Enhanced DRX DTX design
Patent Information
- Application Number
- PCT/CN2025/078708
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-08-27
Smart Images

Figure CN2025078708_27082026_PF_FP_ABST
Abstract
Description
ENHANCED DRX DTX DESIGNTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems and, more particularly, to the design and configurations of discontinuous reception (DRX) and discontinuous transmission (DTX) in wireless communication. INTRODUCTION
[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. 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, and time division synchronous code division multiple access (TD-SCDMA) systems.
[0003] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard, and some aspects of future wireless communication technologies may be based on aspects of 5G NR. There exists a need for further improvements in 5G NR technology and future wireless communication technologies. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. BRIEF SUMMARY
[0004] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
[0005] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a first wireless node. In some examples, the first wireless node may be a user equipment (UE) . The apparatus may include one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions to cause the first wireless node to obtain, from a third wireless node, a configuration associated with multiple discontinuous reception (DRX) patterns or multiple discontinuous transmission (DTX) patterns; obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first wireless node and a second wireless node; and communicate with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.
[0006] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a third wireless node. In some examples, the third wireless node may be a network entity. The apparatus may include one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions to cause the third wireless node to output, for transmission to a first wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns; output, for transmission to at least one of the first wireless node or a second wireless node, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first wireless node and the second wireless node; and communicate with at least one of the first wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.
[0007] To the accomplishment of the foregoing and related ends, the one or more aspects may include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a diagram illustrating an example of a wireless communication system and an access network.
[0009] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0010] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0011] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0012] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0013] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
[0014] FIG. 4A is a diagram illustrating an example of a discontinuous reception (DRX) cycle.
[0015] FIG. 4B is a diagram illustrate an example of discontinuous transmission (DTX) patterns.
[0016] FIG. 5A is a diagram illustrating an example of UE cooperation.
[0017] FIG. 5B is a diagram illustrating another example of UE cooperation.
[0018] FIG. 6A is a diagram illustrating an example of a DRX configuration for a packet split scheme.
[0019] FIG. 6B is a diagram illustrating an example of a DRX configuration for a packet split scheme in accordance with various aspects of the present disclosure.
[0020] FIG. 6C is a diagram illustrating an example of a DRX configuration for a packet split scheme in accordance with various aspects of the present disclosure.
[0021] FIG. 7 is a diagram illustrating an example of a DRX configuration for a packet split scheme in accordance with various aspects of the present disclosure.
[0022] FIG. 8 is a call flow diagram illustrating a method of wireless communication in accordance with various aspects of the present disclosure.
[0023] FIG. 9 is a flowchart illustrating methods of wireless communication at a first wireless node in accordance with various aspects of the present disclosure.
[0024] FIG. 10 is a flowchart illustrating methods of wireless communication at a first wireless node in accordance with various aspects of the present disclosure.
[0025] FIG. 11 is a flowchart illustrating methods of wireless communication at a wireless node in accordance with various aspects of the present disclosure.
[0026] FIG. 12 is a flowchart illustrating methods of wireless communication at a wireless node in accordance with various aspects of the present disclosure.
[0027] FIG. 13 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or UE.
[0028] FIG. 14 is a diagram illustrating an example of a hardware implementation for an example network entity.DETAILED DESCRIPTION
[0029] In wireless communication, multiple user equipment (UE) may cooperate to facilitate communication among these UEs and with the network. This cooperation is beneficial in various scenarios, including when a UE faces challenges in supporting services with strict transmission conditions, such as extended reality (XR) , or when the UE experiences poor signal coverage due to shadowing or being located at the cell edge. When multiple UEs operate cooperatively, packet splitting may occur between these UEs, and they may be configured with the same or similar discontinuous reception (DRX) or discontinuous transmission (DTX) settings to maintain proper synchronization of transmitted packets. However, applying a universal DRX or DTX setting to all cooperating UEs may not be efficient in terms of power consumption. Example aspects presented herein provide methods and apparatus for the adaptive configuration for DRX and DTX, and dynamic indication for cooperative UEs based on actual traffic split schemes.
[0030] Various aspects relate generally to wireless communication. Some aspects more specifically relate to the design and configurations of DRX and DTX in wireless communication. In some examples, a first wireless node (e.g., a first UE) may obtain a configuration associated with multiple DRX patterns or multiple DTX patterns from a third wireless node. The first wireless node may further obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and a second wireless node. The first wireless node then communicates with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. In some examples, the first indication may be obtained via a low power wakeup signal (LP-WUS) , and the LP-WUS may include a pattern index associated with the one DRX pattern or the one DTX pattern. In some examples, the LP-WUS may include one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern. In some examples, the first indication of the one DRX pattern or the one DTX pattern may be based on one or more existing bits associated with the LP-WUS.
[0031] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the described techniques enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. In some examples, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the described techniques reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the described techniques ensure continuous DRX / DTX operation, even in challenging network conditions.
[0032] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0033] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements” ) . These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0034] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
[0035] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
[0036] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders / summers, etc. ) . Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
[0037] Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmission reception point (TRP) , or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
[0038] An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) . In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
[0039] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
[0040] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140.
[0041] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near-RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
[0042] In some aspects, the CU 110 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof. In some implementations, the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.
[0043] The DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
[0044] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0045] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
[0046] The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updates, or policy-based guidance of applications / features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
[0047] In some implementations, to generate AI / ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
[0048] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) . The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station) . The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
[0049] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) . D2D communication may be through a variety of wireless D2D communications systems, such as for example, BluetoothTM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG) ) , Wi-FiTM (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
[0050] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
[0051] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
[0052] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz –24.25 GHz) . Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz –71 GHz) , FR4 (71 GHz –114.25 GHz) , and FR5 (114.25 GHz –300 GHz) . Each of these higher frequency bands falls within the EHF band.
[0053] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.
[0054] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
[0055] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
[0056] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position / location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, motion sensor) , NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (Multi-RTT) , DL angle-of-departure (DL-AoD) , DL time difference of arrival (DL-TDOA) , UL time difference of arrival (UL-TDOA) , and UL angle-of-arrival (UL-AoA) positioning) , and / or other systems / signals / sensors.
[0057] Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and / or individually access the network.
[0058] Referring again to FIG. 1, in certain aspects, the UE 104 may include the DRX / DTX component 198. The DRX / DTX component 198 may be configured to obtain, from a network entity, a configuration associated with multiple DRX patterns or multiple DTX patterns; obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the UE and the second UE; and communicate with at least one of the network entity or the second UE based on the one DRX pattern or the one DTX pattern. In certain aspects, the base station 102 may include the DRX / DTX component 199. The DRX / DTX component 199 may be configured to output, for transmission to a first UE, a configuration associated with multiple DRX patterns or multiple DTX patterns; output, for transmission to at least one of the first UE or a second UE, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first UE and the second UE;and communicate with at least one of the first UE or the second UE based on the one DRX pattern or the one DTX pattern. Although the following description may be focused on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.
[0059] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
[0060] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (for power limited scenarios; limited to a single stream transmission) . The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1) . The symbol length / duration may scale with 1 / SCS. Table 1: Numerology, SCS, and CP
[0061] For normal CP (14 symbols / slot) , different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing may be equal to 2μ* 15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of normal CP with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended) .
[0062] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
[0063] As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
[0064] FIG. 2B illustrates an example of various DL channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
[0065] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0066] FIG. 2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK) ) . The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and / or UCI.
[0067] FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, Internet protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0068] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
[0069] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) . The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.
[0070] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0071] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0072] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0073] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
[0074] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0075] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with the DRX / DTX component 198 of FIG. 1.
[0076] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform aspects in connection with the DRX / DTX component 199 of FIG. 1.
[0077] A UE may be configured by a base station for DRX. During an RRC connected state, when there is no data transmission in either direction (UL / DL) , the UE may operate using the DRX mode. In the DRX mode, the UE monitors the PDCCH channel discontinuously using a sleep and wake cycle, e.g., OFF durations and ON durations. When the UE is in an RRC connected state, the DRX may also be referred to as Connected Mode DRX (C-DRX) . DRX conserves battery power at the UE. In a non-DRX mode, the UE monitors for PDCCH in each subframe to check whether there is downlink data available. Continuous monitoring of the PDCCH uses more battery power at the UE.
[0078] The UE may receive a DRX configuration from the network in RRC signaling from a base station, such as in an RRC Connection Setup request or an RRC connection reconfiguration request. A DRX configuration may include the configuration of one or more timers and values. In some examples, the DRX configuration may include any of an ON duration Timer, a DRX inactivity timer, a DRX retransmission timer, a DRX UL retransmission timer, a long DRX cycle, a value of the DRX start offset, a DRX short cycle timer, and / or a short DRX cycle, among others. A DRX cycle may comprise a periodic repetition of an on duration in which the UE monitors for PDCCH from the base station and an off duration. FIG. 4A illustrates an example of a DRX cycle 400. The DRX cycle 400 may include periodic ON durations (e.g., ON duration 402) during which the UE monitors for PDCCH and OFF durations (e.g., OFF duration 404) during which the UE may not monitor for the PDCCH. The OFF duration (e.g., OFF duration 404) may be referred to as a DRX opportunity. During the OFF duration (e.g., OFF duration 404) , the UE does not monitor for PDCCH. The UE may enter a sleep mode or a low power mode in which the UE minimizes power consumption by shutting down a radio frequency (RF) function without detecting communication from the base station.
[0079] The ON duration timer may correspond to a number of consecutive PDCCH subframes to be monitored or decoded when the UE wakes up from the OFF duration (e.g., OFF duration 404) in the DRX cycle. The DRX retransmission timer may correspond to a consecutive number of PDCCH subframes for the UE to monitor when a retransmission is expected by the UE. The DRX inactivity timer may correspond to an amount of time before the UE may again enter the OFF duration (e.g., OFF duration 404) following successfully decoding PDCCH. The amount of time may be in terms of a transmission time interval (TTI) duration. After a UE successfully receives downlink data, the DRX Inactivity Timer may start counting a number of subframes. If any uplink or downlink data transmissions occur while the DRX inactivity timer is running, the timer restarts. If the DRX inactivity timer expires without uplink or downlink activity, the UE may enter the DRX cycle to achieve power savings.
[0080] A cell discontinuous transmission (DTX) configuration may be configured for a cell (e.g., a serving cell) and indicated to UEs served by the cell. A cell DTX configuration indicates a repeating pattern of active periods and non-active periods for the cell. During each non-active period, a UE may reduce monitoring for downlink signals from a base station. In some aspects, based on a cell DTX configuration, a UE may skip monitoring for some PDCCH transmissions, yet may continue to monitor for PDCCH in a common search space (CSS) . A CSS is a search space that multiple UEs (e.g., each UE served by the cell) monitor for signaling that applies to UEs in the cell. In order to maintain accurate reception and / or transmission of wireless communication, a UE may measure characteristics of a radio channel, for example by performing channel measurements on a reference signal such as performing CSI-RS measurements. Such CSI-RS measurement may be used for various purposes, e.g., for determinations about modulation, code rate, beam forming determinations, mobility, frequency and time tracking, among other examples. During a cell DTX non-active period, the UE may skip reception of some CSI-RS, yet may continue to receive and measure other CSI-RS. As an example, a UE may monitor for and receive a tracking reference signal (TRS) while skipping reception of configured reference signals. In some aspects, a UE may receive an indication of a single cell DTX configuration (e.g., a single configuration for cell DTX) , which may be activated or deactivated. It can take time for a network node o signal a cell DTX configuration to the UE. As the network signals a single cell DTX configuration to the UE, the added time for a new cell DTX configuration to be signaled to the UE causes a delay before the new cell DTX configuration can be activated for the UE.
[0081] In some aspects, a DRX or DTX configuration may be configured for a cell. In some aspects, cell DTX may be configured, e.g., if cell DRX is configured. The DTX configuration, for example, may include active periods and non-active periods. FIG. 4B illustrates an example DTX pattern 450 including a repeating (e.g., periodic) pattern of active periods and non-active periods. During a cell DTX non-active period (e.g., non-active period 464) , a UE may skip monitoring for at least some PDCCH. For example, the UE may monitor for PDCCH transmission 452 (e.g., that includes DCI) in an occasion that occurs during the active period (e.g., active period 462) of the DTX pattern, and may skip monitoring for the PDCCH transmission 454 in an occasion that occurs during the non-active period (e.g., non-active period 464) of the DTX pattern. In some aspects, a UE configured for operation on a serving cell according to one or both of a cell DTX operation or a cell DRX operation may be provided a common search space (CSS) to monitor PDCCH for detection of DCI. For example, the UE may monitor Type3-PDCCH CSS set to monitor PDCCH for detection of DCI format 2_9 during a non-active period of the DTX pattern. In some aspects, a UE may not expect to monitor PDCCH for detection of DCI (e.g., DCI format 2_9) on more than one serving cell of one cell group. For example, a UE may monitor for a PDCCH transmission (e.g., a PDCCH transmission including DCI) in a CSS and receive the corresponding PDSCH (e.g., indicated by a received DCI) that occurs, at least partially, during a non-active period.
[0082] During a non-active period (e.g., non-active period 464) of a cell DTX configuration, the UE may receive CSI-RS other than the periodic CSI-RS and semi-persistent CSI-RS configured in CSI report configuration (e.g., in a “CSI-ReportConfig” ) associated with a higher layer parameter associated with a report quantity (e.g., higher layer parameter “reportQuantity” ) comprising at least a rank indicator (RI) .
[0083] Such CSI-RS and TRS may be referred to as a “configured reference signal” or “configured downlink signal, ” as the UE receive a configuration for the CSI-RS and TRS. During a non-active period (e.g., non-active period 464) of a cell DTX configuration, the UE may also receive some cell specific signals such as SSB, and some configured downlink signal, such as TRS.
[0084] In wireless communication, multiple UE may cooperate to facilitate communication among these UEs and with the network. This cooperation is beneficial in various scenarios. For example, one such scenario may arise when an anchor UE faces challenges in supporting services with strict conditions, such as transmissions for extended reality (XR) applications, or when the anchor UE experiences poor signal-to-interference-plus-noise ratio (SINR) or channel quality indicator (CQI) due to shadowing or being located at the cell edge. FIG. 5A is a diagram 500 illustrating an example of UE cooperation. As shown in FIG. 5A, an anchor UE 502 may be located at the edge of the coverage area 510 of the network (e.g., base station 504) . As a result, the anchor UE 502 may have poor SINR or CQI. In this case, the anchor UE 502 may cooperate with a companion UE 506 to facilitate its communication with the network (e.g., base station 504) . For example, the companion UE 506 may rely the communication of the anchor UE 502 to the network (e.g., base station 504) . In some examples, UE cooperation may be beneficial when the anchor UE may have limited capability to process complex uplink and downlink data and perform measurements such as radio resource management (RRM) , synchronization signal block (SSB) detection, and beam management due to factors such as the limited number of active antennas and limited transmission power (e.g., in small-form factor devices) . FIG. 5B is a diagram 550 illustrating another example of UE cooperation. As shown in FIG. 5B, due to limited capability of the anchor UE 552, the network (e.g., base station 554) may split a portion of the communication with the anchor UE 552 at 562 to the companion UE 556 at 564. The companion UE 556 then may transmit the split data it received from the network (e.g., base station 554) to the anchor UE 552 via 566.
[0085] Another scenario where UE cooperation is beneficial is in duplication transmission between the anchor UE and the companion UE, which can enhance transmission reliability to meet applications with strict transmission conditions. For example, in transmissions for XR applications, transmission reliability levels may be as high as 95%, 99%, and even 99.9%or 99.99%. Additionally, UE cooperation may allow a high-capability UE to assists a low-capability UE in performing complex processing tasks, such as RRM. In such cases, the high-capability UE may take over certain processing responsibilities, thereby helping the low-capability UE conserve power while maintaining efficient operation.
[0086] As used herein, transmissions for XR application (or XR traffic) may refer to wireless communications for technologies such as virtual reality (VR) , mixed reality (MR) , and / or augmented reality (AR) . VR may refer to technologies in which a user is immersed in a simulated experience that is similar or different from the real world. A user may interact with a VR system through a VR headset or a multi-projected environment that generates realistic images, sounds, and other sensations that simulate a user’s physical presence in a virtual environment. MR may refer to technologies in which aspects of a virtual environment and a real environment are mixed. AR may refer to technologies in which objects residing in the real world are enhanced via computer-generated perceptual information, sometimes across multiple sensory modalities, such as visual, auditory, haptic, somatosensory, and / or olfactory. An AR system may incorporate a combination of real and virtual worlds, real-time interaction, and accurate three-dimensional registration of virtual objects and real objects. In an example, an AR system may overlay sensory information (e.g., images) onto a natural environment and / or mask real objects from the natural environment. XR traffic may include video data and / or audio data. XR traffic may be transmitted by a base station and received by a UE or the XR traffic may be transmitted by a UE and received by a base station.
[0087] XR traffic may arrive in periodic traffic bursts ( “XR traffic bursts” ) . An XR traffic burst may vary in a number of packets per burst and / or a size of each packet in the burst. XR traffic bursts may arrive at non-integer periods (i.e., in a non-integer cycle) . The periods may be different than an integer number of symbols, slots, etc. Arrival times of XR traffic may vary. For example, XR traffic bursts may arrive and be available for transmission at a time that is earlier or later than a time at which a UE (or a base station) expects the XR traffic bursts. The variability of the packet arrival relative to the period may be referred to as “jitter. ” XR traffic may include multiple flows that arrive at a UE (or a base station) concurrently with one another (or within a threshold period of time) . A second XR flow may have different characteristics than a first XR flow. For instance, the second XR flow may have XR traffic bursts with different numbers of packets, different sizes of packets, etc. In an example, the first XR flow may include video data and the second XR flow may include audio data for the video data. In another example, the first XR flow may include intra-coded picture frames (I-frames) that include complete images and the second XR flow may include predicted picture frames (P-frames) that include changes from a previous image. XR traffic may have an associated packet delay budget (PDB) . If a packet does not arrive within the PDB, a UE (or a base station) may discard the packet. In an example, if a packet corresponding to a video frame of a video does not arrive at a UE within a PDB, the UE may discard the packet, as the video has advanced beyond the frame. XR traffic may be characterized by relatively high data rates and low latency. The latency in XR traffic may affect the user experience. For instance, XR traffic may have applications in eMBB and URLLC services.
[0088] In the scenarios where an anchor UE (e.g., UE 552) and a companion UE (e.g., UE 556) operate cooperatively, packet split may occur. As used herein “packet split” refers to the process of separating traffic packets into multiple paths, each directed to different devices. For example, in the downlink, traffic packets may be split in the application layer, the user plane function (UPF) , and even the base station (e.g., gNB) . Once the traffic packets are split, the anchor UE (e.g., UE 552) and the companion UE (e.g., 556) may receive their respective portions of the traffic packets. Subsequently, the companion UE (e.g., UE 556) may transmit the split packets, via 566, to the anchor UE (e.g., UE 552) to ensure complete data reception.
[0089] To maintain proper synchronization between the packets transmitted by the companion UE (e.g., UE 556) and the anchor UE (e.g., UE 552) , both UEs may be configured with the same or similar DRX / DTX settings. For example, the companion UE (e.g., UE 556) and the anchor UE (e.g., UE 552) may be configured with matching periodicity and offsets to the same starting time point. Additionally, to enhance power efficiency, the ON duration in DRX / DTX (e.g., ON duration 402) may be configured with dynamic mode, allowing them to be dynamically adjusted based on the actual traffic split scheme. Example aspects presented herein provide an adaptive configuration approach for DRX / DTX and a dynamic indication mechanism for cooperative UEs based on actual traffic split schemes. In some aspects, the network configures multiple DRX and DTX patterns for the UE in advance with a semi-static mode via radio resource control (RRC) . The base station (e.g., gNB) then may indicate the suitable selection based on the actual traffic split scheme in the downlink. In some aspects, a low-power wake-up signal (LP-WUS) can be used to indicate both the anchor UE and the companion UE about the wake-up. The LP-WUS may be further enhanced to indicate the DRX patterns based on the actual traffic split scheme for cooperative UEs. In some aspects, in the uplink, the anchor UE may indicate the base station (e.g., gNB) about the traffic split scheme through uplink control information (UCI) , medium access control –control element (MAC CE) , or RRC. In some aspects, an anchor UE may indicate the companion UE about the split scheme using sidelink (SL) or WiFi, so that the companion UE can adjust its sleep and wake-up schedule accordingly.
[0090] FIG. 6A is a diagram 600 illustrating an example of a DRX configuration for a packet split scheme. As shown in FIG. 6A, a packet split scheme may split the packets (e.g., 608) to be transmit to the anchor UE 602 into two sets of packets. The first set of packets 612 may be transmitted to the anchor UE 602 within the timer period T1 632, and the second set of packets 614 may be transmitted to a companion UE 606 within the time period T2 634. The companion UE 606 may then relay the second set of packets 614 to the anchor UE 602. In the example in FIG. 6A, the DRX ON period 622 for the anchor UE 602 and the DRX ON period 626 for the companion UE 606 may span the entire transmission time of the packets 608, including the transmission time (e.g., T1 632) for the first set of packets 612 to the anchor UE 602 and the transmission time (e.g., T2 634) for the second set of packets 614 to the companion UE 606. However, maintaining the DRX ON duration for the transmission time of the entire packet 608 may unnecessarily increase power consumption, as each UE may receive its respective packets within a portion of the transmission time for the entire packet 608. For example, the anchor UE 602 may receive the first set of packets 612 within T1 632 but not in T2 634, and the companion UE 606 may receive the second set of packets 614 within T2 634 but not in T1 632.
[0091] FIG. 6B is a diagram 640 illustrating an example of a DRX configuration for a packet split scheme. In the example in FIG. 6B, the packets 648 to be transmitted to an anchor UE may be split into two sets of packets: the first set of packets 654 for the anchor UE and the second set of packets 652 for the companion UE 646, which will be relayed to the anchor UE. As shown in FIG. 6B, the transmission of the first set of packets 654 to the anchor UE occurs after the transmission of the second set of packets 652 to the companion UE 646. In this case, the companion UE 646 may have a DRX ON duration 656 during the transmission period (e.g., T1 662) of the second set of packets 652, and may transition into a DRX OFF duration 658 after receiving the second set of packets 652. For example, the companion UE 646 may remain in a DRX OFF duration 658 during the transmission period (e.g., T2 664) of the first set of packets 654.
[0092] FIG. 6C is a diagram 670 illustrating an example of a DRX configuration for a packet split scheme. In the example in FIG. 6C, packets 678 to be transmitted to an anchor UE may be split into two sets of packets: the first set of packets 682 for the anchor UE and the second set of packets 684 for the companion UE 676, which will be relayed to the anchor UE. As shown in FIG. 6C, the transmission of the first set of packets 682 to the anchor UE occurs before the transmission of the second set of packets 684 to the companion UE 676. In this case, the companion UE 676 may be in a DRX ON duration 688 during the transmission period (e.g., T2 694) of the second set of packets 684, and the companion UE 676 may remain in a DRX OFF duration 686 during the transmission period (e.g., T1 692) of the first set of packets 682. As shown in FIG. 6B and FIG. 6C, the DRX configurations may be aligned with traffic split schemes to achieve further power savings. While the described solution may use DRX configurations or DRX patterns as examples, the approach is applicable to DTX configurations or DTX patterns. For the sake of conciseness, examples of DTX configurations or DTX patterns are not repeated here.
[0093] In some aspects, the network (e.g., base station) may configure multiple DRX / DTX patterns for the UE in advance using a semi-static mode via RRC. The base station then may indicate the suitable DRX pattern selection based on the actual traffic split scheme in the downlink.
[0094] In some aspects, the base station may select an appropriate DRX pattern based on the known traffic split between the anchor UE (e.g., UE 552) and the companion UE (e.g., UE 556) . In some examples, to ensure that the companion UE can fully receive the split traffic intended for the anchor UE, the ON duration of DRX for the companion UE may be slightly earlier and slightly longer than the duration specified by the actual traffic split. For example, referring to FIG. 6B, the ON duration 656 of DRX for the companion UE 646 may start at T3 666, which may be earlier than the start time T4 668 of the transmission of the second set of packets 652. The duration of the DRX ON duration 656 may be longer than the transmission period (e.g., T1 662) of the second set of packets 652.
[0095] In some aspects, the network may indicate the preferred DRX pattern index to the companion UE (e.g., UE 506, 556, 646, 676) using LP-WUS. For example, when LP-WUS is used to wake up the companion UE (e.g., UE 506, 556, 646, 676) to monitor the physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) for split packets, it may deliver the preferred DRX pattern index to the companion UE (e.g., UE 506, 556, 646, 676) . In some examples, the DRX pattern index may correspond to the ON duration (e.g., ON duration 656, 688) . In some examples, the ON duration indicated by the DRX pattern index may be periodic and may follow a periodicity.
[0096] FIG. 7 is a diagram 700 illustrating an example of a DRX configuration for a packet split scheme in accordance with various aspects of the present disclosure. In the example in FIG. 7, the packets 708 to be transmitted to an anchor UE 702 may be split into two sets of packets: the first set of packets 714 for the anchor UE 702 and the second set of packets 712 for the companion UE 706, which will be relayed to the anchor UE 702. As shown in FIG. 7, the transmission of the second set of packets 712 to the companion UE 706 occurs before and after the transmission of the first set of packets 714 to the anchor UE 702. In this case, the companion UE 706 may have a DRX ON duration 722 and a DRX ON duration 726 during the transmission periods of the second set of packets 712, which may include the transmission period T1 742 and T3 746. The companion UE 706 may transition into a DRX OFF duration 724 in between these two transmission periods of the second set of packets 712. For example, the companion UE 706 may remain in a DRX OFF duration 724 during the transmission period (e.g., T2 744) of the first set of packets 714. On the other hand, the anchor UE 602 may be in a DRX ON duration 734 during the transmission periods of the first set of packets 714 (e.g., T2 744) . The anchor UE 702 may remain in a DRX OFF duration (e.g., 732, 736) during the transmission period (e.g., T1 742, T3 746) of the second set of packets 712 to the companion UE 706.
[0097] In some aspects, the LP-WUS that carries the preferred DRX pattern index may be implemented in different ways. In some examples, a codepoint-based LP-WUS may be used to carry the preferred DRX pattern index. For example, a codepoint value in the LP-WUS may be used to indicate the preferred DRX pattern index. In some examples, a bitmap-based LP-WUS may be used to carry the preferred DRX pattern index. For example, a bit in the bitmap in the LP-WUS may be used to indicate the preferred DRX pattern index.
[0098] In some examples, a single LP-WUS may be used to indicate both the anchor UE (e.g., UE 502, 552, 702) and the companion UE (e.g., UE 506, 556, 706) about the wake-up process and the indication of DRX patterns based on the actual traffic split schemes for cooperative UEs. In one configuration, proprietary bits (e.g., dedicated bits) of an LP-WUS may be used to indicate the preferred DRX patterns for both the anchor UE and companion UE. For example, a specific type of LP-WUS that includes such proprietary bits (or dedicated bits) may be used to indicate the preferred DRX pattern. The number of these bits (e.g., dedicated bits) may correspond to the number of configured DRX patterns. For example, two bits may be used to represent four configured DRX patterns. In another configuration, existing bits in the LP-WUS may be repurposed to indicate the preferred DRX pattern. For example, if the LP-WUS is used for cooperative UEs, and there are extra bits that have not been used in the LP-WUS, these extract bits may be repurposed to indicate the preferred DRX pattern index.
[0099] In some aspects, the network (e.g., base station 504) may indicate the companion UE (e.g., UE 506) to relay a new DRX pattern to the anchor UE (e.g., UE 502) if the anchor UE (e.g., UE 502) is out of coverage (e.g., coverage area 510) . For example, the network (e.g., base station 504) may provide the new DRX pattern to the companion UE (e.g., UE 506) using signaling mechanisms such as downlink control information (DCI) or MAC-CE. Upon receiving this indication, the companion UE (e.g., UE 506) may transmit the received DRX pattern information to the anchor UE (e.g., UE 502) using methods such as sidelink control information (SCI) or WiFi.
[0100] In some aspects, an anchor UE (e.g., UE 502, 552) may transmit information about the traffic split scheme to the network (e.g., base station 504, 554) through uplink control information (UCI) , MAC-CE, or RRC. Based on the received traffic split scheme, the network (e.g., base station 504, 554) may configure smart DRX / DTX patterns for cooperative UEs, ensuring efficient operation. In some aspects, the network (e.g., base station 504, 554) may implement intelligent scheduling for cooperative UEs. For example, the intelligent scheduling may be based on dynamic grant (DG) or configured grant (CG) uplink transmission.
[0101] In some aspects, additional power savings may be achieved for the companion UE (e.g., UE 506, 556) and the anchor UE (e.g., UE 502, 552) . For example, based on the reception of split packets by the companion UE from the anchor UE, the network (e.g., base station 504, 554) may provide an indication of the traffic split scheme to the companion UE (e.g., UE 506, 556) using downlink control information (DCI) or MAC-CE. In response, the companion UE (e.g., UE 506, 556) may adaptively enter sleep and wake-up states in WiFi. For example, the operations of the target wake time (TWT) or PC5 interface may align with the indicated split packets to optimize power consumption.
[0102] In some aspects, if the anchor UE (e.g., UE 502) is out of the coverage area (e.g., coverage area 510) of the network (e.g., base station 504) , the anchor UE (e.g., UE 502) may communicate with the companion UE (e.g., UE 506) to relay the traffic split scheme to the network (e.g., base station 504) . In such cases, the anchor UE (e.g., UE 502) may, via 512, transmit the indication to the companion UE (e.g., UE 506) using SCI or WiFi.
[0103] In some aspects, an anchor UE (e.g., UE 502, 552) may indicate, via 512, 556, the traffic split scheme to the companion UE (e.g., UE 552, 556) using sidelink (SL) or WiFi. This allows the companion UE (e.g., UE 506, 556) to adjust its sleep and wake-up schedule accordingly.
[0104] FIG. 8 is a call flow diagram 800 illustrating a method of wireless communication in accordance with various aspects of this present disclosure. Various aspects are described in connection a first wireless node, a second wireless node, and a third wireless node. As an example, the first wireless node may be UE 806, the second wireless node may be UE 802, and the third wireless node may be base station 804. In some examples, UE 802 may be an anchor UE and UE 806 may be a companion UE in the context of UE cooperation. For example, UE 802 may be UE 502, 552, 702. For example, UE 806 may be UE 506, 556, 646, 676, 706. The base station 804 may be base station 504, 554. The aspects may be performed by the UE 802, UE 806, or the base station 804 in aggregation and / or by one or more components of a base station 804 (e.g., a CU 110, a DU 130, and / or an RU 140) .
[0105] As shown in FIG. 8, at 810, the UE 806 may obtain, from base station 804, a configuration associated with multiple DRX patterns or multiple DTX patterns. For example, referring to FIG. 6B, as an example, the multiple DRX patterns may include the ON duration 656 and OFF duration 658 of the DRX pattern for UE 806. In some examples, the base station 804 may transmit the configuration associated with multiple DRX patterns or multiple DTX patterns to multiple UE, such as UE 802, within its coverage range.
[0106] At 812, the UE 806 may output, for transmission to the base station 804, a split indication. The split indication may indicate the traffic split scheme between UE 802 and UE 806. As an example, shown in FIG. 6B, the traffic split scheme may include splitting the transmissions of packets 648 into the transmissions of the first set of packets 654 for an anchor UE (e.g., UE 802) and the second set of packets 652 for a companion UE (e.g., UE 806) .
[0107] In some examples, at 814, the UE 802 may output (or transmit) an indication of the traffic split scheme to UE 806. For example, the traffic split scheme could be the traffic split scheme shown in FIG. 6B, where the transmissions of packets 648 are split into the transmissions of the first set of packets 654 for an anchor UE (e.g., UE 802) and the second set of packets 652 for a companion UE (e.g., UE 806) .
[0108] At 816, the UE 806 may output (or transmit) the indication of the traffic split scheme to base station 804.
[0109] At 818, the UE 806 may obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication is based on a traffic split scheme between UE 802 and UE 806. In some examples, the first indication may be based on the split indication UE 806 transmits to base station 804 at 812. In some examples, the first indication may be based on the indication of the traffic split scheme UE 806 transmitted to base station 804 at 816. For example, the split indication at 812 or the indication at 816 may indicate a traffic split scheme between UE 802 and UE 806, and the base station may indicate the selected DRX pattern or DTX pattern via the first indication based on the traffic split scheme. In some examples, the base station 804 may, at 818, transmit the first indication to multiple UE, including UE 802, within its coverage range.
[0110] In some examples, the first indication may be included in an LP-WUS 830. For example, the LP-WUS 830 may include a pattern index associated with the one DRX pattern or the one DTX pattern.
[0111] At 820, the UE 806 may receive a relay indication from base station 804. For example, the relay indication may indicate UE 806 to relay the first indication (e.g., at 818) to the UE 802. For example, UE 802 may be outside of the coverage area of base station 804, and, therefore, is not able to communicate with base station 804 directly. In this case, the base station 804 may send the relay indication to UE 806, indicating UE 806 to relay the first indication (e.g., at 818) to UE 802.
[0112] At 822, upon receiving the relay indication from base station 804 at 820, UE 806 may output (or transmit) the first indication to UE 802.
[0113] At 824, the UE 806 may communicate with the base station 804 or UE 802 based on the one DRX pattern or the one DTX pattern (e.g., the one DRX pattern or DTX pattern indicated at 818) .
[0114] FIG. 9 is a flowchart 900 illustrating methods of wireless communication at a first wireless node in accordance with various aspects of the present disclosure. The method may be performed by the first wireless node in collaboration with a second wireless node and a third wireless node. In some example, the third wireless node may be a network entity. The network entity may be a base station, or a component of a base station, in the access network of FIG. 1 or a core network component (e.g., base station 102, 310, 504, 554, 804; or the network entity 1302 in the hardware implementation of FIG. 13) . The first wireless node and the second wireless node may be a UE. The UE may be the UE 104, 350, 502, 506, 552, 556, 702, 706, 802, 806, or the apparatus 1304 in the hardware implementation of FIG. 13. In some examples, the first wireless node may be a companion UE (e.g., UE 506, 556, 646, 676, 706, 806) . In some examples, the second wireless node may be an anchor UE (e.g., UE 502, 552, 702, 802) . By dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the methods enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. Additionally, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the methods reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the methods ensure continuous DRX / DTX operation, even in challenging network conditions.
[0115] As shown in FIG. 9, at 902, the first wireless node may obtain, from the third wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns. FIG. 6B, FIG. 6C, FIG. 7, and FIG. 8 illustrate various aspects of the steps in connection with flowchart 900. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 810, obtain from the third wireless node (e.g., base station 804) a configuration associated with multiple DRX patterns or multiple DTX patterns. Referring to FIG. 6B, as an example, the multiple DRX patterns may include the ON duration 656 and OFF duration 658 of the DRX pattern for UE 806. In some aspects, 902 may be performed by the DRX / DTX component 198.
[0116] At 904, the first wireless node may obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and a second wireless node. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 818, obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node (e.g., UE 806) and the second wireless node (e.g., UE 802) . As an example, shown in FIG. 6B, the traffic split scheme may include splitting the transmissions of packets 648 into the transmissions of the first set of packets 654 for an anchor UE (e.g., UE 802) and the second set of packets 652 for a companion UE (e.g., UE 806) . For example, In some aspects, 904 may be performed by the DRX / DTX component 198.
[0117] At 906, the first wireless node may communicate with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 824, communicate with the third wireless node (e.g., base station 804) or the second wireless node (e.g., UE 802) based on the one DRX pattern or the one DTX pattern. In some aspects, 906 may be performed by the DRX / DTX component 198.
[0118] FIG. 10 is a flowchart 1000 illustrating methods of wireless communication at a first wireless node in accordance with various aspects of the present disclosure. The method may be performed by the first wireless node in collaboration with a second wireless node and a third wireless node. In some examples, the third wireless node may be a network entity. The network entity may be a base station, or a component of a base station, in the access network of FIG. 1 or a core network component (e.g., base station 102, 310, 504, 554, 804; or the network entity 1302 in the hardware implementation of FIG. 13) . The first wireless node and the second wireless node may be a UE. The UE may be the UE 104, 350, 502, 506, 552, 556, 702, 706, 802, 806, or the apparatus 1304 in the hardware implementation of FIG. 13. In some examples, the first wireless node may be a companion UE (e.g., UE 506, 556, 646, 676, 706, 806) . In some examples, the second wireless node may be an anchor UE (e.g., UE 502, 552, 702, 802) . By dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the methods enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. Additionally, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the methods reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the methods ensure continuous DRX / DTX operation, even in challenging network conditions.
[0119] As shown in FIG. 10, at 1002, the first wireless node may obtain, from the third wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns. FIG. 6B, FIG. 6C, FIG. 7, and FIG. 8 illustrate various aspects of the steps in connection with flowchart 1000. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 810, obtain from the third wireless node (e.g., base station 804) a configuration associated with multiple DRX patterns or multiple DTX patterns. Referring to FIG. 6B, as an example, the multiple DRX patterns may include the ON duration 656 and OFF duration 658 of the DRX pattern for UE 806. In some aspects, 1002 may be performed by the DRX / DTX component 198.
[0120] At 1010, the first wireless node may obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and a second wireless node. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 818, obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node (e.g., UE 806) and the second wireless node (e.g., UE 802) . As an example, shown in FIG. 6B, the traffic split scheme may include splitting the transmissions of packets 648 into the transmissions of the first set of packets 654 for an anchor UE (e.g., UE 802) and the second set of packets 652 for a companion UE (e.g., UE 806) . In some aspects, 910 may be performed by the DRX / DTX component 198.
[0121] At 1016, the first wireless node may communicate with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 824, communicate with the third wireless node (e.g., base station 804) or the second wireless node (e.g., UE 802) based on the one DRX pattern or the one DTX pattern. In some aspects, 1016 may be performed by the DRX / DTX component 198.
[0122] In some aspects, the traffic split scheme may include a separation associated with a first transmission from the third wireless node to the first wireless node and a second transmission from the third wireless node to the second wireless node. For example, referring to FIG. 6C, the traffic split scheme may include separating (or splitting) the transmissions of packets 678 into the transmission of the first set of packets 682 for the anchor UE and the transmission of the second set of packets 684 for the companion UE 676.
[0123] In some aspects, the first indication may be obtained via an LP-WUS, and the LP-WUS may include a pattern index associated with the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the first indication (e.g., at 818) may be obtained via an LP-WUS 830. The LP-WUS 830 may include a pattern index associated with the one DRX pattern or the one DTX pattern.
[0124] In some aspects, the pattern index associated with the one DRX pattern may correspond to one or more ON durations. For example, referring to FIG. 6B and FIG. 6C, the pattern index associated with the one DRX pattern may correspond to one or more ON durations (e.g., ON duration 656, 688) .
[0125] In some aspects, the pattern index associated with the one DRX pattern may correspond to multiple ON durations, and the multiple ON durations may have a periodicity. For example, referring to FIG. 4A, the pattern index associated with the one DRX pattern may correspond to multiple ON durations (e.g., multiple ON durations 402) , and the multiple ON durations may have a periodicity.
[0126] In some aspects, one ON duration may be located in a time gap prior to reception of the first transmission from the third wireless node to the first wireless node. For example, referring to FIG. 6B, the start time of ON duration 656 (e.g., T3 666) may be located in a time gap prior to reception time (e.g., T4 668) of the second set of packets 652.
[0127] In some aspects, the LP-WUS may include one of a codepoint-based LP-WUS or a bitmap-based LP-WUS. In some aspects, the codepoint-based LP-WUS may include a codepoint value that indicates the first wireless node. In some aspects, the bitmap-based LP-WUS may include a bitmap or a bit of the bitmap that indicates the first wireless node. For example, referring to FIG. 8, the LP-WUS 830 may include one of a codepoint-based LP-WUS or a bitmap-based LP-WUS. In some aspects, the codepoint-based LP-WUS (e.g., LP-WUS 830) may include a codepoint value that indicates the first wireless node. In some aspects, the bitmap-based LP-WUS (e.g., LP-WUS 830) may include a bitmap or a bit of the bitmap that indicates the first wireless node.
[0128] In some aspects, the LP-WUS may include one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the LP-WUS 830 may include one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern.
[0129] In some aspects, the quantity of the one or more dedicated bits may be based on a first quantity of the multiple DRX patterns or a second quantity of the multiple DTX patterns. For example, referring to FIG. 8, the quantity of the one or more dedicated bits (e.g., in LP-WUS 830) may be based on the quantity of the multiple DRX patterns or the quantity of the multiple DTX patterns. For example, if the quantity of the DRX patterns (or DTX patterns) is 4, two dedicated bits in LP-WUS 830 may be used to indicate the one DRX pattern or the one DTX pattern. If the quantity of the DRX patterns (or DTX patterns) is 8, three dedicated bits in LP-WUS 830 may be used to indicate the one DRX pattern or the one DTX pattern.
[0130] In some aspects, the first indication of the one DRX pattern or the one DTX pattern may be based on one or more existing bits associated with the LP-WUS. For example, referring to FIG. 8, the first indication of the one DRX pattern or the one DTX pattern may be based on one or more existing bits associated with the LP-WUS 830.
[0131] In some aspects, the first wireless node may, at 1012, obtain, from the third wireless node, a relay indication to relay the first indication to the second wireless node. At 1014, the first wireless node may output the first indication. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 820, obtain, from the third wireless node (e.g., base station 804) , a relay indication to relay the first indication to the second wireless node (e.g., UE 820) . At 822, the first wireless node (e.g., UE 806) may output the first indication to the second wireless node (UE 802) . In some aspects, 1012 and 1014 may be performed by the DRX / DTX component 198.
[0132] In some aspects, the first wireless node may, at 1006, obtain from the second wireless node a second indication of the traffic split scheme. The first wireless node may, at 1008, output to the third wireless node the second indication of the traffic split scheme. In some aspects, the first wireless node may, at 1016, communicate with the second wireless node based on the second indication. The ON period and the OFF period of the second wireless node may be based on the second indication. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 814, obtain from the second wireless node (e.g., UE 802) an indication of the traffic split scheme. The first wireless node (e.g., UE 806) may, at 816, output to the third wireless node (e.g., base station 804) the indication of the traffic split scheme. In some aspects, the first wireless node (e.g., UE 806) may, at 824, communicate with the second wireless node (e.g., UE 802) based on the second indication. In some aspects, 1006 and 1008 may be performed by the DRX / DTX component 198.
[0133] In some aspects, at 1004, the first wireless node may output, for transmission to the third wireless node, a split indication of the traffic split scheme. The first indication (e.g., at 1010) may be based on the split indication. For example, referring to FIG. 8, the first wireless node (e.g., UE 806) may, at 812, output, for transmission to the third wireless node (e.g., base station 804) , a split indication of the traffic split scheme. The first indication (e.g., at 818) may be based on the split indication. In some aspects, 1004 may be performed by the DRX / DTX component 198.
[0134] FIG. 11 is a flowchart 1100 illustrating methods of wireless communication at a wireless node in accordance with various aspects of the present disclosure. The method may be performed by the wireless node in collaboration with a first wireless node and a second wireless node. The wireless node may be a network entity. For example, the network entity may be a base station, or a component of a base station, in the access network of FIG. 1 or a core network component (e.g., base station 102, 310, 504, 554, 804; or the network entity 1302 in the hardware implementation of FIG. 13) . The first wireless node and the second wireless node may be a UE. The UE may be the UE 104, 350, 502, 506, 552, 556, 702, 706, 802, 806, or the apparatus 1304 in the hardware implementation of FIG. 13. By dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the methods enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. Additionally, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the methods reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the methods ensure continuous DRX / DTX operation, even in challenging network conditions.
[0135] As shown in FIG. 11, at 1102, the wireless node may output, for transmission to a first wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns. FIG. 6B, FIG. 6C, FIG. 7, and FIG. 8 illustrate various aspects of the steps in connection with flowchart 1100. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 810, output for transmission to a first wireless node (e.g., UE 806) a configuration associated with multiple DRX patterns or multiple DTX patterns. In some aspects, 1102 may be performed by performed by the DRX / DTX component 199.
[0136] At 1104, the wireless node may output, for transmission to at least one of the first wireless node or the second wireless node, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and the second wireless node. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 818, output, for transmission to at least one of the first wireless node (e.g., UE 806) or the second wireless node (e.g., UE 802) , a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and the second wireless node. In some aspects, 1104 may be performed by performed by the DRX / DTX component 199.
[0137] At 1106, the wireless node may communicate with at least one of the first wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 824, communicate with at least one of the first wireless node (e.g., UE 806) or the second wireless node (e.g., UE 802) based on the one DRX pattern or the one DTX pattern. In some aspects, 1106 may be performed by performed by the DRX / DTX component 199.
[0138] FIG. 12 is a flowchart 1200 illustrating methods of wireless communication at a wireless node in accordance with various aspects of the present disclosure. The method may be performed by the wireless node in collaboration with a first wireless node and a second wireless node. The wireless node may be a base station, or a component of a base station, in the access network of FIG. 1 or a core network component (e.g., base station 102, 310, 504, 554, 804; or the network entity 1302 in the hardware implementation of FIG. 13) . The first wireless node and the second wireless node may be a UE. The UE may be the UE 104, 350, 502, 506, 552, 556, 702, 706, 802, 806, or the apparatus 1304 in the hardware implementation of FIG. 13. By dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the methods enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. Additionally, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the methods reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the methods ensure continuous DRX / DTX operation, even in challenging network conditions.
[0139] As shown in FIG. 12, at 1202, the wireless node may output, for transmission to a first wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns. FIG. 6B, FIG. 6C, FIG. 7, and FIG. 8 illustrate various aspects of the steps in connection with flowchart 1200. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 810, output for transmission to a first wireless node (e.g., UE 806) a configuration associated with multiple DRX patterns or multiple DTX patterns. In some aspects, 1202 may be performed by performed by the DRX / DTX component 199.
[0140] At 1204, the wireless node may output, for transmission to at least one of the first wireless node or the second wireless node, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and the second wireless node. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 818, output, for transmission to at least one of the first wireless node (e.g., UE 806) or the second wireless node (e.g., UE 802) , a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns. The first indication may be based on a traffic split scheme between the first wireless node and the second wireless node. In some aspects, 1204 may be performed by performed by the DRX / DTX component 199.
[0141] At 1206, the wireless node may communicate with at least one of the first wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the wireless node (e.g., base station 804) may, at 824, communicate with at least one of the first wireless node (e.g., UE 806) or the second wireless node (e.g., UE 802) based on the one DRX pattern or the one DTX pattern. In some aspects, 1206 may be performed by performed by the DRX / DTX component 199.
[0142] In some aspects, the traffic split scheme may include a separation associated with a first transmission from the wireless node to the first wireless node and a second transmission from the wireless node to the second wireless node. For example, referring to FIG. 6C, the traffic split scheme may include separating (or splitting) the transmissions of packets 678 into the transmission of the first set of packets 682 for the anchor UE and the transmission of the second set of packets 684 for the companion UE 676.
[0143] In some aspects, the wireless node may output the first indication (e.g., at 1204) based on (e.g., at 1210) whether the first wireless node is inside the coverage range of the wireless node. For example, if the first wireless node is inside the coverage range of the wireless node, the wireless node may, at 1212, output the first indication to the first wireless node. On the other hand, if the first wireless node is outside of the coverage range of the wireless node, the wireless node may, at 1214, output a relay indication to the second wireless node to indicate the second wireless node to relay the first indication to the first wireless node. For example, referring to FIG. 8, if UE 802 is inside the coverage range of the wireless node (e.g., base station 804) , the wireless node may, at 818, output the first indication to UE 802. On the other hand, if UE 802 is outside of the coverage range of the wireless node (e.g., base station 804) , the wireless node (e.g., base station 804) may, at 820, output a relay indication to UE 806 to indicate UE 806 to relay the first indication to UE 802.
[0144] In some aspects, the first indication is indicated in an LP-WUS. The LP-WUS may include a pattern index associated with the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the first indication (e.g., at 818) may be obtained via an LP-WUS 830. The LP-WUS 830 may include a pattern index associated with the one DRX pattern or the one DTX pattern.
[0145] In some aspects, the pattern index associated with the one DRX pattern may correspond to one or more ON durations. For example, referring to FIG. 6B and FIG. 6C, the pattern index associated with the one DRX pattern may correspond to one or more ON durations (e.g., ON duration 656, 688) .
[0146] In some aspects, the pattern index associated with the one DRX pattern may correspond to multiple ON durations, and the multiple ON durations may have a periodicity. For example, referring to FIG. 4A, the pattern index associated with the one DRX pattern may correspond to multiple ON durations (e.g., multiple ON durations 402) , and the multiple ON durations may have a periodicity.
[0147] In some aspects, one ON duration may be located in a time gap prior to reception of the first transmission from the wireless node to the first wireless node. For example, referring to FIG. 6B, the start time of ON duration 656 (e.g., T3 666) may be located in a time gap prior to reception time (e.g., T4 668) of the second set of packets 652.
[0148] In some aspects, the LP-WUS may include one of a codepoint-based LP-WUS or a bitmap-based LP-WUS. In some aspects, the codepoint-based LP-WUS may include a codepoint value that indicates the first wireless node. In some aspects, the bitmap-based LP-WUS may include a bitmap or a bit of the bitmap that indicates the first wireless node. For example, referring to FIG. 8, the LP-WUS 830 may include one of a codepoint-based LP-WUS or a bitmap-based LP-WUS. In some aspects, the codepoint-based LP-WUS (e.g., LP-WUS 830) may include a codepoint value that indicates the first wireless node. In some aspects, the bitmap-based LP-WUS (e.g., LP-WUS 830) may include a bitmap or a bit of the bitmap that indicates the first wireless node.
[0149] In some aspects, the LP-WUS may include one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern. For example, referring to FIG. 8, the LP-WUS 830 may include one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern.
[0150] In some aspects, the quantity of the one or more dedicated bits may be based on a first quantity of the multiple DRX patterns or a second quantity of the multiple DTX patterns. For example, referring to FIG. 8, the quantity of the one or more dedicated bits (e.g., in LP-WUS 830) may be based on the quantity of the multiple DRX patterns or the quantity of the multiple DTX patterns. For example, if the quantity of the DRX patterns (or DTX patterns) is 4, two dedicated bits in LP-WUS 830 may be used to indicate the one DRX pattern or the one DTX pattern. If the quantity of the DRX patterns (or DTX patterns) is 8, three dedicated bits in LP-WUS 830 may be used to indicate the one DRX pattern or the one DTX pattern.
[0151] In some aspects, the first indication of the one DRX pattern or the one DTX pattern may be based on one or more existing bits associated with the LP-WUS. For example, referring to FIG. 8, the first indication of the one DRX pattern or the one DTX pattern may be based on one or more existing bits associated with the LP-WUS 830.
[0152] FIG. 13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1304. The apparatus 1304 may be a first wireless node. For example, the first wireless node may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1304 may include at least one cellular baseband processor (or processing circuitry) 1324 (also referred to as a modem) coupled to one or more transceivers 1322 (e.g., cellular RF transceiver) . The cellular baseband processor (s) (or processing circuitry) 1324 may include at least one on-chip memory (or memory circuitry) 1324'. In some aspects, the apparatus 1304 may further include one or more subscriber identity modules (SIM) cards 1320 and at least one application processor (or processing circuitry) 1306 coupled to a secure digital (SD) card 1308 and a screen 1310. The application processor (s) (or processing circuitry) 1306 may include on-chip memory (or memory circuitry) 1306'. In some aspects, the apparatus 1304 may further include a Bluetooth module 1312, a WLAN module 1314, an SPS module 1316 (e.g., GNSS module) , one or more sensor modules 1318 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and / or accelerometer (s) ; magnetometer, audio and / or other technologies used for positioning) , additional memory modules 1326, a power supply 1330, and / or a camera 1332. The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include their own dedicated antennas and / or utilize the antennas 1380 for communication. The cellular baseband processor (s) (or processing circuitry) 1324 communicates through the transceiver (s) 1322 via one or more antennas 1380 with the UE 104 and / or with an RU associated with a network entity 1302. The cellular baseband processor (s) (or processing circuitry) 1324 and the application processor (s) (or processing circuitry) 1306 may each include a computer-readable medium / memory (or memory circuitry) 1324', 1306', respectively. The additional memory modules 1326 may also be considered a computer-readable medium / memory (or memory circuitry) . Each computer-readable medium / memory (or memory circuitry) 1324', 1306', 1326 may be non-transitory. The cellular baseband processor (s) (or processing circuitry) 1324 and the application processor (s) (or processing circuitry) 1306 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory (or memory circuitry) . The software, when executed by the cellular baseband processor (s) (or processing circuitry) 1324 / application processor (s) (or processing circuitry) 1306, causes the cellular baseband processor (s) (or processing circuitry) 1324 / application processor (s) (or processing circuitry) 1306 to perform the various functions described supra. The cellular baseband processor (s) (or processing circuitry) 1324 and the application processor (s) (or processing circuitry) 1306 are configured to perform the various functions described supra based at least in part of the information stored in the memory (or memory circuitry) . That is, the cellular baseband processor (s) (or processing circuitry) 1324 and the application processor (s) (or processing circuitry) 1306 may be configured to perform a first subset of the various functions described supra without information stored in the memory and may be configured to perform a second subset of the various functions described supra based on the information stored in the memory. The computer-readable medium / memory (or memory circuitry) may also be used for storing data that is manipulated by the cellular baseband processor (s) (or processing circuitry) 1324 / application processor (s) (or processing circuitry) 1306 when executing software. The cellular baseband processor (s) (or processing circuitry) 1324 / application processor (s) (or processing circuitry) 1306 may be a component of the UE 350 and may include the at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the apparatus 1304 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) (or processing circuitry) 1324 and / or the application processor (s) (or processing circuitry) 1306, and in another configuration, the apparatus 1304 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1304.
[0153] As discussed supra, the component 198 may be configured to obtain, from a network entity, a configuration associated with multiple DRX patterns or multiple DTX patterns; obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first UE and a second UE; and communicate with at least one of the network entity or the second UE based on the one DRX pattern or the one DTX pattern. The component 198 may be further configured to perform any of the aspects described in connection with the flowcharts in FIG. 9 and FIG. 10, and / or performed by the UE 806 in FIG. 8. The component 198 may be within the cellular baseband processor (s) (or processing circuitry) 1324, the application processor (s) (or processing circuitry) 1306, or both the cellular baseband processor (s) (or processing circuitry) 1324 and the application processor (s) (or processing circuitry) 1306. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1304 may include a variety of components configured for various functions. In one configuration, the apparatus 1304, and in particular the cellular baseband processor (s) (or processing circuitry) 1324 and / or the application processor (s) (or processing circuitry) 1306, includes means for obtaining, from a network entity, a configuration associated with multiple DRX patterns or multiple DTX patterns, means for obtaining a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first UE and a second UE, and means for communicating with at least one of the network entity or the second UE based on the one DRX pattern or the one DTX pattern. The apparatus 1304 may further include means for performing any of the aspects described in connection with the flowcharts in FIG. 9 and FIG. 10, and / or aspects performed by the UE 806 in FIG. 8. The means may be the component 198 of the apparatus 1304 configured to perform the functions recited by the means. As described supra, the apparatus 1304 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.
[0154] FIG. 14 is a diagram 1400 illustrating an example of a hardware implementation for a network entity 1402. The network entity 1402 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1402 may include at least one of a CU 1410, a DU 1430, or an RU 1440. For example, depending on the layer functionality handled by the component 199, the network entity 1402 may include the CU 1410; both the CU 1410 and the DU 1430; each of the CU 1410, the DU 1430, and the RU 1440; the DU 1430; both the DU 1430 and the RU 1440; or the RU 1440. The CU 1410 may include at least one CU processor (or processing circuitry) 1412. The CU processor (s) (or processing circuitry) 1412 may include on-chip memory (or memory circuitry) 1412'. In some aspects, the CU 1410 may further include additional memory modules 1414 and a communications interface 1418. The CU 1410 communicates with the DU 1430 through a midhaul link, such as an F1 interface. The DU 1430 may include at least one DU processor (or processing circuitry) 1432. The DU processor (s) (or processing circuitry) 1432 may include on-chip memory (or memory circuitry) 1432'. In some aspects, the DU 1430 may further include additional memory modules 1434 and a communications interface 1438. The DU 1430 communicates with the RU 1440 through a fronthaul link. The RU 1440 may include at least one RU processor (or processing circuitry) 1442. The RU processor (s) (or processing circuitry) 1442 may include on-chip memory (or memory circuitry) 1442'. In some aspects, the RU 1440 may further include additional memory modules 1444, one or more transceivers 1446, antennas 1480, and a communications interface 1448. The RU 1440 communicates with the UE 104. The on-chip memory (or memory circuitry) 1412', 1432', 1442' and the additional memory modules 1414, 1434, 1444 may each be considered a computer-readable medium / memory (or memory circuitry) . Each computer-readable medium / memory (or memory circuitry) may be non-transitory. Each of the processors (or processing circuitry) 1412, 1432, 1442 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory (or memory circuitry) . The software, when executed by the corresponding processor (s) (or processing circuitry) causes the processor (s) (or processing circuitry) to perform the various functions described supra. The computer-readable medium / memory (or memory circuitry) may also be used for storing data that is manipulated by the processor (s) (or processing circuitry) when executing software.
[0155] As discussed supra, the component 199 may be configured to output, for transmission to a first UE, a configuration associated with multiple DRX patterns or multiple DTX patterns; output, for transmission to at least one of the first UE or a second UE, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first UE and the second UE; and communicate with at least one of the first UE or the second UE based on the one DRX pattern or the one DTX pattern. The component 199 may be further configured to perform any of the aspects described in connection with the flowcharts in FIG. 11 and FIG. 12, and / or performed by the base station 804 in FIG. 8. The component 199 may be within one or more processors (or processing circuitry) of one or more of the CU 1410, DU 1430, and the RU 1440. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1402 may include a variety of components configured for various functions. In one configuration, the network entity 1402 includes means for outputting, for transmission to a first UE, a configuration associated with multiple DRX patterns or multiple DTX patterns, means for outputting, for transmission to at least one of the first UE or a second UE, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first UE and the second UE, and means for communicating with at least one of the first UE or the second UE based on the one DRX pattern or the one DTX pattern. The network entity 1402 may further include means for performing any of the aspects described in connection with the flowcharts in FIG. 11 and FIG. 12, and / or aspects performed by the base station 804 in FIG. 8. The means may be the component 199 of the network entity 1402 configured to perform the functions recited by the means. As described supra, the network entity 1402 may include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.
[0156] This disclosure provides a method for wireless communication at a first wireless node. The method may include obtaining, from a third wireless node, a configuration associated with multiple DRX patterns or multiple DTX patterns; obtaining a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, where the first indication is based on a traffic split scheme between the first wireless node and a second wireless node; and communicating with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern. By dynamically configuring DRX / DTX patterns based on real-time traffic split schemes, the methods enhance power consumption efficiency by allowing UEs to transition into low-power states more effectively while ensuring timely data transmission. Additionally, by utilizing low-power wake-up signals (LP-WUS) to indicate DRX / DTX patterns, the methods reduce unnecessary monitoring by the UE, further improving power savings without compromising connectivity. In some examples, by enabling the companion UE to relay DRX / DTX pattern updates to the anchor UE when the anchor UE is out of coverage, the methods ensure continuous DRX / DTX operation, even in challenging network conditions.
[0157] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.
[0158] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor (i.e., a set of one or more processor P) is configured to perform a set of functions F, each processor of P may be configured to perform a subset S of F, where Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. A processor may be referred to as processor circuitry. A memory / memory module may be referred to as memory circuitry. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data or “provide” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
[0159] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
[0160] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0161] Aspect 1: A method of wireless communication at a first wireless node. The method includes obtaining, from a third wireless node, a configuration associated with multiple discontinuous reception (DRX) patterns or multiple discontinuous transmission (DTX) patterns; obtaining a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, wherein the first indication is based on a traffic split scheme between the first wireless node and a second wireless node; and communicating with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.
[0162] Aspect 2: The method of aspect 1, wherein the traffic split scheme includes a separation associated with a first transmission from the third wireless node to the first wireless node and a second transmission from the third wireless node to the second wireless node.
[0163] Aspect 3: The method of any of aspects 1-2, wherein the first indication is obtained via a low power wakeup signal (LP-WUS) , and wherein the LP-WUS includes a pattern index associated with the one DRX pattern or the one DTX pattern.
[0164] Aspect 4: The method of aspect 3, wherein the pattern index associated with the one DRX pattern corresponds to one or more ON durations.
[0165] Aspect 5: The method of aspect 4, wherein the pattern index associated with the one DRX pattern corresponds to multiple ON durations, and wherein the multiple ON durations have a periodicity.
[0166] Aspect 6: The method of aspect 4, wherein one ON duration is located in a time gap prior to reception of the first transmission from the third wireless node to the first wireless node.
[0167] Aspect 7: The method of any of aspects 3 to 6, wherein at least one of: the LP-WUS includes one of a codepoint-based LP-WUS or a bitmap-based LP-WUS; the codepoint-based LP-WUS includes a codepoint value that indicates the first wireless node and the bitmap-based LP-WUS includes a bitmap or a bit of the bitmap indicates the first wireless node.
[0168] Aspect 8: The method of aspect 3, wherein the LP-WUS includes one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern.
[0169] Aspect 9: The method of aspect 8, wherein a quantity of the one or more dedicated bits is based on a first quantity of the multiple DRX patterns or a second quantity of the multiple DTX patterns.
[0170] Aspect 10: The method of any of aspects 1 to 3, wherein the first indication of the one DRX pattern or the one DTX pattern is based on one or more existing bits associated with the LP-WUS.
[0171] Aspect 11: The method of any of aspects 1 to 10, wherein the method further includes obtaining, from the third wireless node, a relay indication to relay the first indication to the second wireless node; and outputting, after receiving the relay indication, the first indication.
[0172] Aspect 12 is the method of any of aspects 1 to 10, wherein the method further includes at least one of: obtaining, from the second wireless node, a second indication of the traffic split scheme, outputting, for transmission to the third wireless node, the second indication of the traffic split scheme, or communicating with the second wireless node based on the second indication, wherein an ON period and an OFF period of the second wireless node are based on the second indication.
[0173] Aspect 13: The method of any of aspects 1 to 12, wherein the method further includes outputting, for transmission to the third wireless node, a split indication of the traffic split scheme, wherein the first indication is based on the split indication.
[0174] Aspect 14: A method of wireless communication at a third wireless node. The method includes outputting, for transmission to a first wireless node, a configuration associated with multiple discontinuous reception (DRX) patterns or multiple discontinuous transmission (DTX) patterns; outputting, for transmission to at least one of the first wireless node or a second wireless node, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, wherein the first indication is based on a traffic split scheme between the first wireless node and the second wireless node; and communicating with at least one of the first wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.
[0175] Aspect 15: The method of aspect 14, wherein the traffic split scheme includes a separation associated with a first transmission from the third wireless node to the first wireless node and a second transmission from the third wireless node to the second wireless node.
[0176] Aspect 16: The method of any of aspects 14 to 15, wherein outputting the first indication comprises: outputting, in response to the first wireless node being inside of a coverage range of the third wireless node, the first indication to the first wireless node; or outputting, in response to the first wireless node being outside of the coverage range of the third wireless node, a relay indication to the second wireless node to indicate the second wireless node to relay the first indication to the first wireless node.
[0177] Aspect 17: The method of any of aspects 14 to 15, wherein the first indication is indicated in a low power wakeup signal (LP-WUS) , wherein the LP-WUS includes a pattern index associated with the one DRX pattern or the one DTX pattern.
[0178] Aspect 18: The method of aspect 17, wherein the pattern index associated with the one DRX pattern corresponds to one or more ON durations.
[0179] Aspect 19: The method of aspect 18, wherein the pattern index associated with the one DRX pattern corresponds to multiple ON durations, and wherein the multiple ON durations have a periodicity.
[0180] Aspect 20: The method of aspect 18, wherein one ON duration is located in a time gap prior to reception of the first transmission from the third wireless node to the first wireless node.
[0181] Aspect 21: The method of aspect 17, wherein at least one of: the LP-WUS includes one of a codepoint-based LP-WUS or a bitmap-based LP-WUS; the codepoint-based LP-WUS includes a codepoint value that indicates the first wireless node and the bitmap-based LP-WUS includes a bitmap or a bit of the bitmap indicates the first wireless node.
[0182] Aspect 22: The method of aspect 17, wherein the LP-WUS includes one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern.
[0183] Aspect 23: The method of aspect 22, wherein a quantity of the one or more dedicated bits is based on a first quantity of the multiple DRX patterns or a second quantity of the multiple DTX patterns.
[0184] Aspect 24: The method of aspect 17, wherein the first indication of the one DRX pattern or the one DTX pattern is based on one or more existing bits associated with the LP-WUS.
[0185] Aspect 25: An apparatus for wireless communications, comprising: one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions and cause the apparatus to perform a method in accordance with any one of Aspects 1-13.
[0186] Aspect 26: An apparatus for wireless communications, comprising: one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions and cause the apparatus to perform a method in accordance with any one of Aspects 14-24.
[0187] Aspect 27: A wireless node (e.g., UE) , comprising: at least one transceiver; one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions and cause the wireless node (e.g., UE) to perform a method in accordance with any one of Aspects 1-13, wherein the at least one transceiver is configured to obtain the configuration associated with the multiple DRX patterns or the multiple DTX patterns.
[0188] Aspect 28: A wireless node (e.g., network entity) , comprising: at least one transceiver; one or more memories, individually or in combination, having instructions; and one or more processors, individually or in combination, configured to execute the instructions and cause the wireless node (e.g., network entity) to perform a method in accordance with any one of Aspects 14-24, wherein the at least one transceiver is configured to output the configuration associated with the multiple DRX patterns and the multiple DTX patterns.
[0189] Aspect 29: An apparatus for wireless communications, comprising means for performing a method in accordance with any one of Aspects 1-13.
[0190] Aspect 30: An apparatus for wireless communications, comprising means for performing a method in accordance with any one of Aspects 14-24.
[0191] Aspect 31: A non-transitory computer-readable medium comprising instructions that, when executed by an apparatus, cause the apparatus to perform a method in accordance with any one of Aspects 1-13.
[0192] Aspect 32: A non-transitory computer-readable medium comprising instructions that, when executed by an apparatus, cause the apparatus to perform a method in accordance with any one of Aspects 14-24.
Claims
1.An apparatus for wireless communication comprising:one or more memories, individually or in combination, having instructions; andone or more processors, individually or in combination, configured to execute the instructions and cause the apparatus to:obtain, from a third wireless node, a configuration associated with multiple discontinuous reception (DRX) patterns or multiple discontinuous transmission (DTX) patterns;obtain a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, wherein the first indication is based on a traffic split scheme between a first wireless node and a second wireless node; andcommunicate with at least one of the third wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.2.The apparatus of claim 1, wherein the traffic split scheme includes a separation associated with a first transmission from the third wireless node to the first wireless node and a second transmission from the third wireless node to the second wireless node.3.The apparatus of claim 2, wherein the first indication is obtained via a low power wakeup signal (LP-WUS) , and wherein the LP-WUS includes a pattern index associated with the one DRX pattern or the one DTX pattern.4.The apparatus of claim 3, wherein the pattern index associated with the one DRX pattern corresponds to one or more ON durations.5.The apparatus of claim 4, wherein the pattern index associated with the one DRX pattern corresponds to multiple ON durations, and wherein the multiple ON durations have a periodicity.6.The apparatus of claim 4, wherein one ON duration is located in a time gap prior to reception of the first transmission from the third wireless node to the first wireless node.7.The apparatus of claim 3, wherein at least one of:the LP-WUS includes one of a codepoint-based LP-WUS or a bitmap-based LP-WUS; orthe codepoint-based LP-WUS includes a codepoint value that indicates the first wireless node and the bitmap-based LP-WUS includes a bitmap or a bit of the bitmap indicates the first wireless node.8.The apparatus of claim 3, wherein the LP-WUS includes one or more dedicated bits corresponding to the first indication of the one DRX pattern or the one DTX pattern.9.The apparatus of claim 8, wherein a quantity of the one or more dedicated bits is based on a first quantity of the multiple DRX patterns or a second quantity of the multiple DTX patterns.10.The apparatus of claim 3, wherein the first indication of the one DRX pattern or the one DTX pattern is based on one or more existing bits associated with the LP-WUS.11.The apparatus of claim 1, wherein the one or more processors, individually or in combination, is configured to:obtain, from the third wireless node, a relay indication to relay the first indication to the second wireless node; andoutput, after receiving the relay indication, the first indication.12.The apparatus of claim 1, wherein the one or more processors, individually or in combination, is further configured to:obtain, from the second wireless node, a second indication of the traffic split scheme,output, for transmission to the third wireless node, the second indication of the traffic split scheme, orcommunicate with the second wireless node based on the second indication, wherein an ON period and an OFF period of the second wireless node are based on the second indication.13.The apparatus of claim 1, wherein the one or more processors, individually or in combination, is further configured to:output, for transmission to the third wireless node, a split indication of the traffic split scheme, wherein the first indication is based on the split indication.14.An apparatus for wireless communication, comprising:one or more memories, individually or in combination, having instructions; andone or more processors, individually or in combination, configured to execute the instructions and cause the apparatus to:output, for transmission to a first wireless node, a configuration associated with multiple discontinuous reception (DRX) patterns or multiple discontinuous transmission (DTX) patterns;output, for transmission to at least one of the first wireless node or a second wireless node, a first indication of one DRX pattern of the multiple DRX patterns or one DTX pattern of the multiple DTX patterns, wherein the first indication is based on a traffic split scheme between the first wireless node and the second wireless node; andcommunicate with at least one of the first wireless node or the second wireless node based on the one DRX pattern or the one DTX pattern.15.The apparatus of claim 14, wherein the traffic split scheme includes a separation associated with a first transmission from a third wireless node to the first wireless node and a second transmission from the third wireless node to the second wireless node.16.The apparatus of claim 15, wherein to output the first indication, the one or more processors, individually or in combination, is configured to:output, in response to the first wireless node being inside of a coverage range of the third wireless node, the first indication to the first wireless node, oroutput, in response to the first wireless node being outside of the coverage range of the third wireless node, a relay indication to the second wireless node to indicate the second wireless node to relay the first indication to the first wireless node.17.The apparatus of claim 15, wherein the first indication is indicated in a low power wakeup signal (LP-WUS) , wherein the LP-WUS includes a pattern index associated with the one DRX pattern or the one DTX pattern.18.The apparatus of claim 17, wherein the pattern index associated with the one DRX pattern corresponds to one or more ON durations.19.The apparatus of claim 18, wherein the pattern index associated with the one DRX pattern corresponds to multiple ON durations, and wherein the multiple ON durations have a periodicity.20.The apparatus of claim 18, wherein one ON duration is located a time gap prior to reception of the first transmission from the third wireless node to the first wireless node.