRC information element (IE), a DCI flag associated with a paging radio network temporary identifier (RNTI), a DCI flag associated with a system information radio network temporary identifier (SI-RNTI), or a physical broadcast channel (PBCH) flag. In some aspects, determining the paging configuration includes switching from a high-capacity paging configuration to a low-capacity paging configuration based at least in part on at least one of a timer expiration or a triggering message. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in a UE for wireless communication. The UE may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine a plurality of resource locations associated with a Type-2 PDCCH transmission, where the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH; and monitor the resource location to attempt to receive the Type-2 PDCCH. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to determine a plurality of resource locations associated with a Type-2 PDCCH transmission, where the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH; and monitor the resource location to attempt to receive the Type-2 PDCCH. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include means for determining a plurality of resource locations associated with a Type-2 PDCCH transmission, where the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH; and means for monitoring the resource location to attempt to receive the Type-2 PDCCH. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in a method of wireless communication, performed by an apparatus of a UE. The method may include receiving signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity; and monitoring, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start, the end, or the duration of the monitoring period. 
     In some aspects, the paging transmission is associated with a PDCCH. In some aspects, the resource location is at least one of a starting resource location for the monitoring period or a stopping resource location for the monitoring period. In some aspects, the signaling is at least one of a system information radio network temporary identifier (SI-RNTI)-scrambling of a downlink control information (DCI), a paging radio network temporary identifier (P-RNTI)-scrambling of a DCI, a DCI, a DCI explicitly carrying the signaling, a DCI implicitly indicating the signaling, a channel occupancy time start signal, or a channel occupancy time end signal. 
     In some aspects, the signaling includes at least one of a flag identifying whether paging is to be further monitored in the monitoring period, a bitmap indicating a set of UEs to which the signaling applies, a change to a DCI configuration, a starting time for monitoring for a paging DCI, a resource indication for monitoring for a paging DCI, a periodicity identifier for the paging transmission, a payload message, a paging message, or a SI-RNTI scrambling. In some aspects, the method may include receiving further signaling during monitoring of the monitoring period and selectively monitoring in accordance with the further signaling. In some aspects, selectively monitoring in accordance with the further signaling includes continuing to monitor based on the signaling indicating that further paging is to be transmitted. In some aspects, selectively monitoring in accordance with the further signaling includes ending monitoring based on the signaling indicating that further paging is not to be transmitted. 
     In some aspects, the further signaling is at least one of a SI-RNTI-scrambled DCI, a P-RNTI-scrambled DCI, a DCI, a physical signal, or a monitored signal. In some aspects, the monitoring period may be a single contiguous interval. In some aspects, the monitoring period may be a plurality of disjointed intervals. In some aspects receiving the signaling includes receiving signaling during the monitoring period. In some aspects, the method may include determining, based at least in part on the signaling identifying the resource location of the end of the monitoring period, that the paging transmission is not to occur at a time subsequent to receiving the signaling; and monitoring, during the monitoring period, for the paging transmission may include ending the monitoring period. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in a UE for wireless communication. The UE may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to receive signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity; and monitor, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start, the end, or the duration of the monitoring period. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to receive signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity; and monitor, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start, the end, or the duration of the monitoring period. 
     Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include means for receiving signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity; and means for monitoring, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start, the end, or the duration of the monitoring period. 
     Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification. 
     Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings and the claims. Note that the relative dimensions of the following figures may not be drawn to scale. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a block diagram conceptually illustrating an example of a wireless network. 
         FIG.  2    is a block diagram conceptually illustrating an example of a base station (BS) in communication with a user equipment (UE) in a wireless network. 
         FIGS.  3  and  4    are diagrams illustrating examples of monitoring a floating Type-2 physical downlink control channel (PDCCH). 
         FIGS.  5  and  6    are diagrams illustrating examples of PDCCH candidates in a paging channel occupancy time (COT). 
         FIG.  7    is a diagram illustrating an example of monitoring both a floating Type-2 PDCCH and a fixed Type-2 PDCCH. 
         FIG.  8    is a diagram illustrating an example process performed, for example, by a UE. 
         FIG.  9    is a diagram illustrating an example of paging opportunity monitoring. 
         FIG.  10    is a diagram illustrating an example process performed, for example, by a UE. 
     
    
    
     Like reference numbers and designations in the various drawings indicate like elements. 
     DETAILED DESCRIPTION 
     The following description is directed to certain implementations for the purposes of describing the innovative aspects of this disclosure. However, a person having ordinary skill in the art will readily recognize that the teachings herein can be applied in a multitude of different ways. Some of the examples in this disclosure are based at least in part on wireless and wired local area network (LAN) communication according to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless standards, the IEEE 802.3 Ethernet standards, and the IEEE 1901 Powerline communication (PLC) standards. However, the described implementations may be implemented in any device, system or network that is capable of transmitting and receiving radio frequency signals according to any of the wireless communication standards, including any of the IEEE 802.11 standards, the Bluetooth® standard, code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), Global System for Mobile communications (GSM), GSM/General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), Terrestrial Trunked Radio (TETRA), Wideband-CDMA (W-CDMA), Evolution Data Optimized (EV-DO), 1×EV-DO, EV-DO Rev A, EV-DO Rev B, High Speed Packet Access (HSPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Evolved High Speed Packet Access (HSPA+), Long Term Evolution (LTE), AMPS, or other known signals that are used to communicate within a wireless, cellular or internet of things (IOT) network, such as a system utilizing 3G, 4G or 5G, or further implementations thereof, technology. 
     In New Radio (NR), a downlink reference signal (DRS) continuity requirement may be established. For example, a BS may continuously transmit a DRS in a single channel occupancy time (COT). To maintain continuity, the BS may multiplex remaining minimum system information (RMSI) and synchronization signal block (SSB) transmissions. For example, an RMSI physical downlink control channel (PDCCH) may be time division multiplexed with an SSB or an RMSI physical downlink shared channel (PDSCH) may be frequency division multiplexed (FDM) with an SSB. In this way, the BS may ensure a compact, continuous DRS. Further, the BS may transmit paging information and other system information (OSI) transmissions in a common COT with a DRS. 
     To achieve the continuous DRS requirement, the BS may transmit using a set of SSB candidates when the BS obtains access to transmission resources using, for example, a contention-based access procedure, such as a listen-before-talk (or listen-before-transmit, LBT) procedure. Further, to achieve the continuous DRS requirement, the UE may be enabled to monitor multiple paging occasion (PO) candidates of a paging occasion window (POW) at a fixed location or based at least in part on a flexible mapping of detected DRSs or known quasi-co location (QCL) relationships to floating or fixed PO candidate locations. Some aspects described herein provide for floating position monitoring and fixed position monitoring for UE or for paging opportunity monitoring. For example, a UE may determine a resource location for a Type-2 PDCCH, such as a floating Type-2 PDCCH or a fixed Type-2 PDCCH, and may monitor to attempt to receive the Type-2 PDCCH. As another example, a UE may receive signaling identifying a resource location and may monitor for a paging transmission during a monitoring occasion. In some implementations, the monitoring occasion may be determined based on the signaling. 
     Particular implementations of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. For example, the UE may enable the BS to satisfy the DRS continuity requirement, may enable an efficient utilization of network resources and may enable flexibility with regard to utilization of network resources. Moreover, the UE and the BS may enable increased network flexibility with regard to support by enabling different types of PDCCH configurations or different types of UE configurations to be deployed in a network, as described in more detail herein. Furthermore, by enabling a dynamically indicated starting condition, stopping condition, or duration for a monitoring period, the UE may reduce utilization of power resources relative to starting a monitoring period before paging is to be performed or relative to remaining in a monitoring period after further paging is not to be performed. Furthermore, back-to-back transmission of DRS and paging messages, enabled by increasing a quantity of paging candidates for the BS to select, enables the BS to limit shared spectrum utilization by aggregating the DRS, paging, or other signals into a single transmission. 
       FIG.  1    is a block diagram conceptually illustrating an example of a wireless network  100 . The wireless network  100  may be an LTE network or some other wireless network, such as a 5G or NR network. Wireless network  100  may include a number of BSs  110  (shown as BS  110   a , BS  110   b , BS  110   c , and BS  110   d ) and other network entities. A BS is an entity that communicates with user equipment (UEs) and also may be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB), an access point, or a transmit receive point (TRP). Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS, a BS subsystem serving this coverage area, or a combination thereof, depending on the context in which the term is used. 
     A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof. A macro cell may cover a relatively large geographic area (for example, several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (for example, a home) and may allow restricted access by UEs having association with the femto cell (for example, UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in  FIG.  1   , a BS  110   a  may be a macro BS for a macro cell  102   a , a BS  110   b  may be a pico BS for a pico cell  102   b , and a BS  110   c  may be a femto BS for a femto cell  102   c . A BS may support one or multiple (for example, three) cells. The terms “eNB”, “base station”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” may be used interchangeably herein. 
     In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some examples, the BSs may be interconnected to one another as well as to one or more other BSs or network nodes (not shown) in the wireless network  100  through various types of backhaul interfaces, such as a direct physical connection, a virtual network, or a combination thereof using any suitable transport network. 
     Wireless network  100  also may include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (for example, a BS or a UE) and send a transmission of the data to a downstream station (for example, a UE or a BS). A relay station also may be a UE that can relay transmissions for other UEs. In the example shown in  FIG.  1   , a relay station  110   d  may communicate with a macro BS  110   a  and a UE  120   d  in order to facilitate communication between the macro BS  110   a  and the UE  120   d . A relay station also may be referred to as a relay BS, a relay base station, a relay, etc. 
     A wireless network  100  may be a heterogeneous network that includes BSs of different types, for example, macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network  100 . For example, macro BSs may have a high transmit power level (for example, 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (for example, 0.1 to 2 Watts). 
     A network controller  130  may couple to a set of BSs and may provide coordination and control for these BSs. The network controller  130  may communicate with the BSs via a backhaul. The BSs also may communicate with one another, for example, directly or indirectly via a wireless or wireline backhaul. 
     UEs  120  (for example, 120a, 120b, 120c) may be dispersed throughout the wireless network  100 , and each UE may be stationary or mobile. A UE also may be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A UE may be a cellular phone (for example, a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (for example, smart ring, smart bracelet)), an entertainment device (for example, a music or video device, or a satellite radio), a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium. 
     Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (for example, remote device), or some other entity. A wireless node may provide, for example, connectivity for or to a network (for example, a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet-of-Things (IoT) devices or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered a Customer Premises Equipment (CPE). A UE  120  may be included inside a housing that houses components of the UE  120 , such as processor components, memory components, similar components, or a combination thereof. 
     In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular RAT and may operate on one or more frequencies. A RAT also may be referred to as a radio technology, an air interface, etc. A frequency also may be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed. 
     In some examples, access to the air interface may be scheduled, where a scheduling entity (for example, a base station) allocates resources for communication among some or all devices and equipment within the scheduling entity&#39;s service area or cell. Within the present disclosure, as discussed further below, the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity. 
     Base stations are not the only entities that may function as a scheduling entity. That is, in some examples, a UE may function as a scheduling entity, scheduling resources for one or more subordinate entities (for example, one or more other UEs). In this example, the UE is functioning as a scheduling entity, and other UEs utilize resources scheduled by the UE for wireless communication. A UE may function as a scheduling entity in a peer-to-peer (P2P) network, in a mesh network, or another type of network. In a mesh network example, UEs may optionally communicate directly with one another in addition to communicating with the scheduling entity. 
     Thus, in a wireless communication network with a scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, and a mesh configuration, a scheduling entity and one or more subordinate entities may communicate utilizing the scheduled resources. 
     In some aspects, two or more UEs  120  (for example, shown as a UE  120   a  and a UE  120   e ) may communicate directly using one or more sidelink channels (for example, without using a base station  110  as an intermediary to communicate with one another). For example, the UEs  120  may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or similar protocol), a mesh network, or similar networks, or combinations thereof. In this case, the UEs  120  may perform scheduling operations, resource selection operations, as well as other operations described elsewhere herein as being performed by the base station  110 . 
       FIG.  2    is a block diagram conceptually illustrating an example  200  of a base station  110  in communication with a UE  120 . In some aspects, the base station  110  and the UE  120  may respectively be one of the base stations and one of the UEs in the wireless network  100  of  FIG.  1   . The base station  110  may be equipped with T antennas  234   a  through  234   t , and the UE  120  may be equipped with R antennas  252   a  through  252   r , where in general T≥1 and R≥1. 
     At the base station  110 , a transmit processor  220  may receive data from a data source  212  for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (for example, encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. A transmit processor  220  also may process system information (for example, for semi-static resource partitioning information (SRPI), etc.) and control information (for example, CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. The transmit processor  220  also may generate reference symbols for reference signals (for example, the cell-specific reference signal (CRS)) and synchronization signals (for example, the primary synchronization signal (PSS) and secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor  230  may perform spatial processing (for example, precoding) on the data symbols, the control symbols, the overhead symbols, or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs)  232   a  through  232   t . Each modulator  232  may process a respective output symbol stream (for example, for OFDM, etc.) to obtain an output sample stream. Each modulator  232  may further process (for example, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators  232   a  through  232   t  may be transmitted via T antennas  234   a  through  234   t , respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information. 
     At the UE  120 , antennas  252   a  through  252   r  may receive the downlink signals from the base station  110  or other base stations and may provide received signals to demodulators (DEMODs)  254   a  through  254   r , respectively. Each demodulator  254  may condition (for example, filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator  254  may further process the input samples (for example, for OFDM, etc.) to obtain received symbols. A MIMO detector  256  may obtain received symbols from all R demodulators  254   a  through  254   r , perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor  258  may process (for example, demodulate and decode) the detected symbols, provide decoded data for UE  120  to a data sink  260 , and provide decoded control information and system information to a controller or processor (controller/processor)  280 . A channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of the UE  120  may be included in a housing. 
     On the uplink, at the UE  120 , a transmit processor  264  may receive and process data from a data source  262  and control information (for example, for reports including RSRP, RSSI, RSRQ, CQI, etc.) from a controller/processor  280 . The transmit processor  264  also may generate reference symbols for one or more reference signals. The symbols from the transmit processor  264  may be precoded by a TX MIMO processor  266  if applicable, further processed by the modulators  254   a  through  254   r  (for example, for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station  110 . At the base station  110 , the uplink signals from the UE  120  and other UEs may be received by the antennas  234 , processed by the demodulators  232 , detected by a MIMO detector  236  if applicable, and further processed by a receive processor  238  to obtain decoded data and control information sent by the UE  120 . The receive processor  238  may provide the decoded data to a data sink  239  and the decoded control information to a controller or processor (controller/processor)  240 . The base station  110  may include a communication unit  244  and communicate to a network controller  130  via the communication unit  244 . The network controller  130  may include a communication unit  294 , a controller or processor (controller/processor)  290 , and a memory  292 . 
     While subsequent paragraphs may refer to Type-2 PDCCH, paging allocations and corresponding monitoring windows, PDSCHs, and candidates, it will be understood that the same descriptions apply to other broadcast allocations, such as Type-0A PDCCH and OSI (Other System Information) allocations. 
     The controller/processor  240  of the base station  110 , the controller/processor  280  of the UE  120 , or any other component(s) of  FIG.  2    may perform one or more techniques associated with Type-2 PDCCH monitoring, as described in more detail elsewhere herein. For example, the controller/processor  240  of the base station  110 , the controller/processor  280  of the UE  120 , or any other component(s) (or combinations of components) of  FIG.  2    may perform or direct operations of, for example, a process  800  of  FIG.  8   , process  1000  of  FIG.  10   , or other processes as described herein. The memories  242  and  282  may store data and program codes for the base station  110  and the UE  120 , respectively. A scheduler  246  may schedule UEs for data transmission on the downlink, the uplink, or a combination thereof. 
     The stored program codes, when executed by the controller/processor  280  or other processors and modules at the UE  120 , may cause the UE  120  to perform operations described with respect to the process  800  of  FIG.  8   , process  1000  of  FIG.  10   , or other processes as described herein. A scheduler  246  may schedule UEs for data transmission on the downlink, the uplink, or a combination thereof. 
     In some aspects, UE  120  may include means for determining a plurality of resource locations associated with a Type-2 PDCCH transmission, and the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH; means for monitoring the resource location to attempt to receive the Type-2 PDCCH; or combinations thereof. In some aspects, UE  120  may include means for receiving signaling identifying a resource location of at least one of a start or an end of a monitoring period for a paging opportunity, means for monitoring, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start or the end of the monitoring period, or combinations thereof. In some aspects, such means may include one or more components of the UE  120  described in connection with  FIG.  2   . 
     While blocks in  FIG.  2    are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components. For example, the functions described with respect to the transmit processor  264 , the receive processor  258 , the TX MIMO processor  266 , or another processor may be performed by or under the control of controller/processor  280 . 
       FIG.  3    is a diagram illustrating an example  300  of monitoring a floating Type-2 PDCCH. As shown in  FIG.  3   , example  300  may include a BS  110  and a UE  120 . 
     As shown in  FIG.  3   , and by reference number  310 , the UE  120  may determine a resource location for a Type-2 PDCCH transmission. For example, when the UE  120  is to monitor for a floating Type-2 PDCCH, the UE  120  may determine, based at least in part on stored configuration information, that the Type-2 PDCCH is defaulted to a Type-0 PDCCH. In this case, the Type-2 PDCCH may be associated with a same control resource set (CORESET) as the Type-0 PDCCH and may include a paging radio network temporary identifier (P-RNTI) allocation in each Type-2 PDCCH. In some aspects, the UE  120  may determine a stopping condition for ending a monitoring period during which the UE  120  is to monitor for the Type-2 PDCCH. For example, the UE  120  may determine to stop monitoring for the Type-2 PDCCH after a timer expiration, after detection of a Type-0 PDCCH, such as a Type-0 PDCCH that includes an SI-RNTI (system information radio network temporary identifier) scrambling or a Type-2 PDCCH includes a P-RNTI scrambling. In this case, the UE  120  may determine the stopping condition based at least in part on receipt of, for example, a paging DCI and a stop flag aggregated into a single control and/or data message. 
     A PDCCH candidate location may be classified as floating if at least one parameter (which may include timing) is dependent on detection of a prior signal (e.g. QCL mapping is dependent on a time of a DRS or an SSB with the same QCL). A PDCCH candidate location may be classified as fixed if parameters (which may include timing) can be determined from information already known or configured for the UE. For example, the time of a candidate quasi co-located with a particular SSB can be determined from a cell common (system information block (SIB) or master information block (MIB)) configuration, rather than requiring information of an immediately prior DRS transmission. In floating PDCCH monitoring, the UE  120  may receive triggering information identifying a time or a configuration for monitoring. In fixed PDCCH monitoring, the UE  120  may monitor without having received triggering information identifying the time or the configuration for monitoring when triggered to monitor. 
     In some aspects, the UE  120  may determine a resource location for monitoring a floating Type-2 PDCCH candidate based at least in part on a quasi-co-location (QCL) relationship between the Type-2 PDCCH and a very recently detected DRS transmission. For example, the Type-2 PDCCH may be associated with a fixed mapping relationship in which the Type-2 PDCCH is associated with a same slot as an SSB transmission. In this case, for a floating Type-2 PDCCH, the floating Type-2 PDCCH may be a triggered floating Type-2 PDCCH when monitoring starts immediately after receiving the DRS transmission. In contrast, a fixed Type-2 PDCCH candidate may be a configured fixed Type-2 PDCCH when monitoring starts on a periodic basis using QCL relationships derived from a past transmission (which may be a downlink reference signal (DRS) or another broadcast or unicast signal). As shown by reference numbers  320  and  330 , the BS  110  may transmit, and the UE  120  may monitor to receive the Type-2 PDCCH candidates, which may be time division multiplexed (TDM) with a set of SSB candidates. In some aspects, the BS  110  may forgo transmission of one or more SSB candidates. Even if some SSB candidates are not transmitted in a particular DRS occasion, the UE  120  may still monitor paging candidates based on QCL relationships with the SSB candidates with which the UE  120  is configured from prior transmissions. In some aspects, configured windows may be used for monitoring both fixed and floating Type-2 PDCCH candidates. For monitoring of floating candidates, the UE  120  may receive a start signal to trigger the monitoring. 
       FIG.  4    is a diagram illustrating an example  400  of monitoring a floating Type-2 PDCCH based on DRS triggering. As shown in  FIG.  4   , the example  400  may include a BS  110  and a UE  120 . Although some aspects are described in terms of floating Type-2 PDCCH being based on an immediately prior DRS transmission, other aspects may have fixed Type-2 PDCCH monitoring based on configured monitoring windows, as described above. In each case, Type-2 PDCCH may have a plurality of PDCCH candidates quasi co-located with SSBs, and the UE  120  may monitor in a window (or a plurality of windows), which may repeat. 
     As shown in  FIG.  4   , and by reference number  410 , the UE  120  may determine a resource location for a Type-2 PDCCH transmission. For example, when the UE  120  is to monitor for a floating Type-2 PDCCH, the UE  120  may determine, based at least in part on stored configuration information, that the Type-2 PDCCH is to occur with or after one or more Type-0 PDCCHs of a DRS transmission period. In this case, the UE  120  may determine that the Type-2 PDCCH is to occur with, or after the DRS transmission period, during the DRS transmission period. 
     As further shown in  FIG.  4   , and by reference numbers  420  and  430 , the BS  110  may transmit, and the UE  120  may monitor to receive the Type-2 PDCCHs, which may be time division multiplexed (TDM) with a set of SSB candidates. In some aspects, the UE  120  may activate a paging monitoring timer to determine a monitoring period for attempting to receive a Type-2 PDCCH. For example, when a DRS is detected, the UE  120  may trigger a timer countdown, and may attempt to detect the Type-2 PDCCH before expiration of the timer countdown. In some aspects, the BS  110  may transmit a Type-2 PDCCH after a Type-0 PDCCH. Alternatively, the BS  110  may transmit the Type-2 PDCCH without having transmitted the Type-0 PDCCH. 
     In some aspects, the UE  120  may detect a DRS transmission that triggers a monitoring period for attempting to receive the Type-2 PDCCH based at least in part on detecting another transmission. For example, the UE  120  may detect an SSB transmission, and may detect the DRS transmission based at least in part on detecting the SSB transmission. Additionally, or alternatively, the UE  120  may detect a Type-0 PDCCH transmission and may detect the DRS transmission based at least in part on detecting the Type-0 PDCCH transmission. 
     In some aspects, the UE  120  may detect the Type-0 PDCCH transmission based at least in part on another parameter. For example, the UE  120  may detect the Type-0 PDCCH transmission based at least in part on a parameter relating to a CORESET demodulation reference signal (DMRS), such as whether a signal to interference noise ratio (SINR) is greater than or equal to 6 decibels (dB). Additionally, or alternatively, the UE  120  may detect the Type-0 PDCCH based at least in part on a remaining minimum system information (RMSI) allocation, such as a system information RNTI (SI-RNTI) or a non-P-RNTI transmission, which the UE  120  may use to validate a system information RNTI (SI-RNTI). Additionally, or alternatively, the UE  120  may detect the Type-0 PDCCH based at least in part on a P-RNTI allocation, which the UE  120  may use to validate a P-RNTI cyclic redundancy check (CRC); a detection of an SSB transmission. Additionally, or alternatively, the UE  120  may detect the Type-0 PDCCH based at least in part on a configured monitoring candidate location, such as based at least in part on a serving DRS measurement timing configuration (DMTC), which the UE  120  may use for cell camping evaluation. 
     In some aspects, the UE  120  may determine a resource location for receiving a floating Type-2 PDCCH based at least in part on a quasi-co-location (QCL) relationship between the Type-2 PDCCH and a detected DRS transmission. For example, the Type-2 PDCCH may be associated with a fixed mapping relationship in which the Type-2 PDCCH is associated with a fixed time offset or a configured time offset relative to an SSB transmission. Additionally, or alternatively, the UE  120  may monitor a selected subset of QCL locations that are restricted in accordance with a repetition period parameter, an offset parameter, or a monitoring duration parameter and are determined based at least in part on an SSB transmission or with respect to an absolute time value. In this way, by monitoring multiple candidate QCL locations, the UE  120  enables different paging capacities with a floating Type-2 PDCCH and accounts for COT location uncertainty in a shared medium. In some aspects, the UE  120  may monitor all Type-2 PDCCH opportunities, such as those which occur within a monitoring period defined with respect to a paging monitoring timer, thereby improving flexibility of paging configurations. In some cases, the UE  120  may monitor Type-2 PDCCH opportunities without information identifying associated QCL relationships. 
     In some aspects, the UE  120  may determine, based at least in part on stored information, a set of fixed PO candidates, such as multiple PO candidates in each DRX cycle. In this case, the UE  120  may receive paging signals associated with the set of fixed PO candidates in a different COT or in a same COT as a DRS. For example, the UE  120  may receive paging signals associated with the set of fixed PO candidates in a single continuous COT using a QCL relationship determined based at least in part on an occurrence of a cyclic wraparound. In this case, the UE  120  may be provisioned with one or more POWs in each DRS in which to monitor for the set of fixed PO candidates of the single continuous COT. 
       FIG.  5    is a diagram illustrating an example  500  of PDCCH candidates in a paging channel occupancy time (COT). As shown in  FIG.  5   , example  500  includes a BS  110  and a UE  120 . 
     As further shown in  FIG.  5   , and by reference number  510 , the UE  120  may determine a resource location for a Type-2 PDCCH transmission. For example, when the UE  120  is to monitor for a floating Type-2 PDCCH or a fixed Type-2 PDCCH, the UE  120  may map Type-2 PDCCH CORESETs compactly to a single slot, to a set of contiguous slots, or to a set of disjointed slots within a single COT. In this case, as shown by reference numbers  520  and  530 , the BS  110  may transmit, and the UE  120  may monitor to receive the Type-2 PDCCHs and subsequent paging PDSCHs. 
     In some aspects, a resource allocation for the BS  110  and the UE  120  may lack a set of physical resource blocks in an SSB slot for allocation to a PDSCH that conveys a paging message. In this case, the BS  110  may provide a Type-2 PDCCH DCI with a k0 parameter that points to a subsequent resource allocation in a common COT. For example, the BS  110  may provide RRC signaling to identify an allocation list and a configuration for the subsequent resource allocation for the PDSCH. Additionally, or alternatively, the UE  120  may use a default signaling table, thereby obviating a need for explicit signaling. For example, the default signaling table may include information identifying a set of k0 parameter options for allocations after a DRS. Further, the default signaling table may include information identifying a set of k0 parameter options for satisfying an occupied channel bandwidth (OCB) requirement, a continuity requirement, as described above, or a capacity requirement. In this case, the OCB requirement may relate to having different wideband QCL allocations, such as greater than 16 megahertz (MHz), that are time division multiplexed (TDM), may relate to having different narrowband QCL allocations that are frequency division multiplexed (FDM). In this way, the default signaling table may ensure that the OCB requirement is satisfied. 
     In some aspects, the UE  120  may be provisioned with a particular start and length indicator value table. For example, UE  120  may use a start and length indicator value table that allows allocations for PDSCHs to occur in a reverse order of Type-2 PDCCH occurrence. For example, as shown, a first Type-2 PDCCH, occurring before a listen-before-talk (LBT) occasion is complete, may correspond to a last paging PDSCH occasion. Similarly, a second Type-2 PDCCH may correspond to a second to last paging PDSCH occasion, and so on. In some aspects, when a CORESET fails for the LBT occasion, the BS  110  may drop corresponding PDSCHs of the LBT occasion. 
     In some aspects, the UE  120  may receive a P-RNTI scrambling, which indicates that additional P-RNTI allocations are to be expected. In some aspects, an indication may be transmitted in a control channel, such as via a Type-2 PDCCH, in a payload channel, such as via a PDSCH allocated by a Type-2 PDCCH message. In some aspects, the indication may include an indication of a location of an additional subsequent allocation that is to occur or may indicate to the UE  120  to select a subsequent P-RNTI allocation opportunity based at least in part on stored or internal configuration. In this case, such indications may inform the UE  120  of QCL relationships between Type-2 PDCCH candidates to monitor. 
     In some aspects, the UE  120  may be configured to ignore a subset of future Type-2 PDCCH candidate occasions in the monitoring window, when detecting the successful reception of a current Type-2 PDCCH candidate. In this case, the UE  120  may still continue monitoring subsequent Type-2 PDCCH candidates that satisfy one or more configured criteria, such as not being subject to a known PDSCH allocation or being subject to acquired information to expect the reception of subsequent Type-2 PDCCH candidate. 
       FIG.  6    is a diagram illustrating an example  600  of PDCCH candidates in a paging COT. As shown in  FIG.  6   , the example  600  may include a BS  110  and a UE  120 . 
     As further shown in  FIG.  6   , and by reference number  610 , the UE  120  may determine a resource location for a Type-2 PDCCH transmission associated with a telescoping Type-2 CORESET map. In this case, the BS  110  may select a map, of a set of candidate maps, based at least in part on a compactness criterion for a paging COT. For example, when the UE  120  is to monitor for a floating Type-2 PDCCH or a fixed Type-2 PDCCH, the BS  110  may map Type-2 PDCCH CORESETs compactly to a subsequent Type-2 PDSCH. In this case, as shown by reference numbers  620  and  630 , the BS  110  may transmit, and the UE  120  may monitor to receive the Type-2 PDCCHs and subsequent Type-2 PDSCHs. 
     In some aspects, the BS  110  may transmit Type-2 PDCCH candidates in a paging COT based at least in part on a paging capacity criterion for the paging COT and to satisfy a continuity constraint for the paging COT. In this case, the UE  120  may lack QCL relationship-based information identifying which Type-2 PDCCH occasion the BS  110  will use for transmission. As a result, in some aspects, the UE  120  may monitor all possible Type-2 PDCCH occasions to receive the Type-2 PDCCH candidates from the BS  110 . 
       FIG.  7    is a diagram illustrating an example  700  of monitoring both a floating Type-2 PDCCH and a fixed Type-2 PDCCH. As shown in  FIG.  7   , the example  700  includes a BS  110  and a UE  120 . 
     As further shown in  FIG.  7   , and by reference number  710 , the UE  120  may determine a resource location for a Type-2 PDCCH transmission. In this case, the UE  120  may be configured to detect the Type-2 PDCCH without having detected a DRS. In some aspects, the UE  120  may determine to monitor for a Type-2 PDCCH after a DRS is detected in accordance with an early termination timer. Additionally, or alternatively, the UE  120  may determine to monitor for the Type-2 PDCCH during an entirety of a POW. As shown by reference numbers  620  and  630 , the BS  110  may transmit, and the UE  120  may monitor to receive the Type-2 PDCCHs and subsequent Type-2 PDSCHs. 
     In some aspects, as shown in Case I, when a paging PDSCH is received after a DRS, the UE  120  may monitor for a particular period of time after the DRS to receive Type-2 PDCCHs. In this case, the UE  120  may terminate monitoring at the end of an early termination timer in both a first sub-scenario (i.e., where the UE  120  does not condition monitoring on detecting a DRS), which may be termed DRS-unaware, and in a second sub-scenario (i.e., where the UE  120  does condition monitoring on detecting a DRS), which may be termed DRS-aware. In some aspects, the UE  120  may enable an early termination timer immediately after a paging DCI is detected to enable termination of monitoring at the end of the early termination timer. 
     In contrast, as shown in Case II, when no paging is received after a DRS, a DRS-aware UE  120  may terminate at expiration of the early termination timer, but a DRS-unaware UE  120  may not terminate until an end of a POW. In this way, the UE  120  may be provisioned to accommodate multiple different use cases. In some aspects, the BS  110  may signal an absence of paging using a DRS, and the UE  120  may terminate monitoring for paging based at least in part on receiving the DRS, thereby saving power relative to waiting until expiration of an early termination timer to terminate monitoring for paging. 
     In some aspects, such as when the UE  120  is provisioned with multiple paging configurations, the UE  120  may determine one of the multiple paging configurations to use for determining a monitoring period for detecting a Type-2 PDCCH, or a subsequent PDSCH. For example, the UE  120  may be configured with a DRS-conditional POW, a limited start and length indicator flexibility paging configuration, a high periodicity paging configuration, or a low-capacity paging configuration. In this case, the low-capacity paging configuration may enable less than a threshold, such as less than three, international mobile subscriber identity (IMSI) identities in the paging message. Additionally, or alternatively, the UE  120  may be configured with a high-capacity paging configuration that enables greater than or equal to a threshold quantity of, for example, IMSI messages. In some aspects, the UE  120  may switch from the low-capacity paging configuration to the high-capacity paging configuration, as described herein. For example, the UE  120  may switch between the multiple paging configurations based at least in part on a radio resource control (RRC) paging message, an RRC information element (IE) message, a DCI flag of a P-RNTI, a DCI flag of an SI-RNTI, or a flag of a physical broadcast channel (PBCH). In this case, the UE  120  may fall back from the high-capacity paging configuration to the low-capacity paging configuration based at least in part on expiration of a timer, receipt of a triggering message, such as an RRC message or a DCI flag. 
       FIG.  8    is a diagram illustrating an example process  800  performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process  800  is an example where a UE, such as the UE  120 , performs operations associated with Type-2 PDCCH monitoring. 
     As shown in  FIG.  8   , in some aspects, process  800  may include determining a plurality of resource locations associated with a Type-2 PDCCH transmission and the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH (block  810 ). For example, the UE (using receive processor  258 , transmit processor  264 , controller/processor  280 , or memory  282 ) may determine a plurality of resource locations associated with a Type-2 PDCCH transmission and the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH, as described above. In some aspects, the Type-2 PDCCH is a floating Type-2 PDCCH or a fixed Type-2 PDCCH. 
     As further shown in  FIG.  8   , in some aspects, process  800  may include monitoring the plurality of resource locations to attempt to receive the Type-2 PDCCH (block  820 ). For example, the UE (using receive processor  258 , transmit processor  264 , controller/processor  280 , or memory  282 ) may monitor the plurality of resource locations to attempt to receive the Type-2 PDCCH, as described above. 
     Process  800  may include additional aspects, such as any single implementation or any combination of aspects described below or in connection with one or more other processes described elsewhere herein. 
     In a first aspect, a configuration of the Type-2 PDCCH defaults to a configuration of a Type-0 PDCCH. In a second aspect, alone or in combination with the first aspect, the Type-2 PDCCH is associated with a common core resource set with a Type-0 PDCCH. In a third aspect, alone or in combination with one or more of the first and second aspects, a monitoring period for the monitoring is defined based at least in part on at least one of: a timer expiration for the Type-2 PDCCH, a detection of one or more Type-0 PDCCH CORESETs without a P-RNTI, or a detection of a Type-2 PDCCH CORESET with a P-RNTI. 
     In a fourth aspect, alone or in combination with one or more of the first through third aspects, the Type-2 PDCCH occurs during or after a DRS transmission period. In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the UE is configured to trigger a paging monitoring timer associated with a monitoring period for the monitoring based at least in part on detection of a DRS transmission. In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the UE is configured to detect the DRS transmission based at least in part on at least one of a synchronization signal block detection, a Type-0 PDCCH detection, or a Type-2 PDCCH detection. 
     In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, a monitoring period for the monitoring is defined with respect to a Type-0 PDCCH transmission that is detectable based at least in part on at least one of a CORESET DMRS parameter, a RMSI allocation parameter, or a SSB detection parameter. 
     In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, a monitoring period for the monitoring is defined with respect to a Type-2 PDCCH transmission that is detectable based at least in part on at least one of a CORESET DMRS parameter, a P-RNTI allocation parameter, or, a SSB detection parameter. 
     In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the monitoring includes monitoring for the Type-2 PDCCH based at least in part on a QCL relationship for the Type-2 PDCCH. In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the plurality of resource locations associated with the Type-2 PDCCH is associated with a fixed mapping QCL relationship. In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the Type-2 PDCCH is associated with a same slot as a SSB or is offset from the SSB by a particular period of time. In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the particular period of time is defined based at least in part on a stored period or a configured period. 
     In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the plurality of resource locations of the Type-2 PDCCH is associated with a particular set of candidate QCL locations. In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the particular set of candidate QCL locations are restricted based at least in part on at least one of a repetition period, an offset value, or a monitoring duration with respect to a detected synchronization signal block or a time value derived from a system timing. 
     In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the plurality of resource locations of the Type-2 PDCCH is associated with a QCL location at each Type-2 PDCCH opportunity within a monitoring window associated with a monitoring period for the monitoring. In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, a DCI of the Type-2 PDCCH indicates a k0 parameter value identifying a subsequent allocation for a PDSCH carrying a paging message. In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, a Type-2 PDSCH is associated with a k0 parameter table identifying a set of k0 parameters for allocations after a DRS that satisfy at least one of an OCB requirement, a continuity requirement, or a capacity requirement. 
     In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the OCB requirement is at least one of a requirement for different wideband QCL allocations that are TDM or a requirement for different narrowband WCL allocations that are FDM. In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, a monitoring period for the monitoring is associated with multiple POWs in each DRS transmission period. 
     In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, multiple of Type-2 PDCCH CORESET candidates are mapped within a single COT. In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, each of multiple Type-2 PDSCH allocations for paging occupies symbols between two successive Type-2 PDCCH CORESET candidates. In a twenty-second aspect, alone or in combination with one or more of the first through twenty-first aspects, a DCI message in the Type-2 PDCCH or a Type-2 PDCCH allocation includes an indicator of whether additional Type-2 PDCCH allocations with a same QCL parameter are to be provided and a location of the additional Type-2 PDCCH allocations. 
     In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, the Type-2 PDCCH is associated with a telescoping Type-2 PDCCH CORESET map and a mapping is selected for COT paging compactness. In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, a telescoping Type-2 PDCCH CORESET map refers to a set of Type-2 PDCCH CORESET candidates with a same QCL parameter. In a twenty-fifth aspect, alone or in combination with one or more of the first through twenty-fourth aspects, a monitoring period for the monitoring is determined based at least in part on a paging COT continuity constraint associated with a paging capacity requirement. In a twenty-sixth aspect, alone or in combination with one or more of the first through twenty-fifth aspects, a monitoring period for the monitoring is defined based at least in part on an early termination timer. In a twenty-seventh aspect, alone or in combination with one or more of the first through twenty-sixth aspects, the UE is configured to stop monitoring QCL Type-2 PDCCH candidates when a termination timer has expired and after a signal associated with DRS. In a twenty-eighth aspect, alone or in combination with one or more of the first through twenty-seventh aspects, the monitoring includes detecting the Type-2 PDCCH without (or regardless of) having detected a DRS. 
     In a twenty-ninth aspect, alone or in combination with one or more of the first through twenty-eighth aspects, the monitoring includes monitoring for the Type-2 PDCCH after a downlink reference signal is detected. In a thirty aspect, alone or in combination with one or more of the first through twenty-ninth aspects, the UE may end the monitoring for the Type-2 PDCCH based at least in part on not detecting paging before an expiration of an early termination timer or before an expiration of a paging monitoring window. In a thirty-first aspect, alone or in combination with one or more of the first through thirty aspects, the UE may determine a paging configuration. In a thirty-second aspect, alone or in combination with one or more of the first through thirty-first aspects, the UE may monitor based at least in part on the paging configuration. 
     In a thirty-third aspect, alone or in combination with one or more of the first through thirty-second aspects, the paging configuration is at least one of a DRS-conditional POW with a set of possible start and length indicator values, a DRS-conditional POW with a threshold periodicity, a paging window with a set of possible IMSI messages, a low-capacity paging configuration, or, a high-capacity paging configuration. In a thirty-fourth aspect, alone or in combination with one or more of the first through thirty-third aspects, determining the paging configuration includes determining the paging configuration based at least in part on at least one of a RRC paging message, an RRC IE, a DCI flag associated with a paging RNTI, a DCI flag associated with a SI-RNTI, or a PBCH flag. In a thirty-fifth aspect, alone or in combination with one or more of the first through thirty-fourth aspects, determining the paging configuration includes switching from a high-capacity paging configuration to a low-capacity paging configuration based at least in part on at least one of a timer expiration or a triggering message. In a thirty-sixth aspect, alone or in combination with one or more of the first through thirty-fifth aspects, the plurality of resource locations map to a single quasi-co-location parameter. In a thirty-seventh aspect, alone or in combination with one or more of the first through thirty-sixth aspects, an indicator identifies a selection of a location of an additional Type-2 PDCCH allocation of a set of pre-configured locations for monitoring for additional type-2 PDCCH allocations. 
     Although  FIG.  8    shows example blocks of process  800 , in some aspects, process  800  may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in  FIG.  8   . Additionally, or alternatively, two or more of the blocks of process  800  may be performed in parallel. 
       FIG.  9    is a diagram illustrating an example  900  of paging occasion monitoring. As shown in  FIG.  9   , the example  900  includes a BS  110  and a UE  120 . 
     As shown in  FIG.  9   , and by reference number  910 , the UE  120  may receive control signaling from the BS  110 . For example, the UE  120  may receive control signaling identifying a resource location, such as a start of a monitoring period for a paging occasion or an end to a monitoring period for a paging occasion. In this case, the UE  120  may lack a priori information identifying the start of the monitoring period or the end of the monitoring period before receiving the control signaling, or may be configured with a different start of the monitoring period or end of the monitoring period. In some aspects, the monitoring period may be a single continuous interval. In some aspects, the monitoring period may be multiple disjoint, or disjointed, intervals. 
     In some aspects, the control signaling may indicate a resource location for a paging opportunity start or a DRS monitoring window start. In some aspects, the UE  120  may receive control signaling identifying a start of a monitoring period, an end of a monitoring period, or a criterion for altering the monitoring period. In some implementations, the UE  120  may receive control signaling identifying the end of the monitoring period during the monitoring period itself. 
     In some aspects, the UE  120  may be triggered to start the monitoring period based on receiving a SI-RNTI scrambled DCI, a P-RNTI DCI, or another type of RNTI-scrambled DCI. Additionally, or alternatively, the UE  120  may be triggered to start the monitoring period based on receiving control signaling indicating a start of a COT or another type of physical signal. 
     In some aspects, the UE  120  may parse the control signaling to determine the monitoring period. For example, the UE  120  may determine that a lower layer signal, such as a DCI, includes a flag indicating that a paging message is to occur at a subsequent time or that a paging message is not to occur at a subsequent time. Additionally, or alternatively, the UE  120  may determine that a bitmap in the control signaling indicates that the control signaling applies to the UE  120  or one or more other UEs. Additionally, or alternatively, the UE  120  may determine a k0 parameter or a periodicity based on the control signaling. 
     In some aspects, the UE  120  may parse a payload of the control signaling to determine a monitoring period. For example, the UE  120  may receive RRC paging, a SIB message, or a paging message including an indicator of whether paging messages are to occur during a monitoring period. In some aspects, the UE  120  may receive a paging message and may determine not to monitor for subsequent paging during a threshold period of time. Alternatively, the UE  120  may receive the paging message or a P-RNTI DCI and may determine that an allocation for paging is to be received at a subsequent time. 
     As further shown in  FIG.  9   , and by reference number  920 , the UE  120  may determine a monitoring period for a paging opportunity. For example, the UE  120  may determine to start a monitoring period to monitor for paging at a current time or at a subsequent time based on the control signaling. Additionally, or alternatively, the UE  120  may determine to end a currently ongoing monitoring period at a current time or at a subsequent time based on the control signaling. In some aspects, the UE  120  may determine to continue monitoring until a stopping criterion is detected, such as an SI-RNTI based DCI detection occurring. 
     As further shown in  FIG.  9   , and by reference number  930 , the UE  120  may monitor during the monitoring period to attempt to receive the paging. For example, the UE  120  may monitor for paging during a particular period of time and may end monitoring for paging at a particular period of time determined based on the monitoring period. As an example, the UE  120  may receive an SI-RNTI DCI indicating that new paging is not to occur and may stop the monitoring period before a configured end to the monitoring period. As another example, the UE  120  may end the monitoring period after receiving a P-RNTI during the monitoring period that includes paging and an indication that further paging is not to occur. As another example, the UE  120  may end the monitoring period after detecting a CORESET type 0 in connection with an SI-RNTI DCI but not detecting a P-RNTI DCI. 
       FIG.  10    is a diagram illustrating an example process  1000  performed, for example, by a UE, in accordance with various aspects of the present disclosure. The example process  1000  shows where a UE, such as the UE  120 , performs operations associated with paging opportunity monitoring. 
     As shown in  FIG.  10   , in some aspects, process  1000  may include receiving signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity (block  1010 ). For example, the UE (using receive processor  258 , transmit processor  264 , controller/processor  280 , or memory  282 ) may receive signaling identifying a resource location of at least one of a start, an end, or a duration of a monitoring period for a paging opportunity. In some aspects, the UE may include a first interface for receiving the signaling. 
     As shown in  FIG.  10   , in some aspects, process  1000  may include monitoring, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start or the end of the monitoring period (block  1020 ). For example, the UE (using receive processor  258 , transmit processor  264 , controller/processor  280 , memory  282 ) may monitor, during the monitoring period, for a paging transmission associated with the paging opportunity based on the at least one of the start or the end of the monitoring period. In some aspects, the UE may include a second interface for monitoring for the paging transmission. 
     The process  1000  may include additional aspects, such as any single implementation or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein. 
     In a first aspect, the paging transmission is associated with a PDCCH. 
     In a second aspect, alone or in combination with the first aspect, the resource location is at least one of a starting resource location for the monitoring period or a stopping resource location for the monitoring period. 
     In a third aspect, alone or in combination with any one or more of the first and second aspects, the signaling is at least one of a system information radio network temporary identifier (SI-RNTI)-scrambling of a downlink control information (DCI), a paging radio network temporary identifier (P-RNTI)-scrambling of a DCI, a DCI, a DCI explicitly carrying the signaling, a DCI implicitly indicating the signaling, a channel occupancy time start signal, or a channel occupancy time end signal. 
     In a fourth aspect, alone or in combination with any one or more of the first through third aspects, the signaling includes at least one of a flag identifying whether paging is to be further monitored in the monitoring period, a bitmap indicating a set of UEs to which the signaling applies, a change to a DCI configuration, a starting time for monitoring for a paging DCI, a resource indication for monitoring for a paging DCI, a periodicity identifier for the paging transmission, a payload message, a paging message, or a SI-RNTI scrambling. 
     In a fifth aspect, alone or in combination with any one or more of the first through fourth aspects, the process  1000  may include receiving further signaling during monitoring of the monitoring period and selectively monitoring in accordance with the further signaling. 
     In a sixth aspect, alone or in combination with any one or more of the first through fifth aspects, selectively monitoring in accordance with the further signaling includes continuing to monitor based on the signaling indicating that further paging is to be transmitted. 
     In a seventh aspect, alone or in combination with any one or more of the first through sixth aspects, the further signaling is at least one of a SI-RNTI-scrambled DCI, a P-RNTI-scrambled DCI, a DCI, a physical signal, or a monitored signal. 
     In an eighth aspect, alone or in combination with any one or more of the first through seventh aspects, the monitoring period may be a single contiguous interval. 
     In a ninth aspect, alone or in combination with any one or more of the first through eighth aspects, the monitoring period may be a plurality of disjointed intervals. 
     In a tenth aspect, alone or in combination with any one or more of the first through ninth aspects, receiving the signaling includes receiving signaling during the monitoring period. 
     In an eleventh aspect, alone or in combination with any one or more of the first through tenth aspects, process  1000  includes determining, based at least in part on the signaling identifying the resource location of the end of the monitoring period, that the paging reception is not to occur at a time subsequent to receiving the signaling; and monitoring, during the monitoring period, for the paging transmission includes ending the monitoring period. 
     In a twelfth aspect, alone or in combination with any one or more of the first through eleventh aspects, selectively monitoring in accordance with the further signaling includes ending monitoring based on the signaling indicating that further paging is not to be monitored. 
     In a thirteenth aspect, alone or in combination with any one or more of the first through twelfth aspects, the monitoring period is a single interval. 
     Although  FIG.  10    shows example blocks of the process  1000 , in some aspects, the process  1000  may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in  FIG.  10   . Additionally, or alternatively, two or more of the blocks of the process  1000  may be performed in parallel. 
     The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects. 
     As used herein, the term “component” is intended to be broadly construed as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, or a combination of hardware and software. 
     As used herein, satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, or not equal to the threshold. 
     As used herein, a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c. 
     The various illustrative logics, logical blocks, modules, circuits and algorithm processes described in connection with the aspects disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. The interchangeability of hardware and software has been described generally, in terms of functionality, and illustrated in the various illustrative components, blocks, modules, circuits and processes described above. Whether such functionality is implemented in hardware or software depends upon the particular application and design constraints imposed on the overall system. 
     The hardware and data processing apparatus used to implement the various illustrative logics, logical blocks, modules and circuits described in connection with the aspects disclosed herein may be implemented or performed with a general purpose single- or multi-chip processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, or, any conventional processor, controller, microcontroller, or state machine. A processor also may be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. In some aspects, particular processes and methods may be performed by circuitry that is specific to a given function. 
     In one or more aspects, the functions described may be implemented in hardware, digital electronic circuitry, computer software, firmware, including the structures disclosed in this specification and their structural equivalents thereof, or in any combination thereof. Aspects of the subject matter described in this specification also can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions, encoded on a computer storage media for execution by, or to control the operation of, data processing apparatus. 
     If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. The processes of a method or algorithm disclosed herein may be implemented in a processor-executable software module which may reside on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program from one place to another. A storage media may be any available media that may be accessed by a computer. By way of example, and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer. Also, any connection can be properly termed a computer-readable medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above may also be included within the scope of computer-readable media. Additionally, the operations of a method or algorithm may reside as one or any combination or set of codes and instructions on a machine readable medium and computer-readable medium, which may be incorporated into a computer program product. 
     Various modifications to the aspects described in this disclosure may be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the spirit or scope of this disclosure. Thus, the claims are not intended to be limited to the aspects shown herein, but are to be accorded the widest scope consistent with this disclosure, the principles and the novel features disclosed herein. 
     Additionally, a person having ordinary skill in the art will readily appreciate, the terms “upper” and “lower” are sometimes used for ease of describing the Figures, and indicate relative positions corresponding to the orientation of the Figure on a properly oriented page, and may not reflect the proper orientation of any device as implemented. 
     Certain features that are described in this specification in the context of separate aspects also can be implemented in combination in a single aspect. Conversely, various features that are described in the context of a single aspect also can be implemented in multiple aspects separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination. 
     Similarly, while operations are depicted in the drawings in a particular order, this may not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Further, the drawings may schematically depict one more example processes in the form of a flow diagram. However, other operations that are not depicted can be incorporated in the example processes that are schematically illustrated. For example, one or more additional operations can be performed before, after, simultaneously, or between any of the illustrated operations. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the aspects described above may not be understood as requiring such separation in all aspects, and it may be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products. Additionally, other aspects are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results.