Sidelink Channel State Information Reporting for Sidelink Relay Using Multiple Transmit Receive Points

Abstract

Generally speaking, various aspects of the present disclosure relate to wireless communication. In some aspects, a user equipment may receive a configuration indicating a plurality of sidelink channel state information (CSI) report sets, where different sidelink CSI report sets include different combinations of CSI parameters; receive an indication of the sidelink CSI report set to be reported in a sidelink CSI report among the plurality of sidelink CSI report sets; and transmit a sidelink CSI report, where the sidelink CSI report includes a set of values of one or more CSI parameters included in the indicated sidelink CSI report set. Numerous other aspects are provided.

Description

[0001] Cross - Reference to Related Applications

[0002] This patent application claims priority to the following applications: U.S. Provisional Patent Application No. 63 / 038,412, filed on June 12, 2020, entitled "SIDELINK CHANNEL STATE INFORMATION REPORTING FOR SIDELINK RELAYING THAT USES MULTIPLE TRANSMIT RECEIVE POINTS"; and U.S. Non - Provisional Patent Application No. 17 / 329,877, filed on May 25, 2021, entitled "SIDELINK CHANNEL STATE INFORMATION REPORTING FOR SIDELINK RELAYING THAT USES MULTIPLE TRANSMIT RECEIVE POINTS", which are hereby incorporated by reference in their entirety. Technical Field

[0003] Broadly, aspects of the present disclosure relate to wireless communication and to techniques and apparatus for sidelink channel state information reporting for sidelink relaying that uses multiple transmit receive points. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple access technology that is capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single - carrier frequency division multiple access (SC - FDMA) systems, time - division synchronous code division multiple access (TD - SCDMA) systems, and Long Term Evolution (LTE). LTE / Advanced LTE is an enhanced set of the Universal Mobile Telecommunications System (UMTS) mobile standards released by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include a number of base stations (BSs) capable of supporting communication for several user equipments (UEs). The user equipment may communicate with the base station via a downlink and an 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, the BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The above multi-access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipments to communicate at the urban, national, regional, and even global levels. NR (which may also be referred to as 5G) is an enhanced set of the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access and support beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation by improving spectral efficiency, reducing costs, improving services, utilizing new spectrums, and using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to better integrate with other open standards. As the demand for mobile broadband access continues to grow, it is still useful to further improve LTE, NR, and other radio access technologies. SUMMARY

[0007] In some aspects, a method of wireless communication performed by a user equipment may include: receiving a configuration indicating a plurality of sidelink channel state information (CSI) report sets, where different sidelink CSI report sets include different combinations of CSI parameters; receiving an indication of the sidelink CSI report set among the plurality of sidelink CSI report sets to be reported in a sidelink CSI report; and transmitting the sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0008] In some aspects, a method of wireless communication performed by a base station may include: transmitting a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; and transmitting an indication of the sidelink CSI report set among the plurality of sidelink CSI report sets to be reported in a sidelink CSI report.

[0009] In some aspects, a user equipment for wireless communication may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to: receive a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; receive an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets; and transmit a sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0010] In some aspects, a base station for wireless communication may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to: transmit a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; and transmit an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets.

[0011] 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 user equipment (UE), may cause the one or more processors to: receive a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; receive an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets; and transmit a sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0012] 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 base station, may cause the one or more processors to: transmit a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; and transmit an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets.

[0013] In some aspects, an apparatus for wireless communication may include: a unit for receiving a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; a unit for receiving an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets; and a unit for transmitting sidelink CSI, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0014] In some aspects, an apparatus for wireless communication may include: a unit for transmitting a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; and a unit for transmitting an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets.

[0015] Broadly speaking, aspects include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to the figures and the specification and as illustrated by the figures and the specification.

[0016] The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure so that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples 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. When considered in conjunction with the drawings, the characteristics (both their organization and method of operation) of the concepts disclosed herein, as well as the associated advantages, will be better understood from the following description. Each of the drawings provided herein is for the purpose of illustration and description and is not to be construed as a definition of the limits of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To gain a more particular description of the inventive subject matter briefly outlined above, reference is made to the aspects, some of which are illustrated in the accompanying drawings. It is to be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, for the description may admit of other equally effective aspects. Like reference numerals in the different drawings may identify the same or similar elements.

[0018] Figure 1 is a diagram illustrating an example of a wireless network in accordance with the present disclosure.

[0019] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0020] Figure 3 is a diagram illustrating an example of sidelink communication according to the present disclosure.

[0021] Figure 4 is a diagram illustrating an example of sidelink communication and access link communication according to the present disclosure.

[0022] Figure 5 is a diagram illustrating an example of a relay UE that relays communication between a UE and a base station according to the present disclosure.

[0023] Figure 6 is a diagram illustrating another example of a relay UE that relays communication between a UE and a base station according to the present disclosure.

[0024] Figure 7 is a diagram illustrating an example of a protocol stack for a relay UE that relays communication between a UE and a base station via layer 2 relay according to the present disclosure.

[0025] Figure 8 is a diagram illustrating an example of using multiple relay UEs to relay communication between a UE and a base station according to the present disclosure.

[0026] Figure 9 is a diagram illustrating an example associated with sidelink channel state information reporting for sidelink relay according to the present disclosure.

[0027] Figure 10 is a diagram illustrating another example associated with sidelink channel state information reporting for sidelink relay according to the present disclosure.

[0028] Figure 11 is a diagram illustrating an example process, such as one performed by a UE, according to the present disclosure.

[0029] Figure 12 is a diagram illustrating an example process, such as one performed by a base station, according to the present disclosure.

[0030] Figures 13 - 14 is a block diagram of an example apparatus for wireless communication according to the present disclosure. Detailed Description

[0031] Aspects of the present disclosure are more fully described below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or in combination with any other aspect of the present 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 present disclosure is intended to cover such apparatus or methods implemented using other structures, functionality, or a combination of structures and functionality in addition to or different from the aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0032] Certain aspects of a telecommunications system will now be presented with reference to various apparatus and techniques. These apparatus and techniques will be described in the following detailed description through various boxes, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"), and illustrated in the drawings. These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0033] It should be noted that although terms typically associated with 5G or NR radio access technology (RAT) may be used herein to describe aspects, aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RAT (e.g., 6G).

[0034] Figure 1FIG. is a diagram illustrating an example of a wireless network 100 in accordance with the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network, an LTE network, etc. The wireless network 100 may include several base stations 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, a Node B, a gNB, a 5G Node B (NB), an access point, a transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” may refer to the coverage area of a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0035] 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., with a radius of several kilometers) and may allow unrestricted access by UEs having a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs having a service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated 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 Figure 1 the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5GNB,” and “cell” may be used interchangeably herein.

[0036] In some aspects, a cell may not necessarily be stationary, and the geographic area of a cell may move according to the location of a mobile BS. In some aspects, any suitable transport network may be used to interconnect the BSs with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces such as direct physical connections, virtual networks, etc.

[0037] The wireless network 100 may also include relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send the data transmissions to a downstream station (e.g., a UE or a BS). A relay station may be a relay UE that can relay transmissions for other UEs. In Figure 1 the example shown in Figure 1 , the relay UE 120a may communicate with the macro BS 110a and the UE 120e to facilitate communication between the BS 110a and the UE 120e. A relay station may be a relay BS (also referred to as a relay base station, a repeater, etc.) that can relay transmissions for a UE. In

[0038] the example shown in

[0039] , the relay station 110d may communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d.

[0040] The UEs 120 (e.g., 120a, 120b, 120c) may be scattered throughout the 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 user unit, a station, etc. 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 device, a camera, a gaming device, a netbook, a smartbook, a ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio unit), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0041] Some UEs can be considered as 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, and / or location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node can provide a connection to or from a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs can be considered as Internet of Things (IoT) devices, and / or can be implemented as NarrowBand IoT (NB-IoT) devices. Some UEs can be considered as Customer Premises Equipment (CPE). UE 120 can be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc. In some aspects, the processor component and the memory component can be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0042] In general, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. The RAT can also be referred to as a radio technology, an air interface, etc. The frequency can also be referred to as a carrier, a channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network can be deployed.

[0043] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using the base station 110 as an intermediary for communicating with each other). For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which can include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), a mesh network, etc. In such cases, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0044] Devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1) that can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating band having a second frequency range (FR2) that can span from 24.25 GHz to 52.6 GHz. The frequency between FR1 and FR2 is sometimes referred to as the band center frequency. Although a portion of FR1 is greater than 6 GHz, FR1 is generally referred to as the "sub-6 GHz" band. Similarly, FR2 is generally referred to as the "millimeter wave" band, although FR2 is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless otherwise explicitly stated, it should be understood that terms such as "sub-6 GHz" (if used herein) can broadly represent frequencies less than 6 GHz, frequencies within FR1, and / or the band center frequency (e.g., greater than 7.125 GHz). Similarly, unless otherwise explicitly stated, it should be understood that terms such as "millimeter wave" (if used herein) can broadly represent frequencies within the EHF band, frequencies within FR2, and / or the band center frequency (e.g., less than 24.25 GHz). It is expected that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein apply to those modified frequency ranges.

[0045] In some aspects, the UE 120 can receive a configuration indicating multiple sidelink channel state information (CSI) report sets. In some aspects, different sidelink CSI report sets include different combinations of CSI parameters. The UE 120 can receive an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in the sidelink CSI report. The UE 120 can send a sidelink CSI report. The sidelink CSI report can include a set of values for one or more CSI parameters included in the indicated sidelink CSI report set. Additionally or alternatively, the UE 120 can perform one or more other operations described herein.

[0046] In some aspects, the base station 110 can send a configuration indicating multiple sidelink CSI report sets. In some aspects, different sidelink CSI report sets include different combinations of CSI parameters. The base station 110 can send an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in the sidelink CSI report. Additionally or alternatively, the base station 110 can perform one or more other operations described herein.

[0047] As noted above, Figure 1 is provided as an example. Other examples may differ from the example regarding Figure 1 described example.

[0048] Figure 2 FIG. 200 is a diagram illustrating an example of a base station 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where generally, T≥1 and R≥1.

[0049] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCSs) for the UE at least in part based on channel quality indicators (CQIs) received from each UE, process (e.g., encode and modulate) the data for the UE at least in part based on the MCSs selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRSs), demodulation reference signals (DMRSs), etc.) and synchronization signals (e.g., 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, control symbols, overhead symbols, and / or reference symbols (if applicable) and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process the corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from the modulators 232a through 232t may be transmitted via the T antennas 234a through 234t, respectively.

[0050] At the UE 120, antennas 252a through 252r may receive downlink signals from the base station 110 and / or other base stations, and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. The 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 the detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for the UE 120 to the data sink 260, and provide the decoded control information and system information to the controller / processor 280. The channel processor may determine a reference signal received power (RSRP), a received signal strength indicator (RSSI), a reference signal received quality (RSRQ), a CQI, etc. In some aspects, one or more components of the UE 120 may be included in a housing 284.

[0051] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0052] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded (if applicable) by the TX MIMO processor 266, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, e.g., as referenced Figures 8 - 12 described.

[0053] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 can include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 can include scheduler 246 for scheduling UE 120 for downlink and / or uplink communication. In some aspects, base station 110 includes a transceiver. The transceiver can include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver can be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, e.g., as referred to Figures 8 - 12 described.

[0054] Controller / processor 240 of base station 110, controller / processor 280 of UE 120, and / or Figure 2 any other components therein can perform one or more techniques associated with sidelink channel state information reporting for sidelink relay using 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 Figure 2 any other components therein can perform or direct the operation of, for example Figure 11 procedure 1100, Figure 12 procedure 1200, and / or other procedures as described herein. Memories 242 and 282 can store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 can include a non-transitory computer-readable medium storing one or more instructions (e.g., code, program code, etc.) for wireless communication. For example, when the one or more instructions are executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, conversion, interpretation, etc.), they can cause the one or more processors, UE 120, and / or base station 110 to perform or direct the operation of, for example Figure 11 procedure 1100, Figure 12 procedure 1200, and / or other procedures as described herein. In some aspects, executing the instructions can include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, etc.

[0055] In some aspects, the UE 120 may include: a unit for receiving a configuration indicating a plurality of sidelink channel state information (CSI) report sets, where different sidelink CSI report sets include different combinations of CSI parameters; a unit for receiving an indication of the sidelink CSI report set to be reported in the sidelink CSI report among the plurality of sidelink CSI report sets; a unit for transmitting sidelink CSI, where the sidelink CSI report includes a set of values of one or more CSI parameters included in the indicated sidelink CSI report set; etc. In some aspects, such units may include one or more components of the UE 120 described in conjunction with Figure 2 as described, such as the controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0056] In some aspects, the base station 110 may include: a unit for transmitting a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters; a unit for transmitting an indication of the sidelink CSI report set to be reported in the sidelink CSI report among the plurality of sidelink CSI report sets; etc. In some aspects, such units may include one or more components of the base station 110 described in conjunction with Figure 2 as described, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.

[0057] Although Figure 2 the blocks in are shown as different components, the functions described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with respect to the transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of the processor 280.

[0058] As noted above, Figure 2 is provided as an example. Other examples may be different from the example described with respect to Figure 2 as described.

[0059] Figure 3 is a diagram illustrating an example 300 of sidelink communication according to the present disclosure.

[0060] As Figure 3As shown, the first UE 305-1 may communicate with a second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. The UEs 305-1 and 305-2 may communicate using one or more sidelink channels 310 for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, vehicle-to-pedestrian (V2P) communication, etc.), mesh networking, and the like. In some aspects, the UE 305 (e.g., UE 305-1 and / or UE 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 may use the PC5 interface and / or may operate in a high frequency band (e.g., 5.9 GHz band). Additionally or alternatively, the UE 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, symbols, etc.).

[0061] As Figure 3 Further shown, one or more sidelink channels 310 may include a Physical Sidelink Control Channel (PSCCH) 315, a Physical Sidelink Shared Channel (PSSCH) 320, and / or a Physical Sidelink Feedback Channel (PSFCH) 325. Similar to the Physical Downlink Control Channel (PDCCH) and / or Physical Uplink Control Channel (PUCCH) for cellular communication with a base station 110 via an access link or access channel, the PSCCH 315 may be used to carry control information. Similar to the Physical Downlink Shared Channel (PDSCH) and / or Physical Uplink Shared Channel (PUSCH) for cellular communication with a base station 110 via an access link or access channel, the PSSCH 320 may be used to carry data. For example, the PSCCH 315 may carry Sidelink Control Information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, spatial resources, etc.), where a Transport Block (TB) 335 may be carried on the PSSCH 320. The TB 335 may include data. The PSFCH 325 may be used to carry sidelink feedback 340, such as Hybrid Automatic Repeat reQuest (HARQ) feedback (e.g., acknowledgement or negative acknowledgement (ACK / NACK) information), Transmit Power Control (TPC), Scheduling Request (SR), etc.

[0062] In some aspects, one or more sidelink channels 310 may use a resource pool. For example, a scheduling assignment (e.g., included in SCI 330) may be transmitted in a subchannel using specific resource blocks (RBs) across time. In some aspects, data transmission associated with the scheduling assignment (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency-division multiplexing). In some aspects, the scheduling assignment and the associated data transmission are not transmitted on adjacent RBs.

[0063] In some aspects, UE 305 may operate using a transmission mode in which resource selection and / or scheduling is performed by UE 305 (e.g., rather than base station 110). In some aspects, UE 305 may perform resource selection and / or scheduling by sensing the availability of channels for transmission. For example, UE 305 may measure received signal strength indicator (RSSI) parameters associated with various sidelink channels (e.g., sidelink-RSSI (S-RSSI) parameters), may measure reference signal received power (RSRP) parameters associated with various sidelink channels (e.g., PSSCH-RSRP parameters), may measure reference signal received quality (RSRQ) parameters associated with various sidelink channels (e.g., PSSCH-RSRQ parameters), etc., and may select a channel for transmission for sidelink communication based at least in part on the measurements.

[0064] Additionally or alternatively, UE 305 may use the SCI 330 received in PSCCH 315 to perform resource selection and / or scheduling, where the SCI 330 may indicate occupied resources, channel parameters, etc. Additionally or alternatively, UE 305 may perform resource selection and / or scheduling by determining the channel busy rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating the maximum number of resource blocks that UE 305 may use for a particular set of subframes).

[0065] In a transmission mode in which the UE 305 performs resource selection and / or scheduling, the UE 305 may generate a sidelink grant and may send the grant in the SCI 330. The sidelink grant may indicate, for example, one or more parameters (e.g., transmission parameters) to be used for an upcoming sidelink transmission, such as one or more resource blocks (e.g., for the TB 335) to be used for an upcoming sidelink transmission on the PSSCH 320, one or more subframes to be used for an upcoming sidelink transmission, a modulation and coding scheme (MCS) to be used for an upcoming sidelink transmission, etc. In some aspects, the UE 305 may generate a sidelink grant that indicates one or more parameters for semi-persistent scheduling (SPS), such as the periodicity of sidelink transmissions. Additionally or alternatively, the UE 305 may generate a sidelink grant for event-driven scheduling (e.g., for on-demand sidelink messages).

[0066] As noted above, Figure 3 is provided as an example. Other examples may be different from the example regarding Figure 3 described.

[0067] Figure 4 FIG. is a diagram illustrating an example 400 of sidelink communication and access link communication in accordance with the present disclosure.

[0068] As Figure 4 shown, a transmitter (Tx) UE 405 and a receiver (Rx) UE 410 may communicate with each other via a sidelink, as described above in connection with Figure 3 described. As further shown, in some sidelink modes, the base station 110 may communicate with the Tx UE 405 via a first access link. Additionally or alternatively, in some sidelink modes, the base station 110 may communicate with the Rx UE 410 via a second access link. The Tx UE 405 and / or the Rx UE 410 may correspond to one or more UEs described elsewhere herein, such as Figure 1 the UE 120. Thus, a direct link (e.g., via the PC5 interface) between UEs 120 may be referred to as a sidelink, and a direct link (e.g., via the Uu interface) between the base station 110 and the UE 120 may be referred to as an access link. Sidelink communication may be sent via the sidelink, and access link communication may be sent via the access link. Access link communication may be downlink communication (from the base station 110 to the UE 120) or uplink communication (from the UE 120 to the base station 110).

[0069] As noted above, Figure 4 is provided as an example. Other examples may be different from the example regardingFigure 4 Described example.

[0070] Figure 5 FIG. 500 is a diagram illustrating an example 500 of a relay UE that relays communication between a UE and a base station according to the present disclosure. As shown, example 500 includes a UE 505, a relay UE 510, and a base station 110. In example 500, UE 505 is a Tx UE, and relay UE 510 is an Rx UE, as described elsewhere herein. In some aspects, UE 505 is one UE 120, and relay UE 510 is another UE 120. In some aspects, UE 505 may be referred to as a remote UE.

[0071] As Figure 5 shown, UE 505 may directly send communication (e.g., data, control information, etc.) as uplink communication 515 to base station 110. Additionally or alternatively, UE 505 may indirectly send communication (e.g., data, control information, etc.) to base station 110 via relay UE 510. For example, UE 505 may send communication as sidelink communication 520 to relay UE 510, and relay UE 510 may relay (e.g., forward, send, etc.) the communication as uplink communication 525 to base station 110.

[0072] In some aspects, UE 505 may directly communicate with base station 110 via direct link 530. For example, uplink communication 515 may be sent via direct link 530. Communication sent via direct link 530 between UE 505 and base station 110 (e.g., in uplink communication 515) does not pass through relay UE 510 and is not relayed by relay UE 510. In some aspects, UE 505 may indirectly communicate with base station 110 via indirect link 535. For example, sidelink communication 520 and uplink communication 525 may be sent via different segments of indirect link 535. Communication sent via indirect link 535 between UE 505 and base station 110 (e.g., in sidelink communication 520 and uplink communication 525) passes through relay UE 510 and is relayed by relay UE 510.

[0073] Using Figure 5The communication scheme shown can improve network performance and increase reliability by providing link diversity for the UE 505 to communicate with the base station 110. For millimeter wave (e.g., frequency range 2 or FR2) communications that are prone to link blockage and link damage, such link diversity can improve reliability and prevent multiple retransmissions of data that might otherwise be retransmitted to achieve successful communication. However, the techniques described herein are not limited to millimeter wave communications and can be used for sub-6 gigahertz (e.g., frequency range 1 or FR1) communications.

[0074] In some cases, the UE 505 can send communications (e.g., the same communication) to the base station 110 via both the direct link 530 and the indirect link 535. In other cases, the UE 505 can select one of the links (e.g., the direct link 530 or the indirect link 535) and can send communications to the base station 110 using only the selected link. Alternatively, the UE 505 can receive an indication of one of the links (e.g., the direct link 530 or the indirect link 535) and can send communications to the base station 110 using only the indicated link. The indication can be sent by the base station 110 and / or the relay UE 510. In some aspects, such selection and / or indication can be at least partially based on channel conditions, link reliability, etc.

[0075] As noted above, Figure 5 is provided as an example. Other examples can be different from the example regarding Figure 5 described.

[0076] Figure 6 FIG. 600 is a diagram illustrating an example 600 of a relay UE that relays communications between a UE and a base station in accordance with the present disclosure. As shown, example 600 includes a UE 605, a relay UE 610, and a base station 110. In example 600, the UE 605 is a Rx UE, and the relay UE 610 is a Tx UE. In some aspects, the UE 605 is one UE 120, and the relay UE 610 is another UE 120. In some aspects, the UE 605 can be referred to as a remote UE.

[0077] As Figure 6 shown, the UE 605 can receive communications (e.g., data, control information, etc.) directly from the base station 110 as downlink communication 615. Additionally or alternatively, the UE 605 can receive communications (e.g., data, control information, etc.) indirectly from the base station 110 via the relay UE 610. For example, the base station 110 can send the communication as downlink communication 620 to the relay UE 610, and the relay UE 610 can relay (e.g., forward, send, etc.) the communication as sidelink communication 625 to the UE 605.

[0078] In some aspects, the UE 605 may communicate directly with the base station 110 via the direct link 630. For example, the downlink communication 615 may be sent via the direct link 630. The communication sent via the direct link 610 between the UE 605 and the base station 110 (e.g., in the downlink communication 615) does not pass through the relay UE 610 and is not relayed by the relay UE 610. In some aspects, the UE 605 may communicate indirectly with the base station 110 via the indirect link 635. For example, the downlink communication 620 and the sidelink communication 625 may be sent via different segments of the indirect link 635. The communication sent via the indirect link 635 between the UE 605 and the base station 110 (e.g., in the downlink communication 620 and the sidelink communication 625) passes through the relay UE 610 and is relayed by the relay UE 610. As described above in connection with Figure 5 described, using Figure 6 the communication scheme shown in can improve network performance and increase reliability by providing link diversity for the UE 605 to communicate with the base station 110.

[0079] In some cases, the UE 605 may receive communication (e.g., the same communication) from the base station 110 via both the direct link 630 and the indirect link 635. In other cases, the base station 110 may select one of the links (e.g., the direct link 630 or the indirect link 635), and may send communication to the UE 605 using only the selected link. Alternatively, the base station 110 may receive an indication of one of the links (e.g., the direct link 630 or the indirect link 635), and may send communication to the UE 605 using only the indicated link. This indication may be sent by the UE 605 and / or the relay UE 610. In some aspects, such selection and / or indication may be at least partially based on channel conditions, link reliability, etc.

[0080] As noted above, Figure 6 is provided as an example. Other examples may be different from the example described with respect to Figure 6 described.

[0081] Figure 7 FIG. 700 is a diagram illustrating an example of a protocol stack for relaying communication between a UE and a base station via a relay UE using layer 2 relay according to the present disclosure.

[0082] As Figure 7 shown, the NR protocol stack implemented on the UE (e.g., the remote UE or the relay UE) and on the base station includes a non-access stratum (NAS) layer, a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, etc. As Figure 7As further shown, the layers of the NR protocol stacks of the UE and the base station can correspond to each other. The PDCP layer can be layer 2 in the NR protocol stack and can include multiple sublayers. For example, the PDCP layer can include a radio link control (RLC) sublayer, a media access control (MAC) sublayer, a physical (PHY) sublayer, etc. In some aspects, the PDCP layer on the UE (e.g., a remote UE or a relay UE) can include an adaptation sublayer (e.g., a service data adaptation protocol (SDAP) sublayer), etc.

[0083] When communicating directly with the base station (e.g., via the Uu interface), the UE (e.g., a remote UE) can communicate at the NR-RLC sublayer, the NR-MAC sublayer, and the NR-PHY layer. As Figure 7 shown, the sublayers in the UE can communicate with the corresponding sublayers in the base station. However, in a relay scenario, the UE can communicate with the relay UE via the PC5 interface (or the other sidelink interface). For example, the UE can include a PC5-RLC sublayer, a PC5-MAC sublayer, and a PC5-PHY sublayer to communicate with the corresponding PC5-RLC sublayer, PC5-MAC sublayer, and PC5-PHY sublayer of the relay UE. The relay UE can also include an NR-RLC sublayer, an NR-MAC sublayer, and an NR-PHY sublayer to communicate with the corresponding sublayers of the base station via the Uu interface. The adaptation layer of the NR protocol stack on the UE can adapt the communication from the NR protocol to the PC5 protocol. The relay UE enables layer 2 relay between the UE and the base station at least partially based on the information transferred between the PC5 sublayer and the NR sublayer.

[0084] For an aperiodic channel state information (CSI) report for sidelink communication, the Tx UE can send an aperiodic CSI request to the Rx UE and can send one or more CSI reference signals (CSI-RS). The Rx UE can measure the CSI-RS to calculate the CSI, which can include a CQI value, a precoding matrix indicator (PMI) value, a rank indicator (RI) value, a signal-to-interference-plus-noise ratio (SINR) value, a reference signal received power (RSRP) value, etc. The Rx UE can send a CSI report (e.g., in a media access control (MAC) control element) to the Tx UE to indicate the CSI calculated by the Rx UE. The Tx UE can determine one or more transmission parameters for the sidelink communication to be sent to the Rx UE at least partially based on the CSI. The one or more transmission parameters can include, for example, a modulation and coding scheme (MCS), a transport block (TB) size, resource allocation, transmit power, etc.

[0085] However, in the sidelink transmission mode of base station-assisted scheduling and / or controlling sidelink communication, the aperiodic CSI reporting process described above cannot enable the base station to assist in selecting or controlling transmission parameters. Thus, in some aspects, the base station may trigger aperiodic sidelink CSI reporting at least in part based on the aperiodic CSI report to assist in scheduling and / or controlling sidelink communication between a UE and a relay UE.

[0086] As noted above, Figure 7 is provided as an example. Other examples may be different from the example regarding Figure 7 described.

[0087] Figure 8 is a diagram illustrating example 800 of using multiple relay UEs to relay communication between a UE and a base station in accordance with the present disclosure. As Figure 8 shown, example 800 includes a UE 805, a first relay UE 810-1, a second relay UE 810-2, and a base station. In example 800, the UE 805 may be a Tx UE and / or an Rx UE, and the relay UE 810 may be a Tx UE and / or an Rx UE, as described elsewhere herein. The UE 805 may be a first UE, the relay UE 810-1 may be a second UE (or the first relay UE), and the relay UE 810-2 may be a third UE (or the second relay UE). In some aspects, the UE 805 may be referred to as a remote UE or a target UE.

[0088] As Figure 8 shown, the UE 805 may communicate directly with the base station via a direct link 815. However, in Figure 8In Example 800, the direct link 815 between the UE 805 and the base station may be blocked or may have poor quality. In this case, the UE 805 can communicate indirectly with the base station via sidelink communication 825 with the relay UE 810, and the relay UE 810 can communicate directly with the base station via access link communication 820. The access link communication 820 between the relay UE 810 and the base station may include uplink communication and / or downlink communication. For example, the UE 805 can send communication (e.g., data, control information, etc.) as sidelink communication 825 to the first relay UE 810-1 and / or the second relay UE 810-2, and the first relay UE 810-1 and / or the second relay UE 810-2 can relay (e.g., forward, send, etc.) the communication as access link communication 820 to the base station. Additionally and / or alternatively, the base station can send communication (e.g., data, control information, etc.) as access link communication 820 to the first relay UE 810-1 and / or the second relay UE 810-2, and the first relay UE 810-1 and / or the second relay UE 810-2 can relay (e.g., forward, send, etc.) the communication as sidelink communication 825 to the UE 805.

[0089] In some aspects, the communication between the base station and the UE 805 can be relayed by the first relay UE 810-1 and the second relay UE 810-2 using multi-transmit receive point (multi-TRP) sidelink relay. The multi-TRP sidelink relay uses multiple relay UEs 810 to send communication from the base station to the UE 805 and / or from the UE 805 to the base station. For example, assume that a data packet from the base station has the destination of the UE 805. However, the direct link 815 from the base station to the UE 805 may be blocked or may have poor quality. The base station can send a TB (or multiple TBs) including the data packet to the first relay UE 810-1 and the second relay UE 810-2. The first relay UE 810-1 and the second relay UE 810-2 can use multi-TRP transmission to relay the data packet from the base station to the UE 805. The base station can coordinate the multi-TRP sidelink relay. For example, the base station can use mode 1 sidelink resource allocation to coordinate the multi-TRP sidelink relay, where the base station conveys to the relay UE 810 which resources can be allocated by the relay UE 810 for sidelink relay.

[0090] As described above, CSI reporting can be performed for sidelink communication. For example, CSI reporting is supported for unicast communication in NR-V2X. A Tx UE (e.g., relay UE 810) can trigger CSI reporting by sending a CSI request to an Rx UE (e.g., UE 805) and sending one or more CSI-RSs to the Rx UE (e.g., UE 805) in an associated PSSCH. The Rx UE (e.g., UE 805) can measure the CSI-RSs to calculate CSI, and can report the CSI to the Tx UE (e.g., relay UE 810). For example, the Rx UE (e.g., UE 805) can report the CSI to the Tx UE (e.g., relay UE 810) via a MAC control element. In some aspects, the CSI in NR-V2X can include one bit for RI and four bits for CQI. In some aspects, the parameters of CSI in NR can include CQI value, PMI value, CSI-RS resource indicator (CRI) value, layer indicator (LI) value, synchronization signal / physical broadcast channel (SS / PBCH) resource block indicator (SSBRI) value, RI value, layer 1 RSRP (L1-RSRP) value, layer 1 SINR (L1-SINR) value, etc.

[0091] In some aspects, the base station can use CSI reports from UE 805 and / or relay UE 810 to coordinate multi-TRP sidelink relay. The base station can trigger sidelink aperiodic CSI reporting at least in part based on aperiodic CSI reports to assist in scheduling and / or controlling sidelink communication between UE 805 and relay UE 810. For example, the base station can use certain CSI parameters in the CSI reports to rank relay UE 810s based on sidelink channel quality (e.g., determine which link between one of the relay UEs 810 and UE 805 has a better channel), and to perform layer mapping to coordinate multi-TRP relay by relay UE 810. Relay UE 810 can use different CSI parameters in the CSI reports to determine transmission parameters (e.g., MCS, precoding matrix, TB size, code rate, transmit power, resource allocation, etc.) to be used for communication with UE 805. Thus, the base station and relay UE 810 can use different CSI parameters for different purposes. For example, the base station can use RI and / or CQI to schedule and / or control joint transmission. The base station can use L1-SINR and L1-RSRP to determine which relay link has a better channel. When coordinating multi-TRP transmission by relay UE 810, the base station can use RI and / or PMI. Each relay UE 810 can use PMI to select a precoding matrix. Thus, the base station and / or relay UE 810 may not use all of the CSI parameters of the CSI parameters in the CSI report.

[0092] As described above, the base station and relay UE 810 use different CSI parameters for different purposes and may not use all of the parameters in the CSI report for sidelink relay. Computing resources (e.g., processing resources, memory resources, communication resources, etc.), networking resources, etc. are consumed for UE 805 to compute and report all CSI parameters, regardless of whether the CSI report is used by the base station or one of the relay UEs 810.

[0093] Some of the techniques and apparatuses described herein enable the base station to configure different CSI report sets with different combinations of CSI parameters for the UE to report according to the destination and / or purpose of the CSI report. Thus, the UE can report a specific combination of CSI parameters corresponding to the destination and / or purpose of the CSI report, and thus save computing resources, networking resources, etc., which would otherwise be consumed by the UE to compute and report all CSI parameters regardless of the destination and / or purpose of the CSI report.

[0094] As pointed out above, Figure 8 is provided as an example. Other examples may be different from the example regarding Figure 8 described.

[0095] Figure 9 is a diagram illustrating example 900 associated with sidelink channel state information reporting for sidelink relay according to the present disclosure. As Figure 9 shown, the base station 110, UE 905, and relay UE 910 may communicate with each other. UE 905 and relay UE 910 may communicate with each other via a sidelink. The base station 110 and relay UE 910 may communicate with each other via an access link. UE 905 and base station 110 may communicate with each other via a direct link (e.g., an access link, such as when communication between UE 905 and base station 110 is not relayed by relay UE 910) and / or via an indirect link (e.g., an access link and a sidelink, such as when communication between UE 905 and base station 110 is relayed by relay UE 910). In some aspects, UE 905 and / or relay UE 910 may be the UE described elsewhere herein in connection with Figures 1 - 8 described. For example, relay UE 910 may be configured to relay communication between base station 110 and UE 905. In some aspects, relay UE 910 provides layer 2 relay services for UE 905, as described above in connection with Figure 7As described. In Example 900, relay UE 910 may be a Tx UE and UE 905 may be an Rx UE, or relay UE 910 may be an Rx UE and UE 905 may be a Tx UE. In some aspects, relay UE 910 may be one of multiple repeaters for performing multi-TRP sidelink relay, as described above in conjunction with Figure 8 described.

[0096] As shown by reference numeral 915, base station 110 may send (e.g., using controller / processor 240, transmission component 1404, etc.) a configuration indicating multiple sidelink (SL) CSI report sets to UE 905. Different SL CSI report sets in this configuration include different combinations of CSI parameters. Base station 110 may send this configuration to UE 905 using RRC signaling, downlink control information (DCI), etc. In some aspects, this configuration may include: a first SL CSI report set (including CQI, RI, L1-RSRP, and L1-SINR parameters) and a second SL CSI report set (including CQI and PMI parameters), as shown in Figure 9 Example 900. In some aspects, this configuration may include additional and / or alternative CSI report sets, the additional and / or alternative CSI report sets including CSI parameters different from those of the SL CSI report sets shown in Figure 9 For example, in addition to and / or instead of the SL CSI report sets shown in Figure 9 the SL CSI report sets shown in Figure 9 this configuration may include: an SL CSI report set including L1-SINR and L1-RSRP, an SL CSI report set including L1-SINR, L1-RSRP, RI, and PMI, and / or another SL CSI report set with different CSI parameters.

[0097] This configuration may include a mapping between the SL CSI report sets and corresponding index values. For example, as shown in Figure 9 the first SL CSI report set (CQI, RI, L1-RSRP, L1-SINR) is mapped to index value 0, and the second SL CSI report set (CQI, PMI) is mapped to index value 1.

[0098] In some aspects, the SL CSI report sets can be associated with the destinations to which the corresponding CSI reports are to be sent. For example, a first SL CSI report set (CQI, RI, L1-RSRP, L1-SINR) can be associated with the destination of base station 110, and a second SL CSI (CQI, PMI) can be associated with the destination of relay UE 910. In some aspects, multiple CSI report sets can be associated with the same destination. For example, the configuration can include different CSI report sets having different combinations of CSI parameters for supporting different tasks at the same destination (e.g., base station 110, relay UE 910, etc.).

[0099] In some aspects, the configuration can specify the corresponding destinations for the SL CSI report sets. For example, the configuration can specify the destination of base station 110 for the first SL CSI report set and the destination of relay UE 910 for the second SL CSI report set. In this case, both the SL CSI report set and the corresponding destination can be associated with a corresponding index. For example, index 0 can correspond to the first SL CSI report set for CSI reporting and the base station 110 destination, and index 1 can correspond to the second SL CSI report set for CSI reporting and the relay UE 910 destination. In some aspects, multiple destinations can be specified for the SL CSI report sets. For example, multiple destinations can be included in a destination field associated with the SL CSI report set and the corresponding index. Additionally and / or alternatively, a single destination can be listed for an index value, where subsets of different index values correspond to the same SL CSI report set and different destinations. In some aspects, the configuration may not include destination information for the CSI report sets.

[0100] In some aspects, the configuration can include a mapping between the destinations (e.g., base station 110, relay UE 910, etc.) and corresponding index values, but does not include a fixed destination for the CSI report sets. In this case, a first index value indicating the CSI report set (e.g., 0 for the first SL CSI report set, 1 for the second SL report set, etc.) and a second index value indicating the destination (e.g., 0 for base station 110, 1 for relay UE 910, etc.) can be used to indicate the SL CSI report set and the destination for CSI reporting.

[0101] In some aspects, the configuration may include a set of SL CSI reports for millimeter wave (e.g., FR2) sidelink communication, and the set of SL CSI reports includes one or more of CQI, PMI, CRI, LI, R1, L1-RSRP, L1-SINR, or a combination thereof. For example, the set of SL CSI reports for millimeter wave (e.g., FR2) sidelink communication may include PMI, L1-SINR, and L1-RSRP parameters. The Tx UE (e.g., relay UE 910) may use the PMI for rank > 1 transmission. L1-RSRP and L1-SINR may be used for SL beam selection and / or refinement in FR2. Based on L1-RSRP and L1-SINR, the base station 110 may determine which of the multiple SLs is better and use this information when deciding which relay UE (e.g., relay UE 910) transmits the PSCCH.

[0102] As shown by reference numeral 920, the base station 110 may send (e.g., using the controller / processor 240, the transmitting component 1404, etc.) an indication of the set of SL reports for SL CSI reporting and one or more destination devices (e.g., wireless communication devices, such as the base station 110, relay UE 910, etc.) to which the SL CSI report is to be sent to the UE 905. The base station 110 may directly send the indication of the set of SL CSI reports and the one or more destination devices to the UE 905 in PDCCH communication, MAC control elements, etc. Additionally and / or alternatively, the base station 110 may send the indication to the relay UE 910, and then the relay UE 910 may relay the indication to the UE 905.

[0103] The indication of the set of SL CSI reports may include an index value corresponding to the corresponding CSI report set in the configuration. The index value indicates that the UE 905 is to use the corresponding set of SL CSI reports for SL CSI reporting. For example, as Figure 9 shown, the indication includes the index value 1, and the index value 1 corresponds to the second set of SL CSI reports (CQI, PMI) in the configuration.

[0104] The indication sent by the base station 110 may also include an indication of one or more destination devices to which the SL CSI report is to be sent. The indication may indicate to the UE 905 to send the SL CSI report to the base station 110, a relay UE that relays communication between the UE 905 and the base station 110 (e.g., relay UE 910), a relay UE from which it receives sidelink CSI-RS for the sidelink CSI report (e.g., relay UE 910), a combination thereof, etc. For example, the indication may indicate to the UE 905 whether to send the SL CSI report to the base station 110 (e.g., via the Uu link) or to the relay UE 910 (or another relay UE) via SL communication. In Figure 9 the example shown, the destination for the SL CSI report is the relay UE 910.

[0105] The indication of one or more destination devices for the SL CSI report may be a single bit that provides an indication corresponding to a particular wireless communication device and / or a particular set of wireless communication devices. For example, the indication may be a single bit indicating that the destination device is the base station 110, the relay UE 910, or one of the base station 110 and the relay UE 910.

[0106] In some aspects, the indication sent by the base station 110 may include a first indication of a set of SL CSI reports for the SL CSI report and a second indication of one or more destination devices for the SL CSI report. For example, the first index may provide an indication of the set of SL CSI reports, and the second index may provide an indication of one or more destination devices. In Figure 9 the example shown, the first index value 1 and the second index value 1 may provide an indication to the UE 905 that the second set of SL CSI reports (CQI, PMI) will be used for the SL CSI report and that the SL CSI report will be sent to the relay UE 910.

[0107] In some aspects, a single index may provide an indication of both the set of SL CSI reports for the SL CSI report and one or more destination devices. In this case, the configuration may include the corresponding destination for the set of SL CSI reports. Thus, the index that provides an indication of the set of SL CSI reports also provides an indication of the destination to which the SL CSI report associated with the set of SL CSI reports is to be sent. For example, in Figure 9 the example shown, the index value 1 may provide an indication to the UE 905 that the second set of SL CSI reports will be used for the SL CSI report and that the SL CSI report will be sent to the relay UE 910.

[0108] As shown by reference numeral 925, relay UE 910 may send one or more SL CSI-RSs to UE 905 (e.g., using controller / processor 280, etc.). As Figure 9 shown, relay UE 910 sends the SL CSI-RS to UE 905 on the sidelink channel. Relay UE 910 may send the SL CSI-RS to UE 905 based at least in part on receiving an SL CSI trigger message from base station 110.

[0109] As shown by reference numeral 930, and based at least in part on receiving the SL CSI-RS sent by relay UE 910, UE 905 may measure (e.g., using controller / processor 280, measurement component 1308, etc.) the SL CSI-RS sent by relay UE 910 (e.g., on the sidelink channel). Based at least in part on measuring the SL CSI-RS, UE 905 may calculate CSI parameters included in the SL CSI report set indicated for the sidelink channel in the SL CSI report. In Figure 9 the example shown, the indication from base station 110 indicates that a second CSI report set (CQI, PMI) will be used for the SL CSI report. Thus, in Figure 9 the example, UE 905 may calculate a CQI value and a PMI value based at least in part on measuring the SL CSI-RS. In some aspects, UE 905 may calculate only the CSI parameters included in the SL CSI report set indicated for the SL CSI report. In some aspects, in addition to the CSI parameters included in the SL CSI report set indicated for the SL CSI report, UE 905 may calculate one or more other CSI parameters, but the one or more other CSI parameters may not be included in the SL CSI report.

[0110] As shown by reference numeral 935, based at least in part on measuring the SL CSI-RS, UE 905 may send (e.g., using controller / processor 280, transmission component 1304, etc.) an SL CSI report for the CSI parameters in the indicated SL CSI report set. The SL CSI report may include the values of the CSI parameters calculated by UE 905 that are included in the indicated SL CSI report set. In Figure 9 the example shown, the indication from base station 110 indicates that a second CSI report set (CQI, PMI) will be used for the CSI report. Thus, in Figure 9In an example, the SL CSI report may include a CQI value and a PMI value calculated by the UE 905 at least in part based on measuring the SL CSI-RS. The SL CSI report may be sent by the UE 905 to one or more destination devices. In Figure 9 an example, the indication from the base station 110 indicates that the destination for the SL CSI report is the relay UE 910. Thus, as Figure 9 shown, the UE 905 may send the SL CSI report to the relay UE 910 on the sidelink channel.

[0111] As indicated by reference numeral 940, the relay UE 910 and the UE 905 may communicate at least in part based on the values of the CSI parameters in the SL CSI report sent from the UE 905 to the relay UE 910. The relay UE 910 and the UE 905 communicate via the sidelink channel. The relay UE 910 may determine (e.g., using the controller / processor 280, etc.) and / or adjust transmission parameters such as MCS, precoding matrix, TB size, coding rate, transmit power, resource allocation, etc. at least in part based on the values of the SL CSI parameters in the SL CSI report. In Figure 9 an example, the SL CSI report sent from the UE 905 to the relay UE 910 includes a CQI value and a PMI value. In some aspects, the relay UE 910 may determine one or more transmission parameters (e.g., MCS, precoding matrix, TB size, coding rate, transmit power, resource allocation, etc.) for the sidelink channel between the relay UE 910 and the UE 905 based on the CQI value in the SL CSI report, the PMI value reported in the SL CSI, and / or a combination thereof. For example, the relay UE 910 may select an MCS for communication on the sidelink channel at least in part based on the CQI value. The relay UE 910 may select a precoding matrix for communication on the sidelink channel at least in part based on the PMI value. In some aspects, the relay UE 910 may use additional and / or alternative CSI parameters included in the CSI report set indicated for the CSI report to determine one or more transmission parameters.

[0112] The relay UE 910 can receive communications (e.g., data, control information, etc.) intended for the UE 905 from the base station 110, and relay the communications (e.g., data, control information, etc.) to the UE 905 via the sidelink channel using transmission parameters determined at least in part based on the values of the CSI parameters in the SL CSI report. The relay UE 910 can receive communications (e.g., data, control information, etc.) sent by the UE 905 via the sidelink channel using transmission parameters determined at least in part based on the values of the CSI parameters in the SL CSI report, and relay the communications (e.g., data, control information, etc.) to the base station 110.

[0113] Using the CSI report set configuration procedure described in conjunction with Figure 9 enables the base station 110 to configure different CSI report sets with different combinations of CSI parameters for the UE 905 to report according to the destination and / or purpose of the CSI report. Thus, the UE 905 can report a specific combination of CSI parameters corresponding to the destination and / or purpose of the CSI report, and thus save computing resources, networking resources, etc., which would otherwise be consumed by the UE 905 to calculate and report all CSI parameters regardless of the destination and / or purpose of the CSI report.

[0114] As pointed out above, Figure 9 is provided as an example. Other examples may be different from the example described with respect to Figure 9 described.

[0115] Figure 10 FIG. is a diagram illustrating Example 1000 associated with sidelink channel state information reporting for sidelink relay according to the present disclosure. As Figure 10 shown, the base station 110, the UE 1005, and the relay UE 1010 can communicate with each other. The UE 1005 and the relay UE 1010 can communicate with each other via the sidelink. The base station 110 and the relay UE 1010 can communicate with each other via the access link. The UE 1005 and the base station 110 can communicate with each other via a direct link (e.g., an access link, such as when the communication between the UE 1005 and the base station 110 is not relayed by the relay UE 1010) and / or via an indirect link (e.g., an access link and a sidelink, such as when the communication between the UE 1005 and the base station 110 is relayed by the relay UE 1010). In some aspects, the UE 1005 and / or the relay UE 1010 can be the UE described elsewhere herein in conjunction with Figures 1 - 8 described. For example, the relay UE 1010 can be configured to relay communications between the base station 110 and the UE 1005. In some aspects, the relay UE 1010 provides layer 2 relay services for the UE 1005, as described above in conjunction with Figure 7As described. In Example 1000, the relay UE 1010 can be the Tx UE, and the UE 1005 can be the Rx UE, or the relay UE 1010 can be the Rx UE, and the UE 1005 can be the Tx UE. In some aspects, the relay UE 1010 can be one of multiple repeaters for performing multi-TRP sidelink relay, as described above in connection with Figure 8 described.

[0116] As shown by reference numeral 1015, the base station 110 can send (e.g., using the controller / processor 240, the transmission component 1404, etc.) an indication of the configuration of multiple SL CSI report sets to the UE 1005. Different SL CSI report sets in this configuration include different combinations of CSI parameters. In some aspects, the base station 110 can send this configuration, and this configuration can identify the SL CSI report set, index, and / or destination, as described above in connection with Figure 9 described.

[0117] As shown by reference numeral 1020, the base station 110 can send (e.g., using the controller / processor 240, the transmission component 1404, etc.) an indication of the SL report set for SL CSI reporting and one or more destination devices (e.g., wireless communication devices such as the base station 110, the relay UE 1010, etc.) to which the SL CSI report is to be sent to the UE 1005. The base station 110 can directly send the indication of the SL CSI report set and the one or more destination devices to the UE 1005 in PDCCH communication, MAC control elements, etc. Additionally and / or alternatively, the base station 110 can send this indication to the relay UE 1010, and then the relay UE 1010 can relay this indication to the UE 1005.

[0118] The indication of the SL CSI report set can include an index value corresponding to the corresponding CSI report set in the configuration. This index value indicates that the UE 1005 is to use the corresponding SL CSI report set for SL CSI reporting. For example, as Figure 10 shown, this indication includes the index value 0, and the index value 0 corresponds to the first SL CSI report set (CQI, RI, L1-RSRP, L1-SINR) in the configuration.

[0119] The indication sent by base station 110 may also include an indication of one or more destination devices to which the SL CSI report is to be sent. The indication may indicate to UE 1005 to send the SL CSI report to base station 110, a relay UE that relays communication between UE 1005 and base station 110 (e.g., relay UE 1010), a relay UE from which the side-link CSI-RS for the sidelink CSI report is received (e.g., relay UE 1010), a combination thereof, etc. For example, the indication may indicate to UE 1005 whether to send the SL CSI report to base station 110 (e.g., via the Uu link) or to relay UE 1010 (or another relay UE) via SL communication. In Figure 10 In the example shown, the destination for the SL CSI report is base station 110.

[0120] The indication of one or more destination devices for the SL CSI report may be a single bit that provides an indication corresponding to a specific wireless communication device and / or a specific set of wireless communication devices. For example, the indication may be a single bit indicating that the destination device is base station 110, relay UE 1010, or one of base station 110 and relay UE 1010.

[0121] In some aspects, the indication sent by base station 110 may include a first indication of a set of SL CSI reports for the SL CSI report and a second indication of one or more destination devices for the SL CSI report. For example, the first index may provide an indication of the set of SL CSI reports, and the second index may provide an indication of one or more destination devices. In Figure 10 In the example shown, the first index value 0 and the second index value 0 may provide an indication to UE 1005 that the first set of SL CSI reports (CQI, RI, L1-RSRP, L1-SINR) will be used for the SL CSI report and that the SL CSI report will be sent to base station 110.

[0122] In some aspects, a single index may provide an indication of both the set of SL CSI reports for the SL CSI report and one or more destination devices. In this case, the configuration may include the corresponding destination for the set of SL CSI reports. Thus, the index that provides an indication of the set of SL CSI reports also provides an indication of the destination to which the SL CSI report associated with the set of SL CSI reports is to be sent. For example, in Figure 10 In the example shown, the index value 0 may provide an indication to UE 1005 that the first set of SL CSI reports will be used for the SL CSI report and that the SL CSI report will be sent to base station 110.

[0123] As shown by reference numeral 1025, the relay UE 1010 may send one or more SL CSI-RSs to the UE 1005 (e.g., using the controller / processor 280, etc.). As Figure 10 shown, the relay UE 1010 sends the SL CSI-RS to the UE 1005 on the sidelink channel. The relay UE 1010 may send the SL CSI-RS to the UE 1005 at least partially based on receiving an SL CSI trigger message from the base station 110.

[0124] As shown by reference numeral 1030, at least partially based on receiving the SL CSI-RS sent by the relay UE 1010, the UE 1005 may measure (e.g., using the controller / processor 280, the measurement component 1308, etc.) the SL CSI-RS sent by the relay UE 1010 (e.g., on the sidelink channel). At least partially based on measuring the SL CSI-RS, the UE 1005 may calculate CSI parameters included in the SL CSI report set indicated for the SL CSI report for the sidelink channel. In Figure 10 the example shown, the indication from the base station 110 indicates that the first CSI report set (CQI, RI, L1-RSRP, L1-SINR) will be used for the SL CSI report. Thus, in Figure 10 the example, the UE 1005 may calculate a CQI value, an RI value, an L1-RSRP value, and an L1-SINR value at least partially based on measuring the SL CSI-RS. In some aspects, the UE 1005 may only calculate the CSI parameters included in the SL CSI report set indicated for the SL CSI report. In some aspects, in addition to the CSI parameters included in the SL CSI report set indicated for the SL CSI report, the UE 1005 may also calculate one or more other CSI parameters, but the one or more other CSI parameters may not be included in the SL CSI report.

[0125] As shown by reference numeral 1035, at least partially based on measuring the SL CSI-RS, the UE 1005 may send (e.g., using the controller / processor 280, the transmission component 1304, etc.) an SL CSI report for the CSI parameters in the indicated SL CSI report set to the relay UE 1010. The SL CSI report may include the values of the CSI parameters calculated by the UE 1005 and included in the indicated SL CSI report set. In Figure 10 the example shown, the indication from the base station 110 indicates that the first CSI report set (CQI, RI, L1-RSRP, L1-SINR) will be used for the CSI report. Thus, in Figure 10In an example, the SL CSI report may include CQI values, RI values, L1-RSRP values, and L1-SINR values calculated by the UE 1005 at least in part based on measurements of SL CSI-RS.

[0126] As shown by reference numeral 1040, the relay UE 1010 relays (e.g., using the controller / processor 280, etc.) the SL CSI report to the base station 110. An indication received by the base station 110 from the UE 1005 may indicate one or more destinations to which the SL CSI report is to be sent. In Figure 10 an example, the indication from the base station 110 indicates that the destination for the SL CSI report is the base station 110. As Figure 10 shown, the UE 1005 may send the SL CSI report to the relay UE 1010 on a sidelink channel, and the relay UE 1010 sends the SL CSI report to the base station 110 via an access link (e.g., Uu link) communication. Additionally and / or alternatively, the UE 1005 may directly send the SL CSI report to the base station 110 via an access link (Uu link) communication.

[0127] As shown by reference numeral 1045, the base station 110 may coordinate (e.g., using the controller / processor 240, the identification component 1408, etc.) the relay at least in part based on the values of the CSI parameters in the SL CSI report sent from the UE 1005 (via the relay UE 1010). For example, the base station 110 may select one or more sidelink / relay UEs (e.g., the relay UE 1010 and / or other relay UEs) at least in part based on the values of the CSI parameters in the SL CSI report for relaying communication (e.g., data, control information, etc.) to and / or from the UE 1005, scheduling and / or controlling the relayed communication, allocating resources for the relay UEs (e.g., the relay UE 1010 and / or other relay UEs) for sidelink communication, etc.

[0128] In Figure 10In the example, the SL CSI report received by the base station 110 includes a CQI value, an RI value, an L1-RSRP value, and an L1-SINR value. In some aspects, the base station 110 can select one or more relay sidelink / UEs (e.g., relay UE 1010 and / or other relay UEs) at least partially based on the CQI value, the RI value, the L1-RSRP value, the L1-SINR value, and / or a combination thereof for relaying communication to and / or from the UE 1005, scheduling and / or controlling relaying communication to and / or from the UE 1005, allocating resources for the relay UE (e.g., relay UE 1010 and / or other relay UEs) for sidelink communication, etc. For example, the base station 110 can select a sidelink at least partially based on the L1-RSRP value and the L1-SINR value to perform relaying communication to and / or from the UE 1005.

[0129] Using the CSI report set configuration process described in conjunction with Figure 10 enables the base station 110 to configure different CSI report sets with different combinations of CSI parameters for the UE 1005 to report according to the destination and / or purpose of the CSI report. Thus, the UE 1005 can report a specific combination of CSI parameters corresponding to the destination and / or purpose of the CSI report, and thus save computing resources, networking resources, etc., which would otherwise be consumed by the UE 1005 to calculate and report all CSI parameters regardless of the destination and / or purpose of the CSI report.

[0130] As noted above, Figure 10 is provided as an example. Other examples may be different from the example described with respect to Figure 10 described example.

[0131] Figure 11 is a diagram illustrating an example process 1100 performed by a UE, for example, according to the present disclosure. The example process 1100 is an example in which a UE (e.g., UE 120, UE 905, UE 1005, etc.) performs operations associated with sidelink channel state information reporting for sidelink relaying using multiple transmit-receive points.

[0132] As Figure 11 shown, in some aspects, the process 1100 can include: receiving a configuration indicating a plurality of sidelink CSI report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters (block 1110). For example, a UE (e.g., using a receiving processor 258, a transmitting processor 264, a controller / processor 280, a memory 282, etc.) can receive a configuration indicating a plurality of sidelink CSI report sets, as described above, for example, with reference to Figure 9 and / orFigure 10 as described. In some aspects, different sidelink CSI report sets include different combinations of CSI parameters.

[0133] As Figure 11 further shown, in some aspects, process 1100 may include: receiving an indication of a sidelink CSI report set to be reported in a sidelink CSI report from among a plurality of sidelink CSI report sets (block 1120). For example, a UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may receive an indication of a sidelink CSI report set to be reported in a sidelink CSI report from among a plurality of sidelink CSI report sets, as described above, e.g., with reference to Figure 9 and / or Figure 10 described.

[0134] As Figure 11 further shown, in some aspects, process 1100 may include: transmitting a sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set (block 1130). For example, a UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may transmit sidelink CSI, as described above, e.g., with reference to Figure 9 and / or Figure 10 described. In some aspects, the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0135] Process 1100 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.

[0136] In a first aspect, process 1100 includes: receiving an indication of one or more wireless communication devices as a destination for a sidelink CSI report. In a second aspect, separately or in combination with the first aspect, the sidelink CSI report is sent directly or indirectly to one or more wireless communication devices. In a third aspect, separately or in combination with one or more of the first and second aspects, the one or more wireless communication devices include a base station, a relay UE that relays communication between the UE and the base station, a relay UE from which a sidelink CSI reference signal for the sidelink CSI report is received, or a combination thereof.

[0137] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indication of one or more wireless communication devices is a single bit indicating one of the following: a relay UE or a base station, or a relay UE or both a relay UE and a base station.

[0138] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

[0139] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the indication of the sidelink CSI report set is received in one of the following: physical downlink control channel communication from a base station, a media access control (MAC) control element from a base station, a message from a relay UE, or a combination thereof.

[0140] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the first sidelink CSI report set in a plurality of sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter. In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the CSI report is destined for a base station.

[0141] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the second sidelink CSI report set in a plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter. In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the CSI report is destined for a relay UE rather than a base station.

[0142] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the configuration indicates a mapping between a sidelink CSI report set in a plurality of sidelink CSI report sets and a corresponding index value, and the indication of the sidelink CSI report set includes an index value among the corresponding index values. In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the sidelink CSI report is used for millimeter wave communication.

[0143] Although Figure 11illustrates example blocks of process 1100, but in some aspects, process 1100 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner compared to those depicted in Figure 11 In addition or alternatively, two or more of the blocks of process 1100 may be executed in parallel.

[0144] Figure 12 is a diagram illustrating an example process 1200 performed, for example, by a base station. Example process 1200 is an example where a base station (e.g., base station 110, etc.) performs operations associated with sidelink channel state information reporting for sidelink relay using multiple transmit receive points.

[0145] As Figure 12 shown, in some aspects, process 1200 may include: transmitting a configuration indicating a plurality of sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters (block 1210). For example, a base station (e.g., using a transmit processor 220, a receive processor 238, a controller / processor 240, a memory 242, etc.) may transmit a configuration indicating a plurality of sidelink CSI report sets, as described above, for example, with reference to Figure 9 and / or Figure 10 In some aspects, different sidelink CSI report sets include different combinations of CSI parameters.

[0146] As Figure 12 further shown, in some aspects, process 1200 may include: transmitting an indication of the sidelink CSI report set to be reported in a sidelink CSI report among the plurality of sidelink CSI report sets (block 1220). For example, a base station (e.g., using a transmit processor 220, a receive processor 238, a controller / processor 240, a memory 242, etc.) may transmit an indication of the sidelink CSI report set to be reported in a sidelink CSI report among the plurality of sidelink CSI report sets, as described above, for example, with reference to Figure 9 and / or Figure 10 described.

[0147] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0148] In a first aspect, process 1200 includes: receiving a sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated set of sidelink CSI reports. In a second aspect, either alone or in combination with the first aspect, process 1200 includes: identifying, at least in part based on the CSI report, a sidelink to be used for communication between a user equipment (UE) and a relay UE; and communicating with the UE via the identified sidelink.

[0149] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 1200 includes: sending an indication of one or more wireless communication devices that are destinations for the sidelink CSI report. In a fourth aspect, either alone or in combination with one or more of the first through third aspects, the one or more wireless communication devices include a base station, a relay UE that relays communication between the UE and the base station, a relay UE that receives a sidelink CSI reference signal for the sidelink CSI report, or a combination thereof.

[0150] In a fifth aspect, either alone or in combination with one or more of the first through fourth aspects, the indication of the one or more wireless communication devices is a single bit indicating one of the following: a relay UE or a base station, or a relay UE or both a relay UE and a base station.

[0151] In a sixth aspect, either alone or in combination with one or more of the first through fifth aspects, the set of sidelink CSI reports includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

[0152] In a seventh aspect, either alone or in combination with one or more of the first through sixth aspects, the indication of the set of sidelink CSI reports is sent in one of the following: a physical downlink control channel communication, a media access control (MAC) control element, or a combination thereof.

[0153] In an eighth aspect, either alone or in combination with one or more of the first through seventh aspects, a first set of sidelink CSI reports in a plurality of sets of sidelink CSI reports includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter. In a ninth aspect, either alone or in combination with one or more of the first through eighth aspects, the CSI report is destined for a base station.

[0154] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, a second sidelink CSI report set among a plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter. In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the CSI report is destined for a relay UE rather than a base station.

[0155] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the configuration indicates a mapping between a sidelink CSI report set among a plurality of sidelink CSI report sets and a corresponding index value, and the indication of the sidelink CSI report set includes an index value among the corresponding index values. In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the sidelink CSI report is used for millimeter-wave communication.

[0156] Although Figure 12 example blocks of process 1200 are shown, in some aspects, process 1200 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner compared to those depicted in Figure 12 . Additionally or alternatively, two or more of the blocks of process 1200 may be executed in parallel.

[0157] Figure 13 is a block diagram of an example apparatus 1300 for wireless communication according to the present disclosure. Apparatus 1300 may be a UE, or a UE may include apparatus 1300. In some aspects, apparatus 1300 includes a receiving component 1302 and a transmitting component 1304, and the receiving component 1302 and the transmitting component 1304 may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1300 may use the receiving component 1302 and the transmitting component 1304 to communicate with another apparatus 1306 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 1300 may include one or more other components (including, for example, a measurement component 1308).

[0158] In some aspects, apparatus 1300 may be configured to perform one or more operations described herein in connection with Figures 9 - 10 . Additionally or alternatively, apparatus 1300 may be configured to perform one or more processes described herein, such as Figure 11 process 1100. In some aspects, Figure 13 apparatus 1300 and / or one or more components shown in Figure 2 may include one or more components of the UE described above in connection with Figure 13One or more components shown in may be implemented within one or more components described above in connection with Figure 2 Additionally or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0159] The receiving component 1302 may receive a communication from the device 1306, such as a reference signal, control information, data communication, or a combination thereof. The receiving component 1302 may provide the received communication to one or more other components of the device 1300. In some aspects, the receiving component 1302 may perform signal processing on the received communication (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of the device 1306. In some aspects, the receiving component 1302 may include one or more antennas, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described above in connection with Figure 2 description.

[0160] The transmitting component 1304 may transmit a communication to the device 1306, such as a reference signal, control information, data communication, or a combination thereof. In some aspects, one or more other components of the device 1306 may generate a communication and may provide the generated communication to the transmitting component 1304 for transmission to the device 1306. In some aspects, the transmitting component 1304 may perform signal processing on the generated communication (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples), and may transmit the processed signal to the device 1306. In some aspects, the transmitting component 1304 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the UE described above in connection with Figure 2 description. In some aspects, the transmitting component 1304 may be co-located with the receiving component 1302 in a transceiver.

[0161] The receiving component 1302 may receive a configuration indicating multiple sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters. The receiving component may receive an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in the sidelink CSI report. The measuring component 1308 may measure CSI-RS to calculate a set of values for one or more CSI parameters included in the indicated sidelink CSI calculation set. The transmitting component 1304 may transmit sidelink CSI, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0162] Figure 13 The number and arrangement of the illustrated components are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to Figure 13 those illustrated. Additionally, Figure 13 two or more of the illustrated components may be implemented within a single component, or Figure 13 a single illustrated component may be implemented as multiple distributed components. Additionally or alternatively, Figure 13 a group (one or more) of the illustrated components may perform one or more functions described as being performed by Figure 13 another group of the illustrated components.

[0163] Figure 14 is a block diagram of an example apparatus 1400 for wireless communication in accordance with the present disclosure. The apparatus 1400 may be a base station 110, or the base station may include the apparatus 1400. In some aspects, the apparatus 1400 includes a receiving component 1402 and a transmitting component 1404, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1400 may use the receiving component 1402 and the transmitting component 1404 to communicate with another apparatus 1406 (such as a UE, a base station, or another wireless communication device). As further shown, the apparatus 1400 may include one or more components (including, for example, an identifying component 1408).

[0164] In some aspects, the apparatus 1400 may be configured to perform one or more operations described herein in connection with Figures 9 - 10 the description. Additionally or alternatively, the apparatus 1400 may be configured to perform one or more processes described herein, such as Figure 12 process 1200. In some aspects, Figure 14 the apparatus 1400 and / or one or more components shown in Figure 2One or more components of the described base station. Additionally or alternatively, Figure 14 One or more of the components shown in Figure 2 Can be implemented within one or more of the components described above in connection with

[0165] The receiving component 1402 can receive communications from the device 1406, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1402 can provide the received communications to one or more other components of the device 1400. In some aspects, the receiving component 1402 can perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding and other examples), and can provide the processed signals to one or more other components of the device 1406. In some aspects, the receiving component 1402 can include one or more antennas, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the base station described above in connection with Figure 2 Description.

[0166] The transmitting component 1404 can transmit communications to the device 1406, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1406 can generate the communications and can provide the generated communications to the transmitting component 1404 for transmission to the device 1406. In some aspects, the transmitting component 1404 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding and other examples), and can transmit the processed signals to the device 1406. In some aspects, the transmitting component 1404 can include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the base station described above in connection with Figure 2 Description. In some aspects, the transmitting component 1404 can be co-located with the receiving component 1402 in a transceiver.

[0167] The transmitting component 1404 may transmit a configuration indicating multiple sidelink CSI report sets, where different sidelink CSI report sets include different combinations of CSI parameters. The transmitting component 1404 may transmit an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in the sidelink CSI report. The receiving component 1402 may receive the sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set. The identifying component 1408 may identify, at least in part based on the CSI report, a sidelink to be used for communication between a user equipment (UE) and a relay UE.

[0168] Figure 14 The number and arrangement of the components shown are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to Figure 14 those shown. Additionally, Figure 14 two or more of the components shown may be implemented within a single component, or Figure 14 a single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 14 a group (one or more) of the components shown may perform one or more functions described as being performed by Figure 14 another group of components shown.

[0169] Some aspects of the present disclosure are summarized below:

[0170] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: receiving a configuration indicating multiple sidelink channel state information (CSI) report sets, where different sidelink CSI report sets include different combinations of CSI parameters; receiving an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in the sidelink CSI report; and transmitting the sidelink CSI report, where the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0171] Aspect 2: The method according to aspect 1, further comprising: receiving an indication of one or more wireless communication devices as destinations for the sidelink CSI report.

[0172] Aspect 3: The method according to aspect 2, where the sidelink CSI report is sent directly or indirectly to the one or more wireless communication devices.

[0173] Aspect 4: The method according to any one of Aspects 2-3, wherein the one or more wireless communication devices include a base station, a relay UE that relays communication between the UE and the base station, a relay UE that receives a sidelink CSI reference signal for the sidelink CSI report therefrom, or a combination thereof.

[0174] Aspect 5: The method according to any one of Aspects 2-4, wherein the indication of the one or more wireless communication devices is a single bit indicating one of the following: a relay UE or a base station, or the relay UE or both the relay UE and the base station.

[0175] Aspect 6: The method according to any one of Aspects 1-5, wherein the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

[0176] Aspect 7: The method according to any one of Aspects 1-6, wherein the indication of the sidelink CSI report set is received in one of the following: a physical downlink control channel communication from a base station, a media access control (MAC) control element from the base station, a message from a relay UE, or a combination thereof.

[0177] Aspect 8: The method according to any one of Aspects 1-7, wherein a first sidelink CSI report set in the plurality of sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter.

[0178] Aspect 9: The method according to Aspect 8, wherein the CSI report is destined for a base station.

[0179] Aspect 10: The method according to any one of Aspects 1-9, wherein a second sidelink CSI report set in the plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter.

[0180] Aspect 11: The method according to Aspect 10, wherein the CSI report is destined for a relay UE rather than a base station.

[0181] Aspect 12: The method according to any one of Aspects 1-11, wherein the configuration indicates a mapping between a sidelink CSI report set in the plurality of sidelink CSI report sets and a corresponding index value, and wherein the indication of the sidelink CSI report set includes an index value among the corresponding index values.

[0182] Aspect 13: The method according to any one of Aspects 1-12, wherein the sidelink CSI report is used for millimeter wave communication.

[0183] Aspect 14: A method for wireless communication performed by a base station, comprising: transmitting a configuration indicating a plurality of sidelink channel state information (CSI) report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters; and transmitting an indication of a sidelink CSI report set to be reported in a sidelink CSI report among the plurality of sidelink CSI report sets.

[0184] Aspect 15: The method according to Aspect 14, further comprising: receiving the sidelink CSI report, wherein the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

[0185] Aspect 16: The method according to Aspect 15, further comprising: identifying, at least in part based on the sidelink CSI report, a sidelink to be used for communication between a user equipment (UE) and a relay UE; and communicating with the UE via the identified sidelink.

[0186] Aspect 17: The method according to any one of Aspects 14-16, further comprising: transmitting an indication of one or more wireless communication devices as destinations for the sidelink CSI report.

[0187] Aspect 18: The method according to Aspect 17, wherein the one or more wireless communication devices include the base station, a relay UE that relays communication between the UE and the base station, a relay UE that receives a sidelink CSI reference signal for the sidelink CSI report therefrom, or a combination thereof.

[0188] Aspect 19: The method according to any one of Aspects 17-18, wherein the indication of the one or more wireless communication devices is a single bit indicating one of the following: a relay UE or the base station, or a relay UE or both the relay UE and the base station.

[0189] Aspect 20: The method according to any one of aspects 14-19, wherein the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

[0190] Aspect 21: The method according to any one of aspects 14-20, wherein the indication of the sidelink CSI report set is sent in one of the following: physical downlink control channel communication, a media access control (MAC) control element, or a combination thereof.

[0191] Aspect 22: The method according to any one of aspects 14-21, wherein a first sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter.

[0192] Aspect 23: The method according to aspect 22, wherein the sidelink CSI report is destined for the base station.

[0193] Aspect 24: The method according to any one of aspects 14-23, wherein a second sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter.

[0194] Aspect 25: The method according to aspect 24, wherein the sidelink CSI report is destined for a relay UE rather than the base station.

[0195] Aspect 26: The method according to any one of aspects 14-25, wherein the configuration indicates a mapping between a sidelink CSI report set among the plurality of sidelink CSI report sets and a corresponding index value, and wherein the indication of the sidelink CSI report set includes an index value among the corresponding index values.

[0196] Aspect 27: The method according to any one of aspects 14-26, wherein the sidelink CSI report is used for millimeter-wave communication.

[0197] Aspect 28: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform the method of one or more of aspects 1-13.

[0198] Aspect 29: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more of Aspects 1-13.

[0199] Aspect 30: A device for wireless communication, comprising at least one unit for performing the method of one or more of Aspects 1-13.

[0200] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-13.

[0201] Aspect 32: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-13.

[0202] Aspect 33: A device for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform the method of one or more of Aspects 14-27.

[0203] Aspect 34: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more of Aspects 14-27.

[0204] Aspect 35: A device for wireless communication, comprising at least one unit for performing the method of one or more of Aspects 14-27.

[0205] Aspect 36: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 14-27.

[0206] Aspect 37: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 14-27.

[0207] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit aspects to the precise forms disclosed. Modifications and variations can be made in accordance with the above disclosure, or can be obtained from practice of the aspects.

[0208] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or combinations of hardware and software. The actual specific control hardware or software code used to implement these systems and / or methods is not a limitation on the aspects. Accordingly, the operation and behavior of the systems and / or methods are 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 at least in part based on the description herein.

[0209] As used herein, depending on the context, meeting a threshold can refer to a value 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, etc.

[0210] 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 the aspects. In fact, many of these features can be combined in ways not specifically recited in the claims and / or not specifically disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of the aspects includes the combination of each dependent claim with every other claim in the claim set. The phrase referring to "at least one of" a list of items refers to any combination of those items, including a single member. For example, "at least one of the following: 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 of multiples of the same elements (e.g., a - a, a - a - a, a - a - b, a - a - c, a - b - b, a - c - c, b - b, b - b - b, b - b - c, c - c, and c - c - c or any other ordering of a, b, and c).

[0211] None of the elements, acts, or instructions used herein shall be construed as critical or essential unless expressly described as such. Additionally, 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." Further, as used herein, the article "the" is intended to include one or more items referenced in conjunction with the article "the" and may be used interchangeably with "one or more." Additionally, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language is used. Further, as used herein, the terms "has," "have," "having," etc. are intended to be open-ended terms. Additionally, unless expressly stated otherwise, the phrase "based on" is intended to mean "at least partially based on." Further, as used herein, the term "or" when used in a series is intended to be inclusive and may be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A method of wireless communication performed by a user equipment (UE), comprising: receiving a configuration indicating a plurality of sidelink channel state information (CSI) report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters, and wherein the different sidelink CSI report sets are associated with one or more different destinations; receiving an indication of the sidelink CSI report set to be reported in a sidelink CSI report from among the plurality of sidelink CSI report sets; and transmitting the sidelink CSI report to one or more destinations associated with the indicated sidelink CSI report set, the one or more destinations including one or more wireless communication devices, wherein the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set.

2. The method according to claim 1, further comprising: receiving an indication of the one or more destinations for the indicated sidelink CSI report set.

3. The method according to claim 2, wherein, the sidelink CSI report is transmitted directly or indirectly to the one or more wireless communication devices.

4. The method according to claim 2, wherein, the one or more wireless communication devices include a network entity, a relay UE that relays communication between the UE and the network entity, a relay UE from which a sidelink CSI reference signal for the sidelink CSI report is received, or a combination thereof.

5. The method according to claim 2, wherein, the indication of the one or more wireless communication devices is a single bit indicating one of the following: a relay UE or a network entity, or the relay UE or both the relay UE and the network entity.

6. The method according to claim 1, wherein, the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

7. The method according to claim 1, wherein, the indication of the sidelink CSI report set is received in one of the following: a physical downlink control channel communication from a network entity, a media access control (MAC) control element from the network entity, a message from a relay UE, or a combination thereof.

8. The method according to claim 1, wherein, a first sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter.

9. The method according to claim 8, wherein, the CSI report is destined for a network entity.

10. The method according to claim 1, wherein, The second sidelink CSI report set among the multiple sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter.

11. The method according to claim 10, wherein, the CSI report is destined for a relay UE rather than a network entity.

12. The method according to claim 1, wherein, the configuration indicates a mapping between a sidelink CSI report set among the multiple sidelink CSI report sets and a corresponding index value, and wherein the indication of the sidelink CSI report set includes an index value among the corresponding index values.

13. The method according to claim 1, wherein, the sidelink CSI report is used for millimeter-wave communication.

14. A method of wireless communication performed by a network entity, comprising: sending a configuration indicating multiple sidelink channel state information (CSI) report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters, and wherein the different sidelink CSI report sets are associated with one or more different destinations; and sending an indication of the sidelink CSI report set among the multiple sidelink CSI report sets to be reported in a sidelink CSI report to one or more destinations associated with the indicated sidelink CSI report set, the one or more destinations including one or more wireless communication devices.

15. The method according to claim 14, further comprising: receiving the sidelink CSI report, wherein the sidelink CSI report includes a set of values for one or more CSI parameters included in the indicated sidelink CSI report set; identifying, at least in part based on the sidelink CSI report, a sidelink to be used for communication between a user equipment (UE) and a relay UE; and communicating with the UE via the identified sidelink.

16. The method according to claim 14, further comprising: sending an indication of the one or more destinations for the sidelink CSI report set, wherein the one or more wireless communication devices include the network entity, a relay UE that relays communication between the UE and the network entity, a relay UE from which a sidelink CSI reference signal for the sidelink CSI report is received, or a combination thereof.

17. The method according to claim 14, wherein, the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

18. The method according to claim 14, wherein, the first sidelink CSI report set among the multiple sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter.

19. The method according to claim 14, wherein, the second sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter.

20. The method according to claim 14, wherein, the configuration indicates a mapping between a sidelink CSI report set among the plurality of sidelink CSI report sets and a corresponding index value, and wherein the indication of the sidelink CSI report set includes an index value among the corresponding index values.

21. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to: receive a configuration indicating a plurality of sidelink channel state information (CSI) report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters, and wherein the different sidelink CSI report sets are associated with one or more different destinations; receive an indication of a sidelink CSI report set among the plurality of sidelink CSI report sets to be reported in a sidelink CSI report; and send the sidelink CSI report to one or more destinations associated with the indicated sidelink CSI report set, the one or more destinations including one or more wireless communication devices, wherein the sidelink CSI report includes a set of values of one or more CSI parameters included in the indicated sidelink CSI report set.

22. The UE according to claim 21, wherein, the one or more processors are further configured to: receive an indication of the one or more destinations for the sidelink CSI report set.

23. The UE according to claim 22, wherein, the sidelink CSI report is sent directly or indirectly to the one or more wireless communication devices.

24. The UE according to claim 22, wherein, the one or more wireless communication devices include a network entity, a relay UE that relays communication between the UE and the network entity, a relay UE from which a sidelink CSI reference signal for the sidelink CSI report is received, or a combination thereof.

25. The UE according to claim 21, wherein, the sidelink CSI report set includes one or more of the following: a channel quality indicator parameter, a precoding matrix indicator parameter, a CSI reference signal resource indicator parameter, a layer indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, a layer 1 signal-to-interference-plus-noise ratio parameter, or a combination thereof.

26. The UE according to claim 21, wherein, the indication of the sidelink CSI report set is received in one of the following: physical downlink control channel communication from a network entity, a media access control (MAC) control element from the network entity, a message from a relay UE, or a combination thereof.

27. The UE according to claim 21, wherein, The first sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter, a rank indicator parameter, a layer 1 reference signal received power parameter, and a layer 1 signal-to-interference-plus-noise ratio parameter, wherein the CSI report is destined for a network entity.

28. The UE according to claim 21, wherein, The second sidelink CSI report set among the plurality of sidelink CSI report sets includes a channel quality indicator parameter and a precoding matrix indicator parameter, wherein the CSI report is destined for a relay UE rather than a network entity.

29. The UE according to claim 21, wherein, The configuration indicates a mapping between a sidelink CSI report set among the plurality of sidelink CSI report sets and a corresponding index value, and wherein the indication of the sidelink CSI report set includes an index value among the corresponding index values.

30. A network entity for wireless communication, comprising: a memory; and one or more processors coupled to the memory, configured to: transmit a configuration indicating a plurality of sidelink channel state information (CSI) report sets, wherein different sidelink CSI report sets include different combinations of CSI parameters, and wherein the different sidelink CSI report sets are associated with one or more different destinations; and transmit an indication of the sidelink CSI report set to be reported in a sidelink CSI report among the plurality of sidelink CSI report sets to one or more destinations associated with the indicated sidelink CSI report set, the one or more destinations including one or more wireless communication devices.

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