Method executed by user equipment and user equipment

Abstract

The invention provides a method executed by user equipment and the user equipment. The method comprises the steps of: updating or generating a channel state indication information (CSI) report; performing reference signal received power (RSRP) measurement on all channel state information reference signals (CSI-RS) in a CSI-RS resource set or all synchronous signal blocks (SSB) in a synchronous signal block (SSB) resource set; and determining the content and the mapping order included in the CSI report.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a method executed by a user equipment and a corresponding user equipment. BACKGROUND

[0002] In Rel-15 NR, a user equipment can perform different downlink channel measurements and channel state information reporting based on the configuration information from the network. The configuration of the measurements and the corresponding reporting ways are done by reporting configuration, which is represented by RRC parameter CSI-ReportConfig in 3GPP protocol. Specifically, the reporting configuration includes the following three aspects of information:

[0003] 1) The number of measurement reporting, i.e. how many measurement items need to be reported to the network.

[0004] One measurement report needs to explicitly configure which measurement items the user equipment needs to report. For example, one measurement report can include three items: Channel Quality Indicator (CQI), Rank Indicator (RI) and Precoder Matrix Indicator (PMI), collectively referred to as channel state information. A measurement report can also include only one item, such as reporting the received signal strength, referred to as Reference Signal Received Power (RSRP). RSRP is also a key measurement, generally used in high-level Radio Resource Management (RRM). RSRP reporting is introduced in the physical layer in NR, used for Beam Management (BM), referred to as L1-RSRP.

[0005] 2) Measurement object, i.e. the physical resource of the downlink measurement

[0006] In the configuration information of RRC parameter CSI-ReportConfig, the reporting configuration is associated with one or more resource sets. Specifically, one measurement resource configuration is associated with one or more NonZero Power CSI Reference Signal (NZP-CSI RS) resource sets, which are used by the user equipment to measure the characteristics of the downlink channel. The NZP-CSI RS resource set can include a set of configured CSI RS or a set of Synchronization Signal Blocks (SSBs). For example, the L1-RSRP measurement reporting for beam management is performed for a set of SSBs or a set of NZP-CSI RSs.

[0007] 3) Reporting method, i.e., which uplink physical channel is used to carry the CSI reporting

[0008] In Rel-15 NR, the CSI reporting of the user equipment can be divided into three types: periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting.

[0009] For periodic CSI reporting, the network needs to configure a certain reporting period. The periodic CSI reporting is carried by the Physical Uplink Control Channel (PUCCH). Therefore, for periodic CSI reporting, the resource configuration information needs to configure the periodic PUCCH resource used for reporting.

[0010] For semi-persistent CSI reporting, the network activates or deactivates the corresponding CSI reporting through the MAC CE. The semi-persistent CSI reporting can be carried by the allocated PUCCH or by the allocated Physical Uplink Shared Channel (PUSCH). The PUSCH is often used to carry semi-persistent CSI reporting with a large amount of reporting information.

[0011] The aperiodic CSI reporting is triggered by the Downlink Control Information (DCI). Specifically, it is indicated by the CSI request indication field in the uplink scheduling grant. This indication field contains up to 6 bits, and each combination corresponds to a configured aperiodic CSI reporting, i.e., up to 63 different aperiodic CSI reports can be triggered (all bits set to 0 means no aperiodic CSI reporting is triggered). The aperiodic CSI reporting is carried by the PUSCH.

[0012] At the 3GPP RAN#94e plenary meeting on December 3, 2021, the study on Artificial Intelligence / Machine Learning (AI / ML) applications in NR air interface was approved (see Non-Patent Literature 1). The use cases of this study item mainly include the following three aspects:

[0013] 1) Enhancement of CSI reporting, such as overhead reduction, improvement of accuracy and prediction of CSI reporting, etc.

[0014] 2) Enhancement of beam management, such as beam prediction in time domain, reduction of overhead and latency in spatial domain, and improvement of accuracy of beam selection, etc. UE reports layer 1 reference signal received power (RSRP) to the base station, and the base station performs beam management according to the reported information.

[0015] 3) Enhancement of positioning accuracy in different scenarios, such as scenarios with dense non-line of sight (NLOS).

[0016] The scheme of the present application is that when AI / ML is applied in NR air interface, the user equipment (UE) determines the mapping order of layer 1 (physical layer) reference signal received power (RSRP) for beam management in a CSI report.

[0017] Prior art documents

[0018] Non-patent literature

[0019] Non-patent literature 1: RP-213599, New SI: Study on AI / ML for NR air interface, section 4.1 SUMMARY

[0020] In order to solve at least part of the above problems, the present application provides a method executed by a user equipment and a user equipment, which can ensure that the base station can identify the downlink beam corresponding to each reported L1-RSRP, effectively reduce the overhead of beam management report, and improve the reliability of downlink transmission.

[0021] According to the present invention, a method executed by a user equipment is proposed, comprising the following steps: updating or generating a Channel State Indication Information (CSI) report; measuring the Reference Signal Received Power (RSRP) of all CSI-RS in the Channel State Information Reference Signal (CSI-RS) resource set or all SSBs in the Synchronization Signal Block (SSB) resource set; and determining the content and mapping order of the CSI report.

[0022] Preferably, the CSI reporting configuration information associated with the CSI report includes configuration information related to artificial intelligence / machine learning (AI / ML).

[0023] Preferably, the CSI reporting configuration information associated with the CSI report includes, in addition to the reference signal configured for channel measurement, reference signal configuration information for beam management reporting. The reference signal for channel measurement is the CSI-RS resource set or the Synchronization Signal Block (SSB) resource set.

[0024] Preferably, the reference signal configuration information reported for beam management is the number M of the reported Layer 1 reference signal received power L1-RSRP.

[0025] Preferably, the content included in the CSI report is at least:

[0026] ■ Maximum L1-RSRP measurement;

[0027] ■ The identifier (CRI) of a CSI-RS resource in the CSI-RS resource set corresponding to the maximum L1-RSRP measurement value. report #1, or, an SSB resource identifier SSBRI in the SSB resource set corresponding to the maximum L1-RSRP measurement value. report #1; and

[0028] ■ The difference values ​​of the remaining (M-1) largest L1-RSRP measurements.

[0029] Preferably, the mapping order of the CSI reports is:

[0030] ■The CRI report #1, or, the SSBRI report #1;

[0031] ■The maximum L1-RSRP measurement value; and

[0032] ■ The difference values ​​of the remaining (M-1) largest L1-RSRP measurements.

[0033] Preferably, the differential values of the remaining maximum (M-1) L1-RSRP measurement values correspond to the CSI-RS resource set or the SSB resource set in order respectively, except for the CRI report #1 or the CSI-RS or SSB configured after the SSBRI report #1.

[0034] In addition, according to the present application, a user equipment is provided, comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the above method.

[0035] Effects of the Invention

[0036] In the related technology of applying artificial intelligence / machine learning (AI / ML) in the NR air interface, for the case of model inference on the network side, the present application provides a mapping order of layer 1 RSRP (L1-RSRP) in the beam management report. Specifically, except for the reference signal corresponding to the maximum L1-RSRP measurement value, the mapping order of L1-RSRP corresponding to other reference signals in the beam management report is arranged according to the configuration order of these reference signals. The present application ensures that the base station can identify the downlink beam corresponding to each reported L1-RSRP, effectively reduces the overhead of the beam management report, and improves the downlink transmission reliability. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and other features of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:

[0038] Figure 1 is a schematic diagram showing the basic process of the method performed by the user equipment in embodiment one of the present application.

[0039] Figure 2 is a block diagram showing the user equipment according to the embodiment of the present application. DETAILED DESCRIPTION

[0040] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present application should not be limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of well-known technology not directly related to the present application are omitted to prevent confusion in understanding the present application.

[0041] The following describes in detail a plurality of embodiments according to the present application with 5G mobile communication system and its subsequent evolved versions as an example application environment. However, it is to be noted that the present application is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as 5G after the communication system and 4G mobile communication system before 5G, etc.

[0042] The following describes some terms related to the present application, and if not specifically described, the terms related to the present application are defined herein. The terms given in the present application can be named differently in LTE, LTE-Advanced, LTE-Advanced Pro, NR and later communication systems, but uniform terms are used in the present application, and when applied to a specific system, they can be replaced with the terms used in the corresponding system.

[0043] 3GPP: 3rd Generation Partnership Project, 3rd Generation Partnership Project

[0044] LTE: Long Term Evolution, Long Term Evolution technology

[0045] NR: New Radio, New Radio, New Radio

[0046] PDCCH: Physical Downlink Control Channel, Physical Downlink Control Channel

[0047] DCI: Downlink Control Information, Downlink Control Information

[0048] PDSCH: Physical Downlink Shared Channel, Physical Downlink Shared Channel

[0049] UE: User Equipment, User Equipment

[0050] eNB: evolved NodeB, evolved NodeB

[0051] gNB: NR base station

[0052] TTI: Transmission Time Interval, Transmission Time Interval

[0053] OFDM: Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing

[0054] CP-OFDM: Cyclic Prefix Orthogonal Frequency Division Multiplexing

[0055] C-RNTI: Cell Radio Network Temporary Identifier

[0056] CSI: Channel State Information

[0057] HARQ: Hybrid Automatic Repeat Request

[0058] CSI-RS: Channel State Information Reference Signal

[0059] CRS: Cell Reference Signal

[0060] PUCCH: Physical Uplink Control Channel

[0061] PUSCH: Physical Uplink Shared Channel

[0062] UL-SCH: Uplink Shared Channel

[0063] CG: Configured Grant

[0064] MCS: Modulation and Coding Scheme

[0065] RB: Resource Block

[0066] RE: Resource Element

[0067] CRB: Common Resource Block

[0068] CP: Cyclic Prefix

[0069] PRB: Physical Resource Block

[0070] FDM: Frequency Division Multiplexing

[0071] RRC: Radio Resource Control

[0072] RSRP: Reference Signal Receiving Power

[0073] SRS: Sounding Reference Signal

[0074] DMRS: Demodulation Reference Signal

[0075] CRC: Cyclic Redundancy Check

[0076] SFI: Slot Format Indication

[0077] TDD: Time Division Duplexing

[0078] FDD: Frequency Division Duplexing

[0079] SIB: System Information Block

[0080] SIB1: System Information Block Type 1

[0081] PCI: Physical Cell ID

[0082] PSS: Primary Synchronization Signal

[0083] SSS: Secondary Synchronization Signal

[0084] BWP: BandWidth Part

[0085] SFN: System Frame Number, system (radio) frame number

[0086] IE: Information Element, information element

[0087] SSB: Synchronization Signal Block, synchronization signal block

[0088] EN-DC: EUTRA-NR Dual Connection, LTE-NR dual connection

[0089] MCG: Master Cell Group, master cell group

[0090] SCG: Secondary Cell Group, secondary cell group

[0091] PCell: Primary Cell, primary cell

[0092] SCell: Secondary Cell, secondary cell

[0093] SPS: Semi-Persistant Scheduling, semi-persistent scheduling

[0094] TA: Timing Advance, timing advance

[0095] PT-RS: Phase-Tracking Reference Signals, phase tracking reference signal

[0096] TB: Transport Block, transport block

[0097] CB: Code Block, code block

[0098] QPSK: Quadrature Phase Shift Keying, quadrature phase shift keying

[0099] 16 / 64 / 256QAM: 16 / 64 / 256 Quadrature Amplitude Modulation, 16 / 64 / 256 quadrature amplitude modulation

[0100] TDRA (field): Time Domain Resource Assignment, time domain resource assignment indication (field)

[0101] FDRA (field): Frequency Domain Resource Assignment, frequency domain resource allocation indication (field)

[0102] ARFCN: Absolute Radio Frequency Channel Number, absolute radio frequency channel number

[0103] SC-FDMA: Single Carrier-Frequency Division Multiple Access, single carrier-frequency division multiple access

[0104] MAC: Medium Access Control, medium access control layer

[0105] PDU: Protocol Data Unit, protocol data unit

[0106] TBS: Transport Block Size, transport block size

[0107] CQI: Channel Quality Indicator, channel quality indicator

[0108] RI: Rank Indicator, channel rank indicator

[0109] PMI: Precoder Matrix Indicator, channel precoding matrix indicator

[0110] RRM: Radio Resource Management, radio resource management

[0111] BM: Beam Management, beam management

[0112] NZP-CSI RS: Non Zero Power CSI Reference Signal, non-zero power channel state information reference signal

[0113] MAC CE: Medium Access Control Control Element, medium access control control element

[0114] CRI: CSI-RS Resource Indicator, CSI-RS resource indicator

[0115] SSBRI: SSB Resource Indicator, SSB resource indicator

[0116] MSB: Most Significant Bit, most significant bit

[0117] LSB: Least Significant Bit, least significant bit

[0118] The following is a description of the prior art associated with the present solution. The meaning of the same terms in the specific embodiments is the same as in the prior art, unless otherwise specified.

[0119] In the description herein, network means base station.

[0120] In the description herein, the use of artificial intelligence / machine learning (AI / ML) models can also be referred to as the use of enhanced CSI (or reporting).

[0121] Numerology in NR and slot in NR

[0122] The numerology contains two aspects of subcarrier spacing and cyclic prefix (CP) length. Among them, NR supports five subcarrier spacings, which are 15k, 30k, 60k, 120k, and 240kHz (corresponding to μ = 0, 1, 2, 3, 4). Table 4.2-1 shows the supported transmission numerology, which is as follows.

[0123] Table 4.2-1 NR supported subcarrier spacing

[0124] μ Δf = 2 μ · 15 [kHz] ] > CP (Cyclic Prefix) 0 15 Normal 1 30 Normal 2 60 Normal, extended 3 120 Normal 4 240 Normal

[0125] Extended CP is supported only when μ = 2, i.e. 60kHz subcarrier spacing, and normal CP is only supported for other subcarrier spacings. For normal (Norma1) CP, each slot contains 14 OFDM symbols; for extended CP, each slot contains 12 OFDM symbols. For μ = 0, i.e. 15kHz subcarrier spacing, 1 slot = 1ms; μ = 1, i.e. 30kHz subcarrier spacing, 1 slot = 0.5ms; μ = 2, i.e. 60kHz subcarrier spacing, 1 slot = 0.25ms, and so on.

[0126] NR and LTE have the same definition of subframe, which represents 1ms. For subcarrier spacing configuration μ, the slot number within 1 subframe (1ms) can be represented as ranging from 0 to The slot number within 1 system frame (with a duration of 10ms) can be represented as ranging from 0 to wherein and The definition for different subcarrier spacing μ is shown in the following table.

[0127] Table 4.3.2-1: Number of symbols per slot, number of slots per system frame, number of slots per subframe for normal CP

[0128]

[0129] Table 4.3.2-2: Number of symbols per slot, number of slots per system frame, number of slots per subframe for extended CP (60 kHz)

[0130]

[0131] On an NR carrier, the number of system frame (or, simply, frame) SFN ranges from 0 to 1023.

[0132] Resource block, RB, and resource element, RE

[0133] A resource block RB is defined in the frequency domain as subcarriers, e.g. for a subcarrier spacing of 15 kHz, a RB is 180 kHz in the frequency domain. For a subcarrier spacing of 15 kHz x 2 μ A resource element RE represents one subcarrier in the frequency domain and one OFDM symbol in the time domain.

[0134] Common RB (CRB) in NR

[0135] A common resource block CRB is defined for a numerology. For all numerologies, the center frequency of subcarrier 0 of common resource block CRB number 0 points to the same location in the frequency domain, which is referred to as "point A".

[0136] NR resource grid

[0137] For each numerology, a resource grid is defined in a given transmission direction (denoted by x, where x = DL for downlink and x = UL for uplink) of one carrier, which contains subcarriers (i.e. resource blocks RB, each containing subcarriers subcarrier) in the frequency domain and OFDM symbols (where denotes the number of OFDM symbols within a subframe, which depends on μ) in the time domain, where denotes the number of subcarriers in a resource block RB, which satisfies lowest indexed common resource block (CRB) of the resource grid configured by higher layer parameter offsetToCarrier configured by higher layer parameter carrierBandwidth. For a given numerology and higher layer parameter offsetToCarrier, gNB configures a cell specific common offsetToCarrier in ServingCellConfigCommon IE by dedicated signaling. Specifically, ServingCellConfigCommon includes a higher layer parameter downlinkConfigCommon, which contains the configuration information of offsetToCarrier.

[0138] Bandwidth part (BWP)

[0139] In NR, for each numerology, one or multiple bandwidth parts (BWPs) can be defined. Each BWP contains one or multiple contiguous CRBs. Assuming the index of a BWP is i, its starting point (or, equivalently, expressed as ) and length (or, equivalently, expressed as ) must satisfy the following relationship:

[0140]

[0141]

[0142] That is, the CRBs contained in this BWP must be located within the resource grid of the corresponding numerology. The distance from the lowest indexed CRB of a BWP to point A, in terms of RBs, is denoted as

[0143] The resource blocks within a BWP are called physical resource blocks (PRBs), whose indices are where the physical resource block 0 corresponds to the lowest indexed CRB of the BWP, i.e., CRB For a serving cell, gNB configures a BWP by the following higher layer parameters:

[0144] 1) subcarrier spacing;

[0145] 2) CP length;

[0146] 3) The high-level parameter locationAndBandwidth indicates the BWP relative to the starting CRB of the resource raster. offset value offset(RB) start ) and the number L of consecutive CRBs in the frequency domain of the BWP RB ,satisfy Among them O carrier This represents `offsetToCarrier`; where the parameter `locationAndBandwidth` indicates a `RIV` (Resource Indication Value). The `RIV` is related to `L`. RB and RB start The calculation relationship is as follows: If So otherwise, in, and,

[0147] 4) The serial number of the BWP;

[0148] 5) Configuration of BWP common and BWP proprietary parameters, such as the configuration of PDCCH and PDSCH for downlink BWP.

[0149] Channel state information reporting (CSI report) in NR

[0150] In NR, user equipment can perform different downlink channel measurements and channel state information reports (CSI reports) based on network configuration information. The measurement configuration and the corresponding reporting method are accomplished through the reporting configuration, which is represented by the RRC parameter CSI-ReportConfig in the 3GPP protocol.

[0151] Reporting item of CSI report

[0152] One measurement report needs to explicitly configure which measurement items the user equipment needs to report. For example, one measurement report can include three items: Channel Quality Indicator (CQI), Rank Indicator (RI), and Precoder Matrix Indicator (PMI), collectively known as Channel State Information. A measurement report can also include only one item, for example, reporting the received signal strength, known as Reference Signal Received Power (RSRP). RSRP is also a key measurement, generally used in high-level Radio Resource Management (RRM). In NR, RSRP reporting is introduced in the physical layer for Beam Management (BM), known as L1-RSRP. For L1-RSRP reporting, the user equipment can report the largest L1-RSRP measurement value, and the rest of the L1-RSRP is reported in a differential manner, i.e., the rest of the reported L1-RSRP values are the difference between the measurement value and the largest L1-RSRP measurement value.

[0153] Physical measurement resource of CSI report

[0154] In the configuration information of RRC parameter CSI-ReportConfig, the reporting configuration is associated with one or more resource sets. Specifically, one measurement resource configuration is associated with one or more NonZero Power CSI Reference Signal (NZP-CSI RS) resource sets, which are used by the user equipment to measure the characteristics of the downlink channel. The NZP-CSI RS resource set can include a set of configured CSI RS or a set of Synchronization Signal Blocks (SSBs). For example, the L1-RSRP measurement reporting for beam management is performed for a set of SSBs or a set of NZP-CSI RSs. For a set of configured NZP-CSI RS resources, a CSI-RS resource index (CRI) is used to represent a specific CSI-RS resource in the set. For example, if the set contains 4 CSI-RS resources, the CRI is 2 bits, ‘00’ represents the first CSI-RS resource, ‘01’ represents the second CSI-RS resource, ‘10’ represents the third CSI-RS resource, and ‘11’ represents the fourth CSI-RS resource. Similarly, for a set of configured SSB resources, a Synchronization Signal Block Resource Index (SSBRI) is used to represent a specific SSB resource in the set.

[0155] Reporting mode of CSI report

[0156] In NR, the CSI reporting of the user equipment can be divided into three types: periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting.

[0157] For periodic CSI reporting, the network needs to configure a certain reporting period. The periodic CSI reporting is carried by the physical uplink control channel (PUCCH). Therefore, for periodic CSI reporting, the resource configuration information needs to configure the periodic PUCCH resource used for reporting.

[0158] For semi-persistent CSI reporting, the network activates or deactivates the corresponding CSI reporting through the MAC CE. The semi-persistent CSI reporting can be carried by the allocated PUCCH or by the allocated physical uplink shared channel (PUSCH). The PUCCH resource is semi-statically configured periodically. The PUSCH is often used to carry semi-persistent CSI reporting with a large amount of reporting information.

[0159] Aperiodic CSI reporting is triggered by downlink control information (DCI). Specifically, it is indicated by a CSI request field in the uplink scheduling grant. This indication field contains up to 6 bits, each combination corresponds to one configured aperiodic CSI reporting, i.e., up to 63 different aperiodic CSI reporting can be triggered (all bits set to 0 means no aperiodic CSI reporting is triggered). Aperiodic CSI reporting is carried by PUSCH.

[0160] Priority of CSI report

[0161] In NR, a user equipment (UE) needs to determine a priority value for each CSI reporting. The larger the priority value, the lower the priority of the CSI reporting; the smaller the priority value, the higher the priority of the CSI reporting.

[0162] Artificial intelligence / machine learning (AI / ML)

[0163] In the present disclosure, AI / ML model is used to represent the application of AI / ML technology in NR air interface. In the case of CSI enhancement, the AI / ML model includes a CSI generation model (or called encoder or auto-encoder) and a CSI reconstruction model (or called decoder or auto-decoder). In the case of beam management enhancement, when the UE applies the AI / ML model, it can be used to generate the reported beam measurement information. When the network applies the AI / ML model, two sets of reference signals can be configured for the UE. The two sets can be different, one is used for beam measurement, and the other set represents the beams that need to be reported.

[0164] AI / ML technology can be divided into the following 5 aspects:

[0165] 1) AI / ML model training

[0166] AI / ML model training means obtaining an inference relationship (e.g., a function) from the combination of input parameters and output parameters for subsequent inference. Taking the CSI generation model as an example, the model can be trained by the network or by the UE. The input parameters of the model are the original data of the channel (e.g., the original matrix of the channel), and the output parameters are the CSI reported to the network. Conversely, for the CSI reconstruction model, it can also be trained by the network or by the UE. The input parameters of the CSI reconstruction model are the reported CSI, and the output parameters are the original data of the channel.

[0167] 2) AI / ML model transfer

[0168] If the CSI generation model is trained by the network, the trained CSI generation model can be sent by the network to the UE for model inference of the UE. The sending of the model is referred to as AI / ML model transfer.

[0169] 3) AI / ML model inference

[0170] Taking the CSI generation model as an example, the process in which the UE uses a CSI generation model to generate CSI reporting is the AI / ML model inference process. Similarly, the process in which the network uses a CSI reconstruction model to generate original channel data is also AI / ML model inference.

[0171] 4) AI / ML model monitoring

[0172] The network or the UE needs to monitor the AI / ML model used to determine whether the model used is suitable for the current channel state.

[0173] 5) AI / ML model update

[0174] When the network or the UE considers that the model is no longer applicable, the AI / ML model will be updated.

[0175] The following describes specific examples and embodiments related to the present application in detail. In addition, as described above, the examples and embodiments described in the present disclosure are exemplary descriptions for easy understanding of the present application, and are not limitations of the present application.

[0176] [Embodiment One]

[0177] Figure 1 is a schematic diagram showing the basic process of the method performed by the user equipment in Embodiment One of the present application.

[0178] The following describes in detail the method performed by the user equipment in Embodiment One of the present application, in combination with the basic process diagram shown in Figure 1

[0179] As shown in Figure 1 , in Embodiment One of the present application, the steps performed by the user equipment include:

[0180] In step S101, the user equipment updates (or generates) a channel state indication information (CSI) report.

[0181] ​Optionally, the CSI report associated CSI reporting configuration information CSI-ReportConfig contains AI / ML related configuration information (or the CSI reporting configuration information applies an AI / ML model), or the CSI-ReportConfig contains reference signal configuration information for beam management reporting (optionally, the reference signal configuration information for beam management reporting is the number M of reported layer 1-reference signal received power L1-RSRP) on the basis of the configuration of reference signals for channel measurement. Optionally, the reference signals for channel measurement are a channel state information reference signal CSI-RS resource set or a synchronization signal block SSB resource set.

[0182] Optionally, the number M is equal to the number of CSI-RS resources in the CSI-RS resource set (in this case, the CSI-RS resources contained in the CSI-RS resource set are represented as CRI#1, CRI#2, …, CRI#M), or the number M is equal to the number of SSB resources in the SSB resource set (in this case, the SSB resources contained in the SSB resource set are represented as SSBRI#1, SSBRI#2, …, SSBRI#M).

[0183] Optionally, the CSI report contains the measurement value of L1-RSRP, optionally, for beam management.

[0184] In step S102, the user equipment performs RSRP measurement on all CSI-RSs in the CSI-RS resource set or all SSBs in the SSB resource set.

[0185] In step S103, the user equipment determines the content and mapping order of the CSI report.

[0186] Optionally, the CSI report contains at least:

[0187] ■the maximum L1-RSRP measurement value;

[0188] ■the identification of the CSI-RS resource (or one of the multiple CSI-RS resources) in the CSI-RS resource set corresponding to the maximum L1-RSRP measurement value (represented by CSI-RS resource identification CRI#1, corresponding to CRI#Meas report max , where Meas max ​is one (or one of the multiple) SSB resource(s) in the SSB resource set corresponding to the largest L1-RSRP measurement value (denoted by SSB resource identity SSBRI#1 report #1, or, one (or one of the multiple) SSB resource(s) in the SSB resource set corresponding to the largest L1-RSRP measurement value (denoted by SSB resource identity SSBRI#1 max , where Meas max is an integer between 1 and M.

[0189] the differential values of the remaining (M-1) L1-RSRP measurement values.

[0190] wherein, optionally, the mapping order of the CSI report is (from front to back, or, from left to right, or, from the most significant bit MSB to the least significant bit LSB, or, from the least significant bit LSB to the most significant bit MSB):

[0191] the CRI report #1, or, the SSBRI report #1.

[0192] the largest L1-RSRP measurement value, denoted by RSRP#1.

[0193] the differential values of the remaining (M-1) L1-RSRP measurement values, denoted by Differential RSRP#2, Differential RSRP#3,..., Differential RSRP#M, wherein the Differential RSRP#2, Differential RSRP#3,..., Differential RSRP#M (in order) respectively correspond to the CSI-RS resources or the SSBs configured in the CSI-RS resource set or the SSB resource set excluding the CRI report #1 (CRI#Meas max ) or excluding the SSBRI report #1 (SSBRI#Meas max ) (i.e., the remaining M-1 CSI-RS resources in CRI#1, CRI#2,..., CRI#M excluding CRI#Meas max , or, the remaining M-1 SSBs in SSBRI#1, SSBRI#2,..., SSBRI#M excluding SSBRI#Meas max ).

[0194] For example, M=5, the reference signal for channel measurement is one CSI-RS resource set, which contains 5 CSI-RS resources (CRI#1, CRI#2,..., CRI#5) in total, the L1-RSRP measurement value corresponding to CRI#3 is the largest (i.e. CRI#3 corresponds to CRI#1), then Differential RSRP#2, Differential RSRP#3, Differential RSRP#4, Differential RSRP#5 correspond to CRI#1, CRI#2, CRI#4, CRI#5 in order respectively. report For example, M=5, the reference signal for channel measurement is one CSI-RS resource set, which contains 5 CSI-RS resources (CRI#1, CRI#2,..., CRI#5) in total, the L1-RSRP measurement value corresponding to CRI#3 is the largest (i.e. CRI#3 corresponds to CRI#1), then Differential RSRP#2, Differential RSRP#3, Differential RSRP#4, Differential RSRP#5 correspond to CRI#1, CRI#2, CRI#4, CRI#5 in order respectively.

[0195] Figure 2 is a block diagram representing a user equipment UE involved in the present application. As shown in Figure 2 the user equipment UE 20 comprises a processor 201 and a memory 202. The processor 201 can comprise, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 202 can comprise, for example, a volatile memory (such as a Random Access Memory, RAM), a hard disk drive (HDD), a non-volatile memory (such as a Flash memory), or other memory, etc. The memory 202 stores program instructions. The instructions, when executed by the processor 201, can perform the above-mentioned method executed by the user equipment as described in detail in the present application.

[0196] The method and the involved devices of the present application have been described above in connection with preferred embodiments. It will be appreciated by a person skilled in the art that the method shown above is only exemplary and that the embodiments described above can be combined with each other without contradiction. The method of the present application is not limited to the steps and the order shown above. The network node and the user equipment shown above can comprise more modules, for example, modules that can be developed or will be developed in the future for a base station, an MME, or a UE, etc. The various identifiers shown above are only exemplary and not limiting, and the present application is not limited to the specific information elements as examples of these identifiers. A person skilled in the art can make many changes and modifications according to the teachings of the embodiments shown.

[0197] It should be understood that the above embodiments of the present application can be implemented by software, hardware, or a combination of software and hardware. For example, the various components inside the base station and the user equipment in the above embodiments can be implemented by various devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic devices (CPLDs), etc.

[0198] In the present application, a "base station" can refer to a mobile communication data and control switching center having a large transmission power and a wide coverage area, including functions such as resource allocation scheduling, data reception and transmission, etc. A "user equipment" can refer to a user mobile terminal, such as a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.

[0199] Furthermore, embodiments of the present application disclosed herein can be implemented in a computer program product. More specifically, the computer program product is a product having a computer readable medium having encoded thereon computer program logic, which, when executed on a computing device, provides related operations to implement the above technical solutions of the present application. The computer program logic, when executed on at least one processor of a computing system, causes the processor to perform the operations (methods) described in the embodiments of the present application. Such a configuration of the present application is typically provided as software, code and / or other data structures, or other media such as firmware or microcode on one or more ROM or RAM or PROM chips, or as downloadable software images, shared databases, etc., in one or more modules, encoded on a computer readable medium such as optical media (e.g., CD-ROM), floppy or hard disk, etc. The software or firmware or such configuration can be installed on a computing device to cause one or more processors in the computing device to perform the technical solutions described in the embodiments of the present application.

[0200] Furthermore, each functional module or each feature of the base station device and the terminal device used in each of the above embodiments can be implemented or performed by a circuit, which is typically one or more integrated circuits. The circuit designed to perform the functions described in the present specification can include a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a general use integrated circuit, a field programmable gate array (FPGA), or other programmable logic devices, discrete gates or transistor logic, or discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, or the processor can be a controller, a microcontroller, or a state machine. The above general-purpose processor or each circuit can be configured by one or combination of a digital circuit and a logical circuit. Further, the present application can be carried out by high-technological devices manufactured by substituting currently known integrated circuits with advanced integrated circuits that will appear with the advancement of semiconductor technology.

[0201] Although the present application has been shown and described above with respect to the preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the present application should not be limited by the above embodiments but should be defined by the appended claims and their equivalents.

Claims

1. A method executed by a user equipment, comprising the following steps: Update or generate Channel State Indication (CSI) reports; The reference signal received power (RSRP) is measured for all CSI-RS resources in the Channel State Information Reference Signal (CSI-RS) resource set or all SSB resources in the Synchronization Signal Block (SSB) resource set; and Determine the content and mapping order of the CSI report.

2. The method according to claim 1, wherein, The CSI reporting configuration information associated with the CSI report includes configuration information related to artificial intelligence / machine learning (AI / ML).

3. The method according to claim 1, wherein, The CSI reporting configuration information associated with the CSI report includes, in addition to the reference signal configuration for channel measurement, reference signal configuration information for beam management reporting. The reference signal used for channel measurement is either the CSI-RS resource set or the Synchronization Signal Block (SSB) resource set.

4. The method according to claim 3, wherein, The reference signal configuration information reported for beam management is the number M of the reported Layer 1-Reference Signal Received Power (L1-RSRP).

5. The method according to claim 4, wherein, The CSI report includes at least the following: ■ Maximum L1-RSRP measurement; ■ The identifier (CRI) of a CSI-RS resource in the CSI-RS resource set corresponding to the maximum L1-RSRP measurement value. report #1, or, an SSB resource identifier SSBRI in the SSB resource set corresponding to the maximum L1-RSRP measurement value. report #1; as well as ■ The difference values ​​of the remaining (M-1) largest L1-RSRP measurements.

6. The method according to claim 5, wherein, The mapping order of the CSI reports is as follows: ■The CRI report #1, or, the SSBRI report #1; ■The maximum L1-RSRP measurement value; and ■ The difference values ​​of the remaining (M-1) largest L1-RSRP measurements.

7. The method according to claim 6, wherein, The difference values ​​of the remaining largest (M-1) L1-RSRP measurements correspond, in order, to either the CSI-RS resource set or the SSB resource set excluding the CRI. report #1 or remove the SSBRI mentioned above report The CSI-RS or SSB configured after #1.

8. A user equipment, comprising: processor; as well as Memory, which stores instructions The instructions, when executed by the processor, perform the method according to any one of claims 1-7.

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