Patent Publication Number: US-2020288399-A1

Title: Wake-up signal operation for multiple transmission and reception points

Description:
CROSS REFERENCE 
     The present application for patent claims the benefit of U.S. Provisional Patent Application No. 62/813,673 by PARK et al., entitled “WAKE-UP SIGNAL OPERATION FOR MULTIPLE TRANSMISSION AND RECEPTION POINTS,” filed Mar. 4, 2019, assigned to the assignee hereof, and expressly incorporated herein. 
    
    
     INTRODUCTION 
     The following relates to wireless communications and more specifically to managing wake-up signal (WUS) operations. 
     Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long-Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). 
     A wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE). In some wireless communications systems, a UE may support operation in a discontinuous reception (DRX) mode, where the UE may transition to a sleep mode and wake up periodically to monitor for data or control information from a base station in accordance with a DRX cycle. As such, the UE may save power since the UE may not have to constantly stay awake or constantly monitor for data or control information from the base station. In such systems, to further limit power consumption, a UE may be configured to only wake up in an on-duration of a DRX cycle when the UE receives a WUS from the base station prior to or at the beginning of the on-duration. However, conventional techniques for monitoring for wake-up signaling may be deficient. 
     SUMMARY 
     A method for wireless communication at a UE is described. The method may include receiving a wake-up signal configuration (e.g., from a base station or a network entity associated with a base station), the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, monitoring for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle, receiving at least one wake-up signal prior to or at the beginning of an on duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of information (e.g., data or control information) in the on duration state, and waking up for the UE to receive the information in the on duration state based on receiving the at least one wake-up signal. 
     An apparatus for wireless communication at a UE is described. The apparatus may include a processor and memory coupled to the processor. The processor and memory configured to to receive a wake-up signal configuration. The wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals from the at least one transmission/reception point based on the wake-up signal configuration. The wake-up signaling being for a discontinuous reception cycle. The processor and memory configured to receive at least one wake-up signal prior to or at the beginning of an on duration state in the discontinuous reception cycle based on the monitoring. The at least one wake-up signal indicating a presence of information in the on duration state. The processor and memory configured to wake up for the UE to receive the information in the on duration state based on receiving the at least one wake-up signal. 
     Another apparatus for wireless communication at a UE is described. The apparatus may include means for receiving a wake-up signal configuration, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, monitoring for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle, receiving at least one wake-up signal prior to or at the beginning of an on duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of information in the on duration state, and waking up for the UE to receive the information in the on duration state based on receiving the at least one wake-up signal. 
     A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to receive a wake-up signal configuration, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle, receive at least one wake-up signal prior to or at the beginning of an on duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of information in the on duration state, and wake up for the UE to receive the information in the on duration state based on receiving the at least one wake-up signal. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the at least one transmission/reception point may include operations, features, means, or instructions for monitoring for a wake-up signal from the anchor transmission/reception point. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the at least one wake-up signal may include operations, features, means, or instructions for receiving a wake-up signal from the anchor transmission/reception point, the wake-up signal indicating the presence of data or control information in the on-duration state. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, waking up for the UE to receive the data or control information in the on-duration state may include operations, features, means, or instructions for turning on panels at the UE used to receive signals from the set of transmission/reception points to receive the data or control information in the on-duration state. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, waking up for the UE to receive the data or control information in the on-duration state may include operations, features, means, or instructions for turning on a panel at the UE used to receive signals from the anchor transmission/reception point, receiving a control message in the on-duration state from the anchor transmission/reception point using the panel after waking up in the on-duration state, the control message indicating a subset of the set of transmission/reception points from which the UE may be to monitor for the data or control information in the on-duration state, and turning on panels at the UE used to receive signals from the subset of the set of transmission/reception points to receive the data or control information in the on-duration state. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for initiating an inactivity timer upon turning on the panels at the UE used to receive signals from the subset of the set of transmission/reception points, and turning off the panels used at the UE to receive signals from the subset of the set of transmission/reception points when the inactivity timer expires. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving another control message indicating that the UE may be to turn off the panels at the UE used to receive signals from the subset of the set of transmission/reception points, and turning off the panels at the UE used to receive signals from the subset of the set of transmission/reception points based on receiving the other control message. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message includes a medium access control (MAC) control element (MAC-CE), a downlink control information (DCI) message, or a radio resource control (RRC) message. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the wake-up signal further indicates a subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, waking up for the UE to receive the data or control information in the on-duration state may include operations, features, means, or instructions for turning on a panel at the UE used to receive signals from the anchor transmission/reception point in the on-duration state, and turning on panels at the UE used to receive signals from the subset of the set of transmission/reception points to receive the data or control information in the on-duration state. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the at least one transmission/reception point may include operations, features, means, or instructions for monitoring for wake-up signals from each of the set of transmission/reception points. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the at least one wake-up signal may include operations, features, means, or instructions for receiving wake-up signals from a subset of the set of transmission/reception points, the wake-up signals indicating the presence of data or control information in the on-duration state and indicating the subset of the set of transmission/reception points from which the UE may be to monitor for the data or control information in the on-duration state. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, waking up for the UE to receive the data or control information in the on-duration state may include operations, features, means, or instructions for turning on panels at the UE used to receive signals from the subset of the set of transmission/reception points to receive the data or control information in the on-duration state from the subset of the set of transmission/reception points. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for turning on panels at the UE used to receive signals from the set of transmission/reception points to receive the data or control information in the on-duration state from the subset of the set of transmission/reception points. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the at least one transmission/reception point of the set of transmission/reception points includes an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. 
     A method for wireless communication (e.g., at a base station or a network entity associated with a base station) is described. The method may include transmitting a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identifying information (e.g., data or control information) to transmit to the UE via a subset of the set of transmission/reception points, and transmitting at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. 
     An apparatus for wireless communication is described. The apparatus may include a processor and memory coupled to the processor. The processor and memory configured to transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identify information to transmit to the UE via a subset of the set of transmission/reception points, and transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. 
     Another apparatus for wireless communication is described. The apparatus may include means for transmitting a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identifying information to transmit to the UE via a subset of the set of transmission/reception points, and transmitting at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. 
     A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identify information to transmit to the UE via a subset of the set of transmission/reception points, and transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the at least one transmission/reception point may include operations, features, means, or instructions for transmitting a wake-up signal to the UE via the anchor transmission/reception point, the wake-up signal indicating the presence of data or control information in the on-duration state. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a control message in the on-duration state via the anchor transmission/reception point, the control message indicating the subset of the set of transmission/reception points from which the UE may be to monitor for the data or control information in the on-duration state. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting the data or control information in the on-duration state via the subset of the set of transmission/reception points. 
     Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting another control message indicating the subset of the set of transmission/reception points from which the UE may be to stop monitoring for further data or control information in the on-duration state. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message includes a MAC-CE, a DCI message, or an RRC message. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. 
     In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the wake-up signal further indicates the subset of the set of transmission/reception points from which the UE may be to monitor for the data or control information in the on-duration state. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting the data or control information in the on-duration state via the subset of the set of transmission/reception points. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the indication of the at least one transmission/reception point of the set of transmission/reception points includes an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates an example of a wireless communications system that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 2  illustrates an example of a DRX cycle. 
         FIG. 3  illustrates an example of a DRX cycle used in combination with wake-up signaling. 
         FIG. 4  illustrates an example of a wireless communications system that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 5  illustrates an example of a wireless communications system that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 6  illustrates an example of a wireless communications system that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 7  illustrates an example of a process flow that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIGS. 8 and 9  show block diagrams of devices that support WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 10  shows a block diagram of a communications manager that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 11  shows a diagram of a system including a device that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIGS. 12 and 13  show block diagrams of devices that support WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 14  shows a block diagram of a communications manager that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIG. 15  shows a diagram of a system including a device that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
         FIGS. 16 and 17  show flowcharts illustrating methods that support WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     In some wireless communications systems, a UE may support operation in a DRX mode. While operating in a DRX mode, the UE may transition to a sleep mode in off-duration states of a DRX cycle and the UE may wake up during on-duration states of the DRX cycle to monitor for data or control information from one or more base stations. Since the UE may transition to a sleep mode in off-duration states of the DRX cycle when operating in the DRX mode, the UE may save power when operating in the DRX mode. In some cases, to further limit power consumption, the UE may be configured to only wake up in an on-duration state of the DRX cycle if the UE receives a WUS from the base station prior to the on-duration. In some cases, however, the UE may be communicating on multiple panels with multiple TRPs (e.g., operated by one or more base stations). Thus, prior to every on-duration state of a DRX cycle, the UE may have to turn on all of the multiple panels to monitor for wake-up signaling from the multiple TRPs, resulting in increased power consumption at the UE. 
     As described herein, a UE may support efficient techniques for monitoring for wake-up signaling prior to the on-duration of a DRX cycle when the UE is communicating on multiple panels with multiple TRPs. In particular, a base station may select or identify (e.g., based on a trigger from a UE) certain TRPs that may transmit wake-up signaling to a UE, and the base station may configure the UE to monitor for wake-up signaling from these selected or identified TRPs. As such, the UE may be configured to monitor for wake-up signaling from a subset of all of the TRPs with which the UE is communicating, and the wake-up signaling may indicate the presence of data or control information in an on-duration of a DRX cycle (e.g., where the data or control information may be from any of the TRPs with which the UE is communicating). Once the UE receives wake-up signaling prior to or at the beginning of an on-duration of a DRX cycle from any of the subset of TRPs, the UE may determine the TRPs scheduled to transmit data or control information in the on-duration (e.g., based on the WUS or based on further control signaling), and the UE may turn on the appropriate panels to receive the data or control information from the TRPs in the on-duration. 
     Aspects of the disclosure introduced above are described below in the context of a wireless communications system. Examples of processes and signaling exchanges that support WUS operation for multiple TRPs are then described. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to WUS operation for multiple TRPs. 
       FIG. 1  illustrates an example of a wireless communications system  100  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The wireless communications system  100  includes base stations  105 , UEs  115 , and a core network  130 . In some examples, the wireless communications system  100  may be a Long-Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some cases, wireless communications system  100  may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, or communications with low-cost and low-complexity devices. 
     Base stations  105  may wirelessly communicate with UEs  115  via one or more base station antennas. Base stations  105  described herein may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or some other suitable terminology. Wireless communications system  100  may include base stations  105  of different types (e.g., macro or small cell base stations). The UEs  115  described herein may be able to communicate with various types of base stations  105  and network equipment including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like. 
     Each base station  105  may be associated with a particular geographic coverage area  110  in which communications with various UEs  115  is supported. Each base station  105  may provide communication coverage for a respective geographic coverage area  110  via communication links  125 , and communication links  125  between a base station  105  and a UE  115  may utilize one or more carriers. Communication links  125  shown in wireless communications system  100  may include uplink transmissions from a UE  115  to a base station  105  (e.g., in a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH)), or downlink transmissions from a base station  105  to a UE  115  (e.g., in a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH)). Downlink transmissions may also be called forward link transmissions while uplink transmissions may also be called reverse link transmissions. 
     The geographic coverage area  110  for a base station  105  may be divided into sectors making up a portion of the geographic coverage area  110 , and each sector may be associated with a cell. For example, each base station  105  may provide communication coverage for a macro cell, a small cell, a hot spot, or other types of cells, or various combinations thereof. In some examples, a base station  105  may be movable and therefore provide communication coverage for a moving geographic coverage area  110 . In some examples, different geographic coverage areas  110  associated with different technologies may overlap, and overlapping geographic coverage areas  110  associated with different technologies may be supported by the same base station  105  or by different base stations  105 . The wireless communications system  100  may include, for example, a heterogeneous LTE/LTE-A/LTE-A Pro or NR network in which different types of base stations  105  provide coverage for various geographic coverage areas  110 . 
     The term “cell” may refer to a logical communication entity used for communication with a base station  105  (e.g., over a carrier), and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID)) operating via the same or a different carrier. In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., machine-type communication (MTC), narrowband Internet-of-Things (NB-IoT), enhanced mobile broadband (eMBB), or others) that may provide access for different types of devices. In some cases, the term “cell” may refer to a portion of a geographic coverage area  110  (e.g., a sector) over which the logical entity operates. 
     The term “carrier” may to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communications over a communication link  125 . For example, a carrier of a communication link  125  may include a portion of a radio frequency spectrum band that is operated according to physical layer channels for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling. A carrier may be associated with a pre-defined frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN)) and may be positioned according to a channel raster for discovery by UEs  115 . Carriers may be downlink or uplink (e.g., in a frequency division duplexing (FDD) mode) or be configured to carry downlink and uplink communications (e.g., in a time division duplexing (TDD) mode). In some examples, signal waveforms transmitted over a carrier may be made up of multiple sub-carriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). 
     UEs  115  may be dispersed throughout the wireless communications system  100 , and each UE  115  may be stationary or mobile. A UE  115  may also be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client. A UE  115  may also be a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, a UE  115  may also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, or the like, which may be implemented in various articles such as appliances, vehicles, meters, or the like. 
     Base stations  105  may communicate with the core network  130  and with one another. For example, base stations  105  may interface with the core network  130  through backhaul links  132  (e.g., via an S1, N2, N3, or other interface). Base stations  105  may communicate with one another over backhaul links  134  (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations  105 ) or indirectly (e.g., via core network  130 ). A UE  115  may communicate with the core network  130  through communication link  135 . 
     UE  115  may include UE communications manager  101 , which may receive a WUS configuration from a base station  105 , the WUS configuration indicating at least one TRP of a plurality of TRPs from which the UE  115  is to monitor for WUSs, monitor for wake-up signaling from the at least one TRP based at least in part on the WUS configuration, the wake-up signaling being for a DRX cycle, receive at least one WUS prior to or at the beginning of an on-duration state in the DRX cycle based at least in part on the monitoring, the at least one WUS indicating a presence of data or control information in the on-duration state, and wake up for the UE  115  to receive the data or control information in the on-duration state based at least in part on receiving the at least one wake-up signal. 
     Base station  105  may include base station communications manager  102 , which may transmit a WUS configuration to a UE  115 , the WUS configuration indicating at least one TRP of a plurality of TRPs from which the UE  115  is to monitor for WUSs, identify data or control information to transmit to the UE  115  via a subset of the plurality of TRPs, and transmit at least one WUS to the UE prior to or at the beginning of an on-duration state in a DRX cycle via one or more of the at least one TRP, the at least one WUS indicating a presence of the data or control information in the on-duration state of the DRX cycle. 
     The core network  130  may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network  130  may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one Packet Data Network (PDN) gateway (P-GW). The MME may manage non-access stratum (e.g., control plane) functions such as mobility, authentication, and bearer management for UEs  115  served by base stations  105  associated with the EPC. User IP packets may be transferred through the S-GW, which itself may be connected to the P-GW. The P-GW may provide IP address allocation as well as other functions. The P-GW may be connected to the network operators IP services. The operators IP services may include access to the Internet, Intranet(s), an IP Multimedia Subsystem (IMS), or a Packet-Switched (PS) Streaming Service. 
     At least some of the network devices, such as a base station  105 , may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC). Each access network entity may communicate with UEs  115  through a number of other access network transmission entities, which may be referred to as a radio head, a smart radio head, or a transmission/reception point (TRP). In some configurations, various functions of each access network entity or base station  105  may be distributed across various network devices (e.g., radio heads and access network controllers) or consolidated into a single network device (e.g., a base station  105 ). 
     Wireless communications system  100  may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band, since the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features. However, the waves may penetrate structures sufficiently for a macro cell to provide service to UEs  115  located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter range (e.g., less than 100 km) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz. Wireless communications system  100  may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band. The SHF region includes bands such as the 5 GHz industrial, scientific, and medical (ISM) bands, which may be used opportunistically by devices that may be capable of tolerating interference from other users. 
     Wireless communications system  100  may also operate in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band. In some examples, wireless communications system  100  may support millimeter wave (mmW) communications between UEs  115  and base stations  105 , and EHF antennas of the respective devices may be even smaller and more closely spaced than UHF antennas. In some cases, this may facilitate use of antenna arrays within a UE  115 . However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. Techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body. 
     In some cases, wireless communications system  100  may utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communications system  100  may employ License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz ISM band. When operating in unlicensed radio frequency spectrum bands, wireless devices such as base stations  105  and UEs  115  may employ listen-before-talk (LBT) procedures to ensure a frequency channel is clear before transmitting data. In some cases, operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these. Duplexing in unlicensed spectrum may be based on FDD, TDD, or a combination of both. 
     In some examples, base station  105  or UE  115  may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. For example, wireless communications system  100  may use a transmission scheme between a transmitting device (e.g., a base station  105 ) and a receiving device (e.g., a UE  115 ), where the transmitting device is equipped with multiple antennas and the receiving device is equipped with one or more antennas. MIMO communications may employ multipath signal propagation to increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams. Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) where multiple spatial layers are transmitted to multiple devices. 
     Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station  105  or a UE  115 ) to shape or steer an antenna beam (e.g., a transmit beam or receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying certain amplitude and phase offsets to signals carried via each of the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation). 
     In one example, a base station  105  may use multiple antennas or antenna arrays to conduct beamforming operations for directional communications with a UE  115 . For instance, some signals (e.g. synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a base station  105  multiple times in different directions, which may include a signal being transmitted according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by the base station  105  or a receiving device, such as a UE  115 ) a beam direction for subsequent transmission and/or reception by the base station  105 . 
     Some signals, such as data signals associated with a particular receiving device, may be transmitted by a base station  105  in a single beam direction (e.g., a direction associated with the receiving device, such as a UE  115 ). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based at least in in part on a signal that was transmitted in different beam directions. For example, a UE  115  may receive one or more of the signals transmitted by the base station  105  in different directions, and the UE  115  may report to the base station  105  an indication of the signal it received with a highest signal quality, or an otherwise acceptable signal quality. Although these techniques are described with reference to signals transmitted in one or more directions by a base station  105 , a UE  115  may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE  115 ) or transmitting a signal in a single direction (e.g., for transmitting data to a receiving device). 
     A receiving device (e.g., a UE  115 , which may be an example of a mmW receiving device) may try multiple receive beams when receiving various signals from the base station  105 , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive beams or receive directions. In some examples a receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal). The single receive beam may be aligned in a beam direction determined based at least in part on listening according to different receive beam directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio, or otherwise acceptable signal quality based at least in part on listening according to multiple beam directions). 
     In some cases, the antennas of a base station  105  or UE  115  may be located within one or more antenna arrays, which may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some cases, antennas or antenna arrays associated with a base station  105  may be located in diverse geographic locations. A base station  105  may have an antenna array with a number of rows and columns of antenna ports that the base station  105  may use to support beamforming of communications with a UE  115 . Likewise, a UE  115  may have one or more antenna arrays that may support various MIMO or beamforming operations. 
     In some cases, wireless communications system  100  may be a packet-based network that may operate according to a layered protocol stack. In the user plane, communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use hybrid automatic repeat request (HARD) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE  115  and a base station  105  or core network  130  supporting radio bearers for user plane data. At the Physical layer, transport channels may be mapped to physical channels. 
     In some cases, UEs  115  and base stations  105  may support retransmissions of data to increase the likelihood that data is received successfully. HARQ feedback is one technique of increasing the likelihood that data is received correctly over a communication link  125 . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., signal-to-noise conditions). In some cases, a wireless device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval. 
     Time intervals in LTE or NR may be expressed in multiples of a basic time unit, which may, for example, refer to a sampling period of T s = 1/30,720,000 seconds. Time intervals of a communications resource may be organized according to radio frames each having a duration of 10 milliseconds (ms), where the frame period may be expressed as T f =307,200 T s . The radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame may include 10 subframes numbered from 0 to 9, and each subframe may have a duration of 1 ms. A subframe may be further divided into 2 slots each having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period). Excluding the cyclic prefix, each symbol period may contain 2048 sampling periods. In some cases, a subframe may be the smallest scheduling unit of the wireless communications system  100  and may be referred to as a transmission time interval (TTI). In other cases, a smallest scheduling unit of the wireless communications system  100  may be shorter than a subframe or may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) or in selected component carriers using sTTIs). 
     In wireless communications system  100 , a UE  115  may support operation in a DRX mode (e.g., connected mode DRX (C-DRX)). While operating in a DRX mode, the UE  115  may transition to a sleep mode in off-duration states of a DRX cycle, and the UE  115  may wake up during on-duration states of the DRX cycle to monitor for data or control information from one or more base stations  105  (e.g. where the transitions between sleep and awake states may be done without signaling (i.e., signaling free transitions) and base stations  105  may only schedule data or control information transmissions in on-duration states). Since the UE  115  may transition to a sleep mode in off-duration states of the DRX cycle, the UE  115  may save power when operating in the DRX mode. For example, one or more integrated circuits (e.g., transceivers, processors, etc.) of the UE  115  may implement the methods associated with WUS operation for multiple TRPs to minimize overall power consumption for the UE  115 .  FIG. 2  illustrates an example of a DRX cycle  200 . In the example of  FIG. 2 , a UE  115  may wake up during on-duration states  205 , and after off-duration state  215 - a , the UE  115  may receive data in a PDSCH or control information in a PDCCH at  210  during on-duration state  205 - b . After receiving the data or control information, the UE  115  may initiate an inactivity timer, and, if, for the duration of the inactivity timer, the UE  115  fails to receive additional data or control information, the UE  115  may transition to a sleep mode and continue operating in the DRX mode. 
     In some cases, to further limit power consumption at a UE  115 , the UE  115  may be configured to only wake up in an on-duration of the DRX cycle if the UE  115  receives a WUS from a base station  105  prior to or at the beginning of the on-duration.  FIG. 3  illustrates an example of a DRX cycle  300  used in combination with wake-up signaling. In the example of  FIG. 3 , a UE  115  may be scheduled with on-duration states  305  in a DRX cycle. However, at  310 , for example, the UE  115  may fail to receive a WUS (e.g., during pre-wake stage  325 - a  prior to on-duration state  305 - a ). Thus, UE  115  may avoid waking up in on-duration state  305 - a  (i.e., the UE  115  may skip the on-duration state  305 - a ) and continue to the off-duration state  330 - a  of the DRX cycle. Then, at  315 , the UE  115  may receive a WUS (e.g., during pre-wake stage  325 - b  prior to on-duration state  305 - b ) indicating the presence of data or control information in on-duration state  305 - b . Thus, the UE  115  may wake up in on-duration state  305 - b , and, at  320 , the UE  115  may receive data in a PDSCH or control information in a PDCCH in the on-duration state  305 - b . After receiving the data or control information, the UE  115  may initiate an inactivity timer, and, if, for the duration of the inactivity timer of the DRX cycle, the UE  115  fails to receive additional data or control information, the UE  115  may transition to a sleep mode and continue operating in the DRX mode. 
     By operating in a DRX mode based on a DRX cycle and wake-up signaling (e.g., as described with reference to  FIG. 3 ), a UE  115  may be able to further save power by avoiding waking up in on-duration states unnecessarily. In some cases, however, a UE  115  may be communicating on multiple panels with multiple TRPs (e.g., operated by one or more base stations). In some examples, a panel may be a set of antennas (e.g., a definable unit of an antenna group). Thus, prior to every on-duration of a DRX cycle, the UE  115  may have to turn on all of the multiple panels to monitor for wake-up signaling from the multiple TRPs.  FIG. 4  illustrates an example of a wireless communications system  400  in which a UE  115 - a  turns on and uses multiple panels  410  (e.g.,  410 - a  and  410 - b ) to monitor for wake-up signaling from multiple TRPs  405  (e.g.,  405 - a  and  405 - b ). In the example of  FIG. 4 , since UE  115 - a  may have to turn on and use the multiple panels  410  to monitor for wake-up signaling from the multiple TRPs  405  (i.e., during every pre-wake-up cycle), the power consumption at the UE  115 - a  may be increased. As described herein, a UE  115  in wireless communications system  100  may support efficient techniques for monitoring for wake-up signaling prior to the on-duration state of a DRX cycle when the UE is configured to communicate on multiple panels with multiple TRPs (e.g., to minimize power consumption at the UE). 
       FIG. 5  illustrates an example of a wireless communications system  500  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. Wireless communications system  500  includes base station  105 - a , which may be an example of a base station  105  described with reference to  FIGS. 1-4 . Wireless communications system  500  also includes UE  115 - b , which may be an example of a UE  115  described with reference to  FIGS. 1-4 . Base station  105 - a  may provide communication coverage for a respective coverage area  110 - a , which may be an example of a coverage area  110  described with reference to  FIG. 1 . Wireless communications system  500  may implement aspects of wireless communications system  100 . For example, UE  115 - b  in wireless communications system  500  may support efficient techniques for monitoring for wake-up signaling prior to the on-duration of a DRX cycle when UE  115 - b  is configured to communicate on multiple panels with multiple TRPs (e.g., to minimize power consumption at UE  115 - b ). 
     In the example of  FIG. 2 , the TRPs through which a base station  105 - a  (or other base station  105 ) may transmit wake-up signaling to UE  115 - b  may be configurable. In particular, base station  105 - a  may select TRPs that may transmit wake-up signaling to UE  115 - b  (e.g., based on a trigger from UE  115 - b ), and base station  105 - b  may transmit a WUS configuration  505  to UE  115 - b  for a DRX cycle indicating the selected TRPs that may transmit wake-up signaling to UE  115 - b  prior to on-duration states in the DRX cycle. Thus, based on the WUS configuration, UE  115 - b  may monitor for wake-up signaling from only the selected TRPs (e.g., rather than always monitoring for wake-up signaling from all TRPs) prior to each on-duration state of the DRX cycle. The WUS configuration  505  may be transmitted in RRC signaling to UE  115 - b  or may be transmitted dynamically to UE  115 - b  in a MAC-CE or DCI message. 
     In some aspects, it may be appropriate for all TRPs in communication with UE  115 - b  to transmit wake-up signaling to UE  115 - b  prior to or at the beginning of on-duration states of a DRX cycle (e.g., to increase transmit diversity). Thus, in such aspects, the WUS configuration  505  may indicate that all the TRPs may transmit wake-up signaling to UE  115 - b  (e.g., per-TRP WUS), and UE  115 - b  may turn on the panels used to communicate with all the TRPs to monitor for wake-up signaling from all the TRPs (e.g., in the indicated multi-TRP cluster) prior to or at the beginning of each on-duration state of a DRX cycle (i.e., during every pre-wake-up cycle). 
     In one example, once UE  115 - b  receives at least one WUS prior to or at the beginning of an on-duration state of a DRX cycle, UE  115 - b  may turn on the panels used to communicate with all the TRPs in the on-duration state. That is, in the on-duration state, UE  115 - b  may turn on the panels used to communicate with the TRPs from which the UE  115 - b  receives WUSs prior to or at the beginning of the on-duration state, and UE  115 - b  may turn on panels used to communicate with other TRPs (i.e., the TRPs from which the UE  115 - b  did not receive WUSs prior to or at the beginning of the on-duration state). In this example, the delay associated with using the other TRPs may be reduced (e.g., if the other TRPs are needed), but the power consumption may also be increased unnecessarily (e.g., if the other TRPs are not needed). In another example, in an on-duration state, UE  115 - b  may turn on the panels used to communicate with only those TRPs from which the UE  115 - b  receives WUSs prior to or at the beginning of the on-duration state (i.e., for that on-duration state). In this example, the delay associated with using other TRPs in an on-duration state from which the UE  115 - b  did not receive WUSs prior to or at the beginning of the on-duration sate may be increased (e.g., if the other TRPs are needed), but the power consumption may be decreased (e.g., if the other TRPs are not needed). 
     In other aspects, it may be appropriate for a subset of all TRPs in communication with UE  115 - b  to transmit wake-up signaling to UE  115 - b  prior to or at the beginning of on-duration states of a DRX cycle (e.g., to minimize power consumption at UE  115 - b ). Thus, in such aspects, the WUS configuration  505  may indicate that a subset of all the TRPs may transmit wake-up signaling to UE  115 - b  (e.g., an anchor TRP), and UE  115 - b  may turn on the panels used to communicate with the subset of TRPs to monitor for wake-up signaling from the subset of TRPs prior to or at the beginning of each on-duration state of a DRX cycle (i.e., during every pre-wake-up cycle). 
     In one example, once UE  115 - b  receives a WUS prior to or at the beginning of an on-duration state of a DRX cycle from an anchor TRP, UE  115 - b  may turn on the panels used to communicate with all TRPs in the on-duration state. That is, in the on-duration state, UE  115 - b  may turn on the panels used to communicate with all TRPs with which the UE  115 - b  is in communication. In this example, the delay associated with using the other TRPs may be reduced (e.g., if the other TRPs are needed), but the power consumption may also be increased unnecessarily (e.g., if the other TRPs are not needed). In another example, in an on-duration state, UE  115 - b  may turn on the panel used to communicate with the anchor TRP from which the UE  115 - b  receives a WUS prior to or at the beginning of the on-duration state (i.e., for that on-duration state). In this example, UE  115 - b  may then receive a control message in the on-duration state from the anchor TRP that indicates a subset of TRPs that may transmit data or control information in the on-duration state. Thus, after receiving the control message in the on-duration state, UE  115 - b  may turn on the panels used to communicate with the subset of TRPs such that the UE  115 - b  may receive the data or control information from the subset of TRPs in the on-duration state. Since, in this example, UE  115 - b  may not turn on the panels used to communicate with TRPs other than the anchor TRP until UE  115 - b  receives the control message, the delay associated with using the panels to communicate with the other TRPs may increase, but the power consumption at UE  115 - d  may decrease (i.e., as UE  115 - b  may not unnecessarily turn on any panels to monitor for data or control information from TRPs that may not transmit data or control information). 
     In yet another example, the WUS received from the anchor carrier prior to or at the beginning of an on-duration state may further indicate a subset of TRPs that may transmit data or control information in the on-duration state to UE  115 - b . Thus, after receiving the WUS, UE  115 - b  may turn on the panels used to communicate with the subset of TRPs such that the UE  115 - b  may receive the data or control information from the subset of TRPs in the on-duration state. Since, in this example, UE  115 - b  may be able to identify the TRPs from which to monitor for data or control information in an on-duration state prior to or at the beginning of the on-duration state, there may be minimal or no delay associated with turning on panels to receive the data or control information from the TRPs in the on-duration state and power consumption may also decrease as UE  115 - b  may not unnecessarily turn on any panels to monitor for data or control information from TRPs that may not transmit data or control information. 
       FIG. 6  illustrates an example of operations  600  in a wireless communications system that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. In the example of  FIG. 6 , UE  115 - c  may be configured to monitor for wake-up signaling from an anchor TRP  605 - a  prior to or at the beginning of each on-duration state of a DRX cycle (e.g., based on a WUS configuration for the DRX cycle). As such, in a first operation  600 - a , when a TRP  605 - b  identifies data (e.g., in a data buffer) to transmit to UE  115 - c  in an on-duration state, TRP  605 - b  may transmit the data to the anchor TRP  605 - a  (e.g., over an ideal or non-ideal backhaul connection between TRP  605 - a  and TRP  605 - b ). That is, TRP  605 - b  may inform the anchor TRP  605 - a  via backhaul of a new data arrival for UE  115 - c . Then, in a second operation  600 - b , prior to or at the beginning of an on-duration state, anchor TRP  605 - a  may transmit a WUS to UE  115 - c  indicating the presence of data or control information in the on-duration state (i.e., indicating that a TRP is scheduled to transmit data or control information in the on-duration state). 
     UE  115 - c  may turn on a panel (e.g., panel  610 - a ) used to communicate with or receive signals from the anchor TRP  605 - a  prior to or at the beginning of the on-duration state (e.g., in a pre-wake stage), and UE  115 - c  may receive the WUS from the anchor TRP  605 - a . In one example, the WUS may further indicate that TRP  605 - b  is scheduled to transmit the data or control information in the on-duration state, and, in another example, UE  115 - c  may turn on a panel used to communicate with anchor TRP  605 - a  in the on-duration state and may receive a control message indicating that TRP  605 - b  is scheduled to transmit the data or control information in the on-duration state. Thus, in a third operation  600 - c , UE  115 - c  may turn on a panel (e.g., panel  610 - b ) used to communicate or receive signals from TRP  605 - b  in the on-duration state, and UE  115 - c  may receive the data (PDSCH) or control information (PDCCH) from TRP  605 - b  in the on-duration state. Accordingly, if the WUS or a control message is used to indicate the TRPs that may transmit data or control information in an on-duration state, data may be transmitted either via one TRP (e.g., dynamic TRP selection) or via multiple TRPs (e.g., simultaneous TRP transmission) to UE  115 - c.    
       FIG. 7  illustrates an example of a process flow  700  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. Process flow  700  illustrates aspects of techniques performed by a base station  105 - b , which may be an example of a base station  105  described with reference to  FIGS. 1-6 . Process flow  700  also illustrates aspects of techniques performed by a UE  115 - d , which may be an example of a UE  115  described with reference to  FIGS. 1-6 . Process flow  700  may implement aspects of wireless communications systems  100  and  500 . For example, UE  115 - d  in process flow  700  may support efficient techniques for monitoring for wake-up signaling prior to the on-duration of a DRX cycle when UE  115 - d  is configured to communicate on multiple panels with multiple TRPs (e.g., to minimize power consumption at UE  115 - d ). 
     At  705 , base station  105 - b  may select the TRPs through which to transmit wake-up signaling to UE  115 - d  (e.g., based on an indication of suggested TRPs to use for wake-up signaling received from UE  115 - d ), and base station  105 - b  may transmit a WUS configuration to UE  115 - d  indicating at least one TRP of a plurality of TRPs from which the UE  115 - d  is to monitor for wake-up signals (e.g., the TRPs that may transmit wake-up signaling to the UE  115 - d ). The indication of the at least on TRP may be an explicit indication of the index or indices of the at least one TRP of may be an implicit indication of the index or indices of the at least one TRP (e.g., may indicate transmission configuration indication (TCI) state with quasi co-location (QCL) parameters corresponding to the index or indices of the at least one TRP). 
     Based on the WUS configuration, at  710 , UE  115 - d  may identify the TRPs from which to monitor for WUSs, and, prior to or at the beginning of an on-duration state in a DRX cycle, the UE  115 - d  may monitor for wake-up signaling for the DRX cycle from the at least one TRP based at least in part on the WUS configuration. At  715 , UE  115 - d  may receive at least one WUS prior to or at the beginning of the on-duration state in the DRX cycle based on the monitoring, the at least one WUS indicating a presence of data or control information in the on-duration state. Thus, at  720 , UE  115 - d  may wake up to receive the data or control information in the on-duration state based on receiving the at least one WUS. 
     In some cases, the WUS configuration received at  705  may indicate a single, anchor TRP from which UE  115 - d  is to monitor for wake-up signals. Thus, UE  115 - d  may monitor for a wake-up signal from the anchor TRP and may receive a wake-up signal from the anchor TRP prior to or at the beginning of an on-duration state of a DRX cycle. In some cases, UE  115 - d  may turn on the panels at UE  115 - d  used to receive signals from the plurality of TRPs to receive the data or control information in the on-duration state (e.g., from all of the plurality of TRPs or from a subset of the plurality of TRPs). In other cases, to limit power consumption at the UE  115 - d , it may be appropriate for UE  115 - d  to turn on only those panels used to receive signals from the set of TRPs that may be scheduled to transmit data and control information in the on-duration state. 
     Accordingly, in one example, UE  115 - d  may turn on a panel at the UE  115 - d  used to receive signals from the anchor TRP at the beginning of the on-duration state, and, at  725 , UE  115 - d  may receive a control message (e.g., a MAC-CE, DCI message, or RRC message) in the on-duration state from the anchor TRP using the panel after waking up in the on-duration state. The control message may indicate a subset of the plurality of TRPs from which the UE is to monitor for the data or control information in the on-duration state (i.e., the subset of the plurality of TRPs that may transmit data or control information in the on-duration state). Thus, after receiving the control message, UE  115 - d  may turn on panels at the UE  115 - d  used to receive signals from the subset of the plurality of TRPs to receive the data or control information in the on-duration state. In some cases, if the anchor TRP is not in the subset of the TRPs, UE  115 - d  may turn on the panel used to receive signals from the anchor TRP after receiving the control message. The indication of the subset of TRPs may be an explicit indication of the index of each TRP in the subset or may be an implicit indication of the index of each TRP in the subset (e.g., may indicate a TCI state with QCL parameters corresponding to the index of each TRP in the subset). 
     Thus, based on receiving the control message, the UE  115 - d  may transition from a single-TRP mode to a multi-TRP mode by turning on the panels used to receive signals from the subset of TRPs. In some cases, it may be appropriate for the UE  115 - d  to transition back to a single-TRP mode after some time. Accordingly, in some aspects, the UE  115 - d  may initiate an inactivity timer upon turning on the panels at the UE  115 - d  used to receive signals from the subset of the plurality of TRPs, and UE  115 - d  may turn off the panels used at the UE  115 - d  to receive signals from the subset of the plurality of TRPs when the inactivity timer expires. In such aspects, UE  115 - d  may restart the inactivity timer each time UE  115 - d  receives data or control information from base station  105 - b  (e.g., at the end of a data or control information transmission). In other aspects, base station  105 - b  may indicate when UE  115 - d  is to transition back to a single-TRP mode. In such aspects, UE  115 - d  may receive another control message (e.g., MAC-CE, DCI message, or RRC message) indicating that the UE is to turn off the panels at the UE used to receive signals from the subset of the plurality of TRPs (e.g., or indicating that the subset of the plurality of TRPs are not scheduled for further transmissions in the on-duration state), and UE  115 - d  may turn off the panels at the UE  115 - d  used to receive signals from the subset of the plurality of TRPs based on receiving the other control message. Thus, the single-TRP mode may be the fallback mode, and UE  115 - b  may transfer to a multi-TRP mode by a control message command and may return to the single TRP mode after receiving another control message command or when an inactivity timer expires (e.g., similar to bandwidth part switching or DRX operation). 
     In another example, as an alternative to or in addition to receiving the control message indicating the subset of TRPs from which to monitor for data or control information in the on-duration state, the WUS received at  715  may further indicate the subset (e.g., or a different subset) of the plurality of TRPs from which the UE  115 - d  is to monitor for the data or control information in the on-duration state. The indication of the subset of TRPs may be an explicit indication of the index of each TRP in the subset or may be an implicit indication of the index of each TRP in the subset (e.g., may indicate a TCI state with QCL parameters corresponding to the index of each TRP in the subset). In such cases, UE  115 - d  may turn on a panel at the UE used to receive signals from the anchor TRP at the beginning of or in the on-duration state, and UE  115 - d  may turn on panels at the UE  115 - d  used to receive signals from the subset of the plurality of TRPs at the beginning of or in the on-duration state to receive the data or control information in the on-duration state. In some aspects, UE  115 - d  may only turn on the panel used to receive signals from the anchor TRP if the anchor TRP is included in the subset of the plurality of TRPs from which UE  115 - d  is to monitor for data or control information in the on-duration state. In any case, once UE  115 - d  receives the WUS or WUSs at  715  prior to an on-duration state, UE  115 - d  may wake-up (i.e., turn on the appropriate panels) to receive the data (PDSCH) or control information (PDCCH) from base station  105 - b  at  730 . 
       FIG. 8  shows a block diagram  800  of a device  805  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  805  may be an example of aspects of a UE  115  as described herein. The device  805  may include a receiver  810 , a communications manager  815 , and a transmitter  820 . The device  805  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  810  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to WUS operation for multiple TRPs, etc.). Information may be passed on to other components of the device  805 . The receiver  810  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The receiver  810  may utilize a single antenna or a set of antennas. 
     The communications manager  815  may receive a wake-up signal configuration from a base station, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle, receive at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of data or control information in the on-duration state, and wake up for the UE to receive the data or control information in the on-duration state based on receiving the at least one wake-up signal. The communications manager  815  may be an example of aspects of the communications manager  1110  described herein. 
     The communications manager  815 , or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager  815 , or its sub-components may be executed by a general-purpose 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 in the present disclosure. 
     The communications manager  815 , or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager  815 , or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager  815 , or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure. 
     The transmitter  820  may transmit signals generated by other components of the device  805 . In some examples, the transmitter  820  may be collocated with a receiver  810  in a transceiver module. For example, the transmitter  820  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The transmitter  820  may utilize a single antenna or a set of antennas. 
       FIG. 9  shows a block diagram  900  of a device  905  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  905  may be an example of aspects of a device  805 , or a UE  115  as described herein. The device  905  may include a receiver  910 , a communications manager  915 , and a transmitter  935 . The device  905  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  910  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to WUS operation for multiple TRPs, etc.). Information may be passed on to other components of the device  905 . The receiver  910  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The receiver  910  may utilize a single antenna or a set of antennas. 
     The communications manager  915  may be an example of aspects of the communications manager  815  as described herein. The communications manager  915  may include a WUS configuration manager  920 , a WUS reception manager  925 , and a DRX manager  930 . The communications manager  915  may be an example of aspects of the communications manager  1110  described herein. 
     The WUS configuration manager  920  may receive a wake-up signal configuration from a base station, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. The WUS reception manager  925  may monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle and receive at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of data or control information in the on-duration state. The DRX manager  930  may wake up for the UE to receive the data or control information in the on-duration state based on receiving the at least one wake-up signal. 
     The transmitter  935  may transmit signals generated by other components of the device  905 . In some examples, the transmitter  935  may be collocated with a receiver  910  in a transceiver module. For example, the transmitter  935  may be an example of aspects of the transceiver  1120  described with reference to  FIG. 11 . The transmitter  935  may utilize a single antenna or a set of antennas. 
       FIG. 10  shows a block diagram  1000  of a communications manager  1005  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The communications manager  1005  may be an example of aspects of a communications manager  815 , a communications manager  915 , or a communications manager  1110  described herein. The communications manager  1005  may include a WUS configuration manager  1010 , a WUS reception manager  1015 , a DRX manager  1020 , a control message manager  1025 , and an inactivity timer manager  1030 . Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The WUS configuration manager  1010  may receive a wake-up signal configuration from a base station, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. In some cases, the indication of the at least one transmission/reception point of the set of transmission/reception points includes an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. 
     The WUS reception manager  1015  may monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle. In some examples, the WUS reception manager  1015  may receive at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of data or control information in the on-duration state. In some examples, the WUS reception manager  1015  may monitor for a wake-up signal from the anchor transmission/reception point. In some examples, the WUS reception manager  1015  may receive a wake-up signal from the anchor transmission/reception point, the wake-up signal indicating the presence of data or control information in the on-duration state. In some examples, the WUS reception manager  1015  may monitor for wake-up signals from each of the set of transmission/reception points. 
     In some examples, the WUS reception manager  1015  may receive wake-up signals from a subset of the set of transmission/reception points, the wake-up signals indicating the presence of data or control information in the on-duration state and indicating the subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. In some cases, the wake-up signal further indicates a subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. In some cases, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. 
     The DRX manager  1020  may wake up for the UE to receive the data or control information in the on-duration state based on receiving the at least one wake-up signal. In some examples, the DRX manager  1020  may turn on panels at the UE used to receive signals from the set of transmission/reception points to receive the data or control information in the on-duration state. In some examples, the DRX manager  1020  may turn on a panel at the UE used to receive signals from the anchor transmission/reception point. In some examples, the DRX manager  1020  may turn on panels at the UE used to receive signals from the subset of the set of transmission/reception points to receive the data or control information in the on-duration state. In some examples, the DRX manager  1020  may turn off the panels used at the UE to receive signals from the subset of the set of transmission/reception points when the inactivity timer expires. 
     In some examples, the DRX manager  1020  may turn off the panels at the UE used to receive signals from the subset of the set of transmission/reception points based on receiving the other control message. In some examples, the DRX manager  1020  may turn on a panel at the UE used to receive signals from the anchor transmission/reception point in the on-duration state. In some examples, the DRX manager  1020  may turn on panels at the UE used to receive signals from the subset of the set of transmission/reception points to receive the data or control information in the on-duration state from the subset of the set of transmission/reception points. In some examples, the DRX manager  1020  may turn on panels at the UE used to receive signals from the set of transmission/reception points to receive the data or control information in the on-duration state from the subset of the set of transmission/reception points. 
     The control message manager  1025  may receive a control message in the on-duration state from the anchor transmission/reception point using the panel after waking up in the on-duration state, the control message indicating a subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. In some examples, the control message manager  1025  may receive another control message indicating that the UE is to turn off the panels at the UE used to receive signals from the subset of the set of transmission/reception points. In some cases, the control message includes a MAC-CE, a DCI message, or an RRC message. In some cases, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. The inactivity timer manager  1030  may initiate an inactivity timer upon turning on the panels at the UE used to receive signals from the subset of the set of transmission/reception points. 
       FIG. 11  shows a diagram of a system  1100  including a device  1105  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  1105  may be an example of or include the components of device  805 , device  905 , or a UE  115  as described herein. The device  1105  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager  1110 , an I/O controller  1115 , a transceiver  1120 , an antenna  1125 , memory  1130 , and a processor  1140 . These components may be in electronic communication via one or more buses (e.g., bus  1145 ). 
     The communications manager  1110  may receive a wake-up signal configuration from a base station, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle, receive at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of data or control information in the on-duration state, and wake up for the UE to receive the data or control information in the on-duration state based on receiving the at least one wake-up signal. 
     The I/O controller  1115  may manage input and output signals for the device  1105 . The I/O controller  1115  may also manage peripherals not integrated into the device  1105 . In some cases, the I/O controller  1115  may represent a physical connection or port to an external peripheral. In some cases, the I/O controller  1115  may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. In other cases, the I/O controller  1115  may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I/O controller  1115  may be implemented as part of a processor. In some cases, a user may interact with the device  1105  via the I/O controller  1115  or via hardware components controlled by the I/O controller  1115 . 
     The transceiver  1120  may communicate bi-directionally, via one or more antennas, wired, or wireless links as described herein. For example, the transceiver  1120  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  1120  may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. 
     In some cases, the wireless device may include a single antenna  1125 . However, in some cases the device may have more than one antenna  1125 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. 
     The memory  1130  may include random-access memory (RAM) and read-only memory (ROM). The memory  1130  may store computer-readable, computer-executable code  1135  including instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory  1130  may contain, among other things, a basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices. 
     The processor  1140  may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor  1140  may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into the processor  1140 . The processor  1140  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  1130 ) to cause the device  1105  to perform various functions (e.g., functions or tasks supporting WUS operation for multiple TRPs). 
     The code  1135  may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code  1135  may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code  1135  may not be directly executable by the processor  1140  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. 
       FIG. 12  shows a block diagram  1200  of a device  1205  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  1205  may be an example of aspects of a base station  105  as described herein. The device  1205  may include a receiver  1210 , a communications manager  1215 , and a transmitter  1220 . The device  1205  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1210  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to WUS operation for multiple TRPs, etc.). Information may be passed on to other components of the device  1205 . The receiver  1210  may be an example of aspects of the transceiver  1520  described with reference to  FIG. 15 . The receiver  1210  may utilize a single antenna or a set of antennas. 
     The communications manager  1215  may transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identify data or control information to transmit to the UE via a subset of the set of transmission/reception points, and transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the data or control information in the on-duration state of the discontinuous reception cycle. The communications manager  1215  may be an example of aspects of the communications manager  1510  described herein. 
     The communications manager  1215 , or its sub-components, may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager  1215 , or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure. 
     The communications manager  1215 , or its sub-components, may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components. In some examples, the communications manager  1215 , or its sub-components, may be a separate and distinct component in accordance with various aspects of the present disclosure. In some examples, the communications manager  1215 , or its sub-components, may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure. 
     The transmitter  1220  may transmit signals generated by other components of the device  1205 . In some examples, the transmitter  1220  may be collocated with a receiver  1210  in a transceiver module. For example, the transmitter  1220  may be an example of aspects of the transceiver  1520  described with reference to  FIG. 15 . The transmitter  1220  may utilize a single antenna or a set of antennas. 
       FIG. 13  shows a block diagram  1300  of a device  1305  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  1305  may be an example of aspects of a device  1205 , or a base station  105  as described herein. The device  1305  may include a receiver  1310 , a communications manager  1315 , and a transmitter  1335 . The device  1305  may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses). 
     The receiver  1310  may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to WUS operation for multiple TRPs, etc.). Information may be passed on to other components of the device  1305 . The receiver  1310  may be an example of aspects of the transceiver  1520  described with reference to  FIG. 15 . The receiver  1310  may utilize a single antenna or a set of antennas. 
     The communications manager  1315  may be an example of aspects of the communications manager  1215  as described herein. The communications manager  1315  may include a WUS configuration manager  1320 , a PDCCH/PDSCH manager  1325 , and a WUS transmission manager  1330 . The communications manager  1315  may be an example of aspects of the communications manager  1510  described herein. 
     The WUS configuration manager  1320  may transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. The PDCCH/PDSCH manager  1325  may identify data or control information to transmit to the UE via a subset of the set of transmission/reception points. The WUS transmission manager  1330  may transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the data or control information in the on-duration state of the discontinuous reception cycle. 
     The transmitter  1335  may transmit signals generated by other components of the device  1305 . In some examples, the transmitter  1335  may be collocated with a receiver  1310  in a transceiver module. For example, the transmitter  1335  may be an example of aspects of the transceiver  1520  described with reference to  FIG. 15 . The transmitter  1335  may utilize a single antenna or a set of antennas. 
       FIG. 14  shows a block diagram  1400  of a communications manager  1405  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The communications manager  1405  may be an example of aspects of a communications manager  1215 , a communications manager  1315 , or a communications manager  1510  described herein. The communications manager  1405  may include a WUS configuration manager  1410 , a PDCCH/PDSCH manager  1415 , a WUS transmission manager  1420 , and a control message manager  1425 . Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses). 
     The WUS configuration manager  1410  may transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. In some cases, the indication of the at least one transmission/reception point of the set of transmission/reception points includes an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. The PDCCH/PDSCH manager  1415  may identify data or control information to transmit to the UE via a subset of the set of transmission/reception points. In some examples, the PDCCH/PDSCH manager  1415  may transmit the data or control information in the on-duration state via the subset of the set of transmission/reception points. 
     The WUS transmission manager  1420  may transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the data or control information in the on-duration state of the discontinuous reception cycle. In some examples, the WUS transmission manager  1420  may transmit a wake-up signal to the UE via the anchor transmission/reception point, the wake-up signal indicating the presence of data or control information in the on-duration state. In some cases, the wake-up signal further indicates the subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. In some cases, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. 
     The control message manager  1425  may transmit a control message in the on-duration state via the anchor transmission/reception point, the control message indicating the subset of the set of transmission/reception points from which the UE is to monitor for the data or control information in the on-duration state. In some examples, the control message manager  1425  may transmit another control message indicating the subset of the set of transmission/reception points from which the UE is to stop monitoring for further data or control information in the on-duration state. In some cases, the control message includes a MAC-CE, a DCI message, or an RRC message. In some cases, the indication of the subset of the set of transmission/reception points includes an explicit indication of indices of the subset of the set of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the set of transmission/reception points. 
       FIG. 15  shows a diagram of a system  1500  including a device  1505  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The device  1505  may be an example of or include the components of device  1205 , device  1305 , or a base station  105  as described herein. The device  1505  may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager  1510 , a network communications manager  1515 , a transceiver  1520 , an antenna  1525 , memory  1530 , a processor  1540 , and an inter-station communications manager  1545 . These components may be in electronic communication via one or more buses (e.g., bus  1550 ). 
     The communications manager  1510  may transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals, identify data or control information to transmit to the UE via a subset of the set of transmission/reception points, and transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the data or control information in the on-duration state of the discontinuous reception cycle. 
     The network communications manager  1515  may manage communications with the core network (e.g., via one or more wired backhaul links). For example, the network communications manager  1515  may manage the transfer of data communications for client devices, such as one or more UEs  115 . 
     The transceiver  1520  may communicate bi-directionally, via one or more antennas, wired, or wireless links as described herein. For example, the transceiver  1520  may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver  1520  may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. 
     In some cases, the wireless device may include a single antenna  1525 . However, in some cases the device may have more than one antenna  1525 , which may be capable of concurrently transmitting or receiving multiple wireless transmissions. 
     The memory  1530  may include RAM, ROM, or a combination thereof. The memory  1530  may store computer-readable code  1535  including instructions that, when executed by a processor (e.g., the processor  1540 ) cause the device to perform various functions described herein. In some cases, the memory  1530  may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. 
     The processor  1540  may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor  1540  may be configured to operate a memory array using a memory controller. In some cases, a memory controller may be integrated into processor  1540 . The processor  1540  may be configured to execute computer-readable instructions stored in a memory (e.g., the memory  1530 ) to cause the device  1505  to perform various functions (e.g., functions or tasks supporting WUS operation for multiple TRPs). 
     The inter-station communications manager  1545  may manage communications with other base station  105  and may include a controller or scheduler for controlling communications with UEs  115  in cooperation with other base stations  105 . For example, the inter-station communications manager  1545  may coordinate scheduling for transmissions to UEs  115  for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager  1545  may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations  105 . 
     The code  1535  may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications. The code  1535  may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code  1535  may not be directly executable by the processor  1540  but may cause a computer (e.g., when compiled and executed) to perform functions described herein. 
       FIG. 16  shows a flowchart illustrating a method  1600  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The operations of method  1600  may be implemented by a UE  115  or its components as described herein. For example, the operations of method  1600  may be performed by a communications manager as described with reference to  FIGS. 8 through 11 . In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally, or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware. 
     At  1605 , the UE may receive a wake-up signal configuration, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. The operations of  1605  may be performed according to the methods described herein. In some examples, aspects of the operations of  1605  may be performed by a WUS configuration manager as described with reference to  FIGS. 8 through 11 . 
     At  1610 , the UE may monitor for wake-up signaling from the at least one transmission/reception point based on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle. The operations of  1610  may be performed according to the methods described herein. In some examples, aspects of the operations of  1610  may be performed by a WUS reception manager as described with reference to  FIGS. 8 through 11 . 
     At  1615 , the UE may receive at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based on the monitoring, the at least one wake-up signal indicating a presence of information in the on-duration state. The operations of  1615  may be performed according to the methods described herein. In some examples, aspects of the operations of  1615  may be performed by a WUS reception manager as described with reference to  FIGS. 8 through 11 . 
     At  1620 , the UE may wake up for the UE to receive the information in the on-duration state based on receiving the at least one wake-up signal. The operations of  1620  may be performed according to the methods described herein. In some examples, aspects of the operations of  1620  may be performed by a DRX manager as described with reference to  FIGS. 8 through 11 . 
       FIG. 17  shows a flowchart illustrating a method  1700  that supports WUS operation for multiple TRPs in accordance with one or more aspects of the present disclosure. The operations of method  1700  may be implemented by a network entity (e.g., a base station  105  or its components) as described herein. For example, the operations of method  1700  may be performed by a communications manager as described with reference to  FIGS. 12 through 15 . In some examples, a network entity or a base station may execute a set of instructions to control the functional elements of the network entity or the base station to perform the functions described below. Additionally, or alternatively, a network entity or base station may perform aspects of the functions described below using special-purpose hardware. 
     At  1705 , the network entity or base station may transmit a wake-up signal configuration to a UE, the wake-up signal configuration indicating at least one transmission/reception point of a set of transmission/reception points from which the UE is to monitor for wake-up signals. The operations of  1705  may be performed according to the methods described herein. In some examples, aspects of the operations of  1705  may be performed by a WUS configuration manager as described with reference to  FIGS. 12 through 15 . 
     At  1710 , the network entity or base station may identify information to transmit to the UE via at least a subset of the set of transmission/reception points. The operations of  1710  may be performed according to the methods described herein. In some examples, aspects of the operations of  1710  may be performed by a PDCCH/PDSCH manager as described with reference to  FIGS. 12 through 15 . 
     At  1715 , the network entity or base station may transmit at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. The operations of  1715  may be performed according to the methods described herein. In some examples, aspects of the operations of  1715  may be performed by a WUS transmission manager as described with reference to  FIGS. 12 through 15 . 
     It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined. 
     Example 1 
     A method for wireless communications at a UE, comprising: receiving a wake-up signal configuration, the wake-up signal configuration indicating at least one transmission/reception point of a plurality of transmission/reception points from which the UE is to monitor for wake-up signals; monitoring for wake-up signaling from the at least one transmission/reception point based at least in part on the wake-up signal configuration, the wake-up signaling being for a discontinuous reception cycle; receiving at least one wake-up signal prior to or at the beginning of an on-duration state in the discontinuous reception cycle based at least in part on the monitoring, the at least one wake-up signal indicating a presence of information in the on-duration state; and waking up to receive information in the on-duration state based at least in part on receiving the at least one wake-up signal. 
     Example 2 
     The method of example 1, wherein the at least one transmission/reception point comprises a single, anchor transmission/reception point, and wherein monitoring further comprises monitoring for a wake-up signal from the anchor transmission/reception point. 
     Example 3 
     The method of example 1 or 2, wherein receiving the at least one wake-up signal comprises receiving a wake-up signal from the anchor transmission/reception point, the wake-up signal indicating the presence of information in the on-duration state. 
     Example 4 
     The method of any of examples 1 to 3, wherein receiving the at least one wake-up signal comprises receiving a wake-up signal from the anchor transmission/reception point, the wake-up signal indicating the presence of information in the on-duration state. 
     Example 5 
     The method of any of examples 1 to 4, wherein waking up for the UE to receive the information in the on-duration state comprises: turning on a panel at the UE used to receive signals from the anchor transmission/reception point; receiving a control message in the on-duration state from the anchor transmission/reception point using the panel after waking up in the on-duration state, the control message indicating a subset of the plurality of transmission/reception points from which the UE is to monitor for the information in the on-duration state; and turning on panels at the UE used to receive signals from the subset of the plurality of transmission/reception points to receive the information in the on-duration state. 
     Example 6 
     The method of any of examples 1 to 5, further comprising: initiating an inactivity timer upon turning on the panels at the UE used to receive signals from the subset of the plurality of transmission/reception points; and turning off the panels used at the UE to receive signals from the subset of the plurality of transmission/reception points when the inactivity timer expires. 
     Example 7 
     The method of any of examples 1 to 6, further comprising: receiving another control message indicating that the UE is to turn off the panels at the UE used to receive signals from the subset of the plurality of transmission/reception points; and turning off the panels at the UE used to receive signals from the subset of the plurality of transmission/reception points based at least in part on receiving the other control message. 
     Example 8 
     The method of any of examples 1 to 7, wherein the control message comprises a medium access control (MAC) control element (MAC-CE), a downlink control information (DCI) message, or a radio resource control (RRC) message. 
     Example 9 
     The method of any of examples 1 to 8, wherein the indication of the subset of the plurality of transmission/reception points comprises an explicit indication of indices of the subset of the plurality of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the plurality of transmission/reception points. 
     Example 10 
     The method of any of examples 1 to 9, wherein the wake-up signal further indicates a subset of the plurality of transmission/reception points from which the UE is to monitor for the information in the on-duration state. 
     Example 11 
     The method of any of examples 1 to 10, wherein waking up for the UE to receive the information in the on-duration state comprises: turning on a panel at the UE used to receive signals from the anchor transmission/reception point in the on-duration state; and turning on panels at the UE used to receive signals from the subset of the plurality of transmission/reception points to receive the information in the on-duration state. 
     Example 12 
     The method of any of examples 1 to 11, wherein the indication of the subset of the plurality of transmission/reception points comprises an explicit indication of indices of the subset of the plurality of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the plurality of transmission/reception points. 
     Example 13 
     The method of example 1, wherein the at least one transmission/reception point comprises the plurality of transmission/reception points, and wherein the monitoring further comprises monitoring for wake-up signals from each of the plurality of transmission/reception points. 
     Example 14 
     The method of examples 1 or 13, wherein receiving the at least one wake-up signal comprises receiving wake-up signals from a subset of the plurality of transmission/reception points, the wake-up signals indicating the presence of information in the on-duration state and indicating the subset of the plurality of transmission/reception points from which the UE is to monitor for the information in the on-duration state. 
     Example 15 
     The method of any of examples 1, 13, or 14, wherein waking up for the UE to receive the information in the on-duration state comprises turning on panels at the UE used to receive signals from the subset of the plurality of transmission/reception points to receive the information in the on-duration state from the subset of the plurality of transmission/reception points. 
     Example 16 
     The method of any of examples 1 or 13 to 15, wherein turning on panels at the UE used to receive signals from the plurality of transmission/reception points to receive the information in the on-duration state from the subset of the plurality of transmission/reception points. 
     Example 17 
     The method of any of examples 1 to 16, wherein the indication of the at least one transmission/reception point of the plurality of transmission/reception points comprises an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. 
     Example 18 
     The method of any of examples 1 to 17, wherein the information in the on-duration state comprises at least one of control information or data information. 
     Example 19 
     The method of any of examples 1 to 18, wherein receiving a wake-up signal configuration information comprises receiving a wake-up signal configuration from a base station. 
     Example 20 
     The method of any of examples 1 to 19, wherein the at least one transmission/reception point of the plurality of transmission/reception points from which the UE is to monitor for wake-up signals is a transmission/reception point associated with the base station. 
     Example 21 
     An apparatus comprising at least one means for performing a method of any of examples 1 to 20. 
     Example 22 
     An apparatus for wireless communications comprising a processor; and memory coupled to the processor, the processor and memory configured to perform a method of any of examples 1 to 20. 
     Example 23 
     A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of examples 1 to 20. 
     Example 24 
     A method for wireless communications, comprising: transmitting a wake-up signal configuration to a user equipment (UE), the wake-up signal configuration indicating at least one transmission/reception point of a plurality of transmission/reception points from which the UE is to monitor for wake-up signals; determining information to transmit to the UE via at least a subset of the plurality of transmission/reception points; and transmitting at least one wake-up signal to the UE prior to or at the beginning of an on-duration state in a discontinuous reception cycle via one or more of the at least one transmission/reception point, the at least one wake-up signal indicating a presence of the information in the on-duration state of the discontinuous reception cycle. 
     Example 25 
     The method of example 24, wherein the at least one transmission/reception point comprises a single, anchor transmission/reception point, and wherein the transmitting the at least one wake-up signal further comprises: transmitting a wake-up signal to the UE via the anchor transmission/reception point, the wake-up signal indicating the presence of information in the on-duration state. 
     Example 26 
     The method of example 24 or 25, further comprising: transmitting a control message in the on-duration state via the anchor transmission/reception point, the control message indicating the subset of the plurality of transmission/reception points from which the UE is to monitor for the information in the on-duration state. 
     Example 27 
     The method of any of examples 24 to 26, further comprising: transmitting a control message in the on-duration state via the anchor transmission/reception point, the control message indicating the subset of the plurality of transmission/reception points from which the UE is to monitor for the information in the on-duration state. 
     Example 28 
     The method of any of examples 24 to 27, further comprising: transmitting the information in the on-duration state via the subset of the plurality of transmission/reception points. 
     Example 29 
     The method of any of examples 24 to 28, further comprising: transmitting another control message indicating the subset of the plurality of transmission/reception points from which the UE is to stop monitoring for further information in the on-duration state. 
     Example 30 
     The method of any of examples 24 to 29, wherein the control message comprises a medium access control (MAC) control element (MAC-CE), a downlink control information (DCI) message, or a radio resource control (RRC) message. 
     Example 31 
     The method of any of examples 24 to 30, wherein the indication of the subset of the plurality of transmission/reception points comprises an explicit indication of indices of the subset of the plurality of transmission/reception points or an indication of transmission configuration indication states corresponding to the indices of the subset of the plurality of transmission/reception points. 
     Example 32 
     The method of any of examples 24 to 31, wherein the indication of the at least one transmission/reception point of the plurality of transmission/reception points comprises an explicit indication of indices of the at least one transmission/reception point or an indication of transmission configuration indication states corresponding to the indices of the at least one transmission/reception point. 
     Example 33 
     An apparatus comprising at least one means for performing a method of any of examples 24 to 32. 
     Example 34 
     An apparatus for wireless communications comprising a processor; and memory coupled to the processor, the processor and memory configured to perform a method of any of examples 24 to 32. 
     Example 35 
     A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to perform a method of any of examples 24 to 32. 
     Techniques described herein may be used for various wireless communications systems such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. A CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95, and IS-856 standards. IS-2000 Releases may be commonly referred to as CDMA2000 1×, 1×, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 1×EV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system may implement a radio technology such as Global System for Mobile Communications (GSM). 
     An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE, LTE-A, and LTE-A Pro are releases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from the organization named “3rd Generation Partnership Project” (3GPP). CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned herein as well as other systems and radio technologies. While aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR applications. 
     A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider. A small cell may be associated with a lower-powered base station, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macro cells. Small cells may include pico cells, femto cells, and micro cells according to various examples. A pico cell, for example, may cover a small geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider. A femto cell may also cover a small geographic area (e.g., a home) and may provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in the home, and the like). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or multiple (e.g., two, three, four, and the like) cells, and may also support communications using one or multiple component carriers. A gNB for a macro cell may be referred to as a macro gNB. A gNB for a small cell may be referred to as a small cell gNB, a pico gNB, a femto gNB, or a home gNB. A gNB may support one or multiple (e.g., two, three, four, and the like) cells (e.g., component carriers). A UE may be able to communicate with various types of base stations and network equipment including macro eNBs, small cell eNBs, relay base stations, and the like. 
     The wireless communications systems described herein may support synchronous or asynchronous operation. For synchronous operation, the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations. 
     Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof. 
     The various illustrative blocks and modules described in connection with the disclosure herein may be implemented or performed with a general-purpose processor, a DSP, an ASIC, an 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, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., 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). 
     The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. 
     Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, include 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 are also included within the scope of computer-readable media. 
     As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of”) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.” 
     In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label. 
     The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “exemplary” used herein means “serving as an example, instance, or illustration,” and not “preferred” or “advantageous over other examples.” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples. 
     The description herein is provided to enable a person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.