Method and apparatus for receiving and transmitting information

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method performed by a user equipment (UE) in a wireless communication system and the UE performing the method, wherein the method includes: receiving a channel state information (CSI) reporting configuration, wherein the CSI reporting configuration configures a first set associated with prediction and a second set for channel measurement; and determining and / or reporting CSI associated with the first set based on channel measurement of resources in the second set and an order of IDs of the resources in the second set.

Description

METHOD AND APPARATUS FOR RECEIVING AND TRANSMITTING INFORMATION

[0001] The present application relates to the technical field of wireless communication, and more specifically, to a method and device for receiving and transmitting information.

[0002] 5th generation (5G) mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6 gigahertz (GHz)" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as millimeter wave (mmWave) including 28GHz and 39GHz. In addition, it has been considered to implement 6th generation (6G) mobile communication technologies (referred to as Beyond 5G systems) in terahertz (THz) bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencfies one-tenth of 5G mobile communication technologies.

[0003] Since the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced mobile broadband (eMBB), ultra reliable low latency communications (URLLC), and massive machine-type communications (mMTC), there has been ongoing standardization regarding beamforming and massive multi input multi output (MIMO) for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (e.g., operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of bandwidth part (BWP), new channel coding methods such as a low density parity check (LDPC) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0004] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as vehicle-to-everything (V2X) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, new radio-unlicensed (NR-U) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, new radio (NR) user equipment (UE) power saving, non-terrestrial network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0005] Moreover, there is ongoing standardization in air interface architecture / protocol regarding technologies, such as industrial Internet of things (IIoT), for supporting new services through interworking and convergence with other industries, integrated access and backhaul (IAB) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and dual active protocol stack (DAPS) handover, and two-step random access for simplifying random access procedures (2-step random access channel (RACH) for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (e.g., service based architecture or service based interface) for combining network functions virtualization (NFV) and software-defined networking (SDN) technologies, and mobile edge computing (MEC) for receiving services based on UE positions.

[0006] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with extended reality (XR) for efficiently supporting augmented reality (AR), virtual reality (VR), mixed reality (MR) and the like, 5G performance improvement and complexity reduction by utilizing artificial intelligence (AI) and machine learning (ML), AI service support, metaverse service support, and drone communication.

[0007] Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies, such as full dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0008] The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure.

[0009] The present disclosure provides a method and apparatus for data transmission in a wireless network system.

[0010] According to an aspect of an exemplary embodiment, there is provided a communication method in a wireless communication.

[0011] Aspects of the present disclosure provide efficient communication methods in a wireless communication system.

[0012] The above and other aspects, features and advantages of the disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0013] FIG. 1 illustrates an overall structure of an example wireless communication network according to various embodiments of the disclosure;

[0014] FIG. 2a illustrates a transmission path 200 in a wireless communication network according to various embodiments of the disclosure;

[0015] FIG. 2b illustrates a reception path 250 in a wireless communication network according to various embodiments of the disclosure;

[0016] FIG. 3a illustrates the structures of a user equipment (UE) in a wireless communication network according to various embodiments of the disclosure;

[0017] FIG. 3b illustrates the structures of a base station in a wireless communication network according to various embodiments of the disclosure;

[0018] FIG. 4 illustrates a method performed by a user equipment (UE) according to various embodiments of the disclosure;

[0019] FIG. 5 illustrates a method performed by a base station according to various embodiments of the disclosure;

[0020] FIG. 6 illustrates a structure of a user equipment according to various embodiments of the disclosure;

[0021] FIG. 7 illustrates a structure of a base station according to various embodiments of the disclosure.

[0022] In order to enhance the scheduling efficiency of the 5G wireless communication system, a base station needs to obtain channel state information (CSI) to schedule according to the CSI fed back by a terminal equipment. However, how to further enhance the performance of CSI reporting is an issue to be solved.

[0023] An aspect of the disclosure provides a method performed by a user equipment (UE) in a wireless communication system, which includes receiving a Channel state information CSI reporting configuration, wherein the CSI reporting configuration configures a first set associated with prediction and a second set for channel measurement; and determining and / or reporting CSI associated with the first set based on channel measurement of resources in the second set and an order of IDs of the resources in the second set.

[0024] In an example, the second set includes K2 resources, and each of the K2 resources is associated with a precoding vector; the first set includes K1 resources or K1 vector identifications IDs for precoding, wherein the K1 resources and the K1 precoding vectors are in one-to-one correspondence, and K1 and K2 are integers greater than 1.

[0025] In an example, the method further includes: the UE does not perform measurement for the first set; or the UE determines whether to perform measurement for the first set based on the CSI reporting configuration or UE capability.

[0026] In an example, if the first set is a CSI-RS resource set: the first set is configured with a repetition parameter, and the first set is not configured with a tracking reference signal TRS information parameter, and / or the first set is a periodic CSI-RS resource set.

[0027] In an example, each of the K1 resources has the same number of antenna ports, wherein the number of the antenna ports is 1 or 2.

[0028] In an example, the first set is associated with at least one of a number N1of antenna ports in first dimension, a number N2of antenna ports in second dimension, an oversampling factor O1and an oversampling factor O2, wherein precoding vectors associated with the first set are determined based on at least one of N1, N2, O1and O2associated with the first set; and the second set is associated with at least one of N1, N2, O1and O2, wherein the precoding vectors associated with the second set are determined based on at least one of N1, N2, O1and O2associated with the second set.

[0029] In an example, the mapping relationship between the vector identifications IDs for precoding included in the first set and the precoding vectors associated with the first set is predefined or configured by a base station, and a mapping relationship between the vector identifications IDs for precoding associated with the second set and the precoding vectors associated with the second set is predefined or configured by the base station.

[0030] In an example, when the CSI reporting configuration includes first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the resources in the second set are divided into N_predicted groups, where N_predicted is an integer greater than 1; wherein: the CSI is determined by the UE based on an assumption that the y-th resource of each of the N_predicted groups has an antenna port of the same index; and / or the CSI is determined by the UE based on the assumption that the y-th resource of each of the N_predicted groups has the same quasi-co-location QCL parameter.

[0031] In an example, when the CSI reporting configuration does not include first information for time domain prediction, reporting the CSI includes reporting N different predicted CSI-RS resource indicators CRIs and / or synchronization signal / physical broadcast channel SSB resource indicators SSBRIs in a report occasion, wherein the predicted CRIs and / or SSBRIs are determined based on resources in the first set; or reporting N different predicted precoder vector indicators PVIs in a report occasion, wherein the predicted PVIs are determined based on the vector identifications IDs for precoding included in the first set, wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1.

[0032] In an example, wherein when the CSI reporting configuration includes first information for time domain prediction, reporting the CSI includes reporting predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted CRIs and / or SSBRIs, and the predicted CRIs and / or SSBRIs are determined based on resources in the first set; or reporting the predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted PVIs, and the predicted PVIs are determined based on the IDs of the precoding vectors associated with the first set, wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1, and F is determined based on the first information and is an integer greater than or equal to 1.

[0033] In an example, the method further includes reporting an index of a UE capability value set in a report occasion, and the index of the UE capability value set is associated with all CSIs reported in the report occasion; or reporting indexes of UE capability value sets associated with each CSI in a report occasion, wherein the indexes of UE capability value sets associated with each CSI are the same.

[0034] In an example, if a time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "not configured", the channel measurement for computing predicted CSI and / or predicted layer 1-reference signal received power L1-RSRP corresponding to the predicted CSI are determined based on an occasion of each reference signal in the second set no later than a CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration does not include first information for time domain prediction, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is a semi-persistent CSI-RS resource set or a periodic CSI-RS resource set or an SSB resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest K_case2 consecutive occasion of the reference signal in the second set no later than the CSI reference resource, wherein K_case2 is predefined or determined based on UE capability.

[0035] In an example, if the CSI reporting configuration includes the first information for time domain prediction, the UE ignores the time restriction parameter for channel measurement configured by the CSI reporting configuration; or if the CSI reporting configuration includes the first information for time domain prediction, the UE expects that the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured".

[0036] In an example, the method further includes reporting information associated with UE capability, wherein the information associated with UE capability indicates the maximum total number of resources for prediction supported in a slot, and a first resource associated with the first set and / or the second set is counted based on the first set and / or the second set for the information associated with the UE capability.

[0037] In an example, for the CSI reporting configuration, the first resource is counted based on one of the followings: if the first resource is in the second set, the first resource is counted once or Z times; if the first resource is in the first set and the first set is measured, the first resource is counted once; if the first resource is in the first set and the first set is not measured, the first resource is not counted; if the first resource is in the first set and the first resource is in the second set and the first set is measured, the first resource is counted twice or Z+1 times; if the first resource is in the first set and the first resource is in the second set and the first set is not measured, the first resource is counted once or Z times, where Z is determined based on the UE capability and Z is an integer greater than or equal to 0.

[0038] In an example, when the second set is a periodic CSI-RS resource set or a semi-persistent CSI-RS resource set or an SSB resource set and the CSI reporting configuration includes the first information for time domain prediction, the number of times the first resource is counted is determined based on Z.

[0039] In an example, the method further includes reporting information associated with the UE capability associated with prediction, wherein the information associated with the UE capability indicates one or more information, wherein each information includes one or more precoding vectors associated with prediction and one or more precoding vectors associated with measurement.

[0040] In an example, the first set is configured based on the one or more precoding vectors associated with prediction in second information of the one or more information; and the second set is configured based on the one or more precoding vectors associated with measurement in the second information.

[0041] Another aspect of the disclosure provides a method performed by a user equipment (UE) in a wireless communication system, which includes receiving a channel state information CSI reporting configuration; and if a reported reference signal number parameter associated with the CSI reporting configuration is greater than 4, reporting an index of a UE capability value set, wherein the index of the UE capability value set is for all the reported CSI-RS resource indicator CRI and / or synchronization signal and physical broadcast channel resource indicator SSBRI and L1-RSRP pairs.

[0042] Another aspect of the disclosure provides a method performed by a base station in a wireless communication system, which includes transmitting a channel state information CSI reporting configuration, wherein the CSI reporting configuration is associated with a first set associated with prediction and a second set for channel measurement; and receiving CSI associated with the first set, wherein the CSI associated with the first set is determined based on the channel measurement of resources in the second set and an ID order of the resources in the second set.

[0043] Another aspect of the disclosure provides a user equipment including a transceiver and a controller coupled to the transceiver, the controller is configured to perform the above methods that may be performed by the user equipment.

[0044] Yet another aspect of the disclosure provides a base station including a transceiver and a controller coupled to the transceiver, the controller is configured to perform the above methods that may be performed by the base station.

[0045] The method provided by the disclosure may improve the performance of the CSI, and further improve the scheduling efficiency of the communication system.

[0046] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called “Beyond 4G networks” or “Post-LTE systems”.

[0047] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0048] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0049] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0050] The transmission from base station to User Equipment (UE) is called downlink, and the transmission from UE to base station is called uplink.

[0051] Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term “couple” and its derivatives refer to any direct or indirect communication between two or more elements, whether those elements are in physical contact with one another. The terms “transmit,” “receive,” and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication. The terms “include” and “comprise,” as well as derivatives thereof, mean inclusion without limitation. The term “or” is inclusive, meaning and / or. The phrase “associated with,” as well as derivatives thereof, means to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term “controller” means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase “at least one of,” when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. For example, “at least one of: A, B, and C” includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. Likewise, the term “set” means one or more. Accordingly, a set of items can be a single item or a collection of two or more items.

[0052] Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms “application” and “program” refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase “computer readable program code” includes any type of computer code, including source code, object code, and executable code. The phrase “computer readable medium” includes any type of medium capable of being accessed by a computer, such as read only memory (ROM), random access memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. A “non-transitory” computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

[0053] Definitions for other certain words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.Hereinafter, embodiments of the disclosure will be described in detail with reference to the accompanying drawings. It should be noted that in the drawings, the same or similar elements are denoted by the same or similar reference numerals as far as possible. In addition, detailed descriptions of known functions or configurations that may make the subject matter of the disclosure unclear will be omitted.

[0054] When describing the embodiments of the disclosure, descriptions related to technical contents that are well known in the field and not directly related to the disclosure will be omitted. This unnecessary description is omitted to prevent the main idea of the disclosure from being blurred and to convey the main idea more clearly.

[0055] For the same reason, some elements may be exaggerated, omitted or schematically shown in the drawings. In addition, the size of each component does not fully reflect the actual size. In the drawings, the same or corresponding elements have the same reference numerals.

[0056] Advantages and features of the disclosure and ways to achieve them will become clear by referring to the embodiments described in detail below in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments set forth below, but can be realized in various forms. The following examples are provided only to fully disclose this disclosure and to inform those skilled in the art of its scope, and this disclosure is only limited by the scope of the appended claims. Throughout this specification, the same or similar reference numerals indicate the same or similar elements.

[0057] FIG. 1 illustrates an example wireless network 100 according to various embodiments of the disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 may be used interchangeably without departing from the scope of the disclosure.

[0058] The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data networks.

[0059] Depending on a type of the network, other well-known terms such as “base station” or “access point” can be used instead of “gNodeB” or “gNB”. For convenience, the terms “gNodeB” and “gNB” are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And depending on the type of the network, other well-known terms such as “mobile station”, “user station”, “remote terminal”, “wireless terminal” or “user apparatus” can be used instead of “user equipment” or “UE”. For convenience, the terms “user equipment” and “UE” are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).

[0060] gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0061] The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.

[0062] As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0063] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0064] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the disclosure.

[0065] The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0066] In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT / FFT used in gNB 102 and UE 116. The size N IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time domain output symbols from the Size N IFFT block 215 to generate a serial time domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.

[0067] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time domain baseband signal. The Serial-to-Parallel block 265 converts the time domain baseband signal into a parallel time domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0068] Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0069] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0070] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.)

[0071] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0072] FIG. 3a illustrates an example UE 116 according to the disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the disclosure to any specific implementation of the UE.

[0073] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmission (TX) processing circuit 303, a microphone 304, and a reception (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, an input device(s) 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0074] The RF transceiver 302 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 301. The RF transceiver 302 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 305, where the RX processing circuit 305 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 305 transmits the processed baseband signal to speaker 306 (such as for voice data) or to controller / processor 307 for further processing (such as for web browsing data).

[0075] The TX processing circuit 303 receives analog or digital voice data from microphone 304 or other outgoing baseband data (such as network data, email or interactive video game data) from controller / processor 307. The TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuit 303 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 301.

[0076] The controller / processor 307 can include one or more processors or other processing devices and execute an OS 312 stored in the memory 311 in order to control the overall operation of UE 116. For example, the controller / processor 307 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 302, the RX processing circuit 305 and the TX processing circuit 303 according to well-known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0077] The controller / processor 307 is also capable of executing other processes and programs residing in the memory 311, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. The controller / processor 307 can move data into or out of the memory 311 as required by an execution process. In some embodiments, the controller / processor 307 is configured to execute the application 313 based on the OS 312 or in response to signals received from the gNB or the operator. The controller / processor 307 is also coupled to an I / O interface 308, where the I / O interface 308 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 308 is a communication path between these accessories and the controller / processor 307.

[0078] The controller / processor 307 is also coupled to the input device(s) 309 and the display 310. An operator of UE 116 can input data into UE 116 using the input device(s) 309. The display 310 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 311 is coupled to the controller / processor 307. A part of the memory 311 can include a random access memory (RAM), while another part of the memory 311 can include a flash memory or other read-only memory (ROM).

[0079] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the controller / processor 307 may be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0080] FIG. 3b illustrates an example gNB 102 according to the disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0081] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuit 374, and a reception (RX) processing circuit 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0082] RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0083] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller / processor 378. TX processing circuit 374 encodes, multiplexes and / or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0084] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0085] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0086] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0087] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0088] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and / or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.

[0089] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0090] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0091] In the disclosure, the term “channel state information (CSI) reporting configuration” may be used interchangeably with the terms “CSI reporting configuration information” or “information for CSI reporting configuration” or “information for configuring CSI reporting” or “CSI reporting setting”.

[0092] In the disclosure, the term “reference signal” may be used interchangeably with the terms “resource for channel measurement” or “reference signal resource”.

[0093] In the disclosure, the term “port of resource” may be used interchangeably with the term “port associated with resource”.

[0094] In the disclosure, the term “mapping order of CSI” and the term “order of CSI” or “order of CSI information bits” or “order of the CSI fields” may be used interchangeably. In the disclosure, the term “port” may be used interchangeably with the term “antenna port”.

[0095] In the disclosure, the term “quasi-co-location (QCL) parameter” may be used interchangeably with the terms “QCL information” or “QCL assumption” or “QCL configuration” or “QCL configuration and QCL type” or “transmission configuration indication (TCI) state” or “TCI state configuration” or “TCI state configuration information” or “TCI state information”.

[0096] In the disclosure, “CSI resource setting associated with CSI reporting configuration” may be used interchangeably with the terms “CSI resource setting corresponding to CSI reporting configuration” or “resource associated with CSI reporting configuration” or “measurement associated with CSI reporting configuration” or “measurement resource associated with CSI reporting configuration” or “resource for channel measurement and / or interference measurement associated with CSI reporting configuration”.

[0097] In the disclosure, the term “UE capability” may be used interchangeably with the terms “UE capability parameter” or “reported UE capability” or “UE capability signaling” or “reported UE capability parameter” or “UE feature” or “information associated with UE capability”.

[0098] In the disclosure, the term “CSI” may be used interchangeably with the terms “CSI parameter” or “CSI quantity”. Specifically, the CSI may include at least one of the followings:

[0099] - CSI reference signal (CSI-RS) resource indicator (CRI);

[0100] - Rank Indicator (RI);

[0101] - Precoding Matrix Indicator (PMI);

[0102] - Precoding Vector Indicator (PVI);

[0103] - Channel quality indicator (CQI);

[0104] - Layer indicator (LI);

[0105] - Synchronization signal / physical broadcast channel (SSB) resource indicator (SSBRI);

[0106] - Layer 1-reference signal received power (L1-RSRP);

[0107] - Layer 1-Signal to Interference and Noise Ratio (L1-SINR);

[0108] - CapabilityIndex.

[0109] In the disclosure, the term “CapabilityIndex” may be used interchangeably with “an index of UE capability value set”.

[0110] In the disclosure, the term “PVI” may be used interchangeably with “CRI” or “SSBRI”.

[0111] In the disclosure, the term “precoding vector” may be used interchangeably with the terms “vector for precoding” or “vector for beamforming” or “codebook” or “codebook for beamforming” or “beam codebook” or “CSI codebook” or “beam” or “beam direction” or “reference signal” or “reference signal resource” or “predicted index” or “predicted beam index” or “downlink spatial domain transmission filter” or “spatial domain filter” or “transmission spatial domain filter”.

[0112] In the disclosure, the term “beam identification (ID)” may be used interchangeably with “beam information” or “index of vectors for precoding” or “CSI-RS resource indicator (CRI)” or “SSB resource indicator (SSBRI) or “CRI and / or SSBRI” or “beam resource ID” or “downlink beam resource ID” or “downlink beam information” or “downlink spatial domain transmission filter ID” or “spatial domain filter ID” or “transmission spatial domain filter ID”.

[0113] In the disclosure, the CSI reported by the UE may be the CSI reported by the UE in a report or in a report instance. For example, the reported CSI may include one or more predicted beam IDs and one or more L1-RSRPs. Optionally, one or more predicted beam IDs and one or more L1-RSRPs are in one-to-one correspondence. Optionally, the L1-RSRP may be a predicted L1-RSRP. Optionally, the L1-RSRP may be a predicted L1-RSRP and a measured L1-RSRP.

[0114] In the disclosure, the term “time domain information is configured” may be used interchangeably with “predicted CSI is configured” or “time domain prediction is configured” or “time domain beam prediction is configured” or “CSI reporting configuration includes time domain information” or “report associated CSI reporting configuration includes predicted CSI” or “CSI reporting configuration is configured with time domain prediction” or “CSI reporting configuration is configured with time domain beam prediction”.

[0115] In the disclosure, the term “time domain information” may be used interchangeably with “information for time domain prediction” or “information on indicating the time instances associated with the report for time domain prediction”.

[0116] In the disclosure, the term “time domain prediction” may be used interchangeably with “time domain beam” or “time domain downlink beam”.

[0117] In the disclosure, the term “supported by UE” may be used interchangeably with the term “preferred by UE”.

[0118] In the disclosure, the term “information for determining association of first set and second set” may be used interchangeably with the term “association information between first set and second set”.

[0119] FIG. 4 illustrates a method 400 performed by a user equipment (UE) according to various embodiments of the disclosure. The method 400 includes: at 401, the UE receives a CSI reporting configuration, wherein the CSI reporting configuration configures a first set associated with prediction and a second set for channel measurement; at 402, the UE determines and / or reports CSI associated with the first set based on channel measurement of resources in the second set and an order of IDs of the resources in the second set. That is, the method provided by the disclosure predicts which one or part of elements (resources or vectors for precoding corresponding to the resources) in the first set may be selected for CSI reporting of the UE based on the measurement of the resources in the second set. Various embodiments are described in detail below.

[0120] Embodiment 1

[0121] Optionally, the UE may report / transmit first reporting information. Optionally, the first reporting information may indicate / include first UE capability. Optionally, the first reporting information indicates information supported by the UE (or information preferred by the UE). For example, the UE reports first reporting information including the first UE capability to the base station. Optionally, the UE reports the first reporting information before receiving the CSI reporting configuration. Optionally, the first reporting information is for artificial intelligence (AI) / machine learning (ML). Optionally, the first reporting information is associated with / includes capability associated with artificial intelligence (AI) / machine learning (ML). Optionally, the first reporting information may indicate that the AI / ML capability at the UE side is supported. Optionally, the first reporting information may be associated with beam prediction, for example, the first reporting information indicates the capability of the UE to support beam prediction. Optionally, the beam prediction may be the beam prediction based on L1-RSRP measurement. Optionally, beam prediction may include time domain beam prediction and / or spatial domain beam prediction. Optionally, the first reporting information may include / be associated with / correspond to one or more information. Optionally, the one or more information (or each information) may be used to indicate the relationship (e.g., mapping relationship, or spatial relationship) between the beam supported by the UE for measurement and the predicted beam. Optionally, the one or more information (or each information) may be used to indicate the relationship (e.g., mapping relationship, or spatial relationship) between a set of beams supported by the UE for measurement and a set of predicted beams. Optionally, the one or more information (or each information) may be used to indicate the relationship (e.g., mapping relationship or spatial relationship) between a set of precoding vectors supported by the UE for measurement and a set of precoding vectors for prediction. Optionally, the one or more information (or each information) may be used to indicate the mapping relationship between the first set (supported by the UE / preferred by the UE) and the second set. Optionally, in the disclosure, one / each information includes / indicates / is associated with at least one of the followings:

[0122] - Optionally, the one or more precoding vectors associated with prediction. Optionally, the IDs of the one or more precoding vectors associated with prediction. Optionally, the number of the one or more precoding vectors associated with prediction. Optionally, the one or more precoding vectors associated with the first set. Optionally, the IDs of the one or more precoding vectors associated with the first set. Optionally, the number of the one or more precoding vectors associated with the first set. Optionally, the one or more precoding vectors associated with the first set refer to the one or more precoding vectors used to configure / associate the first set. Optionally, the size of the first set (for example, K1), for example, the number of elements included in the first set. Optionally, the number of resources corresponding to / associated with / included in the first set. Optionally, the number of precoding vectors corresponding to / associated with / included in the first set. The term “associated with prediction” may be used interchangeably with “used for prediction”. Here, descriptions of “first set” and “precoding vector” are as follows.

[0123] - Optionally, a parameter associated with the one or more precoding vectors associated with prediction (e.g., a parameter associated with spatial domain, or a parameter associated with antenna ports). Optionally, the parameter is applicable to each of the one or more precoding vectors associated with prediction. Optionally, the parameter includes at least one of the number of antenna ports in first dimension (N1), the number of antenna ports in second dimension (N2), the oversampling factor (O1) associated with N1, and the oversampling factor (O2) associated with N2.

[0124] - Optionally, the one or more precoding vectors associated with measurement. Optionally, the IDs of the one or more precoding vectors associated with measurement. Optionally, the number of the one or more precoding vectors associated with measurement. Optionally, the one or more precoding vectors associated with the second set. Optionally, the IDs of the one or more precoding vectors associated with the second set. Optionally, the number of the one or more precoding vectors associated with the second set. Optionally, the one or more precoding vectors associated with the second set refer to the one or more precoding vectors used to configure / associate the second set. Optionally, the size of the second set (e.g., K2), e.g., the number of elements included in the second set. Optionally, the number of resources corresponding to / associated with / included in the second set. Optionally, the number of precoding vectors corresponding to / associated with / included in the second set. The term “associated with measurement” may be used interchangeably with “used for measurement”. Here, descriptions of “second set” and “precoding vector” are as follows.

[0125] - Optionally, a parameter associated with the one or more precoding vectors associated with measurement (e.g., a parameter associated with spatial domain, or a parameter associated with antenna ports). Optionally, the parameter is applicable to each of the one or more precoding vectors associated with measurement. Optionally, the parameter includes at least one of N1, N2, O1 and O2.

[0126] - Optionally, spatial domain information. Optionally, the spatial domain information may include tilt angle information. Optionally, the tilt angle information may include a first dimension tilt angle and a second dimension tilt angle. For example, the first dimension tilt angle and the second dimension tilt angle based on the rectangular coordinate system. For example, the first dimension tilt angle and the second dimension tilt angle based on the polar coordinate system. Optionally, the spatial domain information is applicable to the one or more precoding vectors associated with prediction and / or the one or more precoding vectors associated with measurement. Because the precoding vectors for prediction and the precoding vectors for measurement are based on the same panel, they may share the spatial domain information to reduce signaling overhead. Optionally, the spatial domain information may include the TCI state information. Optionally, the spatial domain information may include / indicate the TCI state information. Optionally, the spatial domain information may include / indicate the TCI state information corresponding to each precoding vector.

[0127] - An information identifier. For example, the information identifier refers to the ID configured by the higher-layer signaling. For example, the information identifier is used to identify the corresponding information.

[0128] - A consistency identifier. Optionally, the consistency identifier refers to the ID configured by the higher-layer signaling. Optionally, the consistency identifier is used to determine / ensure the consistency of training and inference at the UE side. Optionally, the UE may perform life cycle management (LCM) operation on the (corresponding) model based on the consistency identifier. Optionally, the consistency identifier is used for training and / or inference (e.g., of the model). Optionally, the consistency identifier is used for training and / or inference at the UE side. Optionally, the consistency identifier is for model training and / or model inference at the UE side. By providing the consistency identifier to the base station, the UE may specify the consistency identifier supported by the UE such that the base station may use the corresponding consistency identifier for configuration / indication, such that the UE may performing training and / or inference with the correct AI / ML model.

[0129] - A data set identifier. Optionally, the data set identifier refers to the ID configured by the higher-layer signaling. Optionally, the data set identifier refers to the data set associated with the information. Optionally, the data set identifier is used to determine / ensure the consistency of training and inference at the UE side. Optionally, the UE may perform Life cycle management (LCM) operation on the (corresponding) model based on the data set identifier. Optionally, the data set identifier is used for training and / or inference at the UE side. Optionally, the data set identifier is for model training and / or model inference at the UE side. By providing the data set identifier to the base station, the UE may specify the data set supported by the UE, for the base station to configure / indicate for the corresponding data set, such that the UE may perform inference with the AI / ML model trained through the data set.

[0130] - An associated identifier. Optionally, the associated identifier refers to the ID configured by the higher-layer signaling. Optionally, the associated identifier is the mapping relationship / association relationship for indicating / representing / associating the first set and the second set. Optionally, the associated identifier is used to determine / ensure the consistency of training and inference at the UE side. Optionally, the UE may perform life cycle management (LCM) operation on the corresponding model based on the associated identifier. Optionally, the associated identifier is for model training and / or model inference at the UE side. By providing the associated identifier to the base station, the UE may specify the data set supported by the UE / preferred by the UE for the base station to configure / indicate for the corresponding data set, such that the UE may perform inference with the AI / ML model trained through the data set.

[0131] - Time information associated with the associated identifier / data set identifier / consistency identifier. Below is described taking the associated identifier as an example. Optionally, the time information is used to indicate the time information of data used in the development (e.g., training / updating) of the AI / ML model associated with the associated identifier (in the information / corresponding to the information). For example, the time information is used to indicate the acquisition time of data used in the development (e.g., training / updating) of the AI / ML model associated with the associated identifier (in the information / corresponding to the information). Optionally, the acquisition time may be the latest / earliest acquisition time. Optionally, the acquisition time may be a time period. Optionally, the UE may indicate / report the starting point and / or length of the time period. Optionally, the UE may indicate / report the starting point and / or ending point of the time period. Since the base station may change the setting for an associated identifier at a specific time, the time information associated with the associated identifier reported by the UE can help the base station to determine whether the associated identifier supported / preferred by the UE is valid / expired, such that the base station may configure the appropriate associated identifier to help the UE to perform model inference, thereby improving the reliability of the communication system.

[0132] - Information for determining the association of the first set and the second set. Optionally, the information for determining the association of the first set and the second set may be referred as the association information of the first set and the second set. Optionally, the association information may include the mapping relationship(s) between the elements of the first set and the elements of the second set. For example, for a mapping relationship, the association information indicates that the k1-th element (1 ≤ k1 ≤ K1) in the first set is associated with the k2-th element (1 ≤ k2 ≤ K2) in the second set, where K1 is the size of the first set and K2 is the size of the second set. For example, for a mapping relationship, the association information includes a parameter k1 and a parameter k2. The parameter k1 and the parameter k2 indicate that the k1-th element (1 ≤ k1 ≤ K1) in the first set is associated with the k2-th element (1 ≤ k2 ≤ K2) in the second set, where K1 is the size of the first set and K2 is the size of the second set. Optionally, an element in the first set being associated with an element in the second set may be an element in the first set being associated with an element in the second set in spatial domain (for example, an element in the first set being quasi-co-located or type D quasi-co-located with an element in the second set). Optionally, an element in the first set being associated with an element in the second set may be an element in the first set and an element in the second set corresponding to the same beam (or corresponding to the same spatial domain filter). Optionally, the first set may be a set for prediction. Optionally, the second set may be a set for measurement. Here, descriptions of “the first set” and “the second set” are as follows. By providing the association information of the first set and the second set to the base station, the UE may specify the combination of the first set and the second set supported by the UE / preferred by the UE for the base station to configure / indicate the corresponding combination, such that the UE may use the AI / ML model conforming to the association information of the first set and the second set for inference.

[0133] - Information associated time domain. Optionally, the information associated time domain may include at least one of a periodicity, a time domain position (e.g., a time domain starting point and / or a time domain ending point), and a time period. Optionally, the information associated time domain is for the first set and / or for the second set. Optionally, the information associated time domain is for one or more precoding vectors associated with prediction and / or for one or more precoding vectors associated with measurement. Optionally, the information associated time domain may be the information associated time domain supported by the UE / preferred by the UE. By providing the information associated time domain to the base station, the UE may help the base station to use / configure time domain features associated with the first set / second set / precoding based on the information associated time domain, thus facilitating the UE to select the appropriate AI / ML model for inference accordingly.

[0134] - Cell information. Optionally, the cell information includes at least one of a physical cell identity (PCI) and a serving cell ID. By providing cell information to the base station, the UE may define the AI / ML model supported by the UE for the specific cell for the base station to configure / indicate in the corresponding cell, such that the UE may use the corresponding AI / ML model for inference.

[0135] By reporting the first reporting information, the base station and the UE have the same understanding of the combination of the beam that may be for prediction and the beam that may be for measurement, such that the base station may subsequently enable the beam prediction feature at the UE side, thus improving the efficiency of the communication system.

[0136] The UE receives (or is configured with) the CSI reporting configuration. Optionally, the CSI reporting configuration may be associated with / correspond to / include / configure the first set and / or the second set. Optionally, the first set is configured by the CSI reporting configuration. Optionally, the size of the first set is configured by the CSI reporting configuration. Optionally, the size of the first set and / or the size of the second set is determined based on the UE capability (or the first UE capability or the first reporting information). For example, the size with which the first set is configured and / or the size with which the second set is configured is based on one of one or more information reported by the first UE capability. Optionally, the precoding vectors associated with the first set and the precoding vectors associated with the second set are determined based on the UE capability (or the first UE capability or the first reporting information). For example, the precoding vectors associated with the first set and the precoding vectors associated with the second set are based on one of one or more information reported by the first reporting information.

[0137] - Optionally, the first set may be for prediction. For example, the first set may be for CSI prediction. For example, the first set may be for beam prediction. For example, the first set may be for spatial domain beam prediction and / or time domain beam prediction. For example, the first set may be used to predict CRI / SSBRI. For example, the first set may be used to predict an index associated with a precoding vector.

[0138] - Optionally, the first set may be a resource set. Optionally, the size of the first set is K1. Optionally, the resource set may include one or more reference signal resources. Optionally, the resource set may include K1 reference signal resources. Optionally, K1 > 1. Optionally, the reference signal resources may be SSB resources and / or CSI-RS resources. Optionally, the resource set may be resource set(s) indicated by a CSI resource configuration parameter (e.g., CSI-ResourceConfig). Optionally, the resource set may be indicated by a parameter (CSI-ResourceConfigId) in the CSI reporting configuration. Optionally, the resource set may include a CSI-RS resource set (for example, the resource set indicated by the parameterNZP-CSI-RS-ResourceSet). Optionally, the resource set may include an SSB resource set (for example, the resource set indicated by the parameterCSI-SSB-ResourceSet).

[0139] -- Optionally, the first set may be associated with precoding vectors. For example, the resource(s) included in the first set are associated with precoding vectors. For example, each of the one or more resources included in the first set is associated with an ID. For example, an ID is associated with a precoding vector. For example, an ID is used to represent a precoding vector. Optionally, the mapping relationship between the resources in the first set and the IDs of the precoding vectors is configured by the base station. For example, the IDs of the precoding vectors corresponding to the resources in the first set is configured by the base station. For example, the mapping relationship between the resources in the first set and the IDs of the precoding vectors is determined based on the information identifier configured by the base station (for example, the information identifier indicated by the first UE capability signaling). Optionally, for the same CSI reporting configuration, the UE is configured with the same information indicator. Optionally, for a CSI reporting configuration, the UE is configured with an information indicator, where the information indicator may be used to determine the precoding vectors corresponding to the first set and the precoding vectors corresponding to the second set. For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the i-th resource in the first set corresponds to the i-th precoding vector for prediction (in the information associated with the information indicator) based on the information indicator. Optionally, 1 ≤ i ≤ K1. For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the resource with the i-th smallest resource ID in the first set corresponds to the precoding vector with the i-th smallest ID for prediction (associated with the information indicator) based on the information indicator. Optionally, 1 ≤ i ≤ K1. The above provides an association method between the resources in the first set and the precoding vectors, such that the UE may use the AI model applicable for the precoding vector for beam prediction, thus improving the reliability of beam prediction.

[0140] -- Optionally, the UE may determine whether to perform measurement for the first set based on the base station indication or the UE capability. For example, the base station configures the measurement parameter for the first set. Optionally, the measurement parameter is used to indicate whether the UE measures the corresponding set (e.g., resource set). Optionally, the measurement parameter is used to indicate that the UE does not measure the corresponding set (e.g., resource set). For example, when the measurement parameter is configured (or configured to be disabled), the UE does not measure (or is not expected to measure) the first set. For example, when the measurement parameter is not configured (or when the measurement parameter is configured to be enabled), the UE measures (or is expected to measure) the first set. Optionally, measuring the first set refers to measuring the resources in the first set. Optionally, measuring the first set refers to performing measurement for the resources in the first set. Optionally, not measuring the first set refers to not measuring the resources in the first set. Optionally, not measuring the first set refers to not performing measurement for the resources in the first set. Optionally, when the UE does not support the measurement of the first set (for example, the UE capability signaling reported by the UE indicates that the UE does not support the measurement of the first set), no measurement is performed for the resources in the first set. Optionally, when the UE supports the measurement of the first set (for example, the UE capability signaling reported by the UE indicates that the UE supports the measurement of the first set), the measurement is performed for the resources in the first set. Optionally, when the UE supports the measurement of the first set (for example, UE capability signaling reported by the UE indicates that the UE supports the measurement of the first set) and the measurement parameter is not configured, the UE performs measurement for the resources in the first set. The above provides a method for the UE to determine whether the resources in the first set are measured or not, such that the UE does not measure the first set in some cases to save power consumption, or measures the first set in some cases for the UE to select the AI model according to the measurement result of the first set.

[0141] - Optionally, the first set may be an ID set. Optionally, the first set may be associated with precoding vectors. Optionally, the size of the first set is K1. For example, the first set includes the IDs of K1 precoding vectors. Optionally, K1 > 1. For example, the first set includes ID(s). For example, an ID is associated with a precoding vector. For example, an ID is used to represent a precoding vector. Optionally, the precoding vectors included in the first set (or the IDs of the precoding vectors included) are configured by the base station. For example, the precoding vectors included in the first set (or the IDs of the precoding vectors included) are determined based on the information identifier configured by the base station (for example, the information identifier indicated by the first UE capability signaling). For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the i-th precoding vector included in the first set corresponds to the i-th precoding vector for prediction (in the information associated with the information indicator) based on the information indicator. Optionally, 1 ≤ i ≤ K1. For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the precoding vector with the i-th smallest ID in the first set corresponds to the precoding vector with the i-th smallest ID for prediction (in the information associated with the information indicator) based on the information indicator. Optionally, 1 ≤ i ≤ K1. The above provides an association method between the first set and the precoding vectors, such that the UE may use the AI model applicable for the precoding vector for beam prediction, thus improving the reliability of beam prediction.

[0142] - Optionally, the first set includes / corresponds to / is associated with K1 integers. Optionally, K1 integers may be integers ranged from 0 to K1 - 1. Optionally, K1 integers may be integers ranged from 1 to K1. Optionally, the size of the first set is K1. Optionally, each of K1 integers corresponds to a predicted value (or a predicted ID or a predicted indicator). Optionally, the predicted value (or the predicted ID or the predicted indicator) is used for the UE to report the result of model inference. Optionally, the CSI report for Model inference at the UE side may include the predicted value (or the predicted ID or the predicted indicator). Optionally, the predicted value (or the predicted ID or the predicted indicator) is PVI. Optionally, the size of the first set is K1.

[0143] - Optionally, the second set may be a set for channel measurement. Optionally, the second set may be a resource set for channel measurement and / or interference measurement. Optionally, the second set may be a resource set for channel measurement and / or interference measurement. Optionally, the resource set may include one or more reference signal resources. For example, the size of the second set is K2. For example, the second set includes K2 resources. Optionally, K2 > 1. Optionally, the reference signal resources may be SSB resources and / or CSI-RS resources. Optionally, the resource set may be resource set(s) indicated by a CSI resource configuration parameter (e.g., CSI-ResourceConfig). Optionally, the resource set may be indicated by a parameter (CSI-ResourceConfigId) in the CSI reporting configuration. Optionally, the resource set may include a CSI-RS resource set (for example, the resource set indicated by the parameterNZP-CSI-RS-ResourceSet). Optionally, the resource set may include an SSB resource set (for example, the resource set indicated by the parameterCSI-SSB-ResourceSet).

[0144] -- Optionally, the second set may be associated with precoding vectors. For example, the resource(s) included in the second set are associated with precoding vectors. For example, each of the one or more resources included in the second set is associated with an ID. For example, an ID is associated with a precoding vector. For example, an ID is used to represent a precoding vector. Optionally, the mapping relationship between the resources in the second set and the IDs of the precoding vectors is configured by the base station. For example, the IDs of the precoding vectors corresponding to the resources in the second set is configured by the base station. For example, the mapping relationship between the resources in the second set and the IDs of the precoding vectors is determined based on the information identifier configured by the base station (for example, the information identifier indicated by the first UE capability signaling). Optionally, for the same CSI reporting configuration, the UE is configured with the same information indicator. Optionally, for a CSI reporting configuration, the UE is configured with an information indicator, where the information indicator may be used to determine the precoding vectors corresponding to the first set and the precoding vectors corresponding to the second set. For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the j-th resource in the second set corresponds to the j-th precoding vector for prediction (in the information associated with the information indicator) based on the information indicator. Optionally, 1 ≤ j ≤ K2. For example, the UE is configured (by the CSI reporting configuration) with an information indicator (for example, the information identifier in the first UE capability signaling), and the UE determines that the resource with the j-th smallest resource ID in the second set corresponds to the precoding vector with the j-th smallest ID for prediction (associated with the information indicator) based on the information indicator. Optionally, 1 ≤ j ≤ K2. Optionally, if the second set is divided into N_predicted groups, the "second set" in the mapping method of precoding vectors described above may be used interchangeably with "a group of N_predicted groups in the second set" or "each group of N_predicted groups in the second set" or "any group of N_predicted groups in the second set". Refer below for the method of dividing the second set into N_predicted groups. The above provides an association method between the resources in the second set and the precoding vectors, such that the UE may use the AI model applicable for the precoding vector for beam prediction, thus improving the reliability of beam prediction.

[0145] - Optionally, the UE may be configured with an information indicator. For example, the UE may be configured by the CSI reporting configuration with the information indicator (for example, the information indicator in the first UE capability).

[0146] - Optionally, the UE may be configured with a first indicator. For example, the UE may be configured with the first indicator through the CSI reporting configuration. Optionally, the first indicator may be an ID configured by the higher-layer signaling. Optionally, the first indicator may be / may include at least one of the consistency identifier, the data set identifier and the associated identifier. Optionally, the consistency identifier is for the first set and / or the second set. Optionally, the consistency identifier is used to determine / ensure the consistency of training and inference at the UE side. Optionally, the UE may perform Life cycle management (LCM) operation for the corresponding model based on the consistency identifier. Optionally, the data set identifier is used to indicate the data set. For example, the data set identifier indicates the data set for the first set and / or the second set. For example, the data set identifier indicates the data set for training for the first set and / or the second set. Optionally, the associated identifier is a mapping relationship / association relationship for indicating / representing / determining the association of the first set and the second set. Optionally, the first indicator may be used for training and / or inference (e.g., of the model). Optionally, the first indicator may be used for training and / or inference at the UE side. Optionally, the first indicator may be for model training and / or model inference at the UE side. Optionally, the UE determines the CSI (e.g., CRI / SSBRI / PVI) based on the first indicator (and / or the first set and / or the second set). Optionally, the UE determines the predicted CSI (e.g., the predicted CRI / SSBRI / PVI) based on the first indicator (and / or the first set and / or the second set). For beam prediction, the UE may have multiple models. The UE may determine the corresponding AI / ML model for inference based on the first indicator, thus ensuring the reliability of the model inference results and improving the performance of the communication system.

[0147] -- Optionally, the UE determines the size of the first set based on the first indicator. For example, the size of the first set is the size of the first set in the information associated with the first indicator in the (reported) first UE capability.

[0148] -- Optionally, the UE determines the size of the first set based on the information indicator. For example, the size of the first set is the size of the first set in the information associated with the information indicator in the (reported) first UE capability.

[0149] -- Optionally, if the UE receives a first indicator and the UE receives another first indicator and the two first indicators are the same (for example, the values of the two first indicators are the same), the UE uses the same model (for example, AI / ML model) for the two first indicators to perform at least one of the following operations: CSI prediction (for example, beam prediction), model inference, model detection and model training. Optionally, if a CSI reporting configuration received by the UE includes / is associated with the first indicator and another CSI reporting configuration received by the UE includes / is associated with another first indicator and the two first indicators are the same (for example, the values of the two first indicators are the same), the UE uses the same model (for example, AI / ML model) for the two CSI reporting configurations to perform at least one of the following operations: CSI prediction (for example, beam prediction), model inference, model detection and model training. The UE may have one or more models for model-related operations. This method may use first indicators to ensure that the UE uses the same model for the same first indicator when performing model-related operations, thus ensuring that the base station and the UE have the same understanding of the operation of the model and improving the reliability of the communication system.

[0150] - Optionally, for a CSI reporting configuration, the UE may be configured with spatial domain information. Optionally, the spatial domain information is associated with / corresponds to / applicable to the first set and the second set. Optionally, the spatial domain information is associated with / corresponds to / applicable to the precoding vectors associated with the first set and the precoding vectors associated with the second set. Optionally, for a CSI reporting configuration, the UE may be configured with an information identifier (for example, the information identifier included in the first UE capability signaling). Optionally, the spatial domain information in the information corresponding to the information identifier is associated with / corresponds to / applicable to the first set and the second set. Optionally, the spatial domain information is associated with / corresponds to / applicable to the precoding vectors associated with the first set and the precoding vectors associated with the second set. Optionally, the spatial domain information may include tilt angle information. Optionally, the tilt angle information may include a first dimension tilt angle and a second dimension tilt angle. For example, the first dimension tilt angle and the second dimension tilt angle based on the rectangular coordinate system. For example, the first dimension tilt angle and the second dimension tilt angle based on the polar coordinate system. Optionally, the spatial domain information may include / indicate the TCI state information. Optionally, the spatial domain information may include / indicate the TCI state information corresponding to each precoding vector. Optionally, the UE determines the CSI (for example, the CRI / SSBRI / PVI) based on the spatial domain information (and / or the first set and / or the second set). Optionally, the UE determines the predicted CSI (e.g., the predicted CRI / SSBRI / PVI) based on the spatial domain information (and / or the first set and / or the second set). The above provides an association method between the first set and / or the second set and the spatial domain information, such that the UE may use the AI model applicable for the spatial domain information for beam prediction, thus improving the reliability of beam prediction.

[0151] - Optionally, the UE may be configured with the information for determining the association of the first set and the second set. Optionally, the information for determining the association of the first set and the second set may be referred as the association information of the first set and the second set. Optionally, for a CSI reporting configuration, the UE may be configured with the association information of the first set and the second set. For example, the UE may be configured by the CSI reporting configuration with the association information of the first set and the second. Optionally, the association information of the first set and the second set may include the mapping relationship(s) between the elements of the first set and the elements of the second set. For example, for a mapping relationship, the association information indicates that the k1-th element (1 ≤ k1 ≤ K1) in the first set is associated with the k2-th element (1 ≤ k2 ≤ K2) in the second set, where K1 is the size of the first set and K2 is the size of the second set. For example, for a mapping relationship, the association information includes a parameter k1 and a parameter k2. The parameter k1 and the parameter k2 indicate that the k1-th element (1 ≤ k1 ≤ K1) in the first set is associated with the k2-th element (1 ≤ k2 ≤ K2) in the second set, where K1 is the size of the first set and K2 is the size of the second set. Optionally, an element in the first set being associated with an element in the second set may be an element in the first set being associated with an element in the second set in spatial domain (for example, an element in the first set is quasi-co-located or is type D quasi-co-located with an element in the second set). Optionally, an element in the first set being associated with an element in the second set may be an element in the first set and an element in the second set corresponding to the same beam (or corresponding to the same spatial domain filter). Optionally, the k1-th element in the first set refers to the k1-th resource in the first set (for example, the resource with the k1-th largest / smallest resource ID in the first set, or the resource corresponding to / associated with the k1-th entry in the configuration information associated with the first set). Optionally, the k1-th element in the first set refers to the k1-th precoding vector in the first set (for example, the precoding vector with the k1-th largest / smallest resource ID in the first set, or the precoding vector corresponding to / associated with the k1-th entry in the configuration information associated with the first set). Optionally, the k1-th element in the first set refers to the integer with the value of k1-1 in K1 integers. Optionally, the k1-th element in the first set refers to the predicted value (or the predicted ID or the predicted indicator) with the value of k1-1. Optionally, the k2-th element in the second set refers to the k2-th resource in the second set (for example, the resource with the k2-th largest / smallest resource ID in the second set, or the resource corresponding to / associated with the k2-th entry in the configuration information associated with the second set). The obtaining by the UE of the association information of the first set and the second set provided by the base station may enable the UE to use the AI / ML model for inference according to the association information of the first set and the second set, which improves the reliability of AI / ML model inference, thus improving the performance of the communication system.

[0152] The precoding vector is further described below. Optionally, the precoding vector may include angle information. Optionally, a precoding vector includes information indicating a first dimension angle and information indicating a second dimension angle. For example, the first dimension angle and the second dimension angle are angles based on two dimensions of the polar coordinate system. Optionally, the precoding vector may be vl,m, or the precoding vector may be determined based on vl,m. vl,mmay be determined by Equation (1).

[0153]

[0154] Here, N1represents the number of antenna ports in first dimension; N2represents the number of antenna ports in second dimension. Optionally, O1may be the factor associated with N1; O2may be the factor associated with N2. Optionally, O1may be the oversampling factor; O2may be the oversampling factor. Optionally, O1may be the oversampling factor associated with the antenna ports in first dimension; O2may be the oversampling factor associated with the antenna ports in second dimension. Optionally, the value of l may be 0,1,…,N1O1-1. Optionally, the value of m may be 0,1,…,N2O2-1.

[0155] Optionally, the ID of the precoding vector may be i1,1and i1,2where i1,1= l, i1,2= m. For example, the ID of a precoding vector corresponds to / includes a pair of i1,1and i1,2. Optionally, the value of l may be 0,1,…,N1O1-1. Optionally, the value of m may be 0,1,…,N2O2-1. For example, the ID of a precoding vector corresponds to two values, the value of i1,1and the value of i1,2, respectively. Optionally, the index of the precoding vector corresponds to / is associated with l and / or m. Optionally, the ID of a precoding vector corresponds to i1,1and / or i1,2, where i1,1= l, i1,2= m.

[0156] Optionally, the value of the ID of the precoding vector may be 0,1,…,N1O1N2O2-1, or 1,2,…,N1O1N2O2. Optionally, the value of l may be 0,1,…,N1O1-1. Optionally, the value of m may be 0,1,…,N2O2-1. Optionally, the mapping relationship between the index of the precoding vector and the precoding vector may be determined by at least one of the following methods:

[0157] - Method 1: the mapping relationship between the ID of the precoding vector and the precoding vector (for example, vl,m) is determined in a predefined manner. Optionally, the IDs of the precoding vectors are determined based on the order (for example, ascending / descending) of values ofland / or the order (for example, ascending / descending) of values ofm. Optionally, the ID of the precoding vectors is determined first based on the order (for example, ascending / descending) of values ofland then based on the order (for example, ascending / descending) of values ofm. For example, the value of the ID (e.g., k_pre) of the precoding vector is based on N1O1*m+l. For example, the value of the ID (e.g., k_pre) of the precoding vector is equal to N1O1*m+l. For example, the value of the ID (e.g., k_pre) of the precoding vector is equal to N1O1*m+l+1. Optionally, the ID (e.g., k_pre) of the precoding vector is determined first based on the order (for example, ascending / descending) of values ofmand then based on the order (for example, ascending / descending) of values ofl. For example, the value of the ID (e.g., k_pre) of the precoding vector is based on N2O2*l+m. For example, the value of the ID (e.g., k_pre) of the precoding vector is equal to N2O2*l+m. For example, the value of the ID (e.g., k_pre) of the precoding vector is equal to N2O2*l+m+1.

[0158] - Method 2: the mapping relationship between the ID of the precoding vector and the precoding vector (for example,vl,m) is indicated / configured by the base station. For example, the value ofland the value ofmcorresponding to the ID (e.g., k_pre) of the precoding vector are configured by the base station (e.g., indicated by at least one of radio resource control (RRC), media access control (MAC) and downlink control information (DCI) signaling). For example, the value ofland the value ofmcorresponding to the ID (e.g., k_pre) of the precoding vector are configured by the CSI reporting configuration.

[0159] Optionally, N1and / or N2may be indicated by the base station or predefined. Optionally, the value of N1may be one of 1, 2, 4, 8 and 16. Optionally, the value of N2may be one of 1, 2, 4, 8 and 16. Optionally, N1and / or N2are configured in set-level. For example, the first set may be configured with N1and / or N2. This N1and / or N2is applicable to (or may be used for) each resource / each precoding vector in the first set. For example, the second set may be configured with N1and / or N2. This N1and / or N2is applicable to (or may be used for) each resource / each precoding vector in the second set. Optionally, N1and / or N2may be configured in resource-level / in precoding vector-level. For example, each resource / precoding vector in the first set may be configured with N1and / or N2. For example, each resource / precoding vector in the second set may be configured with N1and / or N2.

[0160] Optionally, O1and / or O2may be indicated by the base station or predefined. Optionally, the value of O1may be one of 1, 2, 4, 8 and 16. Optionally, the value of O2may be one of 1, 2, 4, 8 and 16. Optionally, O1and / or O2are configured in set-level. For example, the first set may be configured with O1and / or O2. This O1and / or O2is applicable for (or may be used for) each resource / each precoding vector in the first set. For example, the second set may be configured with O1and / or O2. This O1and / or O2is applicable for (or may be used for) each resource / each precoding vector in the second set. Optionally, O1and / or O2may be configured in resource-level / in precoding vector-level. For example, each resource / precoding vector in the first set may be configured with O1and / or O2. For example, each resource / precoding vector in the second set may be configured with O1and / or O2.

[0161] Optionally, O1and O2are determined based on N1and N2. For example, O1and O2are determined based on N1and N2through the correspondence in Table 1 below. For example, when N1and N2are 6 and 2, O1and O2are 4 and 4.

[0162]

[0163] The above provides the method for determining and indicating the precoding vector and the parameters associated with the precoding vector. The method may facilitate the UE and the base station to have the same understanding of the precoding vector, such that the UE may perform beam prediction based on the precoding vector indicated by the base station, thus improving the reliability of beam prediction.

[0164] The configuration restrictions of the first set and / or the second set are discussed below.

[0165] - Optionally, if the first set includes CSI-RS resources, the total number of resources included in the first set is less than or equal to 64, or less than or equal to A, where A is based on the UE capability. Optionally, if the first set includes CSI-RS resources, the first set is a periodic CSI-RS resource set. Optionally, the first set may be configured with a repetition parameter (e.g., repetition) and not configured with a TRS information parameter (e.g., trs-Info). Optionally, if the first set includes CSI-RS resources, the first set is configured with the repetition parameter (e.g., repetition) and is not configured with the TRS information parameter (e.g., trs-Info). Optionally, the numbers of ports of the CSI-RS resources in the first set are the same (for example, the numbers are all 1s or the numbers are all 2s). Optionally, if the first set is configured with the repetition parameter (e.g., repetition) and is not configured with the TRS information parameter (e.g., trs-Info), and / or if the first set includes CSI-RS resources, the numbers of ports of resources in the first set are the same (e.g., the numbers are all 1s or the numbers are all 2s). Optionally, the number of ports of the CSI-RS resources is indicated by a port number parameter (e.g., nrofPorts). Optionally, when the UE is configured to measure the first set, the first set has the above configuration restrictions. Optionally, the term "the first set includes CSI-RS resources" may be used interchangeably with the terms "the first set includes one or more CSI-RS resources" or "the first set is a CSI-RS resource set". The above configuration restrictions for the first set may facilitate the UE to compare the measurement results of resources associated with the first set.

[0166] - Optionally, if the second set includes CSI-RS resources, the total number of resources included in the second set is 64 or less. Optionally, the second set may be configured with the repetition parameter (e.g., repetition) and is not configured with the TRS information parameter (e.g., trs-Info). Optionally, if the second set includes CSI-RS resources, the second set is configured with the repetition parameter (e.g., repetition) and is not configured with the TRS information parameter (e.g., trs-Info). Optionally, the numbers of ports of the CSI-RS resources in the second set are the same (for example, the numbers are all 1s or the numbers are all 2s). Optionally, if the second set is configured with the repetition parameter (e.g., repetition) and is not configured with the TRS information parameter (e.g., trs-Info), and / or if the second set includes CSI-RS resources, the numbers of ports of resources in the second set are the same (e.g., the numbers are all 1s or the numbers are all 2s). Optionally, the number of ports of the CSI-RS resources is indicated by a port number parameter (e.g., nrofPorts). Optionally, the term "the second set includes CSI-RS resources" may be used interchangeably with the terms "the second set includes one or more CSI-RS resources" or "the second set is a CSI-RS resource set". The above configuration restrictions for the second set may facilitate the UE to compare the spatial domain information and / or measurement information of the resources associated with the second set.

[0167] Optionally, the second set may be grouped. Optionally, the resources in the second set (for example, SSB resources or CSI-RS resources) may be grouped. Optionally, the resources in the second set may be divided into N_predicted groups. Optionally, N_predicted > 1. Optionally, the resources in the second set (for example, SSB resources or CSI-RS resources) may be grouped. Optionally, when the second set is an aperiodic CSI-RS resource set, the second set may be divided into N_predicted groups. Optionally, when the second set is an aperiodic CSI-RS resource set and the CSI reporting configuration is associated with the predicted CSI, the second set may be divided into N_predicted groups. Optionally, N_predicted may be indicated by the base station or predefined or determined based on the UE capability. For example, N_predicted may be configured by the CSI reporting configuration.

[0168] - Optionally, the CSI reporting configuration may be associated with / configure N_predicted resource sets for channel measurement. For example, the second set includes the resources in N_predicted resource sets for channel measurement. Optionally, when the CSI reporting configuration is associated with the predicted CSI and / or the resource set is an aperiodic CSI-RS resource set, the CSI reporting configuration is associated with N_predicted resource sets for channel measurement. Optionally, each of the N_predicted resource sets may correspond to a group. Optionally, the CSI reporting configuration being associated with N_predicted resource sets for channel measurement refers to the CSI reporting configuration being associated with N_predicted groups. Optionally, the N_predicted resource sets are configured by the base station (for example, by the CSI reporting configuration).

[0169] - Optionally, the CSI reporting configuration may be associated with / configure K_predicted resource sets for channel measurement. For example, the second set includes the resources in K_predicted resource sets for channel measurement. Optionally, when the CSI reporting configuration is associated with the predicted CSI and / or the resource set is an aperiodic CSI-RS resource set, the CSI reporting configuration is associated with K_predicted resource sets for channel measurement. Optionally, the resources in K_predicted resource sets may be mapped into N_predicted groups. Optionally, each of the N_predicted groups includes the same number of resources (e.g., K_predicted resources). Optionally, the K_predicted resource sets are configured by the base station (for example, by the CSI reporting configuration). Optionally, K_predicted > 1.

[0170] - Optionally, the CSI reporting configuration may be associated with / configure a resource set for channel measurement, and (all) resources in the resource set may be grouped. Optionally, when the CSI reporting configuration is associated with the predicted CSI and / or the resource set is an aperiodic CSI-RS resource set, (all) resources in the resource set may be grouped. For example, resources in the resource set may be divided into N_predicted groups, where each group includes the same number of resources (e.g., K_predicted resources). Optionally, N_predicted and / or K_predicted may be indicated by the base station (for example, configured by the CSI reporting configuration, or indicated explicitly / implicitly by the parameter in the CSI reporting configuration), or predefined, or determined by the UE based on the indication / configuration of the base station. Optionally, N_predicted and / or K_predicted may be determined based on the method for determining the resources of the N_predicted group. Refer below for the method for determining the resources of the N_predicted group.

[0171] - Optionally, N_predicted > 1. Optionally, N_predicted may be one of 2, 3, 4, 5 and 6. Optionally, N_predicted may be one of 4, 8 and 12. Optionally, K_predicted > 1. Optionally, K_predicted may be one of 2, 4, 8 and 16. Optionally, K_predicted may be one of 2, 4 and 8. Optionally, the resources in any two of the N_predicted groups are (completely) different. Optionally, the resources in any two of the N_predicted groups have no intersection. Optionally, N_predicted*K_predicted is less than or equal to a predefined value (for example, 4, 8, 16, 32, 64 or 128). Optionally, N_predicted*K_predicted (or K) is less than or equal to the value indicated by the UE capability (e.g., the UE capability signaling). Optionally, the UE capability signaling indicates that the UE supports time domain beam prediction, or the UE supports time domain beam prediction and spatial domain beam prediction.

[0172] - The CSI reporting configuration being associated with the predicted CSI may be / may include at least one of the followings: the CSI reporting configuration being associated with / including / configuring the parameter for indicating time domain information, the CSI reporting configuration being associated with the predicted CRI / SSBRI, and the CSI reporting configuration being associated with the precoding indicator (for example, PVI). When the CSI reporting configuration is associated with the predicted CSI, the report quantity parameter (for example, reportQuantity) included in / associated with the CSI reporting configuration is set to 'cri-RSRP or 'ssb-Index-RSRP' or 'cri-RSRP- Index' or 'ssb-Index-RSRP-Index'. Optionally, the time domain information may be used to configure / indicate the time unit or time instance associated with the (predicted) CRI / SSBRI reported by the UE. Optionally, the time domain information may be used to configure / indicate the time unit or time instance associated with the predicted index reported by the UE. Optionally, the time domain information is used to configure F (F ≥ 1) time instances. Optionally, the time domain information may be used to configure F (F ≥ 1) time instances associated with the predicted CSI. Optionally, refer below for description of the precoding indicator (PVI).

[0173] Optionally, if the CSI reporting configuration is associated with N_predicted resource sets for channel measurement, each set corresponds to a group, respectively. Optionally, the CSI reporting configuration is associated with N_predicted resource sets for channel measurement, and each set corresponds to a group, respectively. One of the N_predicted groups is represented as group #x, where x = 0, 1, 2, …, N_predicted-1. Optionally, group #x includes (all) resources of resource set #x (of N_predicted resource sets). Optionally, resource set #x represents the x+1-th resource set (for channel measurement) configured by the CSI reporting configuration. For example, resource set #0 represents the first resource set (for channel measurement) configured by the CSI reporting configuration. Optionally, the number / order of the resource sets is determined based on the IDs of the resource sets. Optionally, the resource set #x represents the resource set with the x+1-th smallest ID. For example, resource set #0 represents the resource set with the smallest ID. Optionally, the resource set ID may be configured by NZP-CSI-RS-ResourceSetId.

[0174] Optionally, if the CSI reporting configuration is associated with K_predicted resource sets for channel measurement, each resource of one / each resource set corresponds to one of N_predicted groups, respectively. Optionally, the resources in K_predicted resource sets are mapped into N_predicted groups. One of the N_predicted groups is represented as group #x, where x = 0, 1, 2, …, N_predicted-1. Optionally, if the CSI reporting configuration is associated with K_predicted resource sets for channel measurement, the x+1-th resource of each set belongs to group #x. For example, group #0 includes the first resource in each resource set (of K_predicted resource sets). Optionally, the x+1-th resource in the resource set refers to the x+1-th resource configuration information (for example, nzp-CSI-RS-Resources set) in the configuration information corresponding to the resource set. Optionally, the x+1-th resource in the resource set refers to the resource with the x+1-th smallest ID in the resource set. Optionally, the x+1-th resource in the resource set refers to the resource with the x+1-th largest ID in the resource set. Optionally, the resource ID may be configured by NZP-CSI-RS-ResourceId.

[0175] Optionally, the grouping method of the second set (or the grouping method of resources in a resource set for channel measurement, or the determination method of resources in N_predicted groups, or the mapping relationship between resources in N_predicted groups and K resource sets) may be at least one of the following methods. One of the N_predicted groups is represented as group #x, where x = 0, 1, 2, …, N_predicted-1.

[0176] - Method 1: the resources in N_predicted groups are determined based on resource IDs. Optionally, the resource ID may be a CSI-RS resource ID. For example, the resource ID may be configured by NZP-CSI-RS-ResourceId. Optionally, the resources in the N_predicted groups are determined based on the order (for example, ascending / descending) of the resource IDs. For example, (taking ascending as an example) group #x corresponds to / includes the resource with the K_predicted*x+1-th smallest resource ID to the resource with the K_predicted*x+K_predicted-th smallest resource in the resource set. For example, group #0 corresponds to / includes K_predicted resources with the smallest resource ID in the resource set. Optionally, the y-th resource corresponding to / included in group #x is the resource with the y-th smallest resource ID (in group #x). Optionally, y = 1, 2, …, K_predicted.

[0177] - Method 2: the resources in N_predicted groups are determined based on the configuration information of the resources in the resource set. Optionally, the resources in the N_predicted groups are determined based on the order of the configuration information (for example, nzp-CSI-RS-Resources) of the resources in the resource set configuration information (for example, NZP-CSI-RS-resources set). Optionally, the x-th entry of resource in the resource set refers to the resource corresponding to the configuration information of the x-th entry of resource in the resource set. Optionally, the resources in the N_predicted groups are determined based on the order (for example, ascending / descending) of the configuration information of the resources. For example, (taking ascending as an example) group #x corresponds to / includes the K_predicted*x+1-th (entry of) resource to the the K_predicted*x+K_predicted-th (entry of) resource in the resource set. For example, (taking ascending as an example) group #0 corresponds to / includes the first K_predicted resources in the resource set. Optionally, the y-th resource corresponding to / included in group #x is the resource with the y-th smallest entry ID (in group #x). Optionally, y = 1, 2, …, K_predicted.

[0178] - Method 3: the resources in N_predicted groups are determined based on the indication of the base station. Optionally, the resources included in each of the N_predicted groups are indicated by the base station. For example, the CSI-RS resource ID(s) corresponding to / associated with the resource(s) included in each of the N_predicted groups is indicated by the base station. Optionally, the CSI-RS resource ID may be the relative ID of the resource in the resource set. For example, the relative ID refers to / corresponds to k_rel (for example, k_rel ≥ 0), and k_rel represents the k_rel+1-th resource in the resource set. Optionally, the CSI-RS resource ID may be NZP-CSI-RS-ResourceId. For example, the value of CSI-RS resource ID is equal to NZP-CSI-RS-ResourceID corresponding to the CSI-RS resource / with which the CSI-RS resource is configured.

[0179] Optionally, the UE determines and / or reports the CSI based on N_predicted groups. Optionally, the UE determines and / or reports the CSI based on resources in N_predicted groups. Optionally, the UE determines and / or reports the CSI based on the measurement of resources in N_predicted groups.

[0180] The grouping method for the second set (for example, resources for channel measurement) is described above, which facilitates the base station to configure channel measurement of a plurality of resources at one or more time points in the past, thus improving the accuracy of CSI prediction and further improving the reliability of the communication system.

[0181] The features of resources in N_predicted groups are discussed below. Optionally, the slots / symbols where (all) resources in a group / each group of the N_predicted groups are located are the same. Optionally, if the resource set (for example, the second set) is configured with N_predicted groups, the slots / symbols where (all) resources in a group / each group are located are the same. Optionally, the symbols where resources in a group / each group of the N_predicted groups are located being the same refers to (each of) the resources in a group / each group of the N_predicted groups being in the same slot, and the starting symbol / first symbol / ending symbol of (each of) these resources are in the same symbols (for example, parameters firstOFDMSymbolInTimeDomain are the same and / or parameters firstOFDMSymbolInTimeDomaiN2are the same). Optionally, the symbols where resources in a group / each group of the N_predicted groups are located being the same refers to the resources in a group / each group of the N_predicted groups are in the same slot, and the symbols occupied by these resources are partially or completely the same. This restriction may ensure that the reference signal resources in the same group (for example, a plurality of reference signal resources corresponding to the same measurement occasion) are in the same time domain positions, improving the time domain correlation between the reference signals in each of a plurality of measurement occasions and improving the accuracy of time domain beam prediction. Optionally, (for aperiodic CSI resource set for channel measurement), resources in N_predicted groups in the resource set (for example, resources in a group or all groups in N_predicted groups) may be triggered at the same triggering instance (or resources in N_predicted groups are triggered at the same time). Optionally, the interval between the resources of two groups (for example, two neighboring groups or two consecutive groups or two consecutive groups in time domain) is m slots. Optionally, the interval between the earliest / latest resources of two groups (for example, two neighboring groups or two consecutive groups or two consecutive groups in time domain) is m slots. Optionally, m may be one of 1 and 2. Optionally, m may be one of 1, 2 and 4. Optionally, m may be one of 1, 2, 3 and 4. Optionally, m is configured by the base station, or m is predefined. Optionally, the resources in N_predicted groups are transmitted according to / based on the order of the groups (for example, the order of the group IDs). Here, the group ID may be x (for example, x defined above). For example, the reference signal of group #x (or the earliest reference signal in group #x) is transmitted in slot n+X_offset+x*m. Here, n represents the slot where the DCI triggering the reference signal is located.

[0182] - Optionally, when aperiodic CSI-RS is used with aperiodic reporting, the (one / each) resource set may be configured by higher-layer parameters (for example, aperiodicTriggeringOffset, aperiodicTriggeringOffset-r16 or aperiodicTriggeringOffset-r17) with the CSI-RS (or CSI-RS resource) offset. For example, when the triggered DCI is in slot n, the triggered (earliest) CSI-RS is transmitted in slot n+X_offset, where X_offset refers to thr CSI-RS offset. For example, X_offset is based on / equal to the CSI-RS offset configured by the higher-layer parameters (e.g., aperiodicTriggeringOffset, aperiodicTriggeringOffset-r16 or aperiodicTriggeringOffset-r17).

[0183] Optionally, for resources in a group or in each group of N_predicted groups (e.g., K_predicted resources):

[0184] - Optionally, K_predicted resources are in the same slot.

[0185] - Optionally, the slot / symbol offsets of the K_predicted resources are configured within X slots / symbol. Optionally, X may be predefined or determined based on the UE capability. For example, X is indicated by the reported UE capability parameter. X may be one of 1, 2, 3 and 4.

[0186] - Optionally, K_predicted resources are (configured) in X neighboring / consecutive slots. Optionally, X may be predefined or determined based on the UE capability. For example, X is indicated by the reported UE capability parameter. X may be one of 1, 2, 3 and 4. Optionally, X >1.

[0187] - Optionally, K_predicted resources are (configured) in the same slots or in neighboring slots.

[0188] - Optionally, K_predicted resources are in the same symbols. Optionally, K_predicted resources occupy the same symbols, for example, the starting symbol / first symbol / ending symbol of (each of) K_predicted resources are in the same symbols. For example, the parameters firstOFDMSymbolInTimeDomain of (each of) K_predicted resources are the same and / or the parameters firstOFDMSymbolInTimeDomaiN2are the same. Optionally, the symbols occupied by (each of) the resources in a group / each group of N_predicted groups are the same or completely the same.

[0189] - Optionally, there is no DL / UL switching in between the two resources of K_predicted resources.

[0190] - Optionally, the bandwidths and / or subcarriers corresponding to / associated with / occupied by K_predicted resources are the same.

[0191] - Optionally, the physical resource blocks (PRBs) corresponding to / associated with / occupied by K_predicted resources are the same or adjacent.

[0192] - Optionally, the energy per resource element (EPRE) corresponding to / associated with / occupied by K_predicted resources is the same.

[0193] Adding the above restrictions to K_predicted resources may ensure the phase continuity between the measurement of K_predicted resources, improve the accuracy of CSI, and further improve the reliability of the communication system.

[0194] Optionally, the UE assumes / determines that antenna port with the same port index of the y-th resource in each of the N_predicted groups is the same. Optionally, y = 1, 2, …, K_predicted. Optionally, the UE performs measurement and / or CSI computation based on the assumption that that antenna port with the same port index of the y-th resource in each of the N_predicted groups is the same. Optionally, the UE assumes / determines that the antenna port with the same port index (for CSI computation) of the y-th resource of each of the N_predicted groups is the same. Optionally, the UE performs measurement and / or CSI computation based on the assumption that the antenna port with the same port index (for CSI computation) of the y-th resource in each of N_predicted groups is the same. Optionally, the CSI computation may be CSI prediction. Optionally, the CSI computation is, for example, the computation of CRI and / or SSBRI and / or precoder index. For example, the UE assumes that the antenna port of the first CSI-RS in group #0 with the number of 3000 is the same as the antenna port of the first CSI-RS in group #1 with the number of 3000. Assuming that the ports of multiple reference signals are one antenna port, which may facilitate the UE to jointly estimate the channel of these antenna ports (at different slots), so as to perform time domain prediction of the CSI, improving the performance of CSI feedback.

[0195] Optionally, the y-th resource of each of the N_predicted groups has (or is configured or indicated with) the same QCL parameter. Optionally, the UE assumes / determines that the y-th resource of each of the N_predicted groups has (or is configured or indicated with) the same QCL parameter. Optionally, the QCL parameter may be a QCL type A parameter and / or a QCL type D parameter. Optionally, y = 1, 2, …, K_predicted. Optionally, the UE performs measurement and / or CSI computation based on the assumption that the y-th resource of each of the N_predicted groups has (or is configured or indicated with) the same QCL parameter. Optionally, the CSI computation may be CSI prediction. Optionally, the CSI computation may be beam prediction. Optionally, the CSI computation is, for example, the computation of CRI and / or SSBRI and / or precoder index. For example, the QCL parameter of the first CSI-RS in group #0 is the same as that of the first CSI-RS in group #1. For example, the UE assumes that the QCL parameter of the first CSI-RS in group #0 is the same as that of the first CSI-RS in group #1. The QCL parameters of multiple reference signals are the same (or the QCLs of multiple reference signals are assumed to be the same), which may facilitate the UE to jointly measure these reference signals (in different slots), so as to perform time domain prediction of the CSI, improving the performance of CSI feedback.

[0196] The UE determines and / or reports the CSI based on the CSI reporting configuration. Optionally, the UE determines and / or reports the CSI based on the second set. Optionally, for the UE side model (or for UE side model inference), the UE determines and / or reports the CSI based on the second set. Optionally, the UE determines and / or reports the CSI based on the second set and / or the first indicator. Optionally, the UE determines and / or reports the CSI associated with the first set based on the second set. Optionally, the CSI may include at least one of SSBRI, CRI, PVI, L1-RSRP and CapabilityIndex. Optionally, based on the second set may be at least one of based on resources in the second set (for example, based on the order of resources in the second set) and based on channel measurement of the second set (for example, based on channel measurement of resources in the second set). Optionally, the order of the resources in the second set may be at least one of the followings:

[0197] - The order (for example, ascending / descending) of the resource IDs in the second set. Optionally, the resource ID may be a CSI-RS ID. Optionally, the resource ID may be a CSI-RS resource ID. Optionally, the resource ID may be indicated by NZP-CSI-RS-ResourceId. Optionally, the resource ID may be an SSB ID. Optionally, the resource ID may be an SSB resource ID. Optionally, the resource ID may be indicated by SSB-Index. For example, the second set includes CSI-RS resource #1, CSI-RS resource #3 and CSI-RS resource #2, and the ascending order based on CSI-RS resource IDs refers to CSI-RS resource #1→CSI-RS resource #2→CSI-RS resource #3.

[0198] - The order (e.g., ascending / descending) of the positions of the resources in the configuration information of the second set. The order (for example, ascending / descending) of the positions of the resource information in the configuration information of the second set. Optionally, when the second set is a CSI-RS resource set, the configuration information of the second set is, for example, NZP-CSI-RS-ResourceSet. Optionally, when the second set is a CSI-RS resource set, the resource information is (configured) NZP-CSI-RS-Resources, for example. Optionally, when the second set is an SSB resource set, the configuration information of the second set is CSI-SSB-ResourceSet, for example. Optionally, when the second set is an SSB resource set, the resource information is, for example, a (configured) SSB ID (for example, SSB-Index). For example, in the configuration information of the second set, the first entry of CSI-RS resource information is CSI-RS resource #1; the second entry of CSI-RS resource information is CSI-RS resource #3; the third entry of CSI-RS resource information is CSI-RS resource #2, the ascending order of the positions of the resources (or resource information) in the configuration information of the second set refers to CSI-RS resource #1→CSI-RS resource #3→CSI-RS resource #2.

[0199] - The order (e.g., ascending / descending) of the precoding vectors associated with the resources in the second set. Optionally, the order of the precoding vectors associated with the resources in the corresponding configuration information. Optionally, the ID order of the precoding vectors associated with the resources. Optionally, refer above for the method of associating the resources in the second set with the precoding vectors. For example, the second set includes CSI-RS resource #1, CSI-RS resource #3, and CSI-RS resource #2, and CSI-RS resource #1 is associated with precoding vector #1, CSI-RS resource #2 is associated with precoding vector #2, CSI-RS resource #3 is associated with precoding vector #3. For example, the ascending order based on precoding vector IDs (associated with the resources) refers to precoding vector #1→precoding vector #2→precoding vector #3. For example, the ascending order based on precoding vector IDs (associated with resources) refers to CSI-RS resource #1→CSI-RS resource #2→CSI-RS resource #3.

[0200] - The order (for example, ascending / descending) of the positions of the resources in the second set in the configuration information of the first set. Optionally, the first set includes the resources in the second set (includes all resources in the second set). Optionally, the order (e.g., ascending / descending) of the positions of the resources in the second set in the configuration information of the first set. Optionally, when the first set is a CSI-RS resource set, the configuration information of the first set is, for example, NZP-CSI-RS-ResourceSet. Optionally, when the first set / second set is a CSI-RS resource set, the resource information is (configured) NZP-CSI-RS-Resources, for example. Optionally, when the first set / second set is an SSB resource set, the configuration information of the first set / second set is, for example, CSI-SSB-ResourceSet. Optionally, when the first set / second set is an SSB resource set, the resource information is, for example, a (configured) SSB ID (for example, SSB-Index). For example, the second set includes CSI-RS resource #2 and CSI-RS resource #3, and in the configuration information of the first set: the first entry of CSI-RS resource information is CSI-RS resource #1; the second entry of CSI-RS resource information is CSI-RS resource #3; the third entry of CSI-RS resource information is CSI-RS resource #2, the ascending order of the positions of the resources (or resource information) in the second set in the configuration information of the first set refers to CSI-RS resource #3→CSI-RS resource #2.

[0201] The resources in the second set are used for measurement, and the corresponding measurement results will be used as the input of the AI / ML model. The UE obtains the output of the corresponding AI / ML model through the input of the AI / ML model so as to determine and / or report the corresponding predicted CSI. For the input of the AI / ML model, the order of the measurement results of each resource in the second set as the AI / ML input will affect the corresponding output results. Therefore, the above method specifies in which order the UE uses the measurement results for the resources in the second set, thus ensuring the reliability of the model output results and further ensuring the reliability of the communication system.

[0202] Optionally, the UE may determine and / or report the CSI based on the association information of the first set and the second set. Optionally, for the UE side model (or for UE side model inference), the UE determines and / or reports the CSI based on the association information of the first set and the second set. Optionally, the UE determines and / or reports the CSI based on the association information of the first set and the second set and / or the first indicator. Optionally, the UE determines and / or reports the CSI associated with the first set based on the association information of the first set and the second set. Optionally, the CSI may include at least one of SSBRI, CRI, PVI, L1-RSRP and CapabilityIndex. The obtaining by the UE of the association information of the first set and the second set provided by the base station can enable the UE to use the AI / ML model for inference according to the association information of the first set and the second set, and generate the corresponding CSI based on the inference result, thus improving the reliability of the reported CSI and the performance of the communication system.

[0203] Optionally, an element in the first set and / or the second set is associated with / corresponds to an ID of a precoding vector and / or a first indicator. Optionally, the value of the ID of the precoding vector associated with a resource or a PVI is the same as the value of the ID of the precoding vector associated with / corresponding to the element, and / or the value of the first indicator associated with / corresponding to the element is the same as the value of the first indicator associated with the resource or PVI. Optionally, (in this case) the downlink spatial domain transmission filter associated with / corresponding to the element is the same as the downlink spatial domain transmission filter associated with / corresponding to the resource or PVI. Optionally, (in this case) for CSI determination, or for model inference at the UE side, the UE assumes that the downlink spatial domain transmission filter associated with / corresponding to the element is the same as the downlink spatial domain transmission filter associated with / corresponding to the resource or PVI to perform CSI determination or model inference. Optionally, (in this case) for CSI determination, or for model inference at the UE side, the UE performs CSI determination or model inference based on the assumption that the downlink spatial domain transmission filter associated with / corresponding to the element is the same as the downlink spatial domain transmission filter associated with / corresponding to the resource or PVI. Optionally, a resource or a PVI may be a resource or a PVI for AI / ML model training. Optionally, a resource or a PVI may be a resource or PVI for AI / ML model inference.

[0204] Optionally, the UE may report N (different) CRIs / SSBRIs / PVIs. Optionally, the UE may report N (different) predicted CRIs / SSBRIs / PVIs. Optionally, the PVI may represent / correspond to the ID in the first set (for example, the ID of the precoding vector). Optionally, the PVI may represent a predicted value. Optionally, the PVI may represent a value corresponding to the predicted beam. Optionally, the PVI may represent the value of the predicted beam index. Optionally, the PVI is based on the size of the first set (e.g., K1). For example, the value of PVI may be an integer ranged from 0 to K1-1. For example, the value of PVI may be an integer ranged from 1 to K1. Optionally, the UE may report N different predicted CRIs / SSBRIs / PVIs in a report occasion. Optionally, N may be predefined or indicated / configured by the base station (for example, configured by the CSI reporting configuration, or configured by parameter nrofReportedRS included in the CSI reporting configuration). Optionally, N may be one of 1, 2, 4, 8, 16, 32 and 64. Optionally, N may be any integer ranged from 1 to 64.

[0205] - Optionally, the (predicted) CRIs / SSBRIs are determined based on the resources in the first set. Optionally, CRI / SSBRI k (k ≥ 0) corresponds to the k+1-th resource in the first set. Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the configuration information of the first set (or the location of the resource configuration information in the configuration information of the first set). For example, CRI / SSBRI k (k ≥ 0) corresponds to the configured (k+1)-th entry of the associated resource configuration information (e.g., nzp-CSI-RS-Resources). Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the resource IDs in the first set. Optionally, the resource ID may be a CSI-RS ID. Optionally, the resource ID may be indicated by NZP-CSI-RS-ResourceId. Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the order (for example, ascending / descending) of the resource IDa in the first set. For example, CRI / SSBRI k (k ≥ 0) corresponds to the resource with the k+1-th smallest resource ID in the first set.

[0206] - Optionally, the (predicted) PVIs are determined based on the precoding vectors (or the IDs of the precoding vectors) in the first set. Optionally, the PVI k corresponds to the k+1-th precoding vector (or the ID of the precoding vector) in the first set. Optionally, the PVI may be a value of PVI. Optionally, the PVI is determined based on the configuration information of the first set (or the position of the index / ID in the configuration information of the first set). For example, the UE is configured with the first set via RRC signaling (e.g., index list / ID list). PVI k (k ≥ 0) corresponds to the ID of the precoding vector associated with the k+1-th entry in the configuration information (for example, index list / ID list) of the first set. Optionally, the index / ID corresponding to the PVI may be determined based on the index / ID in the first set. Optionally, the index / ID corresponding to the PVI may be determined based on the order (e.g., ascending / descending order) of the values of the indexes / IDs (e.g., the IDs of the precoding vectors) in the first set. For example, PVI k (k ≥ 0) corresponds to the resource with the k+1-th smallest index / ID (e.g., the ID of the precoding vector) in the first set.

[0207] - Optionally, the (predicted) PVIs are associated with the size of the first set (e.g., K1). For example, the value of PVI is an integer ranged from 0 to K1-1. For example, the value of PVI is an integer ranged from 1 to K1. Restriction on the value of PVI may define how to report PVI, such that the UE and the base station have the same understanding of the PVI, ensuring the reliability of the communication system.

[0208] - Optionally, if the second set is configured and the first set is not configured, or if only the second set is configured, the (predicted) CRIs / SSBRIs are determined based on the resources in the second set. Optionally, CRI / SSBRI k (k ≥ 0) corresponds to the k+1-th resource in the second set. Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the configuration information of the second set (or the location of the resource configuration information in the configuration information of the second set). For example, CRI / SSBRI k (k ≥ 0) corresponds to the resource configuration information (for example, nzp-CSI-RS-Resources set) associated with the k+1-th entry in the configuration information of the second set. Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the resource IDs in the second set. Optionally, the resource ID may be a CSI-RS ID. Optionally, the resource ID may be indicated by NZP-CSI-RS-ResourceId. Optionally, the resources corresponding to CRIs / SSBRIs are determined based on the order (for example, ascending / descending) of the resource IDa in the second set. For example, CRI / SSBRI k (k ≥ 0) corresponds to the resource with the k+1-th smallest resource ID in the second set.

[0209] - Optionally, when the second set is divided into N_predicted groups and / or the first set is not configured, the (predicted) CRIs / SSBRIs are determined based on the resources in the N_predicted groups. Optionally, CRI / SSBRI k (k ≥ 0) corresponds to the k+1-th resource of one of N_predicted groups (for example, the first group or the last group). Optionally, CRI / SSBRI k (k ≥ 0) corresponds to the k+1-th resource of each of the N_predicted groups. Optionally, y = k+1.

[0210] Optionally, the UE may report CRI / SSBRI / PVI for F (F ≥ 1) time instances. Optionally, when the CSI reporting configuration includes / is associated with the time domain information, the UE may report CRI / SSBRI / PVI for F (F ≥ 1) time instances. Optionally, the UE may report CRI / SSBRI / PVI for F (F ≥ 1) time instances in a report instance. Optionally, when the CSI reporting configuration includes / is associated with the time domain information, the UE may report CRI / SSBRI / PVI for F (F ≥ 1) time instances in a report instance. Optionally, each of the F (F ≥ 1) time instances may correspond to / be associated with N CRIs / SSBRIs / PVIs. Refer above for the description of N CRIs / SSBRIs / PVIs. Optionally, the time instance may be a time point or a time period. Optionally, the time period may be one or more time units. The time unit may be one of a symbol, a slot, a sub-slot, a sub-frame, a millisecond and a second. Optionally, the time point may be the beginning of a time unit or the ending of a time unit. Optionally, the F time instances may be determined based on the time domain information. Optionally, the CSI reporting configuration is associated with / includes / configures the parameter for indicating the time domain information. Optionally, the time domain information is used for time domain prediction (e.g., time domain beam prediction or time domain downlink beam prediction). Optionally, the F time instances are determined based on (or with reference to) the time domain position associated with the report carrying the (corresponding) CSI. Optionally, the time domain location associated with the report of the CSI may be the time unit where the CSI report is located. Optionally, the time domain location associated with the report of the CSI may be the time unit where the CSI reference resource corresponding to the CSI report is located. Configuring the time domain information may make the base station and the UE have the same understanding of the information included in the reported CSI on which time instances for which beam prediction are performed, thus ensuring the reliability of time domain beam prediction.

[0211] The report of L1-RSRP is discussed below. Optionally, whether L1-RSRP is included in the CSI (or whether L1-RSRP is reported) may be determined based on the indication of the base station (for example, based on the CSI reporting configuration, or based on the report quantity parameter reportQuantity included in the CSI reporting configuration, or based on the enable parameter included in the CSI reporting configuration).

[0212] ● Optionally, the UE may report the L1-RSRPs (for example, the predicted L1-RSRPs) associated with / corresponding to the CRIs / SSBRIs / PVIs. Optionally, the UE may report the L1-RSRPs (for example, the predicted L1-RSRPs) associated with / corresponding to each CRI / SSBRI / PVI. Optionally, the UE may report the L1-RSRPs (for example, the predicted L1-RSRPs) associated with / corresponding to each CRI / SSBRI / PVI in a report instance. Optionally, when the number of the reported CRIs / SSBRIs / PVIs is greater than 1, the UE uses differential L1-RSRP-based reporting. Optionally, when N > 1 (and / or if F is configured / if the time domain information is configured with F > 1), the UE uses differential L1-RSRP-based reporting. Optionally, when N is greater than 1, the UE uses differential L1-RSRP-based reporting. Optionally, when the CSI reporting configuration does not include information for time domain prediction, and N is greater than 1, the UE uses the differential L1-RSRP-based reporting. Optionally, when the CSI reporting configuration includes information for time domain prediction, and N or F is greater than 1, the UE uses differential L1-RSRP-based reporting. Optionally, the differential predicted L1-RSRP (or the value of the differential predicted L1-RSRP) is determined / computed based on the largest predicted L1-RSRP (or the value of the largest predicted L1-RSRP) in a report instance. For example, the value of the differential predicted L1-RSRP is computed with a reference to the largest predicted L1-RSRP value which is part of the same reporting instance. Optionally, the differential predicted L1-RSRP (or the value of the differential predicted L1-RSRP) is determined / computed based on the largest predicted L1-RSRP (or the value of the largest predicted L1-RSRP) associated with a time instance. For example, the value of the differential predicted L1-RSRP is computed with a reference to the largest predicted L1-RSRP value which is part of the same time instance in the same report instance.

[0213] - Optionally, the UE may report the L1-RSRPs (e.g., the predicted L1-RSRPs) associated with / corresponding to each time instance. Optionally, the UE may report a L1-RSRP (e.g., a predicted L1-RSRP) associated with / corresponding to each time instance in a report instance. Optionally, each / all of the CRIs / SSBRIs / PVIs in the time instance is associated with the L1-RSRP. Optionally, the differential predicted L1-RSRP (or the value of the differential predicted L1-RSRP) is determined / computed based on the largest predicted L1-RSRP (or the value of the largest predicted L1-RSRP) in a report instance. For example, the value of the differential predicted L1-RSRP is computed with a reference to the largest predicted L1-RSRP value which is part of the same reporting instance.

[0214] - Optionally, the quantization step of the largest (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station (for example, configured by the CSI reporting configuration). Optionally, the quantization step may be greater than or equal to 1dB. Optionally, the quantization step may be one of 1dB, 2dB, 3dB and 4dB. Optionally, the quantization step may be n dB, where n is a positive integer. For example, n is determined based on the UE capability or indicated by the base station. For example, n is configured by the CSI reporting configuration.

[0215] - Optionally, the quantization bit number (Q_abs) of the largest (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station. Optionally, the value of the largest (predicted) L1-RSRP may be quantized into Q_abs bits. Optionally, Q_abs may be predefined or based on the UE capability. Optionally, Q_abs ≤ 7. For example, Q_abs = 7. For example, Q_abs is indicated by the UE capability (for example, Q_abs is the value indicated by the UE capability signaling). For example, Q_abs is configured by the CSI reporting configuration.

[0216] - Optionally, the quantization range of the largest (predicted) L1-RSRP is [-140, -44] dBm.

[0217] - Optionally, the quantization step of the differential (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station. Optionally, the quantization step may be greater than or equal to 2dB. Optionally, the quantization step may be one of 2dB, 4dB, 6dB and 8dB. Optionally, the quantization step may be 2*m dB, where m is a positive integer. Optionally, the quantization step may be 1+m dB, where m is a positive integer. For example, m is determined based on the UE capability or indicated by the base station. For example, m is configured by the CSI reporting configuration.

[0218] - Optionally, the quantization bit number (Q_diff) of the differential (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station. Optionally, the value of the differential (predicted) L1-RSRP may be quantized into Q_diff bits. Optionally, Q_diff may be predefined or based on the UE capability. Optionally, Q_diff ≤ 4. For example, Q_diff = 4. For example, Q_diff is indicated by the UE capability (for example, Q_diff is the value indicated by the UE capability signaling). For example, Q_diff is configured by the CSI reporting configuration.

[0219] - Optionally, the UE may report a L1-RSRP (e.g., the predicted L1-RSRP) in a report instance. Optionally, the each / all of the CRIs / SSBRIs / PVIs in the time instance is associated with the L1-RSRP.

[0220] - Optionally, the L1-RSRP associated with CRI / SSBRI / PVI refers to the (predicted) L1-RSRP corresponding to CRI / SSBRI / PVI, or the (predicted) L1-RSRP determined based on CRI / SSBRI / PVI, or the L1-RSRP predicted based on CRI / SSBRI / PVI.

[0221] The above method for determining / reporting L1-RSRP may reduce the information bits corresponding to L1-RSRP reporting and improve the transmission efficiency of the communication system.

[0222] Optionally, the UE may report N (different) CRIs / SSBRIs / PVIs. Optionally, the UE may report N (different) predicted CRIs / SSBRIs / PVIs. Optionally, the N predicted CRIs / SSBRIs / PVIs are based on the corresponding predicted L1-RSRPs and / or based on the corresponding (predicted) probabilities. Below is described taking CRI / SSBRI / PVI being based on the (predicted) L1-RSRP as an example. Optionally, the N predicted CRIs / SSBRIs / PVIs are determined from the first set based on the corresponding predicted L1-RSRPs. Optionally, the N (predicted) CRIs / SSBRIs / PVIs refer to the strongest / best N (predicted) CRIs / SSBRIs / PVIs. For example, the N predicted CRIs / SSBRIs / PVIs refer to the N CRIs / SSBRIs / PVIs with the highest predicted L1-RSRP. For example, the N predicted CRIs / SSBRIs / PVIs are the N CRIs / SSBRIs / PVIs with the highest predicted L1-RSRP of the first set (or selected from the first set). For example, if the first set includes four CSI-RS resources and N = 2, the UE selects two resources with the highest predicted L1-RSRP from the first set. Optionally, the UE may report the information of the ranking of N predicted CRIs / SSBRIs / PVIs (for example, the ranking information of the sizes of the corresponding L1-RSRPs). For example, UE (explicitly) reports the ranking corresponding to N predicted CRIs / SSBRIs / PVIs. For example, UE reports r (r ≥0) corresponding to CRI / SSBRI / PVI #1, where r indicates that CRI / SSBRI / PVI #1 ranks r+1-th in N CRIs / SSBRIs / PVIs (or r indicates the r+1-th strongest / the r+1-th weakest CRI / SSBRI / PVI, or, r indicates the r+1-th best CRI / SSBRI / PVI). Optionally, the ranking of the sizes of L1-RSRPs corresponding to N predicted CRIs / SSBRIs / PVIs is determined based on the order of CSI parameters (for example, the order of CRIs / SSBRIs / PVIs). Optionally, when N>1, the ranking of the sizes of the L1-RSRPs corresponding to N predicted CRIs / SSBRIs / PVIs is determined based on the order of CSI parameters (for example, the order of CRIs / SSBRIs / PVIs). Optionally, The ranking of the CRIs / SSBRIs / PVIs may be based on the (predicted / measured) L1-RSRPs and / or the (predicted) probabilities. Optionally, below is described taking the ranking of the CRIs / SSBRIs / PVIs being based on the (predicted) L1-RSRPs as an example. Optionally, refer to Table 2 or Table 3 or Table 4 for the mapping order of the CSI fields in a CSI report. Optionally, the CSI report includes: CRI / SSBRI / PVI #1, CRI / SSBRI / PVI #2, …, CRI / SSBRI / PVI #N. Optionally, the CSI associated with CRIs / SSBRIs / PVIs is ranked in ascending order based on CRI / SSBRI / PVI numbers. Optionally, CRI / SSBRI / PVI #1 may be the strongest / weakest CRI / SSBRI / PVI (or the first strongest / first best / first weakest CRI / SSBRI / PVI). Optionally, the predicted L1-RSRP corresponding to CRI / SSBRI / PVI #1 is the highest / lowest among the predicted L1-RSRPs corresponding to N reported CRIs / SSBRIs / PVIs. Optionally, CRI / SSBRI / PVI #2 may be the second strongest / second weakest CRI / SSBRI / PVI (or the second best CRI / SSBRI / PVI). Optionally, the predicted L1-RSRP corresponding to CRI / SSBRI / PVI #2 is the second highest / second lowest among the predicted L1-RSRPs corresponding to N reported CRIs / SSBRIs / PVIs, and so on. Optionally, CRI / SSBRI / PVI #n may be the n-th strongest / weakest CRI / SSBRI / PVI (or the n-th best CRI / SSBRI / PVI). Optionally, the predicted L1-RSRP corresponding to CRI / SSBRI / PVI #n is the n-th highest / nth lowest among the predicted L1-RSRPs corresponding to N reported CRIs / SSBRIs / PVIs. Optionally, n may be one of 1, 2, ..., N. This method defines the reporting method of the ranking information between CSI parameters (for example, CRIs / SSBRIs / PVIs), such that the base station may obtain the ranking information of the reported beams for the base stations to subsequently use appropriate beams for scheduling, improving the efficiency of the communication system.

[0223] Optionally, the CSI report may include N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs. Optionally, the CSI report may include a second indicator. Optionally, refer Table 2 or Table 3 or Table 4 for the N L1-RSRPs and / or the second indicator and / or the mapping method of the L1-RSRPs. Optionally, the second indicator may be used to indicate the CRI / SSBRI / PVI with the largest / smallest corresponding L1-RSRP among N CRIs / SSBRIs / PVIs. Optionally, the second indicator may be used to indicate the CRI / SSBRI / PVI corresponding to the L1-RSRP as the reference of the differential L1-RSRP. Optionally, the bit width of the CSI field associated with the second indicator is determined based on N. Optionally, the bit width of the CSI field associated with the second indicator is , or . Optionally, the second indicator is k2 (k2≥0 and / or k2≤N-1). Optionally, the second indicator is k2 (k2≥0 and / or k2≤N). Optionally, the second indicator k2 is corresponding to CRI / SSBRI / PVI #k2+1. For example, when k2 = 0, the L1-RSRP corresponding to CRI / SSBRI / PVI #1 is largest / smallest. For example, when k2 = N, the L1-RSRP corresponding to CRI / SSBRI / PVI #1 is largest / smallest. For example, when k2 = N, the UE does not determine the CRI / SSBRI / PVI corresponding to the largest / smallest L1-RSRP based on k2. The second indicator may define the largest / smallest L1-RSRP referenced by the differential L1-RSRP, ensuring that the UE and the base station have the same understanding of the reported L1-RSRPs and improving the stability of the communication system.

[0224] Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all predicted L1-RSRPs (or when N CRIs / SSBRIs / PVIs are not associated with resources in the second set), the second indicator does not exist, or the bit width of the second indicator is 0. Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all measured L1-RSRPs (or when N CRIs / SSBRIs / PVIs are all associated with resources in the second set), the second indicator does not exist, or the bit width of the second indicator is 0. When N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all measured L1-RSRPs or predicted L1-RSRPs, the CRI / SSBRI / PVI corresponding to the largest / smallest L1-RSRP may be a predefined CRI / SSBRI / PVI, so the CSI report may not include the second indicator to reduce the reporting overhead and improve the efficiency of the communication system.

[0225] Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all predicted L1-RSRPs (or when N CRIs / SSBRIs / PVIs are not associated with resources in the second set), the second indicator is a predefined value (for example, k2 = 0 or k2 = N-1). Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all measured L1-RSRPs (or when N CRIs / SSBRIs / PVIs are all associated with resources in the second set), the second indicator is a predefined value (for example, k2 = 0 or k2 = N-1). When N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all measured L1-RSRPs or predicted L1-RSRPs, the CRI / SSBRI / PVI corresponding to the largest / smallest L1-RSRP may be a predefined CRI / SSBRI / PVI, and the second indicator may be set to a predefined value without information for the base station to check, thus improving the reliability of the communication system.

[0226] Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all predicted L1-RSRPs (or when N CRIs / SSBRIs / PVIs are not associated with resources in the second set), the L1-RSRP corresponding to the predefined CRI / SSBRI / PVI (for example, the first CRI / SSBRI / PVI, or CRI / SSBRI / PVI #1) is the largest / smallest. Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs are all measured L1-RSRPs (or when N CRIs / SSBRIs / PVIs are all associated with resources in the second set), the L1-RSRP corresponding to the predefined CRI / SSBRI / PVI (for example, the first CRI / SSBRI / PVI, or CRI / SSBRI / PVI #1) is the largest / smallest. This method defines the determination method of CRI / SSBRI / PVI for the largest / smallest L1-RSRP, such that the UE and the base station have the same understanding of the CSI parameters in the CSI report, improving the reliability of the communication system.

[0227] Optionally, when N L1-RSRPs corresponding to N CRIs / SSBRIs / PVIs include at least a measured L1-RSRP and a predicted L1-RSRP (or when at least a CRI / SSBRI / PVI among N CRIs / SSBRIs / PVIs is associated with resources in the second set and at least a CRI / SSBRI / PVI among N CRIs / SSBRIs / PVIs is not associated with resources in the second set), the CRI / SSBRI / PVI corresponding to the largest / smallest L1-RSRP in the CSI report is determined based on the second indicator. This method defines the determination method of CRI / SSBRI / PVI for the largest / smallest L1-RSRP, such that the UE and the base station have the same understanding of the CSI parameters in CSI report, improving the reliability of the communication system.

[0228] Optionally, if the reported CRI / SSBRI / PVI is associated with a resource in the second set, the measured L1-RSRP corresponding to the CRI / SSBRI / PVI is reported. Optionally, if the reported CRI / SSBRI / PVI is not associated with a resource in the second set, the predicted L1-RSRP corresponding to the CRI / SSBRI / PVI is reported. Optionally, the CRI / SSBRI / PVI being associated with a resource in the second set refers to the resource in the first set associated with / corresponding to the CRI / SSBRI / PVI being in the second set; or the resource in the first set associated with / corresponding to the CRI / SSBRI / PVI being the same as one (or any) resource in the second set (for example, with the same CSI-RS resource ID; the CSI-RS resource ID is, for example, NZP-CSI-RS-ResourceId); or, the precoding vector associated with / corresponding to the CRI / SSBRI / PVI being the same as the precoding vector associated with one (or any) resource in the second set (for example, with the same precoding vector ID); or, the beam associated with / corresponding to the CRI / SSBRI / PVI being the same as the beam associated with one (or any) resource in the second set (for example, with the same beam ID). Optionally, the CRI / SSBRI / PVI being not associated with a resource in the second set refers to the resource in the first set associated with / corresponding to the CRI / SSBRI / PVI being not in the second set; or the resource in the first set associated with / corresponding to the CRI / SSBRI / PVI being not the same as one (or any, or all) resource in the second set (for example, without the same CSI-RS resource ID; the CSI-RS resource ID is, for example, NZP-CSI-RS-ResourceId); or the precoding vector associated with / corresponding to the CRI / SSBRI / PVI being not the same as the precoding vector associated with one (or any, or all) resource in the second set (for example, without the same precoding vector ID); or the beam associated with / corresponding to the CRI / SSBRI / PVI being not the same as the beam associated with one (or any, or all) resource in the second set (e.g., without the same beam ID). In some cases, because CRI / SSBRI / PVI #1, CRI / SSBRI / PVI #2, …, CRI / SSBRI / PVI #N are ranked based on the predicted L1-RSRPs, the L1-RSRP corresponding to CRI / SSBRI / PVI #1 is not necessarily the largest among the N reported L1-RSRPs. Therefore, the second indicator is required to indicate the highest / lowest L1-RSRP among the N reported L1-RSRPs in order to define the CRI / SSBRI / PVI which the L1-RSRP on which the differential quantization is based corresponds to. Optionally, the CSI report includes L1-RSRP #1, where L1-RSRP #1 represents / refers to / corresponds to the L1-RSRP corresponding to the CRI / SSBRI / PVI indicated by the second indicator. Here, refer above for the quantization range and quantization bit number corresponding to the largest L1-RSRP (or L1-RSRP #1 or the smallest L1-RSRP). Optionally, the CSI report may include N-1 differential L1-RSRPs (e.g., differential L1-RSRP #1, differential L1-RSRP #2, ..., differential L1-RSRP #N-1). Optionally, the differential L1-RSRP (for example, at least one or each of N-1 differential L1-RSRPs) is determined based on / with reference to the L1-RSRP corresponding to the CRI / SSBRI / PVI indicated by the second indicator. Optionally, differential L1-RSRP #1 refers to the differential L1-RSRP corresponding to the first CRI / SSBRI / PVI (other than the CRI / SSBRI / PVI indicated by the second indicator). Optionally, differential L1-RSRP #2 refers to the differential L1-RSRP corresponding to the second CRI / SSBRI / PVI (other than the CRI / SSBRI / PVI indicated by the second indicator), and so on. Optionally, differential L1-RSRP #N-1 refers to the differential L1-RSRP corresponding to the N-1-th CRI / SSBRI / PVI (other than the CRI / SSBRI / PVI indicated by the second indicator). Optionally, differential L1-RSRP # N1refers to the differential L1-RSRP corresponding to the N1-th CRI / SSBRI / PVI (other than the CRI / SSBRI / PVI indicated by the second indicator). Optionally, differential L1-RSRP # N1refers to the differential L1-RSRP corresponding to the N1-th CRI / SSBRI / PVI (other than the CRI / SSBRI / PVI indicated by the second indicator). Optionally, N1may be one of 1, 2, … N-1. For example, the CSI report include CRI / SSBRI / PVI #1, CRI / SSBRI / PVI #2, CRI / SSBRI / PVI #3 and CRI / SSBRI / PVI #4, where the second indicator indicates CRI / SSBRI / PVI #2, then L1-RSRP #1 corresponds to the L1-RSRP for CRI / SSBRI / PVI #2; differential L1-RSRP #1 corresponds to the L1-RSRP for CRI / SSBRI / PVI #1; differential L1-RSRP #2 corresponds to the L1-RSRP for CRI / SSBRI / PVI #3; differential L1-RSRP #3 corresponds to the L1-RSRP for CRI / SSBRI / PVI #4. Here, refer above for the quantization range and the quantization bit number corresponding to the differential L1-RSRP.

[0229]

[0230]

[0231]

[0232] Optionally, the UE may report N (different) CRIs / SSBRIs / PVIs. Optionally, the UE may report N (different) predicted CRIs / SSBRIs / PVIs. Optionally, N predicted CRIs / SSBRIs / PVIs are determined based on the corresponding predicted probabilities. Optionally, N (predicted) CRI / SSBRI / PVI refer to the strongest / weakest N (predicted) CRIs / SSBRIs / PVIs. Optionally, N predicted CRIs / SSBRIs / PVIs are determined from the first set based on the corresponding predicted probabilities. For example, the N predicted CRIs / SSBRIs / PVIs refer to the N CRIs / SSBRIs / PVIs with the highest predicted probability. For example, the N predicted CRIs / SSBRIs / PVIs are the N CRIs / SSBRIs / PVIs with the highest predicted probability for the first set (or selected from the first set). For example, if the first set includes four CSI-RS resources and N = 2, the UE selects two resources with the highest predicted probability from the first set. Optionally, the sizes of the probabilities corresponding to N predicted CRIs / SSBRIs / PVIs are determined based on the order of CSI parameters (for example, the order of CRIs / SSBRIs / PVIs). Optionally, when N>1, the sizes of the probabilities corresponding to N predicted CRIs / SSBRIs / PVIs are determined based on the order of CSI parameters (for example, the order of CRIs / SSBRIs / PVIs).

[0233] Optionally, in the disclosure, the term "probability" may be used interchangeably with the terms "confidence" or "probability and / or confidence".

[0234] Optionally, whether the N predicted CRIs / SSBRIs / PVIs are based on the corresponding predicted probabilities or the corresponding predicted L1-RSRPs needs to be defined. Optionally, whether the ranking (or ranking information) of N predicted CRIs / SSBRIs / PVIs is based on the corresponding predicted probabilities or the corresponding predicted L1-RSRPs needs to be defined. Optionally, the UE determines that the N predicted CRIs / SSBRIs / PVIs are based on the corresponding predicted probabilities or based on the corresponding predicted L1-RSRPs based on the UE capability and / or the indication information of the base station. Optionally, the UE determines that the ranking (or ranking information) of N predicted CRIs / SSBRIs / PVIs is based on the corresponding predicted probabilities or based on the corresponding predicted L1-RSRPs based on the UE capability and / or the indication information of the base station. Optionally, when the UE reports CRIs / SSBRIs / PVIs and the corresponding L1-RSRPs (in a report instance), N predicted CRIs / SSBRIs / PVIs are determined based on the predicted L1-RSRPs. Optionally, when the UE reports CRIs / SSBRIs / PVIs and the corresponding L1-RSRPs (in a report instance), the ranking (or ranking information) of N predicted CRIs / SSBRIs / PVIs is determined based on the predicted L1-RSRPs. Optionally, when the UE (in a report instance) only reports CRIs / SSBRIs / PVIs (and does not report the corresponding L1-RSRPs), the UE determines whether the N predicted CRIs / SSBRIs / PVIs are based on the predicted L1-RSRPs or the predicted probabilities based on the indication of the base station or the UE capability. Optionally, when the UE (in a report instance) only reports CRIs / SSBRIs / PVIs (and does not report the corresponding L1-RSRPs), the UE determines that the ranking (or ranking information) of N predicted CRIs / SSBRIs / PVIs is based on the predicted L1-RSRPs or the predicted probabilities based on the indication of the base station or the UE capability. Optionally, the UE capability may be capability signaling reported by the UE. Optionally, the indication information of the base station may be indicated / configured by the CSI reporting configuration. The above method defines the determination method of N predicted CRIs / SSBRIs / PVIs or N predicted CRIs / SSBRIs / PVIs, such that the UE and the base station have the same understanding of N predicted CRIs / SSBRIs / PVIs or N predicted CRIs / SSBRIs / PVIs, improving the reliability of the communication system.

[0235] The above method defines the representing method / indication method of CSI parameters in the CSI report, such that the UE and the base station have the same understanding of the CSI report, improving the reliability of the communication system.

[0236] The report of CapabilityIndex is discussed below. Optionally, whether the CSI includes the CapabilityIndex (or whether the CapabilityIndex is reported) may be determined based on the indication of the base station (for example, based on the CSI reporting configuration, or based on the report quantity parameter reportQuantity included in the CSI reporting configuration, or based on the enable parameter included in the CSI reporting configuration).

[0237] - Optionally, the UE may report the CapabilityIndex associated with / corresponding to the CRIs / SSBRIs / PVIs. Optionally, when the first set is not configured, the UE may report the CapabilityIndex associated with / corresponding to the CRIs / SSBRIs / PVIs. Optionally, the UE may report the CapabilityIndex associated with / corresponding to each CRI / SSBRI / PVI. Optionally, the UE may report the CapabilityIndex associated with / corresponding to each CRI / SSBRI / PVI in a report instance. Optionally, the UE may report the CapabilityIndex associated with / corresponding to each CRI / SSBRI / PVI in a report instance, and the value of each CapabilityIndex is equal. The value of each CapabilityIndex being equal may ensure that the UE can perform prediction for the CSI associated with the same CapabilityIndex, which facilitates the base station to compare different CRIs / SSBRIs / PVIs associated with the same CapabilityIndex value, improving the performance of the communication system.

[0238] - Optionally, the UE may report the CapabilityIndex associated with / corresponding to each time instance. Optionally, when the first set is not configured, the UE may report the CapabilityIndex associated with / corresponding to each time instance. Optionally, the UE may report the CapabilityIndex associated with / corresponding to each time instance in a report instance. Optionally, each / all of the CRIs / SSBRIs / PVIs in the time instances is associated with the CapabilityIndex. Optionally, each / all of the CRIs / SSBRIs / PVIs in the time instances is associated with the CapabilityIndex, and the value of each CapabilityIndex is equal. Optionally, the value of each CapabilityIndex being equal may ensure that the UE can perform prediction for the CSI associated with the same CapabilityIndex, which facilitates the base station to compare different CRIs / SSBRIs / PVIs associated with the same CapabilityIndex value, improving the performance of the communication system. Optionally, the determination / reporting method of the CapabilityIndex may reduce the information bits corresponding to the report of the CapabilityIndex, improving the transmission efficiency of the communication system.

[0239] - Optionally, the UE may report the CapabilityIndex in a report instance. Optionally, when the first set is not configured, the UE may report the CapabilityIndex in a report instance. Optionally, each / all of the CRIs / SSBRIs / PVIs in the time instance is associated with the CapabilityIndex. Optionally, the determination / reporting method of the CapabilityIndex can reduce the information bits corresponding to the report of the CapabilityIndex, improving the transmission efficiency of the communication system.

[0240] - Optionally, the CapabilityIndex associated with the CRI / SSBRI / PVI refers to the (predicted) L1-RSRP corresponding to the CRI / SSBRI / PVI, or the (predicted) L1-RSRP determined based on the CRI / SSBRI / PVI, or the L1-RSRP predicted based on the CRI / SSBRI / PVI.

[0241] - Optionally, the value of the CapabilityIndex may be one of 1, 2 and 4. Optionally, the value of the CapabilityIndex may be one of 1, 2, 3 and 4.

[0242] Optionally, the CSI reporting configuration may include / configure a time restriction parameter. Optionally, the time restriction parameter may be the time restriction parameter for channel measurement (e.g., timeRestrictionForChannelMeasurements).

[0243] - Optionally, the UE determines / computes (predicted) CRI / SSBRI / PVI and / or (predicted) L1-RSRP based on the occasions of the reference signals (e.g., SSB resources or CSI-RS resources) no later than CSI reference resource in the second set. Optionally, the CSI reference resource is the CSI reference resource corresponding to the CSI report (for example, the CSI reference resource corresponding to the CSI report carrying the above CSI). For example, if the time restriction parameter (e.g., timeRestrictionForChannelMeasurements) in the CSI reporting configuration is set to "not configured", the UE determines the channel measurement for computing the predicted CRI / SSBRI / PVI and / or the predicted L1-RSRP based on the occasions of the reference signals no later than the CSI reference resource in the second set. Optionally, the reference signals in the second set may be each reference signal in the second set. Optionally, the reference signals in the second set may be all the reference signals in the second set. Optionally, the reference signals in the second set may be at least one reference signal in the second set.

[0244] - Optionally, the UE determines / computes (predicted) CRI / SSBRI / PVI and / or (predicted) L1-RSRP based on the latest occasion of the reference signals (e.g., SSB resources or CSI-RS resources) no later than CSI reference resource in the second set. Optionally, the CSI reference resource is the CSI reference resource reported with the CSI (for example, the CSI reference resource corresponding to the CSI report carrying the above CSI). For example, if the time restriction parameter (e.g., timeRestrictionForChannelMeasurements) in the CSI reporting configuration is set to "configured", the UE determines the channel measurement for computing the predicted CRI / SSBRI / PVI and / or the predicted L1-RSRP based on the occasion of the reference signals no later than the CSI reference resource in the second set. Optionally, the reference signals in the second set may be each reference signal in the second set. Optionally, the reference signals in the second set may be all the reference signals in the second set. Optionally, the reference signals in the second set may be at least one reference signal in the second set.

[0245] - Optionally, the UE determines / computes (predicted) CRI / SSBRI / PVI and / or (predicted) L1-RSRP based on the latest K_case2 occasions of the reference signals (e.g., SSB resources or CSI-RS resources) no later than CSI reference resource in the second set. Optionally, if a first condition is satisfied, the UE determines / computes (predicted) CRI / SSBRI / PVI and / or (predicted) L1-RSRP based on the latest K_case2 occasions of the reference signals (e.g., SSB resources or CSI-RS resources) no later than CSI reference resource in the second set. Optionally, the CSI reference resource is the CSI reference resource reported with the CSI (for example, the CSI reference resource corresponding to the CSI report carrying the above CSI). For example, if the first condition is satisfied, the UE determines the channel measurement for computing the predicted CRI / SSBRI / PVI and / or the predicted L1-RSRP based on the latest K_case2 occasions of the reference signals no later than the CSI reference resource in the second set. Optionally, K_case2 > 1. Optionally, K_case2 may be predefined, or based on the UE capability (for example, indicated by the UE capability signaling), or configured by the base station (for example, configured by the CSI reporting configuration). Optionally, K_case2 may be one of 1 to 8. Optionally, the reference signals in the second set may be each reference signal in the second set. Optionally, the reference signals in the second set may be all the reference signals in the second set. Optionally, the reference signals in the second set may be at least one reference signal in the second set. Optionally, the first condition may include at least one of the followings:

[0246] -- The second set is a semi-persistent / periodic CSI-RS resource set, or the second set is an SSB resource set.

[0247] -- The time restriction parameter for channel measurement (for example, timeRestrictionForChannelMeasurements) in the CSI reporting configuration is set to "configured".

[0248] -- The time domain information is configured. For example, the CSI reporting configuration includes the time domain information. For example, the CSI reporting configuration is configured with the time domain information.

[0249] - Optionally, when the CSI reporting configuration includes the time domain information (or the CSI reporting configuration is configured with the time domain information), the UE ignores (or does not apply) the time restriction parameter for channel measurement (e.g., timeRestrictionForChannelMeasurements).

[0250] - Optionally, when the CSI reporting configuration includes the time domain information (or the CSI reporting configuration is configured with the time domain information), the time restriction parameter for channel measurement (e.g., timeRestrictionForChannelMeasurements) is set to "configured". For example, when the CSI reporting configuration includes the time domain information (or the CSI reporting configuration is configured with the time domain information), the UE expects that the time restriction parameter for channel measurement (e.g., timeRestrictionForChannelMeasurements) is set to "configured".

[0251] - Optionally, when the CSI reporting configuration includes the time domain information (or the CSI reporting configuration is configured with the time domain information), the time restriction parameter for channel measurement (for example, timeRestrictionForChannelMeasurements) is set to "not configured". For example, when the CSI reporting configuration includes the time domain information (or the CSI reporting configuration is configured with the time domain information), the UE expects that the time restriction parameter for channel measurement (e.g., time restriction for channel measurement) is set to "not configured".

[0252] The method associated with the time domain restriction may determine when the UE performs beam prediction based on the measurement and defines the UE behaviors, improving the reliability of the communication system.

[0253] In some cases, the UE may report the UE capability (e.g., the UE capability signaling), wherein the UE capability indicates the maximum number (e.g., total number) of the resources supported by the UE. Optionally, UE capability signaling indicates the maximum number (e.g., total number) of the resources supported in a slot. Optionally, the resources refer to reference signal resources (for example, SSB resources and / or CSI-RS resources). Optionally, the resources refer to the resources used for prediction. Optionally, the resources refer to the resources used for beam prediction. Optionally, the reference signal resources refer to the reference signal resources used for CRI / SSBRI / PVI prediction. Optionally, for UE capability signaling, the resource is counted based on the first set and / or the second set. Optionally, for the number (e.g., total number) of resources indicated by the UE capability signaling, the counting of the number of resources is based on the first set and / or the second set. For example, the number of times a resource is counted is determined based on whether the resource is in the first set and / or the second set. Optionally, for the CSI reporting configuration, if a resource is in the second set, the resource is counted once or Z times, where Z is determined based on the UE capability. Optionally, for the CSI reporting configuration, if a resource is in the first set and the UE measures the first set, the resource is counted once. Optionally, for the CSI reporting configuration, if a resource is in the first set and the UE does not measure the first set, the resource is not counted. Optionally, for the CSI reporting configuration, if a resource is in the first set, and the resource is in the second set, and the UE measures the first set, the resource is counted twice or Z+1 times, where Z is determined based on the UE capability. Optionally, for the CSI reporting configuration, if a resource is in the first set, and the resource is in the second set, and the UE does not measure the first set, the resource is counted once or Z times, where Z is determined based on the UE capability. Optionally, when the second set is a periodic CSI-RS resource set / a semi-persistent CSI-RS resource set / an SSB resource set, and the CSI reporting configuration includes the time domain information, the number of times the resource is counted is determined based on Z. For example, for the CSI reporting configuration, if a resource is in the second set, and the second set is a periodic CSI-RS resource set / a semi-persistent CSI-RS resource set / an SSB resource set, and the CSI reporting configuration includes the time domain information, the resource is counted Z times, where Z is determined based on the UE capability. For example, for the CSI reporting configuration, if a resource is in the second set, and the second set is a periodic CSI-RS resource set / a semi-persistent CSI-RS resource set / an SSB resource set, and the CSI reporting configuration includes the time domain information, and the resource is in the first set, and the UE measures the first set, the resource is counted Z+1 times, where Z is determined based on the UE capability. For example, for the CSI reporting configuration, if a resource is in the second set, and the second set is a periodic CSI-RS resource set / a semi-persistent CSI-RS resource set / an SSB resource set, and the CSI reporting configuration includes the time domain information, and the resource is in the first set, and the UE does not measure the first set, the resource is counted Z times, where Z is determined based on the UE capability. For example, for the CSI reporting configuration, if a resource is in the second set, and the second set is a periodic CSI-RS resource set / a semi-persistent CSI-RS resource set / an SSB resource set, and the CSI reporting configuration includes the time domain information, and the resource is not in the first set, the resource is counted Z times, where Z is determined based on the UE capability. For example, for the CSI reporting configuration, if a resource is in the second set and the CSI reporting configuration does not include the time domain information, the resource is counted once. For example, for the CSI reporting configuration, if a resource is in the second set, and the CSI reporting configuration does not include the time domain information, and the resource is in the first set, and the UE measures the first set, the resource is counted twice. For example, for the CSI reporting configuration, if a resource is in the second set, and the CSI reporting configuration does not include the time domain information, and the resource is in the first set, and the UE does not measure the first set, the resource is counted once. For example, for the CSI reporting configuration, if a resource is in the second set, and the CSI reporting configuration does not include the time domain information, and the resource is not in the first set, the resource is counted once. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8.

[0254] Optionally, the UE may report the second UE capability. For example, the UE reports the second UE capability before receiving the CSI reporting configuration. Optionally, the second UE capability are associated with / include the capability associated with AI / ML. Optionally, the second UE capability may indicate that the AI / ML capability at the UE side is supported. Optionally, the second UE capability may be associated with beam prediction. Optionally, the beam prediction may be CRI / SSBRI / PVI prediction. For example, the second UE capability may be the capability for beam prediction. Optionally, the beam prediction may be based on the L1-RSRP measurement. Optionally, the beam prediction may include time domain beam prediction and / or spatial domain beam prediction. Optionally, the second UE capability may indicate that SSB is supported as the resource for channel measurement, and / or CSI-RS is supported as the resource for channel measurement. Optionally, the second UE capability may indicate the maximum number of the supported resources. Optionally, the second UE capability may include at least one of the following parameters:

[0255] - Parameter #1: a parameter indicating the maximum number of SSBs for channel measurement. Optionally, the SSBs for channel measurement may be for the second resource set. For example, the parameter indicates the maximum number of SSBs for channel measurement. For example, the parameter indicates the maximum number of SSBs for channel measurement in a frequency band. For example, the parameter indicates the maximum number of SSBs for channel measurement in a time unit (or in each slot) in a frequency band. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the time unit may be a slot, a symbol.

[0256] - Parameter #2: a parameter indicating the maximum number of SSBs / CSI-RSs for channel measurement. Optionally, the SSBs / CSI-RSs for channel measurement may be for the resources of the second set. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement in a frequency band. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement in a time unit (or in each slot) in a frequency band. Optionally, the CSI-RS may be a 1TX CSI-RS. Optionally, "1TX" represents one transmitter. Optionally, "1TX" represents one antenna port. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the time unit may be a slot, a symbol.

[0257] - Parameter #3: a parameter indicating the maximum number of CSI-RSs for channel measurement. Optionally, the CSI-RSs for channel measurement may be for the second resource set. For example, the parameter indicates the maximum number of CSI-RSs for channel measurement. For example, the parameter indicates the maximum number of CSI-RSs for channel measurement in a frequency band. For example, the parameter indicates the maximum number of CSI-RSs for channel measurement in a time unit (or in each slot) in a frequency band. Optionally, the CSI-RS may be a 2TX CSI-RS. Optionally, "2TX" represents two transmitters. Optionally, "2TX" represents two antenna ports. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the time unit may be a slot, a symbol.

[0258] - Parameter #4: a parameter indicating the maximum number of SSBs for prediction (or for model monitoring). Optionally, the SSBs for prediction (or for model monitoring) may be for the resources of the first set. For example, the parameter indicates the maximum number of SSBs for prediction (or for model monitoring). For example, the parameter indicates the maximum number of SSBs for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of SSBs for prediction (or for model monitoring) in a slot (or in each slot) in a frequency band. Optionally, the UE may be configured to measure the set (e.g., the first set) where SSB / SSB resources for prediction (or for model monitoring) are located. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0259] - Parameter #5: a parameter indicating the maximum number of SSBs / CSI-RSs for prediction (or for model monitoring). Optionally, the SSBs / CSI-RSs for prediction (or for model monitoring) may be for the resources of the first set. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for prediction (or for model monitoring). For example, the parameter indicates the maximum number of SSBs / CSI-RSs for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for prediction (or for model monitoring) in a time unit (or in each slot) in a frequency band. Optionally, the CSI-RS may be a 1TX CSI-RS. Optionally, "1TX" represents one transmitter. Optionally, "1TX" represents one antenna port. Optionally, the SSB / CSI-RS for prediction (or for model monitoring) refers to / includes the SSB / CSI-RS where the set (for example, the first set) where the SSB / CSI-RS resource is located is configured for measurement. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0260] - Parameter #6: a parameter indicating the maximum number of CSI-RSs for prediction (or for model monitoring). Optionally, the CSI-RSs for prediction (or for model monitoring) may be the CSI-RS resources in the second set. For example, the parameter indicates the maximum number of CSI-RSs for prediction (or for model monitoring). For example, the parameter indicates the maximum number of CSI-RSs for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of CSI-RSs for prediction (or for model monitoring) in a time unit (or in each slot) in a frequency band. Optionally, the CSI-RS may be a 2TX CSI-RS. Optionally, "2TX" represents two transmitters. Optionally, "2TX" represents two antenna ports. Optionally, the CSI-RS for prediction (or for model monitoring) refers to / includes the CSI-RS where the set (e.g., the first set) where the CSI-RS resource is located is configured for measurement. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0261] - Parameter #7: a parameter indicating the maximum number of SSBs for channel measurement. Optionally, the parameter indicating the maximum number of SSBs for channel measurement and / or for prediction (or for model monitoring). Optionally, the SSBs for channel measurement and / or for prediction (or for model monitoring) may be for the resources of the first set and / or the second set. For example, the parameter indicates the maximum number of SSBs for channel measurement and / or for prediction (or for model monitoring). For example, the parameter indicates the maximum number of SSBs for channel measurement and / or for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of SSBs for channel measurement and / or for prediction (or for model monitoring) in a time unit in a frequency band. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the SSB for prediction (or for model monitoring) refers to / includes the SSB where the set (for example, the first set) where the SSB / SSB resource is located is configured for measurement. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0262] - Parameter #8: a parameter indicating the maximum number of SSBs / CSI-RSs for channel measurement and / or for prediction (or for model monitoring). Optionally, the SSBs / CSI-RSs for channel measurement and / or for prediction (or for model monitoring) may be for the resources of the first set and / or the second set. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement and / or for prediction (or for model monitoring). For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement and / or for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of SSBs / CSI-RSs for channel measurement and / or for prediction (or for model monitoring) in a time unit in a frequency band. Optionally, the CSI-RS may be a 1TX CSI-RS. Optionally, "1TX" represents one transmitter. Optionally, "1TX" represents one antenna port. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the SSB / CSI-RS for prediction (or for model monitoring) refers to / includes the SSB / CSI-RS where the set (for example, the first set) where the SSB / CSI-RS resources is located is configured for measurement. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0263] - Parameter #9: a parameter indicating the maximum number of CSI-RSs for channel measurement and / or for prediction (or for model monitoring). Optionally, the CSI-RSs for channel measurement may be for the resources of the first set and / or the second set. For example, the parameter indicates the maximum number of CSI-RSs for channel measurement and / or for prediction (or for model monitoring). For example, the parameter indicates the maximum number of CSI-RSs for channel measurement and / or for prediction (or for model monitoring) in a frequency band. For example, the parameter indicates the maximum number of CSI-RSs for channel measurement and / or for prediction (or for model monitoring) in a time unit in a frequency band. Optionally, the CSI-RS may be a 2TX CSI-RS. Optionally, "2TX" represents two transmitters. Optionally, "2TX" represents two antenna ports. Optionally, the channel measurement may be the channel measurement for beam prediction. Optionally, the CSI-RS for prediction (or for model monitoring) refers to / includes the CSI-RS where the set (e.g., the first set) where the CSI-RS resource is located is configured for measurement. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the time unit may be a slot, a symbol.

[0264] Optionally, in any slot, the UE is not expected to have more SSB / CSI-RS resources within a slot (in active BWPs) than reported as capability. Optionally, in any time unit (e.g., slot), (the UE determines that) SSB / CSI-RS resources are not more than the number of the reported capabilities. Below is described by taking the time unit as the slot as an example. Optionally, for the second UE capability, an SSB / CSI-RS resource is counted within the duration of a slot (e.g., reference slot) in which the corresponding reference signals are transmitted. Optionally, the reference slot duration is the shortest slot duration for the frequency range. Optionally, the frequency range refers to the frequency range where the reported frequency band is located. Optionally, the frequency range refers to the frequency range where the frequency band corresponding to the reported second UE capability is located. Optionally, the reference slot duration is the shortest slot duration for the band. Optionally, the frequency band refers to the frequency band corresponding to the reported second UE capability. For example, if CSI-RS resource #1 is transmitted in slot #1, CSI-RS resource #1 is counted in slot #1. The count number (or the number of times a resource is counted in a slot) is described later. Optionally, for the second UE capability (for example, at least one of parameter #1, parameter #2, and parameter #3 indicated by the second UE capability), the computation / determination method of the count number corresponding to a resource may be at least one of the followings:

[0265] - Method 1: the count number of a resource is determined based on the second set associated with the CSI reporting configuration. Optionally, a resource in the second set associated with the CSI reporting configuration is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration and the CSI reporting configuration does not include the time domain information, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration and the CSI reporting configuration includes the time domain information, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is an aperiodic resource set, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8.

[0266] - Method 2: the count number of a resource is determined based on the second set associated with one or more CSI reporting configurations. Optionally, if a resource is referenced by one or more CSI reporting configurations, the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above) for channel measurement, the resource is counted once. Optionally, if a resource is referenced Z times by one or more CSI reporting configurations, the resource is counted Z times.

[0267] Optionally, for the second UE capability (for example, at least one of parameter #4, parameter #5 and parameter #6 indicated by the second UE capability), the computation / determination method of the count number corresponding to a resource may be at least one of the followings:

[0268] - Method 1: the count number of a resource is determined based on the first set associated with the CSI reporting configuration. Optionally, a resource in the first set associated with the CSI reporting configuration is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration does not include the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration includes the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is an aperiodic resource set, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, one condition of using Method 1 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set.

[0269] - Method 2: the count number of a resource is determined based on the first set associated with one or more CSI reporting configurations. Optionally, if a resource is referenced by one or more CSI reporting configurations, the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above) for prediction (or for beam prediction, or for model monitoring), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations for prediction (or for beam prediction, or for model monitoring) Z1 times, the resource is counted Z1 times. Optionally, one condition of using Method 2 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set.

[0270] Optionally, for the second UE capability (for example, at least one of parameter #7, parameter #8 and parameter #9 indicated by the second UE capability), the computation / determination method of the count number corresponding to a resource may be at least one of the followings:

[0271] - Method 1: the count number of a resource is determined based on the first set associated with the CSI reporting configuration. Optionally, a resource in the first set associated with the CSI reporting configuration is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration does not include the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration includes the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is an aperiodic resource set, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, one condition of using Method 1 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set.

[0272] - Method 2: the count number of a resource is determined based on the first set and / or the second set associated with one or more CSI reporting configurations. Optionally, if a resource is referenced by one or more CSI reporting configurations, the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above) for channel measurement and / or for prediction (or for beam prediction, or for model monitoring), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations for channel measurement and / or for prediction (or for beam prediction, or for model monitoring) Z1 times, the resource is counted Z1 times. Optionally, one condition of using Method 2 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set.

[0273] - Method 3: the count number of a resource is determined based on the second set associated with the CSI reporting configuration. Optionally, a resource in the second set associated with the CSI reporting configuration is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration and the CSI reporting configuration does not include the time domain information, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration and the CSI reporting configuration includes the time domain information, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is an aperiodic resource set, the resource is counted once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8.

[0274] - Method 4: the count number of a resource is determined based on the second set associated with one or more CSI reporting configurations. Optionally, if a resource is referenced by one or more CSI reporting configurations, the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above), the resource is counted once. Optionally, if a resource is used by one or more CSI reporting configurations (for example, the CSI reporting configuration described above) for channel measurement, the resource is counted once. Optionally, if a resource is referenced Z times by one or more CSI reporting configurations, the resource is counted Z times.

[0275] - Method 5: the count number of a resource is determined based on the first set and the second set associated with the CSI reporting configuration. Optionally, a resource in the first set and the second set associated with the CSI reporting configuration is counted twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, the resource is counted twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration does not include the time domain information, the resource is counted twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, the resource is counted 1+Z times. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is an aperiodic resource set, the resource is counted twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z+1 times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, one condition of using Method 5 is that the first set is measured by the UE (or the UE measures the first set). Optionally, refer above for the method for determining whether the UE measures the first set.

[0276] In some cases, the UE may report the third UE capability. For example, the UE reports the third UE capability before receiving the CSI reporting configuration.

[0277] - Optionally, the third UE signaling indicates the maximum total number of SSB / CSI-RS / CSI-IM resources for one frequency range that the UE supports. Optionally, SSB / CSI-RS / CSI-IM resources may be for at least one of beam management, pathloss measurement, beam failure detection (BFD), radio link monitoring (RLM) and new beam identification. Optionally, the third UE capability signaling is, for example, maxTotalResourcesForOneFreqRange.

[0278] - Optionally, the third UE capability signaling indicates the maximum total number of SSB / CSI-RS / CSI-IM resources configured to measure within a slot across all CCs in one frequency range. Optionally, SSB / CSI-RS / CSI-IM resources may be for any (or at least one of) of L1-RSRP measurement, L1-SINR measurement, pathloss measurement, BFD, RLM and new beam identification. Optionally, the third UE capability signaling is, for example, maxNumberResWithinSlotAcrossCC-OneFR.

[0279] In some cases, the UE may report the fourth UE capability. For example, the UE reports the fourth UE capability before receiving the CSI reporting configuration.

[0280] - Optionally, the fourth UE capability signaling indicates the maximum total number of SSB / CSI-RS / CSI-IM resources across frequency ranges (both FR1 and FR2) that the UE supports. Optionally, SSB / CSI-RS / CSI-IM resources may be for at least one of beam management, pathloss measurement, BFD, RLM and new beam identification. Optionally, the fourth UE capability signaling is, for example, maxTotalResourcesForAcrossFreqRanges.

[0281] - Optionally, the fourth UE capability signaling indicates the maximum total number of SSB / CSI-RS / CSI-IM resources configured to measure within a slot across all CCs across all frequency range. Optionally, SSB / CSI-RS / CSI-IM resources may be for any (or at least one of) of L1-RSRP measurement, L1-SINR measurement, pathloss measurement, BFD, RLM and new beam identification. Optionally, the fourth UE capability signaling is, for example, maxNumberResWithinSlotAcrossCC-AcrossFR.

[0282] Optionally, in any slot, the UE is not expected to have more SSB / CSI-RS / CSI-IM resources configured to measure within a slot (in active BWPs) than reported as capability. Optionally, for the third UE capability or the fourth UE capability, in any time unit (e.g. slot), (the UE determines that) the SSB / CSI-RS / CSI-IM resources configured for measurement are not more than the number of the reported capabilities. Optionally, the number of the reported capabilities refers to the number of the resources indicated by the third UE capability or the number of the resources indicated by the fourth UE capability.

[0283] - Optionally, "configured to measure" reference signal is counted within the duration of a reference slot in which the corresponding reference signals are transmitted. For example, if a reference signal is transmitted on slot #1, the reference signal is counted (for example, counted once) on slot #1. Optionally, the reference slot duration is the shortest slot duration (defined) for the reported FR supported by the UE.

[0284] - Optionally, the maximum number indicated by the third UE capability or the fourth UE capability only counts the resources in active BWP. Optionally, the maximum number indicated by the third UE capability or the fourth UE capability refers to the maximum number of the resources in the active BWP.

[0285] Optionally, the counting of the RS configured to measure may be based on at least one of the following methods.

[0286] - Method 1: if a resource is used for one or multiple of BFD / RLM, it is counted as one. For example, if a resource is used for one or multiple of BFR / RLM, the resource is counted once.

[0287] - Method 2: if a resource is used for one or multiple of New Beam Identification / PL-RS / L1-RSRP, add 1. For example, if a resource is used for one or multiple of New Beam Identification / PL-RS / L1-RSRP, the resource is counted once. Optionally, the L1-RSRP (or L1-RSRP measurement, or resource for L1-RSRP measurement) includes / is associated with at least one of the followings (or includes / is associated with at least one of the following cases):

[0288] -- The report quantity parameter (for example, reportQuantity) is set to 'ssb-Index-RSRP', 'cri-RSRP'. Optionally, the report quantity parameter refers to the report quantity parameter associated with the CSI reporting configuration corresponding to / associated with the resource;

[0289] -- The report quantity parameter (for example, reportQuantity) is set to 'cri-RSRP-Index', 'ssb-Index-RSRP-Index'. Optionally, the report quantity parameter refers to the report quantity parameter associated with the CSI reporting configuration corresponding to the resource;

[0290] -- The reportQuantity parameter (for example, report quantity) is set to 'none'. Optionally, the report quantity parameter refers to the report quantity parameter associated with the CSI reporting configuration corresponding to / associated with the resource;

[0291] -- The resource set where the resource is located is not configured with the TRS information parameter (for example, trs-Info) and / or the resource set is configured with the repetition parameter (for example, repetition);

[0292] -- The resource is in the first set; for example, the UE is configured with the information for enabling measurement of the first set, and the resource is in the first set;

[0293] -- The resource is in the second set;

[0294] -- The resource is in the first set and the second set; for example, the UE is configured with the information for enabling measurement of the first set, and the resource is in the first set and the second set.

[0295] - Method 3: the count number of a resource is determined based on the second set associated with the CSI reporting configuration. Optionally, the counting of a resource in the second set associated with the CSI reporting configuration is increased once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, the counting of the resource is increased once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration does not include the time domain information, the counting of the resource is increased once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, the counting of the resource is increased once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is an aperiodic resource set, the counting of the resource is increased once. Optionally, if a resource is in the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the counting of the resource is increased by Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, the performance of the third method may be based on Method 1 and / or Method 2 and / or the following Method 4. For example, if a resource is used by Method 1 and / or Method 2 and / or Method 4, and the resource is used by Method 3, the number of times the resource is counted is increased by the number of times corresponding to Method 3 on the basis of the number of times counted by Method 1 and / or Method 2 and / or Method 4.

[0296] - Method 4: the count number of a resource is determined based on the first set associated with the CSI reporting configuration. Optionally, a resource in the first set associated with the CSI reporting configuration is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration does not include the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration and the CSI reporting configuration includes the time domain information, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is an aperiodic resource set, the resource is counted once. Optionally, if a resource is in the first set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the resource is counted Z times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, one condition of using Method 4 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the performance of Method 4 may be based on Method 1 and / or Method 2 and / or Method 3. For example, if a resource is used by Method 1 and / or Method 2 and / or Method 3, and the resource is used by Method 4, the number of times the resource is counted is increased by the number of times corresponding to Method 4 on the basis of the number of times counted by Method 1 and / or Method 2 and / or Method 3.

[0297] - Method 5: the count number of a resource is determined based on the first set and the second set associated with the CSI reporting configuration. Optionally, the counting of the resource in the first set and the second set associated with the CSI reporting configuration is increased twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, the counting of the resource is increased twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration does not include the time domain information, the counting of the resource is increased twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, the counting of the resource is increased by 1+Z times. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the second set is an aperiodic resource set, the counting of the resource is increased twice. Optionally, if a resource is in the first set and the second set associated with the CSI reporting configuration, and the CSI reporting configuration includes the time domain information, and the first set is a periodic resource set / a semi-persistent resource set / an SSB resource set, the counting of the resource is increased by Z+1 times. Optionally, Z is indicated based on the UE capability. Optionally, the value of Z may be 1, 2, 4, 8. Optionally, the value of Z may be an integer ranged from 1 to 8. Optionally, one condition of using Method 5 is that the first set is measured by the UE. Optionally, refer above for the method for determining whether the UE measures the first set. Optionally, the performance of Method 5 may be based on Method 1 and / or Method 2. For example, if a resource is used by Method 1 and / or Method 2 and the resource is used by Method 5, the number of times the resource is counted is increased by the number of times corresponding to Method 5 on the basis of the number of times counted by Method 1 and / or Method 2.

[0298] The above methods define the resource counting method for the UE capabilities, which may facilitate the base station and the UE to have the same understanding of the maximum number of the resources supported by the UE capability, avoiding the situation that the number of resources is beyond the capability range supported by the UE and ensuring the stability of the communication system.

[0299] In the disclosure, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be based on artificial intelligence / machine learning (AI / ML). In the disclosure, the term "AI / ML" may be used interchangeably with the term "AI / ML model" or "model". In the disclosure, a model may be a UE side model. Optionally, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be used for inference. Optionally, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be used to report inference result. In the disclosure, inference may be based on the AI / ML model. Optionally, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be used for model monitoring. In the disclosure, model monitoring may be the monitoring of the AI / ML model. Optionally, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be used for training. In the disclosure, training may be the training of the AI / ML model. Optionally, the CSI reporting configuration and / or the CSI report associated with / corresponding to the CSI reporting configuration may be used for data collection. In the disclosure, data collection may be the data collection for the AI / ML model.

[0300] In some cases, the UE may receive (or be configured with) CSI reporting configuration. Optionally, the CSI reporting configuration (or the CSI report corresponding to the CSI reporting configuration) may be used for data collection. Optionally, the CSI reporting configuration (or CSI report corresponding to the CSI reporting configuration) may be used for the UE side model. Optionally, there may be no report corresponding to the CSI reporting configuration. For example, the report quantity parameter (for example, reportQuantity) in the CSI reporting configuration is set to 'none'.

[0301] Optionally, the UE may measure the associated reference signal resource based on the CSI reporting configuration. Optionally, the reference signal resource associated with the CSI reporting configuration may be the reference signal resource in the resource set associated with / indicated by the CSI reporting configuration. Optionally, the CSI reporting configuration may be associated with / indicate / include one resource setting or two resource settings. Optionally, the resource setting may be indicated by the higher-layer parameter CSI-ResourceConfig. In the disclosure, "resource setting" may be used interchangeably with "set", "resource set" or "configuration information of resource set". A resource setting may include configuration information of one or more resource sets. For example, the CSI reporting configuration may be associated with a resource setting, where the resource setting includes configuration information of a third set. For example, the CSI reporting configuration may be associated with two resource settings, where the two resource settings respectively include configuration information of the third set and configuration information of a fourth set. Optionally, the CSI reporting configuration may be associated with / indicate / include one resource set or two resource sets. For example, the CSI reporting configuration may be associated with one resource set (e.g., the third set), or the CSI reporting configuration may be associated with only one resource set (e.g., the third set), or the CSI reporting configuration may be associated with two resource sets (e.g., the third set and the fourth set). Optionally, the third set may include one or more reference signal resources. Optionally, the fourth set may include one or more reference signal resources. Optionally, the third set may be used for measurement, or for inference (or for prediction). Optionally, the fourth set may be used for measurement. Optionally, the third set and / or the fourth set may be used for channel measurement. Optionally, a resource set may be configured via the higher-layer parameter NZP-CSI-RS-ResourceSet. Optionally, the configuration information of the third set includes a repetition parameter (for example, the repetition parameter is set to "off"). Optionally, the third set is not configured with a TRS information parameter (with higher layer parameter trs-Info not configured). Optionally, the fourth set is not configured with the TRS information parameter (with higher layer parameter trs-Info not configured). Optionally, the configuration information of the fourth set includes a repetition parameter (for example, the repetition parameter is set to "off").

[0302] Optionally, the periodicity of the resource in the third set is the same as the periodicity of the resource in the fourth set. Optionally, when the resources in the third set are periodic resources / semi-persistent resources / SSBs and the resources in the fourth set are periodic resources / semi-persistent resources / SSBs, the periodicity of the resource in the third set is the same as the periodicity of the resource in the fourth set. Due to the timeliness of data collection, that is, the measurement results that are close in time domain are more relevant, therefore, the restriction of the periodicities in the third set and the fourth set can facilitate the UE to collect measurement results for the reference signals of the same periodicity, improving the correlation of collected data and improving the efficiency of corresponding AI / ML model training.

[0303] Optionally, the type of the resource in the third set is the same as the type of the resource in the fourth set. The type of the resource includes at least one of the followings: 1) periodic reference signal resource (for example, periodic CSI-RS resource and / or SSB resource); 2) semi-persistent reference signal resource (for example, semi-persistent CSI-RS resource); 3) aperiodic reference signal resource (for example, aperiodic CSI-RS resource).

[0304] The UE needs to obtain the usage of the third set and / or the fourth set in order to perform corresponding measurement and / or reporting operations. The following method may allow the UE to obtain the usage of the set under corresponding situation implicitly, saving signaling overhead.

[0305] Optionally, when a sixth condition is satisfied, the first of the two sets is used for prediction (and / or for inference) and / or the second of the two sets is used for measurement (for example, for channel measurement). Optionally, the sixth condition includes at least one of the followings: 1) the report quantity parameter in the CSI reporting configuration is not set to "none", or the report quantity parameter in the CSI reporting configuration is set to 'cri-RSRP' or 'ssb-Index-RSRP'; 2) two sets (e.g., the third set and the fourth set) are configured; 3) associated ID is configured; 4) the CSI reporting configuration is used for inference / prediction (for example, the CSI reporting configuration is configured with a parameter indicating that the CSI reporting configuration is used for inference / prediction). Optionally, this method is applicable for CSI prediction. Optionally, this method is applicable for CSI reporting configuration for model inference. Optionally, this method is applicable for CSI reporting configuration for prediction. Optionally, this method is applicable to the UE side model.

[0306] Optionally, when a seventh condition is satisfied, the first of the two sets is used for measurement (for example, for channel measurement) and / or the second of the two sets is used for measurement (and / or for channel measurement). Optionally, the seventh condition includes at least one of the followings: 1) the report quantity parameter in the CSI reporting configuration is set to "none"; 2) two sets (e.g., the third set and the fourth set) are configured; 3) the associated ID is configured; 4) the CSI reporting configuration is used for data collection (for example, the CSI reporting configuration is configured with a parameter indicating that the CSI reporting configuration is used for data collection). Optionally, this method is applicable for CSI reporting configuration for data collection. Optionally, this method is applicable to the UE side model. Optionally, this method is applicable for data collection.

[0307] Optionally, when the seventh condition is satisfied, the CSI reporting configuration is used for time domain prediction and / or spatial domain prediction (or, the CSI reporting configuration is used for data collection associated with time domain prediction and / or spatial domain prediction).

[0308] Optionally, when an eighth condition is satisfied, the CSI reporting configuration is used for time domain prediction (or, the CSI reporting configuration is used for data collection associated with time domain prediction). Optionally, the eighth condition includes at least one of the followings: 1) the report quantity parameter in the CSI reporting configuration is set to "none"; 2) one set (e.g., the third set) is configured, or only one set (e.g., the third set) is configured; 3) the associated ID is configured; 4) the CSI reporting configuration is used for data collection (for example, the CSI reporting configuration is configured with a parameter indicating that the CSI reporting configuration is used for data collection).

[0309] Optionally, the CSI reporting configuration may be configured / indicated with the associated ID. Optionally, the CSI reporting configuration may be configured / indicated with an associated ID. For example, the associated ID is applicable for the third set and / or the fourth set. Optionally, the CSI reporting configuration may be configured / indicated with two associated IDs. For example, these two associated IDs are applicable for the third set and the fourth set, respectively.

[0310] Optionally, the resource set associated with the CSI reporting configuration may be configured / indicated with the associated ID. Optionally, each resource set associated with the CSI reporting configuration may be configured / indicated with the associated ID, respectively.

[0311] Optionally, the associated ID is used to ensure the consistency across training and influence. Optionally, the UE may assume properties of a DL Tx beam or a beam set or a beam list associated with the same associated ID are similar / the same. Optionally, the UE may measure (or perform data collection, or determine / generate CSI) based on the assumption that the order of beams of the resource set associated with the CSI reporting configuration associated with the same associated ID or the order of resources in the resource set are similar / the same. Optionally, the UE may measure (or perform data collection, or determine / generate CSI) based on the assumption that the order of beams of the resource set associated with the same associated ID or the order of resources in the resource set are similar / the same. Here, determining / generating CSI may be predicting CSI.

[0312] Optionally, the third set and / or the fourth set may include semi-persistent resources. The semi-persistent resources may be semi-persistent CSI-RS resources. Optionally, the third set and / or the fourth set may be semi-persistent resource sets. Optionally, the third set and / or the fourth set may be semi-persistent CSI-RS resource sets. Optionally, the parameter (resourceType) for indicating the resource type associated with the third set and / or the fourth set is set to 'semiPersistent'. The parameter (resourceType) for indicating the resource type associated with / included in the resource setting corresponding to the third set and / or the fourth set is set to 'semiPersistent'.

[0313] Optionally, the fourth set may be a subset of the third set. Optionally, the fourth set being a subset of the third set means at least one of the followings: 1) the resources in the fourth set are in the third set; 2) all resources in the fourth set are in the third set; 3) the IDs of the resources in the fourth set are in the IDs of the resources included in the third set; 4) the IDs of all resources in the fourth set are in the IDs of the resources included in the third set; 5) the ID of each resource in the fourth set is equal to an ID of a resource in the third set.

[0314] Optionally, the UE receives third information. In the disclosure, the third information may be an indication from the base station. The third information may be indicated by at least one of the followings: 1) RRC; 2) MAC-CE; 3) DCI.

[0315] Optionally, the third information may be used to activate or deactivate the resource set. Optionally, the third information is used to activate or deactivate the semi-persistent CSI-RS resource set. Optionally, the third information may indicate the QCL assumption of each resource in the resource set. Optionally, when the third information activates a resource set, the third information may indicate the QCL assumption of each resource in the resource set. Optionally, the third information may respectively indicate the QCL assumption of each resource in the resource set. Here, the QCL assumption of the resource may be the QCL assumption used by the reception of the resource. In the disclosure, "QCL assumption" may be used interchangeably with "TCI state" or "QCL parameter".

[0316] Optionally, the resource set (e.g., the third set and / or the fourth set) may be activated by the third information. Optionally, the third information may include / indicate the ID of the resource set. Optionally, the ID of the resource set is used to indicate the activated resource set. Optionally, the resource set indicated by the third information may be the third set or the fourth set. Optionally, the resource set indicated by the third information is any one of the third set and the fourth set. Optionally, the UE uses / applies assumption of the reference signals in the third set and the fourth set. Optionally, after receiving the third information (e.g., MAC activation command), the UE uses / applies the assumption of the reference signals in the third set and the fourth set. Optionally, if a second condition is satisfied, the UE uses / applies the assumption of the reference signals in the third set and the fourth set. The second condition includes at least one of the followings: 1) the UE receives the third information; 2) the resource set indicated by the third information is the third set or the fourth set, or the resource set indicated by the third information is any one of the third set and the fourth set; 3) the third set and the fourth set are semi-persistent resource sets; 4) the fourth set is a subset of the third set. Optionally, the reference signal may be CSI-RS and / or SSB. This method can activate the third set and the fourth set by indication of a resource set, saving signaling overhead and improving the efficiency of the communication system.

[0317] In the disclosure, after receiving the third information includes: after the HARQ-ACK information corresponding to the PDSCH carrying the third information. Optionally, after receiving the third information includes: after an uplink channel, wherein the uplink channel carries HARQ-ACK information, and the HARQ-ACK information corresponds to the PDSCH carrying the third information.

[0318] Optionally, the assumption of the reference signal may be the assumption of the reference signal corresponding to the configured reference signal resource. Optionally, the assumption of the reference signal may be the assumption of the reference signal transmission corresponding to the configured reference signal resource. Optionally, the UE uses / applies the assumption of the reference signals in the set may be at least one of the followings: 1) the UE uses / applies the assumption of the reception of the reference signals in the set; 2) the UE uses / applies the assumption of the transmission of the reference signals in the set; 3) the UE assumes that the reference signals in the set are transmitted; 4) the UE assumes that the reference signals in the set are received; 5) the UE receives the reference signals in the set; 6) the UE receives on the transmission occasions of the reference signals in the set. Optionally, the assumption of the reference signals includes the QCL assumption. Optionally, the assumption of the reference signals includes the QCL assumption indicated by the third information.

[0319] Optionally, the assumption of the reference signals in the third set or the fourth set indicated by the third information may be applicable to the other set in the third set and the fourth set. For example, when the third information activates the third set, the assumption of the reference signals in the third set (indicated by the third information) may be applicable to the fourth set. For example, when the third information activates the third set, the fourth set is also activated by the third information. For example, when the third information indicates the QCL assumption of each resource in the third set, the reference signal resources associated with the fourth set also apply the QCL assumption indicated by the third information.

[0320] Optionally, the reference signal resources with the same ID in the third set and the fourth set have the same assumption (e.g., the same QCL assumption). Optionally, the resource in the fourth set with the same ID as the resource in the third set is applied with the corresponding assumption (for example, the same QCL assumption). Optionally, if the fourth set is a subset of the third set, the reference signal resources with the same ID in the third set and the fourth set have the same assumption (for example, the same QCL assumption). Optionally, if the fourth set is a subset of the third set, the resource in the fourth set with the same ID as the resource in the third set is applied with the corresponding assumption (for example, the same QCL assumption, or the corresponding QCL assumption).

[0321] The above method can implicitly indicate the resources in one resource set by indication of the resources in another resource set, saving the signaling overhead and improving the efficiency of the communication system.

[0322] Optionally, the resource set (e.g., the third set and / or the fourth set) may be deactivated by the third information. Optionally, the third information may include / indicate the ID of the resource set. Optionally, the ID of the resource set is used to indicate the deactivated resource set. Optionally, the resource set indicated by the third information may be the third set or the fourth set. Optionally, the resource set indicated by the third information is any one of the third set and the fourth set. Optionally, the UE uses / applies the assumption of the reference signals in the third set and the fourth set. Optionally, after receiving the third information (e.g., MAC activation command), the UE uses / applies the assumption of the reference signals in the third set and the fourth set. Optionally, if the second condition is satisfied, the UE uses / applies the assumption of the reference signals in the third set and the fourth set. The second condition includes at least one of the followings: 1) the UE receives the third information; 2) the resource set indicated by the third information is the third set or the fourth set, or the resource set indicated by the third information is any one of the third set and the fourth set; 3) the third set and the fourth set are semi-persistent resource sets; 4) the fourth set is a subset of the third set. Optionally, the reference signal may be CSI-RS and / or SSB. This method can deactivate the third set and the fourth set by indication of a resource set, saving signaling overhead and improving the efficiency of the communication system.

[0323] Optionally, the assumption of the reference signal may be the assumption of the reference signal corresponding to the configured reference signal resource. Optionally, the assumption of the reference signal may be the assumption of the transmission of the reference signal corresponding to the configured reference signal resource is stopped. Optionally, the UE uses / applies the assumption of the reference signals in the set may be at least one of the followings: 1) the UE uses / applies the assumption of stopping the reception of the reference signals in the set; 2) the UE uses / applies the assumption of stopping the transmission of the reference signals in the set; 3) the UE assumes that the transmission of the reference signals in the set is stopped; 4) the UE assumes that the reception of the reference signal in the set is stopped; 5) the UE stops receiving the reference signals in the set; 6) the UE stops receiving on the transmission occasions of the reference signals in the set. Optionally, the assumption of the reference signal includes the QCL assumption. Optionally, the assumption of the reference signals includes the QCL assumption indicated by the third information.

[0324] As the total computing resources of the UE are limited, it is necessary to specify / determine the computing resources needed by the UE during data collection, so that the base station may reasonably allocate the computing resources of the UE. In the disclosure, "computing resource" may be used interchangeably with at least one of "computing power", "occupied computing resource", "consumed computing resource", "CSI computing resource", "resources for AI / ML", "parallel computing resource for AI / ML", "computing resource and / or storage resource for AI / ML", "CSI processing unit (CPU)" or "the number of occupied CPUs". A method for determining the number of occupied CPUs (for example, OCPU) corresponding to the CSI reporting configuration is described below taking CPU as an example. Relevant definition of OCPUis described briefly below.

[0325] The UE indicates the number of supported simultaneous CSI calculations NCPUwith parameter simultaneousCSI-ReportsPerCC in a component carrier, and simultaneousCSI-ReportsAllCC across all component carriers.

[0326] If a UE supports NCPUsimultaneous CSI calculations it is said to have NCPUCSI processing units for processing CSI reports. If L CPUs are occupied for calculation of CSI reports in a given OFDM symbol, the UE has NCPU-L unoccupied CPUs.

[0327] If N CSI reports start occupying their respective CPUs on the same OFDM symbol on which NCPU-L CPUs are unoccupied, where each CSI report n=0, … ,N-1 corresponds to OCPU(n), the UE is not required to update the N-M requested CSI reports with lowest priority, where 0≤M≤N is the largest value such that holds. Processing of a CSI report (for example, CSI report corresponding to CSI reporting configuration) occupies a number of CPUs for a number of symbols.

[0328] In the disclosure, "the number (OCPU) of occupied CPUs corresponding to / associated with the CSI reporting configuration" may be used interchangeably with "the number (OCPU) of CPUs occupied by the CSI reporting configuration corresponding to / associated with the CSI reporting configuration".

[0329] Optionally, the number (OCPU) of occupied CPUs corresponding to / associated with the CSI reporting configuration is determined based on at least one of the followings: 1) the report quantity corresponding to the CSI reporting configuration; 2) whether the CSI reporting configuration is configured with the associated ID(s); 3) the resource type of the resource set associated with the CSI reporting configuration (for example, the resource type is one of periodic, semi-persistent and aperiodic); 4) the UE capability signaling; 5) the number of resource sets associated with the CSI reporting configuration; 6) the number of resources in the resource set associated with the CSI reporting configuration.

[0330] Optionally, OCPUcorresponding to the CSI reporting configuration may be determined based on the UE capability signaling. Optionally, when the sixth condition is satisfied, OCPUcorresponding to the CSI reporting configuration may be determined based on the UE capability signaling. For example, OCPUmay be indicated by the UE capability signaling. Optionally, the value of the UE capability signaling is one of 0, 1, 0.5, 2 / 3, 2, 3, 4, 5, 6, 7 and 8.

[0331] Optionally, OCPUcorresponding to the CSI reporting configuration may be determined based on the UE capability signaling. Optionally, when the seventh condition is satisfied, OCPUcorresponding to the CSI reporting configuration is predefined. For example, it OCPUis equal to one of 0, 1, 0.5, 2 / 3, 2, 3, 4, 5, 6, 7 and 8.

[0332] Optionally, OCPUcorresponding to the CSI reporting configuration may be predefined. Optionally, when the seventh condition is satisfied, OCPUcorresponding to the CSI reporting configuration is predefined. For example, OCPUis equal to one of 0, 1, 0.5, 2 / 3, 2, 3, 4, 5, 6, 7 and 8.

[0333] Optionally, OCPUcorresponding to the CSI reporting configuration correspondence may be determined based on the number of resource sets. Optionally, OCPUcorresponding to the CSI reporting configuration may be equal to the number of resource sets. Optionally, when the third set and the fourth set are configured, OCPUcorresponding to the CSI reporting configuration is 2*N. Optionally, when the third set is configured, OCPUcorresponding to the CSI reporting configuration is N. For example, N is equal to one of 0, 1, 0.5, 2 / 3, 2, 3, 4, 5, 6, 7 and 8.

[0334] The above provides the method for determining the occupied CPUs associated with the CSI reporting configuration. This method enables the base station and the UE to have the same understanding of the number of occupied CPUs corresponding to the CSI reporting configuration (for example, first CSI reporting configuration for data collection at the UE side), avoiding the UE from mistakenly dropping the CSI report due to incorrectly determination of the number of occupied CPUs, and improving the stability of the communication system. In some cases, the UE may receive (or be configured with) two CSI reporting configurations. Optionally, the two CSI reporting configurations are associated. For example, the two CSI reporting configurations may be associated by configuration information from the base station. For example, the UE may receive association information that associates the two CSI reporting configurations. For example, the association information indicates IDs of the two CSI reporting configurations. For example, a CSI reporting configuration may include a parameter indicating an associated CSI reporting configuration. Optionally, at least one CSI reporting configuration of the two CSI reporting configurations (or the CSI report corresponding to at least one CSI reporting configuration of the two CSI reporting configurations) may be used for data collection. Optionally, at least one CSI reporting configuration of the two CSI reporting configurations (or the CSI report corresponding to at least one CSI reporting configuration of the two CSI reporting configurations) may be used for the UE side model. Optionally, there may be no report corresponding to at least one CSI reporting configuration of the two CSI reporting configurations. For example, the report quantity parameter (for example, reportQuantity) in at least one of the two CSI reporting configurations is set to 'none'.

[0335] Optionally, the UE may measure the associated reference signal resource based on at least one CSI reporting configuration of the two CSI reporting configurations. Optionally, the reference signal resource associated with the CSI reporting configuration may be the reference signal resource in the resource set associated with / indicated by the CSI reporting configuration. Optionally, the CSI reporting configuration may be associated with / indicate / include a resource setting. Optionally, the resource setting may be indicated by the higher-layer parameter CSI-ResourceConfig. A resource setting may include configuration information of one or more resource sets. For example, the CSI reporting configuration may be associated with a resource setting, where the resource setting includes configuration information of the resource set. Optionally, the CSI reporting configuration may be associated with / indicate / include a resource set. For example, the CSI reporting configuration may be associated with one resource set, or the CSI reporting configuration may be associated with only one resource set. Optionally, the resource set may include one or more reference signal resources. Optionally, the resource set may be used for measurement. Optionally, the resource set may be used for channel measurement. Optionally, the resource set may be configured via the higher-layer parameter NZP-CSI-RS-ResourceSet. Optionally, the configuration information of the resource set includes a repetition parameter (for example, the repetition parameter is set to "off"). Optionally, the resource set is not configured with a TRS information parameter (with higher layer parameter trs-Info not configured).

[0336] Optionally, at least one CSI reporting configuration of the two CSI reporting configurations may be configured / indicated with the associated ID. Optionally, the CSI reporting configuration may be configured / indicated with an associated ID. For example, the associated ID is applicable to the resource set associated with the CSI reporting configuration. Optionally, the CSI reporting configuration may be configured / indicated with the associated ID.

[0337] Optionally, the two CSI reporting configurations are configured / indicated with the same associated ID. For example, the values of the configured / indicated associated IDs in the two CSI reporting configurations are the same. This method may allow the data collected by the two CSI reporting configurations related, improving the reliability of model training.

[0338] Optionally, OCPUof the CSI report corresponding to at least one CSI reporting configuration of the two CSI reporting configurations may be predefined. For example, OCPUis equal to one of 0, 1, 0.5, 2 / 3, 2, 3, 4, 5, 6, 7 and 8.

[0339] Optionally, OCPUof the CSI reports corresponding to the two CSI reporting configurations are the same. For example, the values of OCPUof the CSI reports corresponding to the two CSI reporting configurations are the same.

[0340] The above provides the method for data collection by associating two CSI reporting configurations. This method may allow the UE to collect data for training spatial domain prediction AI / ML model through different resource sets, improving the reliability of the model.

[0341] Embodiment 2

[0342] The UE receives (or is configured with) the CSI reporting configuration. Optionally, the CSI reporting configuration may be associated with / correspond to / include a third set.

[0343] - Optionally, the third set may be a set for channel measurement. Optionally, the third set may be a resource set for channel measurement and / or interference measurement. Optionally, the resource set may include one or more reference signal resources. For example, the third set includes K3 resources. Optionally, K3 > 1. Optionally, the reference signal resources may be SSB resources and / or CSI-RS resources. Optionally, the resource set may be resource set(s) indicated by the CSI resource configuration parameter (e.g., CSI-ResourceConfig). Optionally, the resource set may be indicated by the parameter (CSI-ResourceConfigId) in the CSI reporting configuration. Optionally, the resource set may include a CSI-RS resource set (for example, the resource set indicated by the parameterNZP-CSI-RS-ResourceSet). Optionally, the resource set may include an SSB resource set (for example, the resource set indicated by the parameterCSI-SSB-ResourceSet).

[0344] The UE determines and / or reports the CSI based on the CSI reporting configuration. Optionally, the CSI may include at least one of SSBRI, CRI, L1-RSRP and CapabilityIndex.

[0345] Optionally, the UE may report NNW(different) CRIs / SSBRIs. Optionally, the UE may report NNWdifferent predicted CRIs / SSBRIs in a report occasion. Optionally, NNWmay be predefined or indicated / configured by the base station (for example, configured by the CSI reporting configuration, or configured by the reported reference signal number parameter nrofReportedRS included in the CSI reporting configuration). Optionally, NNWmay be one of 1, 2, 4, 8, 16, 32 and 64. Optionally, NNWmay be any integer ranged from 1 to 64. Optionally, NNWmay be any integer ranged from 1 to 16. Optionally, NNWmay be any integer ranged from 1 to 8. Optionally, the UE may report L1-RSRP (e.g., measured L1-RSRP).

[0346] - Optionally, the UE may report the L1-RSRPs associated with / corresponding to the CRIs / SSBRIs (for example, the measured L1-RSRPs). Optionally, the UE may report the L1-RSRPs associated with / corresponding to each CRI / SSBRI (for example, the measured L1-RSRP). Optionally, the UE may report the L1-RSRPs associated with / corresponding to each CRI / SSBRI (for example, the measured L1-RSRP) in a report instance. Optionally, when the number of the reported CRIs / SSBRIs is greater than 1, the UE uses differential L1-RSRP-based reporting. Optionally, when NNW> 1, the UE uses differential L1-RSRP-based reporting. Optionally, the differential measured L1-RSRP (or the value of L1-RSRP) is determined / computed based on the largest measured L1-RSRP (or the value of L1-RSRP) in a report instance. For example, the differential measured L1-RSRP value is computed with a reference to the largest measured L1-RSRP value which is part of the same L1-RSRP reporting instance.

[0347] - Optionally, the quantization step of the largest (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station. Optionally, the quantization step may be greater than or equal to 1dB. Optionally, the quantization step may be one of 1dB, 2dB, 3dB and 4dB. Optionally, the quantization step may be n dB, where n is a positive integer. For example, n is determined based on the UE capability or indicated by the base station.

[0348] - Optionally, the quantization bit number (Q_abs) of the largest (predicted) L1-RSRP may be predefined or based on the UE capability. Optionally, the value of the largest (predicted) L1-RSRP may be quantized into Q_abs bits. Optionally, Q_abs may be predefined or based on the UE capability. Optionally, Q_abs≤7. For example, Q_abs=7. For example, Q_abs is indicated by the UE capability (for example, Q_abs is the value indicated by the UE capability signaling).

[0349] - Optionally, the quantization range of the largest (predicted) L1-RSRP is [-140, -44] dBm.

[0350] - Optionally, the quantization step of the differential (predicted) L1-RSRP may be predefined or based on the UE capability or configured by the base station. Optionally, the quantization step may be greater than or equal to 2dB. Optionally, the quantization step may be one of 2dB, 4dB, 6dB and 8dB. Optionally, the quantization step may be 2*n dB, where n is a positive integer. Optionally, the quantization step may be 1+n dB, where n is a positive integer. For example, n is determined based on the UE capability or indicated by the base station.

[0351] - Optionally, the quantization bit number (Q_diff) of the differential (predicted) L1-RSRP may be predefined or based on the UE capability. Optionally, the value of the differential (predicted) L1-RSRP may be quantized into Q_diff bits. Optionally, Q_diff may be predefined or based on the UE capability. For example, Q_diff = 4. For example, Q_diff is indicated by the UE capability (for example, Q_diff is the value indicated by the UE capability signaling).

[0352] The report of CapabilityIndex is discussed below. Optionally, whether the CSI includes the CapabilityIndex may be determined based on the indication of the base station (for example, based on the report quantity parameter reportQuantity included in the CSI reporting configuration). For example, when reportQuantity is set to 'cri-RSRP- Index' or 'ssb-Index-RSRP-Index', the CapabilityIndex is reported (for example, together with CRI / SSBRI and L1-RSRP).

[0353] - Optionally, the UE may report the CapabilityIndex associated with / corresponding to the CRIs / SSBRIs. Optionally, the UE may report the CapabilityIndex associated with / corresponding to each CRI / SSBRI. For example, the UE may report NNWCRIs / SSBRIs and NNWCapabilityIndex. Optionally, the CRIs / SSBRIs and CapabilityIndex are mapped / corresponded one to one. Optionally, NNWCapabilityIndex have the same value. Optionally, when NNW>4, NNWCapabilityIndex have the same value. Optionally, when NNW>4, all the CapabilityIndex in a CSI report instance have the same value. When a specific parameter (for example, the enable parameter) is configured, NNWCapabilityIndex have the same value. Optionally, when the specific parameter (e.g., the enable parameter) is configured, all the CapabilityIndex in a CSI report instance have the same value. Optionally, the specific parameter is indicated by the base station (for example, the specific parameter is configured by the CSI reporting configuration, or the specific parameter is indicated by the base station via Layer-1 signaling). This method may ensure that the CapabilityIndex corresponding to / associated with all the reported CRIs / SSBRIs in a report instance are the same, such that the base station may use these information to use the AI model (for example, the AI model without the capability to predict CapabilityIndex) for prediction.

[0354] - Optionally, the UE may report the CapabilityIndex in a report instance. Optionally, when NNW>4, the UE reports the CapabilityIndex in a report instance. Optionally, when the specific parameter (e.g., the enable parameter) is configured, the UE reports the CapabilityIndex in a report instance, for example, each / all of the CRIs / SSBRIs in the report instances is associated with the CapabilityIndex. Optionally, the CapabilityIndex associated with the CRI / SSBRI refers to the (measured) L1-RSRP corresponding to the CRI / SSBRI, or the (measured) L1-RSRP determined based on the CRI / SSBRI. Optionally, the specific parameter is indicated by the base station (for example, the specific parameter is configured by the CSI reporting configuration, or the specific parameter is indicated by the base station via Layer-1 signaling). The UE reporting only one CapabilityIndex in a report instance may save signaling overhead and improve the transmission efficiency of the communication system. This method may ensure that the CapabilityIndex corresponding to / associated with all the reported CRIs / SSBRIs in a report instance are the same, such that the base station may use these information to use the AI model (for example, for the AI model without the capability to predict CapabilityIndex) for prediction.

[0355] - Optionally, the value of the CapabilityIndex may be one of 1, 2 and 4. Optionally, the value of the CapabilityIndex may be one of 1, 2, 3 and 4.

[0356] The method of the UE reporting the CSI provided in Embodiment 2 enables the base station and the UE to have the same understanding of the CSI information, improving the reliability of the communication system.

[0357] FIG. 5 illustrates a method 500 performed by a base station according to various embodiments of the disclosure. The method 500 includes: at 501, the base station transmits a CSI reporting configuration to a user equipment, wherein the CSI reporting configuration is associated with a first set associated with prediction and a second set for channel measurement; at 502, the base station receives CSI associated with the first set from the user equipment, wherein the CSI associated with the first set is determined based on the channel measurement of resources in the second set and an ID order of the resources in the second set.

[0358] FIG. 6 illustrates a structure 600 of a user equipment according to various embodiments of the disclosure. As shown in FIG. 6, the user equipment 600 includes a controller 610 and a transceiver 620, wherein the controller 610 is configured to perform various methods disclosed herein and performed by the user equipment, and the transceiver 620 is configured to transmit and receive channels or signals.

[0359] FIG. 7 illustrates a structure 700 of a base station according to various embodiments of the disclosure. As shown in FIG. 7, the network device 700 includes a controller 710 and a transceiver 720, wherein the controller 710 is configured to perform various methods disclosed herein and performed by the network device, and the transceiver 720 is configured to transmit and receive channels or signals.

[0360] In an aspect of the present disclosure. A method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving a channel state information CSI reporting configuration, wherein the CSI reporting configuration configures a first set associated with prediction and a second set for channel measurement; and determining and / or reporting CSI associated with the first set based on channel measurement of resources in the second set and an order of IDs of the resources in the second set.

[0361] In an embodiment, wherein the second set includes K2 resources, and each of the K2 resources is associated with a precoding vector; the first set includes K1 resources or K1 vector identifications IDs for precoding, wherein the K1 resources and the K1 precoding vectors are in one-to-one correspondence, and K1 and K2 are integers greater than 1.

[0362] In an embodiment, the method further comprising: the UE does not perform measurement for the first set; or the UE determines whether to perform measurement for the first set based on the CSI reporting configuration or UE capability.

[0363] In an embodiment, wherein if the first set is a CSI reference signal CSI-RS resource set: the first set is configured with a repetition parameter, and the first set is not configured with a tracking reference signal TRS information parameter, and / or the first set is a periodic CSI-RS resource set.

[0364] In an embodiment, wherein each of the K1 resources has the same number of antenna ports, wherein the number of the antenna ports is 1 or 2.

[0365] In an embodiment, wherein the first set is associated with at least one of a number N1 of antenna ports in first dimension, a number N2 of antenna ports in second dimension, an oversampling factor O1 and an oversampling factor O2, wherein precoding vectors associated with the first set are determined based on at least one of N1, N2, O1 and O2 associated with the first set; and the second set is associated with at least one of N1, N2, O1 and O2, wherein the precoding vectors associated with the second set are determined based on at least one of N1, N2, O1 and O2 associated with the second set.

[0366] In an embodiment, wherein a mapping relationship between the vector identifications IDs for precoding included in the first set and the precoding vectors associated with the first set is predefined or configured by a base station, and a mapping relationship between the vector identifications IDs for precoding associated with the second set and the precoding vectors associated with the second set is predefined or configured by the base station.

[0367] In an embodiment, wherein when the CSI reporting configuration includes first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the resources in the second set are divided into N_predicted groups, where N_predicted is an integer greater than 1; wherein: the CSI is determined by the UE based on an assumption that the y-th resource of each of the N_predicted groups has an antenna port of the same index; and / or the CSI is determined by the UE based on the assumption that the y-th resource of each of the N_predicted groups has the same quasi-co-location QCL parameter.

[0368] In an embodiment, wherein when the CSI reporting configuration does not include first information for time domain prediction, reporting the CSI comprises: reporting N different predicted CSI-RS resource indicators CRIs and / or synchronization signal / physical broadcast channel SSB resource indicators SSBRIs in a report occasion, wherein the predicted CRIs and / or SSBRIs are determined based on resources in the first set; or reporting N different predicted precoder vector indicators PVIs in a report occasion, wherein the predicted PVIs are determined based on the vector identifications IDs for precoding included in the first set, wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1.

[0369] In an embodiment, wherein when the CSI reporting configuration includes first information for time domain prediction, reporting the CSI comprises: reporting predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted CRIs and / or SSBRIs, and the predicted CRIs and / or SSBRIs are determined based on resources in the first set; or reporting the predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted PVIs, and the predicted PVIs are determined based on the IDs of the precoding vectors associated with the first set, wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1, and F is determined based on the first information and is an integer greater than or equal to 1.

[0370] In an embodiment, the method further comprising: reporting an index of a UE capability value set in a report occasion, and the index of the UE capability value set is associated with all CSIs reported in the report occasion; or reporting indexes of UE capability value sets associated with each CSI in a report occasion, wherein the indexes of UE capability value sets associated with each CSI are the same.

[0371] In an embodiment, wherein if a time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "not configured", the channel measurement for computing predicted CSI and / or predicted layer 1-reference signal received power L1-RSRP corresponding to the predicted CSI are determined based on an occasion of each reference signal in the second set no later than a CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration does not include first information for time domain prediction, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; or if the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is a semi-persistent CSI-RS resource set or a periodic CSI-RS resource set or an SSB resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest K_case2 consecutive occasion of the reference signal in the second set no later than the CSI reference resource, wherein K_case2 is predefined or determined based on UE capability.

[0372] In an embodiment, wherein: if the CSI reporting configuration includes the first information for time domain prediction, the UE ignores the time restriction parameter for channel measurement configured by the CSI reporting configuration; or if the CSI reporting configuration includes the first information for time domain prediction, the UE expects that the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured".

[0373] In an embodiment, the method further comprising: reporting information associated with UE capability, wherein the information associated with UE capability indicates the maximum total number of resources for prediction supported in a slot, and a first resource associated with the first set and / or the second set is counted based on the first set and / or the second set for the information associated with UE capability.

[0374] In an embodiment, wherein for the CSI reporting configuration, the first resource is counted based on one of the followings: if the first resource is in the second set, the first resource is counted once or Z times; if the first resource is in the first set and the first set is measured, the first resource is counted once; if the first resource is in the first set and the first set is not measured, the first resource is not counted; if the first resource is in the first set and the first resource is in the second set and the first set is measured, the first resource is counted twice or Z+1 times; if the first resource is in the first set and the first resource is in the second set and the first set is not measured, the first resource is counted once or Z times, where Z is determined based on the UE capability and Z is an integer greater than or equal to 0.

[0375] In addition, "at least one item / at least one" described in this disclosure includes any and / or all possible combinations of listed items, and various embodiments and examples in embodiments described in this disclosure can be changed and combined in any suitable form, and " / " described in this disclosure means "and / or".

[0376] The illustrative logical blocks, modules, and circuits described in this disclosure may be implemented in a general-purpose processor a Digital Signal Processor (DSP), an application specific integrated circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but in the alternative, the processor may be any conventional processor controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor a plurality of microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0377] The steps of a method or algorithm described in this disclosure may be embodied directly in hardware, in a software module executed by a processor or in a combination of the two. Software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, or any other form of storage media known in the art. An exemplary storage medium is coupled to a processor to enable the processor to read and write information from / to the storage medium. In the alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in the user terminal. In the alternative, the processor and the storage medium may reside as separate components in the user terminal.

[0378] In one or more exemplary designs, the described functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, each function can be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, and the latter includes any media that facilitates the transfer of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0379] The description set forth herein, taken in conjunction with the drawings, describes example configurations, methods and devices, and does not represent all examples that can be realized or are within the scope of the claims. As used herein, the term "example" means "serving as an example, instance or illustration" rather than "preferred" or "superior to other examples". The detailed description includes specific details in order to provide an understanding of the described technology. However, these techniques may be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0380] Although this specification contains many specific implementation details, these should not be interpreted as limitations on any invention or the scope of the claimed protection, but as descriptions of specific features of specific embodiments of specific inventions. Some features described in this specification in the context of separate embodiments can also be combined in a single embodiment. On the contrary, various features described in the context of a single embodiment can also be implemented separately in multiple embodiments or in any suitable sub-combination. Furthermore, although features may be described above as functioning in certain combinations, and even initially claimed as such, in some cases, one or more features from the claimed combination may be deleted from the combination, and the claimed combination may be directed to a subcombination or a variation of a subcombination.

[0381] It should be understood that the specific order or hierarchy of steps in the method of the disclosure is illustrative of an exemplary process. Based on design preferences, it can be understood that a specific order or hierarchy of steps in a method can be rearranged to achieve the functions and effects disclosed in this disclosure. The appended method claims present elements of various steps in an example order, and are not meant to be limited to the particular order or hierarchy presented, unless otherwise specifically stated. Furthermore, although elements may be described or claimed in the singular, the plural is also contemplated unless the limitation on the singular is explicitly stated. Therefore, the disclosure is not limited to the illustrated examples, and any means for performing the functions described herein are included in various aspects of the disclosure.

[0382] The text and drawings are provided as examples only to help readers understand the disclosure. They are not intended and should not be interpreted as limiting the scope of the disclosure in any way. Although certain embodiments and examples have been provided, based on the content disclosed herein, it is obvious to those skilled in the art that modifications to the illustrated embodiments and examples can be made without departing from the scope of the disclosure.

Claims

1.A method performed by a user equipment (UE) in a wireless communication system, the method comprising:receiving a channel state information CSI reporting configuration, wherein the CSI reporting configuration configures a first set associated with prediction and a second set for channel measurement; anddetermining and / or reporting CSI associated with the first set based on channel measurement of resources in the second set and an order of IDs of the resources in the second set.2.The method of claim 1, whereinthe second set includes K2 resources, and each of the K2 resources is associated with a precoding vector; the first set includes K1 resources or K1 vector identifications IDs for precoding, wherein the K1 resources and the K1 precoding vectors are in one-to-one correspondence, and K1 and K2 are integers greater than 1.3.The method of claim 2, further comprising:the UE does not perform measurement for the first set; orthe UE determines whether to perform measurement for the first set based on the CSI reporting configuration or UE capability.4.The method of claim 2, wherein if the first set is a CSI reference signal CSI-RS resource set:the first set is configured with a repetition parameter, and the first set is not configured with a tracking reference signal TRS information parameter, and / orthe first set is a periodic CSI-RS resource set.5.The method of claim 4, wherein each of the K1 resources has the same number of antenna ports, wherein the number of the antenna ports is 1 or 2.6.The method of claim 1, whereinthe first set is associated with at least one of a number N1of antenna ports in first dimension, a number N2of antenna ports in second dimension, an oversampling factor O1and an oversampling factor O2, wherein precoding vectors associated with the first set are determined based on at least one of N1, N2, O1and O2associated with the first set; andthe second set is associated with at least one of N1, N2, O1and O2, wherein the precoding vectors associated with the second set are determined based on at least one of N1, N2, O1and O2associated with the second set.7.The method of claim 2, wherein a mapping relationship between the vector identifications IDs for precoding included in the first set and the precoding vectors associated with the first set is predefined or configured by a base station, and a mapping relationship between the vector identifications IDs for precoding associated with the second set and the precoding vectors associated with the second set is predefined or configured by the base station.8.The method of claim 1, wherein when the CSI reporting configuration includes first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the resources in the second set are divided into N_predicted groups, where N_predicted is an integer greater than 1; wherein:the CSI is determined by the UE based on an assumption that the y-th resource of each of the N_predicted groups has an antenna port of the same index; and / orthe CSI is determined by the UE based on the assumption that the y-th resource of each of the N_predicted groups has the same quasi-co-location QCL parameter.9.The method of claim 2, wherein when the CSI reporting configuration does not include first information for time domain prediction, reporting the CSI comprises:reporting N different predicted CSI-RS resource indicators CRIs and / or synchronization signal / physical broadcast channel SSB resource indicators SSBRIs in a report occasion, wherein the predicted CRIs and / or SSBRIs are determined based on resources in the first set; orreporting N different predicted precoder vector indicators PVIs in a report occasion, wherein the predicted PVIs are determined based on the vector identifications IDs for precoding included in the first set,wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1.10.The method of claim 2, wherein when the CSI reporting configuration includes first information for time domain prediction, reporting the CSI comprises:reporting predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted CRIs and / or SSBRIs, and the predicted CRIs and / or SSBRIs are determined based on resources in the first set; orreporting the predicted CRIs and / or SSBRIs for F time instances in a report occasion, wherein each time instance is associated with N different predicted PVIs, and the predicted PVIs are determined based on the IDs of the precoding vectors associated with the first set,wherein N is configured by the CSI reporting configuration and is an integer greater than or equal to 1, and F is determined based on the first information and is an integer greater than or equal to 1.11.The method of claim 9 or claim 10, further comprising:reporting an index of a UE capability value set in a report occasion, and the index of the UE capability value set is associated with all CSIs reported in the report occasion; orreporting indexes of UE capability value sets associated with each CSI in a report occasion, wherein the indexes of UE capability value sets associated with each CSI are the same.12.The method of claim 1, whereinif a time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "not configured", the channel measurement for computing predicted CSI and / or predicted layer 1-reference signal received power L1-RSRP corresponding to the predicted CSI are determined based on an occasion of each reference signal in the second set no later than a CSI reference resource; orif the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration does not include first information for time domain prediction, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; orif the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is an aperiodic CSI-RS resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest occasion of each reference signal in the second set no later than the CSI reference resource; orif the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured" and the CSI reporting configuration includes the first information for time domain prediction and the second set is a semi-persistent CSI-RS resource set or a periodic CSI-RS resource set or an SSB resource set, the channel measurement for computing the predicted CSI and / or the predicted L1-RSRP corresponding to the predicted CSI are determined based on the latest K_case2 consecutive occasion of the reference signal in the second set no later than the CSI reference resource, wherein K_case2 is predefined or determined based on UE capability.13.The method of claim 12, wherein:if the CSI reporting configuration includes the first information for time domain prediction, the UE ignores the time restriction parameter for channel measurement configured by the CSI reporting configuration; orif the CSI reporting configuration includes the first information for time domain prediction, the UE expects that the time restriction parameter for channel measurement configured by the CSI reporting configuration is set to "configured".14.The method of claim 2, further comprising:reporting information associated with UE capability, wherein the information associated with UE capability indicates the maximum total number of resources for prediction supported in a slot, and a first resource associated with the first set and / or the second set is counted based on the first set and / or the second set for the information associated with UE capability.15.The method of claim 14, wherein for the CSI reporting configuration, the first resource is counted based on one of the followings:if the first resource is in the second set, the first resource is counted once or Z times;if the first resource is in the first set and the first set is measured, the first resource is counted once;if the first resource is in the first set and the first set is not measured, the first resource is not counted;if the first resource is in the first set and the first resource is in the second set and the first set is measured, the first resource is counted twice or Z+1 times;if the first resource is in the first set and the first resource is in the second set and the first set is not measured, the first resource is counted once or Z times,where Z is determined based on the UE capability and Z is an integer greater than or equal to 0.

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