Method and apparatus for receiving and transmitting information

Abstract

The present disclosure provides a method executed by a UE in a wireless communication system, the method comprising: receiving a first CSI reporting configuration and a second CSI reporting configuration for LTM, the first CSI reporting configuration comprising configuration information for a resource set, the configuration information for the resource set indicating K CSI-RS resource IDs and K LTM candidate configuration IDs, and the second CSI reporting configuration comprising the configuration information for the resource set indicating the K CSI-RS resource IDs and the K LTM candidate configuration IDs; the first CSI reporting configuration further comprises first configuration information of L candidate cells, and L is equal to the number of the LTM candidate configuration IDs after repeated IDs in the K LTM candidate configuration IDs are removed; and reporting the CSI of N candidate cells in the L candidate cells based on the first CSI reporting configuration, or determining whether to report the CSI report corresponding to the first CSI reporting configuration based on the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration, or discarding the CSI report corresponding to the first CSI reporting configuration when the L candidate cells are the current special cells.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and more specifically, to methods and apparatus for receiving and transmitting information. Background Technology

[0002] To meet the increased demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or near-5G communication systems. Therefore, 5G or near-5G communication systems are also referred to as "super 4G networks" or "post-LTE systems".

[0003] 5G communication systems are implemented in higher frequency (millimeter wave, mmWave) bands, such as the 60GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and massive MIMO technologies are discussed in 5G communication systems.

[0004] In addition, in 5G communication systems, development is underway to improve system networks based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, cooperative multipoint (CoMP), and receiver interference cancellation.

[0005] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) have been developed as advanced coding and modulation (ACM), while filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) have been developed as advanced access technologies. Summary of the Invention

[0006] Technical issues

[0007] To enhance the scheduling efficiency of 5G wireless communication systems, base stations need to acquire Channel State Information (CSI) to perform scheduling based on the CSI feedback from terminal devices. However, how to further improve the performance of CSI reporting remains an unresolved issue.

[0008] Technical solutions

[0009] One aspect of this disclosure provides a method performed by a user equipment (UE) in a wireless communication system. The method includes: receiving a first Channel State Information (CSI) reporting configuration and a second CSI reporting configuration for a Layer 1 / Layer 2 triggered Mobility LTM. The first CSI reporting configuration includes configuration information for a resource set used for channel measurement. This configuration information indicates K CSI Reference Signal (CSI-RS) resource identifiers (IDs) and K LTM candidate configuration IDs, where K ≥ 1. The k-th CSI-RS resource ID is associated with the k-th LTM candidate configuration ID, where 1 ≤ k ≤ K. The first CSI reporting configuration further includes first configuration information for L candidate cells. Each of the L first configuration information indicates at least one of a codebook parameter, a port indication for non-precoding matrix indicator (PMI) feedback, and a frequency domain configuration parameter. L is equal to the number of L candidate LTM configuration IDs. The number of LTM candidate configuration IDs after removing duplicate IDs, wherein the LTM candidate configuration ID of the i-th candidate cell among the L candidate cells is the i-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs, where 1≤i≤L; based on the first CSI reporting configuration, report the CSI of N candidate cells among the L candidate cells, 1≤N≤L, or, determine whether to report the CSI report corresponding to the first CSI reporting configuration based on the candidate cell corresponding to the resource indicator indicated by the CSI reporting corresponding to the second CSI reporting configuration, or, when the L candidate cells are the current special cells, discard the CSI report corresponding to the first CSI reporting configuration; wherein the N candidate cells are determined based on at least one of the following: the value of the Channel Quality Indicator (CQI) of the L candidate cells; the candidate cell corresponding to the resource indicator indicated by the CSI reporting corresponding to the second CSI reporting configuration; whether the N candidate cells exclude the current special cells.

[0010] In one example, among the L LTM candidate configuration IDs after removing duplicate IDs from the K LTM candidate configuration IDs, the j-th LTM candidate configuration ID is less than the (j+1)-th LTM candidate configuration ID, where 1≤j≤L-1.

[0011] In one example, the CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is determined based on the LTM candidate configuration ID of the i-th candidate cell.

[0012] In one example, the CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is one or more CSI-RS resources among the K CSI-RS resources whose associated LTM candidate configuration ID is the same as the LTM candidate configuration ID of the i-th candidate cell.

[0013] In one example, N is determined by at least one of the following methods: N is indicated by the first CSI reporting configuration; N is indicated by the trigger state corresponding to the first CSI reporting configuration indicated by the Media Access Control Element MAC-CE or Downlink Control Information DCI; N is determined by the UE.

[0014] In one example, the CSI report corresponding to the second CSI reporting configuration also includes the Layer 1-Reference Signal Received Power (L1-RSRP) corresponding to the resource indicator, and the CSI report corresponding to the second CSI reporting configuration is the most recent CSI report prior to the report carrying the CSIs of N candidate cells among the L candidate cells.

[0015] In one example, the method further includes: when the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration is different from the L candidate cells, discarding the report carrying the CSI of the N candidate cells among the L candidate cells.

[0016] In one example, the method further includes: when the L candidate cells are the current special cells and the CSI report corresponding to the first CSI reporting configuration is a periodic CSI report, discarding the CSI report corresponding to the first CSI reporting configuration.

[0017] In one example, whether the N candidate cells exclude the current special cell is indicated by the first CSI reporting configuration, and wherein, when the N candidate cells exclude the current special cell, the N candidate cells are N candidate cells among the L-1 cells that do not correspond to the current special cell.

[0018] In one example, the CSI of each of the N candidate cells includes K rep Group CSI, wherein the K rep Each group of CSIs includes at least one of the following: CSI-RS resource indicator CRI, PMI, rank indicator RI, CQI, and tier indicator LI, and wherein K rep =1, and / or, K rep It is indicated by the first configuration information corresponding to each candidate cell, and / or, K rep It is the configuration instruction reported by the first CSI.

[0019] In one example, the K rep sets of CSI corresponding CSI-RS resources are determined based on at least one of the following: the value of the CQI corresponding to the CSI-RS resource; the resource corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration.

[0020] In one example, when the N candidate cells do not exclude the current special cell: when N = L and / or K1 > 1, the value k1 of the CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)-th CSI-RS resource corresponding to the nth candidate cell, 0 ≤ k1 ≤ K1 - 1, 1 ≤ n ≤ N; or, when N = L and / or K1 = 1, the CSI of the N candidate cells does not include a CRI; or, when N < L, the value k2 of the CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)-th CSI-RS resource in the resource set configured by the configuration information of the resource set for channel measurement, 0 ≤ k2 ≤ K - 1, where K1 is the number of CSI-RS resources corresponding to the nth candidate cell.

[0021] In one example, when the N candidate cells exclude the current special cell: when N = L and / or K1 > 1, the value k1 of the CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)-th CSI-RS resource corresponding to the nth candidate cell, 0 ≤ k1 ≤ K1 - 1, 1 ≤ n ≤ N; or, when N = L - 1 and / or K1 = 1, the CSI of the N candidate cells does not include a CRI; or, when N < L - 1, the value k2 of the CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)-th CSI-RS resource in the resource set configured by the configuration information of the resource set for channel measurement, 0 ≤ k2 ≤ K - 1, where K1 is the number of CSI-RS resources corresponding to the nth candidate cell.

[0022] In one example, the mapping order of the CSI of the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is the current special cell.

[0023] In one example, if the N candidate cells include candidate cells corresponding to the current special cell, then the CSIs of candidate cells that do not correspond to the current special cell are prioritized over the CSIs of candidate cells that correspond to the current special cell in the N candidate cells, and the mapping order of the CSIs of candidate cells that do not correspond to the current special cell is determined based on the ascending order of the LTM candidate configuration IDs corresponding to the N candidate cells; or, if the N candidate cells do not include candidate cells corresponding to the current special cell, then the mapping order of the CSIs of the N candidate cells is determined based on the ascending order of the LTM candidate configuration IDs corresponding to the N candidate cells.

[0024] In one example, the CSI ignoring of the N candidate cells is performed at the candidate cell level, and the priority of the CSI of the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is a current special cell.

[0025] In one example, if the N candidate cells include candidate cells corresponding to the current special cell, then the priority of the CSI of the candidate cell corresponding to the current special cell is lower than the priority of the candidate cell corresponding to the CSI of a non-current special cell. Furthermore, the priority of the CSI of the candidate cell not corresponding to the current special cell is determined based on the ascending order of the LTM candidate configuration ID values ​​corresponding to the N candidate cells. Alternatively, if the N candidate cells do not include candidate cells corresponding to the current special cell, then the priority of the CSI of the N candidate cells is determined based on the ascending order of the LTM candidate configuration ID values ​​corresponding to the N candidate cells.

[0026] In one example, the number of CSI processing unit CPUs occupied by the CSI reporting configuration corresponding to the first CSI reporting configuration is the sum of the number of reference signal resources corresponding to each of the N candidate cells.

[0027] Another aspect of this disclosure provides a method performed by a base station in a wireless communication system, the method comprising: transmitting a first Channel State Information (CSI) reporting configuration and a second CSI reporting configuration for a Layer 1 / Layer 2 triggered Mobility LTM, wherein the first CSI reporting configuration includes configuration information for a resource set for channel measurement, the configuration information for the resource set for channel measurement indicating K CSI Reference Signal (CSI-RS) Resource Identifiers (IDs) and K LTM Candidate Configuration IDs, K ≥ 1, wherein the k-th CSI-RS Resource ID among the K CSI-RS Resource IDs is associated with the k-th LTM Candidate Configuration ID among the K LTM Candidate Configuration IDs, 1 ≤ k ≤ K, the first CSI reporting configuration further comprising first configuration information for L candidate cells, wherein each of the L first configuration information indicates codebook parameters, At least one of the port indication and frequency domain configuration parameters used for non-precoding matrix indicator (PMI) feedback, where L is equal to the number of LTM candidate configuration IDs after removing duplicate IDs from the K LTM candidate configuration IDs, and the LTM candidate configuration ID of the i-th candidate cell among the L candidate cells is the i-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs, where 1 ≤ i ≤ L; receiving CSI reports from N candidate cells among the L candidate cells based on the first CSI reporting configuration, where 1 ≤ N ≤ L; wherein the N candidate cells are determined based on at least one of the following: the value of the Channel Quality Indicator (CQI) of the L candidate cells; the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration; and whether the N candidate cells exclude the current special cell.

[0028] In one example, among the L LTM candidate configuration IDs after removing duplicate IDs from the K LTM candidate configuration IDs, the j-th LTM candidate configuration ID is less than the (j+1)-th LTM candidate configuration ID, where 1≤j≤L-1.

[0029] In one example, the CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is determined based on the LTM candidate configuration ID of the i-th candidate cell.

[0030] In one example, the CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is one or more CSI-RS resources among the K CSI-RS resources whose associated LTM candidate configuration ID is the same as the LTM candidate configuration ID of the i-th candidate cell.

[0031] In one example, N is determined by at least one of the following methods: N is indicated by the first CSI reporting configuration; N is indicated by the trigger state corresponding to the first CSI reporting configuration indicated by the Media Access Control Element MAC-CE or Downlink Control Information DCI; N is determined by the UE.

[0032] In one example, the CSI report corresponding to the second CSI reporting configuration also includes the Layer 1-Reference Signal Received Power (L1-RSRP) corresponding to the resource indicator, and the CSI report corresponding to the second CSI reporting configuration is the most recent CSI report prior to the report carrying the CSIs of N candidate cells among the L candidate cells.

[0033] In one example, when the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration is different from the L candidate cells, the report carrying the CSI of the N candidate cells among the L candidate cells is discarded.

[0034] In one example, when the L candidate cells are the current special cells and the CSI report corresponding to the first CSI reporting configuration is a periodic CSI report, the CSI report corresponding to the first CSI reporting configuration is discarded.

[0035] In one example, whether the N candidate cells exclude the current special cell is indicated by the first CSI reporting configuration, and wherein, when the N candidate cells exclude the current special cell, the N candidate cells are N candidate cells among the L-1 cells that do not correspond to the current special cell.

[0036] In one example, the CSI of each of the N candidate cells includes K rep Group CSI, wherein the K rep Each group of CSIs includes at least one of the following: CSI-RS resource indicator CRI, PMI, rank indicator RI, CQI, and tier indicator LI, and wherein K rep =1, and / or, K rep It is indicated by the first configuration information corresponding to each candidate cell, and / or, K rep It is the configuration instruction reported by the first CSI.

[0037] In one example, the K rep The CSI-RS resource corresponding to the group CSI is determined based on at least one of the following: the CQI value corresponding to the CSI-RS resource; the resource corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration.

[0038] In one example, when the N candidate cells do not exclude the current special cell: when N = L and / or K1 > 1, the value k1 of CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)th CSI-RS resource corresponding to the nth candidate cell, where 0 ≤ k1 ≤ K1 - 1 and 1 ≤ n ≤ N; or, when N = L and / or K1 = 1, the CRI is not included in the CSI of the N candidate cells; or, when N < L, the value k2 of CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)th CSI-RS resource in the resource set configured by the configuration information of the resource set for channel measurement, where 0 ≤ k2 ≤ K - 1, and K1 is the number of CSI-RS resources corresponding to the nth candidate cell.

[0039] In one example, when the N candidate cells exclude the current special cell: when N = L and / or K1 > 1, the value k1 of CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)th CSI-RS resource corresponding to the nth candidate cell, where 0 ≤ k1 ≤ K1 - 1 and 1 ≤ n ≤ N; or, when N = L - 1 and / or K1 = 1, the CRI is not included in the CSI of the N candidate cells; or, when N < L - 1, the value k2 of CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)th CSI-RS resource in the resource set configured by the configuration information of the resource set for channel measurement, where 0 ≤ k2 ≤ K - 1, and K1 is the number of CSI-RS resources corresponding to the nth candidate cell.

[0040] In one example, the mapping order of the CSI of the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is the current special cell.

[0041] In one example, if the N candidate cells include a candidate cell corresponding to the current special cell, then the CSI of the candidate cells among the N candidate cells that do not correspond to the current special cell is before the CSI of the candidate cells among the N candidate cells that correspond to the current special cell, and the mapping order of the CSI of the candidate cells among the N candidate cells that do not correspond to the current special cell is determined based on the ascending order of the values of the LTM candidate configuration IDs corresponding to the N candidate cells; or, if the N candidate cells do not include a candidate cell corresponding to the current special cell, then the mapping order of the CSI of the N candidate cells is determined based on the ascending order of the values of the LTM candidate configuration IDs corresponding to the N candidate cells.

[0042] In one example, the CSI ignoring of the N candidate cells is performed at the candidate cell level, and the priority of the CSI of the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is a current special cell.

[0043] In one example, if the N candidate cells include candidate cells corresponding to the current special cell, then the priority of the CSI of the candidate cell corresponding to the current special cell is lower than the priority of the candidate cell corresponding to the CSI of a non-current special cell. Furthermore, the priority of the CSI of the candidate cell not corresponding to the current special cell is determined based on the ascending order of the LTM candidate configuration ID values ​​corresponding to the N candidate cells. Alternatively, if the N candidate cells do not include candidate cells corresponding to the current special cell, then the priority of the CSI of the N candidate cells is determined based on the ascending order of the LTM candidate configuration ID values ​​corresponding to the N candidate cells.

[0044] In one example, the number of CSI processing unit CPUs occupied by the CSI reporting configuration corresponding to the first CSI reporting configuration is the sum of the number of reference signal resources corresponding to each of the N candidate cells.

[0045] Another aspect of this disclosure provides a user equipment including: a transceiver; and a controller coupled to the transceiver and configured to perform the methods described above that can be performed by the user equipment.

[0046] Another aspect of this disclosure provides a base station, including: a transceiver; and a controller coupled to the transceiver and configured to perform the methods described above that can be performed by the controller.

[0047] Beneficial effects of the invention

[0048] The method proposed in this application improves the performance of CSI, thereby enhancing the scheduling efficiency of the communication system. Attached Figure Description

[0049] The above and other aspects, features and advantages of this disclosure will become clearer when taken in conjunction with the accompanying drawings and the following detailed description.

[0050] Figure 1 The overall structure of an example wireless communication network according to various embodiments of the present disclosure is shown;

[0051] Figure 2a and Figure 2b Transmitting path 200 and receiving path 250 in a wireless communication network according to various embodiments of the present disclosure are shown respectively;

[0052] Figure 3a and Figure 3b The structures of user equipment (UE) and base stations in wireless communication networks according to various embodiments of the present disclosure are shown respectively;

[0053] Figure 4 Method 400 performed by a user equipment (UE) according to various embodiments of the present disclosure is illustrated;

[0054] Figure 5 A method 500 performed by a base station according to various embodiments of the present disclosure is shown;

[0055] Figure 6 The structure 600 of a user equipment according to various embodiments of the present disclosure is shown;

[0056] Figure 7 The structure 700 of a base station according to various embodiments of the present disclosure is shown. Detailed Implementation

[0057] The following description, with reference to the accompanying drawings, is provided to aid in a thorough understanding of the various embodiments of this disclosure as defined by the claims and their equivalents. This description includes various specific details to aid understanding but should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of this disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures may be omitted.

[0058] The terms and wording used in the following description and claims are not limited to their dictionary meanings, but are merely used by the inventors to enable a clear and consistent understanding of this disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this disclosure is for illustrative purposes only and not for limiting the purpose of this disclosure as defined in the appended claims and their equivalents.

[0059] It should be understood that the singular forms of “one,” “an,” and “the” include plural references unless the context clearly indicates otherwise. Thus, for example, the reference to “component surface” includes one or more such surfaces.

[0060] The terms “comprising” or “may include” refer to the presence of a corresponding disclosed function, operation, or component that may be used in the various embodiments of this disclosure, rather than limiting the presence of one or more additional functions, operations, or features. Furthermore, the terms “comprising” or “having” may be interpreted as indicating certain characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof, but should not be construed as excluding the possibility of the presence of one or more other characteristics, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0061] The term "or" as used in the various embodiments of this disclosure includes any of the listed terms and all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0062] Unless otherwise defined, all terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of those skilled in the art as described herein. Common terms as defined in dictionaries are to be interpreted as having a meaning consistent with the context in the relevant technical field and should not be interpreted ideally or overly formally unless expressly defined in this disclosure.

[0063] The various embodiments of this disclosure can be applied to various communication systems, such as: Global System for Mobile Communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), Long Term Evolution (LTE) systems, Frequency Division Duplex (FDD) systems, Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, 5th Generation (5G) systems, or New Radio (NR), etc. Furthermore, the various embodiments of this disclosure can be applied to future-oriented communication technologies.

[0064] Figure 1An example wireless network 100 according to various embodiments of the present disclosure is shown. Figure 1 The embodiment of the wireless network 100 shown is for illustrative purposes only. Other embodiments of the wireless network 100 can be used without departing from the scope of this disclosure.

[0065] Wireless network 100 includes gNodeB (gNB) 101, gNB 102, and 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 proprietary IP network, or other data network).

[0066] Depending on the network type, 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. Furthermore, depending on the network type, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal", or "user device" 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, whether the UE is a mobile device (such as a mobile phone or smartphone) or a fixed device as commonly understood (such as a desktop computer or vending machine).

[0067] gNB 102 provides wireless broadband access to network 130 to multiple first user equipments (UEs) within its coverage area 120. The multiple first UEs include: UE 111, which may be located in a small business (SB); UE 112, which may be located in an enterprise (E); UE 113, which may be located in a WiFi hotspot (HS); UE 114, which may be located in a first residence (R); UE 115, which may be located in a second residence (R); and UE 116, which may be a mobile device (M), such as a cellular phone, wireless laptop computer, wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 to multiple second UEs within its coverage area 125. The multiple second UEs include UE 115 and UE 116. In some embodiments, one or more of gNBs 101-103 are capable of communicating with each other and with UEs 111-116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0068] The dashed lines indicate the approximate extent of coverage areas 120 and 125, which are shown as approximately circular for illustrative and explanatory purposes only. It should be clearly understood that coverage areas associated with the gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0069] As 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 this disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook design and architecture for systems having 2D antenna arrays.

[0070] although Figure 1 An example of a wireless network 100 is shown, but it is possible to... Figure 1 Various modifications can be made. For example, wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Furthermore, gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 can communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 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).

[0071] Figure 2a and Figure 2b Example wireless transmit and receive paths according to this disclosure are shown. In the following description, transmit path 200 can be described as being implemented in a gNB (such as gNB 102), while receive path 250 can be described as being implemented in a UE (such as UE 116). However, it should be understood that receive path 250 can be implemented in a gNB, and transmit path 200 can be implemented in a UE. In some embodiments, receive path 250 is configured to support codebook design and structure for a system having a 2D antenna array as described in embodiments of this disclosure.

[0072] The transmit path 200 includes a channel coding and modulation block 205, a serial-to-parallel (S-to-P) block 210, an N-point 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 receive path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a serial-to-parallel (S-to-P) block 265, an N-point fast Fourier transform (FFT) block 270, a parallel-to-serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0073] In transmit path 200, 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. Serial-to-parallel (S-to-P) block 210 converts (e.g., demultiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the number of IFFT / FFT points used in gNB 102 and UE 116. N-point IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time-domain output signal. Parallel-to-serial block 220 converts (e.g., multiplexes) the parallel time-domain output symbols from N-point IFFT block 215 to generate a serial time-domain signal. Cyclic prefix addition block 225 inserts a cyclic prefix into the time-domain signal. Upconverter 230 modulates (e.g., upconverts) the output of the added cyclic prefix block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at the baseband before being converted to the RF frequency.

[0074] The RF signal transmitted from gNB 102 reaches UE 116 after passing through the wireless channel, and UE 116 performs the opposite operation to that at gNB 102. Downconverter 255 downconverts the received signal to the baseband frequency, and cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 265 converts the time-domain baseband signal into a parallel time-domain signal. N-point FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0075] Each of gNBs 101-103 can implement a transmission path 200 similar to that used for transmission to UEs 111-116 in the downlink, and a reception path 250 similar to that used for reception from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 can implement a transmission path 200 for transmission to gNBs 101-103 in the uplink, and a reception path 250 for reception from gNBs 101-103 in the downlink.

[0076] Figure 2a and Figure 2b Each of the components can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, Figure 2a and Figure 2b At least some of the components can be implemented in software, while others can be implemented in configurable hardware or a combination of software and configurable hardware. For example, FFT block 270 and IFFT block 215 can be implemented as configurable software algorithms, wherein the value of the number of points N can be modified according to the implementation method.

[0077] Furthermore, although the description uses FFT and IFFT, this is merely illustrative and should not be construed as limiting the scope of this disclosure. Other types of transforms, such as the Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions, can be used. It should be understood that for DFT and IDFT functions, the value of variable N can be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N can be any integer that is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0078] although Figure 2a and Figure 2b An example of a wireless transmit and receive path is shown, but it is possible to modify it further. Figure 2a and Figure 2b Make various changes. For example, Figure 2a and Figure 2b The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. Furthermore, Figure 2a and Figure 2b This is intended to illustrate examples of the types of send and receive paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0079] Figure 3a Example UE 116 according to this disclosure is shown. Figure 3a The embodiment of UE 116 shown is for illustrative purposes only, and Figure 1UEs 111-115 can have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3a This disclosure is not intended to limit the scope of any particular implementation of the UE.

[0080] UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a transmit (TX) processing circuitry 303, a microphone 304, and a receive (RX) processing circuitry 305. UE 116 also includes a speaker 306, a controller / processor 307, an input / output (I / O) interface 308, multiple input devices 309, a display 310, and a memory 311. The memory 311 includes an operating system (OS) 312 and one or more applications 313.

[0081] RF transceiver 302 receives incoming RF signals transmitted by a gNB of wireless network 100 from antenna 301. RF transceiver 302 down-converts the incoming RF signals to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 305 sends the processed baseband signal to speaker 306 (e.g., for voice data) or to controller / processor 307 (e.g., for web browsing data) for further processing.

[0082] TX processing circuitry 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. TX processing circuitry 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceiver 302 receives the processed baseband or IF signals from TX processing circuitry 303 and up-converts the baseband or IF signals into RF signals transmitted via antenna 301.

[0083] The controller / processor 307 may include one or more processors or other processing devices and execute an OS 312 stored in memory 311 to control the overall operation of the UE 116. For example, the controller / processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals through the RF transceiver 302, the RX processing circuit 305, and the TX processing circuit 303 according to known principles. In some embodiments, the controller / processor 307 includes at least one microprocessor or microcontroller.

[0084] 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 a system having a 2D antenna array as described in the embodiments of this disclosure. The controller / processor 307 is capable of moving data into or out of the memory 311 as needed for the execution of the process. In some embodiments, the controller / processor 307 is configured to execute an application 313 based on the OS 312 or in response to signals received from a gNB or operator. The controller / processor 307 is also coupled to an I / O interface IF 308, which provides the UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. The I / O interface 308 is the communication path between these accessories and the controller / processor 307.

[0085] The controller / processor 307 is also coupled to input devices(s) 309 and a display 310. An operator of the UE 116 can use the input devices(s) 309 to input data into the UE 116. The display 310 may be a liquid crystal display or another display capable of displaying text and / or at least limited graphics (such as from a website). Memory 311 is coupled to the controller / processor 307. A portion of memory 311 may include random access memory (RAM), while another portion of memory 311 may include flash memory or other read-only memory (ROM).

[0086] although Figure 3a An example of UE 116 is shown, but it is possible to... Figure 3a Make various changes. For example, Figure 3a The various components can be combined, further subdivided, or omitted, and additional components can be added as needed. As a specific example, the controller / processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although... Figure 3a The UE116 is shown configured as a mobile phone or smartphone, but the UE can be configured to operate as other types of mobile or fixed devices.

[0087] Figure 3b An example gNB 102 according to this disclosure is shown. Figure 3b The embodiment of gNB 102 shown is for illustrative purposes only, and Figure 1 Other gNBs can have the same or similar configurations. However, gNBs have a wide variety of configurations, and Figure 3b The scope of this disclosure is not limited to any particular implementation of the gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0088] like Figure 3b As shown, gNB 102 includes multiple antennas 370a-370n, multiple RF transceivers 372a-372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple 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.

[0089] RF transceivers 372a-372n receive incoming RF signals, such as signals transmitted by the UE or other gNBs, from antennas 370a-370n. RF transceivers 372a-372n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are sent to RX processing circuitry 376, which generates processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. RX processing circuitry 376 sends the processed baseband signals to controller / processor 378 for further processing.

[0090] 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. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from the TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0091] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the reception of forward channel signals and the transmission of reverse channel signals via RF transceivers 372a-372n, RX processing circuitry 376, and TX processing circuitry 374, according to known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 378 may perform a BIS process, such as by a blind interference sensing (BIS) algorithm, and decode the received signal after subtracting interference. The controller / processor 378 may support any of a wide variety of other functions in the gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0092] The controller / processor 378 is also capable of executing programs and other processes, such as a basic operating system, residing in the memory 380. The controller / processor 378 is also capable of supporting channel quality measurement and reporting for systems having 2D antenna arrays as described in embodiments of this disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 is capable of moving data into or out of the memory 380 as needed for the execution of processes.

[0093] The controller / processor 378 is also coupled to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or over a network. The backhaul or network interface 382 is capable of supporting communication via any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G or new radio access technologies or NR, LTE, or LTE-A), the backhaul or network interface 382 allows the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 allows the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable architecture supporting communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0094] Memory 380 is coupled to controller / processor 378. A portion of memory 380 may include RAM, while another portion may include flash memory or other ROM. In some embodiments, multiple instructions, such as a BIS algorithm, are stored in memory. The multiple instructions are configured to cause controller / processor 378 to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0095] As described in more detail below, the transmit and receive paths of the gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuitry 374, and / or RX processing circuitry 376) support aggregated communication with FDD and TDD cells.

[0096] although Figure 3b An example of gNB 102 is shown, but it is possible to compare it with other models. Figure 3b Various modifications can be made. For example, gNB102 can include any number of... Figure 3aEach component shown. As a specific example, an access point can include multiple backhaul or network interfaces 382, ​​and a controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as a single instance including TX processing circuitry 374 and a single instance including RX processing circuitry 376, the gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0097] In this document, the term “Channel State Information (CSI)” may be used interchangeably with the terms “CSI parameter” or “CSI quantity”.

[0098] In this document, CSI may include at least one of the following: CSI-RS Resource Indicator (CRI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Layer Indicator (LI), Synchronization Signal (SS) / Physical Broadcast Channel (PBCH) Block Resource Indicator (SSBRI), Layer 1-Reference Signal Received Power (L1-RSRP), Layer 1-Single to Interference Noise Ratio (L1-SINR), and Capability Index.

[0099] In this document, the term “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”.

[0100] In this article, CSI can be either a single report or a CSI reported by the UE within a single report instance.

[0101] In this document, the term "reference signal" may be used interchangeably with the term "reference signal resource".

[0102] In this document, the reference signal may include at least one of the following: a reference signal for synchronization, a reference signal for demodulation (e.g., a demodulation reference signal (DM-RS)), a reference signal for acquiring channel state, a reference signal for phase tracking, a reference signal for mobility, a reference signal for positioning, a reference signal for channel measurement, a reference signal for interference measurement, and a reference signal for sounding. Optionally, the reference signal for synchronization may include at least one of the following: a primary synchronization signal and a secondary synchronization signal. Optionally, the reference signal for synchronization may include a synchronization signal / physical broadcast channel block (SS / PBCH block, SSB). Optionally, the reference signal for demodulation may include at least one of the following: a reference signal for data channel demodulation and a reference signal for control channel demodulation. Optionally, the data channel may include at least one of the following: a Physical Downlink Shared Channel (PDSCH) and a Physical Uplink Shared Channel (PUSCH). Optionally, the control channel may include at least one of the following: a Physical Downlink Control Channel (PDCCH) and a Physical Uplink Control Channel (PUCCH). Optionally, the reference signal used to acquire the channel state may include at least one of the following: a reference signal for tracking, a reference signal for CSI acquisition, and a reference signal for beam management. Optionally, the reference signal used for beam management may include at least one of the following: a reference signal for acquiring L1-RSRP and a reference signal for acquiring L1-SINR. Optionally, acquiring L1-RSRP may be by calculating L1-RSRP. Optionally, acquiring L1-SINR may be by calculating L1-SINR. In this document, the "reference signal used for sounding" may be referred to as the sounding reference signal (SRS).

[0103] In this document, the term "beam" may include at least one of the following: "quasi-co-location (QCL) parameter", "transmission configuration indication (TCI) status", "spatial filter", "antenna port", "transmission and reception point (TRP)", "reference signal", "beam information", and "beam index". Optionally, one beam being identical to another can mean that one beam and another beam are quasi-co-located.

[0104] In this paper, an antenna port can be defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.

[0105] In this paper, two antenna ports are considered quasi-co-located if the large-scale properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. Optionally, the large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0106] In this document, the term "QCL parameter" may be used interchangeably with the terms "QCL information," "QCL assumption," "QCL configuration," and "QCL configuration and / or QCL type." Optionally, a QCL parameter may include / represent at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameter. The spatial reception parameter can be a parameter used for spatial reception. Optionally, a QCL parameter may include a combination of different types of parameters. For example, a QCL parameter may include: Doppler shift, Doppler spread, average delay, and delay spread; this type of QCL parameter may be referred to as QCL parameter type A. For example, a QCL parameter may include: Doppler shift and Doppler spread; this type of QCL parameter may be referred to as QCL parameter type B. For example, a QCL parameter may include: Doppler shift and average delay; this type of QCL parameter may be referred to as QCL parameter type C. For example, QCL parameters may include spatial reception parameters, which may be referred to as QCL parameter type D. For instance, if the large-scale properties of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports can be considered quasi-co-located. Optionally, large-scale properties include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial reception parameters. For instance, if the spatial reception parameters of the channel over which a symbol is conveyed on one antenna port can be inferred from the channel over which a symbol is conveyed on the other antenna port, then the two antenna ports are considered quasi-co-located according to QCL parameter type D.

[0107] In this document, the term "TCI state" may be used interchangeably with the terms "TCI state configuration," "TCI state configuration information," "information for configuring the TCI state," or "information for indicating the TCI state." Optionally, the TCI state can be a unified TCI state. Optionally, the TCI state can be at least one of an uplink TCI state (UL TCI state), a downlink TCI state (DL TCI state), or a joint TCI state. Optionally, the unified TCI state can be an uplink TCI state (UL TCI state) and a downlink TCI state (DL TCI state), or a joint TCI state.

[0108] Optionally, a TCI state may include parameters configuring a quasi-co-location relationship. These parameters configure the relationship between a reference signal (e.g., one or two reference signals, or one or two downlink reference signals) and at least one of the following: the DM-RS (demodulation reference signal) port of the PDSCH, the DM-RS port of the PDCCH, or the CSI-RS port of the CSI-RS resource. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type1) for the first downlink reference signal. Optionally, the quasi-co-location relationship is configured by higher-layer parameters (e.g., qcl-Type2) for the second downlink reference signal. In the case of two downlink reference signals, the QCL types are not the same, regardless of whether the references are to the same DL RS or different DL RSs.

[0109] In this document, the term "spatial domain filter" may be used interchangeably with the terms "spatial filter," "uplink transmission spatial domain filter," "spatial domain filter for uplink transmission," or "spatial domain filter for downlink reception."

[0110] In this document, the term “opportunity to transmit a reference signal resource” may be used interchangeably with the terms “opportunity to receive a reference signal resource” or “opportunity to transmit a reference signal” or “opportunity to receive a reference signal” or “opportunity to transmit a reference signal” or “opportunity to receive a reference signal”.

[0111] In this document, the term "UE capability" may be used interchangeably with the terms "UE feature", "UE feature group", "UE capability parameter", "reported UE capability", "UE capability signaling", or "reported UE capability parameter".

[0112] In this disclosure, time-domain resources may include / correspond to several time-domain units.

[0113] In this paper, the temporal unit can be one of: frame, subframe, time slot, sub-time slot, or symbol. Optionally, a sub-time slot can be a subset of a time slot in the temporal domain. For example, the symbols included in a sub-time slot are a subset of the symbols included in a time slot. Optionally, in this paper, the temporal unit can be one of: second, millisecond, microsecond, nanosecond, or sample point.

[0114] In this disclosure, frequency domain resources may include / correspond to several frequency domain units.

[0115] In this paper, a frequency domain unit can be at least one of the following: band, subband, component carrier (CC), bandwidth part (BWP), resource block, resource block group (RBG), subcarrier, carrier, frequency band, frequency range, cell, and serving cell. A resource block can be a physical resource block (PRB) or a common resource block (CRB). A frequency range can be frequency range 1 and frequency range 2 (e.g., frequency range 2-1 and / or frequency range 2-2).

[0116] In this paper, the time-frequency unit can be either a resource element (RE) or a resource element group (REG). A resource element group can include one or more resource elements. For example, a resource element group can include 6 or 12 resource elements.

[0117] In this paper, the starting time-domain position of a channel, signal, or resource is an earlier position in the time domain, and the ending time-domain position of a channel, signal, or resource is a later position in the time domain.

[0118] In this paper, the starting frequency domain position of a channel, signal, or resource is a lower position in the frequency domain, and the ending frequency domain position of a channel, signal, or resource is a higher position in the frequency domain.

[0119] In this document, the term "PDCCH" may be used interchangeably with the terms "downlink control channel" or "control channel for downlink transmission" or "control channel for downlink".

[0120] In this document, the term “PDCCH” may be used interchangeably with the term “PDCCH candidate”.

[0121] In this document, the term “PDSCH” may be used interchangeably with the terms “downlink data channel” or “data channel for downlink transmission” or “data channel for downlink”.

[0122] In this document, the term "PUCCH" may be used interchangeably with the terms "uplink control channel" or "control channel for uplink transmission" or "control channel for uplink".

[0123] In this document, the term “PUSCH” may be used interchangeably with the terms “uplink data channel” or “data channel for uplink transmission” or “data channel for uplink transmission”.

[0124] In this document, the term “Downlink Control Information (DCI)” may be used interchangeably with the terms “DCI format” or “control information for downlink”.

[0125] In this document, the term "Uplink Control Information (UCI)" may be used interchangeably with the term "control information for uplink".

[0126] In this paper, DCI detection includes receiving and / or decoding DCI.

[0127] In this document, the term "information bits of DCI / UCI" may be used interchangeably with the terms "information bits associated with DCI / UCI," "information bits included in DCI / UCI," or "information bits corresponding to DCI / UCI." Optionally, the information bits associated with DCI / UCI may include: the information bits of the DCI / UCI and the check bits corresponding to that DCI / UCI (e.g., Cyclic Redundancy Check (CRC) bits). Alternatively, the information bits associated with DCI / UCI may include: the information bits of the DCI / UCI and bits used to check that DCI / UCI (e.g., Cyclic Redundancy Check (CRC) bits).

[0128] In this document, the term "information bits of PDSCH / PUSCH" may be used interchangeably with the terms "information bits associated with PDSCH / PUSCH," "information bits carried by PDSCH / PUSCH," "information bits of a TB included in PDSCH / PUSCH," or "information bits of a TB carried by PDSCH / PUSCH." Optionally, the information bits associated with the information bits carried by PDSCH / PUSCH may include: the information bits of a TB carried by PDSCH / PUSCH and the check bits corresponding to that TB (e.g., Cyclic Redundancy Check (CRC) bits). Optionally, the information bits associated with PDSCH / PUSCH may include: the information bits of PDSCH / PUSCH and bits used to check the TB carried by that PDSCH / PUSCH (e.g., Cyclic Redundancy Check (CRC) bits).

[0129] In this document, the term “size of the information field” may be used interchangeably with the terms “bit width of the information field” or “number of information bits in the information field”.

[0130] In this paper, the information bits of DCI can be: information bits included in DCI, information bits associated with DCI, or the payload of DCI.

[0131] In this paper, the existence of an information field is defined as a field whose size is greater than 0 bits. The non-existence of an information field is defined as a field whose size is equal to 0 bits.

[0132] In this paper, the value x of an information field can correspond to the (x+1)th code point of that information field, where x ≥ 0. The terms "value of an information field" and "code point of an information field" are interchangeable.

[0133] In this document, the term “Control Resource Set (CORESET)” may be used interchangeably with the terms “control resource” or “resource for receiving control information” or “resource for listening to PDCCH” or “resource for detecting control information”.

[0134] In this document, the term "search space" may be used interchangeably with the terms "PDCCH search space," "PDCCH search space set," "PDCCH candidate search space," "PDCCH candidate search space set," "search space used for searching PDCCH," "search space used for searching PDCCH candidates," "search space set used for searching PDCCH," or "search space set used for searching PDCCH candidates." Optionally, the search space can be a Common Search Space (CSS) or a UE-specific Search Space (USS). Optionally, the search space can be used for detecting DCI. Optionally, the search space can be used for detecting DCI formats.

[0135] In this paper, the term “PDCCH candidate associated with the search space” can be used interchangeably with the term “PDCCH candidate in the search space”.

[0136] In this paper, the modulation method associated with a PDCCH candidate can be the modulation method used by the corresponding PDCCH candidate. The aggregation level associated with a PDCCH candidate can be the aggregation level of the corresponding PDCCH candidate.

[0137] In this document, the UE can listen to the PDCCH (or listen to PDCCH candidates) during a PDCCH listening opportunity. Optionally, a PDCCH listening opportunity can be one or more (contiguous) time-domain units. Optionally, a PDCCH listening opportunity can be: an opportunity for listening to the PDCCH, or an opportunity for listening to PDCCH candidates.

[0138] In this paper, monitoring PDCCH candidates can be: receiving PDCCH candidates and / or decoding according to the monitored DCI formats.

[0139] In this document, the DCI format can be at least one of: DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 0_3, DCI format 1_0, DCI format 1_1, DCI format 1_2, and DCI format 1_3. In this document, the type of the DCI format can be one of the following: DCI format 0_0, DCI format 0_1, DCI format 0_2, DCI format 0_3, DCI format 1_0, DCI format 1_1, DCI format 1_2, and DCI format 1_3.

[0140] In this paper, the Hybrid Automatic Repeat Request (HARQ) message can be a Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) message.

[0141] In this document, the PDCCH may carry the DCI and / or the corresponding CRC, or the DCI and / or the corresponding CRC may be present in the PDCCH. Optionally, the CRC may be scrambled in a specific manner. For example, the CRC may be scrambled based on the Radio Network Temporary Identifier (RNTI). Two PDCCHs having the same scrambling can be achieved by both PDCCHs being scrambled with the same RNTI. Optionally, the RNTI may be either the Cell Radio Network Temporary Identifier (C-RNTI) or the Configured Scheduling Radio Network Temporary Identifier (CS-RNTI).

[0142] In this document, higher-level parameters include at least one of Radio Resource Control (RRC) parameters and Media Access Control (MAC)-Control Element (CE) (MAC-CE) parameters. RRC parameters can be parameters configured / indicated by RRC signaling. MAC-CE parameters can be parameters indicated / activated by MAC-CE signaling. Optionally, information configured by higher-level parameters can mean that information is indicated / activated by higher-level parameters.

[0143] In this document, higher-level signaling includes at least one of RRC parameters and MAC-CE indication parameters; or, higher-level signaling may include at least one of RRC signaling and MAC-CE signaling. Optionally, the configuration of information by higher-level signaling may be: information is indicated / activated by higher-level signaling.

[0144] In this document, UE obtaining configuration information can refer to: UE receiving / being configured with configuration information. In this document, "obtaining configuration information" can be used interchangeably with the terms "receiving configuration information" or "being configured with configuration information."

[0145] In this article, a cell includes at least one of the following: serving cell, candidate cell, primary cell, secondary cell, and special cell. A special cell can be a currently existing special cell.

[0146] In this paper, when a DCI schedules a channel or signal, the cell that receives or transmits that channel or signal can be referred to as the scheduled cell. The cell that the DCI is detected in, or the cell that listens to / receives the DCI, can be referred to as the scheduling cell.

[0147] In this paper, when a DCI schedules a channel or signal, the BWP that receives or transmits that channel or signal can be referred to as the scheduled BWP. The BWP that the DCI detects, or the BWP that listens to / receives the PDCCH associated with the DCI, can be referred to as the scheduling BWP.

[0148] In this disclosure, "determining a measurement" can mean: determining the result of a measurement, or acquiring the result of a measurement, or acquiring a measurement based on a reference signal, or acquiring a measurement based on measurement resources, or acquiring a measurement used to determine the CSI.

[0149] In this disclosure, "determining channel measurement" can be: determining the result of channel measurement, or acquiring the result of channel measurement, or acquiring channel measurement based on a reference signal, or acquiring channel measurement based on measurement resources, or acquiring channel measurement used to determine CSI.

[0150] In this disclosure, "determining interference measurement" can be: determining the result of interference measurement, or acquiring the result of interference measurement, or acquiring interference measurement based on a reference signal, or acquiring interference measurement based on measurement resources, or acquiring interference measurement used to determine CSI.

[0151] In this disclosure, the term "uplink channel associated with CSI report" may be used interchangeably with the terms "uplink channel corresponding to CSI report" or "uplink channel carrying CSI report".

[0152] In this disclosure, a parameter set (numerology) can refer to a group of parameters that define the basic time and frequency units in a wireless communication system. These parameters can be used to determine the waveform of a signal, subcarrier spacing, and sampling rate. The parameter set can include at least one of the following: subcarrier spacing, cyclic prefix, symbol period, sampling rate, time slot length, and frame structure. Optionally, the subcarrier spacing can be the frequency difference between two adjacent subcarriers, typically in Hertz (Hz). The subcarrier spacing determines the system's bandwidth and time resolution. Optionally, a cyclic prefix is ​​added to the beginning of an OFDM symbol. The length of the cyclic prefix is ​​related to the subcarrier spacing: the addition of the cyclic prefix is ​​to reduce the effects of multipath propagation. Optionally, the symbol period can be the duration of an OFDM symbol. Optionally, the symbol period can be the reciprocal of the subcarrier spacing. Optionally, the sampling rate can be the sampling frequency used when receiving and transmitting signals. Optionally, the sampling rate is related to the subcarrier spacing. Optionally, the time slot length can be: in a TDD (Time Division Duplex) system, a time slot is a time period used to distinguish between the uplink and downlink. Optionally, the slot length is related to the subcarrier spacing and symbol period. Optionally, the frame structure is used to define how the slots within a frame are organized, including the frame length and the number of slots. In 5G NR (New Radio), various parameter sets can be configured to adapt to different frequency bands and application scenarios. For example, low-frequency bands may use larger subcarrier spacing to support wider bandwidth and longer transmission distances, while high-frequency bands may use smaller subcarrier spacing to support higher data rates and lower latency.

[0153] In this paper, a cell can be a primary cell (PCell) and / or a primary secondary cell (PSCell) and / or a secondary cell and / or a special cell. A cell can be either a primary cell or a secondary cell. A special cell can be either a PCell or a PSCell. In dual-connectivity operations, a special cell refers to the primary cell of the Master Cell Group (MCG) or the primary / secondary cell of the Secondary Cell Group (SCG); otherwise, a special cell refers to the primary cell. A cell can be a serving cell or a non-serving cell.

[0154] Exemplary embodiments of this disclosure are further described below with reference to the accompanying drawings.

[0155] Figure 4Method 400 performed by a user equipment (UE) according to various embodiments of the present disclosure is illustrated. Method 400 includes: at 401, the UE receiving first channel state information for Layer 1 / Layer 2 triggered mobility (LTM). The first CSI (Channel Information System) reporting configuration includes a first CSI reporting configuration and a second CSI reporting configuration. The first CSI reporting configuration includes configuration information for a resource set used for channel measurement. This configuration information indicates K CSI Reference Signal (CSI-RS) resource identifiers (IDs) and K LTM candidate configuration IDs, where K ≥ 1. The k-th CSI-RS resource ID is associated with the k-th LTM candidate configuration ID, where 1 ≤ k ≤ K. The first CSI reporting configuration also includes first configuration information for L candidate cells. Each of the L first configuration information indicates at least one of a codebook parameter, a port indicator for non-PMI feedback, and a frequency domain configuration parameter. L is equal to the number of LTM candidate configuration IDs after removing duplicate IDs from the K LTM candidate configuration IDs. The LTM candidate configuration ID of the i-th candidate cell among the K candidate cells is the i-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs, where 1 ≤ i ≤ L; and at 402, the UE reports the CSI of N candidate cells out of the L candidate cells based on the first CSI reporting configuration, 1 ≤ N ≤ L, or determines whether to report the CSI report corresponding to the first CSI reporting configuration based on the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration, or, when the L candidate cells are the current special cells, discards the CSI report corresponding to the first CSI reporting configuration, where the N candidate cells are determined based on at least one of the following: the CQI value of the L candidate cells; the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration; whether the N candidate cells exclude the current special cells. The following describes this in detail. Figure 4 The steps in method 400 are shown.

[0156] When a UE moves between cells, cell handover is required to ensure communication quality. Cell handover can be performed via Layer 3 signaling. However, due to the significant transmission delay of Layer 3 signaling, the cell handover process is lengthy. During cell handover, the UE's transmission parameters are reconfigured, and the UE's transmit and receive capabilities are limited until the reconfiguration takes effect, leading to a degraded communication system performance. To reduce the duration of cell handover, one approach is to use Layer 1 / Layer 2 (L1 / L2) signaling with shorter application times for cell handover. For example, cell handover can be performed via L1 / L2 Triggered Mobility (LTM). To perform LTM, candidate cell configuration information needs to be pre-configured so that cell handover can be triggered / completed via Layer 1 / Layer 2 signaling when needed. The configuration method for candidate cell-associated configuration information is as follows.

[0157] In some cases, the UE may receive information for providing LTM configuration (e.g., LTM-Config). Optionally, the information for providing LTM configuration may configure one or more LTM candidate configurations (e.g., LTM-Candidate). Optionally, the candidate configuration may be a configuration associated with a candidate cell. For example, one or more LTM candidate configurations may correspond to the configurations of one or more candidate cells. Optionally, the candidate cell may be associated with an RRC reconfiguration message. Optionally, the candidate configuration may be a complete candidate configuration or an incremental configuration relative to a reference configuration. Optionally, one / each LTM candidate configuration may include / be configured with at least one of the following:

[0158] ● LTM Candidate Configuration ID. This ID is used to identify LTM candidate configurations. For example, this ID is configured via the parameter LTM-CandidateId or LTM-CandidateId-r18. Optionally, the LTM Candidate Configuration ID can be used to identify candidate cells.

[0159] ● The Physical Cell ID (PCI) used for LTM. This ID identifies the PCI of the special cell (SpCell) in the LTM candidate configuration. Optionally, the LTM candidate configuration refers to the LTM candidate configuration configured in the parameter ltm-CandidateConfig. For example, an LTM candidate configuration can configure the configuration information of one or more cells, where the special cell among the one or more cells is identified by this PCI. Here, the special cell among the one or more cells can be referred to as the candidate cell.

[0160] ● SSB configuration information for LTM (e.g., ltm-SSB-Config). Optionally, this SSB configuration information is specific to a cell for LTM candidate configuration. The SSB configuration information for LTM may include / indicate at least one of the following: frequency domain information, subcarrier spacing, period, and SSB location information. Frequency domain information may indicate the frequency point of the SSB. This frequency domain information can be indicated by the parameter ssb-Frequency. Optionally, frequency domain information may indicate the frequency domain location (e.g., the frequency domain location of CRB#0). Optionally, frequency domain information may indicate the frequency domain location referenced by the reference signal. Optionally, this frequency domain information indicates the frequency domain location of point A. Optionally, point A refers to the frequency point where the center of the lowest subcarrier of the SSB is located. Optionally, this frequency domain information indicates the frequency point of the lowest subcarrier (e.g., subcarrier #0) in the lowest resource block (RB) of the SSB. Subcarrier spacing may indicate the subcarrier spacing of the SSB. This subcarrier spacing can be indicated by the parameter subcarrierSpacing. The period refers to the period of the SSB, which can be indicated by the parameter ssb-Periodicity. SSB position information is used to indicate the time domain positions of the transmitted SSBs. SSB position information is indicated, for example, by a bitmap. The nth bit (or, the leftmost nth bit) of the bitmap corresponds to the SSB with index n. When the value of a bit is 0, it indicates that the corresponding SSB is not transmitted. When the value of a bit is 1, it indicates that the corresponding SSB is transmitted. For each / one candidate cell (or, LTM candidate configuration), the UE determines the time domain behavior of an SS / PBCH block based on ssb-Periodicity and ssb-PositionsInBurst, while the frequency domain behavior of an SSB is determined by the higher-layer parameters subcarrierSpacing and ssb-Frequency.

[0161] ● Configuration information for the CSI-RS resource used for LTM (e.g., ltm-nzp-CSI-RS-Resource-Config). Optionally, the CSI-RS resource can be a non-zero-power (NZP) CSI-RS resource. Optionally, this configuration information can configure one or more NZP CSI-RS resources. For example, each NZP CSI-RS resource can be configured via the parameter NZP-CSI-RS-Resource. Optionally, one / each NZP CSI-RS resource can be configured with at least one of the following parameters:

[0162] ■CSI-RS Resource ID. For example, the ID of a CSI-RS resource is indicated by the parameter nzp-CSI-RS-ResourceId;

[0163] ■ Resource mapping parameters (e.g., resourceMapping). Optionally, these resource mapping parameters indicate the OFDM symbol location(s) in an aslot and subcarrier occupancy in a PRB of the CSI-RS resource.

[0164] ■ Power control offset parameter (e.g., powerControlOffset). Optionally, this power control offset parameter indicates the power offset between the RE of the PDSCH and the RE of the NZP CSI-RS;

[0165] ■ Synchronization signal power control offset parameter (e.g., powerControlOffsetSS). Optionally, this synchronization signal power control offset parameter indicates the power offset between the RE of the NZP CSI-RS and the RE of the SSS (Secondary Synchronization Signal);

[0166] ■ Scrambling ID parameter (e.g., scramblingID). For example, the scrambling ID parameter is used to indicate the scrambling ID of the CSI-RS resource;

[0167] ■QCL parameter (e.g., qcl-InfoPeriodicCSI-RS). Optionally, the QCL parameter indicates the TCI status ID. This QCL parameter is configured when the CSI-RS resource is periodic;

[0168] ■ Frequency domain information. Optionally, the frequency domain information may include a frequency point parameter (e.g., absoluteFrequencyPointA). Optionally, the frequency domain information may indicate a frequency domain location (e.g., the frequency domain location of CRB#0). Optionally, the frequency domain information may indicate the frequency domain location referenced by the reference signal. Optionally, the frequency point parameter indicates the frequency domain location of point A. The frequency point parameter may indicate the absolute frequency of the reference resource block. Optionally, the reference CRB may be CRB#0. The lowest subcarrier of CRB#0 is point A. Optionally, the center frequency of the lowest subcarrier of CRB#0 (e.g., subcarrier #0) is point A.

[0169] ■ Subcarrier spacing parameter (e.g., subcarrierSpacing). Optionally, the subcarrier spacing parameter can indicate the subcarrier spacing of the CSI-RS;

[0170] ● Information used to indicate the RRC reconfiguration message (e.g., ltm-CandidateConfig). Optionally, this RRC reconfiguration message is used to configure the LTM candidate configuration.

[0171] ● TCI-related information (e.g., LTM-TCI-Info). This TCI-related information is used for LTM candidate configuration. Optionally, this information will be used during the activation of the TCI state(s) and / or upon the reception of the LTM Cell Switch procedure.

[0172] Optionally, the information used to provide LTM configuration can be one or more resource settings (LTM-CSI-ResourceConfig) for LTM.

[0173] The UE can receive L1 / L2 signaling (e.g., DCI and / or MAC-CE) and handover in candidate cells of the corresponding LTM candidate configuration based on the L1 / L2 signaling. For example, the UE has a current cell, and the UE has received configurations for one or more candidate cells. Optionally, when the UE receives an L1 / L2 signaling indicating one of the candidate cells, the UE will handover its current cell to the indicated candidate cell. Optionally, when the UE receives an L1 / L2 signaling indicating one of the candidate cells, and the indication takes effect, the UE's current cell becomes the indicated candidate cell. Optionally, the current cell can be the serving cell. Optionally, in this document, one or more candidate cells can all be special cells. When a candidate cell is handed over / determined as the current cell, it can be considered that the candidate cell corresponds to the current special cell.

[0174] To perform LTM-related cell handover, the link quality of different candidate cells needs to be evaluated. For example, if the current cell has poor link quality and / or the candidate cell has good link quality, the base station can indicate LTM-related cell handover, or the UE can be triggered to perform LTM-related cell handover. One method for the base station to obtain the link quality of candidate cells is for the UE to report for LTM. This report can indicate the link quality of candidate cells to the base station. The report for LTM can be beam reporting; for example, by reporting the L1-RSRP of one or more beams of candidate cells, the link quality of these cells can be reflected, so that the base station can make cell handover decisions. Since beam reporting can only report coarse information related to candidate cells (e.g., L1-RSRP), the base station cannot know the channel state of candidate cells by only obtaining beam reporting. After cell handover, the base station can only schedule the handover cell with a more conservative transmission method (e.g., a lower modulation coding scheme (MCS) and a wider precoder), which is detrimental to the data transmission efficiency of the handover cell. To enable downlink scheduling using a transmission mode that matches the channel state after cell handover, the base station needs to obtain CSI information (e.g., PMI, RI, CQI, etc.) of candidate cells before or during the handover process. To provide this CSI information, the UE can perform CSI reporting for LTM to notify the base station of the CSI information of one or more candidate cells. The configuration / reporting methods for CSI reporting are described below.

[0175] In some cases, the UE can acquire / receive configuration information for configuring CSI reporting. Optionally, the configuration information for configuring CSI reporting can be used for CSI measurement configuration information (e.g., CSI-MeasConfig) configuration. Optionally, the configuration information for configuring CSI reporting may include: CSI reporting configuration (e.g., CSI-ReportConfig), and / or, CSI reporting configuration for LTM (e.g., LTM-CSI-ReportConfig). The CSI reporting configuration may be referred to as: Reporting Settings. The UE can be configured with N A ≥1 CSI reporting configuration and / or X≥1 CSI reporting configuration for LTM (UE can be configured with N) A ≥1 CSI reporting configuration and / or X≥1 LTM-CSI-ReportConfig Reporting Settings). Optionally, the CSI reporting configuration for LTM can be a first CSI reporting configuration and / or a second CSI reporting configuration. Optionally, the CSI reporting configuration can be for CSI, for CSI parameter calculation, or for CSI determination. For example, the CSI reporting configuration can be for at least one of CQI, PMI, CRI, SSBRI, LI, RI, L1-RSRP. Optionally, the UE can be configured with N B≥1 resource setting (e.g., CSI-ResourceConfig) and / or ≥1 resource setting for LTM (e.g., LTM-CSI-ResourceConfig). Here, the resource setting can be configuration information for configuring CSI resources. Optionally, the resource setting can be configuration information for configuring one or more sets of reference signal resources. Optionally, the UE can be configured with one or two lists(s) of trigger states. This one or two lists of trigger states can be configured through higher-layer parameters for aperiodic CSI reporting (e.g., CSI-AperiodicTriggerStateList) and / or higher-layer parameters for semi-persistent CSI reporting (e.g., CSI-SemiPersistentOnPUSCH-TriggerStateList). Optionally, each trigger state included in the higher-layer parameters for aperiodic CSI reporting associated with the CSI reporting configuration can indicate a set of resources for channel measurement and / or a set of resources for interference measurement. Optionally, each trigger state may indicate a CSI reporting configuration ID, used to indicate the associated CSI reporting configuration. Optionally, each trigger state in the higher-layer parameters for semi-persistent CSI reporting includes / indicates a CSI reporting configuration and / or a CSI reporting configuration for LTM. Optionally, trigger states associated with aperiodic CSI reporting / semi-persistent CSI reporting may be indicated by a DCI. For example, the UE detects a DCI format that includes a CSI trigger field to indicate a trigger state. Optionally, trigger states associated with semi-persistent CSI reporting may be indicated by a DCI. For example, the UE receives a MAC-CE indicating a trigger state.

[0176] The following discusses the configuration method for one / each first CSI reporting configuration. Optionally, the first CSI reporting configuration is a CSI reporting configuration for LTM. Optionally, the first CSI reporting configuration can be a CSI reporting configuration for CSI acquisition for LTM. Optionally, the reporting quantity corresponding to the first CSI reporting configuration can include at least one of PMI, RI, CQI, and LI. One / each first CSI reporting configuration is configured / includes / indicates / associated resource settings. Optionally, the resource settings can be resource settings for LTM. Optionally, the resource settings can be for measurement. Optionally, the resource settings can be for channel measurement and / or interference measurement. Optionally, the resource settings can include one resource setting for channel measurement. Optionally, the resource settings can include two resource settings, wherein one resource setting is for channel measurement and the other resource setting is for interference measurement. Optionally, one / each resource setting can indicate / configure a resource set. The resource set may include / indicate K (K≥1) reference signals. For example, the configuration information corresponding to the resource set may indicate the IDs of the K reference signals. Here, the reference signal may be referred to as a reference signal resource. The ID of the reference signal may be referred to as a reference signal resource ID. Optionally, the reference signal resource in the resource set may come from the SSB indicated by the SSB configuration information for LTM. Optionally, the reference signal resource in the resource set may come from the CSI-RS resource indicated by the CSI-RS resource configuration information for LTM. Optionally, the reference signal may be an SSB and / or a CSI-RS. Optionally, the CSI-RS may be an NZP CSI-RS. For the SSB, the resource settings may include the configuration information of the resource set. The configuration information of the resource set may indicate / include the IDs of the K reference signals and / or K LTM candidate configuration IDs. In this document, the ID may be referred to as an index. Optionally, the LTM candidate configuration ID is used to indicate / represent the candidate cell associated with the ID of the reference signal. Optionally, the ID of the kth (1≤k≤K) reference signal is associated with the kth LTM candidate configuration ID. Optionally, there is a one-to-one correspondence between the IDs of the K reference signals and the K LTM candidate configuration IDs. Optionally, the ID of the reference signal can be an SSB ID and / or a CSI-RS resource ID. For example, if SSB#2, SSB#3, and SSB#5 are configured, and candidate configuration IDs#1, #3, and #4 are configured, then SSB#2 is associated with candidate configuration ID#1, SSB#3 with candidate configuration ID#3, and SSB#5 with candidate configuration ID#4.For example, if CSI-RS#1, CSI-RS#2, and CSI-RS#3 are configured, and candidate configuration IDs#2,#3, and#4 are configured, then CSI-RS#1 is associated with candidate configuration ID#2, CSI-RS#2 is associated with candidate configuration ID#3, and CSI-RS#3 is associated with candidate configuration ID#4. The configuration method for CSI-RS resource IDs can be found above.

[0177] ● Optionally, K LTM candidate configuration IDs can be associated with L candidate cells. Optionally, the L candidate cells can be determined based on the K LTM candidate configuration IDs. Optionally, the K LTM candidate configuration IDs correspond to L candidate cells. It can be considered that one LTM candidate configuration ID value corresponds to one candidate cell. Since LTM candidate configuration IDs may be duplicated among the K LTM candidate configuration IDs, the determination of L needs to be based on the number of different LTM candidate configuration IDs. Optionally, L is determined based on the number of LTM candidate configuration IDs associated with reference signals in the resource set. Optionally, in some cases, L...

[0178] = K. Optionally, when the K LTM candidate configuration IDs are all different, L = K. Optionally, L is determined based on the number of different LTM candidate configuration IDs associated with the reference signal in the resource set. Different LTM candidate configuration IDs associated with the reference signal can be: non-duplicate LTM candidate configuration IDs associated with the reference signal. Optionally, L equals the number of different LTM candidate configuration IDs among the K LTM candidate configuration IDs. Optionally, L equals the number of LTM candidate configuration IDs after removing the duplicated IDs within the K LTM candidate configuration IDs (L equals to the number of LTM candidateconfigurationID(s) after removing the duplicated IDs within the K LTMcandidateconfigurationID(s)). Optionally, L equals the number of LTM candidate configuration IDs with different values ​​among the K LTM candidate configuration IDs. In this document, LTM candidate configuration ID can be the value of LTM candidate configuration ID. Optionally, the p-th (1≤p≤L) candidate cell among the L candidate cells corresponds to the p-th LTM candidate configuration ID among the different LTM candidate configuration IDs. Optionally, the p-th (1≤p≤L) candidate cell among the L candidate cells corresponds to the LTM candidate configuration ID with the smallest (or largest) value among the different LTM candidate configuration IDs.

[0179] Optionally, the LTM candidate configuration ID corresponding to the p-th (1≤p≤L) candidate cell among the L candidate cells is the p-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs. Optionally, the LTM candidate configuration ID corresponding to the p-th (1≤p≤L) candidate cell among the L candidate cells is the p-th smallest (or p-th largest) LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs. Optionally, the LTM candidate configuration ID corresponding to the p-th (1≤p≤L) candidate cell among the L candidate cells is the p-th element in the set of different ID values ​​of the K LTM candidate configuration IDs. Optionally, the j-th element in the set of different ID values ​​of the K LTM candidate configuration IDs is less than the (j+1)-th element, where 1≤j≤L-1. Optionally, the j-th element in the set of different ID values ​​of the K LTM candidate configuration IDs is greater than the (j+1)-th element, where 1≤j≤L-1. The p-th candidate cell among L candidate cells can be called a candidate cell.

[0180] #p. Optionally, when L=K, the first candidate cell among the L candidate cells corresponds to the LTM candidate configuration ID with the smallest value among the K LTM candidate configuration IDs. Optionally, when L=K, the second candidate cell among the L candidate cells corresponds to the LTM candidate configuration ID with the second smallest value among the K LTM candidate configuration IDs, and so on. Optionally, the first candidate cell among the L candidate cells corresponds to the LTM candidate configuration ID with the smallest value among different LTM candidate configuration IDs. Optionally, the second candidate cell among the L candidate cells corresponds to the LTM candidate configuration ID with the second smallest value among different LTM candidate configuration IDs, and so on. For example, LTM candidate configuration ID #3, LTM candidate configuration ID #3, and LTM candidate configuration ID #1 can correspond to two candidate cells, where the first candidate cell corresponds to LTM candidate configuration ID #1; and the second candidate cell corresponds to LTM candidate configuration ID #3. The above method clarifies the mapping relationship between LTM candidate configuration IDs and candidate cells, so that the UE can use the corresponding parameters to calculate the CSI of the corresponding candidate cell, improving the accuracy of CSI and the reliability of the communication system. In this document, the description of "LTM candidate configuration ID" can also be applied to the description of "PCI", "the PCI associated with / corresponding to the LTM candidate configuration ID", or "the PCI in the LTM candidate configuration corresponding to the LTM candidate configuration ID". In this document, the term "LTM candidate configuration ID corresponding to the candidate cell" can be used interchangeably with the term "LTM candidate configuration ID of the candidate cell".

[0181] When K CSI-RS resources are aperiodic CSI-RS, the time slot in which the aperiodic CSI-RS is transmitted needs to be determined by the DCI that triggers the aperiodic CSI reporting and the CSI-RS triggering offset. Optionally, the UE receives a DCI that triggers the aperiodic CSI reporting. This DCI is in time slot n. The time slot in which the aperiodic CSI-RS (e.g., CSI-RS in K CSI-RS resources) is transmitted is time slot n+X, or... Here, X represents the CSI-RS trigger offset. Optionally, X can be configured by aperiodic trigger offset parameters (e.g., aperiodicTriggeringOffset, aperiodicTriggeringOffset-r16, or aperiodicTriggeringOffset-r17). A resource set can be configured with a CSI-RS trigger offset. Optionally, the subcarrier spacing of X is the CSI-RS subcarrier spacing or a set of CSI-RS subcarrier spacing parameters. Optionally, the subcarrier spacing of X is equal to the CSI-RS subcarrier spacing configuration. Optionally, μ CSIRS and μ PDCCH These are the subcarrier spacing configurations for CSI-RS and PDCCH, respectively.

[0182] Since the K CSI-RS resources can come from different candidate cells, their subcarrier spacing may be the same or different. When a resource set shares a single X, different subcarrier spacings of different CSI-RSs may cause them to be in different time slots, increasing the complexity of UE measurements. To avoid this, the subcarrier spacing corresponding to X can be explicitly defined, ensuring that the K CSI-RSs are in the same time slot. Optionally, the subcarrier spacing of X can be determined based on the minimum / maximum subcarrier spacing among the K CSI-RS resources. For example, the subcarrier spacing of X is equal to the minimum / maximum subcarrier spacing among the K CSI-RS resources. Optionally, μ CSIRS The corresponding subcarrier spacing can be determined based on the minimum / maximum subcarrier spacing among the subcarrier spacings of the K CSI-RS resources. Optionally, μ CSIRS The corresponding subcarrier spacing is equal to the minimum / maximum subcarrier spacing among the subcarrier spacings of the K CSI-RS resources. Optionally, X and μ CSIRSThe corresponding subcarrier spacing is equal. Another method to avoid CSI-RS being transmitted in different time slots is to configure a CSI-RS trigger offset for each candidate cell's CSI-RS reference signal resource, or to configure a corresponding CSI-RS trigger offset for each resource in the resource set. Optionally, the UE can receive K aperiodic trigger offset parameters, wherein the K aperiodic trigger offset parameters are used to determine X for each reference signal in the K reference signal resources. Optionally, the UE can receive L aperiodic trigger offset parameters, wherein the L aperiodic trigger offset parameters can be used to determine X for the reference signal corresponding to each of the L candidate cells corresponding to the K reference signal resources. Optionally, the L aperiodic trigger offset parameters can be configured through L first configuration information. The above methods allow multiple aperiodic CSI-RS to be transmitted in different time slots, reducing the complexity of UE measurements and improving the performance of the communication system.

[0183] Each first CSI report configuration can be configured to include or indicate / associate information indicating time-domain behavior (e.g., reportConfigType or ltm-ReportConfigType). The information indicating time-domain behavior can indicate one of the following: aperiodic (e.g., aperiodic), semi-persistent on PUCCH (e.g., semiPersistentOnPUCCH), semi-persistent on PUSCH (e.g., semiPersistentOnPUSCH), or periodic (e.g., periodic). For example, the parameter corresponding to the information indicating time-domain behavior can be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. Optionally, aperiodic time-domain behavior can be understood as the corresponding CSI report being aperiodic CSI report. Optionally, semi-persistent time-domain behavior corresponds to semi-persistent CSI reporting. Optionally, semi-persistent time-domain behavior on PUCCH corresponds to semi-persistent CSI reporting sent on PUCCH. Optionally, semi-persistent time-domain behavior on the PUSCH corresponds to semi-persistent CSI reporting transmitted on the PUSCH. Optionally, aperiodic time-domain behavior corresponds to aperiodic CSI reporting. For periodic and / or semi-persistent CSI reporting, the UE can be configured with periodicity and slot offset. The UE can apply this periodicity and slot offset to the corresponding slot to transmit the CSI report. Optionally, the configured periodicity and slot offset apply to the numerology of the ULBWP in which the CSI report is configured to be transmitted.

[0184] Each first CSI reporting configuration can be configured to include an indicative / associated reporting quantity parameter (e.g., the high-level parameter `reportQuantity`). Optionally, this reporting quantity parameter is used to indicate the reported CSI-related quantities. Optionally, the CSI-related quantities can include at least one of the following: CRI, RI, PMI, and CQI; CRI, RI, LI, PMI, and CQI; CRI, RI, and i1 (codebook parameter); CRI, RI, i1, and CQI; CRI, RI, and CQI; CRI and L1-RSRP; SSBRI and L1-RSRP; none.

[0185] ●Optionally, CSI-associated quantities of CRI, RI, PMI, and CQI refer to the reported quantity parameter being set / configured as 'cri-RI-PMI-CQI'. Optionally, CSI-associated quantities of CRI, RI, LI, PMI, and CQI refer to the reported quantity parameter being set / configured as 'cri-RI-LI-PMI-CQI'. Optionally, CSI-associated quantities of CRI, RI, PMI, and CQI refer to the reported quantity parameter being set / configured as 'cri-RI-i1'. Optionally, CSI-associated quantities of CRI, RI, i1, and CQI refer to the reported quantity parameter being set / configured as 'cri-RI-i1-CQI'. Optionally, CSI-associated quantities of CRI, RI, and CQI refer to the reported quantity parameter being set / configured as 'cri-RI-CQI'. Optionally, CSI-associated quantities of CRI and L1-RSRP mean that the reported quantity parameter is set / configured to 'cri-RSRP'. Optionally, CSI-associated quantities of no reporting mean that the reported quantity parameter is set / configured to 'none'. Optionally, CSI-associated quantities of at least RI mean that the CSI-associated quantities can include at least one of the following: CRI, RI, PMI, and CQI; CRI, RI, L1, PMI, and CQI; CRI, RI, and L1; CRI, RI, L1, and CQI; CRI, RI, and CQI.

[0186] For CSI acquisition (e.g., acquisition of RI, PMI, CQI), the parameters (e.g., spatial parameters, power parameters, frequency parameters) of different cells will vary significantly. Therefore, the following proposes a method for configuring parameters separately for different cells to adapt to the transmission characteristics of each cell and improve the accuracy of CSI. One / each first CSI reporting configuration can be configured / included / indicated / associated with one or more first configuration information. Here, the number of one or more first configuration information can be L. See above for a description of L. When the reported CSI associated with at least RI, L first configuration information can be configured. The configuration method of one / each first configuration information is further discussed below. Optionally, the first configuration information may include parameters for CSI calculation. Optionally, the first configuration information is used for CSI calculation. Optionally, the first configuration information is used for CSI calculation / CSI determination of the corresponding candidate cell. Optionally, the first configuration information is used for CSI calculation / CSI determination of the corresponding LTM candidate configuration. Optionally, the first configuration information can be associated with / included / configured with at least one of the following:

[0187] ●LTM Candidate Configuration ID. Here, "LTM Candidate Configuration ID" can be the same as "Candidate Cell ID".

[0188] The terms "candidate configuration ID corresponding to the candidate cell" or "candidate cell indication" can be used interchangeably, and this application does not restrict their names. Optionally, the LTM candidate configuration ID is used to indicate the LTM candidate configuration corresponding to the first configuration information. Optionally, the LTM candidate configuration ID is used to indicate the candidate cell corresponding to the first configuration information. Optionally, the LTM candidate configuration ID is used to identify the candidate cell associated with the first configuration information. The first configuration information indicates the parameters used to determine the CSI corresponding to the LTM candidate configuration. Optionally, the LTM candidate configuration ID can be used to indicate the candidate cell corresponding to / associated with the configuration reported by the first CSI. Optionally, the LTM candidate configuration ID corresponding to the first configuration information can be determined implicitly. Optionally, L pieces of first configuration information are mapped one-to-one with L candidate cells (or, L LTM candidate configuration IDs). Optionally, when the LTM candidate configuration ID is not configured, the L pieces of first configuration information are mapped to the L candidate cells. Optionally, the mapping between the L first configuration information pieces and the L candidate cells is based on the ascending / descending order of the LTM candidate configuration ID values ​​corresponding to the L candidate cells. For example, if the L first configuration information pieces are: first configuration information #1, first configuration information #2, and first configuration information #3; and the L candidate cells correspond to the LTM candidate configuration IDs: LTM candidate configuration ID #2, LTM candidate configuration ID #1, and LTM candidate configuration ID #5, then, taking ascending order, first configuration information #1 corresponds to LTM candidate configuration ID #1, first configuration information #2 corresponds to LTM candidate configuration ID #2, and first configuration information #3 corresponds to LTM candidate configuration ID #5. Optionally, the p-th first configuration information piece among the L first configuration information pieces corresponds to candidate cell #p. See above for a description of candidate cell #p. The description of the above method also applies to the description of PCI, for example, by replacing LTM candidate configuration ID with PCI. The above provides a method for determining the LTM candidate configuration / candidate cell associated with the first configuration information, so that the UE can obtain the parameters corresponding to the candidate cell to calculate the CSI, thereby improving the accuracy of the CSI and the reliability of the communication system.

[0189] ● Reference signal(s) resources for / corresponding to the first configuration information. There can be K1 (K1≥1) reference signal resources. Optionally, the reference signal(s) resources for / corresponding to the first configuration information are reference signal resources in a resource set. Optionally, the reference signal(s) resources for / corresponding to the first configuration information can be configured by higher-level parameters included in the first configuration information. For example, the first configuration information indicates one or more reference signal(s) resources in the resource set for / corresponding to the first configuration information. Optionally, the reference signal(s) resources for / corresponding to the first configuration information can be determined based on the LTM candidate configuration ID associated with / corresponding to the first configuration information. For example, a reference signal(s) for / corresponding to the first configuration information refers to a reference signal resource in the resource set whose associated LTM candidate configuration ID value is the same as the value of the LTM candidate configuration ID associated with / corresponding to the first configuration information. For example, if the first configuration information is associated with LTM candidate configuration ID #1, and the resource set includes CSI-RS#1, CSI-RS#2, and CSI-RS#3, and these resources are associated with LTM candidate configuration ID #1, LTM candidate configuration ID #1, LTM candidate configuration ID #2, and the LTM candidate configuration ID #1 associated with CSI-RS#1 and CSI-RS#2 is the same as the LTM candidate configuration ID #1 associated with the first configuration information, then the reference signal resources used / corresponding to the first configuration information are CSI-RS#1 and CSI-RS#2. Optionally, the CSI associated with the reference signal resources used / corresponding to the first configuration information is determined based on the parameters / configuration indicated in the first configuration information. Optionally, the CSI associated with the reference signal resource refers to the CSI determined / calculated based on the reference signal resource. Optionally, the CSI associated with the reference signal resource refers to the CSI determined / calculated based on the measurement (or measurement result) of the reference signal resource. The above methods enable the UE to obtain the reference signal corresponding to the candidate cell and use the corresponding reference signal to calculate the CSI, thereby improving the accuracy of the CSI and the reliability of the communication system.

[0190] ● Codebook Parameters. Codebook parameters are used to configure the codebook. These parameters may be indicated by the parameter `codebookConfig`. Optionally, these parameters apply to CSI calculation / CSI determination associated with / corresponding to the first configuration information. Optionally, these parameters apply to reference signal resources associated with / corresponding to the first configuration information. Optionally, these parameters may indicate the codebook type, or a codebook type parameter (e.g., `codebookType`). Optionally, the codebook type may be a Type I codebook (e.g., the corresponding codebook type parameter is set to 'typeI'). Optionally, the codebook type may be a Type I single-panel codebook (e.g., the corresponding codebook type parameter is set to 'typeISinglePanel'). Optionally, the codebook type may be a Type I multi-panel codebook (e.g., the corresponding codebook type parameter is set to 'typeI-MultiPanel'). Optionally, the codebook type may be a Type II codebook (e.g., the corresponding codebook type parameter is set to 'typeII'). Optionally, the codebook parameter may indicate at least one of the number of antenna ports in the first dimension (N1) and / or the number of antenna ports in the second dimension (N2) and / or the number of antenna groups (Ng). Here, the number of antenna ports in the first dimension (N1) and / or the number of antenna ports in the second dimension (N2) may correspond to / be associated with the antenna port dimension of the codebook or the dimension of antenna port for precoding. For example, when the codebook type is a Type 1 single-panel codebook or the codebook type is Type 2, the codebook parameter (e.g., codebook configuration parameter) may indicate / configure / include the number of antenna ports in the first dimension (N1) and / or the number of antenna ports in the second dimension (N2). For example, when the codebook type is a Type 1 multi-panel codebook, the codebook parameter (e.g., codebook configuration parameter) may indicate / configure / include the number of antenna ports in the first dimension (N1) and / or the number of antenna ports in the second dimension (N2) and the number of antenna groups (Ng). Optionally, the codebook parameters may indicate / configure / include codebook subset restriction parameters. Optionally, the UE may determine precoders that are not allowed or allowed to be reported based on the codebook subset restriction parameters. Optionally, the UE may determine the PMI corresponding to the precoders that are not allowed or allowed to be reported based on the codebook subset restriction parameters. Optionally, the codebook parameters may indicate a codebook mode (e.g., the parameter codebookMode).In different candidate cells, the arrangement of the antenna array may vary in some cases. Therefore, configuring the codebook parameters associated with the antenna array for different candidate cells can improve the accuracy of CSI acquisition and enhance the performance of the communication system.

[0191] ● Port indication for non-PMI feedback. Optionally, this port indication can be indicated by the parameter non-PMI-PortIndication. Optionally, this port indication is used for RI / CQI calculation. Optionally, this port indication for non-PMI feedback can be used for CSI calculation / CSI determination associated with / corresponding to the first configuration information. In different candidate cells, the number and / or orientation of antenna array beams may differ. Therefore, configuring a port indication for non-PMI feedback related to the number and rank of beams for different candidate cells can improve the accuracy of CSI acquisition and enhance the reliability of the communication system.

[0192] ●CQI Table Indication. Optionally, this port indication can be indicated by the parameter cqi-Table. Optionally, the CQI table indication can indicate the CQI table used for CQI calculation associated with / corresponding to the first configuration information. Optionally, this CQI table indication can be used for CSI calculation / CSI determination associated with / corresponding to the first configuration information. Different CQI table indications can be used to meet the scheduling requirements for different reliability levels. In different candidate cells, scheduling requirements differ in some cases. Therefore, configuring corresponding CQI table indications for different candidate cells can improve the accuracy of CSI acquisition and improve the performance of the communication system.

[0193] ● Frequency domain configuration parameters. Optionally, the frequency domain configuration parameters can be indicated by `reportFreqConfiguration`. Optionally, the frequency domain configuration parameters can indicate the reporting granularity in the frequency domain of the CSI associated with the first configuration information. The reporting frequency domain granularity can be subband or wideband. The frequency domain granularity for CQI reporting and PMI reporting can be configured separately. For example, CQI reporting can be wideband CQI reporting or subband CQI reporting. For example, PMI reporting can be wideband PMI reporting or subband PMI reporting. Optionally, the frequency domain configuration parameters can indicate the CSI reporting band. This CSI reporting band is associated with / corresponds to the CSI associated with the first configuration information. Optionally, the frequency domain configuration parameters can indicate the frequency domain granularity and / or CSI reporting band of the CSI corresponding to the first configuration information. Optionally, this frequency domain configuration parameter can be used for CSI calculation / CSI determination associated with / corresponding to the first configuration information. In different candidate cells, the frequency points of the cells are different in some cases. Therefore, configuring the corresponding frequency domain configuration for different candidate cells can improve the accuracy of CSI acquisition and improve the performance of the communication system.

[0194] ● The number of reported reference signals. The number of reported reference signals can be the number of reference signals reported in the CSI associated with / corresponding to the first configuration information. Optionally, the reported reference signals can be: reference signals reported in a single reporting time. The reported reference signals can be: CSI associated with K2 reported reference signals, or CSI determined based on measurements of K2 reference signals. For example, K2 can be the number of CRIs reported in the CSI associated with / corresponding to the first configuration information. In different candidate cells, the number of corresponding reference signal resources may differ in some cases. Therefore, configuring the corresponding number of reported reference signals for different candidate cells increases the flexibility of CSI reporting and improves the performance of the communication system.

[0195] ● Aperiodic trigger offset parameters. Aperiodic trigger offset parameters can be the aperiodic trigger offset parameters of the CSI-RS resources associated with / corresponding to the candidate cell in the first configuration information.

[0196] Each first CSI report configuration can be configured to include / indicate / assign the number of associated cells. Optionally, the cells can be candidate cells. Optionally, the number of cells can be indicated by the parameter nrOfReportedCells. Optionally, the number of cells can be the number of reported cells. Optionally, the reported cells can be the CSIs associated with the reported cells. Optionally, the number of reported cells can be: the number of cells reported in a single reporting session.

[0197] Each first CSI reporting configuration can be configured to include an indication of the number of reference signals associated with each reported cell. Here, a cell can be a candidate cell. Optionally, the reported reference signals can be: reference signals reported in a reporting time. The reported reference signals can be: CSI associated with the reported reference signals of each cell in the reported cells, or CSI determined based on measurements of the reported reference signals of each cell in the reported cells.

[0198] Each first CSI report configuration can be configured to include / indicate / associate a special cell indication. Optionally, the special cell indication can be indicated by the parameter spCellInclusion. Optionally, the special cell indication can indicate whether the UE includes the CSI report associated with the current special cell. Optionally, the special cell indication can indicate whether the UE excludes the CSI report associated with the current special cell. Optionally, the indication for excluding the current special cell can be indicated by the parameter spCellInclusion, or by another parameter. In this document, the term "exclude" can be used interchangeably with the term "not include". Here, the special cell can be the current special cell.

[0199] The configuration method for the second CSI reporting configuration is discussed below. Optionally, the method used to configure the first CSI reporting configuration can be used to configure the second CSI reporting configuration. Optionally, the second CSI reporting configuration is a CSI reporting configuration for LTM. Optionally, the second CSI reporting configuration can be a CSI reporting configuration for beam management of LTM. Optionally, the reporting quantity corresponding to the second CSI reporting configuration can include at least one of: CRI, SSBRI, L1-RSRP, and L1-SINR.

[0200] A first CSI reporting configuration can be configured / included / indicated / associated with L cells. The method for determining the L cells is described above. Optionally, the UE determines and / or reports the CSI of one or more cells. Optionally, the UE determines and / or reports the CSI of one or more cells based on the first CSI reporting configuration. Optionally, the CSI of the one or more cells is reported in a single reporting instance. Here, the cell can be an LTM candidate cell. Optionally, the UE can report the CSI of N (1≤N≤L) candidate cells. Optionally, the UE can report the CSI of N (1≤N≤L) candidate cells out of the L candidate cells. Here, the CSI of a candidate cell refers to the CSI determined / calculated based on the configuration information (e.g., first configuration information) of the corresponding candidate cell. Optionally, the CSI of a candidate cell can include: K rep (K rep ≥1) groups of CSIs, wherein each group of CSIs includes at least one of CRI, PMI, RI, CQI, and LI. Optionally, K rep (K rep In ≥1) groups of CSIs, the CRIs included in each group of CSIs are different. Optionally, K rep (K rep In ≥1) groups of CSIs, the CSI-RS resources corresponding to each group of CSIs are different. Optionally, K rep It can be predefined. K rep This could be the number of reported reference signals. For example, K rep It can be one of 1, 2, 3, or 4. Optionally, K... rep This could be indicated by the first configuration information corresponding to the candidate cell. Optionally, K rep This could be a configuration instruction reported by the first CSI. Optionally, K rep It can be determined / selected by the UE. K rep The CSI-RS resource corresponding to a group of CSIs can be: K rep The CRI corresponding to group CSI.

[0201] The method for determining N is discussed below. In some cases, such as when CSI reporting is periodic, N = L. In some cases, such as when N candidate cells exclude (or do not include) the current special cell, N = L-1. Optionally, N can be determined by at least one of the following methods:

[0202] ● Indication of the first CSI reporting configuration. Optionally, the first CSI reporting configuration includes a parameter for indicating the number of cells; wherein N is indicated by the parameter for indicating the number of cells. Optionally, the first CSI reporting configuration includes a parameter for indicating the number of cells reported; wherein N is indicated by the parameter for indicating the number of cells.

[0203] ● MAC-CE indication or DCI indication. Optionally, N can be a trigger status indication corresponding to / associated with the first CSI reporting configuration, either from the MAC-CE or DCI indication;

[0204] ●N is determined / indicated by the UE. Optionally, the UE determines / selects N cells from L cells;

[0205] ●N is less than or equal to J, where J is the capability indicator reported by the UE.

[0206] The above method clarifies how N is determined, so that the UE can select the better N candidate cells from L candidate cells, saving the signaling overhead of reporting.

[0207] Optionally, the UE can be configured with a second CSI reporting configuration. The UE can send CSI reports corresponding to the second CSI reporting configuration.

[0208] ● Optionally, the second CSI reporting configuration is for LTM. Optionally, the second CSI reporting configuration is for beam reporting. Optionally, the CSI reporting corresponding to the second CSI reporting configuration includes resource indicators (e.g., CRI / SSBRI) and (the resource indicator corresponds to) L1-RSRP.

[0209] Optionally, the CSI reporting corresponding to the second CSI reporting configuration includes a resource indicator (e.g., CRI / SSBRI) and (the resource indicator corresponds to) L1-SINR. The reporting quantity corresponding to the second CSI reporting configuration is CRI / SSBRI and L1-RSRP / L1-SINR. Optionally, the resource indicator included in the CSI reporting corresponding to the second CSI reporting configuration can be the resource indicator corresponding to the largest (measured) L1-RSRP.

[0210] ● Optionally, the UE determines N candidate cells based on the candidate cells associated with the resource indicators included in the CSI report corresponding to the second CSI reporting configuration. Optionally, the N candidate cells are determined based on the candidate cells associated with the resource indicators included in the CSI report corresponding to the second CSI reporting configuration. Optionally, the resource indicators included in the CSI report corresponding to the second CSI reporting configuration are associated with Q (Q≥1) candidate cells. Optionally, the resource indicators included in the CSI report corresponding to the second CSI reporting configuration (corresponding to the largest measured L1-RSRP) are associated with the first candidate cell. Optionally, the N candidate cells refer to the intersection of L candidate cells and Q candidate cells. Optionally, the N candidate cells refer to the intersection of L candidate cells and the first candidate cell.

[0211] ■ Optionally, the UE can determine whether to discard the CSI report based on the CSI report corresponding to the second CSI reporting configuration. Optionally, the UE can determine whether to discard the CSI report based on the candidate cell corresponding to the resource indicator indicated by the second CSI reporting configuration. Optionally, the UE can determine whether to discard the CSI report based on whether the candidate cell corresponding to the resource indicator indicated by the second CSI reporting configuration is one of L candidate cells. Optionally, the UE can determine whether to report the CSI report based on whether the candidate cell corresponding to the resource indicator indicated by the second CSI reporting configuration is one of L candidate cells. Optionally, when the candidate cell corresponding to the resource indicator indicated by the second CSI reporting configuration is different from the L candidate cells, the UE discards the CSI report. Optionally, when L=1, when the candidate cell corresponding to the resource indicator indicated by the second CSI reporting configuration is different from the L candidate cells, the UE discards the CSI report. Optionally, when the intersection is empty, the UE will not report the CSI corresponding to the first CSI reporting configuration. Optionally, an empty intersection can be understood as:

[0212] The L candidate cells do not include the Q candidate cells, or the L candidate cells do not include any one of the Q candidate cells, or the Q candidate cells do not include the L candidate cells, or the Q candidate cells do not include any one of the L candidate cells, or the L candidate cells do not include the first candidate cell, or the L candidate cells are different from the Q candidate cells, or the L candidate cells are different from any one of the Q candidate cells, or the Q candidate cells are different from the L candidate cells, or the Q candidate cells are different from any one of the L candidate cells, or the L candidate cells are different from the first candidate cell. Optionally, this method is applicable to periodic or semi-persistent CSI reporting. This method can cancel reporting when the L candidate cells have not been previously indicated by LTM beam management, saving UE power consumption and improving the efficiency of the communication system. Optionally, this method / function (determining whether to report the CSI report corresponding to the first CSI reporting configuration based on the CSI reporting indication corresponding to the second CSI reporting configuration) can be enabled or disabled. For example, this method / function can be enabled or disabled by an indication from the base station. For example, the first CSI reporting configuration indicates that this method / function is enabled or disabled. For example, this method / function can be enabled or disabled by UE capability reporting. For example, UE reporting UE capability signaling indicates that this method / function is enabled or disabled. When this method / function is enabled, the UE determines whether to report the CSI report corresponding to the first CSI reporting configuration based on the indication of the CSI reporting corresponding to the second CSI reporting configuration. In this document, not reporting CSI can mean: canceling CSI reporting, discarding CSI reporting, or not performing CSI reporting.

[0213] ■ Optionally, the CSI report corresponding to the second CSI reporting configuration refers to the CSI report prior to the CSI report corresponding to the first CSI reporting configuration. Alternatively, the CSI report corresponding to the second CSI reporting configuration refers to the most recent CSI report prior to the CSI report corresponding to the first CSI reporting configuration. For example, the CSI report corresponding to the first CSI reporting configuration is in time slot n. The CSI report corresponding to the second CSI reporting configuration is a report prior to time slot n. The CSI report corresponding to the second CSI reporting configuration is the most recent report relative to time slot n. Since channel state has time-domain correlation, a more recent CSI report in the time domain better reflects the channel state. This method ensures that the CSI report corresponding to the second CSI reporting configuration is a more recent CSI report in the time domain, allowing the UE to use accurate information to decide whether to report, thus improving the performance of the communication system.

[0214] ■ Optionally, the CSI report corresponding to the second CSI reporting configuration can be: the CSI report corresponding to the second CSI reporting configuration with a specific CSI reporting configuration ID. Optionally, the specific CSI reporting configuration ID can be indicated by the base station (e.g., indicated by higher-layer parameters).

[0215] The method for determining N candidate cells is discussed below. Optionally, the N candidate cells can be selected / determined based on at least one of the following:

[0216] ● The L1 value corresponding to the candidate cell. For example, the L1 values ​​corresponding to N candidate cells are the N candidate cells with the highest / lowest corresponding L1 values ​​among the L candidate cells. Optionally, the L1 value corresponding to the candidate cell is determined / measured based on the reference signal corresponding to the candidate cell. Optionally, the L1 value can refer to a measured quantity. Optionally, the L1 value can be a quantity obtained by measurement based on the reference signal. If a candidate cell corresponds to multiple L1 values ​​of multiple reference signals, then the L1 value corresponding to that candidate cell is the highest / lowest among them. Here, highest / lowest L1 value means: the value of the L1 value is the highest / lowest. Optionally, the L1 value can be L1-RSRP,

[0217] At least one of L1-SINR and CQI. Through this method, the UE can measure the reference signal to obtain a specific L1 quantity, and then use the L1 quantity to determine the cells with better channel quality to report, and report the CSI of the corresponding cells. This filters out the CSIs that are more likely to be used, so that the base station can obtain the CSIs of the cells with better channel quality for subsequent scheduling, thereby improving the efficiency of the communication system.

[0218] ● Whether the candidate cells do not include the current special cell, or whether the candidate cells exclude the current special cell. Whether the candidate cells do not include (or exclude) the current special cell can be indicated by the base station (e.g., indicated by the configuration reported via the first CSI). Optionally, N candidate cells do not include the current special cell. Optionally, N candidate cells exclude the current special cell. Optionally, N candidate cells excluding (or not including) the current special cell means that the CSIs of the N candidate cells do not include the CSI of the candidate cell corresponding to the current special cell. Optionally, N candidate cells excluding (or not including) the current special cell means that the CSIs of the N candidate cells do not include the CSI of the reference signal resources associated with the current special cell. Optionally, N candidate cells excluding (or not including) the current special cell means that the CSIs of the N candidate cells do not include the CSI of the reference signal resources associated with the current special cell. Since the CSI of candidate cells is obtained for scheduling after cell handover, and the CSI of the current cell can be obtained through CSI reporting for non-LTM in some cases, the current cell in L candidate cells can be excluded from N cells, thus filtering out the CSI that is more likely to be used, so that the UE can report more CSIs of other special cells that are not currently in use, thereby improving the efficiency of the communication system.

[0219] ● Whether the candidate cells include the current special cell. Whether the candidate cells include the current special cell can be indicated by the base station (e.g., indicated by the configuration reported via the first CSI). Optionally, N candidate cells include the current special cell. Optionally, N candidate cells including the current special cell means that the CSIs of the N candidate cells include the CSI of the candidate cell corresponding to the current special cell. Optionally, N candidate cells including the current special cell means that the CSIs of the N candidate cells include the CSI of the reference signal resources associated with the current special cell;

[0220] ● The second CSI reporting configuration corresponds to the CSI report. Optionally, the N candidate cells can be candidate cells associated with the resource indicated by the CSI report. Optionally, the N candidate cells can be candidate cells associated with the indicator (e.g., CRI / SSBRI) indicated / included by the CSI report. Optionally, the N candidate cells are determined based on the candidate cells associated with the reference signal resource corresponding to the indicator (e.g., CRI / SSBRI) indicated by the CSI report. Optionally, the resource (or the resource corresponding to the indicator) is the resource with the highest L1-RSRP (e.g., the measured L1-RSRP). For example, if the CRI included in the CSI report corresponds to CSI-RS resource #1 associated with LTM candidate configuration ID #1, then the N candidate cells include the candidate cell corresponding to LTM candidate configuration ID #1. This method allows the UE to identify cells with better channel quality through other CSI reports and report the corresponding cell's CSI, thus filtering out CSIs that are more likely to be used. This enables the base station to obtain the CSIs of cells with better channel quality for subsequent scheduling, improving the efficiency of the communication system.

[0221] The above methods enable the UE and the base station to have the same understanding of the CSI associated with the reported N candidate cells, thereby improving the reliability of the communication system.

[0222] Optionally, the UE can determine whether to report based on L candidate cells. Optionally, the UE can determine whether to discard CSI reporting based on L candidate cells. Optionally, the UE can determine whether to discard CSI reporting based on whether the L candidate cells are the current special cells. Optionally, when the L candidate cells are not the current special cells, the UE reports CSI. Optionally, when the L candidate cells are the current special cells, the UE discards CSI reporting. Optionally, when L=1, the first CSI reporting configuration can be considered to correspond to a candidate cell (e.g., the candidate cell indicated by the first configuration information). Optionally, when the candidate cell corresponding to the first CSI reporting configuration is the current special cell, the UE discards CSI reporting; and / or, when the candidate cell corresponding to the first CSI reporting configuration is not the current special cell, the UE reports CSI. Optionally, CSI reporting refers to: the CSI reporting corresponding to the first CSI reporting configuration. See above for a description of the L candidate cells. Optionally, this method / function (determining whether to report the CSI report corresponding to the first CSI reporting configuration based on L candidate cells) can be enabled or disabled. For example, this method / function can be enabled or disabled by an indication from the base station. For example, an indication for excluding the current special cell can enable or disable this method / function. For example, if the current special cell is excluded, the method is enabled; otherwise, the method is disabled. For example, the first CSI reporting configuration indicates that this method / function is enabled or disabled. For example, this method / function can be enabled or disabled by UE capability reporting. For example, the UE reports UE capability signaling to indicate that this method / function is enabled or disabled. When this method / function is enabled, the UE determines whether to report the CSI report corresponding to the first CSI reporting configuration based on the candidate cells corresponding to the first CSI reporting configuration. Optionally, generally, the CSI report corresponding to the first CSI reporting configuration is a periodic CSI report. Optionally, when L candidate cells are the current special cells and the CSI reporting corresponding to the first CSI reporting configuration is periodic CSI reporting, the UE discards the CSI reporting corresponding to the first CSI reporting configuration. For example, if the candidate cell corresponding to the first CSI reporting configuration is the current special cell and the CSI reporting corresponding to this first CSI reporting configuration is periodic CSI reporting, the UE discards the CSI reporting corresponding to this first CSI reporting configuration. Since periodic CSI reporting is configured through RRC signaling, its reporting behavior cannot be adjusted according to the current special cell in L1 / L2 signaling. Therefore, this method can promptly stop the corresponding CSI reporting when the candidate cell corresponding to the periodic CSI reporting is switched to the current special cell, reducing reporting overhead and improving UE performance. In this paper, not reporting CSI can be: canceling CSI reporting, discarding CSI reporting, or not performing CSI reporting.

[0223] Optionally, the reference signal resource associated with the current special cell in the resource set can be a reference signal resource with the same PCI and center frequency as the SSB of the current special cell. Here, the SSB can be the cell-defining SSB. The PCI of the reference signal resource refers to the PCI of the candidate cell (or the associated / corresponding LTM candidate configuration ID) associated with the reference signal resource. The center frequency of the reference signal resource is determined based on the frequency domain information configured for the reference signal resource.

[0224] Optionally, the candidate cell corresponding to / associated with a special cell refers to a candidate cell with the same PCI and center frequency as the current special cell's SSB. Here, the SSB can be the cell-defining SSB. The PCI of the candidate cell refers to the PCI of the candidate cell (or the LTM candidate configuration ID associated with / corresponding to the candidate cell). The center frequency of the candidate cell is determined based on the frequency domain information of the reference signal associated with the candidate cell. Optionally, the reference signal associated with the candidate cell refers to the reference signal configured in the configuration information of the CSI-RS resources used for LTM. Optionally, the reference signal resource associated with the candidate cell refers to the reference signal associated with the SSB configuration information used for LTM.

[0225] Optionally, a candidate cell that does not correspond to / is not associated with a special cell refers to a candidate cell that has a different PCI and / or a different center frequency than the current special cell's SSB.

[0226] In this article, "corresponding / associating with a special cell" can mean: corresponding / associating with the current special cell. "Not corresponding / not associated with a special cell" can mean: not corresponding / not associated with the current special cell. A special cell that is not currently associated with the cell can be referred to as a non-special cell.

[0227] The following discussion focuses on K. rep Optionally, K rep CSI-RS resources corresponding to group CSI (or, K) rep One CSI-RS resource, or K rep Each CRI is selected / determined based on at least one of the following:

[0228] ●L1 quantities corresponding to CSI-RS resources. For example, K rep Each CSI-RS resource is the K with the highest / lowest L1 value among the reference signal resources corresponding to the candidate cell. repA reference signal resource. Optionally, the L1 quantity corresponding to the reference signal resource is determined / measured based on the reference signal. Optionally, the L1 quantity can refer to a measured quantity. Optionally, the L1 quantity can be a quantity obtained by measurement based on the reference signal. Here, the highest / lowest L1 quantity refers to: the highest / lowest value of the L1 quantity. Optionally, the L1 quantity can be at least one of L1-RSRP, L1-SINR, and CQI. Through this method, the UE can measure the reference signal to obtain a specific L1 quantity, and then determine the reference signal resource with better channel quality to report based on the L quantity, and report the CSI of the corresponding cell, thus filtering out the CSIs that are more likely to be used, so that the base station can obtain the CSIs of the cells with better channel quality for subsequent scheduling, thereby improving the efficiency of the communication system;

[0229] ●The resource corresponding to the resource indicator included in the CSI reporting indication corresponding to the second CSI reporting configuration. The candidate cell associated with the resource indicator included in the CSI reporting indication corresponding to the second CSI reporting configuration and K. rep K corresponding to group CSI rep Candidate cells associated with each CSI-RS resource are identical. Optionally, K rep A CSI-RS resource includes / may be the resource indicated by the CSI reporting. Optionally, K rep Each CSI-RS resource may include the resource corresponding to the indicator (e.g., CRI / SSBRI) included in the CSI reporting indication. Optionally, K rep A CSI-RS resource may include a reference signal resource quasi-co-located with the reference signal resource indicated / included by the CSI report (e.g., CRI / SSBRI). For example, if the CRI included in the CSI report corresponds to CSI-RS resource #1 associated with LTM candidate configuration ID #1, then K rep The CSI-RS resource associated with LTM candidate configuration ID #1 includes CSI-RS resource #1. The characteristics of the second CSI reporting configuration and the corresponding CSI reporting configuration are described below. The configuration method for the second CSI reporting configuration is the same as that for the first CSI reporting configuration. Through this method, the UE can determine which cells have better channel quality to report through other CSI reports and report the CSI of the corresponding cells, thus filtering out CSIs that are more likely to be used. This allows the base station to obtain the CSIs of cells with better channel quality for subsequent scheduling, improving the efficiency of the communication system.

[0230] The following discusses the method for determining the CRI in the CSI of a candidate cell. Optionally, the CRI in the CSI of a candidate cell can be determined based on all reference signal resources in the resource set, or based on the reference signal resources corresponding to the candidate cell.

[0231] ● Optionally, when the N candidate cells do not exclude the current special cell and / or N = L and / or K1 > 1, the value k1 (0 ≤ k1 ≤ K1 - 1) of CRI in the CSI of the candidate cell corresponds to the (k1 + 1)-th CSI-RS resource corresponding to the candidate cell; where K1 refers to the number of CSI-RS resources corresponding to the candidate cell. Optionally, the bit width of the CSI field corresponding to CRI is determined based on K1. The bit width of the CSI field corresponding to CRI is equal to This method enables the UE to determine CRI using the number of reference signal resources corresponding to the candidate cell under specific conditions, saving signaling overhead compared to determining CRI using all resources in the resource set.

[0232] ● Optionally, when the N candidate cells do not exclude the current special cell and / or N = L and / or K1 = 1, the CSI of the candidate cell does not include CRI; where K1 refers to the number of CSI-RS resources corresponding to the candidate cell. Optionally, the bit width of the CSI field corresponding to CRI is determined based on K1. The bit width of the CSI field corresponding to CRI is equal to This method enables the UE to determine CRI using the number of reference signal resources corresponding to the candidate cell under specific conditions, saving signaling overhead compared to determining CRI using all resources in the resource set.

[0233] ● Optionally, when the N candidate cells exclude the current special cell and / or N < L, the value k2 (0 ≤ k2 ≤ K - 1) of CRI in the CSI of the candidate cell corresponds to the (k2 + 1)-th CSI-RS resource in the resource set. Optionally, the bit width of the CSI field corresponding to CRI is determined based on K. The bit width of the CSI field corresponding to CRI is equal to For the description of K, see above.

[0234] ● Optionally, when the N candidate cells exclude the current special cell and / or N = L - 1 and / or K1 > 1, the value k1 (0 ≤ k1 ≤ K1 - 1) of CRI in the CSI of the candidate cell corresponds to the (k1 + 1)-th CSI-RS resource corresponding to the candidate cell; where K1 refers to the number of CSI-RS resources corresponding to the candidate cell. Optionally, the bit width of the CSI field corresponding to CRI is determined based on K1. The bit width of the CSI field corresponding to CRI is equal to This method enables the UE to determine CRI using the number of reference signal resources corresponding to the candidate cell under specific conditions, saving signaling overhead compared to determining CRI using all resources in the resource set.

[0235] ● Optionally, when the N candidate cells exclude the current special cell and / or N = L - 1 and / or K1 = 1, the CRI is not included in the CSI of the candidate cell; where K1 refers to the number of CSI-RS resources corresponding to the candidate cell. Optionally, the bit width of the CSI field corresponding to the CRI is determined based on K1. The bit width of the CSI field corresponding to the CRI is equal to This method enables the UE to determine the CRI using the number of reference signal resources corresponding to the candidate cell under specific conditions, saving signaling overhead compared to determining the CRI using all the resources in the resource set.

[0236] ● Optionally, when the N candidate cells exclude the current special cell and / or N < L - 1, the value k2 (0 ≤ k2 ≤ K - 1) of the CRI in the CSI of the candidate cell corresponds to the (k2 + 1)-th CSI-RS resource in the resource set. Optionally, the bit width of the CSI field corresponding to the CRI is determined based on K. The bit width of the CSI field corresponding to the CRI is equal to For the description of K, refer to the above. This method enables the UE to obtain the reference signal corresponding to the candidate cell through the CRI under specific conditions, and accordingly calculate the CSI, improving the accuracy of the CSI and the reliability of the communication system.

[0237] The above method clarifies the determination method of the CRI in the CSI of the candidate cell, enabling the UE and the base station to have a common understanding of the CRI, and improving the reliability of the communication system.

[0238] Next, the determination method of the mapping order of the CSI of the N candidate cells is discussed. Optionally, the mapping order of the CSI of the N candidate cells is determined based on the order of the N candidate cells and / or the order of the values of the LTM candidate configuration IDs corresponding to the N candidate cells and / or whether the candidate cell is a special cell.

[0239] Optionally, (if the N candidate cells include a candidate cell corresponding to the current special cell,) the CSI of the candidate cells in the N candidate cells that do not correspond to the special cell is before / after the CSI of the candidate cells in the N candidate cells that correspond to the special cell; and / or, the mapping order of the CSI of the candidate cells in the N candidate cells that do not correspond to the special cell is determined based on the ascending / descending order of the values of the LTM candidate configuration IDs corresponding to the candidate cells. For example, the N candidate cells are: candidate cell #1 (associated with LTM candidate configuration ID #1, special cell), candidate cell #2 (associated with LTM candidate configuration ID #2, non-special cell), candidate cell #3 (associated with LTM candidate configuration ID #3, non-special cell), and the mapping order of the N candidate cells is: the CSI of candidate cell #2, the CSI of candidate cell #3, the CSI of candidate cell #1. The CSI of the candidate cell can be: the K of the candidate cellrep Group CSI.

[0240] Optionally, (if the N candidate cells do not include the candidate cells corresponding to the current special cell) the mapping order of the CSI of the N candidate cells is determined based on the ascending / descending order of the LTM candidate configuration ID values ​​corresponding to the candidate cells.

[0241] Optionally, the CSI report associated with / corresponding to the first CSI report configuration may include CSI Part 1 and CSI Part 2. Optionally, CSI Part 2 may include CSI Part 2 Broadband and CSI Part 2 Subband. CSI Part 2 Broadband refers to the Broadband CSI in CSI Part 2. CSI Part 2 Subband refers to the Subband CSI in CSI Part 2.

[0242] Optionally, in CSI Part 1, (when the N candidate cells include candidate cells corresponding to a special cell), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0243] ●CSI of candidate cell #1 that does not correspond to a special cell;

[0244] ●CSI of candidate cell #2 that does not correspond to a special cell;

[0245] ●…

[0246] ●CSI of candidate cell #N-1 that does not correspond to a special cell;

[0247] ●CSI of candidate cells corresponding to special cells.

[0248] Optionally, in CSI Part 1, (when the N candidate cells do not include candidate cells corresponding to special cells), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0249] ●CSI of candidate cell #1;

[0250] ●CSI of candidate cell #2;

[0251] ●…

[0252] ●CSI of candidate cell #N.

[0253] Optionally, in the CSI part of the two subbands, (when the N candidate cells include candidate cells corresponding to special cells), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0254] ●CSI of even subbands of candidate cell #1 that does not correspond to a special cell;

[0255] ●CSI of odd subbands of candidate cell #1 that does not correspond to special cells;

[0256] ●CSI of even-numbered subbands of candidate cell #2 that does not correspond to a special cell;

[0257] ●CSI of odd-numbered subbands of candidate cell #2 that does not correspond to special cells;

[0258] ●…

[0259] ●CSI of even-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0260] ●CSI of odd-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0261] ●CSI of even-numbered subbands of candidate cells corresponding to special cells;

[0262] ●CSI of odd-numbered sub-bands of candidate cells corresponding to special cells.

[0263] Optionally, in the CSI part of the two subbands, (when the N candidate cells include candidate cells corresponding to special cells), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0264] ●CSI of even-numbered subbands of candidate cell #1 that does not correspond to a special cell;

[0265] ●CSI of even-numbered subbands of candidate cell #2 that does not correspond to a special cell;

[0266] ●…

[0267] ●CSI of even-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0268] ●CSI of even-numbered subbands of candidate cells corresponding to special cells;

[0269] ●CSI of odd-numbered subbands of candidate cell #1 that does not correspond to special cells;

[0270] ●CSI of odd-numbered subbands of candidate cell #2 that does not correspond to special cells;

[0271] ●…

[0272] ●CSI of odd-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0273] ●CSI of odd-numbered sub-bands of candidate cells corresponding to special cells.

[0274] Optionally, in the CSI part of the two subbands, (when the N candidate cells do not include the candidate cells corresponding to the special cell), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0275] ●CSI of even-numbered subbands of candidate cell #1;

[0276] ●CSI of odd-numbered subbands of candidate cell #1;

[0277] ●CSI of even-numbered subbands of candidate cell #2;

[0278] ●CSI of odd-numbered subbands of candidate cell #2;

[0279] ●…

[0280] ●CSI of even-numbered subbands of candidate cell #N;

[0281] ●CSI of odd-numbered subbands of candidate cell #N.

[0282] Optionally, in the CSI part of the two subbands, (when the N candidate cells do not include the candidate cells corresponding to the special cell), the mapping order of the CSI of the N candidate cells is as follows (from first to last / from last to first):

[0283] ●CSI of even-numbered subbands of candidate cell #1;

[0284] ●CSI of even-numbered subbands of candidate cell #2;

[0285] ●…

[0286] ●CSI of even-numbered subbands of candidate cell #N;

[0287] ●CSI of odd-numbered subbands of candidate cell #1;

[0288] ●CSI of odd-numbered subbands of candidate cell #2;

[0289] ●…

[0290] ●CSI of odd-numbered subbands of candidate cell #N.

[0291] Optionally, candidate cell #1 has the smallest LTM candidate configuration ID, candidate cell #2 has the second smallest LTM candidate configuration ID, and so on. Optionally, candidate cell #n has the nth smallest LTM candidate configuration ID. Optionally, in CSI reporting, the qth (1≤q≤N)th candidate cell among N candidate cells corresponds to the qth (or qth largest) LTM candidate configuration ID (e.g., different LTM candidate configuration IDs). The qth candidate cell among N candidate cells can be referred to as candidate cell #q. Optionally, in CSI reporting, the rth (1≤r≤N)th candidate cell among N-1 candidate cells corresponds to the rth (or rth largest) LTM candidate configuration ID (e.g., different LTM candidate configuration IDs). The rth candidate cell among N-1 candidate cells can be referred to as candidate cell #r.

[0292] The above methods clarify the CSI mapping order, enabling the UE to assemble CSI information bits based on the correct mapping order, avoiding the reporting of incorrect CSIs, and improving the reliability of the communication system. In some cases, since the CSI corresponding to the current special cell can be obtained through non-LTM CSI reporting, the priority of non-special cell CSIs is more useful than that of special cell CSIs. The above methods can make the order of non-special cell CSIs higher than that of special cell CSIs, thereby preventing non-special cell CSIs from being ignored and improving the reliability of the communication system.

[0293] In some cases, the UE can transmit UCI information (including CSI) in the PUSCH or PUCCH. When the payload of the required UCI (including CSI) is too large to exceed the capacity limit of the (configured / allowed) channel, the UE can omit or not transmit some CSI bits based on priority. This allows the UE to send as many high-priority CSIs as possible to the base station while ensuring uplink transmission reliability, thus improving the efficiency of the communication system. The following describes the CSI omission method (e.g., the CSI omission method when the CSI report includes N resource-associated CSIs). Optionally, the omission of CSIs from the N candidate cells is performed at the candidate cell level. The UE omits CSIs in ascending order of priority. Optionally, the priority of the CSIs from the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is a special cell.

[0294] Optionally, (if the N candidate cells include candidate cells corresponding to the current special cell), the priority of the CSI of candidate cells that do not correspond to the special cell is higher / lower than the priority of the CSI of candidate cells that correspond to the special cell; and the priority of the CSI of candidate cells that do not correspond to the special cell is determined based on the ascending / descending order of the LTM candidate configuration ID corresponding to the candidate cell. For example, if the N candidate cells are: candidate cell #1 (associated with LTM candidate configuration ID #1, special cell), candidate cell #2 (associated with LTM candidate configuration ID #2, non-special cell), and candidate cell #3 (associated with LTM candidate configuration ID #3, non-special cell), the priority of the N candidate cells (from high to low) is: the CSI of candidate cell #2, the CSI of candidate cell #3, and the CSI of candidate cell #1. The CSI of a candidate cell can be: the K value of the candidate cell. rep Group CSI.

[0295] Optionally, (if the N candidate cells do not include the candidate cells corresponding to the current special cell) the priority of the CSI of the N candidate cells is determined based on the ascending / descending order of the LTM candidate configuration ID values ​​corresponding to the candidate cells.

[0296] Optionally, the CSI report associated with / corresponding to the first CSI report configuration may include CSI Part 1 and CSI Part 2. Optionally, CSI Part 2 may include CSI Part 2 Broadband and CSI Part 2 Subband. CSI Part 2 Broadband refers to the Broadband CSI in CSI Part 2. CSI Part 2 Subband refers to the Subband CSI in CSI Part 2.

[0297] Optionally, in CSI Part 1, (when the N candidate cells include candidate cells corresponding to a special cell), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0298] ●CSI of candidate cell #1 that does not correspond to a special cell;

[0299] ●CSI of candidate cell #2 that does not correspond to a special cell;

[0300] ●…

[0301] ●CSI of candidate cell #N-1 that does not correspond to a special cell;

[0302] ●CSI of candidate cells corresponding to special cells.

[0303] Optionally, in CSI Part 1, (when the N candidate cells do not include candidate cells corresponding to the special cell), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0304] ●CSI of candidate cell #1;

[0305] ●CSI of candidate cell #2;

[0306] ●…

[0307] ●CSI of candidate cell #N.

[0308] Optionally, in the CSI part of the two subband, (when the N candidate cells include candidate cells corresponding to special cells), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0309] ●CSI of even subbands of candidate cell #1 that does not correspond to a special cell;

[0310] ●CSI of odd subbands of candidate cell #1 that does not correspond to special cells;

[0311] ●CSI of even-numbered subbands of candidate cell #2 that does not correspond to a special cell;

[0312] ●CSI of odd-numbered subbands of candidate cell #2 that does not correspond to special cells;

[0313] ●…

[0314] ●CSI of even-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0315] ●CSI of odd-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0316] ●CSI of even-numbered subbands of candidate cells corresponding to special cells;

[0317] ●CSI of odd-numbered sub-bands of candidate cells corresponding to special cells.

[0318] Optionally, in the CSI part of the two subband, (when the N candidate cells include candidate cells corresponding to special cells), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0319] ●CSI of even-numbered subbands of candidate cell #1 that does not correspond to a special cell;

[0320] ●CSI of even-numbered subbands of candidate cell #2 that does not correspond to a special cell;

[0321] ●…

[0322] ●CSI of even-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0323] ●CSI of even-numbered subbands of candidate cells corresponding to special cells;

[0324] ●CSI of odd-numbered subbands of candidate cell #1 that does not correspond to special cells;

[0325] ●CSI of odd-numbered subbands of candidate cell #2 that does not correspond to special cells;

[0326] ●…

[0327] ●CSI of odd-numbered subbands of candidate cell #N-1 that does not correspond to special cells;

[0328] ●CSI of odd-numbered sub-bands of candidate cells corresponding to special cells.

[0329] Optionally, in the CSI part of the two subbands, (when the N candidate cells do not include the candidate cells corresponding to the special cell), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0330] ●CSI of even-numbered subbands of candidate cell #1;

[0331] ●CSI of odd-numbered subbands of candidate cell #1;

[0332] ●CSI of even-numbered subbands of candidate cell #2;

[0333] ●CSI of odd-numbered subbands of candidate cell #2;

[0334] ●…

[0335] ●CSI of even-numbered subbands of candidate cell #N;

[0336] ●CSI of odd-numbered subbands of candidate cell #N.

[0337] Optionally, in the CSI part of the two subbands, (when the N candidate cells do not include the candidate cells corresponding to the special cell), the priority of the CSI of the N candidate cells (from high to low / from low to high) is as follows:

[0338] ●CSI of even-numbered subbands of candidate cell #1;

[0339] ●CSI of even-numbered subbands of candidate cell #2;

[0340] ●…

[0341] ●CSI of even-numbered subbands of candidate cell #N;

[0342] ●CSI of odd-numbered subbands of candidate cell #1;

[0343] ●CSI of odd-numbered subbands of candidate cell #2;

[0344] ●…

[0345] ●CSI of odd-numbered subbands of candidate cell #N.

[0346] Optionally, the LTM candidate configuration ID value corresponding to candidate cell #1 is the smallest, the LTM candidate configuration ID value corresponding to candidate cell #2 is the second smallest, and so on. Optionally, the LTM candidate configuration ID value corresponding to candidate cell #n is the nth smallest. See above for the method of numbering candidate cells.

[0347] The above methods clarify the priority of CSI, enabling both the UE and the base station to have a shared understanding of CSI priorities, thus improving the reliability of the communication system. In some cases, since the CSI corresponding to the current special cell can be obtained through non-LTM CSI reporting, the CSI of non-current special cells is more useful than the CSI of the current special cell. The above methods can ensure that the priority of CSI of non-current special cells is different from that of CSI of the current special cell, thereby preventing the CSI of non-special cells from being preferentially ignored and improving the reliability of the communication system.

[0348] The following describes the number of CSI processing units (CPUs) occupied by the first CSI report configuration associated with / corresponding to the CSI report (e.g., O). CPU The method for determining O is briefly explained below. CPU The relevant definitions.

[0349] The UE indicates the number (N) of parallel CSI computations supported in a single CC via a single-component carrier (CC) parallel CSI parameter (e.g., simultaneousCSI-ReportsPerCC). CPU ), and indicates the number (N) of parallel CSI computations supported across all CCs via the full CC parallel CSI parameter (e.g., simultaneousCSI-ReportsAllCC). CPU ). (TheUE indicates the number of supported simultaneous CSI calculations N CPU withparameter simultaneousCSI-ReportsPerCC in a component carrier,andsimultaneousCSI-ReportsAllCC across all component carriers.)

[0350] UE supports N CPUParallel CSI computation refers to the UE having N CPU There are L CSI processing units used for processing CSI reports. On an Orthogonal Frequency Division Multiplexing (OFDM) symbol, if L CPUs are occupied for CSI report calculations, then the UE has N... CPU –L unused CPUs. (If a UE supports N CPU simultaneous CSI calculations it is said tohaveN CPU CSI processing units for processing CSI reports. If L CPUs are occupied for calculation of CSI reports in given OFDM symbol, the UE has N CPU -Lunoccupied CPUs.)

[0351] Optionally, the UE can determine whether at least one of the N CSI reports (e.g., each CSI report) has been updated based on the priority and / or CPU occupancy (e.g., CPU occupancy status, or the number of unoccupied CPUs) corresponding to the N CSI reports. If the N CSI reports begin occupying their respective CPUs on the same OFDM symbol and have N... CPU –L CPUs are not occupied, and each CSI reports n=0,…,N-1 corresponding to O CPU If (n), then the UE is not required to update the N–M lowest priority (required) CSI reports. Here, M refers to the set of N that satisfy the condition 0 ≤ M ≤ N. the maximum value. (If N CSI reports start occupying theirrespective CPUs on the same OFDM symbol on which N CPU -L CPUs are unoccupied,where each CSI reportn=0,…,N-1corresponds to O CPU (n), the UE is not required to update theN-Mrequested CSI reports with lowest priority, where0≤M≤Nis thelargest value such that The processing of a CSI report (e.g., the CSI report corresponding to the first CSI report configuration) occupies a number of CPUs for a number of symbols.

[0352] Optionally, the N CSI reports do not include CSI reports corresponding to / associated with the third CSI reporting configuration. Optionally, the N CSI reports do not include CSI reports corresponding to / associated with the third CSI reporting configuration that meet the third condition.

[0353] Optionally, to determine whether at least one CSI report (e.g., each CSI report) among N CSI reports has been updated, the UE considers that: the N CSI reports do not include the CSI reports corresponding to / associated with the third CSI reporting configuration. Alternatively, to determine whether at least one CSI report (e.g., each CSI report) among N CSI reports has been updated, the UE considers that: the N CSI reports do not include the CSI reports corresponding to / associated with the third CSI reporting configuration that satisfies the third condition.

[0354] Optionally, the CPU usage of the CSI report corresponding to / associated with the third CSI report configuration out of N CSI reports is 0 (e.g., O). CPU =0). Optionally, the number of CPUs occupied by the CSI report corresponding to / associated with the third CSI report configuration that satisfies the third condition among the N CSI reports is 0 (e.g., O). CPU =0).

[0355] Optionally, the CSI report corresponding to / associated with the third CSI reporting configuration among the N CSI reports will not be updated. Optionally, the CSI report corresponding to / associated with the third CSI reporting configuration that meets the third condition among the N CSI reports will not be updated.

[0356] Optionally, to determine whether at least one CSI report (e.g., each CSI report) among N CSI reports has been updated, the UE considers that: the CPU usage of the CSI report corresponding to / associated with the third CSI report configuration among the N CSI reports is 0 (e.g., 0). CPU =0), and / or, the CSI report corresponding to / associated with the third CSI report configuration among the N CSI reports is not updated. Optionally, in order to determine whether at least one CSI report (e.g., each CSI report) among the N CSI reports is updated, the UE considers that: the number of CPUs occupied by the CSI report corresponding to / associated with the third CSI report configuration that satisfies the third condition among the N CSI reports is 0 (e.g., 0). CPU=0), and / or, the CSI report corresponding to / associated with the third CSI report configuration that meets the third condition among N CSI reports will not be updated.

[0357] Optionally, the third condition includes at least one of the following: 1) The CSI report corresponding to / associated with the third CSI reporting configuration occupies CPU; 2) The CSI report corresponding to / associated with the third CSI reporting configuration occupies PU; 3) The CSI report corresponding to / associated with the third CSI reporting configuration is not updated. Optionally, CSI reporting not being updated means not being required to update. Optionally, CSI reporting not being updated means that it is determined by a PU-related method that it is not required to update. The method for determining whether CSI reporting is updated based on PU is described below. Optionally, CSI reporting not being updated means that: for the same OFDM symbol (e.g., for OFDM symbols associated with N CSI reports), CSI reporting is not required to update. Optionally, the UE determines whether CSI reporting is updated based on PU and / or CPU for the same symbol (e.g., OFDM symbol).

[0358] Optionally, the third condition includes at least one of the following: 1) The CSI report corresponding to / associated with the third CSI reporting configuration is not in M; 2) The CSI report corresponding to / associated with the third CSI reporting configuration is not in M. AI middle.

[0359] Optionally, a CSI report not being in M ​​can include: the CSI report not being considered in M, or the CSI report not being in the M CSI reports, or the CSI report not being considered in the M CSI reports, or the CSI report being in NM CSI reports, or the CSI report being considered in NM CSI reports. Optionally, the M CSI reports can be the updated M CSI reports. Optionally, the M CSI reports can be CSI reports numbered 0 to M-1. Optionally, NM CSI reports can be NM CSI reports that are not updated. Optionally, NM CSI reports can be CSI reports numbered M to N-1. Optionally, being updated can include being required to update. Optionally, not being updated can include not being required to update. The methods for determining M and / or the methods for determining the M CSI reports and / or the methods for determining the NM CSI reports are described above.

[0360] Optionally, CSI reporting is not in M AI This could include: CSI reports not being considered in M AI In the middle, or, CSI reported not in M AI In a CSI report, or, a CSI report is not considered in M AI One CSI is being reported, or, CSI is being reported in N. AI-M AI In N CSI reports, or, CSI reports are considered to be in N AI -M AI One CSI report is in progress. Optionally, M AI Each CSI report can be updated to M AI Each CSI report. Optional, M AI Each CSI report can be numbered from 0 to M. AI CSI reporting of -1. Optionally, N AI -M AI Each CSI report can be N that is not updated. AI -M AI Each CSI report. Optional, M AI A CSI report can be numbered M AI To N AI -1 CSI reporting. Optionally, being updated can include being requested to update. Optionally, not being updated can include not being requested to update. M AI The method of determination and / or M AI The determination method and / or N reported by each CSI AI -M AI The method for determining the CSI report is described above.

[0361] To determine whether at least one of N CSI reports (or, each CSI report) has been updated, or to determine whether N AI Whether at least one CSI report (or each CSI report) in the CSI reports has been updated, the UE can determine this based on M and / or M. AI The number of PUs and / or CPUs occupied by the third CSI reporting configuration corresponding to / associated with N CSI reporting configurations is considered to be 0. See above for details. Once the number of CPUs and / or PUs occupied by some third CSI reporting configurations corresponding to / associated with CSI reporting configurations is considered to be 0, M and / or M... AI This will change. This will cause the UE and base station to communicate with each other regarding M and / or M. AI Inconsistent understandings have led to CSI reports not being updated correctly. The following methods can clarify M and / or M AI How is this determined to avoid UE and base station conflicts with M and / or M? AI Inconsistent understandings have improved the reliability of the communication system. Optionally, M and / or M AIThe number of CPUs and / or PUs occupied corresponding to the CSI report is determined before it is considered to be 0. Optionally, the CSI report includes: the CSI report corresponding to / associated with the third CSI report configuration. Optionally, the CSI report includes: any of the CSI reports, or at least one CSI report, or all of the CSI reports. Optionally, the CSI report includes: any one of N CSI reports, or at least one of N CSI reports, or all of the N CSI reports. Optionally, the CSI report includes: N AI Any one of the CSI reports, or, N AI At least one of the CSI reports is made, or, N AI All CSI reports in a single CSI report.

[0362] Optionally, the CPU usage of the CSI report corresponding to / associated with the third CSI reporting configuration includes at least one of the following: 1) CPU usage of the CSI report corresponding to / associated with the third CSI reporting configuration (e.g., 0 CPU 1) Greater than 0; 2) The CPU usage of the CSI report corresponding to / associated with the third CSI report configuration (e.g., 0) CPU ) equals the first value; 3) the CPU (e.g., O) occupied by the CSI report corresponding to / associated with the third CSI report configuration. CPU The first value is greater than the first value. The first value can be a positive integer. For example, the first value can be one of 1, 2, 3, 4, 5, 6, 7, or 8.

[0363] Optionally, the PU occupied by the CSI reporting corresponding to / associated with the third CSI reporting configuration includes at least one of the following: 1) the PU occupied by the CSI reporting corresponding to / associated with the third CSI reporting configuration (e.g., O PU 1) Greater than 0; 2) The PU (e.g., O) occupied by the CSI reporting configuration corresponding to / associated with the third CSI reporting configuration. PU The second value is greater than or equal to the first value. The second value can be a positive integer. For example, the second value can be one of 1, 2, 3, 4, 5, 6, 7, or 8.

[0364] Optionally, the UE first determines whether the CSI report has been updated (e.g., whether it can be updated) based on the PU, and then determines whether the CSI report has been updated based on the CPU. Alternatively, the UE first determines whether the CSI report has been updated based on the PU, and then determines whether the CSI report has been updated based on the updated CSI report (or, non-updated CSI report) determined by the PU and the CPU. For example, for an OFDM symbol, the UE first determines X CSI reports that have not been updated based on the PU, where X ≥ 0. For that OFDM symbol, the UE then excludes CSI reports from the N CSI reports that are identical to at least one of the X CSI reports, and performs the above operations based on the remaining CSI reports (e.g., operations to determine whether the CSI report has been updated, or operations to determine whether the CSI report has been updated based on the CPU). For example, for an OFDM symbol, the UE first determines X CSI reports that have not been updated based on the PU, where X ≥ 0. For this OFDM symbol, the UE performs the above operation based on CSI reports that are not among the N CSI reports (or, not at least one of the X CSI reports). This operation could be used to determine whether a CSI report has been updated, or it could be based on the CPU to determine whether a CSI report has been updated. For example, for an OFDM symbol, the UE first determines that X CSI reports have been updated based on the PU, where X ≥ 0. For this OFDM symbol, the UE then performs the above operation based on CSI reports that are among the N CSI reports (or, are at least one of the X CSI reports). This operation could be used to determine whether a CSI report has been updated, or it could be based on the CPU to determine whether a CSI report has been updated.

[0365] The above method allows the UE to first determine which CSI reports will not be updated via the PU. Since these non-updated CSI reports do not require corresponding CPU usage, when determining which CSI reports will not be updated via the CPU, the above method can exclude these CSI reports (e.g., CSI reports that will not be updated based on the PU), thus avoiding duplicate calculations, increasing the number of CSI reports that can be updated, and improving system efficiency.

[0366] In this article, the first CSI reports the configuration corresponding to / associated with O. CPU It can be the O reported by the CSI corresponding to / associated with the first CSI report configuration. CPU Optionally, the first CSI reports the number of CPUs occupied (O) corresponding to / associated with the configuration. CPUThe number of reference signal resources N corresponding to the candidate cells can be determined based on at least one of the following: Optionally, the number of CPUs occupied by the CSI reporting corresponding to the first CSI reporting configuration is the sum of the number of reference signal resources corresponding to each of the N candidate cells. For example, the CSI reporting corresponding to the first CSI reporting configuration... Among them, K i This refers to the number of reference signal resources corresponding to candidate cell #i. Candidate cell #i refers to the i-th candidate cell among N candidate cells.

[0367] The above methods clarify the amount of CPU used for CSI reporting in LTM, enabling the UE and base station to have a common understanding of the amount of CPU used for CSI reporting, thereby improving the reliability of the communication system.

[0368] The method for determining the priority value reported by CSI is discussed below. Optionally, CSI reports the associated / corresponding priority (e.g., priority value, Pri). iCSI The value is determined / calculated using the following formula 1:

[0369] Pri iCSI (y,k,c,s)=2·N cells ·M s ·y+N cells ·M s ·k+M s ·c+s (Formula 1)

[0370] The meanings and / or values ​​of each parameter are as follows:

[0371] ●The values ​​of y are determined as follows:

[0372] ■ For aperiodic CSI reports carried on PUSCH, y=0 (y=0 for aperiodic CSI reports to be carried on PUSCH);

[0373] ■ For semi-persistent CSI reports carried on PUSCH, y=1;

[0374] ■ For semi-persistent CSI reports carried on PUCCH, y=2 (y=2 for semi-persistent CSI reports to be carried on PUCCH);

[0375] ■ For periodic CSI reports carried on PUCCH, y=3 (y=3 for periodic CSI reports to be carried on PUCCH).

[0376] ●The values ​​of k are selected as follows:

[0377] ■ For CSI reports carrying L1-RSRP or L1-SINR, k = 0; for CSI reports not carrying L1-RSRP or L1-SINR, k = 1.

[0378] ●c refers to the serving cell index.

[0379] ■Optionally, for CSI reporting configured for LTM, c refers to the serving cell index value where the report configuration is configured.

[0380] ■Optionally, for CSI reporting that carries L1-RSRP or L1-SINR and is configured with CSI reporting configuration for LTM, c refers to the serving cell index value where the report configuration is configured.

[0381] ■Optionally, for CSI reporting configured for LTM that does not carry L1-RSRP or L1-SINR, c refers to the serving cell index value where the report configuration is configured.

[0382] ●N cells This refers to the value of the high-level parameter (N) cellsThe value of the higher-layer parameter is used to represent the maximum number of serving cells, for example, maxNrofServingCells. Optionally, this higher-layer parameter is a UE capability indicator.

[0383] ●s refers to the report configuration ID parameter (s is the reportConfigID), for example, the report configuration ID parameter corresponding to CSI reporting. Optionally, for CSI reporting configured for LTM, s refers to the ID of the CSI reporting configuration for LTM (LTM-CSI-ReportConfigID).

[0384] ●M s This refers to the value of the high-level parameter (M) s (is the value of the higher layer parameter). Optionally, for CSI reporting configured for LTM, M s This refers to the maximum number of CSI reporting configurations used for LTM (e.g., maxNrofLTM-CSI-ReportConfigurations).

[0385] Optionally, if the time-domain resources of the physical channels scheduled to carry the CSI reports overlap in at least one OFDM symbol and are transmitted on the same carrier, then the two CSI reports are said to collide.

[0386] Optionally, if the values ​​of y reported by the two CSIs are different, then the one with the higher Pri value in the two CSI reports is considered the better. iCSI CSI reports with values ​​(y, k, c, s) are not sent by the UE. Optionally, if two CSI reports have the same value for y, the two CSI reports can be multiplexed, or one of the two CSI reports can be dropped based on a priority value.

[0387] In this article, CSI reporting configured for LTM refers to CSI reporting corresponding to the CSI reporting configuration for LTM.

[0388] Optionally, the priority of two CSI reports configured for LTM can be determined based on the CSIs (or, the CSI candidate cells) in these two CSI reports. Optionally, if two CSI reports configured for LTM have the same priority... iCSI Given the (y,k,c,s) values, the priority of these two CSI reports can be determined based on the CSIs (or, the CSI candidate cells) in these two CSI reports. iCSI The calculation method for (y,k,c,s) values ​​is described above. Optionally, the priority of these two CSI reports can be determined based on whether the candidate cell corresponding to the CSI in these two CSI reports is a current special cell. Optionally, if the candidate cells corresponding to the CSI in these two CSI reports are the same and are current special cells, then the two CSI reports have the same priority. Optionally, if the candidate cells corresponding to the CSI in these two CSI reports are both current special cells, then the two CSI reports have the same priority. Optionally, if the candidate cells corresponding to the CSI in these two CSI reports are not current special cells, then the two CSI reports have the same priority. Optionally, if the candidate cell corresponding to the CSI in one of these two CSI reports is a current special cell, and the candidate cell corresponding to the CSI in the other CSI report is not a current special cell, then the two CSI reports have different priorities.

[0389] Optionally, if the candidate cell corresponding to the CSI in the first CSI report of these two CSI reports is a current special cell, and the candidate cell corresponding to the CSI in the second CSI report of these two CSI reports is not a current special cell, then the priority of the first CSI report is lower than the priority of the first CSI report. Alternatively, if the candidate cell corresponding to the CSI in the first CSI report of these two CSI reports is not a current special cell, and the candidate cell corresponding to the CSI in the second CSI report of these two CSI reports is a current special cell, then the priority of the first CSI report is lower than the priority of the first CSI report.

[0390] Since the CSI corresponding to the current special cell can be obtained through non-LTM CSI reporting, the CSI of non-current special cells is more useful than the CSI of the current special cell. The above method can make the CSI of non-current special cells have a different priority than the CSI of the current special cell. For example, this avoids the CSI of non-current special cells being discarded first, thus improving the reliability of the communication system.

[0391] In some cases, because the rank in the CSI report (e.g., the rank indicated by the RI) is selected / determined by the UE, the base station may not know the rank reported by the UE before demodulating the uplink channel (e.g., PUSCH or PUCCH). In some situations (different reported ranks may correspond to different payload / information bit counts), this can affect the behavior of some UEs, such as the determination of PUCCH resources, the determination of the number of physical resource blocks (PRBs) corresponding to the resources, or the determination of the number of CSI reports in CSI Part 2. A feasible approach is for both the base station and the UE to use the same predefined rank assumption. This way, the aforementioned UE behavior is independent of the rank reported by the UE, avoiding different interpretations between the UE and the base station, thereby improving the reliability of the communication system. Specifically, the UE assumes that the rank in the CSI report is a predefined rank, or the highest allowed rank configured. The predefined rank can be one of rank 1, rank 2, rank 3, or rank 4. The following example uses rank 1 in CSI reporting. For instance, (UE) assumes that the CSI reporting indicates rank 1. For instance, (UE) assumes that the RI in the CSI reporting indicates rank 1. For instance, (UE) performs the above UE behavior based on the assumption that the CSI reporting indicates rank 1. For instance, when the first condition is met, based on the assumption that the CSI / RI corresponding to each of the N candidate cells indicates rank 1, the UE determines the number of PUCCH resources and / or the number of PRBs corresponding to the PUCCH resources, or determines the number of CSI reports including CSI part 2 (referred to in this disclosure as CSI part 2 CSI report). The first condition includes at least one of the following:

[0392] ●The UE will reuse CSI reports (CSI part 2 CSI reports) that include Part 2 CSI reports in a PUCCH resource.

[0393] ●CSI reporting includes CSIs corresponding to / associated with N candidate cells;

[0394] ●The first CSI reporting configuration (or the configured reporting parameters) must include at least the following parameters:

[0395] 'RI';

[0396] ● The reporting quantity parameter (e.g., reportQuantity) corresponding to (or configured) the first CSI reporting configuration is set to at least one of 'cri-RI-PMI-CQI', 'cri-RI-LI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', and 'cri-RI-CQI'.

[0397] ● The reporting quantity parameter (e.g., reportQuantity) corresponding to (or configured) the first CSI reporting configuration is set to at least one of 'cri-RI-PMI-CQI', 'cri-RI-LI-PMI-CQI', 'cri-RI-i1-CQI', and 'cri-RI-CQI'.

[0398] ● N is determined (see above for the method of determining N);

[0399] ●The first CSI report configuration includes parameters indicating N;

[0400] ●The resource set (used for channel measurement) corresponding to the first CSI report configuration includes more than 1 resource;

[0401] ● The number of resources included in the resource set (used for channel measurement) corresponding to the first CSI reporting configuration is greater than or equal to 2.

[0402] Since the number of resources corresponding to a CSI in a CSI report (e.g., N) can be selected / determined by the UE, the base station may not know how many resources the CSI reported by the UE corresponds to before demodulating the uplink channel (e.g., PUSCH or PUCCH). In some cases (different CSIs may correspond to different numbers of payload / information bits), this can affect the behavior of some UEs, such as the determination of PUCCH resources, the determination of the number of PRBs for the corresponding resources, or the determination of the number of CSIs reported in CSI Part 2. One feasible approach is for both the base station and the UE to use the same predefined assumption of the number of resources corresponding to a CSI (e.g., N). In this way, the aforementioned UE behavior is independent of the number of resources corresponding to the CSI reported by the UE (e.g., N), thereby avoiding different understandings between the UE and the base station and improving the reliability of the communication system. The specific method is as follows, using N as an example: (UE) assumes that the N corresponding to the CSI report is predefined (e.g., one of 1, 2, 3, or 4), or that N equals K. When the second condition is met, based on the assumption that N is predefined (e.g., N is one of 1, 2, 3, 4), or based on the assumption that N is based on / equal to the value indicated by the maximum value parameter related to UE capabilities, the UE determines the number of PUCCH resources and / or the number of PRBs corresponding to the PUCCH resources, or determines the number of CSI reports in CSI Part II. When the second condition is met, it assumes at least one of the following: N is predefined (e.g., one of 1, 2, 3, 4), or N equals K, or N is based on / equal to the value indicated by the maximum value parameter related to UE capabilities, and the UE determines the number of PUCCH resources and / or the number of PRBs corresponding to the PUCCH resources, or determines the number of CSI reports in CSI Part II. The second condition includes at least one of the following:

[0403] ●The UE will reuse CSI reports (CSI part 2 CSI reports) that include Part 2 CSI reports in a PUCCH resource.

[0404] ●CSI reporting includes the CSIs corresponding to N candidate cells;

[0405] ●The first CSI reporting configuration (or the configured reporting parameters) must include at least the following parameters:

[0406] 'RI';

[0407] ● The reporting quantity parameter (e.g., reportQuantity) corresponding to (or configured) the first CSI reporting configuration is set to at least one of 'cri-RI-PMI-CQI', 'cri-RI-LI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', and 'cri-RI-CQI'.

[0408] ● The reporting quantity parameter (e.g., reportQuantity) corresponding to (or configured) the first CSI reporting configuration is set to at least one of 'cri-RI-PMI-CQI', 'cri-RI-LI-PMI-CQI', 'cri-RI-i1-CQI', and 'cri-RI-CQI'.

[0409] The first CSI reported configuration includes parameters indicating N.

[0410] In some cases, the UE can receive / be configured to receive CSI reports.

[0411] Optionally, the CSI reporting configuration may indicate / include an associated set of reference resources. Optionally, the set of reference resources may include: a set of reference resources for channel measurements and / or a set of reference resources for interference measurements. Optionally, the set of reference resources may include K reference signal resources. Optionally, the set of reference resources for channel measurements may include K reference signal resources. Optionally, K ≥ 1 or K > 1. Optionally, the reference signal resources may be CSI-RS resources. Optionally, the reference signal resources may be NZP CSI-RS resources. Optionally, the K reference signal resources have the same number of antenna ports. For example, a reference signal resource has P antenna ports. CSI-RS Optionally, the total number of antenna ports for the K reference signal resources can be denoted as P. total Optionally, P total =P CSI-RS *K. Optionally, the number of antenna ports of a reference signal resource can be indicated by configuration information (e.g., nrofPorts) associated with that reference signal resource. Optionally, one of the K reference signal resources (or each reference signal resource) can be configured with a power control offset parameter (e.g., powerControlOffset). Optionally, the power control offset parameter of the K reference signal resources can be the same. Optionally, the value of the power control offset parameter of the K reference signal resources is the same. Optionally, the corresponding value of the power control offset parameter of the K reference signal resources is the same. Optionally, the power control offset parameter can be used for CSI calculation (e.g., CQI calculation).

[0412] Optionally, the CSI reporting configuration may indicate / include configuration parameters for the associated codebook. Optionally, the codebook type associated with the CSI reporting configuration may be a refined codebook. A refined codebook may include at least one of the following: a refined Type I codebook, a refined Type II codebook, a refined FeType II Port Selection codebook, or a refined eType II codebook for predicted PMI. Optionally, a refined Type I codebook may include: a refined Type I Single-Panel Codebook and / or a refined Type I Multi-Panel Codebook.

[0413] For example, the codebook type associated with the CSI reporting configuration can be determined by the codebook parameters indicated / included in the CSI reporting configuration. For example, when the codebook parameter indicated / included in the CSI reporting configuration (e.g., codebookType) is set to a first value (e.g., 'typeI-SinglePanel-r19'), the CSI reporting configuration is associated with an improved type-one single-panel codebook. For example, when the codebook parameter indicated / included in the CSI reporting configuration (e.g., codebookType) is set to a second value (e.g., 'typeI-MultiPanel-r19'), the CSI reporting configuration is associated with an improved type-one multi-panel codebook.

[0414] Optionally, the CSI reporting configuration may indicate / include one or more sub-configurations. Optionally, the CSI reporting configuration may indicate / include L sub-configurations. Optionally, L≥1 or L≥2. Optionally, the UE may report CSIs associated with N sub-configurations out of the L sub-configurations. For example, the UE may report the CSI of each of the N sub-configurations out of the L sub-configurations. Optionally, the CSIs associated with the N sub-configurations can be carried out through CSI reporting. Optionally, the CSIs associated with the N sub-configurations can be reported in a single reporting instance. Optionally, N≤L. Optionally, N≥1.

[0415] Optionally, when CSI reporting is periodic, N = L. The UE reports L CSIs associated with sub-configurations.

[0416] Optionally, when CSI reporting is semi-persistent on the PUSCH, N is indicated by the associated trigger state. For example, the UE receives / detects a DCI indicating a CSI trigger state, where the trigger state indicates N sub-configurations out of L sub-configurations. The UE reports the CSIs associated with the N sub-configurations. Optionally, the CSI trigger state is indicated / configured by the base station.

[0417] Optionally, when CSI reporting is semi-persistent on the PUCCH, N is indicated by the associated MAC-CE. For example, the UE receives / detects a MAC-CE that activates the CSI reporting. This MAC-CE indicates N sub-configurations out of L sub-configurations. The UE reports the CSI associated with the N sub-configurations.

[0418] Optionally, when CSI reporting is aperiodic, N is indicated by the associated trigger state. For example, the UE receives / detects a DCI indicating a CSI trigger state, where the trigger state indicates N sub-configurations out of L sub-configurations. The UE reports the CSIs associated with the N sub-configurations. Optionally, the CSI trigger state is indicated / configured by the base station.

[0419] Optionally, one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) can be configured with a subset of ports. Optionally, the subset of ports for a sub-configuration can be configured using a bitmap. For example, the sub-configuration may include parameters for indicating the bitmap (e.g., portSubsetIndicator-r19). Optionally, the bitmap may include K*P. CSI-RS 1 bit (or, including P) total (bits). For example, a bitmap can include bit sequences. Optionally, one bit in the bitmap (e.g., a bit sequence) corresponds to one antenna port of one of the K reference signal resources. Optionally, one / each bit in the bitmap (e.g., a bit sequence) corresponds to P of the K reference signal resources. total One of the antenna ports. Optionally, when the value of a bit is a third value (e.g., 0), the corresponding antenna port is disabled. Optionally, when the value of a bit is a third value (e.g., 0), the corresponding antenna port is not included in the subset of antenna ports. Optionally, when the value of a bit is a fourth value (e.g., 1), the corresponding antenna port is enabled. When the value of a bit is a fourth value (e.g., 1), the corresponding antenna port is included in the subset of antenna ports.

[0420] Optionally, one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) can be configured with a codebook parameter. For example, when the codebook parameter corresponding to a sub-configuration is set to a first value, the sub-configuration is associated with an improved type-one single-pane codebook. For example, when the codebook parameter corresponding to a sub-configuration is set to a second value, the sub-configuration is associated with an improved type-one multi-pane codebook.

[0421] Optionally, when the codebook parameter corresponding to a sub-configuration is set to a first value, the sub-configuration may indicate parameters N1 and N2 associated with the codebook. Here, N1 may be the number of antenna ports in the first dimension. N2 may be the number of antenna ports in the second dimension. Optionally, P' = 2 * N1 * N2, where P' refers to the number of bits of the fourth value in the bitmap indicated by the sub-configuration. Optionally, the UE determines the CSI (e.g., PMI and / or CQI) of the sub-configuration based on N1 and N2.

[0422] Optionally, when a codebook parameter corresponding to a sub-configuration is set to a second value, the sub-configuration may indicate at least one of the parameters N1, N2, and Ng associated with the codebook. Here, N1 may be the number of antenna ports in the first dimension. N2 may be the number of antenna ports in the second dimension. Ng may be the number of antenna port groups. Optionally, P' = 2 * Ng * N1 * N2, where P' refers to the number of bits of the fourth value (e.g., a value of 1) in the bitmap indicated by the sub-configuration. Optionally, Ng = K. Optionally, the UE determines the CSI (e.g., PMI and / or CQI) of the sub-configuration based on at least one of N1, N2, and Ng.

[0423] Optionally, one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) can be configured with a power offset. Optionally, the power offset can be indicated by a power offset parameter (e.g., powerOffset). Optionally, the power offset corresponds to X dB. Optionally, X can be indicated by the power offset parameter. Optionally, X can be an integer. Optionally, X can be an integer greater than or equal to 0. Optionally, X can be an integer between 0 and 23. The above method clearly defines the indication method / value range of the power offset, avoiding the base station / UE using incorrect methods / value ranges to indicate the power offset, thus improving the reliability of the communication system.

[0424] In the following description, the reference signal resource is CSI-RS resource as an example. Optionally, the UE determines / calculates the CSI (e.g., CQI) of a sub-configuration based on the ratio of PDSCH EPRE and CSI-RS EPRE. Optionally, CSI-RS EPRE refers to: CSI-RS EPRE for K CSI-RS resources. For example, if a sub-configuration indicates a power offset (e.g., a power offset indicated by a power offset parameter), the ratio of PDSCH EPRE and CSI-RS EPRE is determined based on the power offset indicated by that sub-configuration for CSI calculation (e.g., CQI calculation). Optionally, the UE determines / calculates the CQI of a sub-configuration based on the ratio of PDSCH EPRE and CSI-RS EPRE. Optionally, the UE determines / calculates the CQI of a sub-configuration based on (an assumption) the ratio of PDSCH EPRE and CSI-RS EPRE. Optionally, for CQI calculation of a sub-configuration, the UE assumes / determines a ratio of EPRE to CSI-RS EPRE for the corresponding PDSCH signals transmitted on the antenna ports of a CSI-RS resource. Optionally, this ratio (e.g., the ratio of PDSCH EPRE to CSI-RS EPRE) is determined based on at least one of the following: the power control offset parameter of the CSI-RS resource (e.g., powerControlOffset), the power offset associated / indicated / configured by the sub-configuration, the number of ports of the CSI-RS resource (e.g., the number of ports configured via the higher-layer parameter nrofPorts), and the number of ports in the sub-configuration associated / indicated / configured port subset. Here, the number of ports of the CSI-RS resource (e.g., the number of ports configured / indicated by the parameter nrofPorts) is denoted as P0. Here, the number (or total number) of ports in the port subset associated with / indicated / configured by the sub-configuration is denoted as P. In this disclosure, the term "number of ports in a port subset" may be interchanged with "number of ports in a port subset indicated by a higher-level parameter (e.g., port-subsetIndicator)" or "number of all bits with a value of 1 indicated / corresponding to a higher-level parameter (e.g., port-subsetIndicator)". Optionally, this ratio is based on / equal to at least one of the following:

[0425] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource.

[0426] and The sum of the values. Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource and the sum of the values. The product (in a linear proportion). For example, if powerControlOffset is 3dB, P = 16, and P0 = 32, then the ratio is 0dB;

[0427] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource.

[0428] and The sum of the values. Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource and the sum of the values. The product (in a linear proportion). For example, if powerControlOffset is 3dB, P = 16, and P0 = 32, then the ratio is 6dB;

[0429] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource.

[0430] With 10log 10 The sum of (P). Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource divided by 10log 10 The product of (P) (in a linear proportion). For example, if powerControlOffset is 3dB and P = 16, then the ratio is 15dB;

[0431] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource.

[0432] and The sum of the values. Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource and the sum of the values. (in a linear proportion)

[0433] Product. For example, if powerControlOffset is 3dB and P = 16, then the ratio is -9dB;

[0434] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource is compared with 10log 10 The sum of (P0). Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource divided by 10log 10 The product of (P0) (in a linear proportion). For example, if powerControlOffset is 3dB and P0 = 32, then the ratio is 18dB;

[0435] ●Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource is compared with... The sum of the values. Optionally, this ratio is equal to the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource and the sum of the values. The product (in a linear proportion). For example, if powerControlOffset is 3dB and P0 = 32, then the ratio is -12dB;

[0436] ● Optionally, the difference between the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource and the power offset. For example, the ratio can be based on / equal to the difference between the power control offset parameter (e.g., powerOffset) of the reference signal resource and the power offset indicated by the sub-configuration;

[0437] ● Optionally, the power control offset parameter (e.g., powerControlOffset) of the CSI-RS resource is summed with the power offset. For example, the ratio may be based on / equal to the sum of the power control offset parameter (e.g., powerOffset) of the reference signal resource and the power offset indicated by the sub-configuration.

[0438] Optionally, when the third condition is met, one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) is configured with a power offset parameter. Optionally, when the third condition is met, one of the N sub-configurations (or at least one sub-configuration, or each sub-configuration) is configured with a power offset parameter. Optionally, configuring a sub-configuration with a power offset parameter means that the field corresponding to the power offset parameter in that sub-configuration is mandatory. Optionally, the field corresponding to the power offset parameter can be a field in RRC parameters. Optionally, the field corresponding to the power offset parameter can be a field in RRC signaling. Optionally, the third condition includes at least one of the following: 1) a subset of ports configured in one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration); 2) the codebook parameter corresponding to one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) is set to a first value; 3) the codebook parameter corresponding to one of the L sub-configurations (or at least one sub-configuration, or each sub-configuration) is set to a second value; 4) a subset of ports configured in one of the N sub-configurations (or at least one sub-configuration, or each sub-configuration); 5) the codebook parameter corresponding to one of the N sub-configurations (or at least one sub-configuration, or each sub-configuration) is set to a first value; 6) the codebook parameter corresponding to one of the N sub-configurations (or at least one sub-configuration, or each sub-configuration) is set to a second value; 7) the codebook parameter corresponding to / associated with the CSI reporting configuration is set to a first value; 8) the codebook parameter corresponding to / associated with the CSI reporting configuration is set to a second value. The above methods enable the base station to further compensate for power changes caused by variations in the number of ports within the port subset when a port subset is configured, thereby improving the flexibility of the communication system.

[0439] Optionally, the UE determines the CSI (e.g., PMI / CQI) based on the antenna ports in the subset of antenna ports indicated by the sub-configuration.

[0440] In some cases, a base station can send CSI reporting configuration. For example, a base station can send CSI reporting configuration via RRC signaling. A base station can receive CSI reports associated with CSI reporting configuration. For example, a base station can receive CSI reports where the CSI report carries the CSI associated with the CSI reporting configuration.

[0441] In some cases, the UE can receive / be configured with a third CSI reporting configuration. The UE can receive / be configured with one or more third CSI reporting configurations. In this document, the third CSI reporting configuration and / or the associated / corresponding CSI reporting can be based on Artificial Intelligence / Machine Learning (AI / ML). In this document, the term "AI / ML" can be used interchangeably with the term "AI / ML model" or simply "model". Optionally, the third CSI reporting configuration and / or the associated / corresponding CSI reporting can be used for inference. In this document, inference can include: for prediction. In this document, the terms "inference" and "prediction" can be used interchangeably. Optionally, the third CSI reporting configuration and / or the associated / corresponding CSI reporting can be used to report inference results. In this document, inference can be based on an AI / ML model. Optionally, the third CSI reporting configuration and / or the CSI reports associated with / corresponding to the third CSI reporting configuration can be used for model monitoring. In this paper, model monitoring can be the monitoring of AI / ML models. Optionally, the third CSI reporting configuration and / or the CSI reports associated with / corresponding to the third CSI reporting configuration can be used for training. In this paper, training can be the training of AI / ML models. Optionally, the third CSI reporting configuration and / or the CSI reports associated with / corresponding to the third CSI reporting configuration can be used for data collection. In this paper, data collection can be data collection for AI / ML models.

[0442] Optionally, the third CSI reporting configuration can be used for CSI acquisition. Optionally, the third CSI reporting configuration can be used for CSI prediction. Optionally, the third CSI reporting configuration can be used for beam prediction. Optionally, the predicted reporting amount corresponds to the third CSI reporting configuration. Optionally, the UE can report the predicted reporting amount based on the third CSI reporting configuration. Optionally, the reporting amount can include at least one of: CRI, SSBRI, L1-RSRP, LI-SINR, PMI, RI, CQI, and LI. Optionally, the third CSI reporting configuration can indicate the configuration of one or more reference signals. Optionally, the third CSI reporting configuration can indicate the configuration of one or more reference signals for channel measurement. Optionally, the third CSI reporting configuration can indicate the configuration of one or more reference signals for interference measurement.

[0443] Optionally, the UE may send a corresponding CSI report based on the third CSI reporting configuration. Optionally, the UE may determine / generate the corresponding CSI based on the measurement of the reference signal indicated by the third CSI reporting configuration. Optionally, the UE may send a corresponding CSI report based on the measurement of the reference signal indicated by the third CSI reporting configuration.

[0444] For model inference of AI / ML models on the UE side, since the total computing resources of the UE are limited, it is necessary to specify / determine the computing resources required by the UE during model inference (or prediction) so that the base station can reasonably allocate the UE's computing resources. In this application, the term "computing resources" can be used interchangeably with at least one of the terms "computing power," "computing capability," "occupied computing resources," "consumed computing resources," "processing resources," and "processing unit (PU)." Optionally, computing resources can be used for AI / ML. Optionally, computing resources can be used for parallel computing. Optionally, computing resources can be used for storage. Optionally, computing resources can be used for storage related to AI / ML calculations. Optionally, computing resources can be used for CSI calculation. Optionally, computing resources can be used for prediction. Optionally, computing resources can be used for calculating predicted CSI. Optionally, computing resources can be processing units different from the CPU. Optionally, computing resources can be CPU-independent processing units. Optionally, computing resources can be processing units independent of the CPU. Optionally, the CSI reports corresponding to / associated with the third CSI reporting configuration may only occupy CPU, or only PU, or both CPU and PU. Optionally, computing resources are used for CSI reports associated with the third CSI reporting configuration. The following describes the CSI processing criteria using PU as an example.

[0445] Optionally, the UE can report the N supported by the UE through UE capability signaling. PU The value of N, where N PU This indicates the number of PUs, or the maximum number of PUs. Optionally, the UE can report the N supported by the UE via UE capability signaling. PU Each computation (e.g., CSI computation). Optionally, the UE can indicate the number of parallel computations (N) supported in a CC via a first parameter. PU ), and / or, by the second parameter indicating the number (N) of parallel CSI computations supported across all CCs. PU )(The UE indicates thenumber of supported simultaneous calculations N PUwith first parameter inacomponent carrier,and / or second parameter across all component carriers).

[0446] Optionally, the UE supports N PU Each calculation refers to the UE having N PU One PU is used to process CSI reports. (If a UE supports N PU simultaneous calculations it is said to have N PU Processing units for processing CSI reports). On an Orthogonal Frequency Division Multiplexing (OFDM) symbol, if L PU If one PU is used for CSI reporting calculation, then the UE has N PU –L PU An unused CPU. If L PU PUs are occupied for calculation of CSI reports in a given OFDM symbol, the UE has N PU -L PU (unoccupiedCPUs). Here, CSI reporting may include CSI reporting associated with a third CSI reporting configuration. In this document, the term "OFDM symbol" may be used interchangeably with the term "time-domain unit".

[0447] Optionally, the UE can be based on N AI Each CSI reports its corresponding priority and / or PU occupancy (e.g., PU occupancy status, or the number of unoccupied PUs) to determine N. AI Whether at least one of the CSI reports (e.g., each CSI report) has been updated. If N AI Several CSI reports indicate that they are starting to occupy their respective PUs on the same OFDM symbol and that there are N on these symbols. PU –L PU None of the PUs are occupied. Each CSI reports n=0,…,N AI -1 corresponds to O PU If (n), then the UE is not required to update N. AI -M AI The lowest priority (required) CSI report is submitted. Here, M... AI This refers to 0≤M AI ≤NAI China satisfies The maximum value of N. AI CSI reports start occupying their respective PUs on the same OFDM symbol on which N PU -L PU PUs are unoccupied,where each CSI reportn=0,…,N AI -1 correspondence to O PU (n),the UE is not required to update the N AI -M AI (requested)CSI reports with lowest priority,where 0≤M AI ≤N AI is the largest value such that The processing of a CSI report occupies a number of CPUs for a number of symbols. Here, the term "OFDM symbol" can be used interchangeably with the term "time-domain unit".

[0448] Optionally, N AI Each CSI report does not include CSI reports corresponding to / associated with the third CSI report configuration. Optionally, N AI Each CSI report does not include the CSI report corresponding to / associated with the third CSI report configuration that meets the fourth condition.

[0449] Optionally, in order to determine N AI Whether at least one CSI report out of the CSI reports (e.g., each CSI report) has been updated, the UE considers: N AI Each CSI report does not include CSI reports corresponding to / associated with the third CSI report configuration. Optionally, in order to determine N AI Whether at least one CSI report out of the CSI reports (e.g., each CSI report) has been updated, the UE considers: N AI Each CSI report does not include the CSI report corresponding to / associated with the third CSI report configuration that meets the fourth condition.

[0450] Optionally, NAI The number of PUs occupied by the third CSI report configuration corresponding to / associated with the CSI report in a CSI report is 0 (e.g., 0). PU =0). Optionally, N AI The number of PUs occupied by the CSI report corresponding to / associated with the third CSI report configuration that meets the fourth condition in a CSI report is 0 (e.g., 0). PU =0).

[0451] Optionally, N AI In a CSI report, the CSI report corresponding to / associated with the third CSI report configuration is not updated. Optionally, N AI In a CSI report, the CSI report corresponding to or associated with the third CSI report configuration that meets the fourth condition will not be updated.

[0452] Optionally, in order to determine N AI Whether at least one CSI report out of the CSI reports (e.g., each CSI report) has been updated, the UE considers: N AI The number of PUs occupied by the third CSI report configuration corresponding to / associated with the CSI report in a CSI report is 0 (e.g., 0). PU =0), and / or, N AI In a CSI report, the CSI report corresponding to / associated with the third CSI report configuration is not updated. Optionally, in order to determine N AI Whether at least one CSI report out of the CSI reports (e.g., each CSI report) has been updated, the UE considers: N AI The number of PUs occupied by the CSI report corresponding to / associated with the third CSI report configuration that meets the fourth condition in a CSI report is 0 (e.g., 0). PU =0), and / or, N AI In a CSI report, the CSI report corresponding to or associated with the third CSI report configuration that meets the fourth condition will not be updated.

[0453] Optionally, the fourth condition includes at least one of the following: 1) The CSI report corresponding to / associated with the third CSI reporting configuration occupies CPU; 2) The CSI report corresponding to / associated with the third CSI reporting configuration occupies PU; 3) The CSI report corresponding to / associated with the third CSI reporting configuration is not updated. Optionally, "CSI report not updated" means that it is not required to be updated. Optionally, "CSI report not updated" means that it is determined by a CPU-related method that it is not required to be updated. The method for determining whether a CSI report is updated based on CPU is described above. Optionally, "CSI report not updated" means: for the same OFDM symbol (e.g., for N... AIThe CSI report is for the relevant OFDM symbol, and the CSI report is not required to be updated. Optionally, the UE determines whether the CSI report has been updated based on the PU and / or CPU for the same symbol (e.g., OFDM symbol).

[0454] Optionally, the fourth condition includes at least one of the following: 1) The CSI report corresponding to / associated with the third CSI reporting configuration is not in M; 2) The CSI report corresponding to / associated with the third CSI reporting configuration is not in M. AI middle.

[0455] Optionally, a CSI report not being in M ​​can include: the CSI report not being considered in M, or the CSI report not being in the M CSI reports, or the CSI report not being considered in the M CSI reports, or the CSI report being in NM CSI reports, or the CSI report being considered in NM CSI reports. Optionally, the M CSI reports can be the updated M CSI reports. Optionally, the M CSI reports can be CSI reports numbered 0 to M-1. Optionally, NM CSI reports can be NM CSI reports that are not updated. Optionally, NM CSI reports can be CSI reports numbered M to N-1. Optionally, being updated can include being required to update. Optionally, not being updated can include not being required to update. The methods for determining M and / or the methods for determining the M CSI reports and / or the methods for determining the NM CSI reports are described above.

[0456] Optionally, CSI reporting is not in M AI This could include: CSI reports not being considered in M AI In the middle, or, CSI reported not in M AI In a CSI report, or, a CSI report is not considered in M AI One CSI is being reported, or, CSI is being reported in N. AI -M AI In N CSI reports, or, CSI reports are considered to be in N AI -M AI One CSI report is in progress. Optionally, M AI Each CSI report can be updated to M AI Each CSI report. Optional, M AI Each CSI report can be numbered from 0 to M. AI CSI reporting of -1. Optionally, N AI -M AI Each CSI report can be N that is not updated. AI -M AI Each CSI report. Optional, M AIA CSI report can be numbered M AI To N AI -1 CSI reporting. Optionally, being updated can include being requested to update. Optionally, not being updated can include not being requested to update. M AI The method of determination and / or M AI The determination method and / or N reported by each CSI AI -M AI The method for determining the CSI report is described above.

[0457] To determine whether at least one of N CSI reports (or, each CSI report) has been updated, or to determine whether N AI Whether at least one CSI report (or each CSI report) in the CSI reports has been updated, the UE can determine this based on M and / or M. AI N AI The number of PUs and / or CPUs occupied by the third CSI reporting configuration corresponding to / associated with a CSI reporting configuration in a CSI report is 0. See above for details. When the number of CPUs and / or PUs occupied by some third CSI reporting configurations corresponding to / associated with CSI reporting configurations is considered 0, M and / or M AI This will change. This will cause the UE and base station to communicate with each other regarding M and / or M. AI Inconsistent understandings have led to CSI reports not being updated correctly. The following methods can clarify M and / or M AI How is this determined to avoid UE and base station conflicts with M and / or M? AI Inconsistent understandings have improved the reliability of the communication system. Optionally, M and / or M AI The number of CPUs and / or PUs occupied corresponding to the CSI report is determined before it is considered to be 0. Optionally, the CSI report includes: the CSI report corresponding to / associated with the third CSI report configuration. Optionally, the CSI report includes: any of the CSI reports, or at least one CSI report, or all of the CSI reports. Optionally, the CSI report includes: any one of N CSI reports, or at least one of N CSI reports, or all of the N CSI reports. Optionally, the CSI report includes: N AI Any one of the CSI reports, or, N AI At least one of the CSI reports is made, or, N AIAll CSI reports in a CSI report. Optionally, the CPU usage of the CSI report corresponding to / associated with the third CSI report configuration includes at least one of the following: 1) The CPU usage of the CSI report corresponding to / associated with the third CSI report configuration (e.g., 0 CPU 1) Greater than 0; 2) The CPU usage of the CSI report corresponding to / associated with the third CSI report configuration (e.g., 0) CPU ) equals the first value; 3) the CPU (e.g., O) occupied by the CSI report corresponding to / associated with the third CSI report configuration. CPU The first value is greater than the first value. The first value can be a positive integer. For example, the first value can be one of 1, 2, 3, 4, 5, 6, 7, or 8.

[0458] Optionally, the PU occupied by the CSI reporting corresponding to / associated with the third CSI reporting configuration includes at least one of the following: 1) the PU occupied by the CSI reporting corresponding to / associated with the third CSI reporting configuration (e.g., O PU 1) Greater than 0; 2) The PU (e.g., O) occupied by the CSI reporting configuration corresponding to / associated with the third CSI reporting configuration. PU The second value is greater than or equal to the first value. The second value can be a positive integer. For example, the second value can be one of 1, 2, 3, 4, 5, 6, 7, or 8.

[0459] Optionally, the UE first determines, based on the CPU, whether one or more CSI reports have been updated (e.g., whether they can be updated), and then determines, based on the PU, whether one or more CSI reports have been updated. Alternatively, the UE first determines, based on the CPU, whether a CSI report has been updated, and then determines, based on the PU, whether an updated CSI report has been updated. For example, for an OFDM symbol, the UE first determines, based on the CPU, that Y CSI reports have not been updated, where Y ≥ 0. For that OFDM symbol, the UE then... AI CSI reports that are identical to at least one of the Y CSI reports are excluded, and the above operations are performed based on the remaining CSI reports (e.g., operations to determine whether a CSI report has been updated, or operations to determine whether a CSI report has been updated based on the PU). For example, for an OFDM symbol, the UE first determines that Y CSI reports have not been updated based on the CPU, where Y ≥ 0. For this OFDM symbol, the UE then performs the above operations based on N. AI The above operations are performed on CSI reports that are not among the Y CSI reports (or, not at least one of the Y CSI reports) (e.g., operations to determine whether a CSI report has been updated, or operations to determine whether a CSI report has been updated based on the PU). For example, for an OFDM symbol, the UE first determines that Y CSI reports have been updated based on the CPU, where Y ≥ 0. For that OFDM symbol, the UE then determines whether a CSI report has been updated based on N.AI The above operations are performed on CSI reports that are Y CSI reports (or at least one of the Y CSI reports) (e.g., operations to determine whether a CSI report has been updated, or operations to determine whether a CSI report has been updated based on PU).

[0460] The above method allows the UE to first determine, through the CPU, which CSI reports will not be updated. Since these non-updated CSI reports do not require the corresponding PU, when determining which CSI reports will not be updated through the PU, the above method can exclude these CSI reports, avoiding duplicate calculations, increasing the number of CSI reports that can be updated, and improving system efficiency.

[0461] Optionally, the value of N can be related to N AI The values ​​are the same. Optionally, N AI One CSI report can be the same as N CSI reports. Optionally, the UE can be based on M and M AI The smaller of the values ​​determines whether the CSI report is updated. For example, k equals M and M AI The smaller / larger value among them. For example, k equals M and M AI The minimum / maximum values ​​among them. k CSI reports (e.g., CSI reports n = 0, ..., k-1) can be considered updated CSI reports. The remaining Nk CSI reports can be considered non-updated CSI reports (or, CSI reports not required to be updated).

[0462] The above methods allow the UE to determine whether CSI reports have been updated based on CPU and PU. This prevents CSI reporting from exceeding resource limits and improves system reliability.

[0463] Optionally, the number of CPUs occupied by the CSI report associated with / corresponding to the third CSI reporting configuration can be predefined, or indicated by the UE (e.g., reported by the UE), or indicated by the base station (e.g., indicated via RRC signaling). Optionally, the number of CPUs occupied by the CSI report associated with / corresponding to the third CSI reporting configuration can be a non-negative integer. Optionally, the number of CPUs occupied by the CSI report associated with / corresponding to the third CSI reporting configuration can be 0 or 1. For example, 0 CPU =0, or, O CPU =1.

[0464] Optionally, the number of PUs occupied by the CSI report associated with / corresponding to the third CSI reporting configuration can be predefined, or indicated by the UE (e.g., reported by the UE), or indicated by the base station (e.g., indicated via RRC signaling). Optionally, the number of PUs occupied by the CSI report associated with / corresponding to the third CSI reporting configuration can be an integer between 0 and Y. Y can be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or 16.

[0465] Optionally, the number of PUs occupied by the first CSI reporting configuration associated with / corresponding to the CSI reporting can be predefined, or indicated by the UE (e.g., reported by the UE), or indicated by the base station (e.g., indicated via RRC signaling). Optionally, the number of PUs occupied by the first CSI reporting configuration associated with / corresponding to the CSI reporting can be 0 or 1. For example, 0 PU =0.

[0466] Optionally, the UE can report / instruct the CSI to report the number of PUs it occupies via UE capability signaling. Alternatively, the UE can report / instruct the CSI to report the number of CPUs it occupies via UE capability signaling.

[0467] Optionally, the UE can instruct the CSI to report the number of PUs occupied via an applicable report. Alternatively, the UE can instruct the CSI to report the number of CPUs occupied via an applicable report.

[0468] Optionally, if a third CSI reporting configuration associated with / corresponding to a CSI reporting configuration occupies CPU and the third CSI reporting configuration associated with / corresponding to a CSI reporting configuration also occupies PU, then the time-domain resources (e.g., OFDM symbols) of the PU occupied by the third CSI reporting configuration associated with / corresponding to the CSI reporting configuration are the same as the time-domain resources (e.g., OFDM symbols) of the CPU occupied. In this document, updating a CSI reporting may include at least one of the following: 1) the CSI in the CSI reporting is updated; 2) the CSI in the CSI reporting is calculated / processed; 3) the CSI in the CSI reporting is valid; 4) the CSI reporting is processed.

[0469] In this document, CSI reporting not being updated may include at least one of the following: 1) CSI in CSI reporting is not updated; 2) CSI in CSI reporting is not calculated / processed; 3) CSI in CSI reporting is invalid; 4) CSI reporting is not processed.

[0470] In this document, CSI reports not required to be updated may include at least one of the following: 1) CSI reports are not required to be updated; 2) CSI reports are not required to be calculated / processed; 3) CSI reports are not required to be valid; 4) CSI reports are not required to be processed.

[0471] Figure 5 A method 500 performed by a base station according to various embodiments of the present disclosure is illustrated. Method 500 includes: at 501, the base station transmits a first Channel State Information (CSI) reporting configuration for Layer 1 / Layer 2 triggered mobility (LTM), wherein the first CSI reporting configuration includes configuration information for a resource set for channel measurement, the configuration information for the resource set for channel measurement indicating K CSI-RS resource identifier IDs and K LTM candidate configuration IDs, K ≥ 1, wherein the k-th CSI-RS resource ID among the K CSI-RS resource IDs is associated with the k-th LTM candidate configuration ID among the K LTM candidate configuration IDs, 1 ≤ k ≤ K; the first CSI reporting configuration further includes first configuration information for L candidate cells, wherein each of the L first configuration information indicates at least one of codebook parameters, port indication for non-PMI feedback, and frequency domain configuration parameters, L The number of LTM candidate configuration IDs is equal to the number of duplicate IDs removed from the K LTM candidate configuration IDs. The LTM candidate configuration ID of the i-th candidate cell among the L candidate cells is the i-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs, where 1≤i≤L; and at 502, the base station receives CSI reports from N candidate cells among the L candidate cells based on the first CSI reporting configuration, 1≤N≤L, where the N candidate cells are determined based on at least one of the following: the CQI values ​​of the L candidate cells; the candidate cells corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration; and whether the N candidate cells exclude the current special cell.

[0472] Figure 6 The structure 600 of a user equipment according to various embodiments of the present disclosure is shown. For example... Figure 6 As shown, user equipment 600 includes a controller 610 and a transceiver 620, wherein the controller 610 is configured to perform the various methods disclosed herein performed by the user equipment, and the transceiver 620 is configured to transmit and receive channels or signals.

[0473] Figure 7 The structure 700 of a base station according to various embodiments of the present disclosure is shown. For example... Figure 7As shown, network device 700 includes a controller 710 and a transceiver 720, wherein the controller 710 is configured to perform various methods performed by network devices as disclosed herein, and the transceiver 720 is configured to transmit and receive channels or signals.

[0474] Furthermore, “at least one / at least one” as described in this disclosure includes any and / or all possible combinations of the listed items, the various embodiments described in this disclosure and the various examples in the embodiments can be changed and combined in any suitable form, and “ / ” as described in this disclosure means “or”.

[0475] The various illustrative logic blocks, modules, and circuits described in this disclosure may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternative embodiments, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0476] The steps of the methods or algorithms described in this disclosure may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information to / from the storage medium. In an 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 a user terminal. In an alternative, the processor and storage medium may reside as discrete components in the user terminal.

[0477] In one or more exemplary designs, the functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, the latter including any medium that facilitates the transfer of a computer program from one location to another. Storage media may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0478] The description set forth herein, taken in conjunction with the accompanying drawings, describes exemplary configurations, methods, and apparatuses, and does not represent all examples that can be implemented or that fall within the scope of the claims. As used herein, the term "example" means "serving as an example, instance, or illustration," and not "preferred" or "superior to other examples." The detailed description includes specific details intended to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0479] Although this specification contains details of various specific implementations, these should not be construed as limiting any invention or the scope of the claims, but rather as descriptions of specific features of particular embodiments of a particular invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually 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 a claimed combination may be removed from that combination, and the claimed combination may be for sub-combinations or variations thereof.

[0480] It should be understood that the specific order or hierarchy of steps in the methods of this disclosure is an illustration of an exemplary process. Based on design preferences, it is understood that the specific order or hierarchy of steps in the method can be rearranged to achieve the functions and effects disclosed in this disclosure. The appended method claims present the elements of various steps in an exemplary order and are not intended to limit one to the specific 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 a limitation on the singular is expressly stated. Therefore, this disclosure is not limited to the examples shown, and any means for performing the functions described herein are included in various aspects of this disclosure.

[0481] The text and accompanying drawings are provided by way of example only to aid the reader in understanding this disclosure. They are not intended and should not be construed as limiting the scope of this disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art, based on the content disclosed herein, that changes may be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

Claims

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising: Receive a first Channel State Information (CSI) reporting configuration and a second CSI reporting configuration for Layer 1 / Layer 2 triggered Mobility LTM. The first CSI reporting configuration includes configuration information for a resource set used for channel measurement. This configuration information indicates K CSI Reference Signal (CSI-RS) resource identifiers (IDs) and K LTM candidate configuration IDs, where K ≥ 1. The k-th CSI-RS resource ID is associated with the k-th LTM candidate configuration ID, where 1 ≤ k ≤ K. The first CSI reporting configuration also includes first configuration information for L candidate cells, wherein each of the L first configuration information indicates at least one of the following: codebook parameters, port indication for non-precoding matrix indicator (PMI) feedback, and frequency domain configuration parameters. L is equal to the number of LTM candidate configuration IDs after removing duplicate IDs from the K LTM candidate configuration IDs. The LTM candidate configuration ID of the i-th candidate cell among the L candidate cells is the i-th LTM candidate configuration ID after removing duplicate IDs from the K LTM candidate configuration IDs, where 1 ≤ i ≤ L. Based on the first CSI reporting configuration, report the CSI of N candidate cells out of the L candidate cells, 1≤N≤L; or, based on the candidate cell corresponding to the resource indicator of the CSI reporting indication corresponding to the second CSI reporting configuration, determine whether to report the CSI report corresponding to the first CSI reporting configuration; or, when the L candidate cells are the current special cells, discard the CSI report corresponding to the first CSI reporting configuration. The N candidate cells are determined based on at least one of the following: The channel quality indicator (CQI) values ​​of the L candidate cells; The candidate cell corresponding to the resource indicator of the CSI reporting indication configured in the second CSI reporting configuration; Does the N candidate cells exclude the current special cell? 2. The method according to claim 1, wherein, Among the K LTM candidate configuration IDs, after removing duplicate IDs, the j-th LTM candidate configuration ID is less than the (j+1)-th LTM candidate configuration ID, where 1≤j≤L-1.

3. The method according to claim 1 or 2, wherein, The CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is determined based on the LTM candidate configuration ID of the i-th candidate cell.

4. The method according to claim 3, wherein, The CSI-RS resource corresponding to the i-th candidate cell among the L candidate cells is one or more CSI-RS resources among the K CSI-RS resources whose LTM candidate configuration ID is the same as the LTM candidate configuration ID of the i-th candidate cell.

5. The method according to any one of claims 1-4, wherein, N is determined by at least one of the following methods: N is the configuration indication reported by the first CSI; N is indicated by the triggering status of the first CSI reporting configuration indicated by the media access control control element MAC-CE or the downlink control information DCI; N is determined by the UE.

6. The method according to any one of claims 1-5, wherein, The CSI report corresponding to the second CSI reporting configuration further includes the layer 1-reference signal receiving power L1-RSRP corresponding to the resource indicator, and the CSI report corresponding to the second CSI reporting configuration is the most recent CSI report before the report of the CSI of N candidate cells out of the L candidate cells.

7. The method according to claim 6, further comprising: When the candidate cell corresponding to the resource indicator indicated by the CSI report corresponding to the second CSI reporting configuration is different from the L candidate cells, discard the report of the CSI of the N candidate cells out of the L candidate cells.

8. The method according to claim 1, further comprising: When the L candidate cells are current special cells and the CSI report corresponding to the first CSI reporting configuration is a periodic CSI report, discard the CSI report corresponding to the first CSI reporting configuration.

9. The method according to claim 1, wherein, Whether the N candidate cells exclude the current special cell is indicated by the first CSI reporting configuration, and wherein, When the N candidate cells exclude the current special cell, the N candidate cells are N candidate cells out of the L-1 cells among the L candidate cells that do not correspond to the current special cell.

10. The method according to any one of claims 1-9, wherein, The CSI of each of the N candidate cells includes K. rep Group CSI, wherein the K rep Each group of CSIs includes at least one of the following: CSI-RS resource indicator CRI, PMI, rank indicator RI, CQI, and tier indicator LI. Among them, K rep =1, and / or, K rep It is indicated by the first configuration information corresponding to each candidate cell, and / or, K rep It is the configuration instruction reported by the first CSI.

11. The method according to claim 10, wherein, The K rep The CSI-RS resources corresponding to a group of CSIs are determined based on at least one of the following: The value of the CQI corresponding to the CSI-RS resource; The resource corresponding to the resource indicator indicated by the CSI report corresponding to the second CSI reporting configuration.

12. The method according to claim 10 or 11, wherein, When the N candidate cells do not exclude the current special cell: When N = L and / or K1>1, the value k1 of the CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)th CSI-RS resource corresponding to the nth candidate cell, 0≤k1≤K1-1, 1≤n≤N; Or, When N = L and / or K1 = 1, the CSI of the N candidate cells does not include a CRI; or, When N<L, the value k2 of the CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)th CSI-RS resource in the resource set configured by the configuration information of the resource set for channel measurement, 0≤k2≤K-1, where K1 is the number of CSI-RS resources corresponding to the nth candidate cell.

13. The method according to claim 10 or 11, wherein, When the N candidate cells exclude the current special cell: When N = L and / or K1>1, the value k1 of the CRI in the CSI of the nth candidate cell among the N candidate cells corresponds to the (k1 + 1)th CSI-RS resource corresponding to the nth candidate cell, 0≤k1≤K1-1, 1≤n≤N; Or, When N = L-1 and / or K1 = 1, the CSI of the N candidate cells does not include a CRI; or, When N < L - 1, the value k2 of CRI in the CSI of the N candidate cells corresponds to the (k2 + 1)-th CSI-RS resource in the resource set configured according to the configuration information of the resource set for channel measurement, where 0 ≤ k2 ≤ K - 1. Here, K1 is the number of CSI-RS resources corresponding to the n-th candidate cell.

14. The method according to any one of claims 1-13, wherein, The mapping order of the CSI of the N candidate cells is determined based on the value of the LTM candidate configuration ID corresponding to the N candidate cells and / or whether the candidate cell is the current special cell.

15. The method according to claim 14, wherein if the N candidate cells include candidate cells corresponding to the current special cell, then the CSI of the candidate cells in the N candidate cells that do not correspond to the current special cell is before the CSI of the candidate cells in the N candidate cells that correspond to the current special cell, and the mapping order of the CSI of the candidate cells in the N candidate cells that do not correspond to the current special cell is determined based on the ascending order of the values of the LTM candidate configuration ID corresponding to the N candidate cells; or if the N candidate cells do not include candidate cells corresponding to the current special cell, then the mapping order of the CSI of the N candidate cells is determined based on the ascending order of the values of the LTM candidate configuration ID corresponding to the N candidate cells.

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