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

Abstract

Methods, systems, and devices are described for wireless communication to support channel state information (CSI) configuration for joint transmission from multiple transmit receive points (TRPs). A user equipment (UE) may receive control signaling from a network entity indicating a configuration of a set of resources configured for CJT CSI reporting for a plurality of TRPs. The configuration may indicate a number of physical resources associated with the set of resources. Based on receiving the control signaling, the UE may determine a number of computing resources associated with a set of CSI-RS resources, and may send an indication of the number of computing resources to a network entity. The number of computing resources may be different from the number of physical resources. Based on the determined number of computing resources and the indicated number of physical resources, the UE may determine and transmit CJT CSI reports for the plurality of TRPs.

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, and the like. 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 employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more network entities, each of which supports wireless communication of communication devices, which may be referred to as 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 are used to count computational resources for CSI feedback for coherent joint transmission (CJT) of multiple TRPs. For example, the count of computed CSI reference signal (CSI-RS) resources may be different from the number of physical CSI-RS resources configured for a user equipment (UE) (e.g., due to the joint nature of the transmission). The UE may receive control signaling from a network entity (e.g., a TRP or other network entity) indicating a configuration of a CSI-RS resource set configured for CJT CSI reporting for multiple TRPs. The configuration may indicate the number of physical resources (e.g., CSI-RS resources) associated with the CSI-RS resource set. Based on receiving the control signaling, the UE may determine the number of active resources associated with the CSI-RS resource set, the number of computational resources associated with the CSI-RS resource set, or both.

[0005] Based on determining the number of computing resources, the UE may send an indication of the number of computing resources (e.g., an indication of the UE's ability to support the number of computing resources) to a network entity (e.g., a TRP, another network entity), wherein the number of computing resources is different from the number of physical resources associated with the CSI-RS resource set. Based on the determined number of computing resources and the indicated number of physical resources, 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), wherein the CJT CSI report may be determined based on the number of computing resources and the number of physical resources. Based on the CSI report 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: receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; sending to the network entity an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and sending to the network entity CJT CSI reports for the multiple TRPs determined based on the number of computational resources and the number of physical resources.

[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 may be configured to: receive control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; send to the network entity an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and send to the network entity CJT CSI reports for the multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include: a component for receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; a component for sending to the network entity an indication of the ability of the UE to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and a component for sending to the network entity a CJT CSI report for the multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions that can be executed by a processor to perform the following operations: receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; sending to the network entity an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and sending to the network entity CJT CSI reports for the multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: receiving the control signaling indicating that the number of physical resources can be two or more physical resources associated with the CSI-RS resource set; and sending the indication of the capability to the UE based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources can be one computing resource for measuring the CSI-RS resource set.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the two or more physical resources may be equal to the number of the plurality of TRPs.

[0012] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: receiving the control signaling indicating that the number of physical resources may be two or more physical resources associated with the CSI-RS resource set; and sending the indication of the capability to the UE based on the number of ports used for the multiple TRPs, the threshold number of ports, and the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set may be two or more computing resources.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the two or more physical resources may be equal to the number of the plurality of TRPs.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: receiving the control signaling indicating that the number of physical resources may be one or more physical resources associated with the CSI-RS resource set, and the number of the one or more physical resources is less than the number of the multiple TRPs; and sending the indication of the capability to the UE based on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set may be equal to the number of the multiple TRPs.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the one or more physical resources may be one.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of active physical resources may be equal to the number of physical resources multiplied by the number of hypotheses used to select a TRP from the plurality of TRPs.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of physical resources may be equal to the number of port groups of the plurality of TRPs, each of which may be associated with the same number of ports.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of physical resources may be equal to the number of CSI resources of the CSI-RS resource set, and each of these CSI resources may be associated with the same number of ports.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the amount of computing resources may be based on: a number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP from the multiple TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with corresponding hypotheses corresponding to one or more TRPs from the multiple TRPs.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending an indication of the one or more corresponding coefficients, wherein the one or more corresponding coefficients may be based on capabilities of the UE.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving, from the network entity, an indication of one or more codebooks for CJT from the multiple TRPs, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the multiple TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the multiple TRPs.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending to the network entity an indication of one or more codebooks for CJT from the multiple TRPs, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the multiple TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the multiple TRPs.

[0023] A method for wireless communication at a network entity is described. The method may include: sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; receiving an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and receiving a CJT CSI report for the multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0024] 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 may be configured to: send control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; receive an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and receive CJT CSI reports for the multiple TRPs, the CJT CSI reports being based on the number of computational resources and the number of physical resources.

[0025] Another apparatus for wireless communication at a network entity is described. The apparatus may include: a component for sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for a CJT CSI report for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; a component for receiving an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and a component for receiving a CJT CSI report for the multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0026] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions that can be executed by a processor to perform the following operations: send control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; receive an indication of the UE's ability to support a number of computational resources for measuring the CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set; and receive CJT CSI reports for the multiple TRPs, the CJT CSI reports being based on the number of computational resources and the number of physical resources.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: sending the control signaling indicating that the number of physical resources can be two or more physical resources associated with the CSI-RS resource set; and receiving the indication of the capability of the UE based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources can be a computing resource for measuring the CSI-RS resource set.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the two or more physical resources may be equal to the number of the plurality of TRPs.

[0029] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: sending the control signaling indicating that the number of physical resources may be two or more physical resources associated with the CSI-RS resource set; and receiving the indication of the capability of the UE, indicating that the number of computing resources used to measure the CSI-RS resource set may be two or more computing resources, wherein the number of computing resources may be based on the number of ports used for the multiple TRPs, the threshold number of ports, and the number of physical resources being two or more physical resources.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the two or more physical resources may be equal to the number of the plurality of TRPs.

[0031] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following actions: sending the control signaling indicating that the number of physical resources may be one or more physical resources associated with the CSI-RS resource set, and the number of the one or more physical resources is less than the number of the multiple TRPs; and receiving the indication of the capability of the UE based on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set may be equal to the number of the multiple TRPs.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of the one or more physical resources may be one.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of active physical resources may be equal to the number of physical resources multiplied by the number of hypotheses used to select a TRP from the plurality of TRPs.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of physical resources may be equal to the number of port groups of the plurality of TRPs, each of which may be associated with the same number of ports.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of physical resources may be equal to the number of CSI resources of the CSI-RS resource set, and each of these CSI resources may be associated with the same number of ports.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the amount of computing resources may be based on: a number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP from the multiple TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with corresponding hypotheses corresponding to one or more TRPs from the multiple TRPs.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving an indication of the one or more corresponding coefficients, wherein the one or more corresponding coefficients may be based on capabilities of the UE.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending an indication of one or more codebooks for CJT from the multiple TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the multiple TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the multiple TRPs.

[0039] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving an indication of one or more codebooks for CJT from the plurality of TRPs, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the plurality of TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the plurality of TRPs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1An 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.

[0041] 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.

[0042] 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.

[0043] Figure 4 An 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.

[0044] Figure 5A and Figure 5B 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.

[0045] Figure 6 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.

[0046] Figure 7 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.

[0047] Figure 8 and Fig. 9 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.

[0048] Fig.10 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.

[0049] Fig.11 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.

[0050] Fig.12 and Fig.13 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.

[0051] Fig.14 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.

[0052] Fig.15 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.

[0053] Figures 16 to 19 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

[0054] A user equipment (UE) may communicate with one or more transmit receive points (TRPs) in an uplink, a downlink, or both. In some cases, the 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 channel state information (CSI) feedback reported by the UE, for example, based on one or more channel measurement resources (CMRs) and / or CSI configurations. Based on the CSI and / or CMR configurations, the UE may determine the number of computational resources associated with performing CSI measurements and / or reporting (e.g., the number of CSI-RS resources or ports used to measure CSI reference signals (CSI-RS)). However, when performing CJT, different algorithms may be used for different codebooks, and such algorithms may be associated with different computational resources.

[0055] The present disclosure provides techniques for counting computational resources to support different algorithms for different codebooks (e.g., CSI feedback for CJT multi-TRP transmission). For example, the count of computed CSI-RS resources may be different from the number of physical CSI-RS resources configured for the UE (e.g., due to the joint nature of the transmission). In some examples (e.g., for a first type of codebook, for a joint codebook), the UE may count a computational resource for a set of CSI-RS resources. In some other examples (e.g., for the first type of codebook, for a joint codebook), the UE may count a computational resource that is equal to the number of TRPs associated with the set of CSI-RS resources. In some other examples (e.g., for a second type of codebook, for a separate codebook), the computational resource may be based on a number of assumptions for selecting one or more configurations of TRPs for multi-TRP transmission.

[0056] The UE may receive control signaling from a network entity (e.g., a TRP or other network entity) indicating a configuration of a CSI-RS resource set configured for CJT CSI reporting for multiple TRPs. The configuration may indicate a number of physical resources (e.g., CSI-RS resources) associated with the CSI-RS resource set. Based on receiving the control signaling, the UE may determine a number of active resources associated with the CSI-RS resource set, a number of computational resources associated with the CSI-RS resource set, or both.

[0057] Based on determining the number of computational resources, the UE may send an indication of the number of computational resources (e.g., an indication of the UE's ability to support the number of computational resources) to a network entity (e.g., a TRP, another network entity), wherein the number of computational resources is different from the number of physical resources associated with the CSI-RS resource set. Based on the determined number of computational resources and the indicated number of physical resources, 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.

[0058] 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), wherein the CJT CSI report may be determined based on the number of computing resources and the number of physical resources. Based on the CSI report from the UE, multiple TRPs may perform CJT to send one or more messages to the UE.

[0059] 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 by and described with reference to transmission schemes, resource schemes, process flows, apparatus diagrams, system diagrams, and flow diagrams related to CSI configuration for joint transmission from multiple TRPs.

[0060] 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).

[0061] 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, etc. 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) over which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0062] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both stationary and mobile at different times. The UEs 115 may be devices that take different form factors or have 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.

[0063] 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, or computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, or 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.

[0064] 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 .

[0065] 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).

[0066] 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)).

[0067] The functional split between CU 160, DU 165, and RU 170 is flexible and may 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 may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may 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 an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that communicate via such communication links.

[0068] 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 core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140). One or more donor network entities 105 (e.g., IAB donors) 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 termination (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. 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.

[0069] 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).

[0070] 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.

[0071] 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.

[0072] 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 set of RF spectrum resources having a physical layer structure defined 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 these devices and any part (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 part 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).

[0073] 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.

[0074] 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).

[0075] 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.

[0076] A subframe, a time slot, a mini-time 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 a burst of a shortened TTI (sTTI)).

[0077] According to various techniques, physical channels may be multiplexed using carriers for communication. For example, physical control channels and physical data channels may be multiplexed using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique to signal via a downlink carrier. 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 number 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 .

[0078] 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.

[0079] 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 unidirectional 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 set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0080] 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). UE 115 may be designed to support ultra-reliable, 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.

[0081] In some examples, the 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 aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 in 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.

[0082] 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 through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of 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.

[0083] 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) compared to communications using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0084] 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 use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as network entity 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.

[0085] 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 antenna ports of multiple rows and columns 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.

[0086] 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. For example, multiple signals may be 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 technology includes single-user MIMO (SU-MIMO) and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to the same receiving device and in which multiple spatial layers are sent to multiple devices.

[0087] 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 direct 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 these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the sender device or the receiver device or relative to some other direction).

[0088] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly 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.

[0089] UE 115 may receive control signaling from a network entity 105 (e.g., a TRP or other network entity 105) indicating a configuration of a CSI-RS resource set configured for CJT CSI reporting for multiple TRPs. The configuration may indicate a number of physical resources (e.g., CSI-RS resources) associated with the CSI-RS resource set. Based on receiving the control signaling, UE 115 may determine a number of active resources associated with the CSI-RS resource set, a number of computational resources associated with the CSI-RS resource set, or both. Based on determining the number of computational resources, UE 115 may send an indication of the number of computational resources (e.g., an indication of the ability of UE 115 to support the number of computational resources) to a network entity 105 (e.g., a TRP, another network entity 105), wherein the number of computational resources is different from the number of physical resources associated with the CSI-RS resource set. Based on the determined number of computational resources and the indicated number of physical resources, the UE 115 may receive one or more CSI-RS from one or more TRPs, and may send a CJT CSI report for the multiple TRPs to a network entity 105 (e.g., a TRP, another network entity 105). 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.

[0090] Figure 2A and Figure 2B Examples of transmission schemes 200-a and 200-b supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure are illustrated. The transmission schemes 200-a and 200-b may implement one or more aspects of the wireless communication system 100, or be implemented thereby. For example, the 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 the 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 applied to any number of multiple TRPs (up to four TRPs) (e.g., or another number of TRPs).

[0091] 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 separately pre-coded 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 each TRP may 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 using different spatial layers for transmission.

[0092] 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 on the data transmitted by TRP A and TRP B, and the data may be associated with two spatial layers. The pre-coding device and the spatial layers 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 transmit (e.g., concurrently transmit) the pre-coded data to UE 115-a via the corresponding ports 205 of the TRPs. The pre-coding of the data transmitted by TRP A and TRP B may be represented by an equation such as equation (1):

[0093]

[0094] 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 precoding matrix (e.g., predecoder) used by TRP A, V B represents the precoding matrix (eg, precoder) 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 on two layers.

[0095] 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 each TRP may 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).

[0096] For CJT, each TRP may be associated with a corresponding predecoder for jointly predecoding 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 A joint codebook may be used (e.g., using the same or similar precoder, such as using a joint spatial dimension, a joint frequency dimension, or both), or a separate codebook may be used (e.g., a semi-separate codebook, such as separate for the TRPs in terms of a spatial dimension basis, a frequency dimension basis, or both). The precoders and spatial layers may be configured for CJT from TRP A and TRP B. After precoding the data (e.g., joint precoding), TRP A and TRP B may send (e.g., concurrently send, coherently send) the precoded data to UE 115-b via respective ports 205 of the TRPs. Precoding of the data sent by TRP A and TRP B may be represented by an equation such as equation (2):

[0097]

[0098] 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 precoding matrix (e.g., predecoder) used by TRP A, V B represents the 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 on two layers.

[0099] 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 the UE 115.

[0100] 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)). The CJT transmission may be associated with backhaul connectivity and synchronization across multiple TRPs and the same or similar number of antenna ports 205 across multiple TRPs (e.g., for each TRP). To perform CJT communications across multiple TRPs, the 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 per resource (e.g., 32 ports 205).

[0101] UE 115-b may receive control signaling indicating a configuration of a CSI-RS resource set configured for CJT CSI reporting for multiple TRPs. The configuration may indicate the number of physical resources (e.g., CSI-RS resources) associated with the CSI-RS resource set. Based on receiving the control signaling, UE 115-b may determine the number of computing resources associated with the CSI-RS resource set and may send an indication of the number of computing resources, wherein the number of computing resources may be different from the number of physical resources associated with the CSI-RS resource set. Based on the determined number of computing resources and the indicated number of physical resources, UE 115-b may receive one or more CSI-RS from one or more TRPs and may send CJT CSI reports for multiple TRPs based on the received CSI-RS. Based on the CSI reports from UE 115-b, multiple TRPs may perform CJT to send one or more messages to UE 115-b.

[0102] 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 may 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 may be implemented by two or more TRPs (e.g., two or more network entities 105, portions thereof) and a UE 115. These devices may 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 applied to any number of multiple TRPs (up to four TRPs) (e.g., or another number of TRPs).

[0103] In some cases, the UE 115, one or more of the TRPs, or both may construct one or more hypotheses for joint transmission. For example, each of the one or more hypotheses may be associated with a corresponding number of TRPs for joint transmission (e.g., CJT) and which TRPs will be used for joint transmission. A CSI report (e.g., a CSI and / or CMR configuration) may be configured with one or more single TRP hypotheses, one or more multi-TRP hypotheses, or both. For the multi-TRP hypothesis, the UE 115 may report two precoding matrix indicators (PMIs), two rank indicators (RIs), and one channel quality indicator (CQI). In some cases, the one or more hypotheses may be applicable to a type I codebook (e.g., a single panel codebook).

[0104] 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 (e.g., of K1 resources) configured for TRP 1 and a second CSI-RS resource group 310-b (e.g., of K2 resources) configured for TRP 2. 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 or a multiple TRP transmission scenario, or both.

[0105] In one CSI-RS set 305 configured with a single TRP hypothesis and a multi-TRP hypothesis, two CMR groups 310 may be configured and may correspond to two TRPs (e.g., TRP 1 and TRP 2). For the multi-TRP hypothesis, a maximum of N (e.g., N is equal to 1 or 2) pairs of CMRs may be configured. Figure 3 In the illustrated example, two (e.g., N=2) pairs of CMRs may be configured. Additionally, for a TRP (e.g., for two TRPs), a total of M single TRP hypotheses (e.g., CMRs) may be configured, where M may be equal to the sum of M1 hypotheses associated with TRP 1 (e.g., M1 CMRs) and M2 hypotheses associated with TRP 2 (e.g., M2 CMRs). Based on how the resources are configured, the M hypotheses may or may not include 2N paired CMRs.

[0106] UE 115 may use a CSI-RS resource indicator (CRI) to report a single TRP hypothesis and a multi-TRP hypothesis. In a first mode (e.g., mode 1), UE 115 may report one multi-TRP CSI hypothesis (e.g., the best hypothesis determined) and a certain number (e.g., X) of single TRP hypotheses (e.g., the best hypothesis determined). For example, the number of single TRP hypotheses (e.g., X) may be configurable via RRC (e.g., configured as values ​​0, 1, 2). For example, if the number of single TRP hypotheses is equal to 2 (e.g., X=2), the first reported single TRP hypothesis may be associated with a first CMR group (e.g., resource group 310-a), and the second reported single TRP hypothesis may be associated with a second CMR group (e.g., resource group 310-b). In a second mode (e.g., mode 2), UE 115 may report one CSI among all configured CSI hypotheses (e.g., all M+N hypotheses).

[0107] The number of bits used for CRI reporting in Mode 1 (e.g., reporting in CSI Part 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 can be used for reporting, where the first CRI may include bits, 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) may be included in one CRI.

[0108] One or more of the hypothetical examples described herein may be applied 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 applied to CJT, which may be associated with a type II codebook. In some cases, for a CJT CMR configuration, a CSI-RS resource may be configured for each CMR, 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, more than one CSI-RS resource (e.g., K resources) may be configured for each CMR, where each CMR may be associated with the same number of ports (e.g., representing K TRPs).

[0109] 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, one transmission assumption may be supported for CJT (e.g., and more than one assumption may not be supported).

[0110] In some cases, a number N of 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 the maximum number N of TRPs configured by the network entity 105). TRP ). 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 the number of TRPs selected. Assumptions (for example, for N TRP =4, then 15 hypotheses) to measure CSI. An example of such hypotheses can be shown in Table 1, which can represent different TRP transmission combinations of the following four TRPs: TRP A, TRP B, TRP C, and TRP D.

[0111]

[0112] Table 1

[0113] In some cases, UE 115 may report CSI corresponding to the 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 the number of transmission hypotheses (e.g., K hypotheses). The CSI may be measured using a configured subset of a set of hypotheses (eg, configured by the network entity 105).

[0114] 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), and the number of active CSI-RS resources or ports. CPU )). However, when performing CJT, different algorithms can be used for the joint codebook or the separate codebooks (e.g., as shown in reference Figure 2B As described above), and such algorithms may be associated with different computational resources. For example, if a joint codebook is used (e.g., which may be associated with higher transmission performance), the TRP selection may be based on a spatial domain basis selection (e.g., because each spatial domain layer may correspond to a respective TRP), which may be based on the power of the measured channel projected into the spatial domain. In such cases, the computational complexity associated with CMR and / or CSI may not be associated with (e.g., may be unrelated to) one or more configured hypotheses (e.g., the number of configured hypotheses). However, if separate codebooks are used, the computational complexity may increase with the number of configured hypotheses.

[0115] The present disclosure provides techniques for counting computational resources to support different algorithms associated with joint codebooks and separate codebooks (e.g., CSI feedback for CJT multi-TRP transmissions). For example, the count of computed CSI-RS resources may be different from the number of physical CSI-RS resources configured for the UE (e.g., due to the joint nature of the transmission). In some examples, for a joint codebook and a CSI-RS resource set 305 configured with multiple resources (e.g., a corresponding resource for each TRP), the UE may count one computational resource for the resource set 305. In some other examples, for a joint codebook and a CSI-RS resource set 305 configured with one or more resources (e.g., one resource, fewer resources than the total number of TRPs), the UE may count computational resources equal to the number of TRPs of the resource set 305. In some other examples, for a separate codebook, the computational resource may be based on a number of one or more configured assumptions.

[0116] 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 may 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 the 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 applied to any number of multiple TRPs (up to four TRPs) (e.g., or another number of TRPs).

[0117] As reference Figure 2B As described, TRP 405-a and TRP 405-b may communicate with UE 115-c using CJT. For example, data (e.g., data X) for transmission to UE 115-c may be jointly pre-coded by TRP 405-a and TRP 405-b, wherein the joint pre-coding may support phase coherence for joint transmission. Each TRP 405 may be associated with a corresponding number of ports (e.g., four ports), and each TRP may use one or more identical layers for transmission. For example, two layers may be used for transmission from TRP 405-a, and the same two layers may be used for transmission from TRP 405-b (e.g., a total of two layers for transmission to UE 115-c).

[0118] Each TRP 405 may be associated with a corresponding pre-decoder for jointly pre-decoding data sent by TRP 405-a and TRP 405-b. For example, TRP 405-a may use pre-decoder V A Data X is pre-decoded, 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.

[0119] 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 CMRs and / or CSI configurations and associated assumptions, such as those described in reference to Figure 3 Based on the 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 above, when performing CJT, different algorithms may be used for the joint codebook or the separate codebooks (e.g., as shown in reference Figure 2B described), and such algorithms may be associated with different computing resources.

[0120] Thus, UE 115-c may support counting computational resources for different algorithms associated with a joint codebook and a separate codebook (e.g., for CSI feedback for CJT multi-TRP transmission). For example, UE 115-c may receive control signaling from a network entity 105 (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105) indicating a configuration of a CSI-RS resource set configured for CJT CSI reporting for multiple TRPs 405. The configuration may indicate a number of physical resources (e.g., CSI-RS resources) associated with the CSI-RS resource set. Based on receiving the control signaling, UE 115-c may determine the number of active resources associated with the CSI-RS resource set, the number of computational resources associated with the CSI-RS resource set, or both.

[0121] For example, based on the indicated set of CSI-RS resources, UE 115-c may determine (e.g., count) a number of computational resources used to measure the set of CSI-RS resources (e.g., a number of computational resources supported by UE 115-c). The count of computational CSI-RS resources may be different from, for example, the number of physical resources indicated by the control signaling (e.g., based on the joint nature of CJT).

[0122] For example, in some cases, for a joint codebook and a CSI-RS resource set configured with multiple resources (e.g., a corresponding resource for each TRP 405), the UE may count one active resource and one computational resource for the resource set. In some cases, for a joint codebook and a CSI-RS resource set configured with one or more resources (e.g., one resource, fewer resources than the total number of TRPs), the UE may count active resources and computational resources equal to the number of TRPs 405 associated with the resource set (e.g., the number of active resources and computational resources may be equal to the number of TRPs). Figure 5A and Figure 5B Further examples associated with joint codebook counting are described.

[0123] In some cases, for a separate codebook, the active resources and computational resources may be based on the number of one or more configured hypotheses. For example, CSI-RS resources may be grouped into resource units, where each unit may include resources or port groups associated with the same number of ports. In such cases, the active resources may be equal to the number of resource units in the CSI-RS resource set multiplied by the number of single TRP hypotheses or multi-TRP hypotheses. The computational resources for a separate codebook may be determined based on: the number of hypotheses for single TRP transmission; the number of one or more multi-TRP hypotheses associated with CJT transmission; and one or more coefficients associated with the number of one or more hypotheses.

[0124] Based on determining the number of computing resources, UE 115-c may send an indication of the number of computing resources (e.g., an indication of the ability of UE 115-c to support the number of computing resources) to a network entity (e.g., TRP 405-a, TRP 405-b, another TRP 405, another network entity 105), where the number of computing resources is different from the number of physical resources associated with the CSI-RS resource set. Based on the determined number of computing resources and the indicated number of physical resources, 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.

[0125] 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 number of computing resources and the number of physical resources. 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, one or more other TRPs 405 may determine, select, or configure a corresponding precoder for precoding data and sending the data to UE 115-c (e.g., via CJT).

[0126] Figure 5A and Figure 5B Examples of resource schemes 500-a and 500-b supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure are illustrated. Resource schemes 500-a and 500-b may implement or be implemented by one or more aspects of wireless communication system 100 or 400 and one or more aspects of transmission schemes 200-a and 200-b or resource scheme 300. For example, resource schemes 500-a and 500-b may be implemented by two or more TRPs and UE 115, which may be reference UEs. Figures 1 to 4 Examples of the corresponding devices described. Figures 2B to 4 As described, the two or more TRPs may communicate with UE 115 using CJT.

[0127] As reference Figure 3 and Figure 4 As described above, the CJT from the two or more TRPs may be based on or associated with CSI feedback reported by UE 115. For example, the CJT may be based on CSI feedback associated with one or more CMRs and / or CSI configurations and associated assumptions, such as those described in reference to Figure 3 and Figure 4 Based on the one or more CMRs and / or CSI configurations, the UE 115 may determine the number of active resources (eg, or ports), the number of computing resources (eg, CPU), or both. For example, based on the indicated CSI-RS resource set 505, the UE 115 may determine (e.g., count) the number of computational resources used to measure the CSI-RS resource set 505 (e.g., the number of computational resources supported by the UE 115). Similarly, based on the indicated CSI-RS resource set 505, the UE 115 may determine (e.g., count) the number of active resources associated with the CSI-RS resource set 505.

[0128] In some cases, UE 115 may be configured with a joint codebook associated with one or more CMR and / or CSI configurations for CJT. Figure 5A In the illustrated first example, the UE 115 may be configured with a CSI-RS resource set 505 (e.g., a non-zero power (NZP) CSI-RS resource set 505) having a number of physical resources 510 equal to a total number of TRPs (e.g., N ) available for CJT with the UE 115 (e.g., including two or more TRPs). TRP ).exist Figure 5A In the second illustrated example, the UE 115 may be configured with a CSI-RS resource set 505 (e.g., an NZP CSI-RS resource set 505) having a number K of physical resources 510 greater than 1 and less than a total number (e.g., N) of TRPs available for CJT with the UE 115 (e.g., including two or more TRPs). TRP ). In the first example or the second example, the UE 115 may determine (e.g., count) the number of active resources (e.g., ports) as one resource (e.g., port) and may also determine (e.g., count) the number of computing resources as one computing resource.

[0129] In some cases, in the first example or the second example, UE 115 may select a port based on the number of ports associated with the total number of TRPs (e.g., ) and a threshold number of ports (e.g., threshold, 32 ports) to determine the number of active resources (e.g., ports) and the number of computing resources. For example, the number of active resources and the number of computing resources can be determined (e.g., counted) as in represents the number of ports associated with the total number of TRPs, and threshold represents the threshold number of ports. In such a case, if the threshold is 32 ports, and the total number of ports used for TRPs is greater than 32 and less than or equal to 64, then the number of active resources (e.g., ports) and the number of computing resources will be equal to 2.

[0130] In some cases, in the second example (eg, with K configured CSI-RS resources 510, where 1 <K<N TRP ), UE 115 may determine (e.g., count) the number of active resources (e.g., ports) as N TRP resources (eg, ports), and the number of computing resources may also be determined (eg, counted) as N TRP resources.

[0131] exist Figure 5B In the illustrated third example, the UE 115 may be configured with a CSI-RS resource set 505 (e.g., NZP CSI-RS resource set 505) whose number of physical resources 510 is equal to 1. In such a case, the UE 115 may determine (e.g., count) the number of active resources (e.g., ports) as N. TRP resources (eg, ports), and the number of computing resources may also be determined (eg, counted) as N TRP resources.

[0132] In some cases, the number of computing resources may be reported by UE 115 (e.g., to a TRP, a network entity) as the UE capabilities of UE 115. In some other cases, the number of computing resources may not be reported by UE 115 (e.g., and may be independently determined by UE 115 and one or more TRPs).

[0133] One or more options for counting active resources and / or computational resources for a CSI-RS resource set 505 (eg, for a joint codebook) may be shown in Table 2, which illustrates examples of different numbers of physical resources, active resources, and computational resources as described herein.

[0134]

[0135] Table 2

[0136] Figure 6 An example of a resource scheme 600 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is illustrated. The resource scheme 600 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 600 may be implemented by two or more TRPs and UEs 115, which may be reference UEs. Figures 1 to 5B Examples of the corresponding devices described. Figures 2B to 5B As described, the two or more TRPs may communicate with UE 115 using CJT.

[0137] As reference Figures 3 to 5B As described above, the CJT from the two or more TRPs may be based on or associated with CSI feedback reported by UE 115. For example, the CJT may be based on CSI feedback associated with one or more CMRs and / or CSI configurations and associated assumptions, such as those described in reference to Figures 3 to 5B Based on the one or more CMRs and / or CSI configurations, the UE 115 may determine the number of active resources (e.g., or ports), the number of computing resources (e.g., CPU ), or both. For example, based on the indicated CSI-RS resource set 605, the UE 115 may determine (e.g., count) the number of computational resources used to measure the CSI-RS resource set 605 (e.g., the number of computational resources supported by the UE 115). Similarly, based on the indicated CSI-RS resource set 605, the UE 115 may determine (e.g., count) the number of active resources associated with the CSI-RS resource set 605.

[0138] In a first example, the CSI-RS resource set 605 may include one port group 610 for all TRPs (e.g., for two or more TRPs) configured for the UE 115. In a second example, the CSI-RS resource set 605 may include one respective resource for each TRP configured for the UE 115 (e.g., may include one port group 610 for all N TRPs). TRP N of TRPs TRP In a third example, CSI-RS resource set 605 may include more than one resource but less than one corresponding resource for each TRP configured for UE 115 (eg, may include resources for all N TRP K resources of a TRP, of which 1 <K<N TRP ).

[0139] In some cases, the UE 115 may be configured with a separate codebook associated with one or more CMR and / or CSI configurations for CJT. In such examples, the configured CSI-RS resource sets 605 (e.g., NZP CSI-RS resource sets 605) may be grouped into units (e.g., resource units 615) of the port group 610 for counting active resources. For example, in a group including one resource or K resources (e.g., 1 <K<N TRP ), the corresponding resource unit 615 may include one or more port groups 610 having the same number of ports. Additionally or alternatively, in the example of a CSI-RS resource set 605 including N TRPIn an example of a CSI-RS resource set 605 having a plurality of resources (e.g., equal to the total number of TRPs), the corresponding resource unit 615 may include a port group 610 having the same number of ports (e.g., NZP CSI-RS resources). Thus, a first CSI-RS resource unit 615-a may include one or more CSI-RS resources or port groups 610 or both associated with a first number of ports, and a second CSI-RS resource unit 615-b may include one or more CSI-RS resources or port groups 610 or both associated with the first number of ports.

[0140] As an illustrative example, one CSI-RS resource may include multiple ports (e.g., 8*3=24 ports) for multiple (e.g., three) TRPs. In such an example, the three resource units may correspond to a port group including ports {0, ..., 7}, a port group including ports {8, ..., 15}, and a port group including ports {16, ..., 23}, respectively.

[0141] Additionally or alternatively, in some examples, multiple CSI-RS resources (e.g., three CSI-RS resources) may each include another number of ports (e.g., 8 ports) for the three TRPs. In such examples, the three resource units may correspond to CSI-RS resources, respectively.

[0142] In some examples, multiple CSI-RS resources (e.g., two CSI-RS resources) may include multiple (e.g., different) numbers of ports for three TRPs (e.g., 8 ports and 16 ports for the two CSI-RS resources, respectively). In such examples, the three resource units may correspond to a first CSI-RS resource of the two CSI-RS resources (e.g., having 8 ports), a first port group of a second CSI-RS resource of the two CSI-RS resources (e.g., having ports {0, ..., 7}), and a second port group of the second CSI-RS resource (e.g., having ports {8, ..., 15}), respectively.

[0143] When determining (e.g., counting) active resources (e.g., ports) of a CSI-RS resource set 605, each resource unit 615 may be counted a certain number of times (e.g., X times), where X may be the number of times the corresponding resource unit 615 is referenced by one or more hypotheses (e.g., a single TRP hypothesis, a multiple TRP hypothesis, or both) associated with (e.g., configured for) the resource unit 615.

[0144] When determining (e.g., counting) the number of computing resources used to measure the CSI-RS resource set 605, an equation such as equation (3) may be used to determine the number of computing resources:

[0145] O CPU =M+Y2N 2-TRP +Y3N 3-TRP +Y4N 4-TRP , (3)

[0146] Among them, CPU represents the number of computing resources, M represents the number of hypotheses associated with (e.g., configured for) a single TRP, and N n-TRP represents the number of hypotheses associated with (eg, configured for) n TRPs for a multi-TRP CJT (eg, n=2, 3, 4, ...), and Y n Represents the coefficients associated with n TRPs for a multi-TRP CJT.

[0147] In the first example, Y n It may be defined by a standard (e.g., a wireless communication standard). n can be defined to be equal to n (e.g., for m separate type II codebooks), or Y n can be defined to be equal to n+1 (e.g., to take into account common phase). In the second example, Y n May be reported by UE 115 as a UE capability. For example, Y n It may be reported (eg, separately) for each value of n (eg, for n=2, 3, 4, ...).

[0148] In some cases, UE 115 may use a joint codebook (e.g., as referenced Figure 5A and Figure 5B ) for CJT, and in some cases, UE 115 may use a separate codebook (e.g., as described in reference Figure 6 The present invention relates to a method for performing CJT on a wireless communication standard. In a first example, the wireless communication standard may support (e.g., may only support) one of a joint codebook or a separate codebook, and the UE 115 (e.g., and two or more TRPs) may operate according to the corresponding techniques described herein. In a second example, the UE 115 may support a joint codebook and a separate codebook, and may be configured (e.g., by a network entity, a TRP) with either or both of the joint codebook or the separate codebook for the corresponding CSI-RS and / or CMR configuration. In a third example, the UE 115 may support a joint codebook, a separate codebook, or both, and may report support for such codebooks (e.g., reported to a network entity, a TRP) as a UE capability. In response to the reported UE capability, the UE 115 may be configured (e.g., by a network entity, a TRP) with either or both of the joint codebook or the separate codebook for the corresponding CSI-RS and / or CMR configuration.

[0149] One or more options for counting active resources and / or computational resources for a CSI-RS resource set 605 (eg, for a separate codebook) may be shown in Table 3, which illustrates examples of different numbers of physical resources, active resources, and computational resources as described herein.

[0150]

[0151] Table 3

[0152] Figure 7 An example of a process flow 700 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 700 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, the resource scheme 300, the resource scheme 500-a, the resource scheme 500-b, or the resource scheme 600. For example, the process flow 700 may be implemented by a UE 115-d and a network entity 105-a (e.g., a TRP or other network entity), which may be a reference UE or network entity. Figures 1 to 6 An example of a UE 115 and a network entity 105 (eg, a TRP) is described.

[0153] In the following description of process flow 700, operations may be performed in an order different from that 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 also be excluded from process flow 700, or other operations may be added to process flow 700. Although UE 115-d and network entity 105-a are shown as performing operations of process flow 700, 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.

[0154] At 705, in some cases, the UE 115-d may send an indication of one or more codebooks to be used for CJT from the multiple TRPs to the network entity 105-a. Additionally or alternatively, at 705, the network entity 105-a may send an indication of one or more codebooks to be used for CJT from the multiple TRPs to the UE 115-d. The one or more codebooks may be selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain basis shared by the multiple TRPs (e.g., a joint codebook) and a codebook associated with a separate frequency domain basis for each TRP in the multiple TRPs (e.g., a separate codebook).

[0155] At 710, the network entity 105-a may send control signaling to the UE 115-d indicating a set of CSI-RS resources to be used for CJT CSI reporting for multiple TRPs (e.g., as described in reference Figures 3 to 6 The configuration may also indicate the number of physical resources associated with the CSI-RS set.

[0156] At 715, in some cases, the UE 115-d may count the number of active resources associated with the CSI-RS resource set, computational resources (e.g., used to measure the CSI-RS resource set), or both. Figures 4 to 6 As described above, the UE 115-d may count the number of computational resources, which may be different from the number of physical resources associated with the CSI-RS resource set. The UE 115-d may also count the number of active resources, where the number of active resources may be the same number as the number of computational resources (e.g., as shown in FIG. 1 ). Figure 5A and Figure 5B described) or a different amount (e.g., as referenced Figure 6 described above).

[0157] At 720, the UE 115-d may send an indication of the capability of the UE 115-d to support the number of computing resources (e.g., the counted number of computing resources) for measuring the set of CSI-RS resources to the network entity 105-a. For example, the UE 115-d may send the indication of the capability to support the number of computing resources based on counting (e.g., determining) the number of computing resources at 715.

[0158] At 725, 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 the CSI-RS resource set. The one or more CSI-RS may be based on a configuration of the CSI-RS resource set or one or more parameters associated therewith. Based on the transmission of the one or more CSI-RS, and based on the number of computational resources, 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).

[0159] At 730, UE 115-d may send to network entity 105-a a CJT CSI report for multiple TRPs determined based on the number of computing resources and the number of physical resources (e.g., based on measurements performed by UE 115-d). The CJT CSI report may be associated with one or more assumptions for selecting a TRP from the multiple TRPs for CJT.

[0160] At 735, 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 the 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).

[0161] Figure 8 A 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 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).

[0162] 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 associated with 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.

[0163] 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 (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 transmission from multiple TRPs). 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.

[0164] The communication manager 820, the receiver 810, the transmitter 815, 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 820, the receiver 810, the transmitter 815, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0165] In some examples, the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit system). 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 components, discrete hardware components, or any combination thereof configured as or otherwise supporting components for performing the functions described in the present disclosure. In some examples, the 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).

[0166] Additionally or alternatively, in some examples, the communication manager 820, the receiver 810, the transmitter 815, 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 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting means 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.

[0167] In some examples, the communication manager 820 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 810, the transmitter 815, or both. For example, the communication manager 820 can receive information from the receiver 810, transmit information to the transmitter 815, or integrate with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0168] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a UE. For example, the communication manager 820 may be configured as or otherwise support a component for receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The communication manager 820 may be configured as or otherwise support a component for sending an indication to the network entity of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The communication manager 820 may be configured as or otherwise support a component for sending to the network entity a CJT CSI report for multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0169] By including or configuring a communication manager 820 according to examples as described herein, the device 805 (e.g., a processor that controls or otherwise couples with the receiver 810, the transmitter 815, the communication manager 820, or a combination thereof) can support techniques for more efficiently utilizing communication resources. For example, the communication manager 820 can support determining and reporting CSI based on the number of determined computing resources. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, improve communication quality, and increase available power.

[0170] Fig. 9 A block diagram 900 of a device 905 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 905 may be an example of aspects of the device 805 or UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. The device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0171] The receiver 910 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 905. The receiver 910 may utilize a single antenna or a collection of multiple antennas.

[0172] The transmitter 915 may provide means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit 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 transmission from multiple TRPs). In some examples, the transmitter 915 may be co-located with the receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a collection of multiple antennas.

[0173] The device 905 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 CSI-RS configuration component 925, a UE capability indication component 930, a CSI-RS report indication component 935, or any combination thereof. The communication manager 920 may be an example of various aspects of the communication manager 820 as described herein. In some examples, the communication manager 920 or its various components may be configured to use or otherwise cooperate with the receiver 910, the transmitter 915, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 920 may receive information from the receiver 910, transmit information to the transmitter 915, or integrate with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.

[0174] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a UE. The CSI-RS configuration component 925 may be configured as or otherwise support a component for receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The UE capability indication component 930 may be configured as or otherwise support a component for sending an indication to a network entity of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The CSI-RS report indication component 935 may be configured as or otherwise support a component for sending to a network entity a CJT CSI report for multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0175] Fig.10A block diagram 1000 of a communication manager 1020 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The communication manager 1020 can be an example of aspects of the communication manager 820, the communication manager 920, or both as described herein. The communication manager 1020 or its various components can 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 1020 may include a CSI-RS configuration component 1025, a UE capability indication component 1030, a CSI-RS report indication component 1035, a codebook component 1040, a coefficient indication component 1045, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0176] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a UE. The CSI-RS configuration component 1025 may be configured as or otherwise support a component for receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The UE capability indication component 1030 may be configured as or otherwise support a component for sending an indication to a network entity of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The CSI-RS report indication component 1035 may be configured as or otherwise support a component for sending to a network entity a CJT CSI report for multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0177] In some examples, CSI-RS configuration component 1025 can be configured as or otherwise support means for receiving control signaling indicating that the number of physical resources is two or more physical resources associated with a CSI-RS resource set. In some examples, UE capability indication component 1030 can be configured as or otherwise support means for sending an indication of the capability of the UE based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources is one computing resource for measuring the CSI-RS resource set.

[0178] In some examples, the number of the two or more physical resources is equal to the number of multiple TRPs.

[0179] In some examples, CSI-RS configuration component 1025 may be configured as or otherwise support a component for receiving control signaling indicating that the number of physical resources is two or more physical resources associated with a CSI-RS resource set. In some examples, UE capability indication component 1030 may be configured as or otherwise support a component for sending an indication of the capability of the UE based on the number of ports for multiple TRPs, the threshold number of ports, and the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set is two or more computing resources.

[0180] In some examples, the number of the two or more physical resources is equal to the number of multiple TRPs.

[0181] In some examples, CSI-RS configuration component 1025 can be configured as or otherwise support a component for receiving control signaling indicating that the number of physical resources is one or more physical resources associated with a CSI-RS resource set, and the number of the one or more physical resources is less than the number of multiple TRPs. In some examples, UE capability indication component 1030 can be configured as or otherwise support a component for sending an indication of the capability of the UE based on the number of physical resources being one or more physical resources, and the indication indicates that the number of computing resources used to measure the CSI-RS resource set is equal to the number of multiple TRPs.

[0182] In some examples, the number of the one or more physical resources is one.

[0183] In some examples, the number of active physical resources is equal to the number of physical resources multiplied by the number of hypotheses used to select a TRP from among the multiple TRPs.

[0184] In some examples, the number of physical resources is equal to the number of port groups of the plurality of TRPs, each of which is associated with the same number of ports.

[0185] In some examples, the number of physical resources is equal to the number of CSI resources of the CSI-RS resource set, each of which is associated with the same number of ports.

[0186] In some examples, the amount of computing resources is based on: the number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP from a plurality of TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with corresponding hypotheses corresponding to one or more TRPs from the plurality of TRPs.

[0187] In some examples, each of the one or more respective coefficients is based on a number of multiple TRPs associated with the respective hypothesis.

[0188] In some examples, coefficient indication component 1045 may be configured as or otherwise support means for sending an indication of one or more corresponding coefficients, where the one or more corresponding coefficients are based on capabilities of the UE.

[0189] In some examples, codebook component 1040 may be configured as or otherwise support means for receiving, from a network entity, an indication of one or more codebooks for CJT from a plurality of TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the plurality of TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the plurality of TRPs.

[0190] In some examples, codebook component 1040 may be configured as or otherwise support means for sending to a network entity an indication of one or more codebooks for CJT from multiple TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including codebooks associated with a frequency domain basis shared by the multiple TRPs and including codebooks associated with a separate frequency domain basis for each TRP in the multiple TRPs.

[0191] Fig.11 A diagram of a system 1100 including 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 a device 805, a device 905, or a UE 115 as described herein, or include components thereof. The device 1105 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1105 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 1120, an input / output (I / O) controller 1110, a transceiver 1115, an antenna 1125, a memory 1130, a code 1135, and a processor 1140. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1145).

[0192] I / O controller 1110 can manage input and output signals for device 1105. I / O controller 1110 can also manage peripheral devices that are not integrated into device 1105. In some cases, I / O controller 1110 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1110 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 1110 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1110 may be implemented as part of a processor (such as processor 1140). In some cases, a user may interact with device 1105 via I / O controller 1110 or via hardware components controlled by I / O controller 1110.

[0193] In some cases, the device 1105 may include a single antenna 1125. However, in some other cases, the device 1105 may have more than one antenna 1125 that may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1115 may communicate bidirectionally via one or more antennas 1125, a wired link, or a wireless link as described herein. For example, the transceiver 1115 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1115 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 1125 for transmission, and for demodulating packets received from one or more antennas 1125. The transceiver 1115, or the transceiver 1115 and one or more antennas 1125 may be examples of transmitters 815, transmitters 915, receivers 810, receivers 910, or any combination thereof or any components thereof as described herein.

[0194] The memory 1130 may include random access memory (RAM) and read-only memory (ROM). The memory 1130 may store computer-readable, computer-executable code 1135 including instructions that, when executed by the processor 1140, cause the device 1105 to perform various functions described herein. The code 1135 may be stored in a non-transitory computer-readable medium (such as system memory or another type of memory). In some cases, the code 1135 may not be directly executable by the processor 1140, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, among other things, the memory 1130 may contain a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0195] Processor 1140 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 1140 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1140. Processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1130) to enable device 1105 to perform various functions (e.g., functions or tasks supporting CSI configuration for joint transmission from multiple TRPs). For example, device 1105 or a component of device 1105 may include processor 1140 and memory 1130 coupled to or coupled to processor 1140, and processor 1140 and memory 1130 are configured to perform the various functions described herein.

[0196] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a UE. For example, the communication manager 1120 may be configured as or otherwise support a component for receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The communication manager 1120 may be configured as or otherwise support a component for sending an indication to the network entity of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The communication manager 1120 may be configured as or otherwise support a component for sending to the network entity a CJT CSI report for multiple TRPs determined based on the number of computational resources and the number of physical resources.

[0197] By including or configuring the communication manager 1120 according to the examples described herein, the device 1105 can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1120 can support determining and reporting CSI based on the number of determined computing resources. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, improve communication quality, and increase available power.

[0198] In some examples, the communication manager 1120 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 1115, one or more antennas 1125, or any combination thereof. For example, the communication manager 1120 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 1115. Although the communication manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1120 may be supported or performed by the processor 1140, the memory 1130, the code 1135, or any combination thereof. For example, the code 1135 may include instructions that can be executed by the processor 1140 to cause the device 1105 to perform various aspects of the CSI configuration for joint transmission from multiple TRPs as described herein, or the processor 1140 and the memory 1130 may be otherwise configured to perform or support such operations.

[0199] 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 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).

[0200] 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 fiber) interfaces, wireless interfaces, or any combination thereof.

[0201] 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 fiber) 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.

[0202] The communication manager 1220, the receiver 1210, the transmitter 1215, 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 1220, the receiver 1210, the transmitter 1215, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0203] In some examples, the communication manager 1220, the receiver 1210, the transmitter 1215, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit system). 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 components, discrete hardware components, or any combination thereof configured as or otherwise supporting 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).

[0204] Additionally or alternatively, in some examples, the communication manager 1220, the receiver 1210, the transmitter 1215, 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 1220, the receiver 1210, the transmitter 1215, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting means 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.

[0205] In some examples, communication manager 1220 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1210, transmitter 1215, or both. For example, communication manager 1220 may receive information from receiver 1210, transmit information to transmitter 1215, or be integrated in conjunction with receiver 1210, transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.

[0206] According to examples as disclosed herein, the communication manager 1220 may support wireless communications at a network entity. For example, the communication manager 1220 may be configured as or otherwise support a component for sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The communication manager 1220 may be configured as or otherwise support a component for receiving an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The communication manager 1220 may be configured as or otherwise support a component for receiving a CJT CSI report for multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0207] By including or configuring a communication manager 1220 according to examples as described herein, the device 1205 (e.g., a processor controlling or otherwise coupled to the receiver 1210, the transmitter 1215, the communication manager 1220, or a combination thereof) can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1220 can support determining and reporting CSI based on the number of determined computing resources. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, improve communication quality, and increase available power (e.g., by improving communication quality and reducing retransmissions).

[0208] Fig.13 A block diagram 1300 of a device 1305 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. The device 1305 may be an example of aspects of the device 1205 or the network entity 105 as described herein. The device 1305 may include a receiver 1310, a transmitter 1315, and a communication manager 1320. The device 1305 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0209] Receiver 1310 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 1305. In some examples, receiver 1310 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1310 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0210] The transmitter 1315 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 1305. For example, the transmitter 1315 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 1315 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1315 may support outputting information by sending signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1315 and the receiver 1310 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0211] Device 1305 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, communication manager 1320 may include CSI-RS configuration indication component 1325, resource capability component 1330, CSI-RS reporting component 1335, or any combination thereof. Communication manager 1320 may be an example of various aspects of communication manager 1220 as described herein. In some examples, communication manager 1320 or its various components may be configured to use or otherwise cooperate with receiver 1310, transmitter 1315, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, communication manager 1320 may receive information from receiver 1310, transmit information to transmitter 1315, or integrate with receiver 1310, transmitter 1315, or both to obtain information, output information, or perform various other operations as described herein.

[0212] According to examples as disclosed herein, the communication manager 1320 may support wireless communications at a network entity. The CSI-RS configuration indication component 1325 may be configured as or otherwise support a component for sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The resource capability component 1330 may be configured as or otherwise support a component for receiving an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The CSI-RS reporting component 1335 may be configured as or otherwise support a component for receiving a CJT CSI report for multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0213] Fig.14 A block diagram 1400 of a communication manager 1420 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 1420 may be an example of aspects of the communication manager 1220, the communication manager 1320, or both as described herein. The communication manager 1420 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 1420 may include a CSI-RS configuration indication component 1425, a resource capability component 1430, a CSI-RS reporting component 1435, a codebook indication component 1440, a coefficient component 1445, 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.

[0214] According to examples as disclosed herein, the communication manager 1420 may support wireless communications at a network entity. The CSI-RS configuration indication component 1425 may be configured as or otherwise support a component for sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The resource capability component 1430 may be configured as or otherwise support a component for receiving an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The CSI-RS reporting component 1435 may be configured as or otherwise support a component for receiving a CJT CSI report for multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0215] In some examples, CSI-RS configuration indicating component 1425 may be configured as or otherwise support means for sending control signaling indicating that the number of physical resources is two or more physical resources associated with a CSI-RS resource set. In some examples, CSI-RS reporting component 1435 may be configured as or otherwise support means for receiving an indication of the capability of the UE based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources is one computing resource for measuring the CSI-RS resource set.

[0216] In some examples, the number of the two or more physical resources is equal to the number of multiple TRPs.

[0217] In some examples, CSI-RS configuration indication component 1425 may be configured as or otherwise support a component for sending control signaling indicating that the number of physical resources is two or more physical resources associated with a CSI-RS resource set. In some examples, CSI-RS reporting component 1435 may be configured as or otherwise support a component for receiving an indication of a capability of a UE, the indication indicating that the number of computing resources used to measure a CSI-RS resource set is two or more computing resources, wherein the number of computing resources is based on the number of ports for multiple TRPs, the threshold number of ports, and the number of physical resources is two or more physical resources.

[0218] In some examples, the number of the two or more physical resources is equal to the number of multiple TRPs.

[0219] In some examples, CSI-RS configuration indication component 1425 may be configured as or otherwise support means for sending control signaling indicating that the number of physical resources is one or more physical resources associated with a CSI-RS resource set, the number of the one or more physical resources being less than the number of multiple TRPs. In some examples, CSI-RS reporting component 1435 may be configured as or otherwise support means for receiving an indication of the capability of the UE based on the number of physical resources being one or more physical resources, the indication indicating that the number of computational resources used to measure the CSI-RS resource set is equal to the number of multiple TRPs.

[0220] In some examples, the number of the one or more physical resources is one.

[0221] In some examples, the number of active physical resources is equal to the number of physical resources multiplied by the number of hypotheses used to select a TRP from among the multiple TRPs.

[0222] In some examples, the number of physical resources is equal to the number of port groups of the plurality of TRPs, each of which is associated with the same number of ports.

[0223] In some examples, the number of physical resources is equal to the number of CSI resources of the CSI-RS resource set, each of which is associated with the same number of ports.

[0224] In some examples, the amount of computing resources is based on: the number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP from a plurality of TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with corresponding hypotheses corresponding to one or more TRPs from the plurality of TRPs.

[0225] In some examples, each of the one or more respective coefficients is based on a number of multiple TRPs associated with the respective hypothesis.

[0226] In some examples, coefficient component 1445 may be configured as or otherwise support means for receiving an indication of one or more corresponding coefficients, where the one or more corresponding coefficients are based on capabilities of the UE.

[0227] In some examples, the codebook indication component 1440 may be configured as or otherwise support means for sending an indication of one or more codebooks for CJT from multiple TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain basis shared by the multiple TRPs and including a codebook associated with a separate frequency domain basis for each TRP in the multiple TRPs.

[0228] In some examples, the codebook indication component 1440 may be configured as or otherwise support means for receiving an indication of one or more codebooks for CJT from a plurality of TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain basis shared by the plurality of TRPs and including a codebook associated with a separate frequency domain basis for each TRP in the plurality of TRPs.

[0229] Fig.15 A diagram of a system 1500 including a device 1505 supporting CSI configuration for joint transmission from multiple TRPs according to one or more aspects of the present disclosure is shown. Device 1505 may be an example of device 1205, device 1305, or network entity 105 as described herein, or include components of these devices. Device 1505 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. Device 1505 may include components that support output and acquisition of communications, such as a communication manager 1520, a transceiver 1510, an antenna 1515, a memory 1525, a code 1530, and a processor 1535. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1540).

[0230] The transceiver 1510 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 1510 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1510 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1505 may include one or more antennas 1515, which may be capable of (e.g., concurrently) sending or receiving wireless transmissions. The transceiver 1510 may also include a modem for modulating a signal, for providing a modulated signal for transmission (e.g., via one or more antennas 1515, via a wired transmitter), for receiving a modulated signal (e.g., from one or more antennas 1515, from a wired receiver), and for demodulating a signal. In some implementations, the transceiver 1510 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1515 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 1515 configured to support various transmitting operations or output operations, or a combination thereof. In some implementations, the transceiver 1510 may include or be configured to be coupled to one or more processors or memory components that are operable to perform the following operations: 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 1510, or the transceiver 1510 and one or more antennas 1515, or the transceiver 1510 and one or more antennas 1515 and one or more processors or memory components (e.g., processor 1535, or memory 1525, or both) may be included in a chip or chip component installed in the device 1505. 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).

[0231] Memory 1525 may include RAM and ROM. Memory 1525 may store computer-readable, computer-executable code 1530 including instructions that, when executed by processor 1535, cause device 1505 to perform various functions described herein. Code 1530 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1530 may not be directly executable by processor 1535, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1525 may also include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0232] Processor 1535 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 component, a discrete hardware component, or any combination thereof). In some cases, processor 1535 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1535. Processor 1535 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1525) to enable device 1505 to perform various functions (e.g., functions or tasks supporting CSI configuration for joint transmission from multiple TRPs). For example, device 1505 or a component of device 1505 may include processor 1535 and memory 1525 coupled to processor 1535, and processor 1535 and memory 1525 are configured to perform the various functions described herein. The processor 1535 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 1530) to perform functions of the device 1505. The processor 1535 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1505 (such as in the memory 1525). In some specific implementations, the processor 1535 may be a component of a processing system. A processing system may generally refer to a system or a series of machines or components that receive inputs and process these inputs to produce a set of outputs (which may be passed to other systems or components (e.g., the device 1505)). For example, the processing system of the device 1505 may refer to a system including various other components or subcomponents of the device 1505, such as the processor 1535, or the transceiver 1510, or the communication manager 1520, or other components or combinations of components of the device 1505. The processing system of device 1505 can be docked with other components of device 1505, and can process information (such as input or signal) received from other components or output information to other components. For example, a chip or modem of device 1505 may include a processing system and one or more interfaces for outputting information or for obtaining information or both. The 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, as well as other specific implementations. In some specific implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and a transmitter, so that device 1505 can send information output from the chip or modem.Additionally or alternatively, in some implementations, the 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 1505 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 the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0233] In some examples, bus 1540 may support communications of a protocol layer of a protocol stack (e.g., within the protocol layer). In some examples, bus 1540 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 1505, or communications performed between different components of device 1505 that may be co-located or located in different locations (e.g., where device 1505 may refer to a system in which one or more of communication manager 1520, transceiver 1510, memory 1525, code 1530, and processor 1535 may be located in one of the different components or divided between the different components).

[0234] In some examples, communication manager 1520 may manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communication manager 1520 may manage delivery of data communications for client devices, such as one or more UEs 115. In some examples, communication manager 1520 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with UE 115 in coordination with other network entities 105. In some examples, communication manager 1520 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0235] According to examples as disclosed herein, the communication manager 1520 may support wireless communications at a network entity. For example, the communication manager 1520 may be configured as or otherwise support a component for sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The communication manager 1520 may be configured as or otherwise support a component for receiving an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set, the number of computational resources being different from the number of physical resources associated with the CSI-RS resource set. The communication manager 1520 may be configured as or otherwise support a component for receiving a CJT CSI report for multiple TRPs, the CJT CSI report being based on the number of computational resources and the number of physical resources.

[0236] By including or configuring a communication manager 1520 according to examples as described herein, the device 1505 can support techniques for more efficiently utilizing communication resources. For example, the communication manager 1520 can support determining and reporting CSI based on the number of determined computing resources. The CSI can support CJT from multiple TRPs, which can more efficiently utilize communication resources, reduce overhead, improve communication quality, and increase available power.

[0237] In some examples, the communication manager 1520 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1510, one or more antennas 1515 (e.g., where applicable), or any combination thereof. For example, the communication manager 1520 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 1510. Although the communication manager 1520 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1520 may be supported or performed by the transceiver 1510, the processor 1535, the memory 1525, the code 1530, or any combination thereof. For example, the code 1530 may include instructions that can be executed by the processor 1535 to cause the device 1505 to perform various aspects of the CSI configuration for joint transmission from multiple TRPs as described herein, or the processor 1535 and the memory 1525 may be otherwise configured to perform or support such operations.

[0238] 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 11 The UE 115 described herein may be used to perform the functions described herein. In some examples, the UE may execute a set of instructions 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.

[0239] At 1605, the method may include receiving control signaling from a network entity indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. 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.10 The CSI-RS configuration component 1025 is performed. Additionally or alternatively, the components for performing 1605 may, but not necessarily include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140, and / or a bus 1145.

[0240] At 1610, the method may include sending to a network entity an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set that is different from a number of physical resources associated with the CSI-RS resource set. 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 to Fig.10 The UE capability indication component 1030 is used to perform. Additionally or alternatively, the components for performing 1610 may but need not include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140 and / or a bus 1145.

[0241] At 1615, the method may include sending a CJT CSI report for a plurality of TRPs determined based on the number of computing resources and the number of physical resources 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.10 The CSI-RS report indication component 1035 is executed. Additionally or alternatively, the components for executing 1615 may but need not include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140 and / or a bus 1145.

[0242] Fig.17A 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 UE or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 11 The UE 115 described herein may be used to perform the functions described herein. In some examples, the UE may execute a set of instructions 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.

[0243] At 1705, the method may include receiving from a network entity an indication of one or more codebooks for CJT from a plurality of TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain basis shared by the plurality of TRPs and including a codebook associated with a separate frequency domain basis for each TRP in the plurality of 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.10 Additionally or alternatively, the components for executing 1705 may, but need not necessarily include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140, and / or a bus 1145.

[0244] At 1710, the method may include receiving control signaling from a network entity indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. 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 to Fig.10 The CSI-RS configuration component 1025 is performed. Additionally or alternatively, the components for performing 1710 may, but not necessarily include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140, and / or a bus 1145.

[0245] At 1715, the method may include sending to a network entity an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set that is different from a number of physical resources associated with the 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.10The UE capability indication component 1030 is used to perform. Additionally or alternatively, the components for performing 1715 may but need not include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140 and / or a bus 1145.

[0246] At 1720, the method may include sending a CJT CSI report for a plurality of TRPs determined based on the number of computing resources and the number of physical resources to a network entity. The operations of 1720 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed as described in reference to Fig.10 The CSI-RS report indication component 1035 is executed. Additionally or alternatively, the components for executing 1720 may but need not include, for example, an antenna 1125, a transceiver 1115, a communication manager 1120, a memory 1130 (including code 1135), a processor 1140 and / or a bus 1145.

[0247] Fig.18 A 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 7 as well as Figures 12 to 15 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.

[0248] At 1805, the method may include sending control signaling to the UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. 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.14 The CSI-RS configuration is performed by the component 1425. Additionally or alternatively, the components for performing 1805 may but need not include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535 and / or a bus 1540.

[0249] At 1810, the method may include receiving an indication of a capability of the UE to support a number of computational resources for measuring a CSI-RS resource set that is different from a number of physical resources associated with the CSI-RS resource set. 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 to Fig.14 The resource capability component 1430 is used to perform. Additionally or alternatively, the components for performing 1810 may, but not necessarily include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535 and / or a bus 1540.

[0250] At 1815, the method may include receiving a CJT CSI report for a plurality of TRPs, the CJT CSI report being based on a number of computing resources and a number of physical resources. 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.14 The CSI-RS reporting component 1435 is performed. Additionally or alternatively, the components for performing 1810 may, but not necessarily include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535, and / or a bus 1540.

[0251] Fig.19 A flow chart illustrating a method 1900 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 1900 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1900 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 7 as well as Figures 12 to 15 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.

[0252] At 1905, the method may include sending an indication of one or more codebooks for CJT from a plurality of TRPs, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain basis shared by the plurality of TRPs and including a codebook associated with a separate frequency domain basis for each TRP in the plurality of TRPs. The operations of 1905 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1905 may be performed as described in reference to Fig.14The codebook indicates component 1440 to perform. Additionally or alternatively, the components for performing 1905 may but need not include, for example, antenna 1515, transceiver 1510, communication manager 1520, memory 1525 (including code 1530), processor 1535 and / or bus 1540.

[0253] At 1910, the method may include sending control signaling to the UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set. The operations of 1910 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1910 may be performed as described in reference to Fig.14 The CSI-RS configuration is performed by the component 1425. Additionally or alternatively, the components for performing 1910 may but need not include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535 and / or a bus 1540.

[0254] At 1915, the method may include receiving an indication of the UE's ability to support a number of computational resources for measuring a CSI-RS resource set that is different from a number of physical resources associated with the CSI-RS resource set. The operations of 1915 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1915 may be performed as described in reference to Fig.14 The resource capability component 1430 is used to perform. Additionally or alternatively, the components for performing 1915 may, but not necessarily include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535 and / or a bus 1540.

[0255] At 1920, the method may include receiving a CJT CSI report for a plurality of TRPs, the CJT CSI report being based on a number of computing resources and a number of physical resources. The operations of 1920 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1920 may be performed as described in reference to Fig.14 The CSI-RS reporting component 1435 is performed. Additionally or alternatively, the components for performing 1920 may, but not necessarily include, for example, an antenna 1515, a transceiver 1510, a communication manager 1520, a memory 1525 (including code 1530), a processor 1535, and / or a bus 1540.

[0256] The following provides an overview of various aspects of the disclosure:

[0257] Aspect 1: A method for performing wireless communications at a UE, the method comprising: receiving control signaling from a network entity, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating the number of physical resources associated with the CSI-RS resource set; sending to the network entity an indication of the UE's ability to support a number of computing resources for measuring the CSI-RS resource set, the number of computing resources being different from the number of physical resources associated with the CSI-RS resource set; and sending to the network entity CJT CSI reports for the multiple TRPs determined at least in part based on the number of computing resources and the number of physical resources.

[0258] Aspect 2: According to the method described in Aspect 1, the method further includes: receiving the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the CSI-RS resource set; and sending the indication of the capability to the UE at least partially based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources is one computing resource for measuring the CSI-RS resource set.

[0259] Aspect 3: The method according to Aspect 2, wherein the number of the two or more physical resources is equal to the number of the multiple TRPs.

[0260] Aspect 4: According to the method described in Aspect 1, the method further includes: receiving the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the CSI-RS resource set; and sending the indication of the capability of the UE based at least in part on the number of ports used for the multiple TRPs, the threshold number of ports, and the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set is two or more computing resources.

[0261] Aspect 5: The method according to Aspect 4, wherein the number of the two or more physical resources is equal to the number of the plurality of TRPs.

[0262] Aspect 6: According to the method described in Aspect 1, the method further includes: receiving the control signaling, the control signaling indicating that the number of physical resources is one or more physical resources associated with the CSI-RS resource set, and the number of the one or more physical resources is less than the number of the multiple TRPs; and sending the indication of the capability to the UE based at least in part on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set is equal to the number of the multiple TRPs.

[0263] Aspect 7: The method according to Aspect 6, wherein the number of the one or more physical resources is 1.

[0264] Aspect 8: The method according to Aspect 1, wherein the number of active physical resources is equal to the number of the physical resources multiplied by the number of hypotheses used to select a TRP from the plurality of TRPs.

[0265] Aspect 9: The method according to aspect 8, wherein the number of the physical resources is equal to the number of port groups of the plurality of TRPs, each of the port groups being associated with the same number of ports.

[0266] Aspect 10: The method according to any one of aspects 8 to 9, wherein the number of the physical resources is equal to the number of CSI resources of the CSI-RS resource set, and each of the CSI resources is associated with the same number of ports.

[0267] Aspect 11: A method according to any one of Aspects 8 to 10, wherein the number of computing resources is based at least in part on: the number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP among the multiple TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with the corresponding hypotheses corresponding to one or more TRPs among the multiple TRPs.

[0268] Aspect 12: The method according to aspect 11, the method further comprising: sending an indication of the one or more corresponding coefficients, wherein the one or more corresponding coefficients are based at least in part on the capabilities of the UE.

[0269] Aspect 13: According to the method described in any one of Aspects 1 to 12, the method further includes: receiving an indication of one or more codebooks for CJT from the multiple TRPs from the network entity, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain base shared by the multiple TRPs, and including a codebook associated with a separate frequency domain base for each TRP in the multiple TRPs.

[0270] Aspect 14: According to the method described in any one of Aspects 1 to 12, the method further includes: sending an indication of one or more codebooks for CJT from the multiple TRPs to the network entity, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain base shared by the multiple TRPs, and including a codebook associated with a separate frequency domain base for each TRP in the multiple TRPs.

[0271] Aspect 15: A method for performing wireless communications at a network entity, the method comprising: sending control signaling to a UE, the control signaling indicating a configuration of a CSI-RS resource set for CJT CSI reporting for multiple TRPs, the configuration indicating a number of physical resources associated with the CSI-RS resource set; receiving an indication of the UE's ability to support a number of computing resources for measuring the CSI-RS resource set, the number of computing resources being different from the number of physical resources associated with the CSI-RS resource set; and receiving CJT CSI reports for the multiple TRPs, the CJT CSI reports being based at least in part on the number of computing resources and the number of physical resources.

[0272] Aspect 16: According to the method described in Aspect 15, the method also includes: sending the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the CSI-RS resource set; and receiving the indication of the capability of the UE at least partially based on the number of physical resources being two or more physical resources, the indication indicating that the number of computing resources is one computing resource for measuring the CSI-RS resource set.

[0273] Aspect 17: The method according to Aspect 16, wherein the number of the two or more physical resources is equal to the number of the plurality of TRPs.

[0274] Aspect 18: According to the method described in Aspect 15, the method also includes: sending the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the CSI-RS resource set; and receiving the indication of the capability of the UE, the indication indicating that the number of computing resources used to measure the CSI-RS resource set is two or more computing resources, wherein the number of computing resources is at least partially based on the number of ports used for the multiple TRPs, the threshold number of ports, and the number of physical resources is two or more physical resources.

[0275] Aspect 19: The method according to Aspect 18, wherein the number of the two or more physical resources is equal to the number of the plurality of TRPs.

[0276] Aspect 20: According to the method described in Aspect 15, the method also includes: sending the control signaling, the control signaling indicating that the number of physical resources is one or more physical resources associated with the CSI-RS resource set, and the number of the one or more physical resources is less than the number of the multiple TRPs; and receiving the indication of the capability of the UE based at least in part on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the CSI-RS resource set is equal to the number of the multiple TRPs.

[0277] Aspect 21: The method according to Aspect 20, wherein the number of the one or more physical resources is 1.

[0278] Aspect 22: The method according to Aspect 15, wherein the number of active physical resources is equal to the number of the physical resources multiplied by the number of hypotheses used to select a TRP from the plurality of TRPs.

[0279] Aspect 23: The method according to Aspect 22, wherein the number of the physical resources is equal to the number of port groups of the plurality of TRPs, each of the port groups being associated with the same number of ports.

[0280] Aspect 24: The method according to any one of aspects 22 to 23, wherein the number of the physical resources is equal to the number of CSI resources of the CSI-RS resource set, and each of the CSI resources is associated with the same number of ports.

[0281] Aspect 25: A method according to any one of Aspects 22 to 24, wherein the number of computing resources is based at least in part on: the number of hypotheses associated with a single TRP transmission; one or more numbers of hypotheses for selecting a TRP among the multiple TRPs; and one or more corresponding coefficients corresponding to the number of TRPs associated with the corresponding hypotheses corresponding to one or more TRPs among the multiple TRPs.

[0282] Aspect 26: The method according to aspect 25, the method further comprising: receiving an indication of the one or more corresponding coefficients, wherein the one or more corresponding coefficients are based at least in part on the capabilities of the UE.

[0283] Aspect 27: According to the method described in any one of Aspects 15 to 26, the method further includes: sending an indication of one or more codebooks for CJT from the multiple TRPs, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain base shared by the multiple TRPs, and including a codebook associated with a separate frequency domain base for each TRP in the multiple TRPs.

[0284] Aspect 28: According to the method described in any one of Aspects 15 to 26, the method further includes: receiving an indication of one or more codebooks for CJT from the multiple TRPs, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks including a codebook associated with a frequency domain base shared by the multiple TRPs, and including a codebook associated with a separate frequency domain base for each TRP in the multiple TRPs.

[0285] Aspect 29: 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 execute a method according to any one of Aspects 1 to 14.

[0286] Aspect 30: An apparatus for wireless communication at a UE, the apparatus comprising at least one component for performing a method according to any one of aspects 1 to 14.

[0287] Aspect 31: 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 a method according to any one of aspects 1 to 14.

[0288] Aspect 32: An apparatus for wireless communication, the apparatus comprising: a memory; and at least one processor, the at least one processor coupled to the memory, the at least one processor configured to perform the method according to any one of aspects 15 to 28.

[0289] Aspect 33: An apparatus for wireless communication at a network entity, the apparatus comprising at least one component for performing a method according to any one of aspects 15 to 28.

[0290] Aspect 34: 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 15 to 28.

[0291] 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. In addition, aspects of two or more of the methods described may be combined.

[0292] 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.

[0293] 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.

[0294] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic components, 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, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0295] 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.

[0296] 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 components 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.In addition, 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. As used herein, disks and optical disks include CDs, laser disks, 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.

[0297] 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."

[0298] 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.

[0299] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number regardless of the second reference number, or other subsequent reference numbers.

[0300] 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.

[0301] 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: receiving control signaling from a network entity, the control signaling indicating a configuration of a channel state information reference signal resource set for coherently jointly transmitting a channel state information report for a plurality of transmission reception points, the configuration indicating a number of physical resources associated with the channel state information reference signal resource set; sending, to the network entity, an indication of a capability of the UE to support a number of computational resources for measuring the set of channel state information reference signal resources, the number of computational resources being different from the number of physical resources associated with the set of channel state information reference signal resources; as well as A coherent joint transmit channel state information report is transmitted to the network entity for the plurality of transmit-receive points determined based at least in part on the number of computing resources and the number of physical resources.

2. The method according to claim 1, further comprising: receiving the control signaling indicating that the number of physical resources is two or more physical resources associated with the channel state information reference signal resource set; as well as The indication of the capability of the UE is sent based at least in part on the number of physical resources being two or more physical resources, the indication indicating that the number of computational resources is one computational resource for measuring the set of channel state information reference signal resources. 3 . The method according to claim 2 , wherein the number of the two or more physical resources is equal to the number of the plurality of transmission and reception points.

4. The method according to claim 1, further comprising: receiving the control signaling indicating that the number of physical resources is two or more physical resources associated with the channel state information reference signal resource set; as well as The indication of the capability of the UE is sent at least in part based on the number of ports used for the multiple transmit / receive points, the threshold number of ports, and the number of physical resources being two or more physical resources, wherein the indication indicates that the number of computing resources used to measure the channel state information reference signal resource set is two or more computing resources. The method according to claim 4 , wherein the number of the two or more physical resources is equal to the number of the plurality of transmission and reception points.

6. The method according to claim 1, further comprising: receiving the control signaling, wherein the control signaling indicates that the number of the physical resources is one or more physical resources associated with the channel state information reference signal resource set, and the number of the one or more physical resources is less than the number of the multiple transmission and reception points; as well as The indication of the capability of the UE is sent at least in part based on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the channel state information reference signal resource set is equal to the number of the multiple transmit / receive points. The method according to claim 6 , wherein the number of the one or more physical resources is 1.

8. The method of claim 1, wherein the number of active physical resources is equal to the number of the physical resources multiplied by the number of hypotheses used to select the transmission and reception points among the plurality of transmission and reception points.

9. The method according to claim 8, wherein the number of the physical resources is equal to the number of port groups of the plurality of transmission and reception points, each of the port groups being associated with the same number of ports.

10. The method of claim 8, wherein the number of the physical resources is equal to the number of channel state information resources of the channel state information reference signal resource set, the channel state information resources being each associated with the same number of ports.

11. A method according to claim 1, wherein the number of computing resources is based at least in part on: the number of hypotheses associated with a single sending receiving point; one or more numbers of hypotheses for selecting a sending receiving point among the multiple sending receiving points; and one or more corresponding coefficients, wherein the one or more corresponding coefficients correspond to the number of TRPs associated with the corresponding hypotheses corresponding to one or more sending receiving points among the multiple sending receiving points.

12. The method according to claim 11, further comprising: An indication of the one or more corresponding coefficients is sent, wherein the one or more corresponding coefficients are based at least in part on capabilities of the UE.

13. The method according to claim 1, further comprising: An indication of one or more codebooks for coherent joint transmission from the plurality of transmit / receive points is received from the network entity, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks comprising a codebook associated with a frequency domain basis shared by the plurality of transmit / receive points and comprising a codebook associated with a separate frequency domain basis for each transmit / receive point in the plurality of transmit / receive points.

14. The method according to claim 1, further comprising: sending, to the network entity, an indication of one or more codebooks for coherent joint transmission from the plurality of transmit reception points, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks comprising a codebook associated with a frequency domain basis shared by the plurality of transmit reception points and comprising a codebook associated with a separate frequency domain basis for each transmit reception point in the plurality of transmit reception points.

15. A method for wireless communication at a network entity, the method comprising: sending control signaling to a user equipment (UE), the control signaling indicating a configuration of a channel state information reference signal resource set for coherently jointly transmitting a channel state information report for a plurality of transmission reception points, the configuration indicating a number of physical resources associated with the channel state information reference signal resource set; receiving an indication of a capability of the UE to support a number of computational resources for measuring the set of channel state information reference signal resources, the number of computational resources being different from the number of physical resources associated with the set of channel state information reference signal resources; as well as A coherent jointly transmitted channel state information report is received for the plurality of transmit / receive points, the coherent jointly transmitted channel state information report being based at least in part on the number of the computational resources and the number of the physical resources.

16. The method according to claim 15, further comprising: Sending the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the channel state information reference signal resource set; as well as The indication of the capability of the UE is received based at least in part on the number of physical resources being two or more physical resources, the indication indicating that the number of computational resources is one computational resource for measuring the set of channel state information reference signal resources.

17. The method according to claim 16, wherein the number of the two or more physical resources is equal to the number of the plurality of transmission and reception points.

18. The method according to claim 15, further comprising: Sending the control signaling, the control signaling indicating that the number of physical resources is two or more physical resources associated with the channel state information reference signal resource set; as well as Receive the indication of the capability of the UE, the indication indicating that the number of computing resources used to measure the channel state information reference signal resource set is two or more computing resources, wherein the number of computing resources is at least partially based on the number of ports used for the multiple transmit / receive points, the threshold number of ports, and the number of physical resources is two or more physical resources.

19. The method according to claim 18, wherein the number of the two or more physical resources is equal to the number of the plurality of transmission and reception points.

20. The method according to claim 15, further comprising: Sending the control signaling, where the control signaling indicates that the number of the physical resources is one or more physical resources associated with the channel state information reference signal resource set, and the number of the one or more physical resources is less than the number of the multiple transmission and reception points; as well as The indication of the capability of the UE is received at least in part based on the number of physical resources being one or more physical resources, the indication indicating that the number of computing resources used to measure the channel state information reference signal resource set is equal to the number of the multiple transmit / receive points. The method of claim 20 , wherein the number of the one or more physical resources is 1.

22. The method of claim 15, wherein the number of active physical resources is equal to the number of physical resources multiplied by the number of hypotheses used to select the transmission and reception points among the plurality of transmission and reception points.

23. The method of claim 22, wherein the number of the physical resources is equal to the number of port groups of the plurality of transmission / reception points, the port groups being each associated with the same number of ports.

24. The method of claim 22, wherein the number of the physical resources is equal to the number of channel state information resources of the set of channel state information reference signal resources, the channel state information resources being each associated with the same number of ports.

25. A method according to claim 15, wherein the number of computing resources is based at least in part on: the number of hypotheses associated with a single sending receiving point; one or more numbers of hypotheses for selecting a sending receiving point from among the multiple sending receiving points; and one or more corresponding coefficients corresponding to the number of TRPs associated with corresponding hypotheses corresponding to one or more sending receiving points from among the multiple sending receiving points.

26. The method according to claim 25, further comprising: An indication of the one or more corresponding coefficients is received, wherein the one or more corresponding coefficients are based at least in part on capabilities of the UE.

27. The method according to claim 15, further comprising: and transmitting an indication of one or more codebooks for coherent joint transmission from the plurality of transmit-receive points, the one or more codebooks being selected from a set of two or more codebooks, the set of two or more codebooks comprising a codebook associated with a frequency domain basis shared by the plurality of transmit-receive points and comprising a codebook associated with a separate frequency domain basis for each transmit-receive point in the plurality of transmit-receive points.

28. The method of claim 15, further comprising: receiving an indication of one or more codebooks for coherent joint transmission from the plurality of transmit reception points, the one or more codebooks selected from a set of two or more codebooks, the set of two or more codebooks comprising a codebook associated with a frequency domain basis shared by the plurality of transmit reception points and comprising a codebook associated with a separate frequency domain basis for each transmit reception point in the plurality of transmit reception points.

29. 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: receiving, via the transceiver, control signaling from a network entity, the control signaling indicating a configuration of a set of channel state information reference signal resources for coherently jointly transmitting channel state information reports for a plurality of transmission and reception points, The configuration indicates a number of physical resources associated with the channel state information reference signal resource set; sending, via the transceiver, to the network entity an indication of a capability of the UE to support a number of computational resources for measuring the set of channel state information reference signal resources, the number of computational resources being different from the number of physical resources associated with the set of channel state information reference signal resources; as well as A coherent joint transmit channel state information report for the plurality of transmit-receive points determined based at least in part on the number of computing resources and the number of physical resources is transmitted to the network entity via the transceiver.

30. An apparatus for wireless communication at a network entity, the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: sending control signaling to a user equipment (UE), the control signaling indicating a configuration of a channel state information reference signal resource set for coherently jointly transmitting a channel state information report for a plurality of transmission reception points, the configuration indicating a number of physical resources associated with the channel state information reference signal resource set; receiving an indication of a capability of the UE to support a number of computational resources for measuring the set of channel state information reference signal resources, the number of computational resources being different from the number of physical resources associated with the set of channel state information reference signal resources; as well as A coherent jointly transmitted channel state information report is received for the plurality of transmit / receive points, the coherent jointly transmitted channel state information report being based at least in part on the number of the computational resources and the number of the physical resources.

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