Aligning user equipment (UE) discontinuous reception (DRX) with cell discontinuous transmission (DTX)

Abstract

Aspects of the present disclosure relate to reducing energy consumption of a wireless communication system. For example, a network may implement the scenario that a cell (e.g., a serving cell) may perform techniques to reconfigure UE DRX cycles or modes of all RRC connections without separately sending a dedicated reconfiguration to each UE. The network may align DRX reception at the UE with an associated cell or network entity (e.g., DTX of a serving cell).

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 484,291, filed on Feb. 10, 2023, entitled "ALIGHING USER EQUIPMENT (UE) DISCONTINUOUS RECEPTION (DRX) TO CELL DISCONTINUOUS TRANSMISSION (DTX)", the entire content of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to wireless communication and, more particularly, to aligning user equipment (UE) discontinuous reception (DRX) with cell / network discontinuous transmission (DTX). Background Art

[0004] A wireless communication system may include one or more network communication devices (such as base stations), which may also be referred to as eNodeB (eNB), next-generation NodeB (gNB), or other suitable terms. Each network communication device (such as a base station) may support wireless communication for one or more user communication devices, which may also be referred to as user equipment (UE) or other suitable terms. A wireless communication system may support wireless communication with one or more user communication devices by utilizing resources of the wireless communication system (e.g., time resources (such as symbols, time slots, sub-frames, frames, etc.) or frequency resources (such as sub-carriers, carriers)). In addition, a wireless communication system may support wireless communication across various radio access technologies, including: third-generation (3G) radio access technology, fourth-generation (4G) radio access technology, fifth-generation (5G) radio access technology, and other suitable radio access technologies beyond 5G (e.g., sixth-generation (6G)).

[0005] Although the adoption of 5G and beyond 5G technologies enables a wireless communication system to provide enhanced services at high data rates, these enhanced services typically rely on denser networks (such as networks with an increasing number of cell sites and / or antennas), larger bandwidths, additional frequency bands, etc. Further, as the number of devices and services increases, potential environmental impacts and operating costs attributable to device emissions and energy consumption, as well as other unintended drawbacks, also increase.

[0006] In some cases, the network can achieve energy savings by implementing discontinuous transmission (DTX) or discontinuous reception (DRX) in a cell. During cell DTX / DRX, the behavior of the serving cell during inactive periods or times can include: the gNB turning off all transmissions and receptions for data traffic and reference signals; the gNB only turning off its transmission / reception for data traffic (and still transmitting / receiving reference signals); the gNB turning off its dynamic data transmission / reception (and still performing transmission / reception in periodic resources); and / or the gNB only transmitting reference signals. Summary of the Invention

[0007] The present disclosure relates to methods, apparatuses, and systems for supporting reduction of energy consumption in a wireless communication system by configuring a UE to align its DRX mode with the DTX mode of a network or an associated cell. For example, when a cell decides to save energy (e.g., like a network energy saving (NES) cell) and follows the cell DTX configuration, the cell or the network can perform various actions to reconfigure all RRC-connected UEs to align their DRX configurations with the cell DTX configuration.

[0008] Some implementations of the methods and apparatuses described herein can also include: a UE for wireless communication, including: at least one memory; and at least one processor coupled to the at least one memory, and the at least one processor is configured to cause a network entity: receive a first DRX configuration from a serving cell, apply the first DRX configuration, and receive an indication from the serving cell that the serving cell has switched to DTX.

[0009] In some implementations of the methods and apparatuses described herein, the processor is further configured to cause the UE: receive a second DRX configuration from the serving cell, and in response to the indication, apply the second DRX configuration.

[0010] In some implementations of the methods and apparatuses described herein, the processor is further configured to cause the UE: receive a network energy saving scenario configuration from the serving cell that specifies the DTX configuration for the serving cell.

[0011] In some implementations of the methods and apparatuses described herein, the UE is in a radio resource control (RRC) connected state.

[0012] In some implementations of the methods and apparatuses described herein, the UE receives the first DRX configuration and the second DRX configuration via a single RRC signaling message.

[0013] In some implementations of the methods and apparatuses described herein, the first DRX configuration and the second DRX configuration identify the time periods during which the UE is to be in an active reception mode.

[0014] In some implementations of the methods and apparatuses described herein, a UE receives an indication that a serving cell has transitioned to DTX via physical layer signaling or a Medium Access Control (MAC) Control Element (CE).

[0015] In some implementations of the methods and apparatuses described herein, physical layer signaling triggers the start of one or more time periods during which the serving cell is in an inactive transmission mode.

[0016] In some implementations of the methods and apparatuses described herein, applying a second DRX configuration includes: not following the first DRX configuration when the serving cell is in an inactive transmission mode.

[0017] Some implementations of the methods and apparatuses described herein further include: a method performed by a UE, the method including: receiving a first DRX configuration from a serving cell, applying the first DRX configuration, and receiving an indication that the serving cell has transitioned to DTX from the serving cell.

[0018] In some implementations of the methods and apparatuses described herein, the method further includes: receiving a second DRX configuration from the serving cell, and applying the second DRX configuration in response to the indication.

[0019] In some implementations of the methods and apparatuses described herein, the method further includes: receiving a network energy saving scenario configuration from the serving cell that specifies a DTX configuration for the serving cell.

[0020] In some implementations of the methods and apparatuses described herein, the UE is in an RRC connected state.

[0021] In some implementations of the methods and apparatuses described herein, the UE receives the first DRX configuration and the second DRX configuration via a single RRC signaling message.

[0022] Some implementations of the methods and apparatuses described herein may further include: a processor for wireless communication, the processor including: at least one controller coupled to at least one memory, and the at least one controller is configured to cause the processor: receive a first DRX configuration from a serving cell, apply the first DRX configuration, and receive an indication that the serving cell has transitioned to DTX from the serving cell.

[0023] In some implementations of the methods and apparatuses described herein, the controller is configured to cause the processor: receive a second DRX configuration from the serving cell, and apply the second DRX configuration in response to the indication.

[0024] In some implementations of the methods and apparatuses described herein, the controller is further configured to cause the processor to: receive, from a serving cell, a network energy saving scenario configuration indicating a DTX configuration for the serving cell.

[0025] In some implementations of the methods and apparatuses described herein, the processor is in an RRC connected state.

[0026] In some implementations of the methods and apparatuses described herein, the first DRX configuration and the second DRX configuration are via a single RRC signaling message.

[0027] Some implementations of the methods and apparatuses described herein may further include: a network entity including: at least one memory, and at least one processor coupled to the at least one memory, and the at least one processor is configured to cause the network entity to: determine a DTX configuration, send a network energy saving scenario configuration based on the DTX configuration to one or more UEs, determine a first DRX configuration for the one or more UEs, and send the first DRX configuration to the one or more UEs.

[0028] In some implementations of the methods and apparatuses described herein, the processor is configured to cause the network entity to: based on the DTX configuration, send physical layer signaling to one or more UEs to trigger the start of a time period when the network entity is in an inactive transmission mode.

[0029] In some implementations of the methods and apparatuses described herein, the second DRX configuration is based on the DTX configuration of the network entity.

[0030] In some implementations of the methods and apparatuses described herein, the network entity sends the first DRX configuration and the second DRX configuration via a single RRC signaling message.

[0031] Some implementations of the methods and apparatuses described herein may further include: a method performed by a network entity, the method including: determining a DTX configuration, sending a network energy saving scenario configuration based on the DTX configuration to one or more UEs, determining a first DRX configuration and a second DRX configuration for the one or more UEs, and sending the first DRX configuration and the second DRX configuration to the one or more UEs.

[0032] In some implementations of the methods and apparatuses described herein, the processor is configured to cause the network entity to: determine a second DRX configuration for one or more UEs, and send the second DRX configuration to the one or more UEs.

[0033] In some implementations of the methods and apparatuses described herein, the method further includes: based on the DTX configuration, sending physical layer signaling to one or more UEs to trigger the start of a period when the network entity is in an inactive transmission mode.

[0034] In some implementations of the methods and apparatuses described herein, the second DRX configuration is based on the DTX configuration of the network entity.

[0035] In some implementations of the methods and apparatuses described herein, the network entity sends the first DRX configuration and the second DRX configuration via a single RRC signaling message. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Illustrates an example of a wireless communication system supporting the optimization of UE behavior during a cell DRX mode in accordance with aspects of the present disclosure.

[0037] Figure 2 Illustrates an example of a diagram supporting the alignment of a cell DTX mode and a UE DRX mode in accordance with aspects of the present disclosure.

[0038] Figure 3 Illustrates an example of a diagram supporting the automatic alignment of UE DRX with cell DTX in accordance with aspects of the present disclosure.

[0039] Figure 4 Illustrates an example of a block diagram of a device supporting the alignment of UE DRX with cell / network DTX in accordance with aspects of the present disclosure.

[0040] Figure 5 Illustrates a flowchart of a method supporting the modification of a UE DRX configuration in accordance with aspects of the present disclosure.

[0041] Figure 6 Illustrates a flowchart of a method supporting the provision of a UE DRX configuration in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0042] Although the implementation of the network energy consumption model can significantly enable the network to achieve energy savings, such a model can adversely affect the operation and performance of various devices of the network, such as cells (e.g., base stations) and UEs. For example, when the network adopts DTX for one or more serving cells, when a UE associated with the serving cell remains in an active reception mode (e.g., not in DRX), the UE may waste energy and resources.

[0043] To mitigate these deficiencies, a UE may be configured to align its DRX pattern with the DTX pattern of the network or an associated cell. For example, when a cell decides to conserve energy (e.g., act like an NES cell) and follows the cell DTX configuration, the cell or the network can perform various actions to reconfigure UEs with all RRC connections to align their DRX configurations with the cell DTX configuration.

[0044] By doing so, the network or the cell can inform the UE of the network / cell DTX configuration without the need to send dedicated reconfigurations to each UE individually, thus saving resources and preventing unnecessary messaging, among other benefits.

[0045] Aspects of the present disclosure are described in the context of a wireless communication system. Aspects of the present disclosure are further illustrated and described with reference to device diagrams and flowcharts.

[0046] Figure 1 An example of a wireless communication system 100 that supports UE behavior during a cell DRX mode in accordance with aspects of the present disclosure is illustrated. The wireless communication system 100 may include: one or more network entities 102, one or more UEs 104, a core network 106, and a packet data network 108. The wireless communication system 100 may support multiple radio access technologies. In some implementations, the wireless communication system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communication system 100 may be a 5G network, such as an NR network. In other implementations, the wireless communication system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technologies, including: Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20. The wireless communication system 100 may support radio access technologies beyond 5G. Additionally, the wireless communication system 100 may support technologies such as time division multiple access (TDMA), frequency division multiple access (FDMA), or code division multiple access (CDMA).

[0047] One or more network entities 102 may be dispersed throughout a geographic area to form a wireless communication system 100. The one or more network entities 102 described herein may be or include or may be referred to as network nodes, base stations, network units, radio access networks (RANs), base transceiver stations, access points, NodeBs, eNodeBs (eNBs), next-generation NodeBs (gNBs), or other suitable terms. The network entity 102 and the UE 104 may communicate via a communication link 110, which may be a wireless or wired connection. For example, the network entity 102 and the UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) on the Uu interface.

[0048] The network entity 102 may provide a geographic coverage area 112, for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcasting, etc.) for one or more UEs 104 within the geographic coverage area 112. For example, the network entity 102 and the UE 104 may support wireless communication of signals related to one or more radio access technologies and services (e.g., voice, video, packet data, messages, broadcasting, etc.). In some implementations, the network entity 102 may be mobile, e.g., a satellite associated with a non-terrestrial network. In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, and different geographic coverage areas 112 may be associated with different network entities 102. The information and signals described herein may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0049] One or more UEs 104 may be dispersed throughout the geographic area of the wireless communication system 100. The UE 104 may include or may be referred to as a mobile device, wireless device, remote device, remote unit, handheld device, or subscriber device, or other suitable terms. In some implementations, the UE 104 may be referred to as a unit, station, terminal, or client, among other examples. Additionally or alternatively, the UE 104 may be referred to as an Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine type communication (MTC) device, among other examples. In some implementations, the UE 104 may be stationary in the wireless communication system 100. In some other implementations, the UE 104 may be mobile in the wireless communication system 100.

[0050] One or more UEs 104 may be devices of different forms or with different functions. Figure 1Some examples of the UE 104 are illustrated in the figure. As Figure 1 shown, the UE 104 may be capable of communicating with various types of devices, such as the network entity 102, other UEs 104, or network devices (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network device). Additionally or alternatively, the UE 104 may support communication with other network entities 102 or UEs 104 that may act as relays in the wireless communication system 100.

[0051] The UE 104 may also be able to support wireless communication directly with other UEs 104 over the communication link 114. For example, the UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, the UE 104 may support wireless communication directly with another UE 104 over the PC5 interface.

[0052] The network entity 102 may support communication with the core network 106, or with another network entity 102, or both. For example, the network entity 102 may interface with the core network 106 via one or more backhaul links 116 (e.g., via S1, N2, N2, or other network interfaces). The network entities 102 may communicate with each other over the backhaul links 116 (e.g., via X2, Xn, or another network interface). In some implementations, the network entities 102 may communicate directly with each other (e.g., between network entities 102). In some other implementations, the network entities 102 may communicate with each other either directly or indirectly (e.g., via the core network 106). In some implementations, one or more of the network entities 102 may include sub-components, such as an access network entity that may be an example of an access node controller (ANC). The ANC may communicate with one or more UEs 104 via one or more other access network transport entities, which may be referred to as radio heads, intelligent radio heads, or transmission and reception points (TRPs).

[0053] In some implementations, network entity 102 may be configured in a non-aggregated architecture that may be configured to utilize a protocol stack physically or logically distributed among more than two network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, network entity 102 may include one or more of the following: a central unit (CU), a distributed unit (DU), a radio unit (RU), a RAN intelligent controller (RIC) (e.g., a near-real-time RIC (Near-RT RIC), a non-real-time RIC (Non-RT RIC)), a service management and orchestration (SMO) system, or any combination thereof.

[0054] The RU may also be referred to as a radio head, an intelligent radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmission reception point (TRP). One or more components of network entity 102 in a non-aggregated RAN architecture may be co-located, or one or more components of network entity 102 may be located in distributed locations (e.g., separate physical locations). In some implementations, one or more network entities 102 of a non-aggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU), a virtual DU (VDU), a virtual RU (VRU)).

[0055] The division of functions among the CU, DU, and RU may be flexible and may depend on the functions performed at the CU, DU, or RU (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combination thereof) to support different functions. For example, the division of functions of the protocol stack may be adopted between the CU and the DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack. In some implementations, the CU may carry functions and signaling of higher protocol layers (e.g., layer 3 (L3), layer 2 (L2)) (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP)). The CU may be connected to one or more DUs or RUs, and one or more DUs or RUs may carry lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functions and signaling, and each protocol layer may be at least partially controlled by the CU160.

[0056] Additionally or alternatively, the functional division of the protocol stack can be adopted between the DU and the RU, such that the DU can support one or more layers of the protocol stack and the RU can support one or more different layers of the protocol stack. The DU can support one or more different cells (e.g., via one or more RUs). In some implementations, the functional division between the CU and the DU or between the DU and the RU can be within a protocol layer (e.g., some functions of a protocol layer can be performed by one of the CU, DU, or RU, while other functions of the protocol layer are performed by another of the CU, DU, or RU).

[0057] The CU can be further functionally divided into a CU control plane (CU-CP) and a CU user plane (CU-UP) function. The CU can be connected to one or more DUs via a mid-range communication link (e.g., F1, F1-c, F1-u), and the DU can be connected to one or more RUs via a front-haul communication link (e.g., the open fronthaul (FH) interface). In some implementations, the mid-range communication link or the front-haul communication link can be implemented according to an interface (e.g., a channel) between the layers of the protocol stack supported by the corresponding network entity 102 communicating therewith via such a communication link.

[0058] The core network 106 can support user authentication, access authorization, tracking, connection, and other access, routing, or mobility functions. The core network 106 can be an evolved packet core (EPC), or a 5G core (5GC), which can include control plane entities that manage access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)), and user plane entities that route packets or interconnect with external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). In some implementations, the control plane entities can manage non-access stratum (NAS) functions for one or more UEs 104 served by one or more network entities 102 associated with the core network 106, such as mobility, authentication, and bearer management (e.g., data bearers, signaling bearers, etc.).

[0059] The core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via S1, N2, N2, or other network interfaces). The packet data network 108 may include an application server 118. In some implementations, one or more UEs 104 may communicate with the application server 118. The UE 104 may establish a session (e.g., a protocol data unit (PDU) session, etc.) with the core network 106 via the network entity 102. The core network 106 may use the established session (e.g., the established PDU session) to route traffic (e.g., control information, data, etc.) between the UE 104 and the application server 118. The PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106).

[0060] In the wireless communication system 100, the network entity 102 and the UE 104 may use the resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, time slots, subframes, frames, etc.) or frequency resources (e.g., subcarriers, carriers)) to perform various operations (e.g., wireless communication). In some implementations, the network entity 102 and the UE 104 may support different resource structures. For example, the network entity 102 and the UE 104 may support different frame structures. In some implementations, such as in 4G, the network entity 102 and the UE 104 may support a single frame structure. In some other implementations, such as in 5G and other suitable radio access technologies, the network entity 102 and the UE 104 may support various frame structures (i.e., multi-frame structures). The network entity 102 and the UE 104 may support various frame structures based on one or more parameter sets.

[0061] One or more parameter sets may be supported in the wireless communication system 100, and the parameter set may include subcarrier spacing and cyclic prefix. The first parameter set (e.g., μ = 0) may be associated with the first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first parameter set (e.g., μ = 0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one time slot per subframe. The second parameter set (e.g., μ = 1) may be associated with the second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. The third parameter set (e.g., μ = 2) may be associated with the third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. The fourth parameter set (e.g., μ = 3) may be associated with the fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. The fifth parameter set (e.g., μ = 4) may be associated with the fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix.

[0062] Time intervals of resources (e.g., communication resources) can be organized according to frames (also referred to as radio frames). Each frame can have a duration, e.g., a 10 millisecond (ms) duration. In some implementations, each frame can include multiple subframes. For example, each frame can include 10 subframes, and each subframe can have a duration, e.g., a 1 ms duration. In some implementations, each frame can have the same duration. In some implementations, each subframe of a frame can have the same duration.

[0063] Additionally or alternatively, time intervals of resources (e.g., communication resources) can be organized according to time slots. For example, a subframe can include a certain number (e.g., quantity) of time slots. The number of time slots in each subframe can also depend on one or more parameter sets supported in the wireless communication system 100. For example, a first parameter set, a second parameter set, a third parameter set, a fourth parameter set, and a fifth parameter set associated with respective subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz (i.e., μ = 0, μ = 1, μ = 2, μ = 3, μ = 4) can utilize one time slot per subframe, two time slots per subframe, four time slots per subframe, eight time slots per subframe, and 16 time slots per subframe, respectively. Each time slot can include a certain number (e.g., quantity) of symbols (e.g., OFDM symbols). In some implementations, the number (e.g., quantity) of time slots for a subframe can depend on the parameter set. For a normal cyclic prefix, a time slot can include 14 symbols. For an extended cyclic prefix (e.g., applicable to a 60 kHz subcarrier spacing), a time slot can include 12 symbols. The relationship between the number of symbols per time slot, the number of time slots per subframe, and the number of time slots per frame can depend on the parameter set for both the normal cyclic prefix and the extended cyclic prefix. It should be understood that the reference to the first parameter set (e.g., μ = 0) associated with the first subcarrier spacing (e.g., 15 kHz) can be used interchangeably between subframes and time slots.

[0064] In a wireless communication system 100, the electromagnetic (EM) spectrum can be divided into various categories, frequency bands, frequency channels, etc. based on frequency or wavelength. For example, the wireless communication system 100 can support one or more operating bands, such as frequency range specified FR1 (410 MHz - 7.125 GHz), FR2 (24.25 GHz - 52.6 GHz), FR3 (7.125 GHz - 24.25 GHz), FR4 (52.6 GHz - 114.25 GHz), FR4a or FR4-1 (52.6 GHz - 71 GHz), and FR5 (114.25 GHz - 300 GHz). In some implementations, the network entity 102 and the UE 104 can perform wireless communication on one or more of the operating bands. In some implementations, FR1 can be used by the network entity 102 and the UE 104 and other devices or apparatuses for cellular communication traffic (e.g., control information, data). In some implementations, FR2 can be used by the network entity 102 and the UE 104 and other devices or apparatuses for short-range, high data rate capabilities.

[0065] FR1 can be associated with one or more parameter sets (e.g., at least three parameter sets). For example, FR1 can be associated with a first parameter set including a 15 kHz subcarrier spacing (e.g., μ = 0); and a second parameter set including a 30 kHz subcarrier spacing (e.g., μ = 1); and a third parameter set including a 60 kHz subcarrier spacing (e.g., μ = 2). FR2 can be associated with one or more parameter sets (e.g., at least two parameter sets). For example, FR2 can be associated with a third parameter set including a 60 kHz subcarrier spacing (e.g., μ = 2); and a fourth parameter set including a 120 kHz subcarrier spacing (e.g., μ = 3).

[0066] As described herein, in some embodiments, a network or a cell (e.g., a serving cell) is capable of activating a DTX / DRX configuration. For example, the cell DTX / DRX mode can be activated / deactivated via dynamic L1 / L2 signaling and UE-specific RRC signaling. Both UE-specific signaling and general L1 / L2 signaling can be used to activate / deactivate the cell DTX / DRX mode.

[0067] When the access stratum (AS) receives cell DTX / DRX information from the network, the AS notifies the non-access stratum (NAS) of the network's DTX / DRX time, and the NAS supervises NAS procedures (e.g., registration (update), service request, etc.) based on the DTX / DRX time. Thus, the network applies cell DTX / DRX in the time domain, such as when the UE is in the RRC_CONNECTED state. For example, the gNB can configure periodic cell DTX / DRX, and the gNB can use UE-specific RRC signaling to configure the serving cell.

[0068] Furthermore, the network can configure the cell DTX and cell DRX modes separately (e.g., one RRC configuration set for the downlink (DL) and another RRC configuration set for the UL) or can be configured together. Among other parameters, the following parameters can be part of the cell DTX / DRX configuration: period, start slot / offset, on-duration, etc.

[0069] As described herein, the network can implement techniques in which a cell (e.g., a serving cell) can reconfigure the UE DRX period or mode in which all RRC connections are performed without separately sending dedicated reconfigurations to each UE. Thus, among other benefits, the network can align DRX reception at the UE with DTX of an associated cell or network entity (such as the serving cell).

[0070] Figure 2 FIG. 200 illustrates an example of FIG. 200 that supports alignment of a cell DTX mode with a UE DRX mode in accordance with aspects of the present disclosure. FIG. 200 includes: a first UE (e.g., RRC-connected UE1) having a first DRX configuration 210, and a second UE (e.g., RRC-connected UE2) having a second DRX configuration 215. The DRX configuration identifies the UE reception state, such as a UE reception on state 230 (e.g., when UE1 is actively receiving data traffic and / or reference signals), and a UE reception off state 235 (e.g., when UE1 is inactive for the reception of data traffic and / or reference signals).

[0071] Similarly, a (Network Energy Saving) NES cell has a DTX configuration 220, such as when the cell is in an energy saving mode that utilizes DTX. The DTX configuration 220 for the cell can include: a cell transmission on state 240 (e.g., when the cell is active for the transmission of data services and / or reference signals) and a cell transmission off state 245 (e.g., when the cell is inactive for the transmission of data services and / or reference signals). Thus, cell DTX (or network DTX) can refer to an inactive or non-transmission state, such as a complete stop of sending any DL traffic / signals to the UE. Based on reference point 205, the UE and the cell can align their DRX and DTX configurations.

[0072] In some embodiments, an NES cell or a radio network can broadcast its energy saving scenario (e.g., DTX configuration) to the associated UE. For example, the cell can broadcast different information elements (IEs), such as:

[0073] A. As represented in Table 1 or Table 2, an index that is two (or more) bits long:

[0074] Index value Channels or transmissions affected during cell DTX / DRX inactivity 1 No data traffic and reference signal transmission 2 Transmission with no data traffic only (reference signal is sent) 3 Transmission without dynamic data transmission (periodic data and reference signals are sent) 4 Only the reference signal is sent, and nothing else is sent

[0075] Table 1

[0076]

[0077] Table 2

[0078] B. A one-bit Boolean flag indicating whether the cell is in continuous reception or using the DRX mode. Alternatively, the Boolean flag can indicate whether the cell DRX mode (e.g., DRX configuration) is the same as its DTX mode (e.g., DTX configuration).

[0079] C. The DTX and / or DRX mode contains offset information from a reference point, such as slot / subframe #0 of SFN#0, or the starting point from the next modification period boundary. As defined in TS 38.331, the modification period is used, for example, in the modification period after the period when the SI change indication is sent, to broadcast updated system information (SI) messages (except for SI messages for the Earthquake and Tsunami Warning System (ETWS), Commercial Mobile Alert Service (CMAS), positioning assistance data, and some NTN-specific information specified in the field description). The modification period boundary can be defined by the SFN value where subframe number (SFN) mod m = 0, where m is the number of radio frames that make up the modification period. The modification period can be configured by the system information. If a hyper SFN (H-SFN) is provided in (System Information Block) SIB1 and the UE is configured with (extended DRX) eDRX, the modification period boundary is defined by the SFN value where (H-SFN * 1024 + SFN) mod m = 0.

[0080] In some embodiments, the network can utilize paging configurations, such as a configuration with normal cell transmission times, and a second configuration for the cell DTX time. For example, the cell DTX time configuration can only allow sporadic paging occasions, delay the paging reception of the UE, but save energy for the network. The second configuration (e.g., PCCH-Config2) can specify one or more configuration values of IEs different from the first configuration or the normal cell transmission time, paging configuration (e.g., PCCH-Config1), such as defaultPagingCycle, nAndPagingFrameOffset, ns, firstPDCCH-MonitoringOccasionOfPO, etc. In some cases, parameters not provided for PCCH-Config2 can be obtained from PCCH-Config1.

[0081] Furthermore, a UE in RRC connected state can attempt to receive DL transmissions, such as by monitoring the UE-specific search space using the Cell Radio Network Temporary Identifier (C-RNTI) during the idle mode paging occasion, as if it were in the RRC idle state (calculated according to TS 38.304).

[0082] In some embodiments, when the cell is in DTX, although the cell can receive (e.g., in the active reception mode), the UE does not transmit. The cell cannot transmit (e.g., feedback, dynamic authorization, SSB / RS, etc.), and thus the UE may also not transmit when the cell is in DTX.

[0083] For example, each RRC-connected UE receives (via signaling) a first DRX-Config (e.g., from the MAC entity). Further, the network determines the DTX configuration in advance (e.g., before activating the NES mode). Each UE receives a second DRX-Config for the case when the energy saving function will be activated, and the first DRX-Config and the second DRX-Config are sent to the UE together using dedicated RRC signaling.

[0084] For example, the network sends L1 / L2 signaling common to all RRC-connected UEs on a new common RNTI / search space, indicating that the network is transitioning to (or will transition to) the energy saving mode. When the UE receives the L1 / L2 signaling indicating that the network is transitioning to the energy saving mode, the UE can apply the second DRX-Config and stop using the first configuration.

[0085] In some cases, the L1 / L2 signaling can indicate a future time point at which the second DRX-Config will be activated; an indication can also be implicitly done, such as using the "modification period" technique described herein.

[0086] In some embodiments, the network can send cell DTX configuration to the UE using RRC signaling (e.g., broadcast or dedicated signaling). The UE continues to transmit even when the cell is in DTX (e.g., using configured grant (CG) configuration). When the last retransmission falls within the cell DTX time, a (configurable) fixed number of UL retransmissions can be used. At the last retransmission, the new data indication (NDI) is considered toggled and the hybrid automatic repeat request (HARQ) buffer is flushed. Otherwise, when at least one retransmission will be performed during the network's non-DTX time, when the cell is about to leave DTX (and can thus transmit or respond), the UE stops performing retransmissions.

[0087] In some cases, the network can configure this technique on a per bearer basis. For example, for a certain bearer, when the fixed retransmission feature is not configured, the bearer is considered suspended. For a suspended bearer, the MAC entity also takes its buffer into account when calculating the data volume. In some cases, the MAC entity does not take the buffer of the suspended bearer into account when calculating the data volume, or the UE implementation can define how the UE calculates the data volume for the suspended RB.

[0088] In some embodiments, UE DRX automatically aligns with cell DTX. Figure 3 FIG. 300 illustrates an example supporting automatic alignment of UE DRX with cell DTX in accordance with aspects of the present disclosure.

[0089] For example, the reference point 310 (e.g., DRX offset) for UE1 DRX 210 aligns with the cell transmission off mode 245 of cell DTX 220. Next, the reference point is shifted to a new reference point 320 for the UE (e.g., with time offset 325) to align with the cell transmission on mode 240 of cell DTX 220.

[0090] In some cases, in addition to the shift 325 of the reference point 320, the actual active time of the UE can be derived from the superposition of two configurations (e.g., cell DTX and UE DRX) (e.g., the received time period of the UE and the time period when the cell transmission mode is "on"), as shown in the figure.

[0091] In some embodiments, the network can create or generate groups of UEs with multiple RRC connections, where each group is associated with its own RNTI / search space / CORESET. The L1 / L2 signaling addressed to each group includes: additional DRX configurations applicable to the receiving UEs. The additional DRX configurations for a group of UEs can be updated by: additional DRX configurations published or updated using another L1 / L2 signaling sent later, additional DRX configurations published or updated using an explicit indication in the first L1 / L2 signaling, etc.

[0092] In some cases, the network configures two DRX configurations for each UE in a group of UEs using dedicated RRC signaling. The UE utilizes the first configuration until the network activates the cell DTX configuration, which is signaled and activated to the UE group using L1 / L2 signaling. Once the cell DTX configuration is activated, each UE in the UE group stops using the first DRX configuration and instead applies the second DRX configuration. In some cases, both the first DRX configuration and the second DRX configuration (or one of the DRX configurations) can be specific to each UE.

[0093] In some cases, only the first UE-specific DRX configuration is sent to each UE using dedicated RRC signaling. The first DRX configuration will be used until the network activates the cell DTX configuration. The cell DTX configuration activation signaling addresses the UE group and includes a group-common second DRX configuration. The network can utilize L1 / L2 signaling to the UE group, such as MAC CE. Once the cell DTX configuration is activated, each UE in the UE group stops using the first DRX configuration and instead applies the second DRX configuration.

[0094] In some embodiments, the network can align the "modification period" with the DTX configuration. For example, when the validity / lifetime of the DTX configuration ends with the modification period, the UE confirms whether the DTX configuration can change in the new modification period (e.g., using a direct indication in SIB1). Thus, the network can flexibly control the DTX configuration without additional signaling. The UE checks the SI validity (e.g., by receiving a Value-Tag in each modification period). Further, SIB1 can explicitly indicate whether the DTX configuration from the previous modification period is still valid. When it is no longer valid, the UE can obtain a new DTX configuration, which can be broadcast in SIB1 or another SIB (the list of SIBs broadcast in 5G NR can be found in TS 38.300 or TS 38.331).

[0095] Figure 4FIG. 400 illustrates an example of a block diagram 400 of a device 402 that supports aligning UE DRX with cell / network DTX in accordance with aspects of the present disclosure. The device 402 may be an example of the network entity 102 or the UE 104 described herein. The device 402 may support wireless communication with one or more network entities 102, UEs 104, or any combination thereof. The device 402 may include components for two-way communication, the components for two-way communication including components for sending and receiving communication, such as a processor 404, a memory 406, a transceiver 408, and an I / O controller 410. These components may communicate electronically or otherwise be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., a bus).

[0096] The processor 404, the memory 406, the transceiver 408, or any combination thereof, or their various components may be examples of components for performing various aspects of the present disclosure described herein. For example, the processor 404, the memory 406, the transceiver 408, or their various combinations or components may support methods for performing one or more operations described herein.

[0097] In some implementations, the processor 404, the memory 406, the transceiver 408, or their various combinations or components may be implemented in hardware (e.g., in communication management circuitry). The hardware may include: a processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured to or otherwise supporting components for performing the functions described in the present disclosure. In some implementations, the processor 404 and the memory 406 coupled to the processor 404 may be configured to perform one or more functions described herein (e.g., the processor 404 executing instructions stored in the memory 406).

[0098] For example, the processor 404 may support wireless communication at the device 402 in accordance with examples disclosed herein. The processor 404 may be configured to or otherwise support components for: receiving a first DRX configuration from a serving cell, applying the first DRX configuration, and receiving an indication that the serving cell has transitioned to DTX from the serving cell.

[0099] As another example, the processor 404 may support wireless communication at the device 402 in accordance with the examples disclosed herein. The processor 404 may be configured to or otherwise support components for: determining a DTX configuration, sending a network energy saving scenario configuration based on the DTX configuration to one or more UEs, determining a first DRX configuration for the one or more UEs, and sending the first DRX configuration to the one or more UEs.

[0100] The processor 404 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some implementations, the processor 404 may be configured to operate a memory array using a memory controller. In some other implementations, the memory controller may be integrated into the processor 404. The processor 404 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 406) such that the device 402 performs various functions of the present disclosure.

[0101] The memory 406 may include random access memory (RAM) and read-only memory (ROM). The memory 406 may store, when the computer-readable, computer-executable code is executed by the processor 404, such that the device 402 performs various functions described herein. The code may be stored on a non-transitory computer-readable medium, such as system memory or another type of memory. In some implementations, the code may not be directly executable by the processor 404, but may cause a computer (e.g., upon compilation and execution) to perform the functions described herein. In some implementations, the memory 406 may include a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interactions with peripheral components or devices.

[0102] The I / O controller 410 may manage input and output signals for the device 402. The I / O controller 410 may also manage peripheral devices not integrated into the device M02. In some implementations, the I / O controller 410 may represent a physical connection or port to an external peripheral device. In some implementations, the I / O controller 410 may utilize an operating system, such as or other known operating systems. In some implementations, the I / O controller 410 may be implemented as part of a processor, such as the processor M06. In some implementations, a user may interact with the device 402 via the I / O controller 410 or via hardware components controlled by the I / O controller 410.

[0103] In some implementations, device 402 may include a single antenna 412. However, in some other implementations, device 402 may have more than one antenna 412 (i.e., multiple antennas), including multiple antenna panels or antenna arrays, capable of simultaneously transmitting or receiving multiple wireless transmissions. As described herein, transceiver 408 may communicate bidirectionally via one or more antennas 412, wired, or wireless links. For example, transceiver 408 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 408 may also include a modem to modulate packets, provide the modulated packets to one or more antennas 412 for transmission, and demodulate packets received from one or more antennas 412.

[0104] Figure 5 FIG. is a flow chart illustrating a method 500 for supporting modification of UE DRX configuration in accordance with aspects of the present disclosure. Operations of method 500 may be implemented by a device or components thereof described herein. For example, operations of method 500 may be performed by a UE as described with reference to Figures 1 to 3 In some implementations, a device may execute an instruction set to control functional elements of the device to perform the described functions. Additionally or alternatively, the device may use dedicated hardware to perform aspects of the described functions.

[0105] At 505, the method may include receiving a first DRX configuration from a serving cell. The operation of 505 may be performed in accordance with the examples described herein. In some implementations, aspects of the operation of 505 may be performed by a device as described with reference to Figure 1 In some implementations, aspects of the operation of 505 may be performed by a device as described with reference to

[0106] At 510, the method may include applying the first DRX configuration. The operation of 510 may be performed in accordance with the examples described herein. In some implementations, aspects of the operation of 510 may be performed by a device as described with reference to Figure 1 In some implementations, aspects of the operation of 510 may be performed by a device as described with reference to

[0107] At 515, the method may include receiving an indication from the serving cell that the serving cell has transitioned to DTX. The operation of 515 may be performed in accordance with the examples described herein. In some implementations, aspects of the operation of 515 may be performed by a device as described with reference to Figure 1 In some implementations, aspects of the operation of 515 may be performed by a device as described with reference to

[0108] Figure 6 FIG. is a flow chart illustrating a method 600 for supporting providing UE DRX configuration in accordance with aspects of the present disclosure. Operations of method 600 may be implemented by a device or components thereof described herein. For example, operations of method 600 may be performed by a UE as described with reference to Figures 1 to 3The described network, cell, or network entity performs. In some implementations, the device may execute an instruction set to control the functional elements of the device to perform the described functions. Additionally or alternatively, the device may use dedicated hardware to perform aspects of the described functions.

[0109] At 605, the method may include determining a discontinuous transmission (DTX) configuration. The operation of 605 may be performed according to the examples described herein. In some implementations, aspects of the operation of 605 may be performed by a device as referenced Figure 1 in the description.

[0110] At 610, the method may include sending a network energy saving scenario configuration based on the DTX configuration to one or more UEs. The operation of 610 may be performed according to the examples described herein. In some implementations, aspects of the operation of 610 may be performed by a device as referenced Figure 1 in the description.

[0111] At 615, the method may include determining a first DRX configuration for one or more UEs. The operation of 615 may be performed according to the examples described herein. In some implementations, aspects of the operation of 615 may be performed by a device as referenced Figure 1 in the description.

[0112] At 620, the method may include sending the first DRX configuration to one or more UEs. The operation of 620 may be performed according to the examples described herein. In some implementations, aspects of the operation of 620 may be performed by a device as referenced Figure 1 in the description.

[0113] It should be noted that the methods described herein describe possible implementations, as well as operations and steps that may be rearranged or otherwise modified, and that other implementations are possible. Further, aspects from more than two methods may be combined.

[0114] In conjunction with the present disclosure, the various illustrative blocks and components described may be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, which are designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0115] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software, hardware, firmware, hardwiring, or any combination thereof executed by a processor. The features implementing the functions can also be physically located in various positions, including being distributed such that parts of the functions are implemented at different physical locations.

[0116] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium is any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM, or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store the desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor.

[0117] Any connection can be properly termed a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc where disks typically reproduce data magnetically, while discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0118] As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items that begins with a phrase such as "at least one" or "one or more" or "one or two") indicates an inclusive list, such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Additionally, the phrase "based on" as used herein should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B simultaneously without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on". Additionally, as used herein, including in the claims, a "set" can include one or more elements.

[0119] When referring to a network entity, the terms "send", "receive", or "communicate" can refer to any part of a network entity of a RAN (e.g., a base station, a CU, a DU, a RU) communicating with another device (e.g., directly or via one or more other network entities).

[0120] The description set forth herein in conjunction with the drawings describes example configurations and does not represent all examples that can be implemented or that are within the scope of the claims. The term "example" as used herein means "as an example, instance, or illustration" and not "preferred" or "better than other examples". The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, the techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0121] The description of the present disclosure is provided to enable a person of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to a person of ordinary skill in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein and should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory, and the at least one processor is configured to cause the UE to: receive a first discontinuous reception (DRX) configuration from a serving cell; apply the first DRX configuration; and receive an indication from the serving cell that the serving cell has switched to discontinuous transmission (DTX).

2. The UE according to claim 1, wherein the processor is further configured to cause the UE to: receive a second DRX configuration from the serving cell; and in response to the indication, apply the second DRX configuration.

3. The UE according to claim 2, wherein the UE receives the first DRX configuration and the second DRX configuration via a single radio resource control (RRC) signaling message.

4. The UE according to claim 2, wherein the first DRX configuration and the second DRX configuration identify a time period during which the UE is to be in an active reception mode.

5. The UE according to claim 2, wherein applying the second DRX configuration comprises: When the serving cell is in an inactive transmission mode, the first DRX configuration is not followed.

6. The UE according to claim 1, wherein the memory is further configured to cause the UE to: receive a network energy saving scenario configuration from the serving cell that specifies a DTX configuration for the serving cell.

7. The UE according to claim 1, wherein the UE is in a radio resource control (RRC) connected state.

8. The UE according to claim 1, wherein the UE receives the indication that the serving cell has switched to discontinuous transmission (DTX) via physical layer signaling or a medium access control (MAC) control element (CE).

9. The UE according to claim 9, wherein the physical layer signaling triggers the start of one or more time periods during which the serving cell is in an inactive transmission mode.

10. The UE according to claim 1, wherein the UE receives the indication that the serving cell has switched to discontinuous transmission (DTX) via physical layer signaling or a medium access control (MAC) control element (CE).

11. A processor for wireless communication, comprising: at least one controller coupled to at least one memory, and the at least one controller is configured to cause the processor to: receive a first discontinuous reception (DRX) configuration from a serving cell; apply the first DRX configuration; and receive an indication from the serving cell that the serving cell has switched to discontinuous transmission (DTX).

12. The processor according to claim 11, wherein the controller is further configured to cause the UE to: receive a second DRX configuration from the serving cell; and in response to the indication, apply the second DRX configuration.

13. The processor according to claim 12, wherein the processor receives the first DRX configuration and the second DRX configuration via a single radio resource control (RRC) signaling message.

14. The processor according to claim 12, wherein the controller is further configured to cause the processor to: Receive, from the serving cell, a network energy saving scenario configuration indicating a DTX configuration for the serving cell.

15. A network entity for wireless communication, comprising: At least one memory; And At least one processor coupled to the at least one memory, and the at least one processor is configured to cause the network entity to: Determine a discontinuous transmission (DTX) configuration; Send a network energy saving scenario configuration based on the DTX configuration to one or more user equipments (UEs); Determine a first discontinuous reception (DRX) configuration for the one or more UEs; And Send the first DRX configuration and the second DRX configuration to the one or more UEs.

16. The network entity according to claim 15, wherein the processor is configured to cause the network entity to: Determine a second DRX configuration for the one or more UEs; and Send the second DRX configuration to the one or more UEs.

17. The network entity according to claim 16, wherein the second DRX configuration is based on the DTX configuration of the network entity.

18. The network entity according to claim 15, wherein the processor is configured to cause the network entity to: Based on the DTX configuration, send physical layer signaling to the one or more UEs to trigger the start of a time period when the network entity is in an inactive transmission mode.

19. A method performed by a network entity, the method comprising: Determine a discontinuous transmission (DTX) configuration; Send a network energy saving scenario configuration based on the DTX configuration to one or more user equipments (UEs); Determine a first discontinuous reception (DRX) configuration for the one or more UEs; and Send the first DRX configuration to the one or more UEs.

20. The method according to claim 19, further comprising: Determine a second DRX configuration for the one or more UEs; And Send the second DRX configuration to the one or more UEs.

Images