WO2021146992A1

WO2021146992A1 - Joint channel state information (csi) reporting using csi sub-reports for multiple transmit receive points

Info

Publication number: WO2021146992A1
Application number: PCT/CN2020/073756
Authority: WO
Inventors: Qiaoyu Li; Chenxi HAO; Yu Zhang; Liangming WU; Chao Wei; Hao Xu
Original assignee: Qualcomm Incorporated
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2021-07-29

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure multiple CSI-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, and/or different RI groups; and transmit a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, and/or the different RI groups. Numerous other aspects are provided.

Description

JOINT CHANNEL STATE INFORMATION (CSI) REPORTING USING CSI SUB-REPORTS FOR MULTIPLE TRANSMIT RECEIVE POINTS

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for performing joint channel state information (CSI) reporting using CSI sub-reports for multiple transmit receive points.

BACKGROUND

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like) . Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .

A wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) . A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR) , which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) . NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, there exists a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a user equipment (UE) , may include measuring multiple channel state information (CSI) reference signals (CSI-RSs) , wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CSI-RS resource indicators (CRIs) , different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different channel quality indicator (CQI) groups, different precoding matrix indicator(PMI) groups, or different rank indicator (RI) groups; and transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.

In some aspects, a UE for wireless communication may include memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to measure multiple CSR-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups; and transmit a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: measure multiple CSR-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups; and transmit a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.

In some aspects, an apparatus for wireless communication may include means for measuring multiple CSR-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups; and means for transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.

The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 2 is a block diagram conceptually illustrating an example of a base station in communication with a UE in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 3 illustrates an example logical architecture of a distributed radio access network (RAN) , in accordance with various aspects of the present disclosure.

Fig. 4 is a diagram illustrating an example of multi-TRP communication, in accordance with various aspects of the present disclosure.

Fig. 5 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 6 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 7 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 8 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 9 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 10 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 11 is a diagram illustrating an example of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

Fig. 12 is a diagram illustrating an example process performed, for example, by a user equipment, in accordance with various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and/or the like (collectively referred to as “elements” ) . These elements may be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that while aspects may be described herein using terminology commonly associated with 3G and/or 4G wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems, such as 5G and later, including NR technologies.

Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) . A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in Fig. 1, a BS 110a may be a macro BS for a macro cell 102a, a BS 110b may be a pico BS for a pico cell 102b, and a BS 110c may be a femto BS for a femto cell 102c. A BS may support one or multiple (e.g., three) cells. The terms “eNB” , “base station” , “NR BS” , “gNB” , “TRP” , “AP” , “node B” , “5G NB” , and “cell” may be used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some aspects, the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.

Wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) . A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in Fig. 1, a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.

Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts) .

A network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs. Network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.

UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like. A UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device) , or some other entity. A wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered a Customer Premises Equipment (CPE) . UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.

In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, an air interface, and/or the like. A frequency may also be referred to as a carrier, a frequency channel, and/or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) . For example, the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like. In this case, the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.

As indicated above, Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.

Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T ≥ 1 and R ≥ 1.

At base station 110, a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) . A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information.

At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280. A channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , CQI, and/or the like. In some aspects, one or more components of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110. At base station 110, the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240. Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244. Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 1200 of Fig. 12 and/or other processes as described herein.

Memories

242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station 110 and/or the UE 120, may perform or direct operations of, for example, process 1200 of Fig. 12 and/or other processes as described herein. A scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.

In some aspects, UE 120 may include means for measuring CSI-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups; means for transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups; and/or the like. In some aspects, such means may include one or more components of UE 120 described in connection with Fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.

As indicated above, Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.

Fig. 3 illustrates an example logical architecture of a distributed RAN 300, according to aspects of the present disclosure.

A 5G access node 306 may include an access node controller (ANC) 302. The ANC 302 may be a central unit (CU) of the distributed RAN 300. The backhaul interface to the next generation core network (NG-CN) 304 may terminate at the ANC 302. The backhaul interface to neighboring next generation access nodes (NG-ANs) may terminate at the ANC 302. The ANC 302 may include one or more TRPs 308 (which may also be referred to as BSs, NR BSs, Node Bs, 5G NBs, APs, gNB, or some other term) . A TRP 308 may be used interchangeably with “cell” and/or “panel. ” In some aspects, multiple TRPs 308 may be included in a single base station 110. Additionally, or alternatively, different TRPs 308 may be included in different base stations 110.

A TRP 308 may be a distributed unit (DU) . A TRP 308 may be connected to a single ANC 302 or multiple ANCs 302. For example, for RAN sharing, radio as a service (RaaS) , and service specific AND deployments, the TRP 308 may be connected to more than one ANC 302. A TRP 308 may include one or more antenna ports. The TRPs 308 may be configured to individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission) serve traffic to a UE 120.

In some aspects, multiple TRPs 308 may transmit communications (e.g., the same communication or different communications) in the same transmission time interval (TTI) or different TTIs (e.g., slots, mini-slots, and/or the like) using different QCL relationships (e.g., different spatial parameters, different transmission configuration indicator (TCI) states, different precoding parameters, different beamforming parameters, and/or the like) . In some aspects, a TCI state may be used to indicate one or more QCL relationships.

The local architecture of RAN 300 may be used to illustrate fronthaul definition. The architecture may be defined to support fronthauling solutions across different deployment types. For example, the architecture may be based at least in part on transmit network capabilities (e.g., bandwidth, latency, and/or jitter) . The architecture may share features and/or components with LTE. According to aspects, the next generation AN (NG-AN) 310 may support dual connectivity with NR. The NG-AN 310 may share a common fronthaul for LTE and NR. The architecture may enable cooperation between and among TRPs 308. For example, cooperation may be preset within a TRP 308 and/or across TRPs 308 via the ANC 302. In some aspects, no inter-TRP interface may be needed/present.

In some aspects, a dynamic configuration of split logical functions may be present within the architecture of RAN 300. The packet data convergence protocol (PDCP) , radio link control (RLC) , media access control (MAC) protocol, and/or the like may be adaptably placed at the ANC 302 or TRP 308. According to various aspects, a base station 110 may include a central unit (CU) (e.g., ANC 302) and/or one or more distributed units (e.g., one or more TRPs 308) .

As indicated above, Fig. 3 is provided merely as an example. Other examples may differ from what is described with regard to Fig. 3.

Fig. 4 is a diagram illustrating an example 400 of multi-TRP communication (sometimes referred to as multi-panel communication) , in accordance with various aspects of the present disclosure.

As shown in Fig. 4, multiple TRPs 308 (shown as TRP A and TRP B) may communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multipoint transmissions and/or the like) to improve reliability, increase throughput, and/or the like. The TRPs 308 may coordinate such communications via a backhaul, which may have a smaller delay and/or higher capacity when the TRPs 308 are co-located at the same base station 110 (e.g., different antenna arrays of the same base station 110) , or may have a larger delay and/or lower capacity (as compared to co-location) when the TRPs 308 are located at different base stations 110. The different TRPs 308 may communicate with the UE 120 using different QCL relationships (e.g., different TCI states) , different demodulation reference signal (DMRS) ports, different layers (e.g., of a multi-layer communication) , and/or the like.

In a first multi-TRP transmission mode (e.g., Mode 1) , a single physical downlink control channel (PDCCH) may be used to schedule downlink data communications for a single physical downlink shared channel (PDSCH) . In this case, multiple TRPs 308 (e.g., TRP A and TRP B) may transmit communications to the UE 120 on the same PDSCH. For example, a communication may be transmitted using a single codeword with different spatial layers for different TRPs 308 (e.g., where one codeword maps to a first set of layers transmitted by a first TRP 308 and maps to a second set of layers transmitted by a second TRP 308) . As another example, a communication may be transmitted using multiple codewords, where different codewords are transmitted by different TRPs 308 (e.g., using different sets of layers) . In either case, different TRPs 308 may use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, a first TRP 308 may use a first QCL relationship or a first TCI state for a first set of DMRS ports corresponding to a first set of layers, and a second TRP 308 may use a second (different) QCL relationship or a second (different) TCI state for a second (different) set of DMRS ports corresponding to a second (different) set of layers. In some aspects, a TCI state in downlink control information (DCI) (e.g., transmitted on the PDCCH, such as DCI format 1_0, DCI format 1_1, and/or the like) may indicate the first QCL relationship (e.g., by indicating a first TCI state) and the second QCL relationship (e.g., by indicating a second TCI state) . The first and the second TCI states may be indicated using a TCI field in the DCI. In general, the TCI field can indicate a single TCI state (for single-TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed here) in this multi-TRP transmission mode (e.g., Mode 1) .

In a second multi-TRP transmission mode (e.g., Mode 2) , multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH for each PDSCH) . In this case, a first PDCCH may schedule a first codeword to be transmitted by a first TRP 308, and a second PDCCH may schedule a second codeword to be transmitted by a second TRP 308. Furthermore, first DCI (e.g., transmitted by the first TRP 308) may schedule a first PDSCH communication associated with a first set of DMRS ports with a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 308, and second DCI (e.g., transmitted by the second TRP 308) may schedule a second PDSCH communication associated with a second set of DMRS ports with a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 308. In this case, DCI (e.g., having DCI format 1_0, DCI format 1_1, and/or the like) may indicate a corresponding TCI state for a TRP 308 corresponding to the DCI. The TCI field of a DCI indicates the corresponding TCI state (e.g., the TCI field of the first DCI indicates the first TCI state and the TCI field of the second DCI indicates the second TCI state) .

As indicated above, Fig. 4 is provided as an example. Other examples may differ from what is described with respect to Fig. 4.

In some systems for multi-TRP transmission, a UE may receive CSI-RSs for one or more TRPs. The network may specify CSI reporting for downlink (DL) multi-TRP and/or multi-panel transmission to enable dynamic channel interference hypotheses for non-coherent joint transmissions (NCJTs) . The UE may transmit multiple CSI reports for the multiple TRPs based on receiving multiple radio resource control (RRC) configurations and/or triggering DCI communications. Overhead from transmitting the multiple RRC configurations and/or triggering DCI communications may consume network resources. Additionally, if multiple CSI reports are multiplexed with uplink share channel (UL-SCH) data onto physical uplink shared channel (PUSCH) slots, a payload size of the multiple CSI reports may be large compared to a number of resources (e.g., REs) of the PUSCH slots, such that a number of remaining resources available for UL-SCH data may be limited. Based on having a limited number of remaining resources available for UL-SCH data, the network may schedule additional PUSCH resources for the UE, which may consume additional network resources with DCI overhead to schedule the additional PUSCH resources.

In some aspects, a UE (e.g., UE 120) may measure multiple CSI-RSs, with different CSI-RSs being associated with different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, different RI groups, different TRPs, and/or the like. The UE may transmit a single CSI report (e.g., based at least in part on a single DCI communication) in one or more uplink resources (e.g., PUSCH slots, portions of PUSCH slots, and/or the like) , with the single CSI report including multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs. Different CSI sub-reports of the multiple CSI sub-reports may be associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, the different RI groups, the different TRPs and/or the like. Based at least in part on transmitting a single CSI report, the network conserves network resources that would otherwise be consumed with overhead from scheduling multiple CSI reports and/or scheduling additional PUSCH resources for UL-SCH data.

Fig. 5 is a diagram illustrating an example 500 of performing joint CSI reporting using CSI sub-reports for multiple TRPs, in accordance with various aspects of the present disclosure. Fig. 5 shows multiple TRPs, including TRP A 505 and TRP B 510, communicating CSI-RSs and one or more CSI reports with UE 120.

As shown by reference number 515, UE 120 receives a CSI-RS for TRP A 505 from the multiple TRPs (e.g., from TRP A 505) . As shown by reference number 520, UE 120 also receives a CSI-RS for TRP B from the multiple TRPs (e.g., from TRP B 510) . As shown by reference number 525, the CSI-RS for TRP A and the CSI-RS for TRP B may be associated with different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, different RI groups, different TRPs, and/or the like.

As shown by reference number 530, UE 120 may measure the multiple CSI-RSs and calculate CSI sub-reports based at least in part on measuring the multiple CSI-RSs. In some aspects, UE 120 may calculate a CSI sub-report for each TRP, each CSI- RS, and/or the like. In some aspects, different CSI sub-reports of the multiple CSI sub-reports may be associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, the different RI groups, the different TRPs, and/or the like.

As shown by reference number 535, UE 120 may transmit a single CSI report, that includes the multiple CSI sub-reports, in one or more uplink resources and/or slots. In some aspects, the single CSI report may be configured based at least in part on a single RRC configuration, may be triggered by a single DCI communication, and/or the like.

As shown by reference number 540, UE 120 may transmit the single CSI report within a single PUSCH slot. In some aspects, the single CSI report may be multiplexed onto the single PUSCH slot (e.g., using time-division multiplexing) .Although Fig. 5 shows an example PUSCH slot with a hybrid automatic repeat request acknowledgement (HARQ-ACK) , the single CSI report, and UL data, other examples may differ from what is shown in Fig. 5. In some aspects, the PUSCH slot may have no UL data (e.g., based at least in part on a size of the single CSI report) .

As shown by reference number 535, the single CSI report may span multiple PUSCH slots. In some aspects, the single CSI report may be multiplexed onto the multiple PUSCH slots (e.g., using time-division multiplexing) . Although Fig. 5 shows an example of UE 120 transmitting the CSI report within two PUSCH slots, UE 120 may transmit the CSI report within more than two PUSCH slots. In some aspects, the multiple slots may have no UL data (e.g., based at least in part on a size of the single CSI report) .

As indicated above, Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.

Fig. 6 is a diagram illustrating an example 600 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

As shown by reference number 605, UE 120 may be configured (e.g., based at least in part on RRC signaling) to determine one or more slots for transmitting the single CSI report based at least in part on an RRC configuration (e.g., a single RRC configuration) associated with the single CSI report and a triggering DCI communication (e.g., an uplink grant that triggers the single CSI report) . In some aspects, the RRC configuration may identify one or more offsets, from the triggering DCI communication, for transmitting the single CSI report. For example, the RRC configuration may define the one or more offsets for transmitting the CSI report explicitly (e.g., offset = X, X+1, and/or the like) or implicitly (e.g., offset = X, with the transmission spanning Y slots) . Based at least in part on a slot in which UE 120 receives the triggering DCI communication that triggers the CSI report, UE 120 may determine the one or more slots for transmitting the single CSI report (e.g., X, X+1, and/or the like slots after receiving the triggering DCI communication) . In some aspects, the triggering DCI communication has no indication of slot offsets.

As shown by reference number 610, the triggering DCI communication (e.g., a single uplink grant that triggers the single CSI report) may indicate the one or more offsets. In some aspects, the RRC configuration may not identify the one or more offsets for transmitting the single CSI report. In some aspects, the triggering DCI communication may override an identification of the one or more offsets in the RRC configuration.

As shown by reference number 615, UE 120 may receive the triggering DCI communication during a slot (e.g., slot #0 (zero) ) . The UE 120 may determine the different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, different RI groups, different TRPs, and/or the like and generate information for the single CSI report that includes the multiple CSI sub-reports. UE 120 may determine the one or more slots for transmitting the single CSI report based at least in part on the triggering DCI communication (e.g., based at least in part on a slot during which the triggering DCI communication is received, the one or more offsets, and/or the like) .

As shown by reference number 620, UE 120 may transmit the single CSI report during the one or more PUSCH slots (e.g., slot #X and slot #X+1) . For example, UE 120 may multiplex the single CSI report (e.g., including the CSI sub-reports) onto one or more PUSCH slots. Although Fig. 6 illustrates transmitting the single CSI report during two PUSCH slots, UE 120 may transmit the single CSI report during three or more PUSCH slots. Additionally, although the one or more PUSCH slots show UL data, in some aspects, the one or more PUSCH slots may have no UL data (e.g., based at least in part on a size of the single CSI report) .

As indicated above, Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.

Fig. 7 is a diagram illustrating an example 700 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

As shown in Fig. 7, and by reference number 705, UE 120 may transmit the single CSI report using a same time domain resource allocation (TDRA) during multiple PUSCH slots. For example, UE 120 may transmit the single CSI report during each of the multiple PUSCH slots using a same starting symbol of the respective PUSCH slots and/or with a same length (e.g., quantity of symbols) of the respective PUSCH slots. In some aspects, UE 120 may determine the starting symbol and/or the length based at least in part on a PUSCH configuration and/or a triggering DCI communication (e.g., a UL grant) .

As shown by reference number 710, UE 120 may transmit the single CSI report using different TDRAs during the multiple PUSCH slots. For example, UE 120 may transmit the single CSI report during the multiple PUSCH slots using different starting symbols of the respective PUSCH slots and/or with different lengths of the respective PUSCH slots. In some aspects, UE 120 may determine the starting symbols and/or the lengths based at least in part on a PUSCH configuration and/or a triggering DCI communication (e.g., a UL grant) . In some aspects, the different TDRAs may be based on a type of UL data buffered for transmission via the PUSCH, a size of the single CSI report, sizes of the multiple CSI sub-reports, and/or the like.

As indicated above, Fig. 7 is provided as an example. Other examples may differ from what is described with respect to Fig. 7.

Fig. 8 is a diagram illustrating an example 800 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

As shown in Fig. 8, and by reference number 805, UE 120 may transmit the single CSI report with different CSI sub-reports in different PUSCH slots. In some aspects, REs for different CSI sub-reports may be separately configured per sub-report and/or slot or may be jointly configured across slots. In some aspects, a number of resources (e.g., REs) available for a first CSI sub-report in a first PUSCH slot and a number of resources available for a second CSI sub-report in a second PUSCH slot are different and are separately configured for the first PUSCH slot and the second PUSCH slot. For example, the number of resources available for a first CSI sub-report in a first PUSCH slot and a number of resources available for a second CSI sub-report in a second PUSCH slot may be configured based at least in part on RRC signaling, a DCI communication, and/or the like.

In some aspects, UE 120 may multiplex a first CSI sub-report of the multiple CSI sub-reports onto a first PUSCH slot, a second CSI sub-report of the multiple CSI sub-reports onto a second PUSCH slot, and/or the like. In some aspects, each of the multiple CSI sub-reports may be transmitted during a different PUSCH slot of the multiple PUSCH slots. In some aspects, UE 120 may transmit more than one of the multiple sub-reports during a PUSCH slot, based at least in part on the sizes of the more than one of the multiple sub-reports fitting within the PUSCH slot (e.g., so that none of the more than one of the multiple sub-reports is transmitted during more than one PUSCH slot) .

As shown by reference number 810, UE 120 may multiplex the single CSI report with different CSI sub-reports in different PUSCH slots and with separate transport blocks (TBs) (e.g., TB #0 and TB #1) for UL data in the different PUSCH slots. In some aspects, TB sizes of the respective TBs may be determined based at least in part on respective numbers of resources remaining after multiplexing the multiple CSI sub-reports onto the respective PUSCH slots.

As shown by reference number 815, UE 120 may multiplex the single CSI report with different CSI sub-reports in different PUSCH slots and with a same TB (e.g., TB #0) for UL data in the different PUSCH slots. The TB size may be determined based at least in part on numbers of resources remaining after multiplexing the multiple CSI sub-reports onto the respective PUSCH slots. In some aspects, a number of resources available for the first CSI sub-report in the first PUSCH slot and a number of resources available for the second CSI sub-report in the second PUSCH slot are the same and/or are jointly configured for the first PUSCH slot and the second PUSCH slot. For example, the number of resources available for the first CSI sub-report in the first PUSCH slot and the number of resources available for the second CSI sub-report in the second PUSCH slot may be jointly configured based at least in part on RRC signaling, a DCI communication, and/or the like.

As indicated above, Fig. 8 is provided as an example. Other examples may differ from what is described with respect to Fig. 8.

Fig. 9 is a diagram illustrating an example 900 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

As shown in Fig 9, and by reference number 905, UE 120 may multiplex all of the multiple CSI sub-reports onto a single PUSCH slot based at least in part on the single PUSCH slot having a sufficient number of resources (e.g., REs) to carry all of the multiple CSI sub-reports.

As shown by reference number 910, UE 120 may multiplex the multiple CSI sub-reports onto multiple PUSCH slots based at least in part on a determination that a number of available resources (e.g., REs) in a single PUSCH slot is insufficient to carry the multiple CSI sub-reports. In some aspects, UE 120 may drop one or more CSI sub-reports, one or more portions of one or more CSI sub-reports, and/or a combination thereof based at least in part on a determination that a number of available resources in the multiple PUSCH slots is insufficient to carry the multiple CSI sub-reports. The one or more CSI sub-reports or the one or more portions may be dropped based at least in part on a priority order associated with the one or more CSI sub-reports or the one or more portions. In some aspects, the one or more CSI sub-reports or the one or more portions may be dropped based at least in part on an order in which UE 120 received corresponding CSR-RSs.

As indicated above, Fig. 9 is provided as an example. Other examples may differ from what is described with respect to Fig. 9.

Fig. 10 is a diagram illustrating an example 1000 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure.

As shown in Fig. 10, and by reference number 1005, UE 120 may multiplex the single CSI report, including the multiple CSI sub-reports, onto a first set of PUSCH slots of multiple PUSCH slots, and UE 120 may multiplex UL data (e.g., PUSCH data) in a second set of PUSCH slots of the multiple PUSCH slots. In some aspects, the first set of PUSCH slots may include at least one slot (e.g., slot #2) included in the second set of PUSCH slots. In other words, a PUSCH slot (e.g., slot #2) of the multiple PUSCH slots may include at least one sub-report of the single CSI report and at least one TB for UL data. In some aspects, the multiple PUSCH slots may not include any PUSCH slots that include both of a sub-report of the single CSI report and a TB for UL data.

As shown by reference number 1010, UE 120 may multiplex the multiple CSI sub-reports of the single CSI report in a first set of PUSCH slots of the multiple PUSCH slots. In some aspects, the first set of PUSCH slots may include one or more portions for transmitting a HARQ-ACK and/or UL data (e.g., via a TB) . The first set of PUSCH slots may include one or more PUSCH slots and/or portions of PUSCH slots.

As shown by reference number 1015, UE 120 may multiplex PUSCH data onto a second set of PUSCH slots of the multiple PUSCH slots. In some aspects, the second set of PUSCH slots may include one or more portions for transmitting a HARQ-ACK and/or the single CSI report.

UE 120 may multiplex the PUSCH data using respective TBs in multiple PUSCH slots (e.g., slots #2 and #3) . In some aspects, a TB size of each respective TB (e.g., TB #0 and TB #1) may be determined based at least in part on a number of resources (e.g., REs) available for the PUSCH data in a PUSCH slot, corresponding to the respective TB, after multiplexing a CSI sub-report onto the PUSCH slot.

In some aspects, a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is the same across each PUSCH slot of the first set of PUSCH slots and is jointly configured (e.g., for each of the PUSCH slots in the first set of PUSCH slots) . In some aspects, the joint configuration may comprise a joint configuration of a same ratio of a number of resources for transmitting the multiple CSI sub-reports to a number of available resources in each of the PUSCH slots of the first set of PUSCH slots. In some aspects, a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is different across at least two PUSCH slots of the first set of PUSCH slots and/or is separately configured for each PUSCH slot of the first set of PUSCH slots. The number of resources for the multiple CSI sub-reports in the first set of PUSCH slots may be configured via RRC signaling and/or a DCI communication.

As shown by reference number 1020, UE 120 may multiplex the single CSI report, including the multiple CSI sub-reports, onto a first set of PUSCH slots of multiple PUSCH slots, and UE 120 may multiplex UL data (PUSCH data) onto a second set of PUSCH slots of the multiple PUSCH slots. In some aspects, the first set of PUSCH slots may include at least one slot (e.g., slot #2) included in the second set of PUSCH slots. In other words, a PUSCH slot (e.g., slot #2) of the multiple PUSCH slots may include at least a last sub-report of the single CSI report and a first TB for UL data. In some aspects, the multiple PUSCH slots do not include any PUSCH slots that include both of a sub-report of the single CSI report and a TB for UL data.

As shown by reference 1025, UE 120 may multiplex the single CSI report onto a first set of PUSCH slots of the multiple PUSCH slots. In some aspects, the first set of PUSCH slots may include one or more portions for transmitting a HARQ-ACK and/or UL data (e.g., via a TB) . The first set of PUSCH slots may include one or more PUSCH slots and/or portions of PUSCH slots.

As shown by reference number 1030, UE 120 may multiplex PUSCH data onto a second set of PUSCH slots of the multiple PUSCH slots. In some aspects, the second set of PUSCH slots may include one or more portions for transmitting a HARQ-ACK and/or the single CSI report. In some aspects, UE 120 may transmit the PUSCH data using a single TB (e.g., TB #0) across multiple PUSCH slots, wherein a TB size of the single TB is determined based at least in part on a number of resources (e.g., resource elements (REs) ) available for the PUSCH data jointly across the multiple PUSCH slots after multiplexing the multiple CSI sub-reports in the first set of PUSCH slots. In some aspects, a number of resources available for multiplexing the multiple CSI sub-reports in each respective PUSCH slot may be separately configured or jointly configured (e.g., as a same ratio to a number of available resources in each PUSCH slot of the second set) .

As indicated above, Fig. 10 is provided as an example. Other examples may differ from what is described with respect to Fig. 10.

Fig. 11 is a diagram illustrating an example 1100 of performing joint CSI reporting using CSI sub-reports for multiple transmit receive points, in accordance with various aspects of the present disclosure. The multiple slots may include a first PUSCH slot (e.g., slot #2) and a second PUSCH slot (e.g., slot #1) . In some aspects, the two PUSCH slots may be scheduled based at least in part on a single DCI communication.

As shown in Fig. 11, and by reference number 1105, a first of two PUSCH slots may include a single CSI report (e.g., including multiple sub-reports) , without UL-SCH data. In some aspects, coding rates for the multiple CSI sub-reports may be determined based at least in part on a number of available resources in the first PUSCH slot.

As shown by reference number 1110, a second of the two PUSCH slots includes a single UL-SCH TB, without the multiple sub-reports. In some aspects, a size of the single UL-SCH TB is determined based at least in part on a number of available resources in the second PUSCH slot.

As indicated above, Fig. 11 is provided as an example. Other examples may differ from what is described with respect to Fig. 11.

Fig. 12 is a diagram illustrating an example process 1200 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 1200 is an example where the UE (e.g., UE 120 and/or the like) performs operations associated with joint CSI reporting using CSI sub-reports for multiple transmit receive points.

As shown in Fig. 12, in some aspects, process 1200 may include measuring multiple CSI-RSs, wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups (block 1210) . For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller/processor 280, and/or the like) may measure multiple CSR-RSs, as described above. In some aspects, different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CRIs, different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different CQI groups, different PMI groups, or different RI groups.

As further shown in Fig. 12, in some aspects, process 1200 may include transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups (block 1220) . For example, the UE (e.g., using controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, and/or the like) may transmit a single CSI report in one or more uplink resources, as described above. In some aspects, the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs. In some aspects, different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.

Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, the one or more uplink resources span multiple PUSCH slots.

In a second aspect, alone or in combination with the first aspect, multiple slot offsets, corresponding to the multiple PUSCH slots, are indicated in a radio resource control configuration associated with the single CSI report or in a single uplink grant that triggers the single CSI report.

In a third aspect, alone or in combination with one or more of the first and second aspects, the single CSI report is configured to be transmitted in a same starting symbol and with a same duration within each slot of the multiple PUSCH slots.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the single CSI report is multiplexed in the multiple PUSCH slots.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, each of the multiple CSI sub-reports is transmitted in a different PUSCH slot of the multiple PUSCH slots.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, a first CSI sub-report of the multiple CSI sub-reports is transmitted in a first PUSCH slot of the multiple PUSCH slots, and a second CSI sub-report of the multiple CSI sub-reports is transmitted in a second PUSCH slot of the multiple PUSCH slots.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, process 1200 includes transmitting PUSCH data using a first transport block (TB) in the first PUSCH slot and using a second TB in the second PUSCH slot, wherein a first TB size of the first TB is determined based at least in part on a number of REs available for the PUSCH data in the first PUSCH slot after multiplexing the first CSI sub-report in the first PUSCH slot, and a second TB size of the second TB is determined based at least in part on a number of REs available for the PUSCH data in the second PUSCH slot after multiplexing the second CSI sub-report in the second PUSCH slot.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process 1200 includes transmitting PUSCH data in a single TB in the first PUSCH slot and in the second PUSCH slot, wherein a TB size of the single TB is determined based at least in part on a number of resource elements available for the PUSCH data jointly across the first PUSCH slot and the second PUSCH slot after multiplexing the first CSI sub-report in the first PUSCH slot and after multiplexing the second CSI sub-report in the second PUSCH slot.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, a number of resources available for the first CSI sub-report in the first PUSCH slot and a number of resources available for the second CSI sub-report in the second PUSCH slot are the same and are jointly configured for the first PUSCH slot and the second PUSCH slot.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, a number of resources available for the first CSI sub-report in the first PUSCH slot and a number of resources available for the second CSI sub-report in the second PUSCH slot are different and are separately configured for the first PUSCH slot and the second PUSCH slot.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, all of the multiple CSI sub-reports are multiplexed in a single PUSCH slot.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the multiple CSI sub-reports are multiplexed in multiple PUSCH slots based at least in part on a determination that a number of available resource elements in a single PUSCH slot is insufficient to carry the multiple CSI sub-reports.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, process 1200 includes dropping one or more CSI sub-reports, one or more portions of one or more CSI sub-reports, or a combination thereof based at least in part on a determination that a number of available resource elements in the multiple PUSCH slots is insufficient to carry the multiple CSI sub-reports.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the one or more CSI sub-reports or the one or more portions are dropped based at least in part on a priority order associated with the one or more CSI sub-reports or the one or more portions.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the multiple CSI sub-reports are transmitted in a first set of PUSCH slots of multiple PUSCH slots, and PUSCH data is transmitted in a second set of PUSCH slots of the multiple PUSCH slots.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, the first set of PUSCH slots includes at least one slot included in the second set of PUSCH slots.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, the PUSCH data is transmitted using respective TBs in multiple PUSCH slots, and a TB size of each respective TB is determined based at least in part on a number of resource elements available for the PUSCH data in a PUSCH slot, corresponding to the respective TB, after multiplexing a CSI sub-report in the PUSCH slot.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the PUSCH data is transmitted using a single TB across multiple PUSCH slots, and a TB size of the single TB is determined based at least in part on a number of resource elements available for the PUSCH data jointly across the multiple PUSCH slots after multiplexing the multiple CSI sub-reports in the first set of PUSCH slots.

In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is the same across each PUSCH slot of the first set of PUSCH slots and is jointly configured for the first PUSCH slot and the second PUSCH slot.

In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is different across at least two PUSCH slots of the first set of PUSCH slots and is separately configured for each PUSCH slot of the first set of PUSCH slots.

In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, the one or more uplink resources include two PUSCH slots.

In a twenty-second aspect, alone or in combination with one or more of the first through twenty-first aspects, a first PUSCH slot, of the two PUSCH slots, includes the multiple CSI sub-reports and not UL-SCH data, and a second PUSCH slot, of the two PUSCH slots, includes UL-SCH data and not the multiple CSI sub-reports.

In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, a coding rate for the multiple CSI sub-reports is determined based at least in part on a number of available resource elements in the first PUSCH slot.

In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, the UL-SCH data is transmitted using a single TB, and a TB size of the single TB is determined based at least in part on a number of available resource elements in the second PUSCH slot.

Although Fig. 12 shows example blocks of process 1200, in some aspects, process 1200 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 12. Additionally, or alternatively, two or more of the blocks of process 1200 may be performed in parallel.

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

As used herein, the term “component” is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and/or a combination of hardware and software.

As used herein, satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.

It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware, firmware, and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to specific software code-it being understood that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. A phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and may be used interchangeably with “one or more. ” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, and/or the like) , and may be used interchangeably with “one or more. ” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has, ” “have, ” “having, ” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

Claims

Amethod of wireless communication performed by a user equipment (UE) , comprising:

measuring multiple channel state information (CSI) reference signals (CSI-RSs) , wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CSI-RS resource indicators (CRIs) , different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different channel quality indicator (CQI) groups, different precoding matrix indicator (PMI) groups, or different rank indicator (RI) groups; and

transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.
The method of claim 1, wherein the one or more uplink resources span multiple physical uplink shared channel (PUSCH) slots.
The method of claim 2, wherein multiple slot offsets, corresponding to the multiple PUSCH slots, are indicated in a radio resource control configuration associated with the single CSI report or in a single uplink grant that triggers the single CSI report.
The method of claim 2 or 3, wherein the single CSI report is configured to be transmitted in a same starting symbol and with a same duration within each slot of the multiple PUSCH slots.
The method of any of claims 2-4, wherein the single CSI report is multiplexed in the multiple PUSCH slots.
The method of any of claims 2-5, wherein each of the multiple CSI sub-reports is transmitted in a different PUSCH slot of the multiple PUSCH slots.
The method of any of claims 2-6, wherein a first CSI sub-report of the multiple CSI sub-reports is transmitted in a first PUSCH slot of the multiple PUSCH slots, and wherein a second CSI sub-report of the multiple CSI sub-reports is transmitted in a second PUSCH slot of the multiple PUSCH slots.
The method of claim 7, further comprising transmitting PUSCH data using a first transport block (TB) in the first PUSCH slot and using a second TB in the second PUSCH slot, wherein a first TB size of the first TB is determined based at least in part on a number of resource elements (REs) available for the PUSCH data in the first PUSCH slot after multiplexing the first CSI sub-report in the first PUSCH slot, and wherein a second TB size of the second TB is determined based at least in part on a number of REs available for the PUSCH data in the second PUSCH slot after multiplexing the second CSI sub-report in the second PUSCH slot.
The method of claim 7, further comprising transmitting PUSCH data in a single transport block (TB) in the first PUSCH slot and in the second PUSCH slot, wherein a TB size of the single TB is determined based at least in part on a number of resource elements available for the PUSCH data jointly across the first PUSCH slot and the second PUSCH slot after multiplexing the first CSI sub-report in the first PUSCH slot and after multiplexing the second CSI sub-report in the second PUSCH slot.
The method of any of claims 7-9, wherein a number of resources available for the first CSI sub-report in the first PUSCH slot and a number of resources available for the second CSI sub-report in the second PUSCH slot are the same and are jointly configured for the first PUSCH slot and the second PUSCH slot.
The method of any of claims 7-9, wherein a number of resources available for the first CSI sub-report in the first PUSCH slot and a number of resources available for the second CSI sub-report in the second PUSCH slot are different and are separately configured for the first PUSCH slot and the second PUSCH slot.
The method of claim 1, wherein all of the multiple CSI sub-reports are multiplexed in a single physical uplink shared channel (PUSCH) slot.
The method of any of claims 1-11, wherein the multiple CSI sub-reports are multiplexed in multiple physical uplink shared channel (PUSCH) slots based at least in part on a determination that a number of available resource elements in a single PUSCH slot is insufficient to carry the multiple CSI sub-reports.
The method of claim 13, further comprising dropping one or more CSI sub-reports, one or more portions of one or more CSI sub-reports, or a combination thereof based at least in part on a determination that a number of available resource elements in the multiple PUSCH slots is insufficient to carry the multiple CSI sub-reports.
The method of claim 14, wherein the one or more CSI sub-reports or the one or more portions are dropped based at least in part on a priority order associated with the one or more CSI sub-reports or the one or more portions.
The method of any of claims 1-15, wherein the multiple CSI sub-reports are transmitted in a first set of physical uplink shared channel (PUSCH) slots of multiple PUSCH slots, and wherein PUSCH data is transmitted in a second set of PUSCH slots of the multiple PUSCH slots.
The method of claim 16, wherein the first set of PUSCH slots includes at least one slot included in the second set of PUSCH slots.
The method of claim 16 or 17, wherein the PUSCH data is transmitted using respective transport blocks (TBs) in multiple PUSCH slots, wherein a TB size of each respective TB is determined based at least in part on a number of resource elements available for the PUSCH data in a PUSCH slot, corresponding to the respective TB, after multiplexing a CSI sub-report in the PUSCH slot.
The method of claim 16 or 17, wherein the PUSCH data is transmitted using a single transport block (TB) across multiple PUSCH slots, wherein a TB size of the single TB is determined based at least in part on a number of resource elements available for the PUSCH data jointly across the multiple PUSCH slots after multiplexing the multiple CSI sub-reports in the first set of PUSCH slots.
The method of any of claims 16-19, wherein a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is the same across each PUSCH slot of the first set of PUSCH slots and is jointly configured for the first PUSCH slot and the second PUSCH slot.
The method of any of claims 16-19, wherein a number of resources available for the multiple CSI sub-reports in the first set of PUSCH slots is different across at least two PUSCH slots of the first set of PUSCH slots and is separately configured for each PUSCH slot of the first set of PUSCH slots.
The method of any of claims 1-11 or 13-21, wherein the one or more uplink resources includes two physical uplink shared channel (PUSCH) slots.
The method of claim 22, wherein a first PUSCH slot, of the two PUSCH slots, includes the multiple CSI sub-reports and not uplink shared channel (UL-SCH) data, and wherein a second PUSCH slot, of the two PUSCH slots, includes UL-SCH data and not the multiple CSI sub-reports.
The method of claim 23, wherein a coding rate for the multiple CSI sub-reports is determined based at least in part on a number of available resource elements in the first PUSCH slot.
The method of claim 23 or 24, wherein the UL-SCH data is transmitted using a single transport block (TB) , and wherein a TB size of the single TB is determined based at least in part on a number of available resource elements in the second PUSCH slot.
Auser equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:

measure multiple channel state information (CSI) reference signals (CSI-RSs) , wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CSI-RS resource indicators (CRIs) , different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different channel quality indicator (CQI) groups, different precoding matrix indicator (PMI) groups, or different rank indicator (RI) groups; and

transmit a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.
Anon-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment (UE) , cause the one or more processors to:

measure multiple channel state information (CSI) reference signals (CSI-RSs) , wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CSI-RS resource indicators (CRIs) , different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different channel quality indicator (CQI) groups, different precoding matrix indicator (PMI) groups, or different rank indicator (RI) groups; and

transmit a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.
An apparatus for wireless communication, comprising:

means for measuring multiple channel state information (CSI) reference signals (CSI-RSs) , wherein different CSI-RSs of the multiple CSI-RSs are associated with at least one of different CSI-RS resource indicators (CRIs) , different CSI-RS resources, different CSI-RS resource sets, different CSI-RS port groups, different channel quality indicator (CQI) groups, different precoding matrix indicator (PMI) groups, or different rank indicator (RI) groups; and

means for transmitting a single CSI report in one or more uplink resources, wherein the single CSI report includes multiple CSI sub-reports determined based at least in part on measuring the multiple CSI-RSs, and wherein different CSI sub-reports of the multiple CSI sub-reports are associated with at least one of the different CRIs, the different CSI-RS resources, the different CSI-RS resource sets, the different CSI-RS port groups, the different CQI groups, the different PMI groups, or the different RI groups.