Channel state information configuration for joint transmission from multiple transmitting and receiving points

Abstract

Wireless communication methods, systems, and devices are described that support configuration of channel measurement resources (CMRs) for channel state information (CSI) reporting of coherent joint transmissions (CJTs) via multiple transmit / receive points (TRPs). A user equipment (UE) may transmit an indication of the UE's capability to support CMR, including two or more CSI-RS resources for CJT CSI reporting for the multiple TRPs, to a network entity. Based on the UE's indicated capability, the network entity may transmit control signaling indicating the CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for the multiple TRPs. Based on the CMR configuration, the UE may transmit CJT CSI reports for the multiple TRPs to the network entity, where the CJT CSI reporting may be determined based on the CMR configuration.

Description

[Technical Field]

[0001] The following relates to wireless communications, including channel state information (CSI) construction for joint transmissions from multiple transmission-reception points (TRPs). [Background technology]

[0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcasts, etc. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth-generation (4G) systems, such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth-generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM), etc. A wireless multiple-access communication system may include one or more base stations that each support wireless communication for communication devices, sometimes known as user equipment (UE).

[0003] In some cases, a UE may communicate with one or more transmission / reception points (TRPs), each of which may be a respective instance of or part of a network entity. In some cases, multiple TRPs may coordinate transmissions to the UE. Summary of the Invention

[0004] The described techniques relate to an improved method, system, device, or apparatus that supports channel state information (CSI) configuration for joint transmissions from multiple transmit / receive points (TRPs). For example, the described techniques provide for configuring channel measurement resources (CMRs) (e.g., for CSI reporting) for coherent joint transmissions (CJTs) over multiple TRPs. For example, to support configuration of a CMR for a CJT over multiple TRPs (e.g., for CSI reporting for a CJT over multiple TRPs), a user equipment (UE) may transmit an indication of the UE's capability to support a CMR that includes two or more CSI-RS resources for CJT CSI reporting for the multiple TRPs to a network entity (e.g., a TRP, another network entity).

[0005] Based on the UE's indicated capabilities, a network entity (e.g., a TRP or another network entity) may determine a CMR configuration of CJT for the UE. The network entity may send control signaling to the UE indicating the CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the CMR configuration, the UE may receive one or more CSI-RSs from one or more TRPs and measure resources associated with the one or more CSI-RSs. Based on the one or more measurements made by the UE, the UE may send a CJT CSI report for multiple TRPs to a network entity (e.g., a TRP, another network entity), where the CJT CSI report may be determined based on the CMR configuration. Based on the CSI report from the UE, the multiple TRPs may perform CJT to send one or more messages to the UE.

[0006] A method of wireless communication in a UE is described that may include: sending to a network entity an indication of a UE capability of supporting a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs; receiving from the network entity control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability of supporting the CMR including the two or more CSI-RS resources; and sending to the network entity a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0007] An apparatus for wireless communications is described, which may include a memory, a transceiver, and at least one processor of a UE coupled to the memory and the transceiver, wherein the at least one processor is configured to: cause the apparatus to transmit, to a network entity, an indication of a capability of the UE to support a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs; receive, from the network entity, control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability to support the CMR including the two or more CSI-RS resources; and cause the apparatus to transmit, to the network entity, a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0008] Another apparatus for wireless communication in a UE is described, which may include: means for transmitting to a network entity an indication of a UE capability of supporting a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs; means for receiving from the network entity control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability of supporting the CMR including the two or more CSI-RS resources; and means for transmitting to the network entity a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0009] A non-transitory computer-readable medium storing code for wireless communication in a UE is described, wherein the code may include instructions executable by a processor to: send an indication of a UE capability of supporting a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs to a network entity; receive from the network entity control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability of supporting a CMR including the two or more CSI-RS resources; and send to the network entity a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving control signaling indicating a CMR configuration may include an act, feature, means, or instruction of receiving control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving control signaling indicating a CMR configuration may include an act, feature, means, or instruction of receiving control signaling indicating a CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs of the plurality of TRPs, where each CSI-RS resource is associated with a set of ports that corresponds to the group of two or more TRPs.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving control signaling indicating a CMR configuration may include acts, features, means, or instructions for receiving control signaling indicating a CMR configuration that identifies a second respective CSI-RS resource of a set of CSI-RS resources associated with a TRP of the plurality of TRPs, where each CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports may be associated with a first quantity of ports, and where the second set of ports may be associated with a second quantity of ports that is different from the first quantity of ports.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving control signaling indicating a CMR configuration may include an act, feature, means, or instruction of receiving control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, where the time resources are associated with one communication direction.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting a CJT channel measurement report may include an operation, feature, means, or instruction for transmitting, in a discontinuous reception mode, a CJT channel measurement report, wherein the CJT channel measurement report is transmitted based on receiving each CSI-RS resource from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0015] In some examples of the methods, devices, and non-transitory computer-readable media described herein, transmitting a CJT channel measurement report may include an operation, feature, means, or instruction for transmitting, in a discontinuous reception mode, a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT, where the CJT channel measurement report for the hypothesis may be transmitted based on receiving each CSI-RS resource that may be associated with the hypothesis from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may include an operation, feature, means, or instruction to refrain from transmitting a second CJT channel measurement report associated with a second hypothesis used to select a TRP among multiple TRPs for CJT based on the UE's failure to receive at least one CSI-RS resource associated with the second hypothesis from the set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0017] A method of wireless communication in a network entity is described that may include receiving an indication of a UE capability of supporting a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs, transmitting control signaling indicating a CMR configuration for the UE that identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability of supporting the CMR including the two or more CSI-RS resources, and receiving a CJT channel measurement report based on the CMR configuration of the set of CSI-RS resources.

[0018] An apparatus for wireless communications is described, which may include a memory and at least one processor of a network entity coupled to the memory. The at least one processor is configured to receive an indication of a capability of a UE to support a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs, transmit control signaling for the UE indicating a CMR configuration that identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability to support the CMR including the two or more CSI-RS resources, and receive a CJT channel measurement report based on the CMR configuration of the set of CSI-RS resources.

[0019] Another apparatus for wireless communication in a network entity is described, which may include means for receiving an indication of a UE capability of supporting a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs, means for transmitting, for the UE, control signaling indicating a CMR configuration that identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability of supporting the CMR including the two or more CSI-RS resources, and means for receiving a CJT channel measurement report based on the CMR configuration of the set of CSI-RS resources.

[0020] A non-transitory computer-readable medium storing code for wireless communication in a network entity is described, wherein the code may include instructions executable by a processor to receive an indication of a capability of a UE to support a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs, transmit control signaling indicating a CMR configuration for the UE that identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based on the UE's capability to support a CMR including the two or more CSI-RS resources, and receive a CJT channel measurement report based on the CMR configuration of the set of CSI-RS resources.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting control signaling indicating a CMR configuration may include an act, feature, means, or instruction of transmitting control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting control signaling indicating the CMR configuration may include an act, feature, means, or instruction of transmitting control signaling indicating the CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs of the plurality of TRPs, where each CSI-RS resource is associated with a set of ports corresponding to the two or more TRPs.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting control signaling indicating the CMR configuration may include an act, feature, means, or instruction of transmitting control signaling indicating the CMR configuration that identifies a second respective CSI-RS resource of the set of CSI-RS resources associated with a TRP of the plurality of TRPs, where each CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports may be associated with a first quantity of ports, and where the second set of ports may be associated with a second quantity of ports that is different from the first quantity of ports.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting control signaling indicating a CMR configuration may include an act, feature, means, or instruction of transmitting control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, where the time resources are associated with one communication direction.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a CJT channel measurement report in an discontinuous reception mode, wherein the CJT channel measurement report is received based on transmitting each CSI-RS resource from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0026] In some examples of the methods, devices, and non-transitory computer-readable media described herein, receiving a CJT channel measurement report may include an operation, feature, means, or instruction for receiving a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT, where the CJT channel measurement report may be received based on the UE receiving at least one CSI-RS for each CSI-RS resource that may be associated with the hypothesis from a set of CSI-RS resources within the same active time of the UE's discontinuous reception mode.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the hypothesis may be other than the second hypothesis in which the UE is unable to receive at least one CSI-RS resource that may be associated with the second hypothesis from the set of CSI-RS resources within the same active time in the discontinuous reception mode. [Brief explanation of the drawings]

[0028] [Figure 1] 1 illustrates an example of a wireless communication system that supports channel state information (CSI) configuration for joint transmissions from multiple transmit / receive points (TRPs), in accordance with one or more aspects of the present disclosure. [Figure 2A] 1 illustrates an example of a transmission scheme supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 2B] 1 illustrates an example of a transmission scheme supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 3] 1 illustrates an example of a resource scheme that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 4] 1 illustrates an example of a wireless communication system that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 5]1 illustrates an example of a resource scheme that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 6] 1 illustrates an example process flow for supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 7] FIG. 1 illustrates a block diagram of a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 8] FIG. 1 illustrates a block diagram of a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 9] FIG. 1 illustrates a block diagram of a communications manager supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 10] FIG. 1 illustrates a diagram of a system including a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 11] FIG. 1 illustrates a block diagram of a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 12] FIG. 1 illustrates a block diagram of a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 13] FIG. 1 illustrates a block diagram of a communications manager supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 14] FIG. 1 illustrates a diagram of a system including a device that supports CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 15] 10 illustrates a flowchart illustrating a method for supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 16]10 illustrates a flowchart illustrating a method for supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 17] 10 illustrates a flowchart illustrating a method for supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. [Figure 18] 10 illustrates a flowchart illustrating a method for supporting CSI configuration for joint transmissions from multiple TRPs, in accordance with one or more aspects of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0029] A user equipment (UE) may communicate with one or more transmit / receive points (TRPs) in the uplink, downlink, or both. In some cases, the one or more TRPs may include multiple TRPs that may communicate together (e.g., simultaneously) with the UE. For example, multiple TRPs may transmit joint downlink information to the UE, such as via coherent joint transmission (CJT). The CJT from a TRP may be based on or associated with channel state information (CSI) feedback reported by the UE, for example, based on one or more channel measurement resources (CMRs) and / or CSI configurations. Based on the CSI and / or CMR configurations, the UE may determine the quantity of computational resources associated with performing CSI measurements and / or reporting (e.g., the number of CSI reference signal (CSI-RS) resources or ports for measuring CSI-RS). However, in some cases, a CMR may not be configured for CJT over multiple TRPs (e.g., it may support other transmissions but may not be configured to support CJT over multiple TRPs).

[0030] The present disclosure provides techniques for configuring a CMR (e.g., for CSI reporting) of a CJT via multiple TRPs. For example, to support configuring a CMR (e.g., for CSI reporting of a CJT via multiple TRPs), a UE may report the capability to support two or more CSI-RS resources within a CMR (e.g., within a CSI-RS resource set). In some cases, CSI-RS resources associated with different respective quantities of ports may be configured within a resource set of the CJT. For example, two or more TRPs may be included in a resource group (e.g., a TRP group) associated with one or more respective CSI-RS resources, and the CSI-RS resource(s) are associated with a set of ports corresponding to the ports of the TRPs of the group.

[0031] The UE may send an indication of the UE's capability to support CMR, which includes two or more CSI-RS resources for CJT CSI reporting for multiple TRPs, to a network entity (e.g., a TRP, another network entity). Based on the UE's indicated capability, the network entity (e.g., a TRP or another network entity) may determine a CJT CMR configuration for the UE. The network entity may send control signaling to the UE indicating the CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs.

[0032] Based on the CMR configuration, the UE may receive one or more CSI-RS from one or more TRPs and measure resources associated with the one or more CSI-RS. Based on the one or more measurements made by the UE, the UE may send CJT CSI reports for the multiple TRPs to a network entity (e.g., a TRP, another network entity), where the CJT CSI reports may be determined based on the CMR configuration. Based on the CSI reports from the UE, the multiple TRPs may perform CJT to send one or more messages to the UE.

[0033] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are further illustrated by and described with reference to transmission schemes, resource schemes, process flows, apparatus diagrams, system diagrams, and flowcharts related to CSI configuration for joint transmissions from multiple TRPs.

[0034] 1 illustrates an example of a wireless communication system 100 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a network operating in accordance with a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0035] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices of different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other nomenclature. In some examples, the network entities 105 and the UEs 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, each network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entities 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the network entities 105 and the UEs 115 may support communication of signals via one or more radio access technologies (RATs).

[0036] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both at different times. The UEs 115 may be devices of different types or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of supporting communication with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.

[0037] As described herein, a node of the wireless communication system 100, which may be referred to as a network node or a wireless node, may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another appropriate processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a network entity 105, the second node may be a network entity 105, and the third node may be a UE 115. In still other aspects of this example, the first node, the second node, and the third node may vary relative to these examples. Similarly, references to a UE 115, a network entity 105, an apparatus, a device, a computing system, etc. may include disclosure of the UE 115, the network entity 105, the apparatus, the device, the computing system, etc. as being nodes. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.

[0038] In some examples, the network entities 105 may communicate with the core network 130, with each other, or with both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to an S1, N2, N3, or other interface protocol). In some examples, the network entities 105 may communicate with each other either via the backhaul communication links 120 (e.g., according to an X2, Xn, or other interface protocol), directly (e.g., directly between the network entities 105), or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via midhaul communication links 162 (e.g., according to a midhaul interface protocol) or fronthaul communication links 168 (e.g., according to a fronthaul interface protocol), or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include, among other examples or various combinations thereof, one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links). The UE 115 may communicate with the core network 130 via the communication link 155.

[0039] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., base transceiver station, radio base station, NR base station, access point, radio transceiver, NodeB, eNodeB (eNB), Next Generation NodeB or Giga NodeB (any of which may be referred to as gNB), 5G NB, Next Generation eNB (ng-eNB), Home NodeB, Home eNodeB, or other suitable terminology). In some examples, the network entities 105 (e.g., base stations 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize protocol stacks that are physically or logically integrated within a single network entity 105 (e.g., a single RAN node such as base station 140).

[0040] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., disaggregated base station architecture, disaggregated RAN architecture), which may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., Cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near-real time RIC, a non-real time RIC), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit / receive point (TRP). One or more components of the network entity 105 in a disaggregated RAN architecture may be collocated, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a disaggregated RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0041] The division of functions among the CU 160, the DU 165, and the RU 170 is flexible and may support different functions depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are executed in the CU 160, the DU 165, or the RU 170. For example, a functional division of a protocol stack may be adopted between the CU 160 and the DU 165 such that the CU 160 can support one or more layers of the protocol stack and the DU 165 can support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functions and signaling (e.g., Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, which may host lower protocol layers such as Layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functions and signaling, each of which may be at least partially controlled by the CU 160. Additionally or alternatively, a functional division of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 can support one or more layers of the protocol stack, and the RU 170 can support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional division between the CU 160 and the DU 165, or between the DU 165 and the RU 170, may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of the CU 160, the DU 165, or the RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170). The CU 160 may be further functionally divided into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions.The CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and the DUs 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interfaces). In some examples, the midhaul communication links 162 or the fronthaul communication links 168 may be implemented in accordance with interfaces (e.g., channels) between layers of protocol stacks supported by the respective network entities 105 communicating via such communication links.

[0042] In a wireless communication system (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access can supplement wired backhaul connections to support wireless backhaul link capabilities and provide an IAB network architecture (e.g., to the core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with the donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) can communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access links and backhaul links (e.g., backhaul communication links 120). An IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by the DU 165 of the associated IAB donor. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antenna (e.g., of the RU 170) of the IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (VIaB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., the IAB node 104, the UE 115) in an access network (e.g., downstream) relay chain or configuration. In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate in accordance with the techniques described herein.

[0043] For the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support CSI configuration for joint transmissions from multiple TRPs as described herein. For example, some operations described as being performed by the UE 115 or a network entity 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the disaggregated RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, an RU 170, a RIC 175, an SMO 180).

[0044] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, and a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, the UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various items such as an appliance, a vehicle, a meter, or the like.

[0045] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may act as relays, as shown in FIG. 1, as well as network entities 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among various examples.

[0046] The UE 115 and the network entity 105 may wirelessly communicate with each other over one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier used for the communication link 125 may include a portion (e.g., a bandwidth part (BWP)) of an RF spectrum band operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating operation on the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and another device may refer to communication between a device and any portion (e.g., entity, sub-entity) of the network entity 105. For example, when referring to a network entity 105, the terms "transmit," "receive," or "communicate" may refer to any portion of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN that communicates with another device (e.g., directly or via one or more other network entities 105).

[0047] A signal waveform transmitted over a carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing may be inversely proportional. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), such that a relatively large number of resource elements (e.g., during a transmission duration) and a relatively high order of the modulation scheme may correspond to a relatively higher communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may further increase data rates or data integrity for communications with UE 115.

[0048] The time interval for the network entity 105 or the UE 115 is, for example, T s =1 / (Δf max N f ) seconds, where Δf max may represent the supported subcarrier spacing, and N f may represent the supported discrete Fourier transform (DFT) sizes. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0049] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a certain number of slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include a certain number of symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency band of operation.

[0050] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., among bursts of shortened TTIs (sTTIs)).

[0051] Physical channels may be multiplexed for communication using carriers according to various techniques. Physical control channels and physical data channels may be multiplexed for signaling over downlink carriers using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a set of symbol periods and may span the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0052] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus may provide communication coverage for moving coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include a heterogeneous network, for example, where different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0053] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception, but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating using a limited bandwidth (e.g., pursuant to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0054] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC). The UE 115 may be designed to support ultra-reliable, low-latency, or critical functionality. Ultra-reliable communications may include private or group communications and may be supported by one or more services such as push-to-talk, video, data, etc. Support for ultra-reliable, low-latency functionality may include service prioritization, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0055] In some examples, the UEs 115 may be configured to support direct communication with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 of a group performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170), which may support aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of the network entity 105, or in some cases, may not be able to or configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, with each UE 115 transmitting to every other UE 115 in the group. In some examples, the network entity 105 may facilitate scheduling of resources for D2D communication. In some other examples, D2D communication may be performed between UEs 115 without the involvement of the network entity 105.

[0056] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5G core, 5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (PDN gateway (P-GW), or a user plane function (UPF)) that routes packets or interconnects to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be forwarded through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may connect to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, intranet(s), IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0057] The wireless communication system 100 may operate using one or more frequency bands, which may range from 300 megahertz (MHz) to 300 gigahertz (GHz). The 300 MHz to 3 GHz region is commonly known as the ultra-high frequency (UHF) region or decimeter band because wavelengths range in length from approximately 1 decimeter to 1 meter. Although UHF waves may be blocked or redirected by buildings and environmental features, sometimes referred to as clusters, the waves can penetrate structures sufficiently for a macrocell to provide service to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to communications using lower frequencies and longer waves in the shortwave (high frequency (HF)) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0058] The wireless communication system 100 may use both licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may utilize License Assisted Access (LAA), LTE-Unlicensed (LTE-U) radio access technology, or NR technology using unlicensed bands, such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entity 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using licensed bands (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0059] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels that can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be collocated in an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with the network entity 105 may be located at various geographic locations. The network entity 105 may include an antenna array having a set of rows and columns of antenna ports that the network entity 105 can use to support beamforming of communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted through the antenna ports.

[0060] The network entity 105 or the UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques are sometimes referred to as spatial multiplexing. Multiple signals may be transmitted by a transmitting device, for example, via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0061] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjusting signals communicated through antenna elements may include the transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals carried through the antenna elements associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device, or to some other orientation).

[0062] The wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly for communications over logical channels. The MAC layer may perform priority handling and multiplexing of logical channels onto transport channels. The MAC layer may also implement error detection, error correction, or both to support retransmissions and improve link efficiency. In the control plane, the RRC layer may provide establishment, configuration, and maintenance of the RR connection between the UE 115 and the network entity 105 or the core network 130 supporting radio bearers for user plane data. The PHY layer may map transport channels to physical channels.

[0063] The UE 115 may send an indication of the UE 115's capability to support CMR, which includes two or more CSI-RS resources for CJT CSI reporting for multiple TRPs, to a network entity (e.g., a TRP, another network entity). Based on the UE 115's indicated capability, the network entity 105 (e.g., a TRP or another network entity 105) may determine a CJT CMR configuration for the UE 115. The network entity 105 may send control signaling to the UE 115 indicating the CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for the multiple TRPs. Based on the CMR configuration, the UE 115 may receive one or more CSI-RSs from one or more TRPs and measure resources associated with the one or more CSI-RSs. Based on one or more measurements made by the UE 115, the UE 115 may send CJT CSI reports for multiple TRPs to a network entity 105 (e.g., a TRP, another network entity 105), and the CJT CSI reports may be determined based on a CMR configuration. Based on the CSI reports from the UE 115, the multiple TRPs may perform CJT to send one or more messages to the UE 115.

[0064] 2A and 2B illustrate example transmission schemes 200-a and 200-b supporting CSI configuration for joint transmissions from multiple TRPs according to one or more aspects of the present disclosure. Transmission schemes 200-a and 200-b may embody or be implemented by one or more aspects of wireless communication system 100. For example, transmission schemes 200-a and 200-b may be implemented by two or more TRPs (e.g., two or more network entities 105, portions thereof) and UEs 115-a and 115-b. These devices may be examples of the corresponding devices described with reference to FIG. 1. Transmission schemes 200-a and 200-b may represent one or more schemes for joint transmissions from multiple TRPs to respective UEs 115 (e.g., UEs 115-a, 115-b). While the examples illustrated by FIGS. 2A and 2B and described herein may be associated with two TRPs, the same examples may be extended to any number of multiple TRPs. For example, in some cases, the examples herein may apply to any number of TRPs up to four TRPs (e.g., or another number of TRPs).

[0065] In some cases, as shown by FIG. 2A, the TRPs may perform noncoherent joint transmissions to the UE 115-a. In such cases, data (e.g., data X) to be transmitted to the UE 115-a may be separately precoded by two or more TRPs, such as TRP A and TRP B. Each TRP may be associated with a respective number of ports 205 (e.g., four ports 205) and may each use one or more different respective layers for transmission. For example, a first layer may be used for transmissions from TRP A, and two other layers may be used for transmissions from TRP B (e.g., a total of three layers for transmissions to the UE 115-a). Such transmissions may be, for example, spatial division multiplexing (SDM)-based, based on using different spatial layers for transmission.

[0066] Each TRP may also be associated with a respective precoder for the data transmitted by the TRP. For example, TRP A may be associated with precoder V A Using Data X A Similarly, TRP B precodes V, and the data can be associated with one spatial layer. B Using Data X B and the data may be associated with two spatial layers. The precoders and spatial layers may be configured for joint transmission from TRP A and B. After precoding (e.g., separately precoding) their respective data, TRP A and TRP B may transmit (e.g., simultaneously transmit) the precoded data to UE 115-a via respective ports 205 (e.g., port 205-a and port 205-b) of the TRPs. The precoding of the data transmitted by TRP A and B may be represented by an equation such as equation (1).

[0067]

number

[0068] In some cases, as shown by FIG. 2B, a TRP may perform CJT for UE 115-b. In such a case, data (e.g., data X) to transmit to UE 115-b may be jointly precoded by two or more TRPs, such as TRP A and TRP B, and the joint precoding may support phase coherence of the joint transmission. Each TRP may be associated with a respective number of ports 205 (e.g., four ports 205) and may each use one or more of the same layers for transmission. For example, two layers may be used for transmission from TRP A and the same two layers may be used for transmission from TRP B (e.g., a total of two layers for transmission to UE 115-b).

[0069] For CJT, each TRP may be associated with a respective precoder that jointly precodes the data transmitted by the TRP. For example, TRP A may be associated with precoder V A The data X may be precoded using the precoder V. Similarly, the TRP B may be precoded using the precoder V. B The same data X may be precoded using a precoder V, such that the data is associated with two spatial layers. A and V B can be based on or use a joint codebook (e.g., using the same or similar precoders, such as using joint spatial dimensions, joint frequency dimensions, or both), or can be based on or use separate codebooks (e.g., semi-separate codebooks, such as separate for the spatial dimension, the frequency dimension, or both). The precoders and spatial layers may be configured for CJT from TRP A and B. After precoding (e.g., jointly precoding) the data, TRP A and TRP B may transmit (e.g., transmit simultaneously, transmit coherently) the precoded data to UE 115-b via their respective ports 205. The precoding of the data transmitted by TRP A and B may be represented by an equation such as Equation (2).

[0070]

number

[0071] In some cases, a CJT from multiple TRPs may support a greater number of ports 205 for the CJT in some frequency bands (e.g., lower frequency bands), and the number of ports 205 may be associated with distributed TRPs and / or panels. For example, a single TRP and / or panel with a greater number of ports 205 (e.g., 32 ports 205) may have an antenna array size that may be too large for practical deployment. Therefore, distributed TRPs and / or panels with smaller antenna array sizes in association with the CJT may be used to communicate with UEs 115.

[0072] In some cases, a CJT implementation may be implemented for up to a certain number of TRPs (e.g., four TRPs) within a defined frequency range (e.g., Frequency Range 1 (FR1)). CJT transmission may be associated with backhaul connectivity and synchronization across the multiple TRPs and the same or similar number of antenna ports 205 across the multiple TRPs (e.g., per TRP). To perform CJT communication across the multiple TRPs, the multiple TRPs may perform one or more CSI reporting techniques with the UE 115 (e.g., UE 115-b). CSI reporting may be associated with configured CSI-RS resources, which may be associated with a certain number of ports 205 per resource (e.g., 32 ports 205).

[0073] The UE 115 may send an indication of its capability to support CMR, which includes two or more CSI-RS resources for CJT CSI reporting for multiple TRPs, to a network entity 105 (e.g., a TRP, another network entity 105). Based on the UE 115's indicated capability, the network entity 105 (e.g., a TRP or another network entity 105) may determine a CJT CMR configuration for the UE 115. The network entity 105 may send control signaling to the UE 115 indicating the CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for the multiple TRPs. Based on the CMR configuration, the UE 115 may receive one or more CSI-RSs from one or more TRPs and measure resources associated with the one or more CSI-RSs. Based on one or more measurements made by the UE 115, the UE 115 may send CJT CSI reports for multiple TRPs to a network entity 105 (e.g., a TRP, another network entity 105), and the CJT CSI reports may be determined based on a CMR configuration. Based on the CSI reports from the UE 115, the multiple TRPs may perform CJT to send one or more messages to the UE 115.

[0074] FIG. 3 illustrates an example resource scheme 300 supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The resource scheme 300 may implement or be implemented by one or more aspects of the wireless communication system 100 or transmission schemes 200-a and 200-b. For example, the resource scheme 300 may be implemented by two or more TRPs (e.g., two or more network entities 105, portions thereof) and the UE 115. These devices may be examples of the corresponding devices described with reference to FIGS. 1-2B. The resource scheme 300 may represent a CSI-RS resource configuration associated with a joint transmission (e.g., CJT) from two or more TRPs to the UE 115 (e.g., the UE 115-a, the UE 115-b). While the example illustrated by FIG. 3 and described herein may be associated with two TRPs, the same example may be extended to any number of multiple TRPs. For example, in some cases, the examples herein may apply to any number of TRPs up to four TRPs (e.g., or another number of TRPs).

[0075] In some cases, the UE 115, one or more of the TRPs, or both, may configure one or more hypotheses for joint transmission. For example, each of the one or more hypotheses may be associated with a respective number of TRPs to be used for joint transmission (e.g., CJT) and which TRPs should be used for joint transmission. A CSI report (e.g., a CSI and / or CMR configuration) may be configured using one or more single-TRP hypotheses, one or more multi-TRP hypotheses, or both. In the case of a multi-TRP hypothesis, the UE 115 may report two precoding matrix indicators (PMIs), two rank indicators (RIs), and one channel quality indicator (CQI). In some cases, one or more hypotheses may be applicable to a Type I codebook (e.g., a single-panel codebook).

[0076] The resource method 300 may be implemented as follows: sA CSI-RS resource set 305 (e.g., K1 resources) may be shown, which may include a first CSI-RS resource group 310-a (e.g., K1 resources) configured for TRP 1 and a second CSI-RS resource group 310-b (e.g., K2 resources) configured for TRP 2. Each resource in the CSI-RS resource group 310 may be referred to as a channel measurement resource (CMR) and may be associated with a single-TRP or multi-TRP transmission scenario, or both hypotheses.

[0077] Within a CSI-RS resource set 305 configured with single-TRP and multi-TRP hypotheses, two CSI-RS resource groups 310 (e.g., CMR groups) may be configured, corresponding to two TRPs (e.g., TRP 1 and TRP 2). Up to N paired (e.g., N equals 1 or 2) CMRs may be configured for multi-TRP hypotheses. In the example shown in FIG. 3, two paired (e.g., N=2) CMRs may be configured. A total of M single-TRP hypotheses (e.g., CMRs) may be configured for a TRP (e.g., two TRPs), where M may be equal to the sum of M1 hypotheses associated with TRP 1 (e.g., M1 CMR) and M2 hypotheses associated with TRP 2 (e.g., M2 CMR). Depending on how the resources are configured, the M hypotheses may or may not include 2N paired CMRs.

[0078] The UE 115 may report single-TRP and multi-TRP hypotheses using a CSI-RS resource indicator (CRI). In a first mode (e.g., mode 1), the UE 115 may report one multi-TRP CSI hypothesis (e.g., a determined best hypothesis) and a quantity (e.g., X) of single-TRP hypotheses (e.g., a determined best hypothesis). The quantity (e.g., X) of single-TRP hypotheses may be configurable (e.g., to a value of 0, 1, or 2) via RRC. If the quantity of single-TRP hypotheses is equal to two (e.g., X=2), the first reported single-TRP hypothesis may be associated with a first CMR group (e.g., CSI-RS resource group 310-a), and the second reported single-TRP hypothesis may be associated with a second CMR group (e.g., CSI-RS resource group 310-b). In a second mode (eg, mode 2), the UE 115 may report one CSI out of all configured CSI hypotheses (eg, out of all M+N hypotheses).

[0079] The number of bits used for CRI reporting in Mode 1 (e.g., reported in CSI Part 1) may be based on the number of single TRP hypotheses (e.g., X). For example, if X=0, one CRI may be used for reporting, and the CRI may be

[0080]

number

[0081]

number

[0082]

number

[0083]

number

[0084]

number

[0085]

number

[0086]

number

[0087] One or more of the example hypotheses described herein may apply to non-coherent joint transmission, which may be associated with a Type I codebook. One or more other example hypotheses may also be configured for or applied to CJT, which may be associated with a Type II codebook. In some cases, for a CJT CMR configuration, one CSI-RS resource may be configured per CMR, and the CMR may be associated with a maximum number of ports (e.g., 32 ports). In some other cases, for a CJT CMR configuration, two or more CSI-RS resources (e.g., K resources) may be configured per CMR, and each CMR may be associated with the same number of ports (e.g., representing K TRPs).

[0088] In a CJT CMR configuration, a certain number of TRPs (e.g., N TRPs) can cooperate for PMI reporting, and a subset of the N TRPs can be selected or determined for the CJT. In some cases, the number of N TRPs can be configured (e.g., by network entity 105) via higher layer signaling (e.g., RRC signaling), and one or more parameters associated with the N TRPs can be configured (e.g., by network entity 105) via higher layer signaling (e.g., RRC signaling). In some such cases, one transmission hypothesis for the CJT can be supported (e.g., two or more hypotheses may not be supported).

[0089] In some cases, a quantity of N TRPs (e.g., a quantity of cooperating TRPs) may be selected by the UE 115 and reported as part of the CSI report, where N may be greater than or equal to 1 and may be less than or equal to the total number (e.g., maximum number) of available (e.g., configured) TRPs (e.g., N TRP , up to a maximum number of TRPs configured by the network entity 105). The UE 115 may also report which TRP is selected among the N TRPs. In some such cases, one transmission hypothesis or multiple transmission hypotheses (e.g., the same or different N values) may be supported. When the number of N TRPs is configured for or selected by the UE 115, the UE 115 may:

[0090]

number

[0091] [Table 1]

[0092] In some cases, the UE 115 may report CSI corresponding to a number of transmission hypotheses (e.g., K hypotheses). In some such cases, the number of N TRPs may be configured (e.g., by the network entity 105) via higher layer signaling (e.g., RRC signaling), and one or more parameters of the N TRPs may be configured. The K transmission hypotheses may be configured (e.g., by the network entity 105) or may be reported by the UE 115. When the UE 115 reports K transmission hypotheses, the UE 115 may:

[0093]

number

[0094] Based on the CSI and / or CMR configuration, the UE 115 determines the quantity of computational resources (e.g., the number of active CSI-RS resources or ports, O CPU However, in some cases, a CMR may not be configured for CJT over multiple TRPs (e.g., it may support other transmissions but may not be configured to support CJT over multiple TRPs).

[0095] The present disclosure provides techniques for configuring CMR (e.g., for CSI reporting) of a CJT via multiple TRPs. For example, to support configuring CMR (e.g., for CSI reporting of a CJT via multiple TRPs), the UE 115 may report an ability to support two or more CSI-RS resources in a CSI-RS resource set 305. In some cases, CSI-RS resources associated with different respective quantities of ports may be configured in the CSI-RS resource set 305 of the CJT. For example, two or more TRPs may be included in a CSI-RS resource group 310 (e.g., a TRP group) associated with one or more respective CSI-RS resources, where the CSI-RS resource(s) are associated with a set of ports corresponding to the ports of the TRPs in the CSI-RS resource group 310.

[0096] FIG. 4 illustrates an example of a wireless communication system 400 supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The wireless communication system 400 may implement or be implemented by one or more aspects of the wireless communication system 100, transmission schemes 200-a and 200-b, or resource scheme 300. For example, the wireless communication system 400 may include a TRP 405-a, a TRP 405-b, and a UE 115-c, which may be examples of corresponding devices described with reference to FIGS. 1-3. While the example illustrated by FIG. 4 and described herein may be associated with two TRPs, the same example may be extended to any number of TRPs. For example, in some cases, the examples herein may apply to any number of TRPs, up to four TRPs (e.g., or another number of TRPs).

[0097] As described with reference to FIG. 2B , TRPs 405-a and 405-b may communicate with UE 115-c using CJT. For example, data (e.g., data X) to be transmitted to UE 115-c may be jointly precoded by TRPs 405-a and 405-b, and joint precoding may support phase coherence of the joint transmission. Each TRP 405 may be associated with a respective number of ports (e.g., four ports), each of which may use one or more of the same layers for transmission. For example, two layers may be used for transmission from TRP 405-a, and the same two layers may be used for transmission from TRP 405-b (e.g., a total of two layers for transmission to UE 115-c).

[0098] Each TRP 405 may be associated with a respective precoder that jointly precodes the data transmitted by TRPs 405-a and 405-b. For example, TRP 405-a may be associated with precoder V A The TRP405-b precodes the data X using a precoder V, and the data can be associated with two spatial layers. B The same data X may be precoded using the precoder 405-a and the data may be associated with two spatial layers. The precoders and spatial layers may be configured for CJT from TRPs 405-a and 405-b. After precoding (e.g., jointly precoding) the data, TRPs 405-a and 405-b may transmit (e.g., simultaneously, coherently) the precoded data to UE 115-c via their respective ports.

[0099] The CJT from TRPs 405-a and 405-b may be based on or associated with CSI feedback reported by UE 115-c, for example, based on one or more CMR and / or CSI configurations and associated hypotheses, as described with reference to FIG. 3. Based on the one or more CMR and / or CSI configurations, UE 115-c may determine the quantity of computational resources (e.g., O) associated with performing CSI measurements and / or reporting. CPUHowever, as described with reference to FIG. 3, some CMR and / or CSI configurations may not support CJT via multiple TRPs 405.

[0100] Thus, UE 115-c may support configuring CMR for CJT over multiple TRPs 405 (e.g., for CSI reporting for CJT over multiple TRPs 405) by reporting an ability to support two or more CSI-RS resources in a CSI-RS resource set. For example, UE 115-c may transmit an indication of UE 115-c's capability to support CMR including two or more CSI-RS resources for CJT CSI reporting over multiple TRPs 405 to a network entity (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105). Based on the indication of UE 115-c's capability, the network (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105) may determine a CMR configuration for CJT for UE 115-c. A network (e.g., a TRP 405-a, a TRP 405-b, another TRP 405, another network entity 105) may send control signaling to the UE 115-c indicating a CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs 405.

[0101] In some cases, the CSI-RS resources indicated by the CMR configuration may be associated with different respective quantities of ports of the CJT. For example, two or more TRPs 405 may be included in a resource group (e.g., a TRP group) associated with one or more respective CSI-RS resources, and the CSI-RS resource(s) are associated with a set of ports corresponding to the ports of the TRPs in the group.

[0102] Based on the indicated CMR configuration, the UE 115-c may receive one or more CSI-RSs from the TRP 405-a, the TRP 405-b, or both, and measure resources associated with the one or more CSI-RSs. Based on the one or more measurements made by the UE 115-c, the UE 115-c may send a CJT CSI report for multiple TRPs to a network entity (e.g., the TRP 405-a, the TRP 405-b, another TRP 405, another network entity 105), where the CJT CSI report may be determined based on the CMR configuration. Based on the CSI report from the UE 115-c, the TRP 405-a, the TRP 405-b, one or more other TRPs 405, or any combination thereof, may perform CJT and send one or more messages to the UE 115-c as described herein. For example, based on the CSI report, TRP405-a, TRP405-b, and one or more other TRPs 405 may determine, select, or configure respective precoders for precoding and transmitting data to UE 115-c (e.g., via CJT).

[0103] 5 illustrates one example of a resource scheme 500 supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The resource scheme 500 may implement or be implemented by one or more aspects of the wireless communication system 100 or 400, one or more aspects of the transmission schemes 200-a and 200-b, or the resource scheme 300. For example, the resource scheme 500 may be implemented by two or more TRPs and the UE 115, which may be examples of the corresponding devices described with reference to FIGS. 1-4. As described with reference to FIGS. 2B-4, the two or more TRPs may communicate with the UE 115 using CJT.

[0104] As described with reference to Figures 3 and 4, the CJT from two or more TRPs may be based on or associated with CSI feedback reported by the UE 115. For example, the CJT may be based on CSI feedback associated with one or more CMRs and / or CSI configurations and associated hypotheses, as described with reference to Figures 3 and 4. Based on the one or more CMRs and / or CSI configurations, the UE 115 may determine the quantity of active resources (e.g., or ports) associated with performing CSI measurements and / or reporting, the quantity of computational resources (e.g., O CPU ), or both.

[0105] In a first example, the set of CSI-RS resources of the CMR configuration 505 may include one CSI-RS resource 510 (e.g., a non-zero power (NZP) CSI-RS resource 510) for all TRPs (e.g., two or more TRPs) configured for the UE 115. In a second example, the set of CSI-RS resources of the CMR configuration 505 may include one respective CSI-RS resource 510 (e.g., an NZP CSI-RS resource 510) for each TRP configured for the UE 115 (e.g., N TRP For all TRPs, TRP In a third example, the set of CSI-RS resources of a CMR configuration 505 may include two or more CSI-RS resources 510 (e.g., NZP CSI-RS resources 510), but there may be less than one CSI-RS resource 510 per TRP configured for the UE 115 (e.g., one <K<N TRP In the case of N TRP (It may contain K resources for all K TRPs).

[0106] 4, in the case of CJT CSI reporting for multiple TRPs, the UE 115 may report whether it supports one CSI-RS resource 510 (e.g., an NZP CSI-RS resource 510) or two or more CSI-RS resources 510 for CMR. In some cases, support for at least one CSI-RS resource 510 (e.g., an NZP CSI-RS resource 510) may be a mandatory or required UE feature and / or capability (e.g., as mandated or required by a wireless communication standard). The CMR configuration 505 may be determined by the network (e.g., network entity 105, TRP) and indicated to the UE 115 based on the indicated support of one or more CSI-RS resources 510.

[0107] In some cases (e.g., 1 <K<N TRPIn the example of a CMR configuration 505 indicating K CSI-RS resources 510, two or more CSI-RS resources 510, each associated with a different quantity of ports, may be configured within the CSI-RS resource set used for CJT CSI for multiple TRPs. For example, the CMR configuration 505 may include or indicate a first TRP group 515-a (e.g., a group of TRPs sharing the same spatial and / or frequency domain criteria selection reported in CSI), which may include TRPs A and B, and the TRP group 515-a may be associated with CSI-RS resource 510-a. Similarly, the CMR configuration 505 may include or indicate a first TRP group 515-b, which may include TRP C, and the TRP group 515-b may be associated with CSI-RS resource 510-b. CSI-RS resource 510-a may be associated with a set of ports (e.g., 8 ports) corresponding to TRP A and a set of ports (e.g., 8 ports) corresponding to TRP B. Similarly, CSI-RS resource 510-b may be associated with a set of ports (e.g., 8 ports) corresponding to TRP C. Thus, if each TRP is associated with the same number of ports (e.g., 8 ports), CSI-RS resource 510-a may be associated with a different number of ports (e.g., 16 ports) than CSI-RS resource 510-b.

[0108] In another example, with TRP A, TRP B, TRP C, and TRP D, each TRP may be associated with the same number of ports (e.g., eight ports), and TRPs B and C may be defined as a TRP group 515 (e.g., a group of TRPs sharing the same spatial and / or frequency domain criteria selection reported in CSI). The CMR configuration 505 may indicate or include respective CSI-RS resources 510 that may be configured for TRP A and TRP D, and another CSI-RS resource 510 that may be configured for the TRP group 515 that includes TRPs B and C. Thus, the CSI-RS resource set configured by the CMR configuration 505 may include three CSI-RS resources 510, where each CSI-RS resource 510 for TRP A and TRP D corresponds to the number of ports associated with each TRP (e.g., eight ports), and the CSI-RS resources 510 for TRPs B and C correspond to twice the number of ports associated with each TRP (e.g., 16 ports).

[0109] In some cases, the CMR configuration 505 may indicate (e.g., or the wireless communication standard may indicate) that the CSI-RS resources 510 (e.g., NZP CSI-RS resources 510) are located in the same slot or in consecutive slots (e.g., within two time-consecutive slots). The CMR configuration 505 (e.g., or the standard) may further indicate that there will be no uplink or downlink switching between any of the configured CSI-RS resources (e.g., which may maintain or support phase continuity). For example, there may be no uplink or downlink switching between the first CSI-RS resource 510 of the CMR configuration 505 and the last CSI-RS resource 510 of the CMR configuration 505 (e.g., the direction of communication may be maintained).

[0110] In some cases, the UE 115 may report CJT CSI reports for multiple TRPs while operating in discontinuous reception (DRX) mode. For example, the UE 115 may report CSI for one or more TRP hypotheses selected for CJT. In a first example, the UE 115 may not receive any CSI-RS occasions (e.g., CSI-RS) for any CSI-RS resources associated with each hypothesis (e.g., of the CJT for multiple TRPs) within the same DRX active time (e.g., CSI reference resource time, by cutoff time). In such a case, the UE 115 may drop the report associated with each hypothesis (e.g., based on failing to receive the CSI-RS occasion). In a second example, the UE 115 may receive at least one set of CSI-RS occasions (e.g., at least one CSI-RS) for each resource associated with each hypothesis (e.g., a hypothesis associated with TRPs A, C, and D) within the same DRX active time (e.g., a CSI reference resource time, up to a cutoff time). That is, related CSI-RS, such as the CSI-RS associated with each hypothesis (e.g., TRPs A, C, and D), may be received in the same DRX active time (e.g., to maintain or support phase continuity). In such a case, the UE 115 may perform CSI reporting for each hypothesis (e.g., may transmit a CJT CSI report associated with the hypothesis).

[0111] 6 illustrates one example process flow 600 for supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. In some examples, process flow 600 may implement or be implemented by one or more aspects of wireless communication system 100 or 400, one or more aspects of transmission schemes 200-a and 200-b, resource scheme 300, or resource scheme 500. For example, process flow 600 may be implemented by UE 115-d and network entity 105-a (e.g., a TRP or other network entity), which may be an example of UE 115 and network entity 105 (e.g., a TRP) described with reference to FIGS. 1-5.

[0112] In the following description of process flow 600, operations may be performed in a different order than shown, or operations performed by UE 115-d and network entity 105-a may be performed in a different order or at different times. For example, some operations may be omitted from process flow 600, or other operations may be added to process flow 600. Although UE 115-d and network entity 105-a are shown performing the operations of process flow 600, some aspects of some operations may also be performed by one or more other wireless devices. For example, some actions shown as performed by network entity 105-a may be performed by another network entity 105, a TRP, or multiple TRPs.

[0113] At 605, the UE 115-d may transmit to the network entity 105-a an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs (e.g., as described with reference to FIGS. 3-5). For example, the UE 115-d may transmit an indication of the capability to support a CMR including two or more CSI-RS resources to support CJT CSI from multiple TRPs.

[0114] At 610, the network entity 105-a may send control signaling to the UE 115-d indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs (e.g., as described with reference to FIGS. 3-5). The CMR configuration may be based on the capability of the UE 115-d to support a CMR including two or more CSI-RS resources (e.g., a CMR configured as described with reference to one or more of FIGS. 3-5). The configuration may indicate one or more time resources, or groupings or ports, associated with the set of CSI-RS resources, as described with reference to FIG. 5.

[0115] At 615, in some cases, the network entity 105-a (e.g., a TRP) or another device (e.g., another network entity 105, another TRP, multiple TRPs) may transmit one or more CSI-RS to the UE 115-d via a set of CSI-RS resources. The one or more CSI-RS may be based on a CMR configuration or one or more parameters associated therewith. Based on the transmission of the one or more CSI-RS, the UE 115-d may measure the set of CSI-RS resources (e.g., measure one or more CSI-RS) to perform CSI reporting (e.g., for CJT CSI reporting for multiple TRPs).

[0116] At 620, the UE 115-d may transmit to the network entity 105-a a CJT CSI report for multiple TRPs determined based on the received CSI-RS(s) (e.g., based on measurements performed by the UE 115-d). The CJT CSI report may be associated with one or more hypotheses for selecting a TRP among the multiple TRPs for CJT. For example, as described with reference to FIG. 5, the UE 115-d may transmit a CJT CSI report if at least one CSI-RS is received for each resource associated with the respective hypothesis, and may refrain from transmitting a CJT CSI report if no CSI-RS is received for each resource associated with the respective hypothesis.

[0117] In 625, in some cases, the network entity 105-a (e.g., a TRP) or another device (e.g., another network entity 105, another TRP, multiple TRPs) may transmit a CJT (e.g., from multiple TRPs) to the UE 115-d. The CJT may be based on a CJT CSI report transmitted by the UE 115-d (e.g., one or more parameters for the CJT or one or more TRPs for the CJT may be based on the CSI report, among other examples).

[0118] 7 shows a block diagram 700 of a device 705 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 705 may be an example of an aspect of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0119] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to CSI configurations of joint transmissions from multiple TRPs). The information may be passed to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

[0120] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to CSI configurations of joint transmissions from multiple TRPs), user data, control information, or any combination thereof. In some examples, the transmitter 715 may be collocated with the receiver 710 within a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0121] The communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be examples of means for performing various aspects of CSI configuration for joint transmissions from multiple TRPs as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0122] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting means for performing the functions described in this disclosure. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0123] Additionally or alternatively, in some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). When implemented in code executed by a processor, the functionality of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., that may be configured as or otherwise support a means for performing the functions described in this disclosure).

[0124] In some examples, communications manager 720 may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with receiver 710, transmitter 715, or both. For example, communications manager 720 may receive information from receiver 710, transmit information to transmitter 715, or be integrated in combination with receiver 710, transmitter 715, or both to acquire information, output information, or perform various other operations described herein.

[0125] The communications manager 720 may support wireless communications in a UE in accordance with examples disclosed herein. For example, the communications manager 720 may be configured as or otherwise support a means for transmitting to a network entity an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communications manager 720 may be configured as or otherwise support a means for receiving from a network entity control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The communications manager 720 may be configured as or otherwise support a means for transmitting to a network entity a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0126] By including or configuring the communications manager 720 according to examples described herein, the device 705 (e.g., a processor controlling or otherwise coupled to the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) may support techniques for more efficient utilization of communications resources. For example, the communications manager 720 may support CSI determination and reporting based on a CMR configuration. The CSI may support CJT from multiple TRPs, which may more efficiently utilize communications resources, reduce overhead, improve communication quality, and increase available power.

[0127] 8 shows a block diagram 800 of a device 805 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 805 may be an example of an aspect of the device 705 or UE 115 described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0128] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to CSI configurations of joint transmissions from multiple TRPs). The information may be passed to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.

[0129] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets associated with various information channels (e.g., a control channel, a data channel, an information channel related to CSI configurations of joint transmissions from multiple TRPs), user data, control information, or any combination thereof. In some examples, the transmitter 815 may be collocated with the receiver 810 within a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.

[0130] The device 805 or its various components may be an example of a means for performing various aspects of CSI configuration for joint transmissions from multiple TRPs described herein. For example, the communications manager 820 may include a UE capability indication component 825, a CMR configuration component 830, a channel measurement report indication component 835, or any combination thereof. The communications manager 820 may be an example of an aspect of the communications manager 720 described herein. In some examples, the communications manager 820, or its various components, may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, transmit information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to acquire information, output information, or perform various other operations described herein.

[0131] The communications manager 820 may support wireless communications in a UE according to examples disclosed herein. The UE capability indication component 825 may be configured as or may otherwise support an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs to a network entity. The CMR configuration component 830 may be configured as or may otherwise support a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The channel measurement report indication component 835 may be configured as or may otherwise support a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources to a network entity.

[0132] FIG. 9 illustrates a block diagram 900 of a communications manager 920 supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. Communications manager 920 may be an example of aspects of communications manager 720, communications manager 820, or both, as described herein. Communications manager 920 or its various components may be an example of a means for performing various aspects of CSI configuration for joint transmissions from multiple TRPs, as described herein. For example, communications manager 920 may include a UE capability indication component 925, a CMR configuration component 930, a channel measurement report indication component 935, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0133] The communications manager 920 may support wireless communications in the UE according to examples disclosed herein. The UE capability indication component 925 may be configured as or may otherwise support an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs to a network entity. The CMR configuration component 930 may be configured as or may otherwise support a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The channel measurement report indication component 935 may be configured as or may otherwise support a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources to a network entity.

[0134] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support receiving control signaling indicating a CMR configuration that identifies a set of CSI-RS resources that includes two or more CSI-RS resources each associated with a different quantity of ports.

[0135] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support receiving control signaling indicating a CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs of the plurality of TRPs, where each CSI-RS resource is associated with a set of ports corresponding to the group of two or more TRPs.

[0136] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support receiving control signaling indicating a CMR configuration that identifies a second respective CSI-RS resource of a set of CSI-RS resources associated with a TRP of the plurality of TRPs, where each CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports is associated with a first quantity of ports, and where the second set of ports is associated with a second quantity of ports that is different from the first quantity of ports.

[0137] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support receiving control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, where the time resources are associated with one communication direction.

[0138] In some examples, to support transmission of CJT channel measurement reports, the channel measurement report indication component 935 may be configured as or otherwise support a means for transmitting, in a discontinuous reception mode, a CJT channel measurement report, where the CJT channel measurement report is transmitted based on receiving each CSI-RS resource from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0139] In some examples, to support transmission of CJT channel measurement reports, the channel measurement report indication component 935 may be configured as or otherwise support a means for transmitting, in a discontinuous reception mode, a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT, where the CJT channel measurement report for the hypothesis is transmitted based on receiving each CSI-RS resource associated with the hypothesis from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0140] In some examples, to support transmission of a CJT channel measurement report, the channel measurement report indication component 935 may be configured as or may otherwise support, in discontinuous reception mode, refraining from transmitting a second CJT channel measurement report associated with a second hypothesis used to select a TRP among multiple TRPs for CJT based on the UE's failure to receive at least one CSI-RS resource associated with the second hypothesis from the set of CSI-RS resources within the same active time of the discontinuous reception mode.

[0141] 10 illustrates a diagram of a system 1000 including a device 1005 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1005 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, code 1035, and a processor 1040. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1045).

[0142] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 may also manage peripheral devices not integrated with the device 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 1010 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 1010 may represent or be able to interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 1010 may be implemented as part of a processor, such as the processor 1040. In some cases, a user may interact with the device 1005 through the I / O controller 1010 or through hardware components controlled by the I / O controller 1010 .

[0143] In some cases, the device 1005 may include a single antenna 1025. However, in some other cases, the device 1005 may have two or more antennas 1025, which may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bidirectionally via one or more antennas 1025, wired links, or wireless links described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1015 may also include a modem for modulating packets, providing the received packets to one or more antennas 1025 for transmission, and demodulating packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of the transmitter 715, transmitter 815, receiver 710, receiver 810, or any combination or component thereof described herein.

[0144] The memory 1030 may include random access memory (RAM) and read-only memory (ROM). The memory 1030 may store computer-readable computer-executable code 1035, which includes instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored on a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040, but may instead cause a computer to perform (e.g., when compiled or executed) the functions described herein. In some cases, the memory 1030 may include a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0145] The processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1040. The processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting CSI configuration of joint transmissions from multiple TRPs). For example, the device 1005 or a component of the device 1005 may include the processor 1040 and the memory 1030 coupled to or associated with the processor 1040, and the processor 1040 and the memory 1030 may be configured to perform various functions described herein.

[0146] The communications manager 1020 may support wireless communications in the UE in accordance with examples disclosed herein. For example, the communications manager 1020 may be configured as or otherwise support a means for transmitting, to a network entity, an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communications manager 1020 may be configured as or otherwise support a means for receiving, from a network entity, control signaling indicating a CMR configuration that identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The communications manager 1020 may be configured as or otherwise support a means for transmitting, to a network entity, a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources.

[0147] By including or configuring a communications manager 1020 according to examples described herein, the device 1005 may support techniques for more efficient utilization of communications resources. For example, the communications manager 1020 may support CSI determination and reporting based on CMR configurations. The CSI may support CJT from multiple TRPs, which may more efficiently utilize communications resources, reduce overhead, improve communication quality, and increase available power.

[0148] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise in cooperation with the transceiver 1015, one or more antennas 1025, or any combination thereof. For example, the communications manager 1020 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 1015. Although the communications manager 1020 is shown as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the processor 1040 to cause the device 1005 to perform various aspects of CSI configuration for joint transmissions from multiple TRPs as described herein, or the processor 1040 and the memory 1030 may be configured to perform or support such operations in other ways.

[0149] 11 shows a block diagram 1100 of a device 1105 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of an aspect of a network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0150] The receiver 1110 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). The information may be passed to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0151] The transmitter 1115 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1105. For example, the transmitter 1115 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). In some examples, the transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, the transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located within a transceiver that may include or be coupled to a modem.

[0152] The communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be examples of means for performing various aspects of CSI configuration for joint transmissions from multiple TRPs as described herein. For example, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0153] In some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry). The hardware may include a processor, a DSP, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may be configured as or otherwise support means for performing the functions described in this disclosure. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0154] Additionally or alternatively, in some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communications management software or firmware). When implemented in code executed by a processor, the functionality of the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., that may be configured as or otherwise support a means for performing the functions described in this disclosure).

[0155] In some examples, communications manager 1120 may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with receiver 1110, transmitter 1115, or both. For example, communications manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated in combination with receiver 1110, transmitter 1115, or both to acquire information, output information, or perform various other operations described herein.

[0156] The communications manager 1120 may support wireless communications in a network entity according to examples disclosed herein. For example, the communications manager 1120 may be configured as or may otherwise support an indication of a UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communications manager 1120 may be configured as or may otherwise support a control signaling for a UE indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The communications manager 1120 may be configured as or may otherwise support a CJT channel measurement report based on a CMR configuration of a set of CSI-RS resources.

[0157] By including or configuring the communications manager 1120 according to examples described herein, the device 1105 (e.g., a processor controlling or otherwise coupled to the receiver 1110, the transmitter 1115, the communications manager 1120, or a combination thereof) can support techniques for more efficient utilization of communications resources. For example, the communications manager 1120 may support CSI determination and reporting based on a CMR configuration. The CSI may support CJT from multiple TRPs, which may more efficiently utilize communications resources, reduce overhead, improve communication quality, and increase available power (e.g., by improving communication quality and reducing retransmissions).

[0158] 12 shows a block diagram 1200 of a device 1205 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of an aspect of the device 1105 or the network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communications manager 1220. The device 1205 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0159] The receiver 1210 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). The information may be passed to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0160] The transmitter 1215 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1205. For example, the transmitter 1215 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). In some examples, the transmitter 1215 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, the transmitter 1215 may support outputting information by transmitting signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be co-located within a transceiver that may include or be coupled to a modem.

[0161] The device 1205 or its various components may be an example of a means for performing various aspects of CSI configuration for joint transmissions from multiple TRPs described herein. For example, the communications manager 1220 may include a capabilities component 1225, a CMR configuration indication component 1230, a channel measurement reporting component 1235, or any combination thereof. The communications manager 1220 may be an example of an aspect of the communications manager 1120 described herein. In some examples, the communications manager 1220, or its various components, may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with the receiver 1210, the transmitter 1215, or both. For example, the communications manager 1220 may receive information from the receiver 1210, transmit information to the transmitter 1215, or be integrated in combination with the receiver 1210, the transmitter 1215, or both to acquire information, output information, or perform various other operations described herein.

[0162] The communications manager 1220 may support wireless communications in a network entity according to examples disclosed herein. The capabilities component 1225 may be configured as, or may in some cases support, a means for receiving an indication of a UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration indication component 1230 may be configured as, or may otherwise support, a means for transmitting control signaling indicating a CMR configuration for the UE that identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The channel measurement reporting component 1235 may be configured as, or may otherwise support, a means for receiving a CJT channel measurement report based on a CMR configuration of a set of CSI-RS resources.

[0163] 13 illustrates a block diagram 1300 of a communications manager 1320 supporting CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The communications manager 1320 may be an example of aspects of the communications manager 1120, the communications manager 1220, or both, described herein. The communications manager 1320 or various components thereof may be an example of a means for implementing various aspects of CSI configuration for joint transmissions from multiple TRPs described herein. For example, the communications manager 1320 may include a capabilities component 1325, a CMR configuration indication component 1330, a channel measurement reporting component 1335, or any combination thereof. Each of these components may communicate directly or indirectly with one another (e.g., via one or more buses), which may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualization component associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0164] The communications manager 1320 may support wireless communications in a network entity according to examples disclosed herein. The capabilities component 1325 may be configured as or otherwise support a means for receiving an indication of a UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration indication component 1330 may be configured as or otherwise support a means for transmitting control signaling indicating a CMR configuration for the UE that identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The channel measurement reporting component 1335 may be configured as or otherwise support a means for receiving a CJT channel measurement report based on a CMR configuration of a set of CSI-RS resources.

[0165] In some examples, to support transmission of control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support a means for transmitting control signaling indicating a CMR configuration that identifies a set of CSI-RS resources that includes two or more CSI-RS resources each associated with a different quantity of ports.

[0166] In some examples, to support transmission of control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support a means for transmitting control signaling indicating a CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs of the plurality of TRPs, where each CSI-RS resource is associated with a set of ports corresponding to the group of two or more TRPs.

[0167] In some examples, to support transmission of control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or may otherwise support means for transmitting control signaling indicating a CMR configuration that identifies a second respective CSI-RS resource of the set of CSI-RS resources associated with a TRP of the plurality of TRPs, where each CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports is associated with a first quantity of ports, and where the second set of ports is associated with a second quantity of ports that is different from the first quantity of ports.

[0168] In some examples, to support transmission of control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support means for transmitting control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, where the time resources are associated with one communication direction.

[0169] In some examples, to support reception of CJT channel measurement reports, the channel measurement reporting component 1335 may be configured as or otherwise support receiving a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT, where the CJT channel measurement report for the hypothesis is received based on the UE receiving each CSI-RS resource associated with the hypothesis from a set of CSI-RS resources within the same active time of the UE's discontinuous reception mode.

[0170] In some examples, to support reception of CJT channel measurement reports, the channel measurement reporting component 1335 may be configured as or may otherwise support receiving, in a discontinuous reception mode, a CJT channel measurement report, where the CJT channel measurement report is received based on transmitting each CSI-RS resource from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0171] In some examples, the hypothesis is other than the second hypothesis in which the UE is unable to receive at least one CSI-RS resource associated with the second hypothesis from the set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0172] 14 illustrates a diagram of a system 1400 including a device 1405 that supports CSI configuration for joint transmissions from multiple TRPs in accordance with one or more aspects of the present disclosure. The device 1405 may be an example of or include components of a device 1105, a device 1205, or a network entity 105 as described herein. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communication via one or more wired interfaces, one or more wireless interfaces, or a combination thereof. The device 1405 may include components that support outputting and receiving communications, such as a communications manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, code 1430, and a processor 1435. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1440).

[0173] The transceiver 1410 may support bidirectional communication via a wired link, a wireless link, or both, as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may bidirectionally communicate with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may bidirectionally communicate with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415 that may be capable of transmitting or receiving (e.g., simultaneously) wireless transmissions. The transceiver 1410 may also include a modem for modulating signals, providing the modulated signals for transmission (e.g., by one or more antennas 1415 or by a wired transmitter), receiving the modulated signals (e.g., from one or more antennas 1415 or from a wired receiver), and demodulating the signals. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled with one or more antennas 1415 configured to support various receive or acquisition operations, or one or more interfaces coupled with one or more antennas 1415 configured to support various transmit or output operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured to couple to one or more processors or memory components operable to perform or support operations based on received or acquired information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 1410, or the transceiver 1410 and one or more antennas 1415, or the transceiver 1410 and one or more antennas 1415 and one or more processors or memory components (e.g., the processor 1435, or the memory 1425, or both) may be included on a chip or chip assembly installed in the device 1405.In some examples, the transceiver may be operable to support communication over one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0174] The memory 1425 may include RAM and ROM. The memory 1425 may store computer-readable computer-executable code 1430, which includes instructions that, when executed by the processor 1435, cause the device 1405 to perform various functions described herein. The code 1430 may be stored on a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, the code 1430 may not be directly executable by the processor 1435, but may instead cause the computer to perform (e.g., when compiled or executed) the functions described herein. In some cases, the memory 1425 may include a BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0175] The processor 1435 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof). In some cases, the processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1435. The processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1425) to cause the device 1405 to perform various functions (e.g., functions or tasks supporting CSI configuration of joint transmissions from multiple TRPs). For example, the device 1405 or a component of the device 1405 may include the processor 1435 and the memory 1425 coupled to the processor 1435, where the processor 1435 and the memory 1425 are configured to perform various functions described herein. Processor 1435 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that may host functionality (e.g., by executing code 1430) to perform the functions of device 1405. Processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored on device 1405 (e.g., in memory 1425). In some implementations, processor 1435 may be a component of a processing system. A processing system may generally refer to a system or set of machines or components that receives inputs, processes the inputs, and generates a set of outputs (e.g., that may be passed to other systems or components of device 1405).For example, the processing system of device 1405 may refer to a system that includes various other components or subcomponents of device 1405, such as processor 1435, or transceiver 1410, or communications manager 1420, or other components or combinations of components of device 1405. The processing system of device 1405 may interface with other components of device 1405 and may process information (e.g., input or signals) received from other components or output information to other components. For example, a chip or modem of device 1405 may include a processing system and one or more interfaces for outputting information, acquiring information, or both. The one or more interfaces may be implemented as or may otherwise include a first interface configured to output information and a second interface configured to acquire information, or the same interface configured to output information and acquire information, among other implementations. In some implementations, the one or more interfaces refer to an interface between the processing system and a transmitter of the chip or modem, such that device 1405 may transmit information output from the chip or modem. Additionally or alternatively, in some implementations, the one or more interfaces refer to an interface between a processing system and a receiver of a chip or modem, such that the device 1405 obtains information or signal input, and that information can be passed to the processing system. Those skilled in the art will readily recognize that the first interface can also obtain information or signal input, and the second interface can also output information or signal output.

[0176] In some examples, bus 1440 may support communications within (e.g., within) protocol layers of a protocol stack. In some examples, bus 1440 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within a component of device 1405 or between different components of device 1405, which may be collocated or located in different locations (e.g., device 1405 may refer to a system in which one or more of communications manager 1420, transceiver 1410, memory 1425, code 1430, and processor 1435 may be located in one of or split among different components).

[0177] In some examples, the communications manager 1420 may manage aspects of communications with the core network 130 (e.g., over one or more wired or wireless backhaul links). For example, the communications manager 1420 may manage the forwarding of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1420 may manage communications with other network entities 105 and may include a controller or scheduler for cooperating with the other network entities 105 to control communications with the UEs 115. In some examples, the communications manager 1420 may support an X2 interface within LTE / LTE-A wireless communications network technologies to provide communications between network entities 105.

[0178] The communications manager 1420 may support wireless communications in a network entity according to examples disclosed herein. For example, the communications manager 1420 may be configured as or otherwise support a means for receiving an indication of a UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communications manager 1420 may be configured as or otherwise support a means for transmitting control signaling for a UE indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's capability to support a CMR including two or more CSI-RS resources. The communications manager 1420 may be configured as or otherwise support a means for receiving a CJT channel measurement report based on a CMR configuration of a set of CSI-RS resources.

[0179] By including or configuring a communications manager 1420 according to examples as described herein, the device 1405 may support techniques for more efficient utilization of communications resources. For example, the communications manager 1420 may support CSI determination and reporting based on CMR configurations. The CSI may support CJT from multiple TRPs, which may more efficiently utilize communications resources, reduce overhead, improve communication quality, and increase available power.

[0180] In some examples, communications manager 1420 may be configured to perform various operations (e.g., receive, acquire, monitor, output, transmit) using or otherwise cooperating with transceiver 1410, one or more antennas 1415 (e.g., if applicable), or any combination thereof. For example, communications manager 1420 may be configured to receive or transmit messages or other signaling as described herein via transceiver 1410. Although communications manager 1420 is shown as a separate component, in some examples, one or more functions described with reference to communications manager 1420 may be supported or performed by transceiver 1410, processor 1435, memory 1425, code 1430, or any combination thereof. For example, the code 1430 may include instructions executable by the processor 1435 to cause the device 1405 to perform various aspects of CSI configuration for joint transmissions from multiple TRPs as described herein, or the processor 1435 and the memory 1425 may be configured to perform or support such operations in other ways.

[0181] FIG. 15 shows a flowchart illustrating a method 1500 for supporting CSI configuration for joint transmissions from multiple TRPs according to one or more aspects of the present disclosure. The operations of method 1500 may be performed by a UE or components thereof as described herein. For example, the operations of method 1500 may be performed by the UE 115 described with reference to FIGS. 1-10. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may implement aspects of the described functions using dedicated hardware.

[0182] At 1505, the method may include transmitting to a network entity an indication of the UE's capability to support CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1505 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1505 may be performed by the UE capability indication component 925 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1505 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0183] At 1510, the method may include receiving control signaling from a network entity indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for a plurality of TRPs, the CMR configuration being based on the UE's capability to support CMR including two or more CSI-RS resources. The operations of 1510 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed by the CMR configuration component 930 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1510 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0184] At 1515, the method may include transmitting, to a network entity, a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources. The operations of 1515 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1515 may be performed by the channel measurement report indication component 935 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1515 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0185] FIG. 16 shows a flowchart illustrating a method 1600 for supporting CSI configuration for joint transmissions from multiple TRPs according to one or more aspects of the present disclosure. The operations of method 1600 may be performed by a UE or components thereof as described herein. For example, the operations of method 1600 may be performed by the UE 115 described with reference to FIGS. 1-10. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may implement aspects of the described functions using dedicated hardware.

[0186] At 1605, the method may include transmitting to a network entity an indication of the UE's capability to support CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1605 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1605 may be performed by the UE capability indication component 925 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1605 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0187] At 1610, the method may include receiving control signaling from a network entity indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for a plurality of TRPs, the CMR configuration including two or more CSI-RS resources based on a capability of the UE to support CMR, the set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports. The operations of 1610 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1610 may be performed by the CMR configuration component 930 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1610 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0188] At 1615, the method may include transmitting, to a network entity, a CJT channel measurement report determined based on the CMR configuration of the set of CSI-RS resources. The operations of 1615 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1615 may be performed by the channel measurement report indication component 935 described with reference to FIG. 9. Additionally or alternatively, the means for performing 1615 may include, but is not required to include, for example, an antenna 1025, a transceiver 1015, a communications manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0189] FIG. 17 illustrates a flowchart illustrating a method 1700 for supporting CSI configuration for joint transmissions from multiple TRPs according to one or more aspects of the present disclosure. The operations of method 1700 may be implemented by a network entity or a component thereof as described herein. For example, the operations of method 1700 may be performed by a network entity as described with reference to FIGS. 1-6 and 11-14. In some examples, the network entity may execute a set of instructions to control functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may perform aspects of the described functions using dedicated hardware.

[0190] At 1705, the method may include receiving an indication of the UE's capability to support CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1705 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1705 may be performed by the capabilities component 1325 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1705 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0191] At 1710, the method may include transmitting control signaling indicating, for the UE, a CMR configuration that identifies a set of CSI-RS resources for CJT CSI reporting for a plurality of TRPs, the CMR configuration being based on the UE's capability to support CMR including two or more CSI-RS resources. The operations of 1710 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1710 may be performed by the CMR configuration indication component 1330 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1710 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0192] At 1715, the method may include receiving a CJT channel measurement report based on a CMR configuration of the set of CSI-RS resources. The operations of 1715 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1715 may be performed by the channel measurement reporting component 1335 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1715 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0193] FIG. 18 illustrates a flowchart illustrating a method 1800 for supporting CSI configuration for joint transmissions from multiple TRPs according to one or more aspects of the present disclosure. The operations of method 1800 may be implemented by a network entity or a component thereof as described herein. For example, the operations of method 1800 may be performed by a network entity as described with reference to FIGS. 1-6 and 11-14. In some examples, the network entity may execute a set of instructions to control functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may perform aspects of the described functions using dedicated hardware.

[0194] At 1805, the method may include receiving an indication of the UE's capability to support CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1805 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1805 may be performed by the capabilities component 1325 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1805 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0195] At 1810, the method may include transmitting control signaling indicating, for the UE, a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for a plurality of TRPs, the CMR configuration including two or more CSI-RS resources based on the UE's capability to support CMR, the set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports. The operations of 1810 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1810 may be performed by the CMR configuration indication component 1330 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1810 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0196] At 1815, the method may include receiving a CJT channel measurement report based on a CMR configuration of the set of CSI-RS resources. The operations of 1815 may be performed in accordance with examples disclosed herein. In some embodiments, aspects of the operations of 1815 may be performed by the channel measurement reporting component 1335 described with reference to FIG. 13. Additionally or alternatively, the means for performing 1815 may include, but is not required to include, for example, an antenna 1415, a transceiver 1410, a communications manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0197] The following provides a summary of aspects of the present disclosure.

[0198] Aspect 1: A method of wireless communication in a UE, the method including: transmitting to a network entity an indication of the UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs; receiving from the network entity control signaling indicating a CMR configuration identifying a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based at least in part on the UE's capability to support a CMR including the two or more CSI-RS resources; and transmitting to the network entity a CJT channel measurement report determined at least in part based on the CMR configuration of the set of CSI-RS resources.

[0199] Aspect 2: The method of aspect 1, wherein receiving control signaling indicating a CMR configuration includes receiving control signaling indicating a CMR configuration identifying a set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports.

[0200] Aspect 3: The method of any one of aspects 1 to 2, wherein receiving control signaling indicating a CMR configuration includes receiving control signaling indicating a CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs among the plurality of TRPs, each CSI-RS resource being associated with a set of ports corresponding to the group of two or more TRPs.

[0201] Aspect 4: The method of aspect 3, wherein receiving control signaling indicating a CMR configuration includes receiving control signaling indicating a CMR configuration that identifies a second respective CSI-RS resource of a set of CSI-RS resources associated with a TRP of the plurality of TRPs, where each CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports is associated with a first quantity of ports, and where the second set of ports is associated with a second quantity of ports different from the first quantity of ports.

[0202] Aspect 5: The method of any one of aspects 1 to 4, wherein receiving control signaling indicating a CMR configuration includes receiving control signaling indicating a CMR configuration that identifies a set of CSI-RS resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, wherein the time resources are associated with one communication direction.

[0203] Aspect 6: The method of any one of aspects 1 to 5, wherein transmitting the CJT channel measurement report includes transmitting, in a discontinuous reception mode, a CJT channel measurement report, wherein the CJT channel measurement report is transmitted based at least in part on receiving each CSI-RS resource from the set of CSI-RS resources within the same active time of the discontinuous reception mode.

[0204] Aspect 7: A method according to any one of aspects 1 to 5, wherein transmitting a CJT channel measurement report includes transmitting a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT in a discontinuous reception mode, wherein the CJT channel measurement report for the hypothesis is transmitted based at least in part on receiving each CSI-RS resource associated with the hypothesis from a set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0205] Aspect 8: The method of aspect 7, further including: in a discontinuous reception mode, refraining from transmitting a second CJT channel measurement report associated with a second hypothesis used to select a TRP among a plurality of TRPs for CJT based at least in part on the UE's failure to receive at least one CSI-RS resource associated with the second hypothesis from the set of CSI-RS resources within the same active time of the discontinuous reception mode.

[0206] Aspect 9: A method of wireless communication at a network entity, the method including: receiving an indication of a UE's capability to support a CMR including two or more CSI-RS resources for CJT CSI reporting for a plurality of TRPs; transmitting control signaling indicating a CMR configuration for the UE that identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs, the CMR configuration being based at least in part on the UE's capability to support a CMR including the two or more CSI-RS resources; and receiving a CJT channel measurement report based at least in part on the CMR configuration of the set of CSI-RS resources.

[0207] Aspect 10: The method of aspect 9, wherein transmitting control signaling indicating a CMR configuration includes transmitting control signaling indicating a CMR configuration identifying a set of CSI-RS resources including two or more CSI-RS resources each associated with a different quantity of ports.

[0208] Aspect 11: The method of any one of aspects 9 to 10, wherein transmitting control signaling indicating the CMR configuration includes transmitting control signaling indicating the CMR configuration that identifies each CSI-RS resource of a set of CSI-RS resources associated with a group of two or more TRPs of the plurality of TRPs, each CSI-RS resource being associated with a set of ports corresponding to the group of two or more TRPs.

[0209] Aspect 12: The method of aspect 11, wherein transmitting control signaling indicating the CMR configuration includes transmitting control signaling indicating the CMR configuration that identifies a second respective CSI-RS resource of a set of CSI-RS resources associated with a TRP of the plurality of TRPs, where the second respective CSI-RS resource is associated with a second set of ports corresponding to the TRP, where the set of ports is associated with a first quantity of ports, and where the second set of ports is associated with a second quantity of ports different from the first quantity of ports.

[0210] Aspect 13: The method of any one of aspects 9 to 12, wherein transmitting control signaling indicating the CMR configuration includes transmitting control signaling indicating the CMR configuration identifying a set of CSI-RS resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, wherein the time resources are associated with one communication direction.

[0211] Aspect 14: The method of any one of aspects 9 to 13, wherein receiving a CJT channel measurement report includes receiving, in a discontinuous reception mode, a CJT channel measurement report, wherein the CJT channel measurement report is received based at least in part on transmitting each CSI-RS resource from a set of CSI-RS resources within the same active time of the discontinuous reception mode.

[0212] Aspect 15: The method of any one of aspects 9 to 13, wherein receiving a CJT channel measurement report includes receiving a CJT channel measurement report associated with a hypothesis used to select a TRP from a plurality of TRPs for CJT, the CJT channel measurement report being received based at least in part on the UE receiving each CSI-RS resource associated with the hypothesis from a set of CSI-RS resources within the same active time of the UE's discontinuous reception mode.

[0213] Aspect 16: The method of aspect 15, wherein the hypothesis is other than a second hypothesis in which the UE is unable to receive at least one CSI-RS resource associated with the second hypothesis from the set of CSI-RS resources within the same active time in the discontinuous reception mode.

[0214] Aspect 17: A wireless communication apparatus comprising: a memory; a transceiver; and at least one processor coupled to the memory and the transceiver, wherein the at least one processor is configured to cause the apparatus to perform the method of any one of aspects 1 to 8.

[0215] Aspect 18: An apparatus for wireless communication in a UE, comprising at least one means for performing the method of any one of aspects 1 to 8.

[0216] Aspect 19: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code including instructions executable by a processor to perform the method of any one of aspects 1 to 8.

[0217] Aspect 20: A wireless communication apparatus, comprising: a memory; and at least one processor coupled to the memory, wherein the at least one processor is configured to perform the method of any one of aspects 9 to 16.

[0218] Aspect 21: An apparatus for wireless communication in a network entity, the apparatus comprising at least one means for performing the method of any one of aspects 9 to 16.

[0219] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication in a network entity, the code including instructions executable by a processor to perform the method of any one of aspects 9 to 16.

[0220] It should be noted that the methods described herein describe possible implementations, that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Furthermore, aspects from two or more of these methods may be combined.

[0221] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0222] The information and signals described herein may be represented using any of a wide variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0223] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0224] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored on or transmitted using one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed so that portions of the functions are performed at different physical locations.

[0225] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. A disk may reproduce data magnetically, and a disc may reproduce data optically using a laser. Combinations of the above are also included within the scope of computer-readable media.

[0226] As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, the phrase "based on" as used herein should not be construed as referring to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" is to be interpreted the same as the phrase "based at least in part on."

[0227] The terms "determine" or "determining" encompass various actions, and thus "determining" can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database, or other data structure), ascertaining, and the like. "Determining" can also include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), and the like. "Determining" can also include resolving, obtaining, selecting, choosing, establishing, and other similar acts.

[0228] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes between the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of a second reference label, or other subsequent reference label.

[0229] The descriptions set forth herein with reference to the accompanying drawings describe exemplary configurations and do not necessarily represent every example that may be implemented or fall within the scope of the claims. As used herein, the term "example" means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0230] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. 1. A method of wireless communication in a user equipment (UE), comprising: transmitting to a network entity an indication of the UE's capability to support channel measurement resources including two or more channel state information reference signal resources for coherent joint transmission channel state information reporting for multiple transmission and reception points; receiving control signaling from the network entity indicating a channel measurement resource configuration that identifies a set of channel state information reference signal resources for coherent joint transmission channel state information reporting for the plurality of transmission and reception points, the channel measurement resource configuration being based at least in part on the capability of the UE to support the channel measurement resources including two or more channel state information reference signal resources; transmitting to the network entity a coherent joint transmission channel measurement report determined based at least in part on the channel measurement resource configuration of the set of channel state information reference signal resources.

2. receiving the control signaling indicating the channel measurement resource configuration; 2. The method of claim 1, comprising receiving the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including two or more channel state information reference signal resources each associated with a different quantity of ports.

3. receiving the control signaling indicating the channel measurement resource configuration; 2. The method of claim 1, comprising receiving the control signaling indicating the channel measurement resource configuration identifying each channel state information reference signal resource of the set of channel state information reference signal resources associated with a group of two or more transmission and reception points of the plurality of transmission and reception points, wherein the each channel state information reference signal resource is associated with a set of ports corresponding to the group of two or more transmission and reception points.

4. receiving the control signaling indicating the channel measurement resource configuration; 4. The method of claim 3, comprising receiving the control signaling indicating the channel measurement resource configuration identifying a second respective channel state information reference signal resource of the set of channel state information reference signal resources associated with a transmission / reception point of the plurality of transmission / reception points, the second respective channel state information reference signal resource being associated with a second set of ports corresponding to the transmission / reception point, the set of ports being associated with a first quantity of ports, and the second set of ports being associated with a second quantity of ports different from the first quantity of ports.

5. receiving the control signaling indicating the channel measurement resource configuration; 2. The method of claim 1, comprising receiving the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, the time resources being associated with one communication direction.

6. transmitting the coherent joint transmission channel measurement report includes:

2. The method of claim 1, comprising: in a discontinuous reception mode, transmitting the coherent joint transmission channel measurement report, the coherent joint transmission channel measurement report being transmitted based at least in part on receiving each channel state information reference signal resource from the set of channel state information reference signal resources within a same active time of the discontinuous reception mode.

7. transmitting the coherent joint transmission channel measurement report includes:

2. The method of claim 1, comprising: in a discontinuous reception mode, transmitting the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmitting and receiving point among the plurality of transmitting and receiving points for coherent joint transmission, the coherent joint transmission channel measurement report for the hypothesis being transmitted based at least in part on receiving each channel state information reference signal resource associated with the hypothesis from the set of channel state information reference signal resources within a same active time of the discontinuous reception mode.

8. 8. The method of claim 7, further comprising: refraining, in the discontinuous reception mode, from transmitting a second coherent joint transmission channel measurement report associated with the second hypothesis used to select a transmission / reception point among the plurality of transmission / reception points for coherent joint transmission, based at least in part on the UE's failure to receive at least one channel state information reference signal resource associated with a second hypothesis from the set of channel state information reference signal resources within the same active time period of the discontinuous reception mode.

9. 1. A method of wireless communication in a network entity, comprising: receiving an indication of a user equipment (UE) capability to support channel measurement resources including two or more channel state information reference signal resources for coherent joint transmission channel state information reporting for multiple transmission and reception points; transmitting control signaling indicating a channel measurement resource configuration for the UE that identifies a set of channel state information reference signal resources for coherent joint transmission channel state information reporting for the plurality of transmission and reception points, the channel measurement resource configuration being based at least in part on the capability of the UE to support the channel measurement resources including two or more channel state information reference signal resources; receiving a coherent joint transmission channel measurement report based at least in part on the channel measurement resource configuration of the set of channel state information reference signal resources.

10. transmitting the control signaling indicating the channel measurement resource configuration, 10. The method of claim 9, comprising transmitting the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including two or more channel state information reference signal resources each associated with a different quantity of ports.

11. transmitting the control signaling indicating the channel measurement resource configuration, 10. The method of claim 9, comprising transmitting the control signaling indicating the channel measurement resource configuration identifying each channel state information reference signal resource of the set of channel state information reference signal resources associated with a group of two or more transmission and reception points of the plurality of transmission and reception points, wherein the each channel state information reference signal resource is associated with a set of ports corresponding to the group of two or more transmission and reception points.

12. transmitting the control signaling indicating the channel measurement resource configuration, 12. The method of claim 11, comprising transmitting the control signaling indicating the channel measurement resource configuration identifying a second respective channel state information reference signal resource of the set of channel state information reference signal resources associated with a transmission / reception point of the plurality of transmission / reception points, the second respective channel state information reference signal resource being associated with a second set of ports corresponding to the transmission / reception point, the set of ports being associated with a first quantity of ports, and the second set of ports being associated with a second quantity of ports different from the first quantity of ports.

13. transmitting the control signaling indicating the channel measurement resource configuration, 10. The method of claim 9, comprising transmitting the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, the time resources being associated with one communication direction.

14. receiving the coherent joint transmission channel measurement report; 10. The method of claim 9, comprising receiving, in a discontinuous reception mode, the coherent joint transmission channel measurement report, the coherent joint transmission channel measurement report being received based at least in part on transmitting each channel state information reference signal resource from the set of channel state information reference signal resources within a same active time of the discontinuous reception mode.

15. receiving the coherent joint transmission channel measurement report; 10. The method of claim 9, comprising receiving the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmitting and receiving point among the plurality of transmitting and receiving points for coherent joint transmission, the coherent joint transmission channel measurement report for the hypothesis being received based at least in part on the UE receiving each channel state information reference signal resource associated with the hypothesis from the set of channel state information reference signal resources within a same active time of a discontinuous reception mode of the UE.

16. 16. The method of claim 15, wherein the hypothesis is other than the second hypothesis in which the UE is unable to receive at least one channel state information reference signal resource associated with the second hypothesis from the set of channel state information reference signal resources within the same active time of the discontinuous reception mode.

17. A wireless communication device, comprising: Memory and A transceiver; and at least one processor of a user equipment (UE) coupled to the memory and the transceiver, the at least one processor comprising: transmitting, via the transceiver to a network entity, an indication of the UE's capability to support channel measurement resources including two or more channel state information reference signal resources for coherent joint transmission channel state information reporting for multiple transmission and reception points; receiving control signaling from the network entity via the transceiver indicating a channel measurement resource configuration that identifies a set of channel state information reference signal resources for coherent joint transmission channel state information reporting for the plurality of transmitting and receiving points, the channel measurement resource configuration being based at least in part on the capability of the UE to support the channel measurement resources including two or more channel state information reference signal resources; 12. An apparatus configured to transmit, to the network entity via the transceiver, a coherent joint transmission channel measurement report determined based at least in part on the channel measurement resource configuration of the set of channel state information reference signal resources.

18. The at least one processor 20. The apparatus of claim 17, further configured to receive the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including two or more channel state information reference signal resources each associated with a different quantity of ports.

19. The at least one processor 18. The apparatus of claim 17, further configured to receive the control signaling indicating the channel measurement resource configuration identifying a respective channel state information reference signal resource of the set of channel state information reference signal resources associated with a group of two or more transmission and reception points of the plurality of transmission and reception points, wherein the respective channel state information reference signal resource is associated with a set of ports corresponding to the group of two or more transmission and reception points.

20. The at least one processor 20. The apparatus of claim 19, further configured to receive the control signaling indicating the channel measurement resource configuration identifying a second respective channel state information reference signal resource of the set of channel state information reference signal resources associated with a transmission / reception point of the plurality of transmission / reception points, the second respective channel state information reference signal resource being associated with a second set of ports corresponding to the transmission / reception point, the set of ports being associated with a first quantity of ports, and the second set of ports being associated with a second quantity of ports different from the first quantity of ports.

21. The at least one processor 18. The apparatus of claim 17, further configured to receive the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, the time resources being associated with one communication direction.

22. The at least one processor 18. The apparatus of claim 17, further configured to: transmit, in a discontinuous reception mode, the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmitting and receiving point among the plurality of transmitting and receiving points for coherent joint transmission, the coherent joint transmission channel measurement report for the hypothesis being transmitted based at least in part on receiving each channel state information reference signal resource associated with the hypothesis from the set of channel state information reference signal resources within a same active time in the discontinuous reception mode.

23. 23. The apparatus of claim 22, further comprising: in the discontinuous reception mode, refraining from transmitting a second coherent joint transmission channel measurement report associated with the second hypothesis used to select a transmission / reception point among the plurality of transmission / reception points for coherent joint transmission based, at least in part, on the UE's failure to receive at least one channel state information reference signal resource associated with a second hypothesis from the set of channel state information reference signal resources within the same active time of the discontinuous reception mode.

24. A wireless communication device, comprising: Memory and at least one processor of a network entity coupled to the memory, the at least one processor: receiving an indication of a user equipment (UE) capability to support channel measurement resources including two or more channel state information reference signal resources for coherent joint transmission channel state information reporting for multiple transmission and reception points; transmit control signaling indicating a channel measurement resource configuration for the UE that identifies a set of channel state information reference signal resources for coherent joint transmission channel state information reporting for the plurality of transmission and reception points, the channel measurement resource configuration being based at least in part on the capability of the UE to support the channel measurement resources including two or more channel state information reference signal resources; An apparatus configured to receive a coherent joint transmission channel measurement report based at least in part on the channel measurement resource configuration of the set of channel state information reference signal resources.

25. The at least one processor 25. The apparatus of claim 24, further configured to transmit the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including two or more channel state information reference signal resources each associated with a different quantity of ports.

26. The at least one processor 25. The apparatus of claim 24, further configured to: transmit the control signaling indicating the channel measurement resource configuration identifying each channel state information reference signal resource in the set of channel state information reference signal resources associated with a group of two or more transmission and reception points of the plurality of transmission and reception points, wherein the each channel state information reference signal resource is associated with a set of ports corresponding to the group of two or more transmission and reception points.

27. The at least one processor 27. The apparatus of claim 26, further configured to: transmit the control signaling indicating the channel measurement resource configuration identifying a second respective channel state information reference signal resource of the set of channel state information reference signal resources associated with a transmission / reception point of the plurality of transmission / reception points, the second respective channel state information reference signal resource being associated with a second set of ports corresponding to the transmission / reception point, the set of ports being associated with a first quantity of ports, and the second set of ports being associated with a second quantity of ports different from the first quantity of ports.

28. The at least one processor 25. The apparatus of claim 24, further configured to transmit the control signaling indicating the channel measurement resource configuration identifying a set of the channel state information reference signal resources including time resources including a first time resource, a last time resource, and time resources between the first time resource and the last time resource in one or more consecutive slots, the time resources being associated with one communication direction.

29. The at least one processor 25. The apparatus of claim 24, further configured to receive the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmitting and receiving point among the plurality of transmitting and receiving points for coherent joint transmission, the coherent joint transmission channel measurement report for the hypothesis being received based at least in part on the UE receiving each channel state information reference signal resource associated with the hypothesis from the set of channel state information reference signal resources within a same active time of a discontinuous reception mode of the UE.

30. 30. The apparatus of claim 29, wherein the hypothesis is other than the second hypothesis in which the UE is unable to receive at least one channel state information reference signal resource associated with the second hypothesis from the set of channel state information reference signal resources within the same active time of the discontinuous reception mode.

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