Reference signal selection in multiple transmit-receive point operations

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs and including an indicated TCI of a plurality of transmit configuration indicators (TCIs). The UE may receive an RS based on a selection rule of at least one beam failure determination (BFD) reference signal (RS) set, the selection rule indicating that the at least one BFD RS set includes at least one of: a source RS of the indicated TCI associated with the indicated TCI based on at least one CORESET, or a source RS of a non-indicated TCI of the plurality of TCIs associated with a respective TCI other than the indicated TCI based on each CORESET of the plurality of CORESETs. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 170,496, filed on February 16, 2023, entitled “REFERENCE SIGNAL SELECTION IN MULTIPLE TRANSMISSION RECEPTION POINT OPERATIONS,” and assigned to the assignee of the present application. The disclosure of the prior application is considered a part of and incorporated by reference into this patent application. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for reference signal selection in multiple transmission / reception point operations. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (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 communication for wireless communication devices, such as user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink and uplink communications. A "downlink" (or "DL") refers to the communication link from the network node to the UE, and an "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (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: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink and 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 to better integrate with other open standards; as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. 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 a user equipment (UE). The method may include receiving configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of transmit configuration indicators (TCIs). The method may include receiving a beam failure determination (BFD) reference signal (RS) based on a selection rule for at least one RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI among a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0008] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI from a plurality of TCIs. The method may include sending RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0009] Some aspects described herein relate to a user equipment (UE) for wireless communication. The user equipment may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI from a plurality of TCIs. The one or more processors may be configured to receive RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0010] Some aspects described herein relate to a network node for wireless communication. The network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs. The one or more processors may be configured to send RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET among the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI among a plurality of TCIs based on each CORESET among the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

[0011] 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 configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs and the configuration information also including an indicated TCI from a plurality of TCIs. The instruction set, when executed by the one or more processors of the UE, may cause the UE to receive RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to transmit configuration information associated with an mTRP operation, the configuration information indicating a plurality of core sets and including an indicated TCI from a plurality of TCIs. The set of instructions, when executed by the one or more processors of the network node, may cause the network node to transmit a RS based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS based on an indicated TCI associated with at least one core set in the plurality of core sets, or a source RS based on a non-indicated TCI from a plurality of TCIs associated with each core set in the plurality of core sets, wherein the non-indicated TCI is associated with at least one core set in the plurality of core sets.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs and the configuration information further including an indicated TCI from a plurality of TCIs. The apparatus may include means for receiving RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting configuration information associated with an mTRP operation, the configuration information indicating a plurality of CORESETs and the configuration information further including an indicated TCI from a plurality of TCIs. The apparatus may include means for transmitting RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs.

[0015] The various aspects collectively 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 accompanying drawings and description, and as illustrated in the accompanying drawings and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes 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 limitations to 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 incorporated into 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 compositions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the above-mentioned features of the present disclosure may be fully understood, a more particular description of the invention briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are not therefore to be considered limiting of its scope, as the description may admit to 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 3 is a diagram illustrating an example of multiple transmission reception point (mTRP) communication according to the present disclosure.

[0023] Figure 5 is a diagram illustrating an example of reference signal selection in an mTRP operation according to the present disclosure.

[0024] Figure 6is a diagram illustrating an example process performed, for example, by 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 of an example apparatus for wireless communications according to the present disclosure.

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

[0028] A control resource set (CORESET) can be configured to indicate that downlink control information (DCI) and / or physical downlink control channel (PDCCH) transmissions received on the CORESET are associated with a single frequency network (SFN). In some cases, a medium access control control element (MAC CE) activation command can be used to indicate two transmission configuration indicator (TCI) states. In some cases where a single PDCCH transmission is used, a beam failure detection (BFD) reference signal (RS) resource set can be indicated to the user equipment (UE). The UE can use the BFD RS resource set to identify the reference signals to receive and measure to determine whether a beam failure condition exists.

[0029] In an example, the UE may select a BFD RS set based on the indicated TCI. For example, when an indication of two TCIs is provided to the UE, the UE may use the source RS of each indicated TCI to identify the BFD RS set for the TRP. When the UE is indicated with only one indicated TCI, in some cases, the UE may determine cell-level beam failure recovery (BFR) to identify only a single BFD RS set. In some other cases, the UE may use a single indicated TCI and / or default rules to identify two BFD RS sets. In some cases, for example, the UE may use the previously and currently indicated TCIs to identify the BFD RS set. In some cases, the UE may use the lowest ID of the active TCI codepoints with two downlink and / or joint TCIs to identify the BFD RS set. When no TCI indication has been provided to the UE, the BFD-RS set may be configured via RRC. In some cases, the UE may use the lowest ID of the active TCI codepoints with two downlink and / or joint TCIs to identify two BFD RS sets. In some cases, the UE may use the default beam to identify a single BFD RS set for cell-level BFD.

[0030] For single DCI (sDCI) multiple transmit receive point (mTRP) operation, in some cases, for each CORESET associated with the common search space (CSS), the network may indicate whether the CORESET follows the indicated TCI. In some cases, the UE only selects BFD RSs corresponding to CORESETs that follow the indicated TCI. However, selecting BFD RSs based on CORESETs that follow the indicated TCI does not result in selecting BFD RSs for CORESETs that do not follow the indicated TCI, even if the maximum number of BFD RSs per set is greater than the number of source RSs for the indicated TCI. Therefore, selecting BFD RSs in this manner may result in an empty BFD RS set if no CORESET is configured to follow the indicated TCI, in which case beam failure may not be detected. Additionally, if no CORESET follows the indicated TCI, there may be no benefit in monitoring the indicated TCI for BFD RSs. In this case, CORESET-based selection may result in unnecessary monitoring, thereby unnecessarily increasing resource consumption.

[0031] Some aspects of the techniques and apparatus described herein provide for a UE to determine a beam failure reference signal resource set for beam failure detection for PDCCH monitoring operations corresponding to at least two TCI states, in which one or more CORESETs may not follow an indicated TCI. For example, in some aspects, the UE may identify a BFD RS set (e.g., per TRP and / or per CORESET pool ID) based on the indicated TCI and / or the TCI of the CORESETs that do not follow the indicated TCI. In some aspects, RSs corresponding to the CORESETs that follow the indicated TCI may be prioritized. For example, in some aspects, the UE may receive configuration information associated with mTRP operation. The configuration information may indicate multiple CORESETs and may include an indicated TCI from among multiple TCIs. In some aspects, the UE may receive RSs based on a selection rule for at least one BFD RS set. The selection rule may indicate that at least one BFD RS set includes at least one of the following: a source RS based on an indicated TCI associated with at least one CORESET of the plurality of CORESETs, or a source RS based on a non-indicated TCI of a plurality of TCIs associated with each CORESET of the plurality of CORESETs, wherein the non-indicated TCI is associated with at least one CORESET of the plurality of CORESETs. In this way, some aspects may facilitate the selection of BFD RSs in all cases (including cases where no CORESET follows the indicated TCI), thereby facilitating more efficient use of BFD monitoring resources and mitigating failures in detecting beam failures, thereby positively impacting network performance.

[0032] 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 construed as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, 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 will be appreciated 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 devices or methods implemented using other structures, functionality, or structure and functionality in addition to 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 claims.

[0033] The aspects and examples generally include methods, apparatus, network nodes, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as described or substantially described herein with reference to the figures and description and as illustrated in the figures and description.

[0034] The present disclosure can be easily used as a basis for modifying or designing other structures for carrying out 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 their organization and method of operation) and the associated advantages will be better understood from the following description when considered 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 limitations to the claims.

[0035] Although various aspects are described in the present disclosure by illustrating some examples, 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 incorporated into 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. Various aspects described herein can be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of different sizes, shapes and compositions.

[0036] 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, or algorithms (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0037] Although various aspects may be described herein using terminology 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 RATs, 4G RATs, and / or post-5G (e.g., 6G) RATs.

[0038] Figure 11 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 (illustrated as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (illustrated 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, meaning 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 disaggregated network node (sometimes referred to as a disaggregated base station), meaning 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)).

[0039] In some examples, network node 110 is or includes a network node (such as an RU) that communicates with UE 120 via a radio access link. In some examples, network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, network node 110 (such as a converged 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. 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, an RU, a CU, a mobility element of a network, a core network node, a network element, 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 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks.

[0040] In some examples, 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 ​​network node 110 and / or a network node subsystem serving that coverage area, depending on the context in which the term is used. Network node 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 120 with service subscriptions. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 associated with the femtocell (e.g., UEs 120 in a closed subscriber group (CSG)). A network node 110 for a macrocell may be referred to as a macro network node. A network node 110 for a picocell 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 1 In 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. A 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 a mobile network node 110 (e.g., a mobile network node).

[0041] In some aspects, the term "base station" or "network node" may refer to a converged 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 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 multiple 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.

[0042] 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 can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110 d (e.g., a relay network node) may communicate with a network node 110 a (e.g., a macro network node) and a UE 120 d to facilitate communications between the network node 110 a and the UE 120 d. 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.

[0043] 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).

[0044] 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 backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0045] UEs 120 may be dispersed throughout 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 smartphone), 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 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, 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.

[0046] Some UEs 120 may be considered 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 can communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. The UE 120 may be included within a housing that houses components of the 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, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0047] Generally speaking, 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. A RAT may be referred to as a radio technology, air interface, etc. A 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.

[0048] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 can 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 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0049] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 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 "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0050] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz to 24.25 GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0051] With the above examples in mind, unless otherwise specifically stated, it should be understood that if the term "sub-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. Additionally, 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, 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.

[0052] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in greater detail elsewhere herein, the communication manager 140 may receive configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs and the configuration information also including an indicated TCI among a plurality of transmit configuration indicators (TCIs); and receive a beam failure determination (BFD) reference signal (RS) based on a selection rule for at least one RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI among a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0053] 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 send configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs and the configuration information also including an indicated TCI from a plurality of TCIs; and send RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for the indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI from a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0054] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0055] 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 through 234t, such as T antennas (T ≥ 1). The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1). The network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232. 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 radio frequency components, such as one or more CUs or one or more DUs, that facilitate direct communication with the UE 120.

[0056] At network node 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) the data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. 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. 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., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as 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 through 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 frequency upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0057] At the UE 120, a set of antennas 252 (shown as antennas 252a through 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 through 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 the 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, if 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 a 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 determine, among other things, 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. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0058] 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.

[0059] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or 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, antenna group, group of antenna elements, and / or antenna array may include one or more antenna elements (within a single housing or multiple housings), a group of coplanar antenna elements, a group of non-coplanar antenna elements, and / or 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 in.

[0060] Each of the antenna elements may include one or more sub-elements for radiating or receiving radio frequency signals. For example, a single antenna element may include a first sub-element that is cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals. The antenna elements may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between the antenna elements may be such that signals having desired wavelengths transmitted individually by the antenna elements can interact or interfere (e.g., to form a desired beam). For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half a wavelength, or other fraction of a wavelength of the spacing between adjacent antenna elements to allow interaction or interference of signals transmitted by individual antenna elements within the desired range.

[0061] Antenna elements and / or subelements may be used to generate beams. A "beam" may refer to a wireless signal that is transmitted in a directional manner, such as in the direction of a receiving device. A beam may include a directional signal, a direction associated with the signal, a set of directional resources associated with the signal (e.g., angle of arrival, horizontal direction, vertical direction), and / or a set of parameters indicating one or more aspects of the directional signal, the direction associated with the signal, and / or the set of directional resources associated with the signal.

[0062] As indicated above, antenna elements and / or sub-elements can be used to generate beams. For example, antenna elements can be individually selected or deselected for transmission of a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers. Beamforming involves generating a beam using multiple signals on different antenna elements, where one or more or all of the multiple signals are shifted in phase relative to each other. The formed beam can carry physical or higher layer reference signals or information. When each of the multiple signals is radiated from the corresponding antenna element, the radiated signals interact with each other, interfere (constructively and destructively), and amplify to form the resulting beam. The shape (such as amplitude, width, and / or presence of side lobes) and direction (such as the angle of the beam relative to the surface of the antenna array) can be dynamically controlled by modifying the phase shift or phase offset of the multiple signals relative to each other.

[0063] Beamforming can be used for communication between a UE and a network node, such as for millimeter wave communication. In this case, the network node may provide the UE with configurations of TCI states, which respectively indicate beams that can be used by the UE, such as for receiving a physical downlink shared channel (PDSCH). The TCI state indicates the spatial parameters used for communication. For example, the TCI state used for communication may identify a source signal (such as a synchronization signal block, a channel state information reference signal, etc.) and the spatial parameters to be derived from the source signal for the purpose of sending or receiving communication. For example, the TCI state may indicate a quasi-co-location (QCL) type. The QCL type may indicate one or more spatial parameters to be derived from the source signal. The source signal may be referred to as a QCL source. The network node may indicate the activated TCI state to the UE, and the UE may use the activated TCI state to select a beam for receiving the PDSCH.

[0064] The beam indication may be or include a TCI state information element, a beam identifier (ID), spatial relationship information, a TCI state ID, a closed loop index, a panel ID, a TRP ID, and / or a sounding reference signal (SRS) set ID, etc. The TCI state information element (referred to herein as TCI state) may indicate information associated with a beam, such as a downlink beam. For example, the TCI state information element may indicate a TCI state identifier (e.g., tci-StateID), a QCL type (e.g., qcl-Type1, qcl-Type2, qcl-TypeA, qcl-TypeB, qcl-TypeC, qcl-TypeD, etc.), a cell identifier (e.g., ServCellIndex), a bandwidth part identifier (bwp-Id), a reference signal identifier (such as CSI-RS (e.g., NZP-CSI-RS-ResourceId, SSB-Index, etc.)), etc. The spatial relationship information may similarly indicate information associated with an uplink beam.

[0065] The beam indication can be a joint or individual downlink (DL) / uplink (UL) beam indication in a unified TCI framework. In some cases, the network can use at least UE-specific (unicast) downlink control information (DCI) to indicate a joint or individual DL / UL beam indication from an active TCI state, thereby supporting beam indication based on layer 1 (L1). In some cases, existing DCI formats 1_1 and / or 1_2 can be reused for beam indication. The network may include a support mechanism for the UE to confirm successful decoding of the beam indication. For example, the acknowledgement / negative acknowledgement (ACK / NACK) of the PDSCH scheduled by the DCI carrying the beam indication can also be used as an ACK for the DCI.

[0066] Beam indication can be provided for carrier aggregation (CA) scenarios. In the unified TCI framework, the network can support common TCI state ID update and activation information to provide common QCL and / or one or more common UL transmit spatial filters across the configured component carrier (CC) set. This type of beam indication is applicable to intra-band CA as well as joint DL / UL beam indication and individual DL / UL beam indication. Common TCI state ID may mean that a reference signal (RS) determined according to the TCI state indicated by the common TCI state ID is used to provide QCL type D indication and determine the UL transmit spatial filter across the configured CC set.

[0067] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. 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, if applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted 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 execute the instructions herein (eg, reference Figures 5 to 9 ) any aspects of any method described in the method.

[0068] At network node 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component (shown as DEMOD) of modem 232), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, modem 232 of network node 110 may include a modulator and a demodulator. In some examples, 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 execute the instructions herein (e.g., reference 242). Figures 5 to 9 ) any aspects of any method described in the method.

[0069] In some aspects, the controller / processor 280 may be a component of a processing system. A processing system may generally be a system or series of machines or components that receives input and processes the input to produce a set of outputs, which may be communicated to other systems or components, such as the UE 120. For example, the processing system of the UE 120 may be a system that includes various other components or subcomponents of the UE 120.

[0070] The processing system of UE 120 may interface with one or more other components of UE 120, may process information (such as input or signals) received from one or more other components, or may output information to one or more other components. For example, a chip or modem of UE 120 may include: a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, sending, or providing information. In some examples, the first interface may be an interface between the processing system of the chip or modem and a receiver, allowing UE 120 to receive information or signal input and pass the information to the processing system. In some examples, the second interface may be an interface between the processing system of the chip or modem and a transmitter, allowing UE 120 to transmit information output from the chip or modem. One of ordinary skill in the art will readily recognize that the second interface may also obtain or receive information or signal input, and the first interface may also output, send, or provide information.

[0071] In some aspects, controller / processor 240 may be a component of a processing system. A processing system may generally be a system or series of machines or components that receives input and processes the input to produce a set of outputs that may be passed to other systems or components, such as network node 110. For example, the processing system of network node 110 may be a system that includes various other components or subcomponents of network node 110.

[0072] The processing system of network node 110 may interface with one or more other components of network node 110, process information (such as input or signals) received from one or more other components, or output information to one or more other components. For example, a chip or modem of network node 110 may include a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, sending, or providing information. In some examples, the first interface may be an interface between the processing system of the chip or modem and a receiver, allowing network node 110 to receive information or signal input and pass information to the processing system. In some examples, the second interface may be an interface between the processing system of the chip or modem and a transmitter, allowing network node 110 to transmit information output from the chip or modem. Those skilled in the art will readily appreciate that the second interface may also obtain or receive information or signal input, and the first interface may also output, send, or provide information.

[0073] 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 reference signal selection in mTRP operation, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 6 The process of 600 Figure 7 700 and / or 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 (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of network node 110 and / or UE 120, may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 6The process of 600 Figure 7 The process 700 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.

[0074] In some aspects, the UE (e.g., UE 120) includes means for receiving (e.g., using the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the controller / processor 280, the memory 282, etc.) configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs and the configuration information also including an indicated TCI among a plurality of TCIs; and / or means for receiving (e.g., using the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the controller / processor 280, the memory 282, etc.) RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for the indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI among a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs. Means for a user equipment (UE) to perform the operations described herein may include, for example, one or more of the communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0075] In some aspects, the network node (e.g., network node 110) includes means for sending (e.g., using the controller / processor 240, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the memory 242, etc.) configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs; and / or means for sending (e.g., using the controller / processor 240, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the memory 242, etc.) RSs based on a selection rule for at least one BFD RS set, the selection rule indicating at least one BFD The RS set includes at least one of the following: a source RS based on an indicated TCI associated with at least one CORESET among the plurality of CORESETs and the indicated TCI, or a source RS based on a non-indicated TCI among a plurality of TCIs associated with each CORESET among the plurality of CORESETs and a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs. Means for the network node to perform the operations described herein may include, for example, one or more of the following: the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0076] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to 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.

[0077] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0078] 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 the network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated architecture or a decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functionality can be implemented as an aggregated base station (also known as an independent base station or a monolithic base station) or a decomposed base station. A "network entity" or a "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs or a combination thereof).

[0079] A converged base station (e.g., a converged network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually spread across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of the CUs, DUs, and RUs may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), among others.

[0080] Base station type operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate scaling of the communication system by separating base station functionality into one or more units that can be deployed separately. A disaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Each unit of the disaggregated base station may be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0081] Figure 3FIG2 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, a 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 via an F1 interface). Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0082] Each of the units (including the CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit, may be configured to communicate with one or more of the other units via the transmission medium. In some examples, each of the units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium and a wireless interface, wherein the wired interface may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0083] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, among others. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some implementations, the 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, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0084] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers, at least in part according to a functional split (such as that defined by 3GPP). In some aspects, the one or more higher PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like. In some aspects, the DU 330 may also host one or more lower PHY layers, such as those implemented by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, or physical random access channel (PRACH) extraction and filtering. Each layer (which may also be referred to as a module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0085] Each RU 340 may implement low-layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions based on functional split (e.g., functional split defined by 3GPP) (such as low-layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, real-time and non-real-time aspects of communicating with the control plane and user plane of the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0086] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operations and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform (such as the Open Cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements can include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some implementations, the SMO framework 305 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0087] The non-RT RIC 315 can be configured to include logic that enables 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 can be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 can be configured to include logic that enables near-real-time control and optimization of RAN elements and resources through data collection and actions over 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.

[0088] In some implementations, the non-RT RIC 315 can receive parameters or external enrichment information from an external server in order to generate an AI / ML model to be deployed in the near-RT RIC 325. Such information can be utilized by the near-RT RIC 325 and can be received from non-network data sources or from network functions 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 can be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 can monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or through the creation of RAN management policies (such as A1 interface policies).

[0089] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0090] Figure 4 is a diagram illustrating an example 400 of multi-TRP communication (sometimes referred to as multi-panel communication) according to the present disclosure. Figure 4 As shown, UE 405 can communicate with multiple TRPs 410. In some aspects, TRP 410 can be, include, or be combined with the above. Figure 1 and Figure 210. In some aspects, the base station 110 may include a control unit (CU) and / or one or more distributed units (DUs) (e.g., one or more TRPs 410) (e.g., one or more TRPs 410). In some cases, the TRP 410 may be referred to as a cell, panel, antenna array, or array. The UE 405 may be, include, or be configured as described above in conjunction with the above. Figure 1 and Figure 2 The UE 120 described herein may be, or may be included in, the UE.

[0091] In some aspects, multiple TRPs 410 may transmit communications (e.g., the same communication or different communications) in the same transmit time interval (TTI) (e.g., a slot, mini-slot, subframe, or symbol) or in different TTIs using different QCL relationships (e.g., different spatial parameters, different TCI states, different precoding parameters, and / or different beamforming parameters). In some aspects, the TCI state may be used to indicate one or more QCL relationships. A TRP 410 may be configured to provide services to a UE 120 individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRPs 410).

[0092] Multiple TRPs 410 (shown as TRP A and TRP B) can communicate with the same UE 405 in a coordinated manner (e.g., using coordinated multipoint transmission) to improve reliability and / or increase throughput. The TRPs 410 can coordinate such communications via an interface between the TRPs 410 (e.g., a backhaul interface and / or an access node controller). When the TRPs 410 are co-located at the same base station 110 (e.g., when the TRPs 410 are different antenna arrays or panels of the same base station 110), the interface can have lower latency and / or higher capacity, and when the TRPs 410 are located at different base stations 110, the interface can have higher latency and / or lower capacity (compared to co-location). Different TRPs 410 can communicate with the UE 405 using different QCL relationships (e.g., different TCI states), different DMRS ports, and / or different layers (e.g., of multi-layer communication).

[0093] In a multi-TRP transmission mode, multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH per PDSCH) and / or uplink data communications for multiple corresponding physical uplink shared channels (PUSCHs) (e.g., one PDCCH per PUSCH). In this case, for example, a first PDCCH may schedule a first codeword to be transmitted by a first TRP 410, and a second PDCCH may schedule a second codeword to be transmitted by a second TRP 410. In addition, a first DCI (e.g., transmitted by the first TRP 410) may schedule a first PDSCH communication associated with a first group of DMRS ports having a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 410, and a second DCI (e.g., transmitted by the second TRP 410) may schedule a second PDSCH communication associated with a second group of DMRS ports having a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 410. In this case, the DCI (e.g., having DCI format 1_0 or DCI format 1_1) may indicate a corresponding TCI state corresponding to the DCI for the TRP 410. The TCI field of the DCI indicates the corresponding TCI state (e.g., the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state).

[0094] like Figure 4 As shown, in some aspects, a first PDCCH (PDCCH 1) transmitted by a first TRP 410 (TRP A) may schedule a first PUSCH (PUSCH 1) for transmitting uplink data to TRP A 410, and a second TRP 410 (TRP B) may schedule a second PUSCH (PUSCH 2) for transmitting uplink data to TRP B 410. A CORESET pool index (or CORESETPoolIndex) value may be used by a UE 405 to identify a TRP associated with an uplink grant received on a PDCCH.

[0095] A "CORESET" may refer to a control region that is structured to support efficient use of resources, such as through flexible configuration or reconfiguration of resources for one or more PDCCHs associated with a UE. In some aspects, a CORESET may occupy the first symbol of an orthogonal frequency division multiplexing (OFDM) slot, the first two symbols of an OFDM slot, or the first three symbols of an OFDM slot. Thus, a CORESET may include multiple resource blocks (RBs) in the frequency domain, and one, two, or three symbols in the time domain. In 5G, the amount of resources included in a CORESET may be flexibly configured, such as by using radio resource control (RRC) signaling to indicate the frequency domain region (e.g., number of resource blocks) or the time domain region (e.g., number of symbols) of the CORESET.

[0096] like Figure 4 As illustrated, UE 405 may be configured to have multiple CORESETs in a given serving cell. Each CORESET configured for UE 405 may be associated with a CORESET identifier (CORESET ID). For example, a first CORESET configured for UE 405 may be associated with CORESET ID 1, a second CORESET configured for UE 405 may be associated with CORESET ID 2, a third CORESET configured for UE 405 may be associated with CORESET ID 3, and a fourth CORESET configured for UE 405 may be associated with CORESET ID 4.

[0097] like Figure 4 As further illustrated, two or more (e.g., up to five) CORESETs may be grouped into a CORESET pool. Each CORESET pool may be associated with a CORESET pool index. For example, CORESET ID 1 and CORESET ID 2 may be grouped into CORESET pool index 0, and CORESET ID 3 and CORESET ID 4 may be grouped into CORESET pool index 1. In a multi-TRP configuration, each CORESET pool index value may be associated with a specific TRP 410. As an example, and as Figure 4As illustrated, TRP A 410 may be associated with CORESET pool index 0, and TRP B 410 may be associated with CORESET pool index 1. The UE 405 may be configured with information identifying the association between a TRP and the CORESET pool index value assigned to the TRP via a higher layer parameter, such as PDCCH-Config. Thus, the UE 405 may identify the TRP that transmitted the DCI uplink grant by determining the CORESET ID of the CORESET in which the PDCCH carrying the DCI uplink grant was transmitted, determining the CORESET pool index value associated with the CORESET pool in which the CORESET ID is included, and identifying the TRP 410 associated with the CORESET pool index value. In some cases, the PUSCH may be time division multiplexed (TDM) (even across TRP / CORESETPoolIndex values), frequency division multiplexed (FDM), and / or spatial division multiplexed (SDM) in a given CC / serving cell.

[0098] The corresponding CORESET may be configured using an RRC transmission associated with higher layer parameters to indicate that downlink control information (DCI) and / or PDCCH transmissions received on the CORESET are associated with an SFN. In some cases, a medium access control element (MAC CE) activation command may be used to indicate two TCI states. In some cases using a single PDCCH transmission, a beam failure detection reference signal (RS) resource set may be indicated to the UE. The UE may use the beam failure RS to identify the reference signal to be received and measured to determine if a beam failure condition exists.

[0099] For example, in some cases, a set q0 of periodic CSI-RS configuration indices (e.g., using the parameter failureDetectionResources) and a set q1 of periodic CSI-RS configuration indices and / or synchronization signal (SS) / physical broadcast channel (PBCH) block indices (e.g., using the parameter candidateBeamRSList, the parameter candidateBeamRSListExt-r16, or the parameter candidateBeamRSSCellList-r16) may be provided to the UE for each bandwidth part (BWP) of the serving cell for radio link quality measurement on the BWP of the serving cell. In some cases, if q0 is not provided to the UE for the BWP of the serving cell, the UE may determine the set q0 to include a periodic CSI-RS resource configuration index having the same value as the RS index in the RS set indicated by the TCI state indication parameter (e.g., the parameter TCI-State) of the corresponding CORESET used by the UE to monitor the PDCCH. If there are two RS indices in a TCI state, set q0 may include RS indices having a QCL-Type D configuration for the corresponding TCI state. In some cases, set q0 may include at most two RS indices.

[0100] UE can be configured to expect a set Contains at most two RS indices. If provided to the UE or Then the UE determines the set or collection Contains at most N parameters indicated by capabilityparametername BFD RS index. If no RS index is provided to the UE or And if the number of active TCI states for PDCCH reception in the first CORESET or the second CORESET is greater than N BFD , the UE determines the set according to the ascending order of PDCCH monitoring periodicity or A periodic CSI-RS resource configuration index is included, the periodic CSI-RS resource configuration index having the same value as the RS index in the RS set associated with the active TCI state for PDCCH reception in the first CORESET or the second CORESET corresponding to the search space set. If more than one first CORESET or second CORESET corresponds to a search space set with the same monitoring periodicity, the UE determines the order of the first CORESET or the second CORESET according to the descending order of the CORESET index.

[0101] In an example, the UE may select a BFD RS set based on an indicated TCI. For example, when an indication of two TCIs is provided to the UE, the UE may use the source RS of each indicated TCI to identify the BFD RS set of the TRP. When the UE is indicated with only one indicated TCI, in some cases, the UE may determine the cell-level BFR to identify only a single BFD RS set. In some other cases, the UE may use a single indicated TCI and / or default rules to identify two BFD RS sets. In some cases, for example, the UE may use the previously and currently indicated TCIs to identify the BFD RS set. In some cases, the UE may use the lowest ID of the active TCI code points with two downlink and / or joint TCIs to identify the BFD RS set. When an indication of any TCI has not been provided to the UE, the BFD-RS set may be configured via RRC. In some cases, the UE may use the lowest ID active TCI code point with two downlink and / or joint TCIs to identify two BFD RS sets. In some cases, the UE may use a default beam (eg, a synchronization signal block (SSB) for RACH) to identify a single BFD RS set for cell-level BFD.

[0102] For sDCI mTRP, in some cases, for each CORESET associated with a Type 0 / 0A / 1 / 2 common search space (CSS), the RRC bit followIndicatedTCI can be used to indicate whether the CORESET follows the indicated TCI. In some cases, the UE only selects BFD RSs corresponding to CORESETs that follow the indicated TCI. However, selecting a BFD RS based on a CORESET that follows the indicated TCI does not result in selecting a BFD RS for a CORESET that does not follow the indicated TCI, even if the maximum number of BFD RSs per set is greater than the number of source RSs for the indicated TCI. Therefore, selecting a BFD RS in this manner may result in an empty BFD RS set if no CORESET is configured to follow the indicated TCI, in which case beam failure may not be detected. Additionally, if no CORESET follows the indicated TCI, there may be no benefit in monitoring the indicated TCI for the BFD RS. In this case, CORESET-based selection may result in unnecessary monitoring, thereby unnecessarily increasing resource consumption.

[0103] Some aspects of the techniques and apparatus described herein provide for a UE to determine a beam failure reference signal resource set for beam failure detection for PDCCH monitoring operations corresponding to at least two TCI states, in which one or more CORESETs may not follow an indicated TCI. For example, in some aspects, the UE may identify a BFD RS set (e.g., per TRP and / or per CORESET pool ID) based on the indicated TCI and / or the TCI of the CORESETs that do not follow the indicated TCI. In some aspects, RSs corresponding to the CORESETs that follow the indicated TCI may be prioritized. For example, in some aspects, the UE may receive configuration information associated with mTRP operation. The configuration information may indicate multiple CORESETs and may include an indicated TCI from among multiple TCIs. In some aspects, the UE may receive RSs based on a selection rule for at least one BFD RS set. The selection rule may indicate that at least one BFD RS set includes at least one of the following: a source RS based on an indicated TCI associated with at least one CORESET of the plurality of CORESETs, or a source RS based on a non-indicated TCI of a plurality of TCIs associated with each CORESET of the plurality of CORESETs, wherein the non-indicated TCI is associated with at least one CORESET of the plurality of CORESETs. In this way, some aspects may facilitate the selection of BFD RSs in all cases (including cases where no CORESET follows the indicated TCI), thereby facilitating more efficient use of BFD monitoring resources and mitigating failures in detecting beam failures, thereby positively impacting network performance.

[0104] Figure 5 5 is a diagram illustrating an example 500 of reference signal selection in mTRP operation according to the present disclosure. Figure 5 As shown, UE 502 and network node 504 can communicate with each other. In some aspects, UE 502 can be, be similar to, or include Figures 1 to 3 In some aspects, the network node 504 may be, be similar to, or include the UE 120 depicted in FIG. Figure 1 and Figure 2 The network node 110 depicted in FIG. Figure 3 In some aspects, the network node 504 may be, include, or be included in one or more components of the decomposed base station architecture 300 depicted in FIG.

[0105] As indicated by reference numeral 506, network node 504 may send configuration information, and UE 502 may receive the configuration information. The configuration information may be associated with mTRP operation and may indicate multiple CORESETs. The configuration information may include an indicated TCI from among the multiple TCIs. As indicated by reference numeral 508, network node 504 may send a communication, and UE 502 may receive the communication. The communication may indicate that the multiple TCIs are associated with the TRP. In some aspects, the communication may include an RRC message, a MAC CE, and / or a DCI transmission.

[0106] As indicated by reference numeral 510, UE 502 may identify at least one BFD RS set. For example, in some aspects, UE 502 may identify at least one BFD RS set based on a selection rule for the at least one BFD RS set. The selection rule may indicate that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in a plurality of CORESETs being associated with an indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI. The non-indicated TCI may be associated with at least one CORESET in the plurality of CORESETs other than the CORESET that follows the indicated TCI. In some aspects, the selection rule may further indicate that the at least one BFD RS set includes a source RS for a non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

[0107] If there is at least one CORESET that follows the indicated TCI, the UE 502 may select a source RS corresponding to the indicated TCI. If the number of selected BFD RSs is less than the UE capability of the maximum number of BFD RSs per set, the UE may select a source RS corresponding to the configured TCI of a CORESET that does not follow the indicated TCI. The association of the CORESET with the BFD RS (and / or TRP) may be performed according to a selection rule, which may also indicate that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET in the plurality of CORESETs, the at least one additional CORESET being associated with at least one additional TCI in the plurality of TCIs different from the indicated TCI, based on the maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1. In some aspects, the number of source RSs in the at least one additional source RS may be less than or equal to the maximum number value minus 1. In some aspects, based on the first CORESET having an even CORESET ID, the first CORESET may be associated with a first BFD RS set in at least one BFD RS set, and based on the second CORESET having an odd CORESET ID, the second CORESET may be associated with a second BFD RS set in at least one BFD RS set.

[0108] In some aspects, the selection order associated with the plurality of CORESETs may be based on at least one of a synchronization set monitoring periodicity or a CORESET ID associated with each of the plurality of CORESETs. In some aspects, based on the first CORESET including a first selected CORESET based on the selection order, the first CORESET may be associated with a first BFD RS set in the at least one BFD RS set, and based on the second CORESET including a second selected CORESET based on the selection order, the second CORESET may be associated with a second BFD RS set in the at least one BFD RS set.

[0109] In some aspects, if the mTRP operation includes mDCI mTRP operation, the configuration information may indicate a coreset pool having a first coreset pool ID and may include a plurality of coresets. The configuration information may also indicate an additional coreset pool having a second coreset pool ID and including an additional plurality of coresets. The selection rule may be applied to a first coreset pool ID of a first BFD RS set in the at least one BFD RS set and a second coreset pool ID of a second BFD RS set in the at least one BFD RS set.

[0110] In some aspects, the UE 502 may determine that the mTRP operation includes sDCI mTRP operation. For example, to determine that the mTRP operation includes sDCI mTRP operation, the UE may determine that two candidate beam sets are configured and / or two TCIs are indicated, and zero or only a single CORESET pool ID value is provided. In some other aspects, the UE 502 may receive an explicit indication of sDCI mTRP operation. For example, the explicit indication may include an RRC flag, a MAC CE, and / or a DCI indicator. In either case, when only one BFD RS set is configured or no BFD RS set is configured, the UE 502 may use a selection rule to select the (remaining) BFD RS.

[0111] For example, for sDCI mTRP operation, the configuration information may indicate multiple TRP IDs. Multiple CORESETs may be associated with a first TRP ID among the multiple TRP IDs, and additional multiple CORESETs may be associated with a second TRP ID among the multiple TRP IDs. The selection rule may be applied to the first TRP ID of the first BFD RS set in the at least one BFD RS set and the second TRP ID of the second BFD RS set in the at least one BFD RS set.

[0112] In some aspects, UE 502 may determine that mTRP operation includes sDCI mTRP operation. Under sDCI mTRP operation, UE 502 may report whether it supports the ability to operate two default beams. The default beam may be identified based on one or more predefined rules and may be used for the default case of indication. For example, when the time offset between the scheduled DCI and the scheduled PDSCH and / or aperiodic CSI-RS is less than a predefined scheduling threshold duration, UE 502 may identify a default beam for PDSCH and / or aperiodic CSI-RS reception. In some aspects, each of the identified default beams may correspond to a TRP for mTRP operation. When UE 504 reports its ability to support two default beams, UE 502 may also be configured to enable two default beam operations, for example, by enabling a flag bit in RRC. For example, when the indicated TCI code point contains two joint and / or DL ​​TCI states, the two TCI states may be identified as default beams. When the indicated TCI has only one joint and / or DL ​​TCI state, the indicated TCI may be identified for one of the default beams. In this case, the UE 502 identifies a single default beam or uses additional predefined rules to identify another default beam. For example, the other default beam may be identified based on the previously indicated TCI or the lowest activated TCI code point with two TCI states or a single TCI state.

[0113] In some aspects, multiple CORESETs may be associated with the first BFD RS set based on multiple TCIs associated with the multiple CORESETs being associated with a TRP corresponding to a first BFD RS set in the at least one BFD RS set. For example, in some aspects, the UE 502 may receive a MAC CE activating TCI codepoints, each of which may include one TCI or two TCIs. If the DCI transmission indicates a TCI codepoint with two TCIs, the first TCI may be associated with the first TRP (e.g., the first TCI may be the indicated TCI for the first TRP), and the second TCI may be associated with the second TRP. If the TCI includes only a single TCI, the DCI transmission may also indicate the association of the TCI with the TRP. For example, the existing TCI field may include a subfield that indicates whether the TCI codepoint mapped to the single TCI is updated for the first indicated TCI or the second indicated TCI (e.g., the TCI for the TRP or the TCI for the second TRP, respectively). The UE 502 may use the indicated association to identify the association with the TRP and the TCI, and for a CORESET using the TCI associated with the i th TRP, a BFD RS based on the CORESET identification may be associated with the i th BFD RS set.

[0114] The network node 504 may transmit a reference signal, and the UE 502 may receive the reference signal, as indicated by reference numeral 512. The reference signal may be based on the selection rules described above.

[0115] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0116] Figure 6 is a diagram illustrating an example process 600, for example, performed by a UE, according to the present disclosure. Example process 600 is an example in which a UE (eg, UE 502) performs operations associated with reference signal selection in mTRP operations.

[0117] like Figure 6 As shown, in some aspects, process 600 may include receiving configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs (block 610). For example, a UE (e.g., using Figure 8 The communication manager 808 and / or receiving component 802 depicted in FIG may receive configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs, as described above, for example, with reference to FIG. Figure 5 described.

[0118] like Figure 6 As further shown, in some aspects, process 600 may include receiving RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs (block 620). For example, a UE (e.g., using Figure 8 The communication manager 808 and / or receiving component 802 depicted in FIG may receive RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs, as described above, for example, with reference to Figure 5 described.

[0119] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0120] In a first aspect, the selection rule further indicates that the at least one BFD RS set includes source RSs for non-indicated TCIs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1. In a second aspect, either alone or in combination with the first aspect, the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET in a plurality of CORESETs, the at least one additional CORESET being associated with at least one additional TCI in a plurality of TCIs that is different from the indicated TCI, based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1. In a third aspect, either alone or in combination with the second aspect, the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1.

[0121] In a fourth aspect, alone or in combination with one or more of the second or third aspects, based on the first CORESET having an even-numbered CORESET ID, the first CORESET is associated with a first BFD RS set in at least one BFD RS set, and based on the second CORESET having an odd-numbered CORESET ID, the second CORESET is associated with a second BFD RS set in at least one BFD RS set. In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each of the plurality of CORESETs. In a sixth aspect, alone or in combination with the fifth aspect, based on the first CORESET including a first selected CORESET based on the selection order, the first CORESET is associated with a first BFD RS set in at least one BFD RS set, and based on the second CORESET including a second selected CORESET based on the selection order, the second CORESET is associated with a second BFD RS set in at least one BFD RS set.

[0122] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the mTRP operation includes a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including multiple CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional multiple CORESETs, and wherein the selection rule is applied to a first CORESET pool ID of a first BFD RS set in at least one BFD RS set and a second CORESET pool ID of a second BFD RS set in at least one BFD RS set. In an eighth aspect, alone or in combination with one or more of the first to sixth aspects, the mTRP operation includes single downlink control information (sDCI) mTRP operation, the configuration information indicates multiple TRP identifiers (IDs), wherein multiple CORESETs are associated with a first TRP ID among multiple TRPIDs, and additional multiple CORESETs are associated with a second TRP ID among the multiple TRP IDs, and wherein a selection rule is applied to a first TRP ID of a first BFD RS set in at least one BFD RS set and a second TRP ID of a second BFD RS set in at least one BFD RS set.

[0123] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, based on a plurality of TCIs associated with the plurality of CORESETs being associated with a TRP corresponding to a first BFD RS set in at least one BFD RS set, the plurality of CORESETs are associated with the first BFD RS set. In a tenth aspect, alone or in combination with the ninth aspect, the process 600 includes receiving a communication indicating that the plurality of TCIs are associated with the TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control control element (MAC CE), or a downlink control information (DCI) transmission.

[0124] although Figure 6 Example blocks of process 600 are shown, but in some aspects, process 600 may include Figure 6 6. In some embodiments, the process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 600 may be executed in parallel.

[0125] Figure 7 is a diagram illustrating an example process 700, for example, performed by a network node, in accordance with the present disclosure. Example process 700 is an example in which a network node (eg, network node 504) performs operations associated with reference signal selection in mTRP operations.

[0126] like Figure 7 As shown, in some aspects, process 700 may include sending configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs (block 710). For example, a network node (e.g., using Figure 9 The communication manager 908 and / or the sending component 904 depicted in FIG may send configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs, as described above, for example, with reference to FIG. Figure 5 described.

[0127] like Figure 7As further shown, in some aspects, process 700 may include transmitting RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs (block 720). For example, a network node (e.g., using Figure 9 The communication manager 908 and / or the sending component 904 depicted in FIG may send the RS based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs, as described above, for example, with reference to Figure 5 described.

[0128] 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.

[0129] In a first aspect, the selection rule further indicates that the at least one BFD RS set includes source RSs for non-indicated TCIs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1. In a second aspect, either alone or in combination with the first aspect, the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET in the plurality of CORESETs, the at least one additional CORESET being associated with at least one additional TCI in the plurality of TCIs that is different from the indicated TCI based on the maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1. In a third aspect, either alone or in combination with the second aspect, the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1. In a fourth aspect, either alone or in combination with one or more of the second or third aspects, based on the first CORESET having an even CORESET ID, the first CORESET is associated with a first BFD RS set in the at least one BFD RS set, and based on the second CORESET having an odd CORESET ID, the second CORESET is associated with a second BFD RS set in the at least one BFD RS set.

[0130] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each CORESET in the plurality of CORESETs. In a sixth aspect, alone or in combination with the fifth aspect, based on a first CORESET including a first selected CORESET based on a selection order, the first CORESET is associated with a first BFD RS set in at least one BFD RS set, and based on a second CORESET including a second selected CORESET based on a selection order, the second CORESET is associated with a second BFD RS set in at least one BFD RS set.

[0131] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the mTRP operation includes a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including multiple CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional multiple CORESETs, and wherein the selection rule is applied to a first CORESET pool ID of a first BFD RS set in at least one BFD RS set and a second CORESET pool ID of a second BFD RS set in at least one BFD RS set. In an eighth aspect, alone or in combination with one or more of the first to sixth aspects, the mTRP operation includes single downlink control information (sDCI) mTRP operation, the configuration information indicates multiple TRP identifiers (IDs), wherein multiple CORESETs are associated with a first TRP ID among multiple TRPIDs, and additional multiple CORESETs are associated with a second TRP ID among the multiple TRP IDs, and wherein a selection rule is applied to a first TRP ID of a first BFD RS set in at least one BFD RS set and a second TRP ID of a second BFD RS set in at least one BFD RS set.

[0132] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, based on a plurality of TCIs associated with the plurality of CORESETs being associated with a TRP corresponding to a first BFD RS set in at least one BFD RS set, the plurality of CORESETs are associated with the first BFD RS set. In a tenth aspect, alone or in combination with the ninth aspect, the process 700 includes sending a communication indicating that the plurality of TCIs are associated with the TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control control element (MAC CE), or a downlink control information (DCI) transmission.

[0133] although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7 7. In some embodiments, the process 700 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 700 may be executed in parallel.

[0134] Figure 8800 is a diagram of an example apparatus 800 for wireless communication according to the present disclosure. Apparatus 800 may be a UE, or a UE may include apparatus 800. In some aspects, apparatus 800 includes a receiving component 802 and a transmitting component 804, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 800 may use receiving component 802 and transmitting component 804 to communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 800 may include a communication manager 808.

[0135] In some aspects, the apparatus 800 may be configured to perform Figure 5 Additionally or alternatively, the apparatus 800 may be configured to perform one or more processes described herein, such as Figure 6 The process 600. In some aspects, Figure 8 The apparatus 800 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Figure 8 One or more components shown may be combined in Figure 2 Additionally or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are 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.

[0136] The receiving component 802 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 806. The receiving component 802 may provide the received communications to one or more other components of the device 800. In some aspects, the receiving component 802 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 800. In some aspects, the receiving component 802 may include in conjunction with Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0137] The transmitting component 804 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 806. In some aspects, one or more other components of the device 800 may generate communications and may provide the generated communications to the transmitting component 804 for transmission to the device 806. In some aspects, the transmitting component 804 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 the device 806. In some aspects, the transmitting component 804 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmitting component 804 can be co-located with the receiving component 802 in a transceiver.

[0138] In some examples, the means for sending, outputting, or transmitting (or the means for outputting for sending) may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, or a combination thereof of a described UE.

[0139] In some examples, the means for receiving (or the means for obtaining) may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, or a combination thereof of a described UE.

[0140] In some cases, a device may not actually send, for example, signals and / or data, but may have an interface (components for outputting) for outputting signals and / or data for transmission. For example, a processor may output signals and / or data to an RF front end via a bus interface for transmission. Similarly, a device may not actually receive signals and / or data, but may have an interface (components for obtaining) for obtaining signals and / or data received from another device. For example, a processor may obtain (or receive) signals and / or data from an RF front end via a bus interface for reception. In various aspects, the RF front end may include various components, including, for example, Figure 2 The transmitting and receiving processors, transmitting and receiving MIMO processors, modulators, demodulators, etc. described in the examples.

[0141] In some examples, the components for obtaining, receiving, outputting, sending, executing, and / or determining include the above in combination with Figure 2 Various processing system components of a UE are described, such as a receive processor, a transmit processor, a controller / processor, memory, or a combination thereof.

[0142] The communication manager 808 and / or the receiving component 802 may receive configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs. In some aspects, the communication manager 808 may include in conjunction with Figure 2 One or more antennas, modems, controllers / processors, memories, or combinations thereof of the UE described herein. In some aspects, the communication manager 808 may include a receiving component 802 and / or a sending component 804. In some aspects, the communication manager 808 may be, be similar to, or include Figure 1 and Figure 2 The communication manager 140 depicted in, or included in, the communication manager.

[0143] The communication manager 808 and / or the receiving component 802 may receive RSs based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs. The communication manager 808 and / or the receiving component 802 may receive a communication indicating that the plurality of TCIs are associated with a TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control control element (MAC CE), or a downlink control information (DCI) transmission.

[0144] Figure 8 The number and arrangement of components shown in FIG are provided as examples. In practice, there may be Figure 8 Additional components, fewer components, different components, or components arranged differently than those shown in FIG. Figure 8 Two or more components shown in FIG may be implemented in a single component, or Figure 8 A single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 A set (one or more) of components shown in the example may be described as being executed by Figure 8 Another group of components shown in FIG.

[0145] Figure 9is 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, which 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 908.

[0146] In some aspects, the apparatus 900 may be configured to perform Figure 5 Additionally or alternatively, the apparatus 900 may be configured to perform one or more of the processes described herein, such as Figure 7 The process 700. In some aspects, Figure 9 The device 900 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, one or more components of the described network node. Figure 9 One or more components shown may be combined in Figure 2 Additionally or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are 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.

[0147] The receiving component 902 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 906. 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, memories, or combinations thereof, of the described network nodes.

[0148] The transmitting component 904 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 906. In some aspects, one or more other components of the device 900 may generate communications and may provide the generated communications to the transmitting component 904 for transmission to the device 906. In some aspects, the transmitting 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 the device 906. In some aspects, the transmitting component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the transmitting component 904 can be co-located with the receiving component 902 in a transceiver.

[0149] In some examples, the means for sending, outputting, or transmitting (or the means for outputting for sending) may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, or a combination thereof, of the described network nodes.

[0150] In some examples, the means for receiving (or the means for obtaining) may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, or combinations thereof, of the described network nodes.

[0151] In some cases, a device may not actually send, for example, signals and / or data, but may have an interface (components for outputting) for outputting signals and / or data for transmission. For example, a processor may output signals and / or data to an RF front end via a bus interface for transmission. Similarly, a device may not actually receive signals and / or data, but may have an interface (components for obtaining) for obtaining signals and / or data received from another device. For example, a processor may obtain (or receive) signals and / or data from an RF front end via a bus interface for reception. In various aspects, the RF front end may include various components, including, for example, Figure 2 The transmitting and receiving processors, transmitting and receiving MIMO processors, modulators, demodulators, etc. described in the examples.

[0152] In some examples, the components for obtaining, receiving, outputting, sending, executing, and / or determining include the above in combination with Figure 2 Various processing system components of a network node are described, such as a receive processor, a transmit processor, a controller / processor, memory, or a combination thereof.

[0153] The communication manager 908 and / or the sending component 904 may send configuration information associated with mTRP operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of TCIs. In some aspects, the communication manager 908 may include in conjunction with Figure 2 One or more antennas, modems, controllers / processors, memories, or combinations thereof, of the network nodes described herein. In some aspects, the communications manager 908 may include a receiving component 902 and / or a sending component 904. In some aspects, the communications manager 908 may be, be similar to, or include Figure 1 and Figure 2 The communication manager 150 depicted in, or included in, the communication manager.

[0154] The communication manager 908 and / or the transmitting component 904 may transmit the RS based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS for an indicated TCI based on at least one CORESET in the plurality of CORESETs being associated with the indicated TCI, or a source RS for a non-indicated TCI in a plurality of TCIs based on each CORESET in the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET in the plurality of CORESETs. The communication manager 908 and / or the transmitting component 904 may transmit a communication indicating that the plurality of TCIs are associated with the TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control control element (MAC CE), or a downlink control information (DCI) transmission.

[0155] Figure 9 The number and arrangement of components shown in FIG are provided as examples. In practice, there may be Figure 9 Additional components, fewer components, different components, or components arranged differently than those shown in FIG. Figure 9 Two or more components shown in FIG may be implemented in a single component, or Figure 9 A single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 9 A set (one or more) of components shown in the example may be described as being executed by Figure 9 Another group of components shown in FIG.

[0156] The following provides an overview of some aspects of the disclosure:

[0157] Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of transmit configuration indicators (TCIs); and receiving an RS based on a selection rule of at least one beam failure determination (BFD) reference signal (RS) set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS of the indicated TCI based on at least one CORESET among the plurality of CORESETs being associated with the indicated TCI, or a source RS of a non-indicated TCI among the plurality of TCIs based on each CORESET among the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

[0158] Aspect 2: According to the method of aspect 1, the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

[0159] Aspect 3: According to the method of any one of claims 1 or 2, the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the multiple CORESETs based on the maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, and the at least one additional CORESET is associated with at least one additional TCI of the multiple TCIs that is different from the indicated TCI.

[0160] Aspect 4: The method according to aspect 3, wherein the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1.

[0161] Aspect 5: A method according to any one of Aspects 3 or 4, wherein based on the first CORESET having an even-numbered CORESET ID, the first CORESET is associated with the first BFD RS set in the at least one BFD RS set, and based on the second CORESET having an odd-numbered CORESET ID, the second CORESET is associated with the second BFD RS set in the at least one BFD RS set.

[0162] Aspect 6: The method of any one of aspects 1 to 5, wherein the selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each CORESET in the plurality of CORESETs.

[0163] Aspect 7: A method according to Aspect 6, wherein the first CORESET includes a first selected CORESET based on the selection order, and the first CORESET is associated with the first BFD RS set in the at least one BFD RS set, and the second CORESET includes a second selected CORESET based on the selection order, and the second CORESET is associated with the second BFD RS set in the at least one BFD RS set.

[0164] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the mTRP operation includes a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including the multiple CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional multiple CORESETs, and wherein the selection rule is applied to the first CORESET pool ID of the first BFD RS set in the at least one BFD RS set and the second CORESET pool ID of the second BFD RS set in the at least one BFD RS set.

[0165] Aspect 9: A method according to any one of Aspects 1 to 7, wherein the mTRP operation includes a single downlink control information (sDCI) mTRP operation, the configuration information indicates multiple TRP identifiers (IDs), wherein the multiple CORESETs are associated with a first TRP ID among the multiple TRP IDs, and an additional multiple CORESETs are associated with a second TRP ID among the multiple TRP IDs, and wherein the selection rule is applied to the first TRP ID of the first BFD RS set in the at least one BFD RS set and the second TRP ID of the second BFD RS set in the at least one BFD RS set.

[0166] Aspect 10: The method according to any one of aspects 1 to 9, wherein the multiple CORESETs are associated with the first BFD RS set based on the multiple TCIs associated with the multiple CORESETs being associated with a TRP corresponding to a first BFD RS set in the at least one BFD RS set.

[0167] Aspect 11: The method according to Aspect 10 further includes receiving a communication indicating that the multiple TCIs are associated with the TRP, the communication comprising at least one of a radio resource control message, a medium access control control element, or a downlink control information transmission.

[0168] Aspect 12: A method of wireless communication performed by a network node, the method comprising: sending configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information also including an indicated TCI among a plurality of transmit configuration indicators (TCIs); and sending an RS based on a selection rule of at least one beam failure determination (BFD) reference signal (RS) set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS of the indicated TCI based on at least one CORESET among the plurality of CORESETs being associated with the indicated TCI, or a source RS of a non-indicated TCI among the plurality of TCIs based on each CORESET among the plurality of CORESETs being associated with a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

[0169] Aspect 13: According to the method of aspect 12, the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

[0170] Aspect 14: According to the method of any one of claims 12 or 13, the selection rule also indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the multiple CORESETs based on the maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, and the at least one additional CORESET is associated with at least one additional TCI of the multiple TCIs that is different from the indicated TCI.

[0171] Aspect 15: The method according to aspect 14, wherein the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1.

[0172] Aspect 16: A method according to any one of Aspects 14 or 15, wherein based on the first CORESET having an even-numbered CORESET ID, the first CORESET is associated with a first BFD RS set in the at least one BFD RS set, and based on the second CORESET having an odd-numbered CORESET ID, the second CORESET is associated with a second BFD RS set in the at least one BFD RS set.

[0173] Aspect 17: The method of any one of aspects 12 to 16, wherein the selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each CORESET in the plurality of CORESETs.

[0174] Aspect 18: A method according to Aspect 17, wherein the first CORESET includes a first selected CORESET based on the selection order, and the first CORESET is associated with the first BFD RS set in the at least one BFD RS set, and the second CORESET includes a second selected CORESET based on the selection order, and the second CORESET is associated with the second BFD RS set in the at least one BFD RS set.

[0175] Aspect 19: A method according to any one of Aspects 12 to 18, wherein the mTRP operation includes a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including the multiple CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional multiple CORESETs, and wherein the selection rule is applied to the first CORESET pool ID of the first BFD RS set in the at least one BFD RS set and the second CORESET pool ID of the second BFD RS set in the at least one BFD RS set.

[0176] Aspect 20: A method according to any one of Aspects 12 to 18, wherein the mTRP operation includes a single downlink control information (sDCI) mTRP operation, the configuration information indicates a plurality of TRP identifiers (IDs), wherein the plurality of CORESETs are associated with a first TRP ID among the plurality of TRP IDs, and an additional plurality of CORESETs are associated with a second TRP ID among the plurality of TRPIDs, and wherein the selection rule is applied to the first TRP ID of the first BFD RS set in the at least one BFD RS set and the second TRPID of the second BFD RS set in the at least one BFD RS set.

[0177] Aspect 21: The method according to any one of aspects 12 to 20, wherein the multiple CORESETs are associated with the first BFD RS set based on the multiple TCIs associated with the multiple CORESETs being associated with a TRP corresponding to a first BFD RS set in the at least one BFD RS set.

[0178] Aspect 22: The method according to Aspect 21 further includes sending a communication indicating that the multiple TCIs are associated with the TRP, the communication including at least one of a radio resource control message, a medium access control control element, or a downlink control information transmission.

[0179] Aspect 23: An apparatus for wireless communication 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 11.

[0180] Aspect 24: A device for wireless communication, the device comprising a memory and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 11.

[0181] Aspect 25: 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 11.

[0182] Aspect 26: 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 11.

[0183] Aspect 27: 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 11.

[0184] Aspect 28: An apparatus for wireless communication 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 12 to 22.

[0185] Aspect 29: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 12 to 22.

[0186] Aspect 30: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 12 to 22.

[0187] Aspect 31: 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 12 to 22.

[0188] Aspect 32: 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 12 to 22.

[0189] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

[0190] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or 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, threads of execution, processes and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of different forms of hardware and / or hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, no reference is made herein to specific software code to describe the operation and behavior of the systems and / or methods, as those skilled in the art will appreciate that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0191] As used herein, "satisfying a threshold" may mean that a value is 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.

[0192] Although specific combinations of features are set forth 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 not specifically described in the claims and / or 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, a phrase referring to "at least one of" a list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b, or c" is intended to encompass a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination of multiple identical elements (e.g., 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 arrangement of a, b, and c).

[0193] 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 articles "one" and "a kind of" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more projects connected with the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "group" and "cluster" are intended to include one or more projects 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 "at least partially based on", unless explicitly stated otherwise. 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 explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A method of wireless communication performed by a user equipment (UE), the method comprising: receiving configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information further including an indicated one of a plurality of transmit configuration indicators (TCIs); as well as A beam failure determination (BFD) reference signal (RS) is received based on a selection rule for at least one BFD RS set, the selection rule indicating that the at least one BFD RS set includes at least one of: a source RS of the indicated TCI associated with the indicated TCI based on at least one CORESET of the plurality of CORESETs, or A source RS based on non-indicated TCIs among the plurality of TCIs associated with each CORESET among the plurality of CORESETs and a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

2. The method of claim 1 , wherein the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

3. The method of claim 1 , wherein the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the plurality of CORESETs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, the at least one additional CORESET being associated with at least one additional TCI of the plurality of TCIs that is different from the indicated TCI. 4 . The method according to claim 3 , wherein the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1.

5. The method of claim 3 , wherein the first CORESET is associated with a first BFD RS set in the at least one BFD RS set based on the first CORESET having an even-numbered CORESET ID, and the second CORESET is associated with a second BFD RS set in the at least one BFD RS set based on the second CORESET having an odd-numbered CORESET ID.

6. The method of claim 1 , wherein a selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each CORESET in the plurality of CORESETs.

7. The method of claim 6, wherein based on a first CORESET comprises a first selected CORESET based on the selection order, the first CORESET being associated with a first BFD RS set in the at least one BFD RS set, and based on a second CORESET comprises a second selected CORESET based on the selection order, the second CORESET being associated with a second BFD RS set in the at least one BFD RS set.

8. The method of claim 1 , wherein the mTRP operation comprises a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including the plurality of CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional plurality of CORESETs, and wherein the selection rule is applied to the first CORESET pool ID of a first BFD RS set in the at least one BFD RS set and the second CORESET pool ID of a second BFD RS set in the at least one BFD RS set.

9. The method of claim 1 , wherein the mTRP operation comprises a single downlink control information (sDCI) mTRP operation, the configuration information indicates a plurality of TRP identifiers (IDs), wherein the plurality of CORESETs are associated with a first TRP ID among the plurality of TRPIDs, and an additional plurality of CORESETs are associated with a second TRP ID among the plurality of TRP IDs, and wherein the selection rule is applied to the first TRPID of a first BFD RS set in the at least one BFD RS set and the second TRP ID of a second BFD RS set in the at least one BFD RS set.

10. The method of claim 1, wherein the plurality of CORESETs are associated with the first BFD RS set based on the plurality of TCIs associated with the plurality of CORESETs being associated with a TRP corresponding to a first BFD RS set of the at least one BFD RS set.

11. The method of claim 10, further comprising receiving a communication indicating that the plurality of TCIs are associated with the TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control element (MAC CE), or a downlink control information (DCI) transmission.

12. A method of wireless communication performed by a network node, the method comprising: transmitting configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information further including an indicated one of a plurality of transmit configuration indicators (TCIs); as well as The RS is transmitted based on a selection rule of at least one beam failure determination (BFD) reference signal (RS) set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS of the indicated TCI associated with the indicated TCI based on at least one CORESET of the plurality of CORESETs, or A source RS based on non-indicated TCIs among the plurality of TCIs associated with each CORESET among the plurality of CORESETs and a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

13. The method of claim 12, wherein the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

14. The method of claim 12, wherein the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the plurality of CORESETs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, the at least one additional CORESET being associated with at least one additional TCI of the plurality of TCIs that is different from the indicated TCI. The method according to claim 14 , wherein the number of source RSs in the at least one additional source RS is less than or equal to the maximum number value minus 1.

16. The method of claim 14 , wherein based on the first CORESET having an even-numbered CORESET ID, the first CORESET is associated with a first BFD RS set in the at least one BFD RS set, and based on the second CORESET having an odd-numbered CORESET ID, the second CORESET is associated with a second BFD RS set in the at least one BFD RS set.

17. The method of claim 12, wherein a selection order associated with the plurality of CORESETs is based on at least one of a synchronization set monitoring periodicity or a CORESET identifier (ID) associated with each CORESET in the plurality of CORESETs.

18. The method of claim 17, wherein based on a first CORESET comprises a first selected CORESET based on the selection order, the first CORESET being associated with a first BFD RS set in the at least one BFD RS set, and based on a second CORESET comprises a second selected CORESET based on the selection order, the second CORESET being associated with a second BFD RS set in the at least one BFD RS set.

19. The method of claim 12, wherein the mTRP operation comprises a multi-downlink control information (mDCI) mTRP operation, the configuration information indicates a CORESET pool having a first control resource set (CORESET) pool identifier (ID) and including the plurality of CORESETs and an additional CORESET pool having a second CORESET pool ID and including an additional plurality of CORESETs, and wherein the selection rule is applied to the first CORESET pool ID of a first BFD RS set in the at least one BFD RS set and the second CORESET pool ID of a second BFD RS set in the at least one BFD RS set.

20. The method of claim 12, wherein the mTRP operation comprises a single downlink control information (sDCI) mTRP operation, the configuration information indicates a plurality of TRP identifiers (IDs), wherein the plurality of CORESETs are associated with a first TRP ID among the plurality of TRPIDs, and an additional plurality of CORESETs are associated with a second TRP ID among the plurality of TRP IDs, and wherein the selection rule is applied to the first TRP ID of a first BFD RS set in the at least one BFD RS set and the second TRPID of a second BFD RS set in the at least one BFD RS set.

21. The method of claim 12, wherein the plurality of CORESETs are associated with the first BFD RS set based on the plurality of TCIs associated with the plurality of CORESETs being associated with a TRP corresponding to a first BFD RS set of the at least one BFD RS set.

22. The method of claim 21, further comprising sending a communication indicating that the plurality of TCIs are associated with the TRP, the communication comprising at least one of a radio resource control (RRC) message, a medium access control element (MAC CE), or a downlink control information (DCI) transmission.

23. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; transceiver; and one or more processors coupled to the memory and the transceiver and configured to cause the UE to: receiving, via the transceiver, configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information further including an indicated one of a plurality of transmit configuration indicators (TCIs); and Receiving, via the transceiver, at least one beam failure determination (BFD) reference signal (RS) set based on a selection rule of the RS, the selection rule indicating that the at least one BFD RS set includes at least one of: a source RS of the indicated TCI associated with the indicated TCI based on at least one CORESET of the plurality of CORESETs, or A source RS based on non-indicated TCIs among the plurality of TCIs associated with each CORESET among the plurality of CORESETs and a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

24. The UE of claim 23, wherein the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

25. The UE of claim 23, wherein the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the plurality of CORESETs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, the at least one additional CORESET being associated with at least one additional TCI of the plurality of TCIs that is different from the indicated TCI.

26. The UE of claim 23, wherein the mTRP operation comprises a single downlink control information (sDCI) mTRP operation, the configuration information indicates a plurality of TRP identifiers (IDs), wherein the plurality of CORESETs are associated with a first TRP ID among the plurality of TRPIDs, and an additional plurality of CORESETs are associated with a second TRP ID among the plurality of TRP IDs, and wherein the selection rule is applied to the first TRPID of a first BFD RS set in the at least one BFD RS set and the second TRP ID of a second BFD RS set in the at least one BFD RS set.

27. The UE of claim 23, wherein the plurality of CORESETs are associated with the first BFD RS set based on the plurality of TCIs associated with the plurality of CORESETs being associated with a TRP corresponding to a first BFD RS set of the at least one BFD RS set.

28. A network node for wireless communication, the network node comprising: Memory; transceiver; and one or more processors coupled to the memory and the transceiver and configured to cause the network node to: transmitting configuration information associated with a multiple transmit receive point (mTRP) operation, the configuration information indicating a plurality of CORESETs, and the configuration information further including an indicated one of a plurality of transmit configuration indicators (TCIs); as well as The RS is transmitted based on a selection rule of at least one beam failure determination (BFD) reference signal (RS) set, the selection rule indicating that the at least one BFD RS set includes at least one of the following: a source RS of the indicated TCI associated with the indicated TCI based on at least one CORESET of the plurality of CORESETs, or A source RS based on non-indicated TCIs among the plurality of TCIs associated with each CORESET among the plurality of CORESETs and a corresponding TCI other than the indicated TCI, wherein the non-indicated TCI is associated with at least one CORESET among the plurality of CORESETs.

29. The network node of claim 28, wherein the selection rule further indicates that the at least one BFD RS set includes the source RS of the non-indicated TCI based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value of 1.

30. The network node of claim 28, wherein the selection rule further indicates that the at least one BFD RS set includes at least one additional source RS associated with at least one additional CORESET of the plurality of CORESETs based on a maximum number of RSs associated with the at least one BFD RS set having a maximum number value greater than 1, the at least one additional CORESET being associated with at least one additional TCI of the plurality of TCIs that is different from the indicated TCI.

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