Channel state information configuration for joint transmission from multiple transmit-receive points

Abstract

Methods, systems, and devices for wireless communication are described that support configuring channel measurement resources (CMR) for channel state information (CSI) reporting for coherent joint transmission (CJT) via multiple transmit receive points (TRPs). A user equipment (UE) may send, to a network entity, an indication of a capability of the UE to support a CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the indicated capabilities of the UE, the network entity may transmit control signaling indicating a CMR configuration, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for the plurality of TRPs. Based on the CMR configuration, the UE may send a CJT CSI report for the plurality of TRPs to a network entity, where the CJT CSI report may be determined based on the CMR configuration.

Description

Technical Field

[0001] The following relates to wireless communications, including channel state information (CSI) configuration for joint transmission from multiple transmit receive points (TRPs). Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support 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, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may use 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). A wireless multiple access communication system may include one or more base stations, each of which supports wireless communication for a communication device, which may be referred to as a user equipment (UE).

[0003] In some cases, the UE may communicate with one or more transmit-receive points (TRPs), each of which may be a corresponding instance of a network entity or a portion thereof. In some cases, multiple TRPs may coordinate transmissions to the UE. Summary of the invention

[0004] The described techniques relate to improved methods, systems, devices, and apparatuses that support channel state information (CSI) configuration for joint transmission 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 transmission (CJT) via multiple TRPs. For example, in order to support configuring CMRs for CJT via multiple TRPs (e.g., for CSI reporting for CJT via multiple TRPs), a user equipment (UE) may send an indication of the UE's ability to support CMRs to a network entity (e.g., a TRP, another network entity), the CMRs including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs.

[0005] Based on the indicated capabilities of the UE, a network entity (e.g., a TRP or other network entity) may determine a CMR configuration for CJT of the UE. The network entity may send control signaling indicating the CMR configuration to the UE, wherein 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-RS from one or more TRPs, and may measure resources associated with the one or more CSI-RS. Based on one or more measurements performed by the UE, the UE may send CJT CSI reports for multiple TRPs to a network entity (e.g., a TRP, another network entity), wherein the CJT CSI reports may be determined based on the CMR configuration. Based on the CSI reports from the UE, multiple TRPs may perform CJT to send one or more messages to the UE.

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

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

[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for sending an indication of the UE's ability to support CMR to a network entity, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; means for receiving control signaling indicating a CMR configuration from the network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration based on the UE's ability to support the CMR including two or more CSI-RS resources; and means for sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to the network entity.

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

[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 operations, features, components, or instructions for receiving control signaling indicating a CMR configuration, the control signaling identifying a CSI-RS resource set including two or more CSI-RS resources each associated with a different number 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 operations, features, components, or instructions for receiving control signaling indicating a CMR configuration, the control signaling identifying corresponding CSI-RS resources in a CSI-RS resource set associated with a group of two or more TRPs in a plurality of TRPs, the corresponding CSI-RS resources being associated with a set of ports corresponding 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 operations, features, components, or instructions for receiving control signaling indicating a CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in a CSI-RS resource set associated with a TRP in a plurality of TRPs, the corresponding CSI-RS resource being associated with a second set of ports corresponding to the TRP, wherein the set of ports may be associated with a first number of ports and the second set of ports may be associated with a second number of ports different from the first number 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 operations, features, components, or instructions for receiving control signaling indicating a CMR configuration, wherein the control signaling identifies a CSI-RS resource set including time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, the time resource being associated with a communication direction.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a CJT channel measurement report may include operations, features, components, or instructions for sending a CJT channel measurement report in a discontinuous reception mode, wherein the CJT channel measurement report is sent based on receiving each CSI-RS resource from a CSI-RS resource set within the same active time of the discontinuous reception mode.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending a CJT channel measurement report may include operations, features, components, or instructions for sending a CJT channel measurement report associated with a hypothesis for selecting a TRP from multiple TRPs for CJT in a discontinuous reception mode, wherein the CJT channel measurement report for the hypothesis may be sent based on receiving each CSI-RS resource associated with the hypothesis from a CSI-RS resource set during a 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 operations, features, components, or instructions for suppressing sending a second CJT channel measurement report associated with a second hypothesis for selecting a TRP from multiple TRPs for CJT based on the UE failing to receive at least one CSI-RS resource associated with the second hypothesis for selecting the TRP from the plurality of TRPs for CJT from a set of CSI-RS resources within the same active time of a discontinuous reception mode.

[0017] A method for wireless communication at a network entity is described. The method may include: receiving an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration based on the UE's ability to support the CMR including two or more CSI-RS resources; and receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0018] An apparatus for wireless communication is described. The apparatus may include: a memory; and at least one processor of a network entity, the at least one processor being coupled to the memory. The at least one processor is configured to: receive an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; send control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration being based on the UE's ability to support the CMR including two or more CSI-RS resources; and receive a CJT channel measurement report of the CMR configuration based on the CSI-RS resource set.

[0019] Another apparatus for wireless communication at a network entity is described. The apparatus may include: a component for receiving an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; a component for sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a set of CSI-RS resources for CJT CSI reporting for the multiple TRPs, the CMR configuration based on the UE's ability to support the CMR including two or more CSI-RS resources; and a component for receiving a CJT channel measurement report of the CMR configuration based on the set of CSI-RS resources.

[0020] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to perform the following operations: receiving an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration based on the UE's ability to support the CMR including two or more CSI-RS resources; and receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending control signaling indicating a CMR configuration may include operations, features, components, or instructions for sending control signaling indicating a CMR configuration, the control signaling identifying a CSI-RS resource set, the CSI-RS resource set including two or more CSI-RS resources each associated with a different number of ports.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending control signaling indicating a CMR configuration may include operations, features, components, or instructions for sending control signaling indicating a CMR configuration, the control signaling identifying corresponding CSI-RS resources in a CSI-RS resource set associated with a group of two or more TRPs in a plurality of TRPs, the corresponding CSI-RS resources being 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, sending control signaling indicating a CMR configuration may include operations, features, components, or instructions for sending control signaling indicating a CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in a CSI-RS resource set associated with a TRP in a plurality of TRPs, the corresponding CSI-RS resource being associated with a second set of ports corresponding to the TRP, wherein the set of ports may be associated with a first number of ports and the second set of ports may be associated with a second number of ports different from the first number of ports.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending control signaling indicating a CMR configuration may include operations, features, components, or instructions for sending control signaling indicating a CMR configuration, wherein the control signaling identifies a CSI-RS resource set including time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, the time resource being associated with a communication direction.

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

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving a CJT channel measurement report may include operations, features, components, or instructions for receiving a CJT channel measurement report associated with a hypothesis for selecting a TRP from multiple TRPs for CJT, wherein the CJT channel measurement report may be received based on the UE receiving at least one CSI-RS for each CSI-RS resource from a CSI-RS resource set that may be associated with the hypothesis during a same active time of a non-continuous reception mode of the UE.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the assumption may be different from a second assumption that the UE fails to receive at least one CSI-RS resource from the CSI-RS resource set that may be associated with the second assumption during the same active time of the discontinuous reception mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 An example of a wireless communication system supporting channel state information (CSI) configuration for joint transmission from multiple transmit receive points (TRPs) according to one or more aspects of the present disclosure is illustrated.

[0029] Figure 2A and Figure 2B An example of a transmission scheme supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated.

[0030] Figure 3 An example of a resource scheme supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated.

[0031] Figure 4An example of a wireless communication system supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated.

[0032] Figure 5 An example of a resource scheme supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated.

[0033] Figure 6 An example of a process flow supporting CSI configuration for joint transmission from multiple TRPs in accordance with one or more aspects of the present disclosure is illustrated.

[0034] Figure 7 and Figure 8 A block diagram of a device supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0035] Fig. 9 A block diagram of a communication manager supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0036] Fig.10 A diagram of a system including devices supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0037] Fig.11 and Fig.12 A block diagram of a device supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0038] Fig.13 A block diagram of a communication manager supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0039] Fig.14 A diagram of a system including devices supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown.

[0040] Figures 15 to 18 A flowchart illustrating a method for supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0041] A user equipment (UE) may communicate with one or more transmit receive points (TRPs) in an uplink, a downlink, or both. In some cases, one or more TRPs may include multiple TRPs that may communicate with the UE jointly (e.g., concurrently). For example, multiple TRPs may send joint downlink information to the UE, such as via coherent joint transmission (CJT). The CJT from the TRP may be based on or associated with CSI feedback reported by the UE, for example, based on one or more channel measurement resources (CMRs) and / or channel state information (CSI) configurations. Based on the CSI and / or CMR configuration, the UE may determine the number of computational resources associated with performing CSI measurements and / or reporting (e.g., the number of CSI-RS resources or ports for measuring CSI reference signals (CSI-RS)). However, in some cases, the CMR may not be configured for CJT via multiple TRPs (e.g., other transmissions may be supported, but may not be configured to support CJT via multiple TRPs).

[0042] The present disclosure provides techniques for configuring a CMR (e.g., for CSI reporting) for CJT via multiple TRPs. For example, to support configuring a CMR for CJT via multiple TRPs (e.g., for CSI reporting via CJT of multiple TRPs), a UE may report the ability 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 corresponding numbers of ports may be configured within a resource set for CJT. For example, two or more TRPs may be included in a resource group (e.g., a TRP group) associated with one or more corresponding CSI-RS resources, wherein the CSI-RS resources are associated with a set of ports corresponding to the ports of the TRPs in the group.

[0043] The UE may send an indication to a network entity (e.g., a TRP, another network entity) of the UE's capability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the indicated capability of the UE, the network entity (e.g., the TRP or other network entity) may determine a CMR configuration for CJT of the UE. The network entity may send control signaling to the UE indicating the CMR configuration, wherein the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs.

[0044] Based on the CMR configuration, the UE may receive one or more CSI-RS from one or more TRPs and may measure resources associated with the one or more CSI-RS. Based on one or more measurements performed 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, multiple TRPs may perform CJT to send one or more messages to the UE.

[0045] Various aspects of the present disclosure are first described in the context of a wireless communication system. Various aspects of the present disclosure are further illustrated and described by and with reference to transmission schemes, resource schemes, process flows, apparatus diagrams, system diagrams, and flow charts associated with CSI configurations for joint transmission from multiple TRPs.

[0046] Figure 1 An example of a wireless communication system 100 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated. 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 long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, a new radio (NR) network, or a network operating according to other systems and radio technologies (including future systems and radio technologies not explicitly mentioned herein).

[0047] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may include devices in 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 names. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area), and the UE 115 and the network entity 105 may establish one or more communication links 125 over the coverage area. The coverage area 110 may be an example of a geographic area, and the network entity 105 and the UE 115 may support signal communications over the geographic area according to one or more radio access technologies (RATs).

[0048] 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 stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1 . The UEs 115 described herein may be capable of supporting communication with various types of devices, such as Figure 1 Communicate with other UEs 115 or network entities 105) as shown.

[0049] 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 suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the 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 UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from the second node.

[0050] In some examples, the network entities 105 may communicate with the core network 130, or with each other, or 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 S1, N2, N3, or other interface protocols). In some examples, the network entities 105 may communicate with each other directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130) via the backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). 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 links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0051] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, an NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0052] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that 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., a cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of the following: 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 (near RT RIC), a non-real-time RIC (non-RT 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 the decomposed RAN architecture may be co-located, 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 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0053] The functional split between CU 160, DU 165, and RU 170 is flexible and can support different functionalities, depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack can be employed between CU 160 and DU 165, such that CU 160 can support one or more layers of a protocol stack and DU 165 can support one or more different layers of a protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality 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, and the one or more DUs 165 or RUs 170 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) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may 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 split between CU 160 and DU 165 or between DU 165 and RU 170 may be within the protocol layer (e.g., some functions of the protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by the other of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities 105 that communicate via those communication links.

[0054] In some wireless communication systems (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing 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 host entities or IAB hosts. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a host network entity 105 (e.g., a host base station 140). One or more host network entities 105 (e.g., IAB hosts) may communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB host. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) 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., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0055] In the case where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support CSI configuration for joint transmission from multiple TRPs as described herein. For example, some operations described as being performed by a 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 decomposed RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0056] UE 115 may include or may 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, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may 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, UE 115 may include or may 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 communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0057] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0058] The UE 115 and the network entity 105 may wirelessly communicate with each other via 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 collection of RF spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates 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 for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between a device and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send," "receive," or "communicate" when referring to the network entity 105 may refer to any portion of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0059] The signal waveform transmitted via the carrier wave may be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system using 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, in which case the symbol period and the subcarrier spacing may be inversely related. 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), so that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers, beams), and the use of multiple spatial resources may increase the data rate or data integrity of the communication with the UE 115.

[0060] The time interval for the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources 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).

[0061] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, the time slot may also be divided into multiple mini time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0062] A subframe, a slot, a mini-slot, or a 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., in bursts of shortened TTIs (sTTIs)).

[0063] Physical channels may be multiplexed using carriers for communication according to various techniques. For example, physical control channels and physical data channels may be multiplexed via downlink carriers for signaling using 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 extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a 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 in one or more aggregation levels arranged in a cascaded manner. The aggregation level of 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 transmitting control information to a plurality of UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0064] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile 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, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0065] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a subcarrier or resource block (RB) set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0066] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). The UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private communication or group communication, and may be supported by one or more services (such as push-to-talk, video, or data). Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety applications or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency are used interchangeably herein.

[0067] In some examples, a UE 115 may be configured to support communication directly 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 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support various 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 of the coverage area 110 of the network entity 105, or may otherwise be unable or not 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, in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be conducted between UEs 115 without involving network entity 105.

[0068] 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 (5GC), which may include at least one control plane entity for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets or interconnecting to an external network (e.g., a serving gateway (S-GW)), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered via the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to an IP service 150 for one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0069] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range is approximately one decimeter to one meter. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0070] The wireless communication system 100 may utilize both licensed RF spectrum bands and unlicensed RF spectrum bands. For example, the wireless communication system 100 may employ 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. When operating using unlicensed RF spectrum bands, devices such as network entities 105 and UE 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands may be based on carrier aggregation configuration in combination 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, and the like.

[0071] 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 technologies 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 co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the network entity 105 may be located at different geographical 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 for 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 sent via the antenna ports.

[0072] The network entity 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such technology may be referred to as spatial multiplexing. Multiple signals may be, for example, sent by a transmitting device 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 for channel measurement and reporting. MIMO technologies include: single-user MIMO (SU-MIMO), in which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0073] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a sender device or a receiver 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 sender device and the receiver device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the sender device or the receiver device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the sender device or the receiver device or relative to some other orientation).

[0074] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly to communicate via logical channels. The MAC layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also implement error detection techniques, error correction techniques, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer may provide the establishment, configuration, and maintenance of an RRC connection that supports a radio bearer for user plane data between the UE 115 and the network entity 105 or the core network 130. The PHY layer may map a transport channel to a physical channel.

[0075] UE 115 may send an indication of the capability of UE 115 to support CMR to a network entity (e.g., a TRP, another network entity), the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the indicated capability of UE 115, network entity 105 (e.g., a TRP or other network entity 105) may determine a CMR configuration for CJT of UE 115. Network entity 105 may send control signaling indicating the CMR configuration to UE 115, wherein the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the CMR configuration, UE 115 may receive one or more CSI-RS from one or more TRPs, and may measure resources associated with the one or more CSI-RS. Based on one or more measurements performed by the UE 115, the UE 115 may send a CJT CSI report for multiple TRPs to a network entity 105 (e.g., a TRP, another network entity 105), where the CJT CSI report may be determined based on a CMR configuration. Based on the CSI report from the UE 115, the multiple TRPs may perform CJT to send one or more messages to the UE 115.

[0076] Figure 2A and Figure 2B Examples of transmission schemes 200-a and 200-b supporting CSI configurations for joint transmission from multiple TRPs according to one or more aspects of the present disclosure are illustrated. Transmission schemes 200-a and 200-b may implement or be implemented by one or more aspects of the 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 UE 115-a and UE 115-b. These devices may be reference Figure 1 Examples of corresponding devices described. Transmission schemes 200-a and 200-b may represent schemes for one or more joint transmissions from multiple TRPs to corresponding UEs 115 (e.g., UE 115-a, UE 115-b). Although Figure 2A and Figure 2B The examples illustrated and described herein may be associated with two TRPs, but the same examples may also be extended to any number of multiple TRPs. For example, in some cases, the examples herein may be applicable to any number of multiple TRPs up to four TRPs (e.g., or another number of TRPs).

[0077] In some cases, such as Figure 2AAs illustrated, the TRPs may perform non-coherent joint transmissions to UE 115-a. In such cases, data (e.g., data X) for transmission to UE 115-a may be pre-coded separately by two or more TRPs (such as TRP A and TRP B). Each TRP may be associated with a corresponding number of ports 205 (e.g., four ports 205) and may each use one or more different corresponding 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 UE 115-a). Such transmissions may be based on spatial division multiplexing (SDM), for example, based on transmissions using different spatial layers.

[0078] Each TRP may also be associated with a corresponding pre-decoder for the data sent by that TRP. For example, TRP A may use pre-decoder V A For data X A Similarly, TRP B can use pre-decoder V B For data X B The pre-coding may be performed, and the data may be associated with two spatial layers. The pre-coder and the spatial layer may be configured for joint transmission from TRP A and TRP B. After pre-coding the corresponding data (e.g., pre-coding separately), TRP A and TRP B may send (e.g., concurrently send) the pre-coded data to UE 115-a via the corresponding ports 205 (e.g., port 205-a and port 205-b) of the TRP. The pre-coding of the data sent by TRP A and TRP B may be represented by an equation such as equation (1):

[0079]

[0080] Where V A X A Represents the pre-decoded data sent by TRP A, V B X B Represents the pre-decoded data sent by TRP B, V A represents the pre-coding matrix (e.g., pre-decoder) used by TRP A, V B represents the pre-coding matrix (e.g., pre-decoder) used by TRP B, X A represents a data vector including data to be sent by TRP A via a layer, and X B Represents a data vector comprising data to be sent by TRP B through two layers.

[0081] In some cases, such as Figure 2BAs illustrated, the TRPs may perform CJT to UE 115-b. In such cases, data (e.g., data X) for transmission to UE 115-b may be jointly precoded by two or more TRPs (such as TRP A and TRP B), where the joint precoding may support phase coherence for joint transmission. Each TRP may be associated with a corresponding 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).

[0082] For CJT, each TRP may be associated with a corresponding predecoder for jointly precoding the data sent by the TRP. For example, TRP A may use predecoder V A Precode data X, which may be associated with two spatial layers. Similarly, TRP B may use precoder V B The same data X is pre-decoded, which may also be associated with two spatial layers. A and V B The pre-coding may be based on or use a joint codebook (e.g., using the same or similar pre-coders, such as using a joint spatial dimension, a joint frequency dimension, or both), or may be based on or use a separate codebook (e.g., a semi-separate codebook, such as a separate codebook in terms of the spatial dimension, the frequency dimension, or both). The pre-coders and spatial layers may be configured for CJT from TRP A and TRP B. After pre-coding the data (e.g., pre-coding jointly), TRP A and TRP B may send (e.g., concurrently send, coherently send) the pre-coded data to UE 115-b via respective ports 205 of the TRPs. Pre-coding of the data sent by TRP A and TRP B may be represented by an equation such as equation (2):

[0083]

[0084] Where V A X represents the pre-decoded data sent by TRP A, V B X represents the pre-decoded data sent by TRP B, V A represents the pre-coding matrix (e.g., pre-decoder) used by TRP A, V B represents a precoding matrix (eg, precoder) used by TRP B, and X represents a data vector including data to be sent by TRP B and TRP A through two layers.

[0085] In some cases, CJTs from multiple TRPs may support a larger number of ports 205 for CJTs in some frequency bands (e.g., lower frequency bands), where the number of ports 205 may be associated with the distributed TRPs and / or panels. For example, a single TRP and / or panel with a larger number of ports 205 (e.g., 32 ports 205) may have an antenna array size that may be too large for practical deployment. Therefore, a distributed TRP and / or panel with a smaller antenna array size may be used in conjunction with CJT to communicate with UE 115.

[0086] 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 transmissions may be associated with backhaul connectivity and synchronization across multiple TRPs and the same or similar number of antenna ports 205 (e.g., for each TRP) across multiple TRPs. To perform CJT communications across multiple TRPs, multiple TRPs may perform one or more CSI reporting techniques with a UE 115 (e.g., UE 115-b). The CSI reports may be associated with configured CSI-RS resources, which may be associated with a certain number of ports 205 (e.g., 32 ports 205) for each resource.

[0087] The UE 115 may send an indication of the capability of the UE 115 to support CMR to a network entity 105 (e.g., a TRP, another network entity 105), the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the indicated capability of the UE 115, the network entity 105 (e.g., the TRP or other network entity 105) may determine a CMR configuration for CJT of the UE 115. The network entity 105 may send control signaling indicating the CMR configuration to the UE 115, wherein the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs. Based on the CMR configuration, the UE 115 may receive one or more CSI-RS from one or more TRPs, and may measure resources associated with the one or more CSI-RS. Based on one or more measurements performed by the UE 115, the UE 115 may send a CJT CSI report for multiple TRPs to a network entity 105 (e.g., a TRP, another network entity 105), where the CJT CSI report may be determined based on a CMR configuration. Based on the CSI report from the UE 115, the multiple TRPs may perform CJT to send one or more messages to the UE 115.

[0088] Figure 3An example of a resource scheme 300 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated. The resource scheme 300 can implement or be implemented by one or more aspects of the wireless communication system 100 or the transmission schemes 200-a and 200-b. For example, the resource scheme 300 can be implemented by two or more TRPs (e.g., two or more network entities 105, their respective parts) and UE 115. These devices can be reference Figures 1 to 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 a UE 115 (e.g., UE 115-a, UE 115-b). Figure 3 The examples illustrated and described herein may be associated with two TRPs, but the same examples may also be extended to any number of multiple TRPs. For example, in some cases, the examples herein may be applicable to any number of multiple TRPs up to four TRPs (e.g., or another number of TRPs).

[0089] In some cases, the UE 115, one or more of the TRPs, or both may construct one or more assumptions for a joint transmission. For example, each of the one or more assumptions may be associated with a corresponding number of TRPs to be used for a joint transmission (e.g., CJT) and which TRPs are to be used for the joint transmission. A CSI report (e.g., a CSI and / or CMR configuration) may be configured with one or more single TRP assumptions, one or more multi-TRP assumptions, or both. For the multi-TRP assumption, the UE 115 may report two precoding matrix indicators (PMIs), two rank indicators (RIs), and one channel quality indicator (CQI). In some cases, the one or more assumptions may be applicable to a type I codebook (e.g., a single panel codebook).

[0090] Resource scheme 300 may instantiate (e.g., K s The CSI-RS resource set 305 may include a first CSI-RS resource group 310-a configured for TRP 1 (e.g., K1 resources) and a second CSI-RS resource group 310-b configured for TRP 2 (e.g., K2 resources). Each resource of the CSI-RS resource group 310 may be referred to as a channel measurement resource (CMR) and may be associated with an assumption for a single TRP transmission scenario, a multi-TRP transmission scenario, or both.

[0091] In one CSI-RS resource set 305 configured with a single TRP assumption and a multiple TRP assumption, two CSI-RS resource groups 310 (e.g., CMR groups) may be configured and may correspond to two TRPs (e.g., TRP 1 and TRP 2). At most N pairs (e.g., N is equal to 1 or 2) of CMRs may be configured for the multiple TRP assumption. Figure 3 In the illustrated example, two pairs (e.g., N=2) of CMRs may be configured. A total of M single TRP hypotheses (e.g., CMRs) may also be configured for a TRP (e.g., for two TRPs), where M may be equal to the sum of the M1 hypotheses associated with TRP 1 (e.g., M1 CMRs) and the M2 hypotheses associated with TRP 2 (e.g., M2 CMRs). Depending on how the resources are configured, the M hypotheses may or may not include 2N pairs of CMRs.

[0092] UE 115 may use a CSI-RS resource indicator (CRI) to report single TRP assumptions and multi-TRP assumptions. In a first mode (e.g., mode 1), UE 115 may report one multi-TRP CSI assumption (e.g., the determined best assumption) and a certain number (e.g., X) of single TRP assumptions (e.g., the determined best assumption). The number of single TRP assumptions (e.g., X) may be configured via RRC (e.g., configured as values ​​0, 1, 2). If the number of single TRP assumptions is equal to 2 (e.g., X=2), the first reported single TRP assumption may be associated with a first CMR group (e.g., CSI-RS resource group 310-a), and the second reported single TRP assumption may be associated with a second CMR group (e.g., CSI-RS resource group 310-b). In a second mode (e.g., mode 2), UE 115 may report one CSI among all configured CSI assumptions (e.g., all M+N assumptions).

[0093] The number of bits used for CRI reporting (e.g., reported in CSI Part 1) in Mode 1 may be based on the number of single TRP assumptions (e.g., X). For example, if X=0, then one CRI may be used for reporting, where the CRI may include If X=1, two CRIs can be used for reporting, where the first CRI can include bits, and the second CRI may include If X=2, three CRIs may be used for reporting, where the first CRI may include bit, the second CRI may include bits, and the third CRI may include In Mode 2, the number of bits used for CRI reporting (e.g., reported in CSI Part 1) can be included in one CRI.

[0094] One or more of the hypothetical examples described herein may be applicable to non-coherent joint transmission, which may be associated with a type I codebook. One or more other hypothetical examples may also be configured for or applicable to CJT, which may be associated with a type II codebook. In some cases, for a CJT CMR configuration, each CMR may be configured with one CSI-RS resource, where the CMR may be associated with a maximum number of ports (e.g., 32 ports). In some other cases, for a CJT CMR configuration, each CMR may be configured with more than one CSI-RS resource (e.g., K resources), where each CMR may be associated with the same number of ports (e.g., representing K TRPs).

[0095] In a CJT CMR configuration, a certain number of multiple TRPs (e.g., N TRPs) may collaborate for PMI reporting, where a subset of the N TRPs may be selected or determined for CJT. In some cases, the number of the 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 associated with the N TRPs may be configured (e.g., by the network entity 105) via higher layer signaling (e.g., RRC signaling). In some such cases, CJT may support one transmission hypothesis (e.g., and may not support more than one hypothesis).

[0096] In some cases, a number of N TRPs (e.g., a number of cooperative TRPs) may be selected by the UE 115 and may be reported as part of the CSI report, where N may be greater than or equal to 1 and less than or equal to the total number (e.g., maximum number) of available (e.g., configured) TRPs (e.g., less than or equal to N). TRP , the maximum number of TRPs configured by network entity 105). UE 115 may also report which TRPs were selected among the N TRPs. In some such cases, one transmission hypothesis or multiple transmission hypotheses (e.g., with the same N value or different N values) may be supported. If the number of N TRPs is configured for UE 115 or selected by UE 115, UE 115 may select the number of TRPs selected based on 2 NTRP -1 hypothesis (e.g., N TRP =4, 15 hypotheses) to measure CSI. An example of such hypotheses can be shown in Table 1, which can represent different TRP transmission combinations for four TRPs: TRP A, TRP B, TRP C, and TRP D.

[0097]

[0098]

[0099] Table 1

[0100] In some cases, UE 115 may report CSI corresponding to a certain number of transmission hypotheses (e.g., K hypotheses). In some such cases, the number of N TRPs may be configured (e.g., by network entity 105) via higher layer signaling (e.g., RRC signaling) and one or more parameters of the N TRPs. The K transmission hypotheses may be configured (e.g., by network entity 105) or may be reported by UE 115. If UE 115 reports K transmission hypotheses, UE 115 may report CSI corresponding to 2 NTRP - A configured subset of a set of 1 hypotheses (eg, configured by the network entity 105) to measure CSI.

[0101] Based on the CSI and / or CMR configuration, the UE 115 may determine the amount of computational resources associated with performing CSI measurements and / or reporting (e.g., the number of active CSI-RS resources or ports, the amount of occupied computational resources, such as CSI-RS resources or ports, etc.). CPU ). However, in some cases, a CMR may not be configured for CJT via multiple TRPs (e.g., other transmissions may be supported but may not be configured to support CJT via multiple TRPs).

[0102] The present disclosure provides techniques for configuring CMRs (e.g., for CSI reporting) for CJT via multiple TRPs. For example, to support configuring CMRs for CJT via multiple TRPs (e.g., for CSI reporting via CJT for multiple TRPs), the UE 115 may report the ability to support two or more CSI-RS resources within a CSI-RS resource set 305. In some cases, CSI-RS resources associated with different corresponding numbers of ports may be configured within a CSI-RS resource set 305 for 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 corresponding CSI-RS resources, wherein the CSI-RS resources are associated with a set of ports corresponding to the ports of the TRPs in the CSI-RS resource group 310.

[0103] Figure 4An example of a wireless communication system 400 that supports CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated. The wireless communication system 400 can implement or be implemented by one or more aspects of the wireless communication system 100, the transmission schemes 200-a and 200-b, or the resource scheme 300. For example, the wireless communication system 400 may include TRP 405-a, TRP 405-b, and UE 115-c, which may be reference Figures 1 to 3 Examples of corresponding devices described. Figure 4 The examples illustrated and described herein may be associated with two TRPs, but the same examples may also be extended to any number of multiple TRPs. For example, in some cases, the examples herein may be applicable to any number of multiple TRPs up to four TRPs (e.g., or another number of TRPs).

[0104] As reference Figure 2B As described, TRP 405-a and TRP 405-b can communicate with UE 115-c using CJT. For example, data (e.g., data X) for transmission to UE 115-c can be jointly pre-coded by TRP 405-a and TRP 405-b, where the joint pre-coding can support phase coherence for joint transmission. Each TRP 405 can be associated with a corresponding number of ports (e.g., four ports), and can each use one or more of the same layers for transmission. For example, two layers can be used for transmission from TRP 405-a, and the same two layers can be used for transmission from TRP 405-b (e.g., a total of two layers are used for transmission to UE 115-c).

[0105] Each TRP 405 may be associated with a respective predecoder for jointly predecoding data sent by TRP 405-a and TRP 405-b. For example, TRP 405-a may use predecoder V A Pre-decode data X, which may be associated with two spatial layers. Similarly, TRP 405-b may use pre-decoder V B The same data X is precoded, which may also be associated with two spatial layers. The precoders and spatial layers may be configured for CJT from TRP 405-a and TRP 405-b. After precoding the data (e.g., jointly precoding), TRP 405-a and TRP 405-b may transmit (e.g., concurrently transmit, coherently transmit) the precoded data to UE 115-c via respective ports of TRP 405.

[0106] The CJT from TRP 405-a and TRP 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 assumptions, such as reference Figure 3 Based on one or more CMR and / or CSI configurations, the UE 115-c may determine an amount of computing resources (e.g., CPU ). However, as referenced Figure 3 As described, some CMR and / or CSI configurations may not support CJT via multiple TRPs 405 .

[0107] Thus, the UE 115-c may support the use of CMR configurations for CJT via multiple TRPs 405 (e.g., for CSI reporting for CJT via multiple TRPs 405) by reporting an ability to support two or more CSI-RS resources within a CSI-RS resource set. For example, the UE 115-c may send an indication of the UE 115-c's ability to support CMR to a network entity (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105), the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs 405. Based on the indication of the UE 115-c's ability, the network (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105) may determine a CMR configuration for CJT to the UE 115-c. The network (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105) may send control signaling indicating a CMR configuration to UE 115-c, where the control signaling identifies a set of CSI-RS resources for CJT CSI reporting for multiple TRPs 405.

[0108] In some cases, the CSI-RS resources indicated by the CMR configuration may be associated with different corresponding numbers of ports for 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 corresponding CSI-RS resources, where the CSI-RS resources are associated with a set of ports corresponding to the ports of the TRPs in the group.

[0109] Based on the indicated CMR configuration, UE 115-c may receive one or more CSI-RS from TRP 405-a, TRP 405-b, or both, and may measure resources associated with the one or more CSI-RS. Based on one or more measurements performed by UE 115-c, UE 115-c may send a CJT CSI report for multiple TRPs to a network entity (e.g., TRP 405-a, 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 UE 115-c, TRP 405-a, TRP 405-b, one or more other TRPs 405, or any combination thereof may perform CJT to send one or more messages to UE 115-c, as described herein. For example, based on the CSI report, TRP 405-a, TRP 405-b, or one or more other TRPs 405 may determine, select, or configure a corresponding precoder for precoding data and sending it to UE 115-c (e.g., via CJT).

[0110] Figure 5 An example of a resource scheme 500 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated. The resource scheme 500 may implement or be implemented by one or more aspects of the wireless communication system 100 or 400 and 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 reference Figures 1 to 4 Examples of corresponding devices described. Figures 2B to 4 As described, two or more TRPs may communicate with UE 115 using CJT.

[0111] As reference Figure 3 and Figure 4 As described, CJT from two or more TRPs may be based on or associated with CSI feedback reported by UE 115. For example, CJT may be based on CSI feedback and associated assumptions associated with one or more CMRs and / or CSI configurations, as described in reference to Figure 3 and Figure 4 Based on one or more CMRs and / or CSI configurations, UE 115 may determine the number of active resources (e.g., or ports), the number of computing resources (e.g., CPU ) or both.

[0112] In a first example, the CSI-RS resource set 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., for two or more TRPs) configured for the UE 115. In a second example, the CSI-RS resource set 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., may include one respective CSI-RS resource 510 (e.g., an NZP CSI-RS resource 510) for each TRP configured for the UE 115 TRP N of TRPs TRP In a third example, the CSI-RS resource set of the CMR configuration 505 may include more than one CSI-RS resource 510 (e.g., an NZP CSI-RS resource 510) but less than one corresponding CSI-RS resource 510 (e.g., may include a corresponding CSI-RS resource 510 for all NZP CSI-RS resources 510) for each TRP configured for the UE 115. TRP K resources of a TRP, of which 1 <K<N TRP ).

[0113] As reference Figure 4 As described, for CJT CSI reporting for multiple TRPs, the UE 115 may report whether the UE 115 supports one CSI-RS resource 510 (e.g., NZP CSI-RS resource 510) or supports more than one CSI-RS resource 510 for CMR. In some cases, support for at least one CSI-RS resource 510 (e.g., NZP CSI-RS resource 510) may be a mandatory or required UE feature and / or capability (e.g., as mandatory 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 for one or more CSI-RS resources 510.

[0114] In some cases (e.g., when the CMR configuration 505 indicates K CSI-RS resources 510, 1 <K<N TRP), two or more CSI-RS resources 510 each associated with a different number of ports may be configured within a CSI-RS resource set 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 TRP group that shares the same spatial domain and / or frequency domain basis selection reported in the CSI), which may include TRP A and TRP B, and the TRP group 515-a may be associated with the 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 the CSI-RS resource 510-b. The CSI-RS resource 510-a may be associated with a set of ports corresponding to TRP A (e.g., 8 ports) and a set of ports corresponding to TRP B (e.g., 8 ports). 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.

[0115] In another example, in the case of TRP A, TRP B, TRP C, and TRP D, each TRP may be associated with the same number of ports (e.g., 8 ports), and TRP B and TRP C may be defined as a TRP group 515 (e.g., a TRP group that shares the same spatial domain and / or frequency domain basis selection reported in the CSI). The CMR configuration 505 may indicate or include a corresponding CSI-RS resource 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 including TRP B and TRP C. Thus, the CSI-RS resource set configured by the CMR configuration 505 may include three CSI-RS resources 510, wherein the corresponding CSI-RS resources 510 for TRP A and TRP D correspond to a certain number of ports associated with each TRP (e.g., 8 ports), and the CSI-RS resources 510 for TRP B and TRP C may correspond to twice the certain number of ports associated with each TRP (e.g., 16 ports).

[0116] 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 time slot, or in consecutive time slots (e.g., within two time slots that are consecutive in time). The CMR configuration 505 (e.g., or the standard) may additionally indicate that there is no uplink or downlink switching between any 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 communication direction may be maintained).

[0117] In some cases, when operating in a discontinuous reception (DRX) mode, the UE 115 may report CSI reports for multiple TRPs for CJT. For example, the UE 115 may report CSI for a hypothesis of one or more selected TRPs for CJT. In a first example, the UE 115 may not receive any CSI-RS opportunities (e.g., CSI-RS) for any CSI-RS resource associated with a corresponding hypothesis (e.g., CJT for multiple TRPs) within the same DRX active time (e.g., no later than the CSI reference resource time, the cutoff time). In such a case, the UE 115 may discard the report associated with the corresponding hypothesis (e.g., based on a failure to receive the CSI-RS opportunity). In a second example, the UE 115 may receive at least one set of CSI-RS opportunities (e.g., at least one CSI-RS) for each resource associated with a corresponding hypothesis (e.g., a hypothesis associated with TRP A, TRP C, and TRP D) within the same DRX active time (e.g., no later than the CSI reference resource time, the cutoff time). That is, related CSI-RS (such as CSI-RS associated with corresponding hypotheses (e.g., TRP A, TRP C, and TRP D)) may be received at the same DRX active time (e.g., to maintain or support phase continuity). In such cases, UE 115 may perform CSI reporting for the corresponding hypothesis (e.g., may send a CJT CSI report associated with the hypothesis).

[0118] Figure 6An example of a process flow 600 for supporting CSI configuration for joint transmission from multiple TRPs in accordance with one or more aspects of the present disclosure is illustrated. In some examples, the process flow 600 can implement or be implemented by one or more aspects of the wireless communication system 100 or 400 and one or more aspects of the transmission schemes 200-a and 200-b, the resource scheme 300, or the resource scheme 500. For example, the process flow 600 can be implemented by the UE 115-d and the network entity 105-a (e.g., a TRP or other network entity), which can be reference Figures 1 to 5 Examples of UE 115 and network entity 105 (e.g., TRP) are described.

[0119] 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 a different time. For example, some operations may be excluded 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 as performing 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 being performed by network entity 105-a may be performed by another network entity 105, a TRP, or multiple TRPs.

[0120] At 605, the UE 115-d may send an indication to the network entity 105-a of the UE's ability to support CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs (e.g., as described in reference Figures 3 to 5 . described). For example, UE 115-d may send an indication of the ability to support CMRs that include two or more CSI-RS resources in order to support CSI for CJTs from multiple TRPs.

[0121] At 610, the network entity 105-a may send control signaling indicating the CMR configuration to the UE 115-d (e.g., as described in reference to Figures 3 to 5 ), which control signaling identifies a set of CSI-RS resources to be used for CJT CSI reporting for multiple TRPs. For example, the CMR configuration may be based on UE 115-d supporting CMRs including two or more CSI-RS resources (e.g., as described in reference Figures 3 to 5 The configuration may indicate the ability of a CMR to be configured as described in one or more of Figure 5 One or more time resources, or groups or ports associated with the described CSI-RS resource set.

[0122] 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 send one or more CSI-RS to the UE 115-d via a CSI-RS resource set. The one or more CSI-RS may be based on one or more parameters configured or associated with the CMR. Based on the transmission of the one or more CSI-RS, the UE 115-d may measure the CSI-RS resource set (e.g., measure the CSI-RS) for performing CSI reporting (e.g., for CJT CSI reporting for multiple TRPs).

[0123] At 620, the UE 115-d may send a CJT CSI report for a plurality of TRPs determined based on the received CSI-RS (e.g., based on measurements performed by the UE 115-d) to the network entity 105-a. The CJT CSI report may be associated with one or more assumptions for selecting a TRP from the plurality of TRPs for CJT. For example, as described in reference Figure 5 As described, UE 115-d may send a CJT CSI report if at least one CSI-RS is received for each resource associated with the corresponding hypothesis, and may refrain from sending a CJT CSI report if no CSI-RS is received for each resource associated with the corresponding hypothesis.

[0124] At 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 send a CJT (e.g., from multiple TRPs) to the UE 115-d. The CJT may be based on a CJT CSI report sent by the UE 115-d (e.g., one or more parameters for the CJT or one or more TRPs for the CJT, etc. may be based on the CSI report).

[0125] Figure 7 A block diagram 700 of a device 705 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 705 can be an example of aspects of the UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0126] The receiver 710 may provide 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 associated with CSI configurations for 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 collection of multiple antennas.

[0127] The transmitter 715 may provide means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information associated with various information channels (e.g., control channels, data channels, information channels related to CSI configurations for joint transmission from multiple TRPs), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 715 may be co-located with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0128] The communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0129] In some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). 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 that is configured to or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0130] Additionally or alternatively, in some examples, the communication 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 communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0131] In some examples, the communication manager 720 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 710, the transmitter 715, or both. For example, the communication manager 720 can receive information from the receiver 710, transmit information to the transmitter 715, or be integrated with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0132] According to examples as disclosed herein, the communication manager 720 may support wireless communications at a UE. For example, the communication manager 720 may be configured to or otherwise support components for sending an indication of the UE's ability to support CMR to a network entity, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communication manager 720 may be configured to or otherwise support components for receiving control signaling indicating a CMR configuration from a network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The communication manager 720 may be configured to or otherwise support components for sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to the network entity.

[0133] By including or configuring the communication manager 720 according to the examples described herein, the device 705 (e.g., a processor controlling or otherwise coupled to the receiver 710, the transmitter 715, the communication manager 720, or a combination thereof) can support techniques for more efficiently utilizing communication resources. For example, the communication manager 720 can support determining and reporting CSI based on CMR configurations. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, increase communication quality, and increase available power.

[0134] Figure 8A block diagram 800 of a device 805 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 805 can be an example of aspects of the device 705 or UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0135] The receiver 810 may provide 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 for 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 collection of multiple antennas.

[0136] The transmitter 815 may provide means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information associated with various information channels (e.g., a control channel, a data channel, an information channel associated with a CSI configuration for joint transmission from multiple TRPs), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 815 may be co-located with the receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a collection of multiple antennas.

[0137] The device 805 or its various components may be examples of components for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication 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 communication manager 820 may be an example of various aspects of the communication manager 720 as described herein. In some examples, the communication manager 820 or its various components may be configured to use or otherwise cooperate with the receiver 810, the transmitter 815, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 820 may receive information from the receiver 810, transmit information to the transmitter 815, or be integrated with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0138] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a UE. The UE capability indication component 825 may be configured to or otherwise support means for sending an indication of the UE's ability to support CMR to a network entity, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration component 830 may be configured to or otherwise support means for receiving control signaling indicating a CMR configuration from a network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The channel measurement report indication component 835 may be configured to or otherwise support means for sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to a network entity.

[0139] Fig. 9 A block diagram 900 of a communication manager 920 supporting CSI configuration for joint transmission from multiple TRPs in accordance with one or more aspects of the present disclosure is shown. The communication manager 920 may be an example of aspects of the communication manager 720, the communication manager 820, or both as described herein. The communication manager 920 or its various components may be examples of components for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication 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 with each other directly or indirectly (e.g., via one or more buses).

[0140] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a UE. The UE capability indication component 925 may be configured to or otherwise support means for sending an indication of the UE's ability to support CMR to a network entity, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration component 930 may be configured to or otherwise support means for receiving control signaling indicating a CMR configuration from a network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The channel measurement report indication component 935 may be configured to or otherwise support means for sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to a network entity.

[0141] In some examples, to support receiving control signaling indicating a CMR configuration, CMR configuration component 930 may be configured as or otherwise support components for receiving control signaling indicating a CMR configuration, the control signaling identifying a CSI-RS resource set including two or more CSI-RS resources each associated with a different number of ports.

[0142] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support components for receiving control signaling indicating a CMR configuration, the control signaling identifying corresponding CSI-RS resources in a CSI-RS resource set associated with a group of two or more TRPs in a plurality of TRPs, the corresponding CSI-RS resources being associated with a set of ports corresponding to the group of two or more TRPs.

[0143] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support components for receiving control signaling indicating a CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in a CSI-RS resource set associated with a TRP in a plurality of TRPs, the corresponding CSI-RS resource being associated with a second set of ports corresponding to the TRP, wherein the set of ports is associated with a first number of ports, and the second set of ports is associated with a second number of ports different from the first number of ports.

[0144] In some examples, to support receiving control signaling indicating a CMR configuration, the CMR configuration component 930 may be configured as or otherwise support a component for receiving control signaling indicating a CMR configuration, wherein the control signaling identifies a CSI-RS resource set including time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, the time resource being associated with a communication direction.

[0145] In some examples, to support sending CJT channel measurement reports, the channel measurement report indication component 935 may be configured as or otherwise support components for sending CJT channel measurement reports in a discontinuous reception mode, wherein the CJT channel measurement report is sent based on receiving each CSI-RS resource from a CSI-RS resource set within the same active time of the discontinuous reception mode.

[0146] In some examples, to support sending a CJT channel measurement report, the channel measurement report indication component 935 may be configured as or otherwise support components for sending a CJT channel measurement report associated with a hypothesis for selecting a TRP from multiple TRPs for CJT in a discontinuous reception mode, wherein the CJT channel measurement report for the hypothesis is sent based on receiving each CSI-RS resource associated with the hypothesis from a CSI-RS resource set within the same active time of the discontinuous reception mode.

[0147] In some examples, to support sending a CJT channel measurement report, the channel measurement report indication component 935 may be configured to or otherwise support a component for suppressing sending a second CJT channel measurement report associated with a second hypothesis for selecting a TRP from multiple TRPs for CJT in a discontinuous reception mode based on the UE failing to receive at least one CSI-RS resource from a CSI-RS resource set associated with the second hypothesis for selecting the TRP from multiple TRPs for CJT within the same active time in the discontinuous reception mode.

[0148] Fig.10 A diagram of a system 1000 including a device 1005 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 1005 may be an example of a device 705, a device 805, or a UE 115 as described herein, or include components thereof. 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 communications, including components for sending and receiving communications, such as a communication manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, a code 1035, and a processor 1040. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045).

[0149] I / O controller 1010 can manage input and output signals for device 1005. I / O controller 1010 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1010 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1010 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 1010 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1010 may be implemented as part of a processor (such as processor 1040). In some cases, a user may interact with device 1005 via I / O controller 1010 or via hardware components controlled by I / O controller 1010.

[0150] In some cases, the device 1005 may include a single antenna 1025. However, in some other cases, the device 1005 may have more than one antenna 1025, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bidirectionally via one or more antennas 1025, wired or wireless links as 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 modulated packets to one or more antennas 1025 for transmission; and demodulating packets received from one or more antennas 1025. The transceiver 1015 or the transceiver 1015 and one or more antennas 1025 may be examples of transmitters 715, transmitters 815, receivers 710, receivers 810, or any combination thereof or components thereof as described herein.

[0151] 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 including instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in 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 (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 1030 may include, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0152] 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, 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 processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to enable device 1005 to perform various functions (e.g., functions or tasks that support CSI configuration for joint transmission from multiple TRPs). For example, device 1005 or a component of device 1005 may include processor 1040 and memory 1030 coupled to or coupled to processor 1040, and processor 1040 and memory 1030 are configured to perform the various functions described herein.

[0153] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a UE. For example, the communication manager 1020 may be configured to or otherwise support a component for sending an indication of the UE's ability to support CMR to a network entity, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communication manager 1020 may be configured to or otherwise support a component for receiving control signaling indicating a CMR configuration from a network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration being based on the UE's ability to support CMR including two or more CSI-RS resources. The communication manager 1020 may be configured to or otherwise support a component for sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to the network entity.

[0154] By including or configuring the communication manager 1020 according to the examples described herein, the device 1005 can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1020 can support determining and reporting CSI based on CMR configuration. CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, increase communication quality, and increase available power.

[0155] In some examples, the communication manager 1020 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 1015, one or more antennas 1025, or any combination thereof. For example, the communication manager 1020 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 1015. Although the communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication 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 that may be executed by the processor 1040 to cause the device 1005 to perform various aspects of CSI configuration for joint transmission from multiple TRPs as described herein, or the processor 1040 and the memory 1030 may be otherwise configured to perform or support such operations.

[0156] Fig.11 A block diagram 1100 of a device 1105 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0157] Receiver 1110 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be communicated to other components of device 1105. In some examples, receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0158] The transmitter 1115 may provide a means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 1105. For example, the transmitter 1115 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 1115 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1115 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0159] The communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0160] In some examples, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0161] Additionally or alternatively, in some examples, the communication 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 communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0162] In some examples, communication manager 1120 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1110, transmitter 1115, or both. For example, communication manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated in conjunction with receiver 1110, transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.

[0163] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a network entity. For example, the communication manager 1120 may be configured to or otherwise support a component for receiving an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communication manager 1120 may be configured to or otherwise support a component for sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The communication manager 1120 may be configured to or otherwise support a component for receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0164] By including or configuring the communication manager 1120 according to the examples described herein, the device 1105 (e.g., a processor controlling or otherwise coupled to the receiver 1110, the transmitter 1115, the communication manager 1120, or a combination thereof) can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1120 can support determining and reporting CSI based on CMR configurations. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, increase communication quality, and increase available power (e.g., by increasing communication quality and reducing retransmissions).

[0165] Fig.12 A block diagram 1200 of a device 1205 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105 or network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communication manager 1220. The device 1205 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0166] Receiver 1210 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be communicated to other components of device 1205. In some examples, receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0167] The transmitter 1215 may provide means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 1205. For example, the transmitter 1215 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 1215 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1215 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0168] The device 1205 or its various components may be examples of components for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication manager 1220 may include a capability component 1225, a CMR configuration indication component 1230, a channel measurement report component 1235, or any combination thereof. The communication manager 1220 may be an example of various aspects of the communication manager 1120 as described herein. In some examples, the communication manager 1220 or its various components may be configured to use or otherwise cooperate with the receiver 1210, the transmitter 1215, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 1220 may receive information from the receiver 1210, transmit information to the transmitter 1215, or be integrated with the receiver 1210, the transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.

[0169] According to examples as disclosed herein, the communication manager 1220 may support wireless communications at a network entity. The capability component 1225 may be configured to or otherwise support means for receiving an indication of the UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration indication component 1230 may be configured to or otherwise support means for sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The channel measurement report component 1235 may be configured to or otherwise support means for receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0170] Fig.13 A block diagram 1300 of a communication manager 1320 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The communication manager 1320 may be an example of aspects of the communication manager 1120, the communication manager 1220, or both as described herein. The communication manager 1320 or its various components may be examples of components for performing various aspects of CSI configuration for joint transmission from multiple TRPs as described herein. For example, the communication manager 1320 may include a capability component 1325, a CMR configuration indication component 1330, a channel measurement report component 1335, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses), which communication 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 virtualized component associated with the network entity 105, between devices, components, or virtualized components associated with the network entity 105), or any combination thereof.

[0171] According to examples as disclosed herein, the communication manager 1320 may support wireless communications at a network entity. The capability component 1325 may be configured to or otherwise support means for receiving an indication of the UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The CMR configuration indication component 1330 may be configured to or otherwise support means for sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The channel measurement report component 1335 may be configured to or otherwise support means for receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0172] In some examples, to support sending control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support components for sending control signaling indicating a CMR configuration, the control signaling identifying a CSI-RS resource set comprising two or more CSI-RS resources each associated with a different number of ports.

[0173] In some examples, to support sending control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support components for sending control signaling indicating a CMR configuration, the control signaling identifying corresponding CSI-RS resources in a CSI-RS resource set associated with a group of two or more TRPs in a plurality of TRPs, the corresponding CSI-RS resources being associated with a set of ports corresponding to the group of two or more TRPs.

[0174] In some examples, to support sending control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support components for sending control signaling indicating a CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in a CSI-RS resource set associated with a TRP in a plurality of TRPs, the corresponding CSI-RS resource being associated with a second set of ports corresponding to the TRP, wherein the set of ports is associated with a first number of ports, and the second set of ports is associated with a second number of ports different from the first number of ports.

[0175] In some examples, to support sending control signaling indicating a CMR configuration, the CMR configuration indication component 1330 may be configured as or otherwise support a component for sending control signaling indicating a CMR configuration, wherein the control signaling identifies a CSI-RS resource set including time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, the time resource being associated with a communication direction.

[0176] In some examples, to support receiving CJT channel measurement reports, channel measurement reporting component 1335 may be configured as or otherwise support components for receiving a CJT channel measurement report associated with a hypothesis for selecting a TRP from multiple TRPs for CJT, wherein 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 CSI-RS resource set within the same active time of a non-continuous reception mode of the UE.

[0177] In some examples, to support receiving CJT channel measurement reports, channel measurement reporting component 1335 may be configured as or otherwise support components for receiving CJT channel measurement reports in a discontinuous reception mode, wherein the CJT channel measurement report is received based on sending each CSI-RS resource from a CSI-RS resource set within the same active time of the discontinuous reception mode.

[0178] In some examples, the hypothesis is different from a second hypothesis in which the UE fails to receive at least one CSI-RS resource associated with the second hypothesis from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0179] Fig.14 A diagram of a system 1400 including a device 1405 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 1405 may be an example of a device 1105, a device 1205, or a network entity 105 as described herein, or include components thereof. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which communication may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1405 may include components that support output and acquisition of communications, such as a communication manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, a code 1430, and a processor 1435. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1440).

[0180] 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 communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415, which may be capable of (e.g., concurrently) sending or receiving wireless transmissions. The transceiver 1410 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 1415, via a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 1415, from a wired receiver); and demodulating the signal. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1415 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 1415 configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured to be coupled to one or more processors or memory components, which may be operable to: perform or support operations based on received or obtained information or signals; or 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., processor 1435 or memory 1425 or both) may be included in a chip or chip assembly installed in the device 1405. In some examples, the transceiver may be operable to support communications via one or more communication links (eg, communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0181] Memory 1425 may include RAM and ROM. Memory 1425 may store computer-readable, computer-executable code 1430 including instructions that, when executed by processor 1435, cause device 1405 to perform various functions described herein. Code 1430 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1430 may not be directly executable by processor 1435, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1425 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0182] 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, a discrete gate or transistor logic element, a discrete hardware component, or any combination thereof). In some cases, 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 processor 1435. Processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1425) to enable device 1405 to perform various functions (e.g., functions or tasks that support CSI configuration for joint transmission from multiple TRPs). For example, device 1405 or a component of device 1405 may include processor 1435 and memory 1425 coupled to processor 1435, and processor 1435 and memory 1425 are configured to perform the various functions described herein. The 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, a virtual machine, or a container instance)) that can host functions (e.g., by executing code 1430) to perform functions of the device 1405. The processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1405 (such as within the memory 1425). In some specific implementations, the processor 1435 may be a component of a processing system. A processing system may generally refer to a system or series of machines or components that receives inputs and processes these inputs to produce a set of outputs (which may be passed to, for example, other systems or components of the device 1405). For example, the processing system of the device 1405 may refer to a system that includes various other components or subcomponents of the device 1405 (such as the processor 1435, or the transceiver 1410, or the communication manager 1420, or other components or combinations of components of the device 1405). The processing system of device 1405 can interface with other components of device 1405, and can process information (such as 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, and the one or more interfaces are used to output information or to obtain information or both. One or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or the same interface configured to output information and obtain information, and so on. In some specific implementations, one or more interfaces may refer to an interface between the processing system of the chip or modem and a transmitter, so that device 1405 can send information output from the chip or modem.Additionally or alternatively, in some implementations, one or more interfaces may refer to an interface between a processing system of a chip or modem and a receiver, such that the device 1405 may obtain information or signal input, and the information may be passed to the processing system. One of ordinary skill in the art will readily recognize that a first interface may also obtain information or signal input, and a second interface may also output information or signal output.

[0183] In some examples, bus 1440 may support communications of a protocol layer of a protocol stack (e.g., within the protocol layer). In some examples, bus 1440 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of the protocol stack), which may include communications performed within a component of device 1405 or between different components of device 1405 that may be co-located or located in different locations (e.g., where device 1405 may refer to a system in which one or more of communication manager 1420, transceiver 1410, memory 1425, code 1430, and processor 1435 may be located in one of the different components or divided between the different components).

[0184] In some examples, the communication manager 1420 can manage aspects of communications with the core network 130 (e.g., via one or more wired or wireless backhaul links). For example, the communication manager 1420 can manage the delivery of data communications for client devices (such as one or more UEs 115). In some examples, the communication manager 1420 can manage communications with other network entities 105 and can include a controller or scheduler for controlling communications with the UE 115 in coordination with the other network entities 105. In some examples, the communication manager 1420 can support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0185] According to examples as disclosed herein, the communication manager 1420 may support wireless communications at a network entity. For example, the communication manager 1420 may be configured to or otherwise support components for receiving an indication of a UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The communication manager 1420 may be configured to or otherwise support components for sending control signaling indicating a CMR configuration for the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The communication manager 1420 may be configured to or otherwise support components for receiving a CJT channel measurement report based on the CMR configuration of the CSI-RS resource set.

[0186] By including or configuring a communication manager 1420 according to examples as described herein, the device 1405 can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1420 can support determining and reporting CSI based on CMR configurations. CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, increase communication quality, and increase available power.

[0187] In some examples, the communication manager 1420 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1410, one or more antennas 1415 (e.g., where applicable), or any combination thereof. For example, the communication manager 1420 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 1410. Although the communication manager 1420 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1420 may be supported or performed by the transceiver 1410, the processor 1435, the memory 1425, the code 1430, or any combination thereof. For example, the code 1430 may include instructions that may be executed by the processor 1435 to cause the device 1405 to perform various aspects of the CSI configuration for joint transmission from multiple TRPs as described herein, or the processor 1435 and the memory 1425 may be otherwise configured to perform or support such operations.

[0188] Fig.15 A flow chart illustrating a method 1500 for supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The described UE 115 may be performed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0189] At 1505, the method may include sending an indication to a network entity of the UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Fig. 91505 is performed by the described UE capability indication component 925. Additionally or alternatively, the means for performing 1505 may, but need not necessarily include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0190] At 1510, the method may include receiving control signaling from a network entity indicating a CMR configuration, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Fig. 9 The CMR configuration component 930 described herein is executed. Additionally or alternatively, the components for executing 1510 may, but need not necessarily, include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0191] At 1515, the method may include sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to a network entity. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Fig. 9 The described channel measurement report indicates that the component 935 is executed. Additionally or alternatively, the means for performing 1515 may, but need not necessarily include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0192] Fig.16 A flow chart illustrating a method 1600 for supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The described UE 115 may be performed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0193] At 1605, the method may include sending an indication to a network entity of the UE's ability to support CMR, the CMR including two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Fig. 9 The described UE capability indication component 925 is performed. Additionally or alternatively, the means for performing 1605 may, but need not necessarily include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0194] At 1610, the method may include receiving control signaling from a network entity indicating a CMR configuration, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on a capability of the UE to support CMR including two or more CSI-RS resources, wherein the CSI-RS resource set includes two or more CSI-RS resources each associated with a different number of ports. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed as described in reference Fig. 9 The CMR configuration component 930 described herein is executed. Additionally or alternatively, the components for executing 1610 may, but need not necessarily, include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0195] At 1615, the method may include sending a CJT channel measurement report determined based on the CMR configuration of the CSI-RS resource set to a network entity. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference to Fig. 9 The described channel measurement report indicates that the component 935 is executed. Additionally or alternatively, the means for performing 1615 may, but need not necessarily include, for example, an antenna 1025, a transceiver 1015, a communication manager 1020, a memory 1030 (including code 1035), a processor 1040, and / or a bus 1045.

[0196] Fig.17 A flow chart illustrating a method 1700 for supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a network entity or a component thereof as described in reference to Figures 1 to 6 and Figures 11 to 14In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0197] At 1705, the method may include receiving an indication of the UE's ability to support CMRs that include two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Fig.13 Additionally or alternatively, the components for performing 1705 may, but need not necessarily include, for example, antenna 1415, transceiver 1410, communication manager 1420, memory 1425 (including code 1430), processor 1435, and / or bus 1440.

[0198] At 1710, the method may include sending control signaling indicating a CMR configuration to the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources. The operations of 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference Fig.13 The described CMR configuration directs component 1330 to perform. Additionally or alternatively, means for performing 1710 may, but need not necessarily include, for example, antenna 1415, transceiver 1410, communication manager 1420, memory 1425 (including code 1430), processor 1435, and / or bus 1440.

[0199] At 1715, the method may include receiving a CJT channel measurement report based on a CMR configuration of a CSI-RS resource set. The operations of 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed as described in reference to Fig.13 The channel measurement reporting component 1335 described herein is performed. Additionally or alternatively, the means for performing 1715 may, but need not necessarily include, for example, an antenna 1415, a transceiver 1410, a communication manager 1420, a memory 1425 (including code 1430), a processor 1435, and / or a bus 1440.

[0200] Fig.18A flow chart illustrating a method 1800 for supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 6 and Figures 11 to 14 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0201] At 1805, the method may include receiving an indication of the UE's ability to support CMRs that include two or more CSI-RS resources for CJT CSI reporting for multiple TRPs. The operations of 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Fig.13 Additionally or alternatively, the components for performing 1805 may, but need not necessarily include, for example, antenna 1415, transceiver 1410, communication manager 1420, memory 1425 (including code 1430), processor 1435, and / or bus 1440.

[0202] At 1810, the method may include sending control signaling indicating a CMR configuration to the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the CMR configuration based on the UE's ability to support CMR including two or more CSI-RS resources, wherein the CSI-RS resource set includes two or more CSI-RS resources each associated with a different number of ports. The operations of 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed as described in reference Fig.13 The described CMR configuration directs component 1330 to perform. Additionally or alternatively, means for performing 1810 may, but need not necessarily include, for example, antenna 1415, transceiver 1410, communication manager 1420, memory 1425 (including code 1430), processor 1435, and / or bus 1440.

[0203] At 1815, the method may include receiving a CJT channel measurement report based on a CMR configuration of a CSI-RS resource set. The operations of 1815 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Fig.131430), a processor 1435, and / or a bus 1440.

[0204] The following provides an overview of various aspects of the disclosure:

[0205] Aspect 1: A method for performing wireless communications at a UE, the method comprising: sending an indication of the UE's ability to support CMR to a network entity, the CMR comprising two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; receiving control signaling indicating a CMR configuration from the network entity, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration being based at least in part on the UE's ability to support the CMR comprising two or more CSI-RS resources; and sending a CJT channel measurement report determined at least in part based on the CMR configuration of the CSI-RS resource set to the network entity.

[0206] Aspect 2: A method according to Aspect 1, wherein receiving the control signaling indicating the CMR configuration includes: receiving the control signaling indicating the CMR configuration, the control signaling identifying the CSI-RS resource set, the CSI-RS resource set including two or more CSI-RS resources each associated with a different number of ports.

[0207] Aspect 3: A method according to any one of Aspects 1 to 2, wherein receiving the control signaling indicating the CMR configuration includes: receiving the control signaling indicating the CMR configuration, the control signaling identifying corresponding CSI-RS resources in the CSI-RS resource set associated with a group of two or more TRPs among the multiple TRPs, and the corresponding CSI-RS resources are associated with a port set corresponding to the group of two or more TRPs.

[0208] Aspect 4: A method according to Aspect 3, wherein receiving the control signaling indicating the CMR configuration includes: receiving the control signaling indicating the CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in the CSI-RS resource set associated with a TRP among the multiple TRPs, the corresponding CSI-RS resource being associated with a second port set corresponding to the TRP, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

[0209] Aspect 5: A method according to any one of Aspects 1 to 4, wherein receiving the control signaling indicating the CMR configuration includes: receiving the control signaling indicating the CMR configuration, the control signaling identifier including the CSI-RS resource set of time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, the time resource being associated with a communication direction.

[0210] Aspect 6: A method according to any one of Aspects 1 to 5, wherein sending the CJT channel measurement report includes: sending the CJT channel measurement report in a discontinuous reception mode, wherein the CJT channel measurement report is sent at least in part based on receiving each CSI-RS resource from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0211] Aspect 7: A method according to any one of Aspects 1 to 5, wherein sending the CJT channel measurement report comprises: sending the CJT channel measurement report associated with a hypothesis for selecting a TRP from the multiple TRPs for CJT in a discontinuous reception mode, wherein the CJT channel measurement report for the hypothesis is sent at least in part based on receiving each CSI-RS resource associated with the hypothesis from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0212] Aspect 8: According to the method described in Aspect 7, the method also includes: suppressing sending a second CJT channel measurement report associated with the second hypothesis for selecting a TRP from the multiple TRPs for CJT in the discontinuous reception mode, at least in part based on the UE failing to receive at least one CSI-RS resource associated with the second hypothesis for selecting the second hypothesis from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0213] Aspect 9: A method for performing wireless communications at a network entity, the method comprising: receiving an indication of a UE's ability to support CMR, the CMR comprising two or more CSI-RS resources for CJT CSI reporting for multiple TRPs; sending control signaling indicating a CMR configuration to the UE, the control signaling identifying a CSI-RS resource set for CJT CSI reporting for the multiple TRPs, the CMR configuration being based at least in part on the UE's ability to support the CMR comprising two or more CSI-RS resources; and receiving a CJT channel measurement report based at least in part on the CMR configuration of the CSI-RS resource set.

[0214] Aspect 10: A method according to Aspect 9, wherein sending the control signaling indicating the CMR configuration includes: sending the control signaling indicating the CMR configuration, the control signaling identifies the CSI-RS resource set, and the CSI-RS resource set includes two or more CSI-RS resources, each of which is associated with a different number of ports.

[0215] Aspect 11: A method according to any one of Aspects 9 to 10, wherein sending the control signaling indicating the CMR configuration includes: sending the control signaling indicating the CMR configuration, the control signaling identifying the corresponding CSI-RS resources in the CSI-RS resource set associated with a group of two or more TRPs among the multiple TRPs, and the corresponding CSI-RS resources are associated with a port set corresponding to the group of two or more TRPs.

[0216] Aspect 12: A method according to Aspect 11, wherein sending the control signaling indicating the CMR configuration includes: sending the control signaling indicating the CMR configuration, the control signaling identifying a second corresponding CSI-RS resource in the CSI-RS resource set associated with a TRP among the multiple TRPs, the corresponding CSI-RS resource being associated with a second port set corresponding to the TRP, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

[0217] Aspect 13: A method according to any one of Aspects 9 to 12, wherein sending the control signaling indicating the CMR configuration includes: sending the control signaling indicating the CMR configuration, the control signaling identifier including the CSI-RS resource set of time resources, the time resources including a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, and the time resource is associated with a communication direction.

[0218] Aspect 14: A method according to any one of Aspects 9 to 13, wherein receiving the CJT channel measurement report includes: receiving the CJT channel measurement report in a discontinuous reception mode, wherein the CJT channel measurement report is received at least in part based on sending each CSI-RS resource from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0219] Aspect 15: A method according to any one of Aspects 9 to 13, wherein receiving the CJT channel measurement report includes: receiving the CJT channel measurement report associated with a hypothesis for selecting a TRP from the multiple TRPs for CJT, wherein the CJT channel measurement report is received at least in part based on the UE receiving each CSI-RS resource associated with the hypothesis from the CSI-RS resource set within the same active time of the UE's non-continuous reception mode.

[0220] Aspect 16: A method according to aspect 15, wherein the hypothesis is different from the second hypothesis that the UE fails to receive at least one CSI-RS resource associated with the second hypothesis from the CSI-RS resource set within the same active time of the discontinuous reception mode.

[0221] Aspect 17: An apparatus for wireless communication, the apparatus comprising: a memory; a transceiver; and at least one processor, the at least one processor being coupled to the memory and the transceiver, the at least one processor being configured to cause the apparatus to perform a method according to any one of Aspects 1 to 8.

[0222] Aspect 18: An apparatus for wireless communication at a UE, comprising: at least one component for performing the method according to any one of aspects 1 to 8.

[0223] Aspect 19: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 8.

[0224] Aspect 20: An apparatus for wireless communication, comprising: a memory; and at least one processor, the at least one processor being coupled to the memory, the at least one processor being configured to execute the method according to any one of aspects 9 to 16.

[0225] Aspect 21: An apparatus for wireless communication at a network entity, comprising: at least one component for performing the method according to any one of aspects 9 to 16.

[0226] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 9 to 16.

[0227] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0228] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. 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.

[0229] The information and signals described herein may be represented using any of a variety of different technologies and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0230] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0231] 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 as one or more instructions or codes of a computer-readable medium, or sent using the one or more instructions or codes. Other examples and specific 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, hard wiring, or any combination of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0232] Computer-readable medium includes both non-transient computer storage medium and communication medium, including any medium that facilitates computer program to be transmitted from one position to another position.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device, or can be used for carrying or storing desired program code parts and can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure Any other non-transient medium.Moreover, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disks and optical disks used herein include CDs, laser optical disks, optical optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks. Disks can reproduce data magnetically, and optical disks can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0233] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0234] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, etc. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, retrieving, selecting, choosing, establishing, and other such similar actions.

[0235] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label regardless of the second reference label, or other subsequent reference labels.

[0236] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "having advantages over other examples." The specific embodiments include specific details to provide an understanding of the described technology. However, these technologies 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.

[0237] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), the method comprising: sending, to a network entity, an indication of the UE's ability to support channel measurement resources, the channel measurement resources comprising two or more channel state information reference signal resources for coherently jointly transmitting channel state information reports for a plurality of transmission reception points; receiving control signaling indicating a channel measurement resource configuration from the network entity, the control signaling identifying a set of channel state information reference signal resources for coherently jointly transmitting channel state information reports for the plurality of transmission 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; as well as A coherent jointly transmitted channel measurement report determined based at least in part on the channel measurement resource configuration of the channel state information reference signal resource set is transmitted to the network entity.

2. The method according to claim 1, wherein receiving the control signaling indicating the channel measurement resource configuration comprises: The control signaling indicating the channel measurement resource configuration is received, the control signaling identifying the channel state information reference signal resource set, the channel state information reference signal resource set comprising two or more channel state information reference signal resources each associated with a different number of ports.

3. The method according to claim 1, wherein receiving the control signaling indicating the channel measurement resource configuration comprises: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifying the corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a group of two or more transmitting and receiving points among the multiple transmitting and receiving points, and the corresponding channel state information reference signal resource is associated with a port set corresponding to the group of two or more transmitting and receiving points.

4. The method according to claim 3, wherein receiving the control signaling indicating the channel measurement resource configuration comprises: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifying a second corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a transmitting and receiving point among the multiple transmitting and receiving points, the corresponding channel state information reference signal resource being associated with a second port set corresponding to the transmitting and receiving point, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

5. The method according to claim 1, wherein receiving the control signaling indicating the channel measurement resource configuration comprises: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifier includes the channel state information reference signal resource set of time resources, the time resources include a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, and the time resource is associated with a communication direction.

6. The method according to claim 1, wherein sending the coherent joint transmission channel measurement report comprises: The coherent joint transmission channel measurement report is sent in a discontinuous reception mode, wherein the coherent joint transmission channel measurement report is sent at least in part based on receiving each channel state information reference signal resource from the channel state information reference signal resource set within a same active time of the discontinuous reception mode.

7. The method according to claim 1, wherein sending the coherent joint transmission channel measurement report comprises: The coherent joint transmission channel measurement report associated with a hypothesis used to select a transmission reception point from among the multiple transmission reception points for coherent joint transmission is sent in a discontinuous reception mode, wherein the coherent joint transmission channel measurement report for the hypothesis is sent at least in part based on receiving each channel state information reference signal resource associated with the hypothesis from the channel state information reference signal resource set during the same active time of the discontinuous reception mode.

8. The method according to claim 7, further comprising: At least partially based on the UE's failure to receive at least one channel state information reference signal resource associated with a second hypothesis for selecting a transmit reception point from the multiple transmit reception points for coherent joint transmission from the channel state information reference signal resource set within the same active time of the discontinuous reception mode, suppressing the sending of a second coherent joint transmission channel measurement report associated with the second hypothesis in the discontinuous reception mode.

9. A method for wireless communication at a network entity, the method comprising: receiving an indication of a capability of a user equipment (UE) to support channel measurement resources including two or more channel state information reference signal resources for coherent joint transmission of channel state information reports for a plurality of transmission reception points; sending, for the UE, control signaling indicating a channel measurement resource configuration, the control signaling identifying a set of channel state information reference signal resources for coherently jointly sending channel state information reports for the multiple 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; as well as A coherent jointly transmitted channel measurement report is received based at least in part on the channel measurement resource configuration of the channel state information reference signal resource set.

10. The method according to claim 9, wherein sending the control signaling indicating the channel measurement resource configuration comprises: The control signaling indicating the channel measurement resource configuration is sent, the control signaling identifying the channel state information reference signal resource set, the channel state information reference signal resource set including two or more channel state information reference signal resources each associated with a different number of ports.

11. The method according to claim 9, wherein sending the control signaling indicating the channel measurement resource configuration comprises: The control signaling indicating the channel measurement resource configuration is sent, wherein the control signaling identifies a corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a group of two or more transmitting and receiving points among the multiple transmitting and receiving points, and the corresponding channel state information reference signal resource is associated with a port set corresponding to the group of two or more transmitting and receiving points.

12. The method according to claim 11, wherein sending the control signaling indicating the channel measurement resource configuration comprises: Send the control signaling indicating the channel measurement resource configuration, the control signaling identifying a second corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a transmitting and receiving point among the multiple transmitting and receiving points, the corresponding channel state information reference signal resource being associated with a second port set corresponding to the transmitting and receiving point, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

13. The method according to claim 9, wherein sending the control signaling indicating the channel measurement resource configuration comprises: The control signaling indicating the channel measurement resource configuration is sent, wherein the control signaling identifier includes the channel state information reference signal resource set of time resources, the time resources include a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, and the time resource is associated with a communication direction.

14. The method of claim 9, wherein receiving the coherent joint transmission channel measurement report comprises: The coherent jointly transmitted channel measurement report is received in a discontinuous reception mode, wherein the coherent jointly transmitted channel measurement report is 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. The method of claim 9, wherein receiving the coherent joint transmission channel measurement report comprises: Receive the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmission reception point from the multiple transmission reception points for coherent joint transmission, wherein the coherent joint transmission channel measurement report for the hypothesis is received at least in part based on the UE receiving each channel state information reference signal resource associated with the hypothesis from the channel state information reference signal resource set during the same active time of the UE's discontinuous reception mode.

16. The method of claim 15, wherein the assumption is different from the second assumption that the UE fails to receive at least one channel state information reference signal resource associated with the second assumption from the channel state information reference signal resource set within the same active time of the discontinuous reception mode.

17. An apparatus for wireless communication, the apparatus comprising: Memory; Transceiver; and At least one processor of a user equipment (UE), the at least one processor coupled to the memory and the transceiver, and the at least one processor configured to: sending, via the transceiver, to a network entity an indication of the UE's ability to support channel measurement resources, the channel measurement resources comprising two or more channel state information reference signal resources for coherently jointly transmitting channel state information reports for a plurality of transmission reception points; receiving, via the transceiver, control signaling from the network entity indicating a channel measurement resource configuration, the control signaling identifying a set of channel state information reference signal resources for coherently jointly transmitting channel state information reports for the plurality of transmission 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; as well as A coherent jointly transmitted channel measurement report determined at least in part based on the channel measurement resource configuration of the channel state information reference signal resource set is transmitted to the network entity via the transceiver.

18. The apparatus of claim 17, wherein the at least one processor is further configured to: The control signaling indicating the channel measurement resource configuration is received, the control signaling identifying the channel state information reference signal resource set, the channel state information reference signal resource set comprising two or more channel state information reference signal resources each associated with a different number of ports.

19. The apparatus of claim 17, wherein the at least one processor is further configured to: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifying the corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a group of two or more transmitting and receiving points among the multiple transmitting and receiving points, and the corresponding channel state information reference signal resource is associated with a port set corresponding to the group of two or more transmitting and receiving points.

20. The apparatus of claim 19, wherein the at least one processor is further configured to: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifying a second corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a transmitting and receiving point among the multiple transmitting and receiving points, the corresponding channel state information reference signal resource being associated with a second port set corresponding to the transmitting and receiving point, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

21. The apparatus of claim 17, wherein the at least one processor is further configured to: Receive the control signaling indicating the channel measurement resource configuration, the control signaling identifier includes the channel state information reference signal resource set of time resources, the time resources include a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, and the time resource is associated with a communication direction.

22. The apparatus of claim 17, wherein the at least one processor is further configured to: The coherent joint transmission channel measurement report associated with a hypothesis used to select a transmission reception point from among the multiple transmission reception points for coherent joint transmission is sent in a discontinuous reception mode, wherein the coherent joint transmission channel measurement report for the hypothesis is sent at least in part based on receiving each channel state information reference signal resource associated with the hypothesis from the channel state information reference signal resource set during the same active time of the discontinuous reception mode.

23. The apparatus according to claim 22, further comprising: At least partially based on the UE's failure to receive at least one channel state information reference signal resource associated with a second hypothesis for selecting a transmit reception point from the multiple transmit reception points for coherent joint transmission from the channel state information reference signal resource set within the same active time of the discontinuous reception mode, suppressing the sending of a second coherent joint transmission channel measurement report associated with the second hypothesis in the discontinuous reception mode.

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

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

26. The apparatus of claim 24, wherein the at least one processor is further configured to: The control signaling indicating the channel measurement resource configuration is sent, wherein the control signaling identifies a corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a group of two or more transmitting and receiving points among the multiple transmitting and receiving points, and the corresponding channel state information reference signal resource is associated with a port set corresponding to the group of two or more transmitting and receiving points.

27. The apparatus of claim 26, wherein the at least one processor is further configured to: Send the control signaling indicating the channel measurement resource configuration, the control signaling identifying a second corresponding channel state information reference signal resource in the channel state information reference signal resource set associated with a transmitting and receiving point among the multiple transmitting and receiving points, the corresponding channel state information reference signal resource being associated with a second port set corresponding to the transmitting and receiving point, wherein the port set is associated with a first number of ports, and the second port set is associated with a second number of ports different from the first number of ports.

28. The apparatus of claim 24, wherein the at least one processor is further configured to: The control signaling indicating the channel measurement resource configuration is sent, wherein the control signaling identifier includes the channel state information reference signal resource set of time resources, the time resources include a first time resource, a last time resource, and a time resource between the first time resource and the last time resource in one or more consecutive time slots, and the time resource is associated with a communication direction.

29. The apparatus of claim 24, wherein the at least one processor is further configured to: Receive the coherent joint transmission channel measurement report associated with a hypothesis used to select a transmission reception point from the multiple transmission reception points for coherent joint transmission, wherein the coherent joint transmission channel measurement report for the hypothesis is received at least in part based on the UE receiving each channel state information reference signal resource associated with the hypothesis from the channel state information reference signal resource set during the same active time of the UE's discontinuous reception mode.

30. The apparatus of claim 29, wherein the hypothesis is different from the second hypothesis that the UE fails to receive at least one channel state information reference signal resource associated with a second hypothesis from the channel state information reference signal resource set within the same active time of the discontinuous reception mode.

Images