Transmit-receive point group activation and deactivation using layer 1 or layer 2 signaling

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a network node may select, for a configured cell set comprising a plurality of transmit-receive point (TRP) groups, a TRP group modification associated with a cell group of the configured cell set. The network node may transmit the TRP group modification in at least one of layer 1 signaling or layer 2 signaling. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 379,974, filed on October 18, 2022, entitled “TRANSMIT-RECEIVE POINT GROUP ACTIVATION AND DEACTIVATION USING LAYER 1OR LAYER 2SIGNALING,” and U.S. Non-Provisional Patent Application No. 18 / 451,561, filed on August 17, 2023, entitled “TRANSMIT-RECEIVE POINT GROUP ACTIVATION AND DEACTIVATION USING LAYER 1OR LAYER 2SIGNALING,” which are hereby incorporated by reference into this document. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for transmit-receive point group activation and deactivation using layer 1 or layer 2 signaling. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] Some aspects described herein relate to a method of wireless communication performed by an apparatus of a network node. The method may include: selecting, for a configured cell set including a plurality of transmit-receive point (TRP) groups, a TRP group modification associated with a cell group of the configured cell set. In some aspects, the cell group may be an activated cell group of the configured cell set. The method may include: sending the TRP group modification in at least one of layer 1 (L1) signaling or layer 2 (L2) signaling.

[0008] Some aspects described herein relate to a method of wireless communication performed by a device of a user equipment (UE). The method may include receiving, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured cell set including a plurality of TRP groups. In some aspects, the cell group may be an activated cell group of the configured cell set. The method may include communicating in a wireless network based at least in part on the TRP group modification.

[0009] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include one or more memories and one or more processors, the one or more processors being coupled to the one or more memories. The one or more processors may be configured individually or collectively to: for a configured cell set including multiple TRP groups, select a TRP group modification associated with a cell group of the configured cell set. In some aspects, the cell group may be an activated cell group of the configured cell set. The one or more processors may be configured to: send the TRP group modification in at least one of L1 signaling or L2 signaling.

[0010] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or collectively to receive, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured cell set including multiple TRP groups. In some aspects, the cell group may be an activated cell group of the configured cell set. The one or more processors may be configured to communicate in a wireless network based at least in part on the TRP group modification.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to: for a configured cell set including a plurality of TRP groups, select a TRP group modification associated with a cell group of the configured cell set. In some aspects, the cell group may be an activated cell group of the configured cell set. The instruction set, when executed by one or more processors of the network node, may cause the network node to: send the TRP group modification in at least one of L1 signaling or L2 signaling.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive in at least one of L1 signaling or L2 signaling an indication of a TRP group modification associated with a cell group of a configured cell set including a plurality of TRP groups. In some aspects, the cell group may be an activated cell group of the configured cell set. The instruction set, when executed by one or more processors of the UE, may cause the UE to: communicate in a wireless network based at least in part on the TRP group modification.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for selecting, for a configured cell set including a plurality of TRP groups, a TRP group modification associated with a cell group of the configured cell set. In some aspects, the cell group may be an activated cell group of the configured cell set. The apparatus may include: means for sending the TRP group modification in at least one of L1 signaling or L2 signaling.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for receiving, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured cell set including a plurality of TRP groups. In some aspects, the cell group may be an activated cell group of the configured cell set. The apparatus may include: means for communicating in a wireless network based at least in part on the TRP group modification.

[0015] The various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings, specifications and appendices and as illustrated in the drawings, specifications and appendices.

[0016] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily utilized as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and not as a definition of the limitations of the claims.

[0017] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment, and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0022] Figure 4A and Figure 4B is a diagram illustrating an example of layer 1 and / or layer 2 (L1 / L2) inter-cell mobility according to the present disclosure.

[0023] Figure 5A , Figure 5B and Figure 5Care diagrams illustrating a first example, a second example, and a third example of a medium access control (MAC) control element (CE) according to the present disclosure.

[0024] Figure 6 is a diagram illustrating an example of a wireless communication process between a network node and a UE according to the present disclosure.

[0025] Figure 7 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0026] Figure 8 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0027] Fig. 9 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0028] Fig.10 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0029] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functionality, or structure and functionality other than the various aspects of the disclosure set forth herein or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.

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

[0031] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0032] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0033] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0034] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. The network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).

[0035] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a plurality of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions, but not another base station function. In this way, a single device may include more than one base station.

[0036] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0037] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0038] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless or wired backhaul communication link. In some aspects, the network controller 130 may be, or may include, a CU or a core network device.

[0039] UE 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0040] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., one or more memories) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0041] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0042] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0043] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0044] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). The frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band.

[0045] In view of the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0046] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may select, for a configured cell set including a plurality of TRP groups, a TRP group modification associated with a cell group of the configured cell set; and send the TRP group modification in at least one of layer 1 (L1) signaling or layer 2 (L2) signaling. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0047] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured set of cells including a plurality of TRP groups; and communicate in a wireless network based at least in part on the TRP group modification. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0048] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0049] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0050] At the network node 110, the transmit processor 220 may receive data intended for the UE 120 (or a set of UEs 120) from the data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQI) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a set of corresponding antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0051] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may select a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0052] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0053] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more groups of antenna elements, and / or one or more antenna arrays, etc. An antenna panel, an antenna group, a group of antenna elements, and / or an antenna array may include one or more antenna elements (in a single housing or multiple housings), a group of coplanar antenna elements, a group of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components).

[0054] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform operations described herein (eg, with reference to FIG. 5A to FIG. 10 ) or any aspects of any of the methods described herein.

[0055] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform operations described herein (e.g., with reference to FIG. 5A to FIG. 10 ) or any aspects of any of the methods described herein.

[0056] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with TRP group activation and deactivation using L1 or L2 signaling, as described in more detail elsewhere herein. Figure 2 Any other component of the Figure 7 The process of 700 Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly executed, or executed after compilation, conversion, and / or interpretation), may cause one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 7 The process of 700 Figure 8 The process 800 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0057] In some aspects, a network node (e.g., network node 110) includes: a component for selecting a TRP group modification associated with a cell group of a configured cell set including multiple TRP groups; and / or a component for sending the TRP group modification in at least one of layer 1 signaling or layer 2 signaling. The components for the network node to perform the operations described herein may include, for example, one or more of the following: communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0058] In some aspects, a UE (e.g., UE 120) includes: a component for receiving an indication of a TRP group modification associated with a cell group of a configured set of cells including a plurality of TRP groups in at least one of layer 1 signaling or layer 2 signaling; and / or a component for communicating in a wireless network based at least in part on the TRP group modification. The components for the UE to perform the operations described herein may include, for example, one or more of the following: a communication manager 140, an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a controller / processor 280, or a memory 282.

[0059] Although Figure 2 The blocks in the 200 and 210 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0060] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0061] Figure 3 is a diagram illustrating an example 300 decomposed base station architecture according to the present disclosure.

[0062] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a 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 functions) can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an eNB, an NR BS, a 5G NB, an access node (AP), a TRP, a cell, etc.) can be implemented as an aggregated base station (also called a stand-alone BS or a monolithic BS) or a decomposed base station.

[0063] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between 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 in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, i.e., a virtual centralized unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0064] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an O-RAN (such as a 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)). Decomposition may include distributing functionality across two or more units at various physical locations, as well as virtually distributing functionality of at least one unit, which may enable flexibility in network design. Various units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0065] Figure 3 The disaggregated base station architecture shown may include one or more CUs 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with a core network 320 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 325 via an E2 link, or a non-real-time (non-RT) RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as an F1 interface. The DU 330 may communicate with one or more RUs 340 via respective fronthaul links. The RU 340 may communicate with respective UEs 120 via one or more radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0066] Each of these units (e.g., CU 310, DU 330, RU 340), as well as near-RT RIC 325, non-RTRIC 315, and SMO framework 305 may include one or more interfaces, or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of these units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface that is configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) that is configured to receive or send signals, or both, to one or more of the other units on a wireless transmission medium.

[0067] In some aspects, CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), or service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functions (e.g., central unit-user plane (CU-UP)), control plane functions (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0068] DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RU 340. In some aspects, DU 330 may host one or more of the following: 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 and demodulation, etc.) at least in part according to a functional split (such as a functional split defined by 3GPP). In some aspects, DU 330 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 330 or with control functions hosted by CU 310.

[0069] The lower layer functionality may be implemented by one or more RUs 340. In some deployments, a RU 340 controlled by a DU 330 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, or physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 340 may be implemented to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, real-time and non-real-time aspects of control plane communications and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable the DU 330 and the CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0070] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 390) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some specific implementations, the SMO framework 305 may communicate directly with one or more RUs 340 via the O1 interface. The SMO framework 305 may also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305 .

[0071] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0072] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to adjust RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0073] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0074] FIG. 4A to FIG. 4B are diagrams illustrating examples 400 , 450 of layer 1 and / or layer 2 (L1 / L2) inter-cell mobility according to the present disclosure.

[0075] In a wireless network such as an NR network, a UE and a network node (e.g., a base station or one or more units or components that perform base station functionality) may communicate on an access link using a directional link (e.g., using a high-dimensional phased array) to benefit from beamforming gain and / or maintain acceptable communication quality. In order to achieve acceptable communication quality, the directional link typically uses fine alignment of transmit and receive beams, which may be achieved through a set of operations referred to as beam management and / or beam selection, etc. In addition, the wireless network may support multi-beam operation at relatively high carrier frequencies (e.g., within FR2), which may be associated with harsher propagation conditions than relatively lower carrier frequencies. For example, signals propagating in millimeter wave bands may suffer from increased path loss and severe channel intermittency relative to bands below 6 gigahertz (GHz), and / or may be blocked by objects commonly found in the UE's surrounding environment (e.g., buildings, trees, and / or the user's body, etc.). Therefore, beam management is particularly important for multi-beam operation in relatively high carrier frequencies.

[0076] One possible enhancement of multi-beam operation at higher carrier frequencies is to facilitate efficient (e.g., low latency and low overhead) downlink and / or uplink beam management to support higher L1 / L2-centric inter-cell mobility. Therefore, one goal of L1 / L2-centric inter-cell mobility is to enable the UE to perform cell switching via dynamic control signaling at lower layers (e.g., downlink control information (DCI) for L1 signaling or MAC control element (MAC CE) for L2 signaling) rather than semi-static layer 3 (L3) RRC signaling, so as to reduce latency, reduce overhead and / or otherwise increase the efficiency of cell switching. As an example, the UE may perform an L1 / L2 triggered mobility (LTM) procedure.

[0077] For illustration, Figure 4A An example 400 of a first L1 / L2 inter-cell mobility technique is shown, which may be referred to as inter-cell mobility scheme 1, beam-based inter-cell mobility, dynamic point selection-based inter-cell mobility, and / or non-serving cell-based inter-cell mobility, etc. As described in further detail herein, the first L1 / L2 inter-cell mobility technique may enable a network node to use L1 signaling (e.g., DCI) or L2 signaling (e.g., MAC CE) to indicate that a UE will use a beam from a serving cell or a non-serving cell to communicate on an access link. For example, in a wireless network that does not support L1 / L2 inter-cell mobility (e.g., where cell switching is triggered only by L3 handover), beam selection for control information and for data is typically limited to beams within a physical cell identifier (PCI) associated with a serving cell. In contrast, in a wireless network that supports the first L1 / L2 inter-cell mobility technique (e.g., such as Figure 4A As shown), beam selection for control and data can be extended to include any beam within the serving cell 410 or one or more non-serving neighboring cells 415 configured for L1 / L2 inter-cell mobility.

[0078] exist Figure 4AIn the first L1 / L2 inter-cell mobility technique shown in , the UE may be configured with a single serving cell 410, and the UE may also be configured with a neighboring cell set including one or more non-serving cells 415 configured for L1 / L2 inter-cell mobility. Typically, the serving cell 410 and the non-serving cell 415 configured for L1 / L2 inter-cell mobility may be associated with a common CU and a common DU, or the serving cell 410 and the non-serving cell 415 configured for L1 / L2 inter-cell mobility may be associated with a common CU and different DUs. In some aspects, as shown by reference numeral 420, the base station may use L1 / L2 signaling (e.g., DCI or MAC CE) to trigger L1 / L2 inter-cell mobility (e.g., LTM process) of the UE, and the L1 / L2 signaling indicates a selected transmission configuration indication (TCI) state of a quasi-co-location (QCL) with a reference signal associated with a PCI (e.g., a synchronization signal block (SSB)). For example, in Figure 4A In the example, the UE may use the PCI associated with the serving cell 410 (e.g., Figure 4A 1) to communicate with the serving cell 410, and L1 / L2 signaling may be performed by indicating that the UE will switch to using the PCI associated with the non-serving neighboring cell 415 (e.g., in Figure 4A Therefore, in the first L1 / L2 inter-cell mobility technology, a network node (e.g., a common CU controlling the serving cell 410 and the non-serving neighboring cell 415) can use L1 / L2 signaling to select a beam from the serving cell 410 or the non-serving neighboring cell 415 to serve the UE.

[0079] In this way, relative to limiting L1 / L2 beam selection to beams within the serving cell 410, the first L1 / L2 inter-cell mobility technology can be more robust against blocking and can provide more opportunities for higher-rank spatial division multiplexing across different cells. However, the first L1 / L2 inter-cell mobility technology cannot support changing the primary cell (PCell) or primary secondary cell (PSCell) of the UE. In contrast, in the first L1 / L2 inter-cell mobility technology, RRC signaling is used to perform triggering Pcell or PSCell changes via legacy L3 handover. In this regard, the first L1 / L2 inter-cell mobility technology is associated with the following limitations: when the UE is in the coverage area of ​​the serving cell 410, L1 / L2 signaling can only be used to indicate beams from the serving cell 410 or the configured neighboring cell 415, because L1 / L2 signaling cannot be used to change the Pcell or PSCell. Special cell (SpCell) can be used to refer to the Pcell or PSCell.

[0080] Figure 4B An example 450 of a second L1 / L2 inter-cell mobility technique is illustrated, which may be referred to as inter-cell mobility scheme 2 and / or inter-cell mobility based on a serving cell, etc. Figure 4B As shown, the second L1 / L2 inter-cell mobility technology may use a mechanism generally similar to carrier aggregation to implement L1 / L2 inter-cell mobility, except that different cells configured for L1 / L2 inter-cell mobility may be on the same carrier frequency. Figure 4B As shown, the network node may configure and / or manage a configured cell set 460 for L1 / L2 inter-cell mobility (e.g., using RRC signaling). The configured cell set 460 may include one or more cells, which may be any combination of network nodes, such as one or more RUs and / or one or more TRPs. The configured cell set may alternatively or additionally include and / or be referred to as an LTM candidate cell and / or an LTM candidate cell set.

[0081] In some aspects, a management network node (e.g., a CU, a DU, and / or a base station) may manage the configured cell set 460. For illustration, the management network node may group one or more cells together so that the configured cell set 460 includes multiple groups (e.g., cell groups). That is, the management network node may configure the cells in the cell group to communicate together and / or configure the UE to communicate with the cells as a group. For example, the activated cell set 465 may include one or more cells in the configured cell set 460, which are grouped in a cell group activated by the management network node and prepared for data and / or control transmission. In some aspects, the activated cell set (e.g., the activated cell set 465) may be alternatively or additionally referred to as a service cell group and / or a service cell set that provides wireless services to a UE (e.g., UE 120). In some aspects, a TRP group may be a cell group, wherein each TRP within the group operates using the same carrier frequency and / or is configured within a cell.

[0082] As shown in example 450, the activated cell set 465 may include a first cell group 470-1 and a second cell group 470-2. In some aspects, each activated cell group may be configured with at least one PCell, PSCell and / or SpCell (e.g., by a management network node). In some aspects, one or more secondary cells within a cell group may be configured using the SpCell and / or PCell configuration. Alternatively or additionally, in the second L1 / L2 inter-cell mobility technology, the configured cell set 465 may include one or more deactivated cell groups. "Deactivated cell group" and / or "deactivated cell set" may represent a group of one or more cells and / or TRPs that are configured for L1 / L2 inter-cell mobility (e.g., LTM candidate cell set and / or LTM candidate cell) but are not included in the activated cell set 465 (e.g., within the configured cell set 460). That is, the deactivated cell group may include a non-serving cell. For illustration, the configured cell set 460 shown by the example 450 includes a third cell group 470 - 3 and a fourth cell group 470 - 4 , which are deactivated cell groups (eg, non-serving cell groups) and are not included in the activated cell set 465 .

[0083] For cells configured within a cell group (e.g., a first cell group 470-1, a second cell group 470-2, a third cell group 470-3, and / or a fourth cell group 470-4), activation and / or deactivation may be performed at the group level. For illustration, if the component carrier (CC) of a cell group is deactivated, all cells (e.g., TRPs and / or RUs) within the cell group are deactivated. Similarly, a primary cell (e.g., a primary TRP and / or primary RU) within a cell group may not use L1 / L2 signaling to switch with additional cells within the cell group. That is, a first cell acting as a PCell and / or SpCell within an activated cell group may not use L1 / L2 signaling to explicitly switch out with a second cell within the activated cell group.

[0084] Failure to reconfigure an activated cell group using L1 / L2 signaling, such as by switching PCell and / or SpCell, may introduce delays in the reconfiguration process. That is, using legacy L3 signaling to reconfigure an activated cell group may introduce delays. For illustration, sending a reconfiguration associated with an activated cell group based at least in part on L3 signaling may result in a delay that causes the activated cell group and / or UE to apply an outdated reconfiguration when the UE moves. For example, the reconfiguration may be based at least in part on the UE operating at a first location, and the delay in applying the reconfiguration may cause the UE to move to a second location, which makes the reconfiguration outdated after the relevant modifications are completed. The outdated reconfiguration may reduce signal quality in UE communications, increase recovery errors and / or increase data transmission delays.

[0085] Some techniques and apparatus described herein provide TRP group activation and deactivation using L1 signaling or L2 signaling. A network node may select, for a configured cell set including multiple TRP groups, a TRP group modification associated with a cell group of the configured cell set. As an example, as a TRP group modification, the network node may select to add a first TRP group to an activated cell group by activating the first TRP group and / or to remove a second TRP group from the activated cell group by deactivating the second TRP group. Alternatively or additionally, as a TRP group modification, the network node may select to change one or more SpCells of one or more TRP groups within the activated cell group. The network node may send a TRP group modification and / or an indication of a TRP group modification in at least one of L1 signaling or L2 signaling.

[0086] In some aspects, a UE may receive, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group (e.g., one or more serving cells) that includes a configured cell set of multiple TRP groups (such as a configured cell set that includes an LTM candidate cell set and / or an LTM candidate cell). In some aspects, the cell group may be an activated cell group of the configured cell set. As an example, the UE may receive an indication of the TRP group modification based at least in part on a transmission from the activated cell group. The UE may communicate in a wireless network based at least in part on the TRP group modification.

[0087] The ability to signal an indication of a TRP group modification (e.g., TRP group activation, TRP group deactivation, SpCell change, and / or SpCell configuration change) in L1 signaling and / or L2 signaling reduces latency associated with a UE applying the TRP group modification relative to L3 signaling indicating the TRP group modification. Reducing latency improves responsiveness of the UE when applying the TRP group modification and reduces the probability that the TRP group modification is outdated. That is, the UE may apply current and relevant TRP group modifications instead of outdated TRP group modifications, which improves signal quality associated with UE communications, reduces recovery errors, and / or reduces data transmission delays.

[0088] As indicated above, FIG. 4A to FIG. 4B are provided as examples. Other examples can be found in the FIG. 4A to FIG. 4B Different from what is described.

[0089] Figure 5A , Figure 5B and Figure 5C500, a second example 502, and a third example 504 of a MAC CE according to the present disclosure are diagrams. Although the first example 500, the second example 502, and the third example 504 describe one or more fields included in the MAC CE, aspects of these examples may be included in the DCI. For example, one or more fields described with respect to the first example 500, the second example 502, and the third example 504 may be included in the DCI. Therefore, aspects of the first example 500, the second example 502, and / or the third example 504 may be indicated using L1 signaling (e.g., DCI) and / or L2 signaling (e.g., MAC CE).

[0090] The first example 500 shows an example structure of a TRP group activation MAC CE 506 that a network node may signal based at least in part on a modification and / or change in configuration of a TRP group associated with a set of cells configured as described herein. The size of each field included in the TRP group activation MAC CE 506 is Figure 5A , but in other examples, each field may span more or fewer bits. In some aspects, the TRP group activation MAC CE 506 may be associated with a specific logical channel identifier (LCID) dedicated to the activation state of the cell group and / or TRP group.

[0091] The TRP group activation MAC CE 506 may include an activation status field 508 that may span a first octet of bits. In some aspects, the activation status field 508 may be based at least in part on a bit field and / or a bitmap, and each bit of the bit field may indicate information that is independent of information indicated by other bits included in the bit field. As an example, a first bit of the activation status field 508 may be designated as a reserved bit 510 (shown as R 510), and one or more remaining bits of the activation status field 508 may indicate an activation state (e.g., an enabled activation state or a disabled activation state) of a particular TRP group within a configured set of cells. For illustration, the first TRP group activation state bit 512-1 may indicate a first activation state associated with a first TRP group within the configured set of cells, the second TRP group activation state bit 512-2 may indicate a second activation state associated with a second TRP group within the configured set of cells, and the nth TRP group activation state bit 512-n may indicate an nth activation state associated with an nth TRP group within the configured set of cells, where n is an integer (e.g., n=7 in the first example 500). For example, a first bit value (e.g., "0") may indicate a disabled activation state of the associated TRP group, and a second bit value (e.g., "1") may indicate an enabled activation state of the associated TRP group. In some aspects, a network node (e.g., network node 110) may indicate a mapping of each TRP group activation state bit to a particular TRP group prior to sending the TRP group activation MAC CE 506. For example, the network node may send an RRC message to a UE (e.g., UE 120) indicating a mapping of a particular activation status bit within a bit field to a particular TRP group and / or a TRP group identifier (ID). In some aspects, the network node may indicate the TRP group ID of an activated TRP group (e.g., a serving TRP group) in the activation status field 508. That is, the network node may indicate the value of the TRP group ID.

[0092] The TRP group activation MAC CE 506 may include one or more measurement configuration ID fields in the measurement configuration ID field 514 (shown as measurement configuration ID 514). The measurement configuration field may indicate an L1 measurement configuration and / or an L1 measurement report configuration for L1 measurements associated with the deactivated TRP group, such as, by way of example and not limitation, a target frequency and / or a target reference signal. For example, a particular measurement configuration field may be associated with a particular TRP group that the activation status field 508 indicates has an activation status of deactivated. For purposes of illustration, and as shown in FIG. Figure 5AAs shown in , the TRP group activation MAC CE 506 may include a first measurement configuration ID field 514-1, a second measurement configuration ID field 514-2, and up to the mth measurement configuration ID field 514-m, where m is an integer. Each measurement configuration field may be associated with a corresponding deactivated TRP group (e.g., a non-serving TRP group) and indicate an L1 measurement configuration for performing L1 measurements based at least in part on one or more signals from the deactivated TRP group (such as an SSB associated with the deactivated TRP group). As an example, before sending the TRP group activation MAC CE 506, the network node (e.g., the network node 110) may indicate multiple measurement configurations and / or multiple measurement report configurations to the UE (e.g., UE 120) in an RRC message. In some aspects, the network node may assign a corresponding measurement configuration ID to each measurement configuration and / or measurement report configuration in the RRC message and indicate a specific measurement configuration ID in the measurement configuration field.

[0093] In some aspects, the TRP group activation MAC CE 506 may optionally include or exclude one or more measurement configuration ID fields in the measurement configuration ID field 514. For example, the activation state field 508 may indicate that all TRP groups are in an enabled activation state. Therefore, the TRP group activation MAC CE may exclude the measurement configuration field. In some aspects, the reserved bit 510 may be set to a measurement inclusion state value that specifies that the TRP group activation MAC CE 506 lacks a measurement configuration field. For example, a first measurement inclusion state value (e.g., "0") may indicate that the TRP group activation MAC CE 506 does not include any measurement configuration field, and a second measurement inclusion state value (e.g., "1") may indicate that the TRP group activation MAC CE 506 includes at least one measurement configuration field. The UE receiving the TRP group activation MAC CE 506 may alternatively or additionally derive the number of measurement configuration fields included in the TRP group activation MAC CE 506 based at least in part on the number of bits indicating a disabled activation state in the activation state field 508. The TRP group activation MAC CE 506 may indicate each measurement configuration field based at least in part on an order of one or more TRP group identifiers (e.g., in numerically increasing order or numerically decreasing order) and / or an order of bits associated with the activation state field 508. For example, a first TRP group associated with the lowest least significant bit in the activation state field 508 indicating an activation state of deactivation may be associated with the first listed measurement configuration field. A second TRP group associated with the next lowest least significant bit in the activation state field 508 indicating an activation state of deactivation may be associated with the second listed measurement configuration field. Other examples may include an order based at least in part on the most significant bit.

[0094] Figure 5BThe second example 502 shows an example structure of a master TRP group configuration MAC CE 516 that a network node (e.g., network node 110) may signal based at least in part on selecting a modification and / or change to a master TRP group associated with a configured set of cells as described herein. For illustration, the network node may signal the master TRP group configuration MAC CE 516 based at least in part on selecting to change the master TRP group of an activated cell group from a first TRP group to a second TRP group. In some aspects, the structure associated with the master TRP group configuration MAC CE 516 may be based at least in part on eight bits of bits as shown in example 502. However, in other examples, the structure of the master TRP group configuration MAC CE may be based at least in part on more or fewer bits than eight bits. In some aspects, the network node may use a separate message to signal Figure 5A The TRP group activates MAC CE 506 and Figure 5B The master TRP group is configured with MAC CE 516.

[0095] The master TRP group configuration MAC CE 516 may include a master TRP group ID field 518 (shown as master group ID 518) indicating activation of a particular TRP group as a master TRP group. Although the second example 502 shows the master TRP group ID field 518 as a portion of the first octet spanning the master TRP group configuration MAC CE 516, the master TRP group ID field 518 may span the entire octet or span more than one octet. In some aspects, the network node may indicate in the master TRP group ID field 518 a value specifying a particular TRP group as a master TRP group. For example, the network node may indicate a value and / or an enumerator associated with a particular TRP group ID. As another example, the master TRP group ID field 518 may be configured as a bit field and / or map each bit of the field to a bitmap of a corresponding TRP group (e.g., by means of an RRC message). The network node may indicate a first value (e.g., "1") specifying the use of a particular TRP group as a master TRP group for a particular bit within a field associated with a particular TRP group. Alternatively or additionally, the network node may indicate a second value (e.g., "0") for other bits within this field that specify not to use other TRP groups as the primary TRP group. In some aspects, selecting a particular TRP group as the primary TRP group may indicate an enabled activation state of the particular TRP group.

[0096] In some aspects, the main TRP group ID field 518 may include an explicit instruction to deactivate a particular TRP group as the main TRP group. For example, the network node may set a bit value associated with the particular TRP group to a value (e.g., a second value) that specifies that the particular TRP group is not used and / or deactivated as the main TRP group. In other aspects, the main TRP group ID field 518 may include an implicit instruction to deactivate a particular TRP group as the main TRP group. For example, the network node may indicate a TRP group ID of another TRP group in the main TRP group ID field 518, and implicitly indicate deactivating the particular TRP group as the main group based at least in part on not indicating the particular TRP group ID.

[0097] The master TRP group configuration MAC CE 516 may include a SpCell ID field 520 (shown as SpCell ID 520) spanning a second portion of the first octet. However, the SpCell ID field 520 may span the entire octet or span more than one octet. In some aspects, the network node may indicate in the SpCell ID field 520 a pointer to a TRP group ID associated with a particular TRP group to activate the SpCell as the master TRP group. Alternatively or additionally, the network node may indicate in the SpCell ID field 520 an index of the TRP group to be activated as the SpCell. For example, a configured cell may include multiple TRP groups, each TRP group being assigned a corresponding index within the configured cell, and the network node may indicate a specific index in the SpCell ID field 520.

[0098] The master TRP group configuration MAC CE 516 may include a SpCell configuration ID field 522 (shown as SpCell configuration ID 522), which may alternatively be referred to as an LTM candidate configuration ID field. Although example 502 shows that the SpCell configuration ID field 522 spans the second octet of the master TRP group configuration MAC CE 516, other examples may span more or fewer bits. In some aspects, a network node (e.g., network node 110) may indicate (e.g., using RRC signaling and before sending the master TRP group configuration MAC CE 516) multiple SpCell configurations and / or SpCell configuration IDs to a UE (e.g., UE 120). The SpCell configuration may indicate various information associated with a SpCell (e.g., a SpCell specified by the SpCell ID field 520), such as an initial bandwidth portion (BWP), an activated downlink BWP, an activated uplink BWP, a deactivation time value, and / or cross-carrier scheduling. Alternatively or additionally, the UE may indicate one or more supported SpCell configurations to the network node, such as in capability information and / or in an RRC response to a plurality of SpCell configurations indicated by the network node. For example, the UE may indicate a subset of a plurality of SpCell configurations indicated by the network node as one or more supported SpCell configurations. Each SpCell configuration may be assigned a SpCell configuration ID and / or index (e.g., by the network node in an RRC message or by the UE). In some aspects, the network node may indicate in the SpCell Configuration ID field 522 a specific SpCell configuration ID selected from the SpCell configurations supported by the UE and / or from the plurality of SpCell configurations indicated by the network node.

[0099] The SpCell configuration ID field 522 may be configured as a bitmap, wherein each bit of the SpCell configuration ID field 522 is mapped to a specific SpCell configuration (e.g., a mapping based at least in part on an RRC message indication). To indicate a specific SpCell configuration, the network node may set a bit of the SpCell configuration ID field 522 (e.g., a bit mapped to a specific SpCell configuration) to a first value (e.g., “1”) that specifies communication with the SpCell based at least in part on the specific SpCell configuration. Alternatively or additionally, the network node may indicate a second value (e.g., “0”) for other bits within the field that specifies not to use other SpCell configurations to communicate with the SpCell.

[0100] The master TRP group configuration MAC CE 516 may include a reference signal ID field 524 (shown as reference signal ID 524). Although shown in example 502 as spanning the third octet of the master TRP group configuration MAC CE 516, other examples of the reference signal ID field 524 may span more or fewer bits. In some aspects, the reference signal ID field 524 may indicate a reference signal ID mapped to reference signal configuration information. For illustration, the reference signal configuration information may indicate one or more configuration parameters associated with a channel state information reference signal (CSI-RS) for tracking (TRS). A network node (e.g., network node 110) may signal a pointer to a specific reference signal configuration (e.g., CSI-RS configuration and / or TRS configuration) in the reference signal ID field 524. In some aspects, the reference signal configuration may indicate a TCI state associated with a SpCell TRP group, such as a TCI state associated with performing beam management for the SpCell TRP group.

[0101] The network node may conditionally signal the reference signal ID field 524 as part of the master TRP group configuration MAC CE 516. For illustration, the network node may (conditionally) refrain from indicating the reference signal ID field 524 based at least in part on an associated SpCell TRP group having an activation state of enabled. That is, the associated SpCell TRP group (e.g., indicated by the SpCell ID field 520) may already have an association with a reference signal, a reference signal ID, and / or reference signal configuration information based at least in part on being currently in an activation state of enabled at the time of transmission of the master TRP group configuration MAC CE 516. As another example, the network node may (conditionally) indicate the reference signal ID field 524 based at least in part on an associated SpCell TRP group having an activation state of disabled. That is, the master TRP group configuration MAC CE 516 may indicate a transition of the associated SpCell TRP group from a deactivated activation state to an enabled activation state, and the network node may (conditionally) include the reference signal ID field 524 in the master TRP group configuration MAC CE 516 .

[0102] Figure 5C The third example 504 of FIG. 504 shows an example structure of a joint TRP group activation and master TRP group configuration MAC CE 526 (joint MAC CE 526) that a network node (e.g., network node 110) may signal based at least in part on selecting a modification and / or change to a TRP group configuration and / or master TRP group associated with a configured set of cells, as further described. As shown in the third example 504, the joint MAC CE 526 may include information such as regarding Figure 5A The TRP group activates the MAC CE 506 and / or as described in Figure 5B The described master TRP group configures aspects of the MAC CE 516. The network node may use a single message to signal the joint MAC CE 526. In some aspects, the joint MAC CE 526 may be associated with a specific logical channel identifier (LCID) dedicated to the activation state of the cell group and / or TRP group.

[0103] As shown in the third example 504, the joint MAC CE 526 may include the following: Figure 5A The activation status field 508 described. The activation status field 508 may be based at least in part on a bit field and / or a bitmap that maps bits to corresponding TRP groups, as further described. The activation status field 508 of the joint MAC CE 526 may include a reserved bit 510 and multiple activation status bits (shown as a first activation status bit 512-1, a second activation status bit 512-2, and up to the nth activation status bit 512-n). The number of bits associated with the activation status field 508 (e.g., whether included in the joint MAC CE 526 or in the TRP group activation MAC CE 506) may be based at least in part on the number of TRP groups that can be activated simultaneously. For example, the number of activated TRP groups may be based at least in part on a first maximum number of (allowable) activated TRP groups specified by a communication standard, a second maximum number of available TRP groups within an activated cell set (e.g., a serving cell set), and / or a third maximum number of activated TRP groups supported by the UE. Thus, the number of bits included in the activation status field 508 of the joint MAC CE 526 may be based at least in part on the maximum number of activated TRP groups allowed, available, and / or supported. Alternatively or additionally, the number of bits included in the activation status field 508 of the joint MAC CE 526 may be based at least in part on the inclusion of reserved bits.

[0104] The joint MAC CE 526 may include one or more reference signal ID fields 524 (such as Figure 5B described), in Figure 5C524-1 through the pth reference signal ID field 524-p, where p is an integer. In some aspects, as part of the joint MAC CE 526, the network node may indicate a corresponding reference signal ID field (e.g., indicating a reference signal configuration) for each deactivated TRP group indicated in the activation status field 508. Alternatively or additionally, the network node may indicate a corresponding reference signal ID field for each activated TRP group in the plurality of TRP groups. The network node may indicate a reference signal configuration (e.g., a CSI-RS configuration and / or a TRS configuration) in each reference signal ID field. Although example 526 shows each reference signal identifier field as an eight-bit field (e.g., an eight-bit group), other examples may use more or fewer bits.

[0105] As shown in example 504, the joint MAC CE 526 may include a primary TRP group identifier field 518, a SpCell ID field 520, and a SpCell configuration ID field 522, as described with respect to Figure 5B As described. The field positions of the fields and / or the sizes of the primary TRP group ID field 518, the SpCell ID field 520, and the SpCell configuration ID field 522 may be different from those shown in example 504. As an example, the primary TRP group identifier field 518, the SpCell ID field 520, and the SpCell configuration ID field 522 may be based at least in part on a single octet of bits using the joint MAC CE 526 (or other MAC CE). As another example, the primary TRP group ID field 518, the SpCell ID field 520, and the SpCell configuration ID field 522 may be based at least in part on multiple octets of bits using the joint MAC CE 526, such as a first octet of bits for the primary TRP group ID field 518, a second octet of bits for the SpCell ID field 520, and a third octet of bits for the SpCell configuration ID field 522. Reserved bits, such as reserved bit 510, may also be located in one or more positions within the joint MAC CE 526 that are different from the positions shown in the first example 500, the second example 502, and / or the third example 504, such as within a first octet of bits, a second octet of bits, and / or a third octet of bits.

[0106] The joint MAC CE 526 may include information such as Figure 5AOne or more of the described measurement configuration ID fields 514 are illustrated by the third example 504 as a first measurement configuration ID field 514-1 through an mth measurement configuration ID field 514-m, where m is an integer. As an example, a network node (e.g., network node 110) may indicate multiple measurement configuration fields based at least in part on indicating multiple deactivated TRP groups in a joint MAC CE 526 (e.g., multiple bits indicating deactivated activation states of associated TRP groups). For illustration, the network node may indicate a corresponding measurement configuration field for each deactivated TRP group by signaling the joint MAC CE 526.

[0107] In some aspects, as part of the joint MAC CE 526, the network node may signal multiple measurement configuration ID fields based at least in part on the order in which the TRP group ID is associated. For example, the network node may signal multiple measurement configuration ID fields based at least in part on the ascending and / or descending numerical order of the associated TRP group ID. That is, the first measurement configuration field associated with the first deactivated TRP group with the lowest TRP group ID value may be signaled first, and the second measurement configuration field associated with the second deactivated TRP group with the highest TRP group ID value may be signaled last (or vice versa). In some aspects, one or more measurement configuration ID fields in the measurement configuration ID field may indicate and / or specify an association between at least two TRPs included in the corresponding deactivated TRP group. For example, the measurement configuration ID field may point to a measurement configuration and / or measurement report configuration that specifies the association.

[0108] The size of the joint MAC CE 526 and / or the number of fields included in the joint MAC CE 526 may be based at least in part on the TRP group modification. For illustration, the TRP group modification selected by the network node may include one or more TRP group activation and / or deactivation modifications, but exclude the main TRP group modification. Therefore, the network node may conditionally exclude one or more fields associated with the main TRP group modification within the joint MAC CE 526 (e.g., the main TRP group identifier field 518, the SpCell ID field 520, and / or the SpCell configuration ID field 522). Alternatively or additionally, the network node may instruct the joint MAC CE 526 to exclude one or more fields associated with the main TRP group modification, such as by setting a reserved bit to a first value or a second value. In other examples, the network node may conditionally include one or more fields within the joint MAC CE 526 based at least in part on selecting the main TRP group modification as the TRP group modification.

[0109] The first example 500, the second example 502, and the third example 504 describe one or more fields that can be included in a MAC CE or DCI to enable a network node to indicate TRP group activation and / or deactivation information and / or main group configuration information to a UE using L1 signaling and / or L2 signaling. The ability to signal indications of TRP group modifications (e.g., TRP group activation, TRP group deactivation, SpCell changes, and / or SpCell configuration changes) in L1 signaling and / or L2 signaling reduces delays in the UE that apply the TRP group modifications relative to L3 signaling indicating the TRP group modifications. Reducing delays improves the responsiveness of the UE when applying TRP group modifications and reduces the probability that the TRP group modifications applied by the UE are outdated. That is, the UE applying current (and relevant) TRP group modifications instead of outdated TRP group modifications can improve signal quality associated with UE communications, reduce recovery errors, and / or reduce data transmission delays.

[0110] As indicated above, Figure 5A , Figure 5B and Figure 5C Other examples can be found in the Figure 5A , Figure 5B and Figure 5C Different from what is described.

[0111] Figure 6 600 is a diagram illustrating an example of a wireless communication process between a network node (e.g., network node 110) and a UE (e.g., UE 120) according to the present disclosure. For visual clarity, example 600 shows network node 110 as a single network node, but may include at least partially based on, for example, Figure 3 The decomposed architecture described and / or Figure 4B A plurality of network nodes of a cell group are further described.

[0112] UE 120 may send capability information and network node 110 may receive the capability information, as indicated by reference numeral 610. As one example, as part of the capability information, UE 120 may send an indication of the number of activated cell groups (e.g., the number of serving cells) within the configured set of cells supported by the UE.

[0113] As indicated by reference numeral 620, the network node 110 may send one or more RRC messages, and the UE 120 may receive one or more RRC messages. In some aspects, the network node may send an RRC message indicating a plurality of TRP groups within a configured set of cells and / or a corresponding TRP group ID for each TRP group. Alternatively or additionally, the network node may send one or more measurement configurations, one or more measurement report configurations, one or more reference signal configurations, and / or one or more SpCell configurations in an RRC message. When sending any combination of measurement configurations, measurement report configurations, reference signal configurations, and / or SpCell configurations, the network node 110 may indicate a corresponding configuration ID (e.g., a measurement configuration ID, a measurement report configuration ID, a reference signal configuration ID, and / or a SpCell configuration ID) that may be used by the UE 120 to identify the corresponding configuration. In some aspects, the network node 110 may send initial configuration information associated with the configured set of cells in an RRC message.

[0114] As indicated by reference numeral 630, the network node 110 and the UE 120 may communicate with each other based at least in part on the configured cell set. For illustration, the network node 110 may send downlink communications based at least in part on an activated cell set in the configured cell set, and the UE 120 may receive downlink communications based at least in part on an activated cell set in the configured cell set. Alternatively or additionally, the UE 120 may send uplink communications based at least in part on an activated cell set in the configured cell set, and the network node 110 may receive uplink communications based at least in part on an activated cell set in the configured cell set.

[0115] As shown by reference numeral 640, the network node 110 may select a TRP group modification. As an example, the network node 110 may receive a signal metric (e.g., channel state information (CSI), RSSI, RSRQ, and / or CQI) indicating that the current channel quality fails to meet a quality threshold and / or has poor quality. As another example, the network node 110 may identify that the location change of the UE meets a distance threshold associated with the changed channel quality. The network node 110 may select a TRP group modification that mitigates the poor and / or changed channel quality. As an example, the network node 110 may select a corresponding activation state for one or more TRP groups in a plurality of TRP groups included in a configured cell set as at least part of the TRP group modification. For example, the network node 110 may select to include or exclude one or more TRP groups in the activated cell group of the configured cell set. Alternatively or additionally, as at least part of the TRP group modification, the network node 110 may select to change the main TRP group of the activated cell group from the first TRP group to the second TRP group. In some aspects, the network node 110 may select the SpCell TRP group modification as part of the TRP group modification. For illustration, the network node may select a modification of the SpCell TRP group within the current primary TRP group of the activated cell group, such as changing the SpCell TRP group from the first TRP group in the plurality of TRP groups to the second TRP group.

[0116] As indicated by reference numeral 650, the network node 110 may send an indication of a TRP group modification, and the UE 120 may receive the indication of the TRP group modification. As further described herein, the network node 110 may send the TRP group modification using L1 signaling (e.g., DCI) or L2 signaling (e.g., MAC CE). For illustration, the network node 110 may send a TRP group activation MAC CE (e.g., TRP group activation MAC CE 506) to the UE based at least in part on a first communication to the UE 120 and / or send a master TRP group configuration MAC CE (e.g., master TRP group configuration MAC CE 516) to the UE 120 based at least in part on a second communication to the UE 120. As another example, the network node 110 may send a joint TRP group activation and a master TRP group configuration MAC CE (e.g., joint MAC CE 526) to the UE 120 in a single communication.

[0117] As indicated by reference numeral 660, the network node 110 and the UE 120 may communicate with each other based at least in part on the TRP group modification. For illustration, the network node 110 may send downlink communications based at least in part on an activated set of cells in the configured set of cells, and the UE 120 may receive downlink communications based on an activated set of cells in the configured set of cells, the configured set of cells being configured at least in part based on the TRP group modification. Alternatively or additionally, the UE 120 may send uplink communications based at least in part on the activated set of cells, and the network node 110 may receive uplink communications based at least in part on the activated set of cells, the activated set of cells being configured at least in part based on the TRP group modification.

[0118] As shown by reference numeral 670, the network node 110 may iteratively select an updated TRP group modification, indicate the updated TRP group modification to the UE 120, and / or communicate with the UE 120 based at least in part on the updated TRP group modification. As an example, the network node 110 may receive an updated signal metric (e.g., CSI, RSSI, RSRQ, and / or CQI) indicating that the current channel quality fails to meet a quality threshold and / or has poor quality. The network node 110 may select an updated TRP group modification to mitigate the poor quality. As another example, the network node 110 may identify that the updated location change of the UE meets a distance threshold associated with the changed channel quality, and select an updated TRP group modification to mitigate the changed channel quality.

[0119] The ability to signal an indication of a TRP group modification in L1 signaling and / or L2 signaling reduces latency in a UE associated with applying the TRP group modification relative to L3 signaling indicating the TRP group modification. Reducing latency improves responsiveness of the UE in applying the TRP group modification and reduces the probability that a TRP group modification applied by the UE is out of date. Applying current (and relevant) TRP group modifications instead of outdated TRP group modifications may improve signal quality associated with UE communications, reduce recovery errors, and / or reduce data transmission delays.

[0120] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0121] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a network node in accordance with the present disclosure. The example process 700 is an example in which a network node (eg, network node 110) performs operations associated with TRP group activation and deactivation using L1 or L2 signaling.

[0122] like Figure 7As shown in FIG. 7 , in some aspects, process 700 may include selecting, for a configured cell set including a plurality of TRP groups, a TRP group modification associated with a cell group of the configured cell set (block 710). For example, a network node (e.g., using Fig. 9 The communication manager 150 and / or configured cell set manager component 908 depicted in the figure may select a TRP group modification associated with a cell group of the configured cell set for a configured cell set including multiple TRP groups, as described above. In some aspects, the cell group may be an activated cell group of the configured cell set.

[0123] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include sending a TRP group modification in at least one of L1 signaling or L2 signaling (block 720). For example, a network node (e.g., using Fig. 9 The communication manager 150 and / or sending component 904 depicted in FIG. 1 may send the TRP group modification in at least one of L1 signaling or L2 signaling, as described above.

[0124] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0125] In a first aspect, the L1 signaling or L2 signaling includes at least one of the following: a TRP group activation MAC CE, a master TRP group configuration MAC CE, a joint TRP group activation and master TRP group configuration MAC CE, or a DCI.

[0126] In a second aspect, selecting a TRP group to modify includes selecting a corresponding activation state of each TRP group in the plurality of TRP groups.

[0127] In a third aspect, selecting the corresponding activation state includes: selecting a corresponding TRP group among the multiple TRP groups in the activated cell group that includes or excludes the activated cell group.

[0128] In a fourth aspect, the L1 signaling or the L2 signaling indicates an activation status field, and the activation status field indicates the corresponding activation status of each TRP group in the plurality of TRP groups.

[0129] In a fifth aspect, the activation status field comprises a bit field, each bit of the bit field being associated with a corresponding TRP group among the plurality of TRP groups, and process 700 comprises setting each bit of the activation status field to a corresponding value indicating the corresponding activation state associated with the corresponding TRP group.

[0130] In a sixth aspect, the first bit state indicates an enabled activation state, and the second bit state indicates a disabled activation state.

[0131] In a seventh aspect, each bit is associated with a corresponding TRP group identifier.

[0132] In an eighth aspect, the L1 signaling or the L2 signaling indicates a TRP group identifier associated with an activated TRP group among the plurality of TRP groups.

[0133] In a ninth aspect, the TRP group modification includes deactivating a first TRP group among the multiple TRP groups, and the L1 signaling or the L2 signaling indicates a measurement configuration field, which specifies at least one of: an L1 measurement configuration associated with an L1 measurement based at least in part on the first TRP group; or an L1 measurement reporting configuration associated with reporting the L1 measurement.

[0134] In a tenth aspect, the L1 signaling or the L2 signaling indicates a measurement inclusion status value for a reserved bit, and the measurement inclusion status value specifies that the L1 signaling or the L2 signaling includes the measurement configuration field.

[0135] In an eleventh aspect, the L1 signaling or the L2 signaling indicates a plurality of measurement configuration fields, and each measurement configuration field of the plurality of measurement configuration fields is associated with a corresponding deactivated TRP group of the plurality of TRP groups.

[0136] In a twelfth aspect, the L1 signaling or the L2 signaling indicates the plurality of measurement configuration fields using an order based at least in part on a corresponding TRP group identifier of each deactivated TRP group in the plurality of TRP groups.

[0137] In a thirteenth aspect, the order is based at least in part on increasing numerical values.

[0138] In a fourteenth aspect, each measurement configuration field indicates a corresponding L1 configuration specifying an association between at least two TRPs included in the corresponding deactivated TRP group.

[0139] In a fifteenth aspect, the L1 signaling or the L2 signaling indicates a corresponding reference signal identifier field for each deactivated TRP group in the plurality of TRP groups.

[0140] In a sixteenth aspect, the L1 signaling or the L2 signaling indicates a corresponding reference signal configuration for each activated TRP group among the plurality of TRP groups.

[0141] In a seventeenth aspect, the corresponding reference signal identifier field comprises an eight-bit field.

[0142] In an eighteenth aspect, the L1 signaling or L2 signaling indicates the number of activated TRP groups among the multiple TRP groups, and the number of activated TRP groups is based at least in part on at least one of: a first maximum number of activated cell groups specified by the communication standard; a second maximum number of available TRP groups; or a third maximum number of activated TRP groups supported by the UE.

[0143] In the nineteenth aspect, selecting the TRP group modification includes: selecting to change the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

[0144] In the twentieth aspect, the L1 signaling or the L2 signaling indicates activation of the second TRP group as the primary TRP group.

[0145] In a twenty-first aspect, the L1 signaling or the L2 signaling indicates: an explicit instruction to disable the first TRP group as the main TRP group; or an implicit instruction to disable the first TRP group as the main TRP group.

[0146] In a twenty-second aspect, the L1 signaling or the L2 signaling indicates an enabled activation state for the second TRP group.

[0147] In the twenty-third aspect, the L1 signaling or the L2 signaling indicates at least one of: a main TRP group identifier; a SpCell TRP group identifier; a SpCell configuration; a TCI state associated with an activated SpCell; a reference signal associated with a beam management process; an L1 measurement configuration for a deactivated TRP group in the one or more TRP groups; or an L1 reporting configuration for reporting L1 measurements associated with the L1 measurement configuration.

[0148] In a twenty-fourth aspect, the primary TRP group identifier comprises at least one of: a pointer to the primary TRP group identifier; or a bit in a bitmap.

[0149] In a twenty-fifth aspect, the SpCell TRP group identifier includes at least one of: a pointer to a TRP group identifier associated with a TRP group to be activated as the SpCell among the multiple TRP groups; or an index of the TRP group to be activated as the SpCell.

[0150] In a twenty-sixth aspect, the SpCell configuration comprises at least one of: a pointer to the SpCell configuration; or a bit in a bitmap.

[0151] In a twenty-seventh aspect, the SpCell configuration indicates one SpCell configuration among a plurality of SpCell configurations supported by the UE.

[0152] In a twenty-eighth aspect, the SpCell configuration is based at least in part on an octet of bits indicated by the L1 signaling or the L2 signaling.

[0153] In a twenty-ninth aspect, the L1 signaling or the L2 signaling indicates a logical channel identifier specific to an activation state associated with a cell group.

[0154] In a thirtieth aspect, the TCI status indication activates the TCI status of the SpCellTRP group based at least in part on the beam management process.

[0155] In a thirty-first aspect, the L1 signaling or the L2 signaling conditionally avoids indicating the reference signal based at least in part on the SpCell TRP group having an enabled activation state.

[0156] In a thirty-second aspect, the L1 signaling or the L2 signaling conditionally indicates the reference signal based at least in part on the SpCell TRP group having an activation state of deactivated.

[0157] In a thirty-third aspect, the L1 signaling or the L2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier, and the SpCell configuration based at least in part on using a single octet of bits.

[0158] In a thirty-fourth aspect, the L1 signaling or the L2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier, and the SpCell configuration based at least in part on using: a first octet of bits for the primary TRP group identifier; a second octet of bits for the SpCell TRP group identifier; and a third octet of bits for the SpCell configuration.

[0159] In a thirty-fifth aspect, at least one of the first octet of bits, the second octet of bits, or the third octet of bits comprises reserved bits.

[0160] In the thirty-sixth aspect, selecting the TRP group modification includes: selecting the modification of the SpCell TRP group within the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

[0161] In a thirty-seventh aspect, the TRP group modification includes a TRP group activation state modification and a master TRP group modification, and the L1 signaling or L2 signaling indicates the TRP group modification in a single L1 message or a single L2 message.

[0162] In a thirty-eighth aspect, the L1 signaling or the L2 signaling indicates SpCell TRP group modification as at least a part of the single L1 message or the single L2 message.

[0163] In a thirty-ninth aspect, the TRP group modification includes a TRP group activation state modification and excludes a main TRP group modification, and the L1 signaling or L2 signaling indicates the TRP group modification in the single L1 message or the single L2 message based at least in part on conditionally excluding one or more fields associated with the main TRP group modification within the single L1 message or the single L2 message.

[0164] In the fortieth aspect, the L1 signaling or the L2 signaling indicates that the TRP group modification excludes the one or more fields associated with the main TRP group modification.

[0165] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 700. Additionally or alternatively, two or more blocks of the blocks of process 700 may be performed in parallel.

[0166] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a UE according to the present disclosure. Example process 800 is an example in which a UE (eg, UE 120) performs operations associated with TRP group activation and deactivation using L1 or L2 signaling.

[0167] like Figure 8 As shown in FIG. 8 , in some aspects, process 800 may include receiving, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured cell set including a plurality of TRP groups (block 810). In some aspects, the cell group may be an activated cell group of the configured cell set. For example, a UE (e.g., using Fig.10 The communication manager 140 and / or receiving component 1002 depicted in FIG. 1 receives an indication of a TRP group modification associated with a cell group of a configured set of cells including multiple TRP groups in at least one of L1 signaling or L2 signaling, as described above.

[0168] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include communicating in a wireless network based at least in part on the TRP group modification (block 820). For example, a UE (e.g., using Fig.10 The depicted communication manager 140 and / or configured cell set manager component 1008) can communicate in a wireless network based at least in part on TRP group modifications, as described above.

[0169] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0170] In a first aspect, the L1 signaling or L2 signaling includes at least one of the following: a TRP group activation MAC CE, a master TRP group configuration MAC CE, a joint TRP group activation and master TRP group configuration MAC CE, or a DCI.

[0171] In a second aspect, the TRP group modification includes a corresponding activation state of each TRP group in the plurality of TRP groups.

[0172] In a third aspect, the L1 signaling or the L2 signaling indicates an activation status field, and the activation status field indicates the corresponding activation status of each TRP group in the plurality of TRP groups.

[0173] In a fourth aspect, the activation status field comprises a bit field, each bit of the bit field is associated with a corresponding TRP group among the plurality of TRP groups, and each bit of the activation status field indicates the corresponding activation status associated with the corresponding TRP group.

[0174] In a fifth aspect, the first bit state indicates an enabled activation state, and the second bit state indicates a disabled activation state.

[0175] In a sixth aspect, each bit is associated with a corresponding TRP group identifier.

[0176] In a seventh aspect, the L1 signaling or the L2 signaling indicates a TRP group identifier associated with an activated TRP group among the plurality of TRP groups.

[0177] In an eighth aspect, the TRP group modification includes deactivating a first TRP group among the multiple TRP groups, and the L1 signaling or the L2 signaling indicates a measurement configuration field, which specifies at least one of: an L1 measurement configuration associated with an L1 measurement based at least in part on the first TRP group; or an L1 measurement reporting configuration associated with reporting the L1 measurement.

[0178] In a ninth aspect, the L1 signaling or the L2 signaling indicates a measurement inclusion status value for a reserved bit, and the measurement inclusion status value specifies that the L1 signaling or the L2 signaling includes the measurement configuration field.

[0179] In a tenth aspect, the L1 signaling or the L2 signaling indicates a plurality of measurement configuration fields, and each measurement configuration field of the plurality of measurement configuration fields is associated with a corresponding deactivated TRP group of the plurality of TRP groups.

[0180] In an eleventh aspect, the L1 signaling or the L2 signaling indicates the plurality of measurement configuration fields using an order based at least in part on a corresponding TRP group identifier of each deactivated TRP group in the plurality of TRP groups.

[0181] In a twelfth aspect, the order is based at least in part on increasing numerical values.

[0182] In a thirteenth aspect, each measurement configuration field indicates a corresponding L1 configuration specifying an association between at least two TRPs included in the corresponding deactivated TRP group.

[0183] In a fourteenth aspect, the L1 signaling or the L2 signaling indicates a corresponding reference signal identifier field for each deactivated TRP group in the plurality of TRP groups.

[0184] In a fifteenth aspect, the L1 signaling or the L2 signaling indicates a corresponding reference signal configuration for each activated TRP group among the plurality of TRP groups.

[0185] In a sixteenth aspect, the corresponding reference signal identifier field comprises an eight-bit field.

[0186] In a seventeenth aspect, the L1 signaling or L2 signaling indicates the number of activated TRP groups among the multiple TRP groups, and the number of activated TRP groups is based at least in part on at least one of: a first maximum number of activated cell groups specified by a communication standard; a second maximum number of available TRP groups; or a third maximum number of activated TRP groups supported by the UE.

[0187] In the eighteenth aspect, the TRP group modification includes changing the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups as the main TRP group to the second TRP group among the multiple TRP groups as the main TRP group.

[0188] In a nineteenth aspect, the L1 signaling or the L2 signaling indicates activation of the second TRP group as the primary TRP group.

[0189] In a twentieth aspect, the L1 signaling or the L2 signaling indicates: an explicit instruction to disable the first TRP group as the main TRP group; or an implicit instruction to disable the first TRP group as the main TRP group.

[0190] In a twenty-first aspect, the L1 signaling or the L2 signaling indicates an enabled activation state for the second TRP group.

[0191] In the twenty-second aspect, the L1 signaling or the L2 signaling indicates at least one of: a primary TRP group identifier; a SpCell TRP group identifier; a SpCell configuration; a TCI state associated with an activated SpCell; a reference signal associated with a beam management process; an L1 measurement configuration for a deactivated TRP group in the one or more TRP groups; or an L1 reporting configuration for reporting L1 measurements associated with the L1 measurement configuration.

[0192] In a twenty-third aspect, the primary TRP group identifier comprises at least one of: a pointer to the primary TRP group identifier; or a bit in a bitmap.

[0193] In a twenty-fourth aspect, the SpCell TRP group identifier includes at least one of: a pointer to a TRP group identifier associated with a TRP group to be activated as the SpCell among the multiple TRP groups; or an index of the TRP group to be activated as the SpCell.

[0194] In a twenty-fifth aspect, the SpCell configuration comprises at least one of: a pointer to the SpCell configuration; or a bit in a bitmap.

[0195] In a twenty-sixth aspect, the SpCell configuration indicates one SpCell configuration among a plurality of SpCell configurations supported by the UE.

[0196] In a twenty-seventh aspect, the SpCell configuration is based at least in part on an octet of bits indicated by the L1 signaling or the L2 signaling.

[0197] In a twenty-eighth aspect, the L1 signaling or the L2 signaling indicates a logical channel identifier specific to an activation state associated with a cell group.

[0198] In a twenty-ninth aspect, the TCI status indication activates the TCI status of the SpCellTRP group based at least in part on the beam management process.

[0199] In a thirtieth aspect, the L1 signaling or the L2 signaling conditionally avoids indicating the reference signal based at least in part on the SpCell TRP group having an enabled activation state.

[0200] In a thirty-first aspect, the L1 signaling or the L2 signaling conditionally indicates the reference signal based at least in part on the SpCell TRP group having a deactivated activation state.

[0201] In a thirty-second aspect, the L1 signaling or the L2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier, and the SpCell configuration based at least in part on using a single octet of bits.

[0202] In a thirty-third aspect, the L1 signaling or the L2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier, and the SpCell configuration based at least in part on using: a first octet of bits for the primary TRP group identifier; a second octet of bits for the SpCell TRP group identifier; and a third octet of bits for the SpCell configuration.

[0203] In a thirty-fourth aspect, at least one of the first octet of bits, the second octet of bits, or the third octet of bits comprises reserved bits.

[0204] In the thirty-fifth aspect, the TRP group modification includes changing the SpCell TRP group within the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

[0205] In a thirty-sixth aspect, the TRP group modification includes a TRP group activation state modification and a master TRP group modification, and the L1 signaling or L2 signaling indicates the TRP group modification in a single L1 message or a single L2 message.

[0206] In a thirty-seventh aspect, the L1 signaling or the L2 signaling indicates a SpCell TRP group modification as at least a portion of the single L1 message or the single L2 message.

[0207] In a thirty-eighth aspect, the TRP group modification includes a TRP group activation state modification and excludes a main TRP group modification, and the L1 signaling or L2 signaling indicates the TRP group modification in the single L1 message or the single L2 message based at least in part on conditionally excluding one or more fields associated with the main TRP group modification within the single L1 message or the single L2 message.

[0208] In a thirty-ninth aspect, the L1 signaling or the L2 signaling indicates that the TRP group modification excludes the one or more fields associated with the main TRP group modification.

[0209] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 800. Additionally or alternatively, two or more blocks of the blocks of process 800 may be performed in parallel.

[0210] Fig. 9 is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. Apparatus 900 may be a network node, or a network node may include apparatus 900. In some aspects, apparatus 900 includes a receiving component 902 and a transmitting component 904 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using receiving component 902 and transmitting component 904. As further shown, apparatus 900 may include a communication manager 150. Communication manager 150 may include one or more of a configured cell set manager component 908, etc.

[0211] In some aspects, the apparatus 900 may be configured to perform the Figure 8 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein (such as Figure 7 In some aspects, Fig. 9 The device 900 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in one or more memories. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0212] The receiving component 902 may receive communications from the device 906, such as reference signals, control information, data communications, or combinations thereof. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, one or more memories, or combinations thereof, of the described network nodes.

[0213] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 900 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, one or more memories, or combinations thereof of the described network nodes. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0214] The configured cell set manager component 908 can select, for a configured cell set including a plurality of TRP groups, a TRP group modification associated with a cell group of the configured cell set. In some aspects, the cell group can be an activated cell group of the configured cell set. The sending component 904 can send the TRP group modification in at least one of L1 signaling or L2 signaling.

[0215] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be Fig. 9 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The assembly of components (one or more components) shown may be described as being executable by Fig. 9 Another collection of components shown performs one or more functions.

[0216] Fig.101 is a diagram of an example apparatus 1000 for wireless communication according to the present disclosure. Apparatus 1000 may be a UE, or a UE may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using receiving component 1002 and transmitting component 1004. As further shown, apparatus 1000 may include a communication manager 140. Communication manager 140 may include one or more of a configured cell set manager component 1008, etc.

[0217] In some aspects, the apparatus 1000 may be configured to perform the Figure 8 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more of the processes described herein (such as Figure 8 In some aspects, Fig.10 The device 1000 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Fig.10 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in one or more memories. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0218] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1000. In some aspects, the receiving component 1002 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, one or more memories, or combinations thereof of the described UE.

[0219] Transmit component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1006. In some aspects, one or more other components of device 1000 may generate communications and may provide the generated communications to transmit component 1004 for transmission to device 1006. In some aspects, transmit component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1006. In some aspects, transmit component 1004 may include in conjunction with Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, one or more memories, or combinations thereof of the described UE. In some aspects, the transmit component 1004 can be co-located with the receive component 1002 in a transceiver.

[0220] The receiving component 1002 can receive, in at least one of L1 signaling or L2 signaling, an indication of a TRP group modification associated with a cell group of a configured cell set including a plurality of TRP groups. In some aspects, the cell group can be an activated cell group of the configured cell set. The configured cell set manager component 1008 can communicate in a wireless network based at least in part on the TRP group modification.

[0221] Fig.10 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.10 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.10 Two or more components shown may be implemented in a single component, or Fig.10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The assembly of components (one or more components) shown may be described as being executable by Fig.10 Another collection of components shown performs one or more functions.

[0222] The following provides an overview of some aspects of the disclosure:

[0223] Aspect 1: A method of wireless communication performed by a device of a network node, the method comprising: selecting, for a configured cell set including multiple transmit-receive point (TRP) groups, a TRP group modification associated with a cell group of the configured cell set; and sending the TRP group modification in at least one of layer 1 signaling or layer 2 signaling.

[0224] Aspect 2: A method according to Aspect 1, wherein the layer 1 signaling or the layer 2 signaling includes at least one of the following: a TRP group activation medium access control (MAC) control element (CE), a master TRP group configuration MAC CE, a joint TRP group activation and master TRP group configuration MAC CE or downlink control information (DCI).

[0225] Aspect 3: The method according to aspect 1 or aspect 2, wherein selecting the TRP group modification includes: selecting a corresponding activation state of each TRP group in the plurality of TRP groups.

[0226] Aspect 4: The method according to Aspect 3, wherein selecting the corresponding activation state includes: selecting a corresponding TRP group among the multiple TRP groups that include or exclude the activated cell group.

[0227] Aspect 5: The method according to Aspect 3 or Aspect 4, wherein the layer 1 signaling or the layer 2 signaling indicates an activation status field, and the activation status field indicates the corresponding activation status of each TRP group in the multiple TRP groups.

[0228] Aspect 6: A method according to Aspect 5, wherein the activation status field comprises a bit field, wherein each bit of the bit field is associated with a corresponding TRP group among the multiple TRP groups, and the method further comprises: setting each bit of the activation status field to a corresponding value indicating the corresponding activation state associated with the corresponding TRP group.

[0229] Aspect 7: The method according to aspect 6, wherein the first bit state indicates an enabled activation state, and the second bit state indicates a disabled activation state.

[0230] Aspect 8: A method according to Aspect 6 or Aspect 7, wherein each bit is associated with a corresponding TRP group identifier.

[0231] Aspect 9: The method according to any one of Aspects 5 to 8, wherein the layer 1 signaling or the layer 2 signaling indicates a TRP group identifier associated with an activated TRP group among the multiple TRP groups.

[0232] Aspect 10: A method according to any one of Aspects 5 to 9, wherein the TRP group modification includes deactivating a first TRP group among the multiple TRP groups, and wherein the layer 1 signaling or the layer 2 signaling indicates a measurement configuration field, and the measurement configuration field specifies at least one of the following: a layer 1 measurement configuration associated with a layer 1 measurement based at least in part on the first TRP group; or a layer 1 measurement reporting configuration associated with reporting the layer 1 measurement.

[0233] Aspect 11: The method according to aspect 10, wherein the layer 1 signaling or the layer 2 signaling indicates a measurement inclusion status value for a reserved bit, the measurement inclusion status value specifying that the layer 1 or the layer 2 signaling includes the measurement configuration field.

[0234] Aspect 12: The method according to Aspect 10 or Aspect 11, wherein the layer 1 signaling or the layer 2 signaling indicates multiple measurement configuration fields, wherein each measurement configuration field in the multiple measurement configuration fields is associated with a corresponding deactivated TRP group in the multiple TRP groups.

[0235] Aspect 13: A method according to Aspect 12, wherein the layer 1 signaling or the layer 2 signaling uses an order based at least in part on the corresponding TRP group identifier of each disabled TRP group in the multiple TRP groups to indicate the multiple measurement configuration fields.

[0236] Aspect 14: The method of aspect 13, wherein the order is based at least in part on increasing numerical values.

[0237] Aspect 15: The method according to any one of Aspects 12 to 14, wherein each measurement configuration field indicates a corresponding layer 1 configuration, and the corresponding layer 1 configuration specifies an association between at least two TRPs included in the corresponding deactivated TRP group.

[0238] Aspect 16: The method according to any one of Aspects 10 to 15, wherein the layer 1 signaling or the layer 2 signaling indicates a corresponding reference signal identifier field for each deactivated TRP group in the plurality of TRP groups.

[0239] Aspect 17: The method according to Aspect 16, wherein the layer 1 signaling or the layer 2 signaling indicates a corresponding reference signal configuration for each activated TRP group in the plurality of TRP groups.

[0240] Aspect 18: The method according to aspect 16 or aspect 17, wherein the corresponding reference signal identifier field comprises an eight-bit field.

[0241] Aspect 19: A method according to any one of Aspects 3 to 18, wherein the layer 1 signaling or layer 2 signaling indicates the number of activated TRP groups among the multiple TRP groups, wherein the number of activated TRP groups is based at least in part on at least one of: a first maximum number of activated cell groups specified by a communication standard; a second maximum number of available TRP groups; or a third maximum number of activated TRP groups supported by a user equipment (UE).

[0242] Aspect 20: A method according to any one of Aspects 1 to 19, wherein selecting the TRP group modification includes: selecting to change the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

[0243] Aspect 21: The method according to Aspect 20, wherein the layer 1 signaling or the layer 2 signaling indicates activation of the second TRP group as the main TRP group.

[0244] Aspect 22: The method according to Aspect 21, wherein the layer 1 signaling or the layer 2 signaling indicates: an explicit instruction to deactivate the first TRP group as the main TRP group; or an implicit instruction to deactivate the first TRP group as the main TRP group.

[0245] Aspect 23: The method according to any one of Aspects 20 to 22, wherein the layer 1 signaling or the layer 2 signaling indicates an enabled activation state for the second TRP group.

[0246] Aspect 24: A method according to any one of Aspects 20 to 23, wherein the layer 1 signaling or the layer 2 signaling indicates at least one of: a main TRP group identifier; a special cell (SpCell) TRP group identifier; a SpCell configuration; a transmit configuration indicator (TCI) state associated with an activated SpCell; a reference signal associated with a beam management process; a layer 1 measurement configuration for a deactivated TRP group in the one or more TRP groups; or a layer 1 reporting configuration for reporting layer 1 measurements associated with the layer 1 measurement configuration.

[0247] Aspect 25: A method according to Aspect 24, wherein the primary TRP group identifier comprises at least one of: a pointer to the primary TRP group identifier; or a bit in a bitmap.

[0248] Aspect 26: A method according to Aspect 24 or Aspect 25, wherein the SpCell TRP group identifier includes at least one of the following: a pointer to a TRP group identifier associated with a TRP group to be activated as a SpCell among the multiple TRP groups; or an index of the TRP group to be activated as the SpCell.

[0249] Aspect 27: The method according to any one of aspects 24 to 26, wherein the SpCell configuration comprises at least one of: a pointer pointing to the SpCell configuration; or a bit in a bitmap.

[0250] Aspect 28: The method according to aspect 27, wherein the SpCell configuration indicates one SpCell configuration among a plurality of SpCell configurations supported by a user equipment (UE).

[0251] Aspect 29: The method according to any one of aspects 24 to 28, wherein the SpCell configuration is based at least in part on an octet of bits indicated by the layer 1 signaling or the layer 2 signaling.

[0252] Aspect 30: The method according to any one of aspects 24 to 29, wherein the layer 1 signaling or the layer 2 signaling indicates a logical channel identifier specific to an activation state associated with a cell group.

[0253] Aspect 31: A method according to any one of aspects 24 to 30, wherein the TCI status indication activates the TCI status of the SpCell TRP group based at least in part on the beam management process.

[0254] Aspect 32: The method according to any one of aspects 24 to 31, wherein the layer 1 signaling or the layer 2 signaling conditionally avoids indicating the reference signal based at least in part on the SpCell TRP group having an enabled activation state.

[0255] Aspect 33: The method according to any one of aspects 24 to 32, wherein the layer 1 signaling or the layer 2 signaling conditionally indicates the reference signal based at least in part on the SpCell TRP group having an activation state of deactivated.

[0256] Aspect 34: A method according to any one of Aspects 24 to 33, wherein the layer 1 signaling or the layer 2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier and the SpCell configuration based at least in part on a single octet of bits.

[0257] Aspect 35: A method according to any one of Aspects 24 to 34, wherein the layer 1 signaling or the layer 2 signaling is at least partially based on using the following to indicate the primary TRP group identifier, the SpCell TRP group identifier and the SpCell configuration: a first octet of bits for the primary TRP group identifier; a second octet of bits for the SpCell TRP group identifier; and a third octet of bits for the SpCell configuration.

[0258] Aspect 36: The method of aspect 35, wherein at least one of the first octet of bits, the second octet of bits, or the third octet of bits comprises reserved bits.

[0259] Aspect 37: A method according to any one of Aspects 1 to 36, wherein selecting the TRP group modification includes: selecting a modification of the SpCell TRP group within the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

[0260] Aspect 38: A method according to any one of Aspects 1 to 37, wherein the TRP group modification includes TRP group activation state modification and master TRP group modification, and wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

[0261] Aspect 39: The method according to Aspect 38, wherein as at least part of the single layer 1 message or the single layer 2 message, the layer 1 signaling or the layer 2 signaling indicates SpCell TRP group modification.

[0262] Aspect 40: A method according to any one of Aspects 1 to 39, wherein the TRP group modification includes a TRP group activation state modification and excludes a main TRP group modification, and wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in the single layer 1 message or the single layer 2 message based at least in part on conditionally excluding one or more fields associated with the main TRP group modification within the single layer 1 message or the single layer 2 message.

[0263] Aspect 41: A method according to Aspect 40, wherein the layer 1 signaling or the layer 2 signaling indicates that the TRP group modification excludes the one or more fields associated with the main TRP group modification.

[0264] Aspect 42: A method of wireless communication performed by a device of a user equipment (UE), the method comprising: receiving in at least one of layer 1 signaling or layer 2 signaling an indication of a TRP group modification associated with a cell group of a configured cell set including multiple transmit-receive point (TRP) groups; and communicating in a wireless network based at least in part on the TRP group modification.

[0265] Aspect 43: A method according to Aspect 42, wherein the layer 1 signaling or the layer 2 signaling includes at least one of the following: a TRP group activation medium access control (MAC) control element (CE), a master TRP group configuration MAC CE, a joint TRP group activation and master TRP group configuration MAC CE, or downlink control information (DCI).

[0266] Aspect 44: A method according to Aspect 42 or Aspect 43, wherein the TRP group modification includes a corresponding activation state of each TRP group in the plurality of TRP groups.

[0267] Aspect 45: The method according to Aspect 44, wherein the layer 1 signaling or the layer 2 signaling indicates an activation status field, and the activation status field indicates the corresponding activation status of each TRP group in the multiple TRP groups.

[0268] Aspect 46: A method according to Aspect 45, wherein the activation status field comprises a bit field, each bit of the bit field is associated with a corresponding TRP group among the multiple TRP groups, and each bit of the activation status field indicates the corresponding activation status associated with the corresponding TRP group.

[0269] Aspect 47: The method according to aspect 46, wherein the first bit state indicates an enabled activation state and the second bit state indicates a disabled activation state.

[0270] Aspect 48: A method according to Aspect 46 or Aspect 47, wherein each bit is associated with a corresponding TRP group identifier.

[0271] Aspect 49: The method according to any one of Aspects 45 to 48, wherein the layer 1 signaling or the layer 2 signaling indicates a TRP group identifier associated with an activated TRP group among the multiple TRP groups.

[0272] Aspect 50: A method according to any one of Aspects 45 to 49, wherein the TRP group modification includes deactivating a first TRP group among the multiple TRP groups, and wherein the layer 1 signaling or the layer 2 signaling indicates a measurement configuration field, the measurement configuration field specifying at least one of: a layer 1 measurement configuration associated with a layer 1 measurement based at least in part on the first TRP group; or a layer 1 measurement reporting configuration associated with reporting the layer 1 measurement.

[0273] Aspect 51: The method according to aspect 50, wherein the layer 1 signaling or the layer 2 signaling indicates a measurement inclusion status value for a reserved bit, the measurement inclusion status value specifying that the layer 1 or the layer 2 signaling includes the measurement configuration field.

[0274] Aspect 52: A method according to Aspect 50 or Aspect 51, wherein the layer 1 signaling or the layer 2 signaling indicates multiple measurement configuration fields, wherein each measurement configuration field in the multiple measurement configuration fields is associated with a corresponding deactivated TRP group in the multiple TRP groups.

[0275] Aspect 53: A method according to Aspect 52, wherein the layer 1 signaling or the layer 2 signaling uses an order based at least in part on the corresponding TRP group identifier of each disabled TRP group in the multiple TRP groups to indicate the multiple measurement configuration fields.

[0276] Aspect 54: The method according to aspect 53, wherein the order is based at least in part on increasing numerical values.

[0277] Aspect 55: A method according to any one of Aspects 52 to 54, wherein each measurement configuration field indicates a corresponding layer 1 configuration, and the corresponding layer 1 configuration specifies an association between at least two TRPs included in the corresponding deactivated TRP group.

[0278] Aspect 56: A method according to any one of Aspects 50 to 55, wherein the layer 1 signaling or the layer 2 signaling indicates a corresponding reference signal identifier field for each deactivated TRP group in the plurality of TRP groups.

[0279] Aspect 57: The method according to Aspect 56, wherein the layer 1 signaling or the layer 2 signaling indicates a corresponding reference signal configuration for each activated TRP group in the plurality of TRP groups.

[0280] Aspect 58: The method according to aspect 56 or aspect 57, wherein the corresponding reference signal identifier field comprises an eight-bit field.

[0281] Aspect 59: A method according to any one of Aspects 44 to 58, wherein the layer 1 signaling or layer 2 signaling indicates the number of activated TRP groups among the multiple TRP groups, wherein the number of activated TRP groups is based at least in part on at least one of: a first maximum number of activated cell groups specified by a communication standard; a second maximum number of available TRP groups; or a third maximum number of activated TRP groups supported by the UE.

[0282] Aspect 60: A method according to any one of Aspects 42 to 59, wherein the TRP group modification includes changing the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups serving as the main TRP group to the second TRP group among the multiple TRP groups serving as the main TRP group.

[0283] Aspect 61: The method according to Aspect 60, wherein the layer 1 signaling or the layer 2 signaling indicates activation of the second TRP group as the main TRP group.

[0284] Aspect 62: A method according to Aspect 61, wherein the layer 1 signaling or the layer 2 signaling indicates: an explicit instruction to deactivate the first TRP group as the main TRP group; or an implicit instruction to deactivate the first TRP group as the main TRP group.

[0285] Aspect 63: A method according to any one of Aspects 60 to 62, wherein the layer 1 signaling or the layer 2 signaling indicates an enabled activation state for the second TRP group.

[0286] Aspect 64: A method according to any one of Aspects 60 to 63, wherein the layer 1 signaling or the layer 2 signaling indicates at least one of: a main TRP group identifier; a special cell (SpCell) TRP group identifier; a SpCell configuration; a transmit configuration indicator (TCI) state associated with an activated SpCell; a reference signal associated with a beam management process; a layer 1 measurement configuration for a deactivated TRP group in the one or more TRP groups; or a layer 1 reporting configuration for reporting layer 1 measurements associated with the layer 1 measurement configuration.

[0287] Aspect 65: A method according to Aspect 64, wherein the primary TRP group identifier comprises at least one of: a pointer to the primary TRP group identifier; or a bit in a bitmap.

[0288] Aspect 66: A method according to Aspect 64 or Aspect 65, wherein the SpCell TRP group identifier includes at least one of the following: a pointer to a TRP group identifier associated with a TRP group to be activated as a SpCell among the multiple TRP groups; or an index of the TRP group to be activated as the SpCell.

[0289] Aspect 67: A method according to any one of aspects 64 to 66, wherein the SpCell configuration comprises at least one of: a pointer to the SpCell configuration; or a bit in a bitmap.

[0290] Aspect 68: The method according to aspect 67, wherein the SpCell configuration indicates one SpCell configuration among a plurality of SpCell configurations supported by a user equipment (UE).

[0291] Aspect 69: A method according to any one of aspects 64 to 68, wherein the SpCell configuration is based at least in part on an octet of bits indicated by the layer 1 signaling or the layer 2 signaling.

[0292] Aspect 70: A method according to any one of aspects 64 to 69, wherein the layer 1 signaling or the layer 2 signaling indicates a logical channel identifier specific to an activation state associated with a cell group.

[0293] Aspect 71: A method according to any one of Aspects 64 to 70, wherein the TCI status indication activates the TCI status of the SpCell TRP group based at least in part on the beam management process.

[0294] Aspect 72: The method according to any one of aspects 64 to 71, wherein the layer 1 signaling or the layer 2 signaling conditionally avoids indicating the reference signal based at least in part on the SpCell TRP group having an enabled activation state.

[0295] Aspect 73: The method according to any one of aspects 64 to 72, wherein the layer 1 signaling or the layer 2 signaling conditionally indicates the reference signal based at least in part on the SpCell TRP group having an activation state of deactivated.

[0296] Aspect 74: A method according to any one of Aspects 64 to 73, wherein the layer 1 signaling or the layer 2 signaling indicates the primary TRP group identifier, the SpCell TRP group identifier and the SpCell configuration based at least in part on a single octet of bits.

[0297] Aspect 75: A method according to any one of Aspects 64 to 74, wherein the layer 1 signaling or the layer 2 signaling is at least partially based on using the following to indicate the primary TRP group identifier, the SpCell TRP group identifier and the SpCell configuration: a first octet of bits for the primary TRP group identifier; a second octet of bits for the SpCell TRP group identifier; and a third octet of bits for the SpCell configuration.

[0298] Aspect 76: The method according to aspect 75, wherein at least one of the first octet of bits, the second octet of bits, or the third octet of bits comprises reserved bits.

[0299] Aspect 77: A method according to any one of Aspects 42 to 76, wherein the TRP group modification includes a change of the SpCell TRP group within the master TRP group of the activated cell group from a first TRP group among the multiple TRP groups to a second TRP group among the multiple TRP groups.

[0300] Aspect 78: A method according to any one of Aspects 42 to 77, wherein the TRP group modification includes a TRP group activation state modification and a master TRP group modification, and wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

[0301] Aspect 79: The method according to Aspect 78, wherein as at least part of the single layer 1 message or the single layer 2 message, the layer 1 signaling or the layer 2 signaling indicates SpCell TRP group modification.

[0302] Aspect 80: A method according to any one of Aspects 42 to 79, wherein the TRP group modification includes a TRP group activation state modification and excludes a master TRP group modification, and wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in the single layer 1 message or the single layer 2 message based at least in part on conditionally excluding one or more fields associated with the master TRP group modification within the single layer 1 message or the single layer 2 message.

[0303] Aspect 81: A method according to Aspect 80, wherein the layer 1 signaling or the layer 2 signaling indicates that the TRP group modification excludes the one or more fields associated with the main TRP group modification.

[0304] Aspect 82: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 41.

[0305] Aspect 83: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 42 to 81.

[0306] Aspect 84: A device for wireless communication, the device comprising: one or more memories; and one or more processors, the one or more processors being coupled to the one or more memories, the one or more processors being individually or collectively configured to execute the methods described in one or more of Aspects 1 to 41.

[0307] Aspect 85: A device for wireless communication, the device comprising: one or more memories; and one or more processors, the one or more processors coupled to the one or more memories, the one or more processors being configured individually or collectively to execute one or more of the methods described in Aspects 42 to 81.

[0308] Aspect 86: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 41.

[0309] Aspect 87: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 42 to 81.

[0310] Aspect 88: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 41.

[0311] Aspect 89: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 42 to 81.

[0312] Aspect 90: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 41.

[0313] Aspect 91: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 42 to 81.

[0314] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0315] Further disclosure is included in the appendix. This appendix is ​​provided as an example only and is considered a part of this specification. The definitions, illustrations, or other descriptions in the appendix do not replace or cover similar information included in the specific embodiments or figures. In addition, the definitions, illustrations, or other descriptions in the specific embodiments or figures do not replace or cover similar information included in the appendix. In addition, this appendix is ​​not intended to limit the disclosure of possible aspects.

[0316] As used herein, the term "component" is intended to be broadly interpreted as hardware, and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes and / or functions, etc. As used herein, "processor" is implemented by a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, the operation and behavior of the system and / or method are not described herein with reference to specific software codes, because it will be understood by those skilled in the art that software and hardware can be designed to implement the system and / or method at least in part based on the description herein.

[0317] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0318] Although the specific combination of features is stated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically stated in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (for example, a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other sorting of a, b and c).

[0319] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only want to refer to a project, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A can also have B). In addition, the phrase "based on" is intended to represent "based at least in part", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless expressly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a network node, the apparatus comprising: one or more memories; and one or more processors coupled to the one or more memories and configured to cause the network node to: selecting, for a configured set of cells comprising a plurality of transmit-receive point (TRP) groups, a TRP group modification associated with a cell group of the configured set of cells; and The TRP group modification is sent in at least one of Layer 1 signaling or Layer 2 signaling.

2. The apparatus of claim 1 , wherein the layer 1 signaling or the layer 2 signaling comprises at least one of: The TRP group activates the Medium Access Control (MAC) Control Element (CE), The main TRP group configures MAC CE, Joint TRP group activation and master TRP group configuration MAC CE, or Downlink Control Information (DCI).

3. The apparatus of claim 1 , wherein in order for the network node to select the TRP group modification, the one or more processors are configured to cause the network node to: A corresponding activation state is selected for each TRP group in the plurality of TRP groups.

4. The apparatus according to claim 3, wherein the layer 1 signaling or the layer 2 signaling indicates an activation status field, and the activation status field indicates the corresponding activation status of each TRP group in the plurality of TRP groups.

5. The apparatus of claim 4, wherein the one or more processors are further configured to cause the network node to deactivate a first TRP group of the plurality of TRP groups, and The layer 1 signaling or the layer 2 signaling indicates a measurement configuration field, the measurement configuration field specifies at least one of the following: a layer 1 measurement configuration associated with layer 1 measurements based at least in part on said first TRP set, or A layer 1 measurement reporting configuration associated with reporting the layer 1 measurement. 6 . The apparatus of claim 5 , wherein the layer 1 signaling or the layer 2 signaling indicates a measurement inclusion status value for a reserved bit, the measurement inclusion status value specifying that the layer 1 or the layer 2 signaling includes the measurement configuration field.

7. The apparatus according to claim 5, wherein the layer 1 signaling or the layer 2 signaling indicates a plurality of measurement configuration fields, wherein each measurement configuration field in the plurality of measurement configuration fields is associated with a corresponding deactivated TRP group in the plurality of TRP groups.

8. The apparatus of claim 5, wherein the layer 1 signaling or the layer 2 signaling indicates a corresponding reference signal identifier field for each deactivated TRP group in the plurality of TRP groups.

9. The apparatus of claim 3, wherein the layer 1 signaling or the layer 2 signaling indicates a number of activated TRP groups among the plurality of TRP groups, wherein the number of activated TRP groups is based at least in part on at least one of: a first maximum number of activated cell groups specified by the communication standard, the second largest number of available TRP groups, or The third maximum number of activated TRP groups supported by the user equipment (UE).

10. The apparatus of claim 1, wherein in order for the network node to select the TRP group modification, the one or more processors are configured to cause the network node to: Select to change the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

11. The apparatus of claim 10, wherein the layer 1 signaling or the layer 2 signaling indicates at least one of: Primary TRP group identifier, Special cell (SpCell) TRP group identifier, SpCell configuration, The Transmit Configuration Indicator (TCI) status associated with the activated SpCell, Reference signals associated with the beam management process, a layer 1 measurement configuration for a disabled TRP group of the one or more TRP groups, or A layer 1 reporting configuration for reporting layer 1 measurements associated with the layer 1 measurement configuration.

12. The apparatus of claim 1 , wherein in order for the network node to select the TRP group modification, the one or more processors are configured to cause the network node to: Selecting a modification of the SpCell TRP group within the main TRP group of the activated cell group from a first TRP group among the multiple TRP groups to a second TRP group among the multiple TRP groups.

13. The apparatus of claim 1, wherein the TRP group modification comprises a TRP group activation state modification and a master TRP group modification, and Wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

14. The apparatus of claim 1, wherein the TRP group modification includes a TRP group activation state modification and excludes a master TRP group modification, and Wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in the single layer 1 message or the single layer 2 message based at least in part on conditionally excluding one or more fields associated with the primary TRP group modification within the single layer 1 message or the single layer 2 message.

15. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: one or more memories; and one or more processors, the one or more processors being coupled to the one or more memories and configured to cause the UE to: receiving, in at least one of layer 1 signaling or layer 2 signaling, an indication of a Transmit-Receive Point (TRP) group modification associated with a cell group of a configured set of cells comprising a plurality of TRP groups; and Communicating in a wireless network based at least in part on the TRP group modification.

16. The apparatus of claim 15, wherein the layer 1 signaling or the layer 2 signaling comprises at least one of: The TRP group activates the Medium Access Control (MAC) Control Element (CE), The main TRP group configures MAC CE, Joint TRP group activation and master TRP group configuration MAC CE, or Downlink Control Information (DCI).

17. The apparatus of claim 15, wherein the TRP group modification comprises a corresponding activation state of each of the plurality of TRP groups.

18. The apparatus according to claim 15, wherein the TRP group modification includes changing a main TRP group of the activated cell group from a first TRP group among the multiple TRP groups serving as the main TRP group to a second TRP group among the multiple TRP groups serving as the main TRP group.

19. The apparatus of claim 18, wherein the layer 1 signaling or the layer 2 signaling indicates at least one of: Primary TRP group identifier, Special cell (SpCell) TRP group identifier, SpCell configuration, The Transmit Configuration Indicator (TCI) status associated with the activated SpCell, Reference signals associated with the beam management process, a layer 1 measurement configuration for a disabled TRP group of the one or more TRP groups, or A layer 1 reporting configuration for reporting layer 1 measurements associated with the layer 1 measurement configuration.

20. The apparatus of claim 15, wherein the TRP group modification comprises changing a SpCell TRP group within a master TRP group of the activated cell group from a first TRP group among the plurality of TRP groups to a second TRP group among the plurality of TRP groups.

21. The apparatus of claim 15, wherein the TRP group modification comprises a TRP group activation state modification and a master TRP group modification, and Wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

22. The apparatus of claim 15, wherein the TRP group modification includes a TRP group activation state modification and excludes a master TRP group modification, and Wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in the single layer 1 message or the single layer 2 message based at least in part on conditionally excluding one or more fields associated with the primary TRP group modification within the single layer 1 message or the single layer 2 message.

23. A method of wireless communication performed by an apparatus of a network node, the method comprising: selecting, for a configured set of cells comprising a plurality of transmit-receive point (TRP) groups, a TRP group modification associated with a cell group of the configured set of cells; as well as The TRP group modification is sent in at least one of Layer 1 signaling or Layer 2 signaling.

24. The method of claim 23, wherein selecting the TRP group modification comprises: Select to change the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

25. The method of claim 23, wherein selecting the TRP group modification comprises: Select to modify the SpCell TRP group within the main TRP group of the activated cell group from the first TRP group among the multiple TRP groups to the second TRP group among the multiple TRP groups.

26. The method of claim 23, wherein the TRP group modification comprises a TRP group activation state modification and a master TRP group modification, and Wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

27. A method of wireless communication performed by a device of a user equipment (UE), the method comprising: receiving, in at least one of layer 1 signaling or layer 2 signaling, an indication of a Transmit-Receive Point (TRP) group modification associated with a cell group of a configured set of cells comprising a plurality of TRP groups; and Communicating in a wireless network based at least in part on the TRP group modification.

28. The method of claim 27, wherein the TRP group modification comprises a respective activation state of each of the plurality of TRP groups.

29. The method of claim 28, wherein the TRP group modification includes changing the main TRP group of the activated cell group from a first TRP group among the multiple TRP groups serving as the main TRP group to a second TRP group among the multiple TRP groups serving as the main TRP group.

30. The method of claim 27, wherein the TRP group modification comprises at least one of: a change of the SpCell TRP group within the master TRP group of the activated cell group from a first TRP group among the plurality of TRP groups to a second TRP group among the plurality of TRP groups, or TRP group activation state modification and master TRP group modification, wherein the layer 1 signaling or layer 2 signaling indicates the TRP group modification in a single layer 1 message or a single layer 2 message.

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