Wake-up signaling for discontinuous reception groups

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may selectively monitor a cell of a first discontinuous reception (DRX) group for a wake-up signal (WUS) based at least in part on a configuration of the UE; and during a DRX cycle of the first DRX group associated with the WUS, selectively start a DRX on duration timer for a second DRX group based at least in part on the WUS and based on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 959,766, filed on January 10, 2020, entitled “WAKE-UP SIGNALING FORDISCONTINUOUS RECEPTION GROUPS,” and U.S. Non-Provisional Patent Application No. 17 / 122,460, filed on December 15, 2020, entitled “WAKE-UP SIGNALING FORDISCONTINUOUS RECEPTION GROUPS,” which are hereby expressly incorporated herein by reference.

[0003] Public domain

[0004] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus related to wake-up signaling for discontinuous reception groups.

[0005] background

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0007] A wireless communication network may include several base stations (BS) that can support communication of several user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. Downlinks (or forward links) refer to the communication link from a BS to a UE, while uplinks (or reverse links) refer to the communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an Access Point (AP), a Radio Head, a Transmit Receive Point (TRP), a New Radio (NR) BS, a 5G Node B, and the like.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different user equipment to communicate at city, country, region, and even global levels. New Radio (NR) (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a UE may include: selectively monitoring a cellular cell of a first discontinuous reception (DRX) group for a wake-up signal (WUS) based at least in part on a configuration of the UE; and selectively starting the DRX on duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0011] In some aspects, a wireless communication method performed by a base station may include: determining whether a second DRX group of the UE has a DRX on duration opportunity during a DRX cycle of a first DRX group of the UE; and selectively transmitting a wake-up signal (WUS) associated with the DRX cycle of the first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted at least in part based on at least one of the following: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has data buffered for transmission via the second DRX group.

[0012] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: selectively monitor a cell of a first DRX group for a WUS based at least in part on a configuration of the UE; and selectively start a DRX On duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and based on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group.

[0013] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: determine whether a second DRX group of the UE has a DRX on duration opportunity during a DRX cycle of a first DRX group of the UE; and selectively transmit a wake-up signal (WUS) associated with the DRX cycle of the first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted based at least in part on at least one of the following: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has data buffered for transmission via the second DRX group.

[0014] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: selectively monitor a cell of a first DRX group for a WUS based at least in part on a configuration of the UE; and selectively start a DRX On duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and based on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group.

[0015] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: determine whether a second DRX group of the UE has a DRX on duration opportunity during a DRX cycle of a first DRX group of the UE; and selectively transmit a wake-up signal (WUS) associated with the DRX cycle of the first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted based at least in part on at least one of the following: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has buffered data for transmission via the second DRX group.

[0016] In some aspects, a device for wireless communication may include: a device for selectively monitoring a cellular cell of a first DRX group for a WUS based at least in part on a configuration of the device; and a device for selectively starting a DRX on duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0017] In some aspects, an apparatus for wireless communication may include: a device for determining whether a second DRX group of the UE has a DRX on duration opportunity during a DRX cycle of a first DRX group of the UE; and a device for selectively transmitting a WUS associated with the DRX cycle of the first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted at least in part based on at least one of the following: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has buffered data for transmission via the second DRX group.

[0018] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and as illustrated in the accompanying figures and specification.

[0019] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for implementing the same purpose as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and is not intended to define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to understand the above-stated features of the present disclosure in detail, the above briefly summarized content may be described in more detail with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0023] Figure 2 is a block diagram conceptually illustrating an example of a base station and a UE in communication in a wireless communication network according to various aspects of the present disclosure.

[0024] Figure 3 is a diagram illustrating an example of wake-up signaling for a discontinuous reception group according to aspects of the present disclosure.

[0025] Figures 4A-4D is a diagram illustrating an example of wake-up signaling for a discontinuous reception group according to aspects of the present disclosure.

[0026] Figure 5 is a diagram illustrating an example process, performed, for example, by user equipment, in accordance with various aspects of the present disclosure.

[0027] Figure 6 is a diagram illustrating example processes performed, for example, by a base station in accordance with various aspects of the present disclosure.

[0028] Detailed Description

[0029] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and it will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using supplements or other other structures, functionality, or structures and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0030] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] It should be noted that although various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technologies.

[0032] Figure 1 1 is a diagram illustrating a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, B node, gNB, 5G B node (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0033] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. The BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" may be used interchangeably herein.

[0034] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or the like using any suitable transport network.

[0035] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0036] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0037] A network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0038] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UEs may also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, etc. A UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0039] Some UEs may be considered as machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network (such as the Internet) or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as client equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, and the like.

[0040] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0041] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0042] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 Examples described.

[0043] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1 One for each base station and one for each UE in the base station 110. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0044] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0045] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0046] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236, if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and provide decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0047] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of the base station 110 may perform one or more techniques associated with wake-up signaling for a discontinuous reception (DRX) group, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 5 The process of 500 Figure 6 600, and / or operations of other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120, may perform or direct, for example, Figure 5 The process of 500 Figure 6 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0048] In some aspects, UE 120 may include: means for selectively monitoring a cell of a first DRX group for a wake-up signal (WUS) based at least in part on a configuration of UE 120; means for selectively starting a DRX on duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and based on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group; and the like. In some aspects, such means may include means for selectively monitoring a cell of a first DRX group for a wake-up signal (WUS) based at least in part on a configuration of UE 120; means for selectively starting a DRX on duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS; and the like. Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0049] In some aspects, the base station 110 may include: a device for determining whether a second DRX group of the UE has a DRX on duration opportunity during a DRX cycle of a first DRX group of the UE; a device for selectively transmitting a WUS associated with the DRX cycle of the first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted based at least in part on at least one of the following: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group; or whether the base station has buffered data for transmission via the second DRX group; etc. In some aspects, such a device may include a device in combination with Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0050] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 Examples described.

[0051] DRX is a configuration in which the UE can switch between DRX active time (in which the UE is in active communication with the network) and DRX inactive time (in which the UE is not in active communication with the network). The UE may periodically wake up during the DRX on duration to monitor (e.g., on a physical downlink control channel (PDCCH)) for indications of switching from the DRX inactive time to the DRX active time. When the UE wakes up during the DRX on duration, the UE may power on an associated modem and / or other components to perform monitoring.

[0052] Some networks may further use wake-up signaling to indicate to the UE whether the UE is to wake up and monitor for indications of switching from DRX inactive time to DRX active time.The UE may use relatively simple circuitry to handle the WUS, rather than powering the associated modem and / or other components.

[0053] Some UEs may be configured to use two or more DRX groups to communicate with one or more base stations of a network. For example, a UE may use a first DRX group having one or more cells operating in a low-band or mid-band frequency, and may use a second DRX group having one or more cells operating in a high-band (e.g., millimeter wave (mmWave)) frequency. If the UE receives a WUS indicating that the UE is to wake up, the UE may wake up both DRX groups based at least in part on the WUS, and consume power, computation, and / or network resources to monitor the corresponding PDCCHs of the DRX groups. If the network has buffered data for transmission via the first DRX group but does not have buffered data for transmission via the second DRX group, the UE may waste power, computation, and / or network resources to start a DRX on duration timer for the second DRX group to monitor for an indication of switching from a DRX inactive time to a DRX active time when the network does not have buffered data to be sent via the second DRX group. Additionally, if the second DRX group operates in a relatively high frequency, the UE may consume a relatively high amount of power to wake up and monitor for indications.

[0054] In some aspects described herein, a UE may selectively monitor a cell of a first DRX group for a WUS based at least in part on a configuration of the UE. Based at least in part on the WUS, the UE may selectively start a DRX On duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS. The DRX On duration timer for the second DRX group may be selectively started based further at least in part on whether the second DRX group has a DRX On duration opportunity during a DRX cycle of the first DRX group.

[0055] In this way, when the network does not have data buffered for transmission via the second DRX group, the UE can reduce the frequency of unnecessarily starting the DRX on duration timer for the second DRX group. For example, if the network has data buffered for transmission via the first DRX group but does not have data buffered for transmission via the second DRX group, a base station of the network can provide a WUS associated with the DRX cycle of the first DRX group, where the second DRX group does not have an on duration opportunity. In this way, the UE can start the DRX on duration timer for the first DRX group without starting the DRX on duration timer for the second DRX group, which can save power, computation, and / or network resources.

[0056] Figure 3 is a diagram illustrating an example 300 of wake-up signaling for a discontinuous reception group in accordance with aspects of the present disclosure. Figure 3The UE 120 and the base station 110 are shown performing wake-up signaling for multiple DRX groups (eg, a first DRX group and a second DRX group). In some aspects, the second DRX group may have fewer DRX On Duration occasions than all DRX cycles of the first DRX group.

[0057] like Figure 3 3 and 310, UE 120 may receive configuration information (eg, from base station 110). UE 120 may receive the configuration information via radio resource control (RRC) signaling, downlink control information (DCI), or the like.

[0058] In some aspects, the configuration information may indicate to the UE 120 that the second DRX group is to have DRX On Duration opportunities during less than all DRX cycles of the first DRX group. In other words, the configuration information may indicate that the second DRX group is to have a DRX cycle length that is different from the DRX cycle length of the first DRX group (e.g., longer than the DRX cycle length of the first DRX group, a multiple of the DRX cycle length of the first DRX group, etc.). The configuration information may, for example, indicate the length of the DRX Inactive Time, the DRX On Duration timer, the DRX Active Time, the DRX cycle, etc. for the first DRX group and / or the second DRX group.

[0059] In some aspects, the configuration information may indicate that the UE 120 is to monitor for a WUS only within a DRX cycle of the first DRX group during which both the first DRX group and the second DRX group have a DRX On duration opportunity. In other words, the configuration information may indicate that the UE 120 is to monitor for a WUS associated with the DRX cycle of the first DRX group only when the first DRX group and the second DRX group have a DRX On duration opportunity in the same DRX cycle. For example, if the second DRX group has a DRX cycle length that is twice the length of the DRX cycle of the first DRX group, the UE 120 may alternate between monitoring and not monitoring for a WUS associated with the DRX cycle of the first DRX group.

[0060] In some aspects, the configuration information may indicate to the UE 120 that the DRX active time for the second DRX group is to be selectively started based at least in part on whether the UE 120 receives a WUS during the DRX active time of the first DRX group, whether the WUS indicates that the DRX on duration timer is to be started, whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group, etc. For example, the configuration information may indicate to the UE 120 that the DRX active time for the second DRX group is to be started during the DRX cycle of the first DRX group based at least in part on receiving a WUS indicating that the DRX on duration timer is to be started, the UE 120 receiving the WUS while the first DRX group is in the DRX active time, and the second DRX group does not have a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0061] As shown by reference numeral 320, UE 120 may selectively monitor cells of the first DRX group for a WUS. In some aspects, UE 120 may monitor cells of the first DRX group based at least in part on a configuration of UE 120, whether the first DRX group is outside of DRX active time, whether the second DRX group has a DRX on duration opportunity during a DRX cycle of the first DRX group, etc. In some aspects, the configuration of UE 120 may be periodically updated via updated configuration information (e.g., received from base station 110).

[0062] As indicated by reference numeral 330, the base station 110 may determine whether the second DRX group of the UE 120 has a DRX on duration opportunity during the DRX cycle of the first DRX group associated with the WUS. For example, the base station 110 may know the configuration of the DRX active time, the DRX inactive time, etc. of the first DRX group and the second DRX group. The base station 110 may use the configuration to determine whether the second DRX group of the UE 120 has a DRX on duration opportunity during the DRX cycle of the first DRX group. In some aspects, the base station 110 or another base station of a network associated with the base station 110 may have previously transmitted to the UE 120 an indication of the configuration of the DRX active time, the DRX inactive time, etc. of the first DRX group and the second DRX group.

[0063] In some aspects, the base station 110 may determine whether the base station 110 has data buffered for transmission to the UE 120 via the second DRX group. For example, if the UE 120 communicates with the base station 110 at a relatively low data rate that is adequately supported via the first DRX group (e.g., the bandwidth of the first DRX group is sufficient to support the data rate), the base station 110 may not have data buffered for transmission to the UE 120 via the second DRX group. If the UE 120 communicates with the base station 110 at a relatively high data rate that is not adequately supported via the first DRX group, the base station 110 may buffer data for transmission via the second DRX group. If the base station 110 has data buffered for transmission via the second DRX group, the base station 110 may determine to transmit a WUS with an indication that the UE 120 is to start a DRX On Duration timer for the second DRX group, start a DRX Active Time for the second DRX group, etc. so that the base station 110 can transmit the buffered data via the second DRX group.

[0064] In some aspects, the base station 110 may determine whether the first DRX group is outside of the DRX active time for the first DRX group during the DRX cycle of the first DRX group. If the UE 120 is configured not to monitor for a WUS when the UE 120 is in the active time, the base station 110 may further determine not to send the WUS to the UE 120 when the UE 120 is in the active time, regardless of whether the base station 110 has data buffered for transmission via the first DRX group or the second DRX group. In some aspects, if the base station 110 has data buffered for transmission via the first DRX group and / or the second DRX group, the base station 110 may identify the DRX cycle of the first DRX group for which the WUS is transmitted, and the UE 120 is configured to monitor for the first DRX group for which the WUS is transmitted.

[0065] As indicated by reference numeral 340, the base station 110 may selectively transmit a WUS associated with the DRX cycle of the first DRX group. For example, the base station 110 may transmit a WUS with an indication to start the DRX on duration timer during the DRX cycle of the first DRX group, may transmit a WUS with an indication to transmit a WUS with an indication not to start the DRX on duration timer during the DRX cycle of the first DRX group, or may not transmit a WUS. In some aspects, the UE 120 may be configured to interpret a failure to receive a WUS from the base station 110 to have the same effect as receiving a WUS with an indication not to start the DRX on duration timer during the DRX cycle of the first DRX group.

[0066] In some aspects, the base station 110 may transmit the WUS based at least in part on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group; whether the base station 110 has data buffered for transmission via the second DRX group; whether the base station 110 has data buffered for transmission via the first DRX group; whether the first DRX group is outside the DRX active time during the DRX cycle of the first DRX group of the UE 120; etc. For example, the base station 110 may determine to transmit the WUS with an indication to start the DRX On duration timer based at least in part on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group; the base station 110 has data buffered for transmission via the second DRX group and / or the first DRX group; the first DRX group is outside the DRX active time (e.g., at least in part depending on the configuration of the UE 120); etc. In some aspects, the base station 110 may determine not to transmit a WUS with an indication to start a DRX on duration timer based at least in part on: the second DRX group does not have a DRX on duration opportunity during the DRX cycle of the first DRX group; the base station 110 does not have data buffered for transmission via the second DRX group and / or the first DRX group; whether the first DRX group is in the DRX active time during the DRX cycle of the first DRX group of UE 120; and the like.

[0067] In some aspects, the base station 110 may not transmit a WUS associated with a particular DRX cycle of the first DRX group based at least in part on the fact that the base station 110 does not have data buffered for transmission via the second DRX group. Alternatively, the base station 110 may identify a different DRX cycle of the first DRX group for transmitting a WUS with an indication that a DRX on duration timer is to be started, wherein the second DRX group does not have a DRX on duration opportunity, so the UE 120 does not need to start a DRX on duration timer for the second DRX group. If the base station 110 does not have data buffered for transmission via the second DRX group, and has data buffered for transmission via the first DRX group, the base station 110 may choose to transmit a WUS indicating that a DRX on duration timer is to be started during a DRX cycle of the first DRX group, wherein the WUS will not cause the UE 120 to start a DRX on duration timer for the second DRX group (which saves power, computation, and / or network resources), and will start a DRX on duration timer for the first DRX group for which data will be buffered for transmission.

[0068] As indicated by reference numeral 350, the UE 120 may selectively start a DRX on duration timer for the second DRX group during a DRX cycle of the first DRX group, based at least in part on a WUS and whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group. For example, if the WUS indicates that the DRX on duration timer is to be started, the UE 120 may start a DRX on duration timer for the second DRX group during the DRX cycle when (e.g., only when) the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group. If the second DRX group does not have a DRX on duration opportunity during the DRX cycle, the UE 120 may not start a DRX on duration timer for the second DRX group during the DRX cycle of the first DRX group. If the WUS includes an indication not to start a DRX on duration timer or if the UE 120 does not receive a WUS, the UE may not start a DRX on duration timer for the second DRX group and / or for the first DRX group.

[0069] In some aspects, if the WUS indicates that the DRX On duration timer is to be started, the UE 120 may start the DRX On duration timer for the first DRX group regardless of whether the second DRX group has a DRX On duration opportunity. In this way, the UE 120 may have some DRX cycles in which the UE 120 may start the DRX On duration timer only for the first DRX group and other DRX cycles in which the UE 120 may start the DRX On duration timer for both the first DRX group and the second DRX group.

[0070] In some aspects, selectively starting a DRX on duration timer for a second DRX group during a DRX cycle of a first DRX group is independent of a previous WUS associated with a previous DRX cycle of the first DRX group. In other words, whether to start the DRX on duration timer may be based at least in part on a most recently received WUS and may be independent of a previous WUS. This may mean that if UE 120 receives an intervening WUS and / or if UE 120 monitors during an intervening WUS opportunity, a WUS indicating that a DRX on duration timer is to be started may not cause UE 120 to start a DRX on duration timer for the second DRX group during a subsequent DRX cycle of the second DRX group.

[0071] For example, if the UE 120 fails to receive an intervening WUS while monitoring for a WUS, or receives an intervening WUS with an indication not to start the DRX on duration timer, the UE may not start the DRX on duration timer for the second DRX group during the next DRX cycle. In some aspects, if the UE 120 does not monitor for an intervening WUS, the UE 120 may be configured to start the DRX on duration timer for the second DRX group during the next DRX cycle of the second DRX group. In some aspects, if the UE 120 does not monitor for an intervening WUS, the UE 120 may be configured not to start the DRX on duration timer for the second DRX group during the next DRX cycle of the second DRX group. If the UE 120 does not monitor for an intervening WUS, the UE 120 may be selectively configured (e.g., via configuration information from the network) to start or not start the DRX on duration timer for the second DRX group during the next DRX cycle of the second DRX group.

[0072] In some aspects, UE 120 can start the DRX active time for the second DRX group based at least in part on configuration information, receiving a WUS indicating that a DRX on duration timer is to be started during the DRX active time of the first DRX group, the second DRX group not having a DRX on duration opportunity during the DRX cycle of the first DRX group, etc.

[0073] When the UE starts the DRX on duration timer for the second DRX group, the UE 120 may cause the modem and / or other components of the UE 120 to monitor the PDCCH of one or more cells of the second DRX group for one or more indications to start the DRX active time for the one or more cells of the second DRX group.

[0074] By selectively monitoring the cells of the first DRX group for a WUS based at least in part on the configuration of the UE 120, and by selectively starting the DRX On duration timer for the second DRX group, as described herein, the UE 120 may not monitor for a WUS for each DRX cycle of the first DRX group. Additionally, the UE 120 may have some DRX cycles in the first DRX group in which the UE 120 may start the DRX On duration timer only for the first DRX group, and other DRX cycles in which the UE 120 may start the DRX On duration timer for both the first DRX group and the second DRX group. In this way, the UE 120 may save power, computation, and / or network resources that would otherwise be used to monitor for a WUS during each DRX cycle of the first DRX group and / or start the DRX On duration timer for both DRX groups whenever the UE 120 receives a WUS with an indication that the DRX On duration timer is to be started.

[0075] As indicated above, Figure 3 is provided as one or more examples. Other examples may differ from the Figure 3 Examples described.

[0076] Figures 4A-4D is a diagram illustrating examples 400, 420, 440, and 460 of wake-up signaling for a discontinuous reception group in accordance with aspects of the present disclosure. Examples 400, 420, 440, and 460 show various procedures taken by a UE 120 based at least in part on the configuration of the UE 120 and / or the WUS.

[0077] Figure 4A A first DRX cycle 402 of the first DRX group, a second DRX cycle 404 of the first DRX group, and a third DRX cycle 406 of the first DRX group are shown. Figure 4A Also shown is a first DRX cycle 408 of a second DRX group and a second DRX cycle 410 of the second DRX group. The second DRX group has a DRX cycle length that is longer than the DRX cycle length of the first DRX group. As shown, the DRX cycle length of the second DRX group is twice the DRX cycle length of the first DRX group. In some aspects, the DRX cycle length of the second DRX group can be a different multiple (e.g., 3 times, 4 times, etc.) of the DRX cycle length of the first DRX group.

[0078] The first DRX cycle 402 of the first DRX group includes a DRX on duration opportunity for the first DRX group and a DRX on duration opportunity for the second DRX group. During the first DRX cycle 402 of the first DRX group, the UE 120 monitors to find and receives a WUS with an indication to start a DRX on duration timer (e.g., wake up). The UE 120 may monitor to find the WUS based at least in part on the first DRX group being outside of the DRX active time. In some aspects, the UE 120 may monitor to find the WUS via a cell (e.g., a specific cell) of the first DRX group.

[0079] Based at least in part on receiving a WUS with an indication that a DRX On Duration timer is to be started and that the first DRX group and the second DRX group have DRX On Duration opportunities during a DRX cycle 402 of the first DRX group, the UE 120 starts a DRX On Duration timer for the first DRX group and the second DRX group during a first DRX cycle 402 of the first DRX group. In some aspects, the WUS may not identify the UE 120 as a specific DRX group for which the DRX On Duration timer is to be started, and the UE 120 may start the DRX On Duration timer for all DRX groups having DRX On Duration opportunities during the DRX cycle of the first DRX group associated with the WUS.

[0080] The second DRX cycle 404 of the first DRX group includes a DRX On duration opportunity for the first DRX group and does not include a DRX On duration opportunity for the second DRX group. During the second DRX cycle 404 of the first DRX group, the UE 120 monitors for and receives a WUS with an indication to start a DRX On duration timer. Based at least in part on the first DRX group having a DRX On duration opportunity during the second DRX cycle 404 of the first DRX group and the second DRX group not having a DRX On duration opportunity during the second DRX cycle 404 of the first DRX group, the UE 120 starts the DRX On duration timer for the first DRX group and does not start the DRX On duration timer for the second DRX group.

[0081] The third DRX cycle 406 of the first DRX group includes DRX on duration opportunities for the first DRX group and for the second DRX group. During the third DRX cycle 406 of the first DRX group, the UE 120 monitors for the WUS but does not receive a WUS with an indication to start the DRX on duration timer. For example, the UE 120 may monitor for the WUS but does not receive the WUS, or the UE 120 may receive a WUS with an indication not to wake up. Based at least in part on not receiving a WUS with an indication to start the DRX on duration timer, the UE does not start the DRX on duration timer for the first DRX group or the second DRX group for the DRX on duration opportunities during the third DRX cycle 406 of the first DRX group.

[0082] In some aspects, selectively starting a DRX timer for a second DRX group during a specific DRX cycle of a first DRX group may be independent of a previous WUS of a previous DRX cycle of the first DRX group. For example, in a third DRX cycle 406 of the first DRX group, the UE 120 does not start a DRX on duration timer for the second DRX group, even though the UE 120 never started a DRX on duration timer for the second DRX group after the UE 120 received a WUS indicating that a DRX on duration timer is to be started in a second DRX cycle 404 of the first DRX group. In other words, a WUS with an indication to start or not to start a DRX on duration timer does not always cause the UE 120 to take responsive action for each DRX group. Alternatively, the UE 120 may use only the most recently received WUS to take responsive action for individual DRX groups with DRX on durations within a specific DRX cycle of the first DRX group.

[0083] use Figure 4A In the configuration of the first DRX group, the UE 120 may have some DRX cycles in the first DRX group in which the UE 120 may respond to the WUS by starting the DRX On Duration timer for both DRX groups and some DRX cycles in the first DRX group in which the UE 120 may respond to the WUS by starting the DRX On Duration timer only for the first DRX group. In this way, the UE 120 may save battery, computational, and / or network resources by allowing the WUS an opportunity to cause the UE 120 to start the DRX On Duration timer only for the first DRX group instead of for all DRX groups of the UE 120.

[0084] Figure 4B A first DRX cycle 422 of the first DRX group, a second DRX cycle 424 of the first DRX group, and a third DRX cycle 426 of the first DRX group are shown. Figure 4BAlso shown is a first DRX cycle 428 of a second DRX group and a second DRX cycle 430 of a second DRX group. Figure 4A The second DRX group has a DRX cycle length longer than that of the first DRX group. The UE 120 may be configured to monitor for WUS only within the DRX cycle of the first DRX group, during which both the first DRX group and the second DRX group have DRX On duration opportunities.

[0085] The first DRX cycle 422 of the first DRX group includes a DRX on duration opportunity for the first DRX group and a DRX on duration opportunity for the second DRX group. During the first DRX cycle 422 of the first DRX group, the UE 120 monitors to find and receives a WUS with an indication to start the DRX on duration timer. The UE 120 may monitor to find the WUS based at least in part on the first DRX group being outside the DRX active time. In some aspects, the UE 120 may monitor to find the WUS via a cell (e.g., a specific cell) of the first DRX group.

[0086] At least partially based on receiving a WUS with an indication to start a DRX on duration timer, and the first DRX group and the second DRX group having a DRX on duration opportunity during a DRX cycle 422 of the first DRX group, the UE 120 starts the DRX on duration timers for the first DRX group and the second DRX group during the first DRX cycle 422 of the first DRX group.

[0087] The second DRX cycle 424 of the first DRX group includes a DRX on duration opportunity for the first DRX group and does not include a DRX on duration opportunity for the second DRX group. During the second DRX cycle 424 of the first DRX group, the UE 120 does not monitor for a WUS based at least in part on the second DRX group not having a DRX on duration opportunity during the second DRX cycle 424 of the first DRX group. Based at least in part on the UE 120 not monitoring for a WUS during the second DRX cycle 424 of the first DRX group, the UE may start a DRX on duration timer for the first DRX group (e.g., by default). Based at least in part on the second DRX group not having a DRX on duration opportunity during the second DRX cycle 424 of the first DRX group, the UE 120 may not start a DRX on duration timer for the second DRX group.

[0088] The third DRX cycle 426 of the first DRX group includes a DRX On duration opportunity for the first DRX group and a DRX On duration opportunity for the second DRX group. As during the first DRX cycle 422 of the first DRX group, during the third DRX cycle 426 of the first DRX group, the UE 120 monitors to find and receives a WUS with an indication to start the DRX On duration timer. Based at least in part on receiving the WUS with an indication to start the DRX On duration timer, the UE 120 starts the DRX On duration timer for the first DRX group and the second DRX group.

[0089] use Figure 4B In a configuration, UE 120 may have some DRX cycles in the first DRX group in which a DRX On Duration timer only for the first DRX group may be started by UE 120 (e.g., based on not monitoring for a WUS), and may be configured to respond to a WUS by selectively starting a DRX On Duration timer for both DRX groups. In this way, UE 120 may save battery, computational, and / or network resources by allowing base station 110 an opportunity to not transmit a WUS (or to transmit a WUS with an indication not to start a DRX On Duration timer) when base station 110 has data buffered for transmission via the first DRX group and does not have data buffered for transmission via the second DRX group. For example, base station 110 may instead transmit an indication via PDCCH during a DRX On Duration opportunity for the first DRX group during a DRX cycle of the first DRX group in which UE 120 does not monitor for a WUS.

[0090] Figure 4C A first DRX cycle 442 of the first DRX group, a second DRX cycle 444 of the first DRX group, and a third DRX cycle 446 of the first DRX group are shown. Figure 4C Also shown is a first DRX cycle 448 of a second DRX group and a second DRX cycle 450 of a second DRX group. Figure 4A In some aspects, the UE 120 may be configured to monitor for a WUS during the DRX active time, the DRX inactive time, and the like. The UE 120 may also be configured to not start the DRX active time for the second DRX when the UE 120 receives a WUS associated with a DRX cycle of the first DRX group in which the second DRX group does not have a DRX on duration opportunity.

[0091] The first DRX cycle 442 of the first DRX group includes a DRX On Duration opportunity for the first DRX group and a DRX On Duration opportunity for the second DRX group. During the first DRX cycle 442 of the first DRX group, the UE 120 monitors for and receives a WUS with an indication to start a DRX On Duration timer.

[0092] Based at least in part on receiving a WUS with an indication to start a DRX On Duration timer and the first DRX group and the second DRX group having a DRX On Duration opportunity during a first DRX cycle 442 of the first DRX group, the UE 120 starts a DRX On Duration timer for the first DRX group and the second DRX group during the first DRX cycle 442 of the first DRX group. In some aspects, the first DRX group is switched to a DRX active time (e.g., based at least in part on the indication received during the DRX On Duration time), and the first DRX group is switched to a DRX inactive time after the DRX On Duration timer.

[0093] The second DRX cycle 444 of the first DRX group includes a DRX On duration opportunity for the first DRX group and does not include a DRX On duration opportunity for the second DRX group. During the second DRX cycle 444 of the first DRX group, the UE 120 monitors for and does not receive a WUS with an indication to start a DRX On duration timer. The UE 120 does not start the DRX On duration timer for the first DRX group during the second DRX cycle 444 of the first DRX group, and does not start the DRX On duration timer for the second DRX group.

[0094] The third DRX cycle 446 of the first DRX group includes a DRX on duration opportunity for the first DRX group and a DRX on duration opportunity for the second DRX group. As during the first DRX cycle 442 of the first DRX group, during the third DRX cycle 446 of the first DRX group, the UE 120 monitors to find and receives a WUS with an indication to start the DRX on duration timer. Based at least in part on receiving the WUS with an indication to start the DRX on duration timer, the UE 120 starts the DRX on duration timer for the first DRX group and the second DRX group during the third DRX cycle 446 of the first DRX group. In some aspects, the first DRX group can remain in the DRX active time and the second DRX group can return to the DRX inactive time. In some aspects, the second DRX group can alternatively be switched to the DRX active time based at least in part on the UE 120 receiving an indication to buffer data for transmission via the second DRX group during the DRX on duration time.

[0095] use Figure 4C The configuration of the first DRX group, when the first DRX group has sufficient bandwidth for the data rate, the UE 120 can use the first DRX group to serve the traffic with a relatively low data rate. The base station 110 can indicate to the UE 120 via the WUS or the lack of WUS not to start the DRX on duration timer of the second DRX group within the associated DRX cycle of the first DRX group, which can save battery, computing and / or network resources.

[0096] Figure 4D A first DRX cycle 462 of the first DRX group, a second DRX cycle 464 of the first DRX group, and a third DRX cycle 466 of the first DRX group are shown. Figure 4D Also shown is a first DRX cycle 468 of a second DRX group and a second DRX cycle 470 of a second DRX group. Figure 4A In the embodiment, the second DRX group has a DRX cycle length that is longer than a DRX cycle length of the first DRX group.

[0097] UE 120 may be configured to monitor for WUS when the first DRX group is in the DRX active time. In some aspects, UE 120 may be configured to monitor for WUS during the DRX active time, the DRX inactive time, etc. UE 120 may also be configured to start the DRX active time for the second DRX when UE 120 receives a WUS associated with the DRX cycle of the first DRX group (wherein the second DRX group does not have a DRX on duration opportunity) (e.g., immediately or shortly thereafter). UE 120 may start the DRX active time for the second DRX group, even if the next DRX on duration opportunity is set to start later than the on duration opportunity of the first DRX group. This configuration may be configurable by the network (e.g., by the base station 110) via RRC signaling, DCI, etc.

[0098] The first DRX cycle 462 of the first DRX group includes a DRX on duration opportunity for the first DRX group and a DRX on duration opportunity for the second DRX group. During the first DRX cycle 462 of the first DRX group, the UE 120 monitors to find and receives a WUS with an indication to start the DRX on duration timer. In some aspects, the UE 120 may monitor to find the WUS when the first DRX group is outside the DRX active time. In some aspects, the UE 120 may monitor to find the WUS via a cell (e.g., a specific cell) of the first DRX group.

[0099] Based at least in part on receiving a WUS with an indication to start a DRX on duration timer, the UE 120 starts a DRX on duration timer for the first DRX group and the second DRX group. In some aspects, the first DRX group may be switched to a DRX active time (e.g., based at least in part on an indication received during the DRX on duration time), and the second DRX group may be switched to a DRX inactive time.

[0100] The second DRX cycle 464 of the first DRX group includes a DRX On duration opportunity for the first DRX group and does not include a DRX On duration opportunity for the second DRX group. During the second DRX cycle 464 of the first DRX group, the UE 120 monitors for and receives a WUS with an indication to start a DRX On duration timer. The UE 120 starts the DRX On duration timer for the first DRX group and starts the DRX active time for the second DRX group.

[0101] The third DRX cycle 466 of the first DRX group includes a DRX on duration opportunity for the first DRX group and a DRX on duration opportunity for the second DRX group. During the third DRX cycle 466 of the first DRX group, the UE 120 monitors for and receives a WUS with an indication to start the DRX on duration timer. The UE 120 may monitor for the WUS while the first DRX group is within the DRX active time.

[0102] Based at least in part on receiving a WUS with an indication to start a DRX on duration timer, the UE 120 starts a DRX on duration timer for the first DRX group and the second DRX group. In some aspects, the first DRX group may be switched to a DRX inactive time, and the second DRX group may be switched to a DRX inactive time (e.g., based at least in part on the indication received during the DRX on duration time).

[0103] use Figure 4D According to the configuration of the present invention, the UE 120 may respond to the WUS indicating that the DRX on duration timer is to be started by starting the DRX on duration timer for the second DRX group when the first DRX group is already in the DRX active time. In this way, the UE 120 may save battery, computing, and / or network resources by allowing the UE to start the DRX active time for the second DRX group without first starting the DRX on duration timer for the second DRX group.

[0104] As indicated above, Figures 4A-4D are provided as examples. Other examples may differ from those described in Figures 4A-4D Examples described.

[0105] Figure 5 is a diagram illustrating an example process 500, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 500 is an example of operations in which a UE (eg, UE 120, etc.) performs wake-up signaling for a discontinuous reception group.

[0106] like Figure 5 , in some aspects, process 500 may include selectively monitoring cells of a first DRX group for a WUS based at least in part on a configuration of the UE (block 510). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may selectively monitor cells of a first DRX group for a WUS based at least in part on a configuration of the UE, as described above.

[0107] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include selectively starting a DRX On duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and based on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group (block 520). For example, the UE (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, etc.) may selectively start a DRX On duration timer for a second DRX group during a DRX cycle of the first DRX group associated with the WUS based at least in part on the WUS and based on whether the second DRX group has a DRX On duration opportunity during the DRX cycle of the first DRX group, as described above.

[0108] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0109] In a first aspect, selectively monitoring cells of a first DRX group for a WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

[0110] In a second aspect, either alone or in combination with the first aspect, process 500 includes starting the DRX on duration timer for the second DRX group based at least in part on receiving the WUS having an indication to start the DRX on duration timer and based on the second DRX group having a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0111] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 500 includes not starting the DRX on-duration timer for the second DRX group based at least in part on: receiving the WUS with an indication not to start the DRX on-duration timer, or not receiving the WUS.

[0112] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 500 includes selectively starting a DRX On Duration timer for the first DRX group based at least in part on the WUS.

[0113] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, selectively starting the DRX on-duration timer for the first DRX group includes starting the DRX on-duration timer for the first DRX group based at least in part on receiving a WUS having an indication to start the DRX on-duration timer.

[0114] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, selectively starting the DRX start timer for the first DRX group includes not starting the DRX start timer for the first DRX group based at least in part on: receiving the WUS with an indication not to start the DRX start timer, or not receiving the WUS.

[0115] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the DRX on duration timer for the second DRX group is selectively started during the DRX cycle of the first DRX group independently of a previous WUS associated with a previous DRX cycle of the first DRX group.

[0116] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, starting the DRX start duration timer for the second DRX group during the DRX cycle of the first DRX group includes monitoring a physical downlink control channel of one or more cells of the second DRX group to look for one or more indications of a DRX active time to be started for the one or more cells of the second DRX group.

[0117] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 500 includes receiving configuration information from a base station indicating to a UE that the second DRX group is to have a DRX cycle length longer than that of the first DRX group.

[0118] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, receiving the configuration information comprises receiving the configuration information via radio resource control signaling.

[0119] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the cellular cell of the first DRX group is selectively monitored to look for the WUS based at least in part on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0120] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, process 500 includes receiving configuration information from a base station indicating that the UE is to monitor for the WUS only within a DRX cycle in which both the first DRX group and the second DRX group have a DRX on duration in the first DRX group.

[0121] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, process 500 includes determining not to monitor the cell of the first DRX group for the WUS based at least in part on the fact that the second DRX group does not have a DRX on duration opportunity during an additional DRX cycle of the first DRX group; and starting a DRX on duration timer for the first DRX group during the additional DRX cycle of the first DRX group based at least in part on determining not to monitor the cell of the first DRX group for the WUS.

[0122] In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, selectively monitoring the cell of the first DRX group for the WUS includes monitoring the cell of the first DRX group for the WUS during a DRX active time of the first DRX group.

[0123] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 500 includes receiving configuration information indicating that the UE is to start a DRX active time for the second DRX group based at least in part on: receiving the WUS indicating that a DRX start duration timer is to be started during the DRX active time of the first DRX group; and the second DRX group does not have a DRX start duration opportunity during the DRX cycle of the first DRX group.

[0124] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, process 500 includes receiving the configuration information via radio resource control signaling.

[0125] In a seventeenth aspect, either alone or in combination with one or more of aspects one to sixteen, process 500 includes selectively starting a DRX active time for the second DRX group based at least in part on whether the WUS and the second DRX group have a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0126] In an eighteenth aspect, either alone or in combination with one or more of aspects one to seventeen, process 500 includes starting the DRX active time for the second DRX group based at least in part on receiving the WUS having an indication to start a DRX start duration timer and based on the second DRX group not having a start duration opportunity during the DRX cycle of the first DRX group.

[0127] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the UE selectively starts the DRX on duration timer for the second DRX group during the DRX cycle of the DRX group associated with the WUS, at least in part based on whether the UE monitors the cellular cell of the first DRX group to find the WUS.

[0128] In the twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, process 500 includes receiving configuration information from a base station, the configuration information indicating to the UE whether to start a DRX on-duration timer for the second DRX group if the UE does not monitor the cell of the first DRX group to search for the WUS.

[0129] In aspect twenty-one, alone or in combination with one or more of aspects one to sixteen, the UE starts the DRX on-duration timer for the second DRX group during the DRX cycle of the DRX group associated with the WUS, at least in part based on whether the UE monitors the cell of the first DRX group for the WUS.

[0130] although Figure 5 An example block diagram of process 500 is shown, but in some aspects, process 500 may include Figure 5 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 500. Additionally or alternatively, two or more blocks of the process 500 may be executed in parallel.

[0131] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process 600 is an example of operations in which a base station (eg, base station 110, etc.) performs wake-up signaling associated with a non-continuous reception group.

[0132] like Figure 6 As shown in , in some aspects, process 600 may include determining whether a second DRX group of the UE has a DRX On duration opportunity during a DRX cycle of a first DRX group of the UE (block 610). For example, a base station (e.g., using receive processor 238, transmit processor 220, controller / processor 240, memory 242, etc.) may determine whether a second DRX group of the UE has a DRX On duration opportunity during a DRX cycle of a first DRX group of the UE, as described above.

[0133] like Figure 6 As further shown in, in some aspects, process 600 may include selectively transmitting a WUS associated with a DRX cycle of a first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted based at least in part on at least one of: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has data buffered for transmission via the second DRX group (box 620). For example, a base station (e.g., using receive processor 238, transmit processor 220, controller / processor 240, memory 242, etc.) may selectively transmit a WUS associated with a DRX cycle of a first DRX group to indicate that the UE is to start a DRX on duration timer during the DRX cycle of the first DRX group, wherein the WUS is selectively transmitted based at least in part on at least one of: whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group, or whether the base station has data buffered for transmission via the second DRX group, as described above.

[0134] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0135] In a first aspect, process 600 includes determining whether a first DRX group of the UE is outside of a DRX active time during a DRX cycle of the first DRX group of the UE, wherein a WUS is further selectively transmitted based at least in part on whether the first DRX group of the UE is outside of the DRX active time during the DRX cycle of the first DRX group of the UE.

[0136] In the second aspect, alone or in combination with the first aspect, process 600 includes: determining that the second DRX group of the UE has the DRX on duration opportunity during the DRX cycle of the first DRX group of the UE; determining that the base station has buffered data for transmission via the second DRX group of the UE; and transmitting the WUS to the UE, the WUS having an indication to start the DRX on duration timer during the DRX cycle of the first DRX group of the UE.

[0137] In a third aspect, alone or in combination with one or more of the first and second aspects, process 600 includes determining one or more of the following: the second DRX group of the UE does not have a DRX on duration opportunity during the DRX cycle of the first DRX group of the UE, or the base station does not have buffered data for transmission via the second DRX group of the UE; and determining not to transmit a WUS having an indication to start a DRX on duration timer during the DRX cycle of the first DRX group of the UE.

[0138] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 600 includes transmitting a WUS to the UE, the WUS having an indication not to start a DRX on duration timer during the DRX cycle of the first DRX group of the UE.

[0139] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 600 includes transmitting configuration information to the UE indicating that the UE is to monitor for a WUS associated with the DRX cycle of the first DRX group of the UE only when the first DRX group of the UE and the second DRX group of the UE have a DRX on duration opportunity in the same DRX cycle.

[0140] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 600 includes transmitting configuration information to the UE, the configuration information indicating that upon receiving the WUS, the DRX active time for the second DRX group of the UE is to be selectively started based at least in part on one or more of the following: whether the first DRX group of the UE is in the DRX active time, or whether the second DRX group of the UE has a DRX on duration opportunity during the DRX cycle of the first DRX group of the UE.

[0141] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, transmitting the configuration information to the UE includes transmitting the configuration information to the UE via radio resource control signaling.

[0142] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, process 600 includes transmitting configuration information to the UE, the configuration information indicating that the DRX active time for the second DRX group of the UE is to be started based at least in part on one or more of the following: the first DRX group of the UE is in the DRX active time, and the second DRX group of the UE does not have a DRX on duration opportunity during the DRX cycle of the first DRX group of the UE.

[0143] although Figure 6 An example block diagram of process 600 is shown, but in some aspects, process 600 may include Figure 6 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in process 600. Additionally or alternatively, two or more blocks of process 600 may be executed in parallel.

[0144] The following provides an overview of some aspects of the disclosure:

[0145] Aspect 1: A wireless communication method performed by a user equipment (UE), comprising: selectively monitoring a cellular cell of a first discontinuous reception (DRX) group to search for a wake-up signal (WUS) based at least in part on a configuration of the UE; and during a DRX cycle of the first DRX group associated with the WUS, selectively starting the DRX on duration timer for the second DRX group based at least in part on the WUS and on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0146] Aspect 2: The method of aspect 1, wherein selectively monitoring the cell of the first DRX group to find the WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

[0147] Aspect 3: The method as described in any one of Aspects 1 to 2 further includes: starting the DRX on duration timer for the second DRX group based at least in part on receiving the WUS having an indication to start the DRX on duration timer and the second DRX group having a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0148] Aspect 4: The method as described in any one of Aspects 1 to 2 further includes: not starting the DRX on-duration timer for the second DRX group based at least in part on: receiving the WUS with an indication not to start the DRX on-duration timer, or not receiving the WUS.

[0149] Aspect 5: The method as described in any one of Aspects 1 to 2 further includes: selectively starting a DRX start-up timer for the first DRX group based at least in part on the WUS, wherein selectively starting the DRX start-up timer for the first DRX group includes: starting the DRX start-up timer for the first DRX group based at least in part on receiving the WUS with an indication to start the DRX start-up timer; or not starting the DRX start-up timer for the first DRX group based at least in part on: receiving the WUS with an indication not to start the DRX start-up timer, or not receiving the WUS.

[0150] Aspect 6: The method as described in any one of Aspects 1 to 5, wherein selectively starting the DRX on duration timer for the second DRX group during the DRX cycle of the first DRX group is independent of a previous WUS associated with a previous DRX cycle of the first DRX group.

[0151] Aspect 7: A method as described in any one of Aspects 1 to 6, wherein starting the DRX start duration timer for the second DRX group during the DRX cycle of the first DRX group includes: monitoring the physical downlink control channel of one or more cellular cells of the second DRX group to find one or more indications of the DRX active time to be started for the one or more cellular cells of the second DRX group.

[0152] Aspect 8: The method as described in any one of aspects 1 to 7 further includes: receiving configuration information from a base station, the configuration information indicating to the UE that the second DRX group is to have a DRX cycle length longer than the DRX cycle length of the first DRX group, wherein receiving the configuration information includes: receiving the configuration information via radio resource control signaling. Wherein receiving the configuration information includes: receiving the configuration information via radio resource control signaling.

[0153] Aspect 9: The method as described in any one of Aspects 1 to 8, wherein selectively monitoring the cellular cell of the first DRX group to find the WUS includes: monitoring the cellular cell of the first DRX group to find the WUS during the DRX active time of the first DRX group.

[0154] Aspect 10: The method of Aspect 9 further includes: receiving configuration information indicating that the UE is to start the DRX active time for the second DRX group based at least in part on the following items: receiving the WUS indicating that the DRX start duration timer is to be started during the DRX active time of the first DRX group; and the second DRX group does not have a DRX start duration opportunity during the DRX cycle of the first DRX group.

[0155] Aspect 11: The method of Aspect 9 further comprises: selectively starting a DRX active time for the second DRX group based at least in part on the WUS and based on whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

[0156] Aspect 12: The method of Aspect 11 further includes: starting the DRX active time for the second DRX group based at least in part on receiving the WUS having an indication to start the DRX start duration timer and based on the fact that the second DRX group does not have a start duration opportunity during the DRX cycle of the first DRX group.

[0157] Aspect 13: A method as described in any of Aspects 1 to 2, wherein the UE selectively starts the DRX on-duration timer for the second DRX group during the DRX cycle of the DRX group associated with the WUS based at least in part on whether the UE monitors the cellular cell of the first DRX group to find the WUS.

[0158] Aspect 14: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in one or more of Aspects 1-13.

[0159] Aspect 15: A device for wireless communication, comprising: a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more aspects of aspects 1-13.

[0160] Aspect 16: An apparatus for wireless communication, comprising: at least one device for performing the method of one or more aspects of aspects 1-13.

[0161] Aspect 17: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-13.

[0162] Aspect 18: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more aspects of aspects 1-13.

[0163] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired by practice of the various aspects.

[0164] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, and / or a combination of hardware and software.

[0165] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0166] It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software codes-it is understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0167] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase quoting "at least one of" a column of items refers to any combination of these items, including a single member. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc, and abc, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other sorting of a, b and c).

[0168] Elements, actions or instructions used herein should not be interpreted as critical or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, non-related items, combinations of related and non-related items, etc.), and can be used interchangeably with "one or more". In the case of intending to have only one item, the phrase "only one" or similar language is used. Moreover, as used herein, the terms "having", "containing", "including", etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A wireless communication method performed by a user equipment UE, comprising: Monitoring a cell of a first discontinuous reception (DRX) group for a wake-up signal WUS based at least in part on a configuration of the UE; monitoring a physical downlink control channel of a cell of a second DRX group for an indication to start a DRX active time for the cell of the second DRX group; as well as during a DRX cycle of the first DRX group associated with the WUS, starting a DRX on duration timer for the second DRX group, wherein the DRX on duration timer for the second DRX group is started based at least in part on: The WUS, monitoring the physical downlink control channel of the cell of the second DRX group for the indication to start the DRX active time for the cell of the second DRX group, and Whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

2. The method of claim 1, wherein monitoring the cell of the first DRX group for the WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

3. The method of claim 1, further comprising: The DRX On Duration timer for the second DRX group is started based at least in part on the second DRX group having the DRX On Duration opportunity during the DRX cycle of the first DRX group.

4. The method of claim 1, further comprising: not starting the DRX On Duration timer for the second DRX group based at least in part on: The received WUS has an indication not to start the DRX on duration timer, or The WUS was not received.

5. The method of claim 1, further comprising: starting a DRX On Duration timer for the first DRX group based at least in part on the WUS, Wherein starting the DRX on duration timer for the first DRX group includes: starting the DRX On Duration timer for the first DRX group based at least in part on the received WUS having an indication that a DRX On Duration timer is to be started, or wherein the DRX on duration timer for the first DRX group is not started based at least in part on: The received WUS has an indication not to start the DRX on duration timer, or The WUS was not received.

6. The method of claim 1, wherein starting the DRX On Duration timer for the second DRX group during the DRX cycle of the first DRX group is independent of a previous WUS associated with a previous DRX cycle of the first DRX group.

7. The method of claim 1, further comprising: receiving configuration information from a base station, the configuration information indicating to the UE that the second DRX group is to have a DRX cycle length longer than a DRX cycle length of the first DRX group, The receiving of the configuration information comprises: The configuration information is received via radio resource control signaling.

8. The method of claim 1 , wherein monitoring the cell of the first DRX group for the WUS comprises: During a DRX active time of the first DRX group, the cells of the first DRX group are monitored for the WUS.

9. The method of claim 8, further comprising: receiving configuration information indicating that the UE is to start a DRX active time for the second DRX group based at least in part on: The WUS received during the DRX active time of the first DRX group indicates that a DRX on duration timer is to be started; as well as The second DRX group has no DRX On duration opportunity during the DRX cycle of the first DRX group.

10. The method of claim 8, further comprising: A DRX active time for the second DRX group is started based at least in part on the WUS and based on whether the second DRX group has a DRX-On duration opportunity during the DRX cycle of the first DRX group.

11. The method of claim 10, further comprising: The DRX active time for the second DRX group is started based at least in part on the received WUS having an indication to start a DRX on duration timer and based on the second DRX group having no on duration opportunity during the DRX cycle of the first DRX group.

12. The method of claim 1, wherein the UE starts the DRX on duration timer for the second DRX group based at least in part on whether the UE monitors the cell of the first DRX group for the WUS during the DRX cycle of the DRX group associated with the WUS.

13. A user equipment UE for wireless communication, comprising: Memory; as well as one or more processors coupled to the memory, the one or more processors configured to: Monitoring a cell of a first discontinuous reception (DRX) group for a wake-up signal WUS based at least in part on a configuration of the UE; monitoring a physical downlink control channel of a cell of a second DRX group for an indication to start a DRX active time for the cell of the second DRX group; as well as during a DRX cycle of the first DRX group associated with the WUS, starting a DRX on duration timer for the second DRX group, wherein the DRX on duration timer for the second DRX group is started based at least in part on: The WUS, monitoring the physical downlink control channel of the cell of the second DRX group for the indication to start the DRX active time for the cell of the second DRX group, and Whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

14. The UE of claim 13, wherein monitoring the cell of the first DRX group for the WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

15. The UE of claim 13, wherein the one or more processors are further configured to: The DRX On Duration timer for the second DRX group is started based at least in part on the second DRX group having the DRX On Duration opportunity during the DRX cycle of the first DRX group.

16. The UE of claim 13, wherein the one or more processors are further configured to: not starting the DRX On Duration timer for the second DRX group based at least in part on: The received WUS has an indication not to start the DRX on duration timer, or The WUS was not received.

17. The UE of claim 13, wherein the one or more processors are further configured to: starting a DRX On Duration timer for the first DRX group based at least in part on the WUS, wherein the one or more processors, when starting the DRX on duration timer for the first DRX group, are configured to: starting the DRX On Duration timer for the first DRX group based at least in part on the received WUS having an indication that a DRX On Duration timer is to be started, or wherein the DRX on duration timer for the first DRX group is not started based at least in part on: The received WUS has an indication not to start the DRX on duration timer, or The WUS was not received.

18. The UE of claim 13, wherein starting the DRX On Duration timer for the second DRX group during the DRX cycle of the first DRX group is independent of a previous WUS associated with a previous DRX cycle of the first DRX group.

19. The UE of claim 13, wherein the one or more processors are further configured to: receiving configuration information from a base station, the configuration information indicating to the UE that the second DRX group is to have a DRX cycle length longer than a DRX cycle length of the first DRX group, wherein the one or more processors are configured to: The configuration information is received via radio resource control signaling.

20. The UE of claim 13, wherein the one or more processors, when monitoring the cell of the first DRX group for the WUS, are configured to: During a DRX active time of the first DRX group, the cells of the first DRX group are monitored for the WUS.

21. The UE of claim 20, wherein the one or more processors are further configured to: receiving configuration information indicating that the UE is to start a DRX active time for the second DRX group based at least in part on: The WUS received during the DRX active time of the first DRX group indicates that a DRX on duration timer is to be started; and The second DRX group has no DRX On duration opportunity during the DRX cycle of the first DRX group.

22. The UE of claim 20, wherein the one or more processors are further configured to: A DRX active time for the second DRX group is started based at least in part on the WUS and based on whether the second DRX group has a DRX-On duration opportunity during the DRX cycle of the first DRX group.

23. The UE of claim 22, wherein the one or more processors are further configured to: The DRX active time for the second DRX group is started based at least in part on the received WUS having an indication to start a DRX on duration timer and based on the second DRX group having no on duration opportunity during the DRX cycle of the first DRX group.

24. The UE of claim 13, wherein the UE starts the DRX on duration timer for the second DRX group during the DRX cycle of the DRX group associated with the WUS based at least in part on whether the UE monitors the cell of the first DRX group for the WUS.

25. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, which when executed by one or more processors of a user equipment UE causes the UE to: Monitoring a cell of a first discontinuous reception (DRX) group for a wake-up signal WUS based at least in part on a configuration of the UE; monitoring a physical downlink control channel of a cell of a second DRX group for an indication to start a DRX active time for the cell of the second DRX group; as well as during a DRX cycle of the first DRX group associated with the WUS, starting a DRX on duration timer for the second DRX group, wherein the DRX on duration timer for the second DRX group is started based at least in part on: The WUS, monitoring the physical downlink control channel of the cell of the second DRX group for the indication to start the DRX active time for the cell of the second DRX group, and Whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

26. The non-transitory computer-readable medium of claim 25, wherein monitoring the cell of the first DRX group for the WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

27. The non-transitory computer-readable medium of claim 25, wherein during the DRX cycle of the DRX group associated with the WUS, the DRX on duration timer for the second DRX group is started based at least in part on whether the UE monitors the cell of the first DRX group for the WUS.

28. The non-transitory computer readable medium of claim 25, wherein starting the DRX On Duration timer for the second DRX group during the DRX cycle of the first DRX group is independent of a previous WUS associated with a previous DRX cycle of the first DRX group.

29. A device for wireless communication, comprising: means for monitoring a cell of a first discontinuous reception (DRX) group for a wake-up signal (WUS) based at least in part on the configuration of the apparatus; means for monitoring a physical downlink control channel of a cell of a second DRX group for an indication to start a DRX active time for the cell of the second DRX group; as well as means for starting a DRX On Duration timer for the second DRX group during a DRX cycle of the first DRX group associated with the WUS, wherein the DRX on duration timer for the second DRX group is started based at least in part on: The WUS, monitoring the physical downlink control channel of the cell of the second DRX group for the indication to start the DRX active time for the cell of the second DRX group, and Whether the second DRX group has a DRX on duration opportunity during the DRX cycle of the first DRX group.

30. The apparatus of claim 29, wherein monitoring the cell of the first DRX group for the WUS is based at least in part on whether the first DRX group is outside of a DRX active time.

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