Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure includes: a receiving unit that receives a plurality of specific configurations in association with a channel state information (CSI) report configuration; and a control unit that is configured to include, for a CSI report including CSI for each group, CSI based on a first specific configuration and CSI based on a second specific configuration among the plurality of specific configurations. According to one embodiment of the present disclosure, a CSI report associated with a group-based beam report can be appropriately utilized.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. Background Art

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates, low latency, etc. (Non-Patent Document 1). In addition, for the purpose of further large capacity and high performance of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel. 10-14) has been standardized.

[0003] Research is also underway on a successor system to LTE (for example, also referred to as the 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.).

[0004] Prior Art Documents

[0005] Non-Patent Documents

[0006] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall Description; Stage 2 (Release 8)", April 2010 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In Rel.15 and 16 NR, for group-based beam reporting which is set to be valid, each reporting UE can only report two different beam indexes for each report setting. Therefore, for Rel.17, research is underway to enable more than two groups to be reported through group-based beam reporting.

[0009] However, a method for appropriately determining which beam indexes a UE can simultaneously receive has not been studied. If this is not clarified, there is a concern that, for example, the base station may simultaneously transmit beams that the UE cannot simultaneously receive, resulting in a reduction in communication throughput.

[0010] Therefore, one of the objectives of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately utilize CSI reports associated with group-based beam reporting.

[0011] Means for Solving the Problem

[0012] A terminal according to one aspect of the present disclosure includes: a receiving unit that receives a plurality of specific settings in association with a Channel State Information (CSI) report setting; and a control unit configured to include, for a CSI report including CSI for each group, CSI based on a first specific setting among the plurality of specific settings and CSI based on a second specific setting.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, it is possible to appropriately utilize a CSI report for SINR associated with group-based beam reporting. Description of the Drawings

[0015] Figure 1A And Figure 1B is a diagram showing an example of an RRC information element related to a CSI report setting and a CSI resource setting.

[0016] Figure 2A And Figure 2B is a diagram showing an example of an RRC information element related to an NZP CSI-RS resource set and a CSI-SSB resource set.

[0017] Figure 3 is a diagram showing an example of an RRC information element related to a TCI state.

[0018] Figure 4 is an excerpt of the RRC information element "CSI-ReportConfig".

[0019] Figure 5 is a diagram showing an example of a CSI report in Rel.15 NR.

[0020] Figure 6A and Figure 6B is a diagram showing an example of a CSI report for beam reports based on multiple groups according to the first embodiment.

[0021] Figure 7 is a diagram showing an example of a beam utilization environment envisioned for beam reports based on multiple groups.

[0022] Figure 8A and Figure 8B are diagrams showing examples of CSI reports for Embodiments 2-1 and 2-2, respectively.

[0023] Figure 9A and Figure 9B are diagrams showing examples of concerns regarding CSI reports for Embodiments 2-1 and 2-2, respectively.

[0024] Figure 10A and Figure 10B is a diagram showing an example of the setting of Embodiment 3-1.

[0025] Figures 11A - 11C is a diagram showing an example of applying the setting of Embodiment 3-1 to Mode 1 of beam reports based on multiple groups.

[0026] Figures 12A - 12C is a diagram showing an example of applying the setting of Embodiment 3-1 to Mode 2 of beam reports based on multiple groups.

[0027] Figures 13A - 13C is a diagram showing an example of the setting of Embodiment 3-2.

[0028] Figure 14A and Figure 14B is a diagram showing an example of the setting of Embodiment 3-3.

[0029] Figure 15 is a diagram showing an example of the setting of Embodiment 3-4.

[0030] Figure 16 is a diagram showing an example of the schematic structure of a wireless communication system according to an embodiment.

[0031] Figure 17 is a diagram showing an example of the structure of a base station according to an embodiment.

[0032] Figure 18 is a diagram showing an example of the structure of a user terminal according to an embodiment.

[0033] Figure 19 is a diagram showing an example of the hardware structure of a base station and a user terminal according to an embodiment. Detailed Implementation Manner

[0034] (CSI)

[0035] In NR, the UE uses reference signals (or the resources for these reference signals) to measure the channel state and feedbacks (reports) the channel state information (Channel State Information (CSI)) to the network (e.g., the base station).

[0036] The UE can also use at least one of the Channel State Information Reference Signal (CSI-RS), Synchronization Signal / Broadcast Channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, Synchronization Signal (SS), DeModulation Reference Signal (DMRS), etc. to measure the channel state.

[0037] The CSI-RS resources can also include at least one of the Non Zero Power (NZP) CSI-RS resources, Zero Power (ZP) CSI-RS resources, and CSI Interference Measurement (CSI-IM) resources.

[0038] The resources for measuring the signal components for CSI can also be referred to as Signal Measurement Resource (SMR), Channel Measurement Resource (CMR). For example, SMR (CMR) can also include NZP CSI-RS resources, SSB, etc. for channel measurement.

[0039] The resources for measuring the interference components for CSI can also be referred to as Interference Measurement Resource (IMR). For example, IMR can also include at least one of the NZP CSI-RS resources, SSB, ZP CSI-RS resources, and CSI-IM resources for interference measurement.

[0040] The SS / PBCH block can also be a block that contains synchronization signals (e.g., Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS)) and PBCH (and the corresponding DMRS), and can also be referred to as an SS block (SSB), etc.

[0041] In addition, CSI can also include at least one of Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS / PBCH Block Resource Indicator (SSBRI), Layer Indicator (LI), Rank Indicator (RI), L1-RSRP (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal to Interference plus Noise Ratio), L1-SNR (Signal to Noise Ratio), etc.

[0042] CSI can also have multiple parts. CSI part 1 can also contain information with a relatively small number of bits (e.g., RI). CSI part 2 can also contain information with a relatively large number of bits (e.g., CQI) such as information determined based on CSI part 1.

[0043] Furthermore, CSI can also be classified into several CSI types. Depending on the CSI type, the types and sizes of the reported information can also be different. For example, it can also be defined as a CSI type (also referred to as type I CSI, CSI for single beam, etc.) set for communication using a single beam, and a CSI type (also referred to as type II CSI, CSI for multi-beam, etc.) set for communication using multiple beams. The usage purposes of the CSI type are not limited to this.

[0044] As a feedback method for CSI, periodic CSI (P-CSI) reporting, aperiodic CSI (A-CSI) reporting, semi-persistent CSI (SP-CSI) reporting, etc. are being studied.

[0045] The UE can also be notified of CSI measurement configuration information using higher layer signaling, physical layer signaling, or a combination thereof.

[0046] In the present disclosure, the higher layer signaling can also be, for example, any one of radio resource control (RRC) signaling, medium access control (MAC) signaling, broadcast information, or a combination thereof.

[0047] For example, the MAC signaling can also use a MAC control element (MAC CE), a MAC protocol data unit (PDU), etc. The broadcast information can also be, for example, a master information block (MIB), a system information block (SIB), minimum system information (remaining minimum system information (RMSI)), other system information (OSI), etc.

[0048] The physical layer signaling can also be, for example, downlink control information (downlink control information (DCI)).

[0049] The CSI measurement configuration information can also be configured, for example, using the RRC information element "CSI-MeasConfig". The CSI measurement configuration information can also include CSI resource configuration information (RRC information element "CSI-ResourceConfig"), CSI report configuration information (RRC information element "CSI-ReportConfig"), etc. The CSI resource configuration information is associated with the resources used for CSI measurement, and the CSI report configuration information is associated with how the UE performs CSI reporting.

[0050] Figure 1A And Figure 1BThis is a diagram showing an example of an RRC information element related to CSI report configuration and CSI resource configuration. In this example, an excerpt of the fields (which can also be called parameters) included in the information element is shown. Figure 1A and Figure 1B It is described using ASN.1 (Abstract Syntax Notation One) notation. Additionally, the drawings related to other RRC information elements (or RRC parameters) of the present disclosure are also described in the same notation.

[0051] As Figure 1A shown, the CSI report configuration information (“CSI-ReportConfig”) includes channel measurement resource information (“resourcesForChannelMeasurement”). In addition, the CSI report configuration information may also include interference measurement resource information (for example, NZP CSI-RS resource information for interference measurement (“nzp-CSI-RS-ResourcesForInterference”), CSI-IM resource information for interference measurement (“csi-IM-ResourcesForInterference”), etc.). These resource information corresponds to the ID (identifier) (“CSI-ResourceConfigId”) of the CSI resource configuration information.

[0052] In addition, the ID of the CSI resource configuration information corresponding to each resource information (which can also be called the CSI resource configuration ID) can be one or more identical values, or can be respectively different values.

[0053] As Figure 1B shown, the CSI resource configuration information (“CSI-ResourceConfig”) may also include the CSI resource configuration information ID, the CSI-RS resource set list information (“csi-RS-ResourceSetList”), the resource type (“resourceType”), etc. The CSI-RS resource set list may also include at least one of the information on NZP CSI-RS and SSB for measurement (“nzp-CSI-RS-SSB”) and the CSI-IM resource set list information (“csi-IM-ResourceSetList”).

[0054] The resource type indicates the time-domain behavior of the resource configuration and can be set to “aperiodic”, “semi-persistent”, “periodic”. For example, the corresponding CSI-RS can also be called A-CSI-RS, SP-CSI-RS, P-CSI-RS respectively.

[0055] In addition, resources for channel measurement can also be used for the calculation of CQI, PMI, L1-RSRP, etc. In addition, resources for interference measurement can also be used for the calculation of L1-SINR, L1-SNR, L1-RSRQ, and other interference-related metrics.

[0056] When interference measurement is performed by CSI-IM, each CSI-RS for channel measurement can also be associated with the CSI-IM resource from the perspective of resources based on the order of the CSI-RS resources and CSI-IM resources in the corresponding resource set.

[0057] "nzp-CSI-RS-SSB" can also include NZP CSI-RS resource set list information ("nzp-CSI-RS-ResourceSetList") and SSB resource set list information for CSI measurement ("csi-SSB-ResourceSetList"). These list information respectively correspond to one or more NZP CSI-RS resource set IDs ("NZP-CSI-RS-ResourceSetId") and CSI-SSB resource set IDs ("CSI-SSB-ResourceSetId"), and can also be used to determine the resources to be measured.

[0058] Figure 2A And Figure 2B is a diagram showing an example of the RRC information element related to the NZP CSI-RS resource set and the CSI-SSB resource set.

[0059] As Figure 2A shown, the NZP CSI-RS resource set information ("NZP-CSI-RS-ResourceSet") includes the NZP CSI-RS resource set ID and one or more NZP CSI-RS resource IDs ("NZP-CSI-RS-ResourceId").

[0060] The NZP CSI-RS resource information ("NZP-CSI-RS-Resource") can also include the NZP CSI-RS resource ID and the ID of the transmission configuration indication state (TCI state) ("TCI-stateId"). The TCI state will be described later.

[0061] As Figure 2BAs shown, the CSI-SSB resource set information ("CSI-SSB-ResourceSet") includes a CSI-SSB resource set ID and more than one SSB index information ("SSB-Index"). The SSB index information is, for example, an integer from 0 to 63, and can also be used to identify the SSB within the SS burst.

[0062] Figure 3 It is a diagram showing an example of an RRC information element related to the TCI state.

[0063] The TCI state is information related to the Quasi-Co-Location (QCL) of a channel or a signal, and can also be referred to as spatial reception parameters, spatial relation information, etc. The TCI state can also be set or assigned to the UE for each channel or each signal.

[0064] As Figure 3 shown, the TCI state information ("TCI-State") can also include a TCI state ID and more than one QCL information ("QCL-Info"). The QCL information can also include at least one of information related to the reference signal of the QCL source (RS association information ("referenceSignal")) and information indicating the QCL type (QCL type information ("qcl-Type")). The RS association information can also include information such as the index of the RS (e.g., NZP CSI-RS resource ID, SSB index), the index of the serving cell, and the index of the BWP (Bandwidth Part) where the RS is located.

[0065] The UE can also, for at least one of a signal and a channel (referred to as a signal / channel), control reception processing (e.g., at least one of reception, demapping, demodulation, decoding, reception beam determination, etc.), transmission processing (e.g., at least one of transmission, mapping, modulation, coding, transmission beam determination, etc.), etc., based on the TCI state corresponding to the TCI state ID associated with the signal / channel.

[0066] In addition, in this disclosure, "A / B" can also mean "at least one of A and B".

[0067] As Figure 2A shown, for P-CSI-RS, the associated TCI state can also be set by RRC. In addition, for P-CSI-RS, SP-CSI-RS, and A-CSI-RS, the associated TCI state can also be determined based on higher layer signaling, physical layer signaling, or a combination thereof.

[0068] (Beam Management)

[0069] In Rel.15 NR, methods for beam management (BM) have been under study. In this beam management, beam selection is being studied based on the L1-RSRP reported by the UE. Changing (switching) the beam of a certain signal / channel may also be equivalent to changing at least one of the TCI state and QCL assumption of the signal / channel.

[0070] The UE can also use the uplink control channel (Physical Uplink Control Channel (PUCCH)) or the uplink shared channel (Physical Uplink Shared Channel (PUSCH)) to report (send) measurement results for beam management. The measurement results can also be, for example, CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, etc.

[0071] The measurement results (e.g., CSI) reported for beam management can also be referred to as beam measurement, beam measurement report, beam report, beam report CSI, etc.

[0072] The CSI measurement for beam reporting can also include interference measurement. The UE can also use the resources for CSI measurement to measure channel quality, interference, etc. and derive a beam report.

[0073] The beam report can also include the results of at least one of channel quality measurement and interference measurement. The results of channel quality measurement can also include, for example, L1-RSRP. The results of interference measurement can also include L1-SINR, L1-SNR, L1-RSRQ, other interference-related metrics (e.g., any metric other than L1-RSRP), etc.

[0074] Reference Figure 4 Describe the CSI report setting information for beam management of NR considering the current situation. Figure 4 It is an excerpt of the RRC information element "CSI-ReportConfig". Figure 4 Excerpted Figure 1A Other parts of the same CSI report setting information (CSI-ReportConfig).

[0075] The CSI report setting information may also include the "report quantity" (which may also be represented by the RRC parameter "reportQuantity") as the parameter information reported through a report instance (e.g., a CSI). The report quantity is defined by the type of ASN.1 object such as "choice". Therefore, one of the parameters (cri-RSRP, ssb-Index-RSRP, etc.) specified as the report quantity is set.

[0076] For each report setting, a UE in which the higher-layer parameters included in the CSI report setting information (e.g., the RRC parameter "groupBasedBeamReporting" related to group-based beam reporting) are set to be disabled may also include beam measurement resource IDs (e.g., SSBRI, CRI) with different numbers of the higher-layer parameters (e.g., the RRC parameter "nrofReportedRS" indicating the number of reported RSs) included in the CSI report setting information, and the measurement results (e.g., L1-RSRP) corresponding to each ID in the beam report (a report instance).

[0077] For each report setting, a UE in which groupBasedBeamReporting is set to be enabled may also include two different beam measurement resource IDs and two measurement results (e.g., L1-RSRP) corresponding to each ID in the beam report. In other words, a UE in which groupBasedBeamReporting is set to be enabled divides the DL-RS (e.g., CSI-RS) into two groups, and reports the ID and measurement value of the upper RS in each group. In addition, the two beam measurement resources (CSI-RS resource, SSB resource) may be simultaneously received by the UE using one spatial domain reception filter, or may be simultaneously received using multiple simultaneous spatial domain reception filters.

[0078] In addition, Figure 2A The NZP CSI-RS resource set information shown in may also include information related to the repetition of the resources within the resource set. The information related to the repetition may also indicate, for example, 'ON' or 'OFF'. In addition, 'ON' may also be represented as 'enabled' or 'valid', and 'OFF' may also be represented as 'disabled' or 'invalid'.

[0079] For example, for a resource set that is repeatedly set to 'on', the UE can also assume that the resources within the resource set are transmitted using the same downlink spatial domain transmission filter. In this case, the UE can also assume that the resources within the resource set are transmitted using the same beam (e.g., using the same beam from the same base station).

[0080] For a resource set that is repeatedly set to 'off', the UE can also perform the following control: It cannot be assumed (or, may not be assumed) that the resources within the resource set are transmitted using the same downlink spatial domain transmission filter. In this case, the UE can assume that the resources within the resource set are not transmitted using the same beam (transmitted using different beams). That is, for a resource set that is repeatedly set to 'off', the UE can assume that the base station is performing beam scanning.

[0081] In Rel.15 NR, the cri-RSRP and ssb-Index-RSRP in the reporting quantity are associated with beam management. The UE that is set to report cri-RSRP reports the CRI and the L1-RSRP corresponding to the CRI. The UE that is set to report ssb-Index-RSRP reports the SSBRI and the L1-RSRP corresponding to the CRI.

[0082] Figure 5 It is a diagram showing an example of CSI reporting in Rel.15 NR. It represents the mapping order of the CSI fields included in one CSI report (the nth CSI report #n) defined in Table 6.3.1.1.2-8 of 3GPP TS 38.212 V15.7.0 for CSI / RSRP or SSBRI / RSRP reporting.

[0083] Figure 5 The CSI report can include more than one group of CRI / SSBRI and RSRP. The number of these groups can also be set by a higher layer parameter (e.g., the RRC parameter "nrofReportedRS") indicating the number of reference signal resources to be reported.

[0084] Regarding L1-RSRP reporting, when nrofReportedRS is set to 1 (as the value 'n1'), the RSRP#1, which is a field of a specific number of bits (e.g., m bits) representing the maximum measured value of L1-RSRP, is included in the CSI report. In Rel.15 NR, m = 7.

[0085] Regarding the L1-RSRP report, in the case where nrofReportedRS is set to a value greater than 1, or when groupBasedBeamReporting is set to be valid, the UE uses the report based on differential L1-RSRP. Specifically, the UE includes the RSRP #1 of the L1-RSRP representing the maximum measured value and the differential (Differential) RSRP #k in the same CSI report (report instance), where the differential (Differential) RSRP #k is calculated with reference to the maximum measured value (e.g., as the difference from this measured value) for the k-th (in Figure 5 it, k = 2, 3, 4) largest L1-RSRP. Here, the differential RSRP #k can also be a field of fewer bits (e.g., n bits) than the above specific quantity. In Rel.15 NR, n = 4.

[0086] In addition, when groupBasedBeamReporting is set to be valid, the UE includes RSRP #1 and differential RSRP #2 in the same CSI report.

[0087] Figure 5 The CRI / SSBRI #k in

[0088] is a field representing the CRI / SSBRI corresponding to RSRP #k or differential RSRP #k (in the case of including the report of RSRP #k or differential RSRP #k).

[0089] However, for future wireless communication systems (e.g., Rel.17 NR), research is being conducted on the extension of beam management association for user terminals (user terminal, User Equipment (UE)) with multiple panels (multi-panel), multiple transmission / reception points (multi Transmission / Reception Point (TRP)), etc. (e.g., beam reporting suitable for multiple TRPs).

[0090] The above groupBasedBeamReporting can report two groups through one report, so it is suitable for situations such as multi-TRP transmission and multi-panel reception. For example, it can be used to report the best beam of TRP1 as RSRP #1 and the best beam of TRP2 as differential RSRP #2.

[0091] In Rel.16 NR, the introduction of L1-SINR reporting is being studied. Regarding the calculation of L1-SINR, the UE can also be configured with at least one of NZP CSI-RS resources and SSB resources for channel measurement, and at least one of NZP CSI-RS resources and CSI-IM resources for interference measurement.

[0092] The UE configured with cri-SINR as the reporting quantity reports the CRI and the L1-SINR corresponding to the CRI. The UE configured with ssb-Index-SINR as the reporting quantity reports the SSBRI and the L1-SINR corresponding to the CRI.

[0093] The UE for which the higher layer parameters included in the CSI report configuration information (e.g., the RRC parameter “groupBasedBeamReporting” related to group-based beam reporting) are configured as disabled can also include, for each report configuration, beam measurement resource IDs (e.g., SSBRI, CRI) with different numbers of the higher layer parameters included in the CSI report configuration information (e.g., the RRC parameter “nrofReportedRSForSINR” indicating the number of RSs for which the SINR is reported), and the measurement results (e.g., L1-SINR) corresponding to each ID in the beam report (one or more report instances).

[0094] The UE for which groupBasedBeamReporting is configured as enabled can also include, for each report configuration, two different beam measurement resource IDs and two measurement results (e.g., L1-SINR) corresponding to each ID in the beam report. In addition, the two beam measurement resources (CSI-RS resources, SSB resources) can be received simultaneously by the UE using one spatial domain receive filter or using multiple simultaneous spatial domain receive filters.

[0095] In addition, groupBasedBeamReporting for SINR reporting can also be replaced with parameters such as “groupBasedBeamReportingForSINR”.

[0096] Regarding L1-SINR reporting, when nrofReportedRSForSINR is configured as 1 (as the value ‘n1’), SINR#1, which is a 7-bit field of the L1-SINR representing the maximum measured value, is included in the CSI report.

[0097] Regarding the L1-SINR report, when nrofReportedRSForSINR is set to be greater than 1, the UE uses the differential L1-SINR-based report. Specifically, the UE includes the SINR #1 of the L1-SINR representing the maximum measured value and the differential SINR #k in the same CSI report (report instance), where the differential SINR #k is calculated with reference to the maximum measured value (e.g., as the difference from the measured value) for the k-th (k = 2, 3, 4) largest L1-SINR. Here, the differential SINR #k can also be a 4-bit field.

[0098] In addition, SINR #1 can also be a value quantized to 7 bits with a step size of 0.5 dB in the range of -23 dB or more and 40 dB or less. The differential SINR #k can also be a value quantized to 4 bits with a step size of 1 dB. In addition, the range, step size, etc. of each value are not limited to these.

[0099] As described so far, in Rel.15 and 16, for UEs for which group-based beam reporting is set to be effective, only two different CRI / SSBRIs (which can also be replaced by beam indices) can be reported for each report setting. Therefore, for Rel.17, research is underway to enable reporting of more than two groups through group-based beam reporting.

[0100] However, a method for appropriately determining which beam indices the UE can receive simultaneously has not been studied. If this is not clarified, there is a concern, for example, that the base station will transmit beams that the UE cannot receive simultaneously, resulting in a reduction in communication throughput.

[0101] Therefore, the inventors of the present invention also considered setting the number of beam indices within a group to be 2 or more and came up with a preferred CSI report structure for group-based beam reporting. In addition, a method for appropriately determining the beams that the UE can receive simultaneously, the beams transmitted by the base station simultaneously, etc. was conceived.

[0102] Hereinafter, embodiments related to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods related to the respective embodiments can be applied separately or in combination.

[0103] In addition, in the present disclosure, a panel, an uplink (UL) transmission entity, a TRP, a spatial relationship, a control resource set (CORESET), a PDSCH, a codeword, a base station, an antenna port (e.g., a demodulation reference signal (DMRS) port), an antenna port group (e.g., a DMRS port group), a group (e.g., a code division multiplexing (CDM) group, a reference signal group, a CORESET group, a CORESET pool), etc. may also be replaced with each other. For example, a panel identifier (ID) and a panel may also be replaced with each other. A TRP ID and a TRP may also be replaced with each other.

[0104] In addition, in the present disclosure, a group may also be replaced with a set, a cluster, a panel, a group related to (reported) beams, etc.

[0105] In the following embodiments, a beam index may also be replaced with a CRI / SSBRI, for example. In addition, RSRP / SINR may also be replaced with a measurement result associated with any beam.

[0106] In addition, a name associated with CSI-RS may also be replaced with a corresponding name associated with SSB. For example, a CSI-RS resource may also be replaced with an SSB resource. In other words, CSI-RS may also be replaced with CSI-RS / SSB, and CRI may also be replaced with CRI / SSBRI.

[0107] (Wireless communication method)

[0108] <First Embodiment>

[0109] A UE for which group-based beam reporting is set to be valid may also report beam indexes related to a plurality of (e.g., M) groups for each reporting setting. In a CSI report, a plurality of (e.g., N) beam indexes may also be included for each of the above M groups. In a CSI report, a group index indicating the reported group may be included either explicitly or implicitly.

[0110] Here, M and N may each be specified in advance by a specification, may be determined based on UE capabilities (or reported UE capability information), or may be set by higher layer signaling or the like.

[0111] For example, M can also be set by a high-level parameter related to the number of groups of reporting objects (e.g., nrofReportedGroup). In addition, N can also be set by a high-level parameter related to the number of RSs of reporting objects (e.g., nrofReportedRS).

[0112] Both M and N can be determined based on the number of panels the UE has, or can be determined based on the number of TRPs sent to the UE (the set number of TRPs).

[0113] This M can either mean the number of groups to be reported or the maximum number of groups that can be reported. This N can either mean the number of beam indexes to be reported within a group or the maximum number of beam indexes that can be reported within a group. M can also be 2 or more. N can also be 2 or more. Additionally, N can be different for each group, or the corresponding N can be set or determined for each group.

[0114] In addition, the group-based beam reporting of the first embodiment can also be referred to as multi-group-based beam reporting, multi-group-based beam reporting, Rel.17 group-based beam reporting, etc. The multi-group-based beam reporting can be implemented in the following cases: the high-level parameter representing group-based beam reporting (e.g., groupBasedBeamReporting), the high-level parameter representing Rel.17 group-based beam reporting (e.g., groupBasedBeamReporting-r17), or the high-level parameter representing multi-group-based beam reporting (e.g., multipleGroupBasedBeamReporting) is set to be valid.

[0115] The UE configured with multi-group-based beam reporting can also generate Figure 6A , Figure 6B and other CSI reports as shown and send them to the network.

[0116] Figure 6A and Figure 6B are diagrams showing an example of the CSI report for multi-group-based beam reporting according to the first embodiment. In this example, the fields included in the CSI report are shown, but the order of arrangement is not limited to these.

[0117] Figure 6A Shows a CSI report implicitly containing group indexes. In this CSI report, a set of fields for each group is included in the order of group #1 to #M. In the set of fields for each group, N beam indexes within the group and N RSRP / SINR and differential RSRP / SINR corresponding to each beam index are included. The UE and the base station can determine which group the field in the CSI report corresponds to based on the position of the field.

[0118] In addition, in the present disclosure, the set of fields of the group unit included in the CSI report may also be referred to as a report of the group unit, a group report, etc.

[0119] Figure 6B A CSI report that explicitly includes a group index is shown. Different from Figure 6A is that a group index field indicating the index of the group is included immediately before the group report. In addition, the position of the group index field is not limited to this.

[0120] In this example, the group reports are included in the order of group #1 to #M. However, by having a group index field, the group reports can be included in an arbitrary order in the CSI report. For example, even in the case of a CSI report in which the UE reports a group report regarding a group smaller than M (for example, a group selected from M groups), the base station can appropriately understand the reported group.

[0121] In addition, the group report may only include differential RSRP / SINR as a measurement result. The differential RSRP / SINR included in the group report of a certain group may also be calculated with reference to the SINR #1 of other groups. In addition, the group report may only include RSRP / SINR as a measurement result.

[0122] Hereinafter, in the present disclosure, the RSRP / SINR included in the group report may be replaced with normal (not differential with others) RSRP / SINR or differential RSRP / SINR.

[0123] Hereinafter, CRI is used as an example of the beam index included in the group report in the description, but CRI in the present disclosure may also be replaced with CRI or SSBRI.

[0124] According to the first embodiment described above, the UE can appropriately generate and report a CSI report for group-based beam reporting for multiple groups.

[0125] <Second Embodiment>

[0126] The second embodiment is associated with the multi-group-based beam reporting described in the first embodiment.

[0127] The second embodiment is roughly divided into the following two types:

[0128] · Embodiment 2-1: The UE can simultaneously receive multiple beams belonging to different groups,

[0129] · Embodiment 2-2: The UE can receive multiple beams belonging to the same group.

[0130] Hereinafter, with Figure 7Taking the environment of Figure 7 FIG. Figure 7 is a diagram showing an example of a beam utilization environment envisioned for beam reporting based on multiple sets.

[0131] In Figure 7 UE measures the resources of reference signals (CSI-RS) transmitted from two TRPs (TRP#1, #2). The UE has two panels (Panel #1, #2), and each panel can form different beams (B1-1, B1-2, B2-1, B2-2).

[0132] TRP#1 uses the resources of CRI#1-1 to CRI#1-4 corresponding to different beams respectively to transmit CSI-RS. TRP#2 uses the resources of CRI#2-1 to CRI#2-4 corresponding to different beams respectively to transmit CSI-RS. In the present disclosure, the beams of CRI#1-1 to CRI#1-4 can also be replaced with transmission beams #1-#4 respectively. In the present disclosure, the beams of CRI#2-1 to CRI#2-4 can also be replaced with transmission beams #5-#8 respectively.

[0133] In addition, each TRP and UE can either scan each beam and perform transmission and reception (using different times / frequencies), or use several beams simultaneously to perform transmission and reception.

[0134] In addition, Figure 7 FIG. Figure 7 is an example. For example, TRP#1 and #2 can also be replaced with two panels (Panel #1, #2) of a certain TRP.

[0135] Hereinafter, Embodiments 2-1 and 2-2 will be described together with the specific examples of CSI reports for beam reporting based on multiple sets as described above in Figure 6A and Figure 6B The UE sends this CSI report to at least one of TRP#1 and #2.

[0136] The RSRP / SINR corresponding to CRI#1-1 to CRI#1-4 can also be expressed as RSRP / SINR#1-1 to RSRP / SINR#1-4 respectively. The RSRP / SINR corresponding to CRI#2-1 to CRI#2-4 can also be expressed as RSRP / SINR#2-1 to RSRP / SINR#2-4 respectively.

[0137] In addition, hereinafter, the resources corresponding to a certain CRI can also be expressed only as a certain CRI (for example, CRI#1-1 can mean either CRI#1-1 or the resources corresponding to CRI#1-1).

[0138] [Embodiment 2-1]

[0139] In Embodiment 2-1, for the reported beam indices within a certain group, the UE may not expect (based on the corresponding TCI state) to receive these beams simultaneously (or it can also be considered that they cannot be received simultaneously).

[0140] In Embodiment 2-1, for the reported beam indices for multiple different groups, the UE is able to receive these beams simultaneously (based on the corresponding TCI state).

[0141] In addition, in the present disclosure, simultaneously receiving each beam related to multiple beam indices may also mean receiving the beam measurement resources (CSI-RS resources, SSB resources) corresponding to these beam indices simultaneously using one or more spatial domain receiving filters.

[0142] The group reporting in Embodiment 2-1 may also be configured in accordance with the same rules as the case where group-based beam reporting was set to be invalid in Rel.15 / 16. For example, the group reporting may also include the beam indices of the number of nrofReportedRS and the corresponding RSRP / SINR.

[0143] For example, the UE may also use different panels / antennas / transceiver units (TXRUs) (or panel / antenna / TXRU groups) for measurement. The beam indices within a group may also mean the beams measured by the same panel / antenna / TXRU. In this case, the group is synonymous with the panel / antenna / TXRU.

[0144] Regarding multi-TRP transmission, the network may also select multiple beams from the beams of different groups so as to ensure that the transmitted beams can be received simultaneously by the UE.

[0145] In Embodiment 2-1, the UE may also ensure (or be able to) receive the beams of different groups simultaneously. In addition, the network may either be able to transmit any multiple beams from different groups simultaneously or may not be able to transmit any multiple beams from different groups.

[0146] [Embodiment 2-2]

[0147] In Embodiment 2-2, different from Embodiment 2-1, for the reported beam indices within a certain group, the UE is able to receive these beams simultaneously (based on the corresponding TCI state).

[0148] In Embodiment 2-2, for the reported beam indices for multiple different groups, the UE may not expect (based on the corresponding TCI state) to receive (or it can be considered that they cannot be received simultaneously) these beams.

[0149] The multiple beams corresponding to the reported beam indices within a group are equivalent to a combination of good beams recommended by the UE. That is, these beams have preferred relationships such as small inter-beam interference, large spatial isolation, or large antenna distance.

[0150] A UE having multiple panels can also sequentially (or alternately) use different panels for measurement. The beam indices within a group can also mean the beams measured through the same panel / antenna / TXRU. The UE can either include the measurement results of the beams measured through these different panels in the same group report or in the same CSI report. How to include the measurement results of the beams in the CSI report can also be determined by the installation dependency. The measurement of sequentially using such different panels can also be applied to one or both of the L1-RSRP-based beam report and the L1-SINR-based beam report.

[0151] A UE having multiple panels can also simultaneously use all panels (e.g., use one TXRU group from each panel) for measurement. The UE can also determine a good combination of transmission beams with small inter-beam interference based on the above measurement. The specific measurement behavior will be described later. The measurement of simultaneously using all such panels can also be applied to, for example, the L1-SINR-based beam report.

[0152] [Examples of CSI Reports in Embodiments 2-1 and 2-2]

[0153] Figure 8A and Figure 8B are diagrams respectively showing an example of the CSI report in Embodiment 2-1 and Embodiment 2-2. In this example, it is assumed that M and N described in the first embodiment are 2 respectively.

[0154] As an example of Embodiment 2-1, if the best CRI for Group #1 is CRI#1-1 and the second best CRI is CRI#1-2, and the best CRI for Group #2 is CRI#2-2 and the second best CRI is CRI#2-3, then the UE can also report Figure 8A of the CSI report to the network (e.g., TRP).

[0155] For multi-TRP / multi-panel transmission, the base station receiving this CSI report can also select CRI#1-1 from Group #1 and CRI#2-2 from Group #2.

[0156] The group can also be equivalent to the TRP. In this case, the TRP can one-to-one grasp the best beam of one panel of the UE through one group report. Figure 8A The group of the CSI report of

[0157] As an example of Embodiment 2-2, if the best CRI for Group #1 is CRI#1-1 and the second best CRI is CRI#2-3, and the best CRI for Group #2 is CRI#1-3 and the second best CRI is CRI#2-1, the UE can also report the Figure 8B CSI report to the network (e.g., a base station).

[0158] For multi-TRP / multi-panel transmission, the base station that receives this CSI report can also select CRI#1-1 and #2-3 from Group #1.

[0159] A group can also correspond to multiple TRPs (or multiple panels). In other words, a group report can also include beam indices corresponding to multiple TRPs (or multiple panels).

[0160] As described above, a group report can include either a beam index corresponding to only one TRP (or one panel) or a beam index corresponding to multiple TRPs (or multiple panels). Information regarding whether a certain group report includes a beam index corresponding to only one TRP (or one panel) can also be notified to the UE using higher layer signaling or the like.

[0161] In addition, the multi-group based beam report of Embodiment 2-1 (a CSI report that does not assume simultaneous reception of beams with beam indices within a group) can also be referred to as Mode 1 of the multi-group based beam report.

[0162] Furthermore, the multi-group based beam report of Embodiment 2-2 (a CSI report that can simultaneously receive beams with beam indices within a group) can also be referred to as Mode 2 of the multi-group based beam report.

[0163] The above-mentioned Mode 1 and Mode 2 can be supported by the UE either for one of them or for both.

[0164] According to the second embodiment described above, regarding the group-based beam report, the UE can appropriately determine which group's beams can be simultaneously received.

[0165] <Third Embodiment>

[0166] The third embodiment is associated with the setting of the multi-group based beam report described in the second embodiment.

[0167] When the UE does not know which transmission beam (CRI) corresponds to which TRP, it may include only CRIs related to the same TRP in the CSI report. Figure 9A And Figure 9B are diagrams respectively showing an example of concerns regarding the CSI reports of Embodiments 2-1 and 2-2.

[0168] In any one example, the reported CRI is equivalent to TRP#2. Regarding Figure 9A , the reported transmission beams across different groups are transmitted from the same TRP. Regarding Figure 9B , the reported transmission beams within the same group are transmitted from the same TRP.

[0169] In the case where the TRP cannot transmit multiple transmission beams simultaneously (for example, using beam scanning), the above CSI report is not applicable to multi-TRP transmission.

[0170] In other words, the combination of beams that the UE can receive simultaneously does not necessarily correspond to the combination of beams that the network side (TRP) can transmit simultaneously.

[0171] Therefore, as a third embodiment, the inventors of the present invention considered the set of beams that the TRP can transmit simultaneously and came up with a setting for enabling the UE to report a CSI report.

[0172] The third embodiment is roughly divided into the following two types:

[0173] · Embodiment 3-1: A plurality (maximum P) of CSI resource settings (CSI-ResourceConfig) are associated with one CSI report setting (CSI-ReportConfig) and set for the UE,

[0174] · Embodiment 3-2: A plurality (maximum P) of CSI-RS resource sets (for example, NZP-CSI-RS-ResourceSet) are associated with one CSI resource setting (CSI-ResourceConfig) that is associated with one CSI report setting (CSI-ReportConfig) and set for the UE,

[0175] · Embodiment 3-3: A plurality (maximum P) of groups of CSI-RS resources (for example, NZP-CSI-RS-Resource) are associated with one CSI-RS resource set (for example, NZP-CSI-RS-ResourceSet), and this one CSI-RS resource set (for example, NZP-CSI-RS-ResourceSet) is associated with one CSI resource setting (CSI-ResourceConfig) that is associated with one CSI report setting (CSI-ReportConfig) and set for the UE,

[0176] · Embodiment 3-4: Multiple (up to P) groups of CSI-RS ports are associated with one CSI-RS resource (e.g., NZP-CSI-RS-Resource) within one CSI-RS resource set (e.g., NZP-CSI-RS-ResourceSet), and this one CSI-RS resource set (e.g., NZP-CSI-RS-ResourceSet) is associated with one CSI resource configuration (CSI-ResourceConfig) that is associated with one CSI report setting (CSI-ReportConfig) and is set for the UE.

[0177] [Embodiment 3-1]

[0178] In Embodiment 3-1, for each CSI resource configuration, the following can also be applied:

[0179] · When the resource type is periodic / semi-persistent, the maximum number of CSI-RS resource sets that can be set for this CSI resource configuration is 1.

[0180] · When the resource type is aperiodic, the maximum number of CSI-RS resource sets that can be set for this CSI resource configuration is 16.

[0181] In Embodiment 3-1, for each CSI-RS resource set, the following can also be applied:

[0182] · The number K of CSI-RS resources within one CSI-RS resource set is at most 64.

[0183] · The total number of different CSI-RS resources for all CSI-RS resource sets is 128 or 128*P.

[0184] For a certain CSI resource configuration, for a resource set that is repeatedly set to 'off', the UE can also assume that the CSI-RS resources within this resource set are time-division multiplexed (TDM). Additionally, for a resource set that is repeatedly set to 'off', the UE can also assume that the CSI-RS resources within this resource set must be TDM, and FDM is not applied.

[0185] The UE may also assume that CSI-RS resources (e.g., CSI-RS resources of a first resource set and CSI-RS resources of a second resource set) between different CSI resource configurations are applied with at least one of TDM and Frequency Division Multiplexing (FDM). In other words, it may also be assumed that CSI-RS resources applied with FDM (e.g., multiple CSI-RS resources that are not of QCL type D (QCL-D)) are only allowed across different CSI resource configurations.

[0186] In Embodiment 3-1, one CSI resource configuration may also correspond to one TRP.

[0187] In addition, for multiple resource sets that are repeatedly set to 'off', the UE may also assume that CSI-RS resources between these multiple resource sets must be TDM, and FDM is not applied. For a resource set that is repeatedly set to 'off', the UE may also assume that CSI-RS resources within this resource set are applied with at least one of TDM and FDM. In this case, one CSI resource configuration may also correspond to multiple TRPs.

[0188] Figure 10A And Figure 10B is a diagram showing an example of the configuration of Embodiment 3-1.

[0189] Figure 10A is an example of the CSI association structure configured for the UE. In this example, CSI report configuration #0 includes CSI resource configurations #0 and #1. CSI resource configuration #0 is associated with resource set #0 (CSI-RS resource set #0), and in this resource set #0, four CSI-RS resources corresponding to CRI #1-1 to #1-4 are configured. CSI resource configuration #1 is associated with resource set #1 (CSI-RS resource set #1), and in this resource set #1, four CSI-RS resources corresponding to CRI #2-1 to #2-4 are configured.

[0190] If the example corresponding to Figure 7 is assumed, then both resource set #0 and #1 are set to repeat = 'off'.

[0191] Figure 10B is a diagram showing an example of the CSI report configuration of RRC used in the configuration of Embodiment 3-1. Corresponding to Figure 1AThe difference from the existing Rel.15 NR CSI report setting is that the resource information for channel measurement (resourcesForChannelMeasurement) corresponds to multiple CSI resource settings (up to maxNrofresourcesForChannelMeasurement). Accordingly, for one CSI report setting (CSI-ReportConfig), the UE is associated with multiple CSI resource settings related to CMR.

[0192] The UE can also be configured with FDM CSI-RS resources when it has the ability to support FDM CSI-RS resources (or send information related to this ability).

[0193] When multiple CSI-RS resources that are configured with FDM and not QCL-D are present, the UE can also use different UE panels to measure each CSI-RS resource. For example, when CRI#1-1 and #2-1 are configured, these resources are FDM and not QCL-D, the UE can also use different panels to measure these resources.

[0194] In addition, when multiple CSI-RS resources that are FDM and not QCL-D correspond to the same panel of the UE, the UE can also discard (or not perform) the measurement of at least one of these CSI-RS resources. The CSI-RS resources for which the UE can be considered to discard the measurement can be at least one of the following:

[0195] · Resources corresponding to a specific (e.g., maximum / minimum) CSI-RS resource ID,

[0196] · Resources corresponding to a specific (e.g., maximum / minimum) measurement value (RSRP / RSRQ / SINR).

[0197] The UE can also use the above panel to measure the non-discarded CSI-RS resources.

[0198] Furthermore, when multiple CSI-RS resources that are FDM and not QCL-D correspond to the same panel of the UE, the UE can also use the above panel to measure at least one of these CSI-RS resources and use other panels to measure at least one of the remaining CSI-RS resources.

[0199] The CSI-RS resources for which the UE can be considered to perform the measurement can be at least one of the following:

[0200] · Resources corresponding to specific (e.g., maximum / minimum) CSI-RS resource IDs,

[0201] · Resources corresponding to specific (e.g., maximum / minimum) measurement values (RSRP / RSRQ / SINR).

[0202] In addition, the UE may also assume that the CSI-RS resources for measurement using the above other panels are CSI-RS resources corresponding to at least one of the following:

[0203] · Resources corresponding to specific (e.g., second maximum / second minimum) CSI-RS resource IDs,

[0204] · Resources corresponding to specific (e.g., second maximum / second minimum) measurement values (RSRP / RSRQ / SINR).

[0205] Figures 11A - 11C FIG. is an example showing the application of the setting of Embodiment 3-1 to Mode 1 of multi-group-based beam reporting. In this example, it describes the case where the UE in the Figure 7 environment is set with the Figure 10A structure. In addition, in this example, the UE assumes that Panel #1 is associated with Group #1 and Panel #2 is associated with Group #2.

[0206] Figure 11A FIG. shows an example of the measurement results (e.g., L1-RSRP / L1-SINR) of each CRI (CRI#1-1 to #1-4, CRI#2-1 to #2-4) measured using Panel #1 and #2 of the UE respectively.

[0207] Figure 11B FIG. is an example of a CSI report that selects the two best beams for each group and each panel in the case where the setting of Embodiment 3-1 is not applied (when the TRP is not associated with the CSI resource setting, for example, when only 8 resources of CRI#1-1 to #1-4 and CRI#2-1 to #2-4 are associated with the CSI report setting) for the Figure 11A case.

[0208] In this case, the UE determines that the best CRI for Group #1 (Panel #1) is CRI#1-1, the second best CRI is CRI#1-3, the best CRI for Group #2 (Panel #2) is CRI#1-2, and the second best CRI is CRI#1-4 (for receiving Panel #2, the results of CRI#1-2 and CRI#2-2 are the same, and the results of CRI#1-4 and CRI#2-3 are the same, but which one to choose depends on the UE).

[0209] Thus, in a case where the setting of Embodiment 3-1 is not applied, the UE may report CRIs from the same TRP across different groups. Therefore, the network cannot schedule two beams from different groups for multi-TRP transmission based on the CSI report.

[0210] Figure 11C is a diagram showing an example of a CSI report in a case where the setting of Embodiment 3-1 is applied (configured Figure 10A with the structure) for Figure 11A the case where, for the best two beams from two TRP#1 measured using Panel #1 and the best two beams from two TRP#2 measured using Panel #2 are selected.

[0211] In this case, the UE determines that for Group #1 (Panel #1), the best CRI among the CRIs of CSI resource setting #0 associated with TRP#1 is CRI#1-1, and the second-best CRI is CRI#1-3. In addition, the UE determines that for Group #2 (Panel #2), the best CRI among the CRIs of CSI resource setting #1 associated with TRP#2 is CRI#2-2, and the second-best CRI is CRI#2-3.

[0212] Thus, in a case where the setting of Embodiment 3-1 is applied, the UE reports CRIs from different TRPs for different groups. Therefore, the network can schedule two beams from different groups for multi-TRP transmission based on the CSI report.

[0213] Figures 12A - 12C is a diagram showing an example of applying the setting of Embodiment 3-1 to Mode 2 of beam reporting based on multiple groups. In this example, it describes the case where the UE in Figure 7 the environment is configured with Figure 10A the structure.

[0214] Figure 12A It is Figure 11A substantially the same as, but the difference is that the measurement results of CRI#2-2 and #2-3 of receiving Panel #2 are Figure 11A worse.

[0215] Figure 12B is a diagram showing an example of a CSI report in a case where the setting of Embodiment 3-1 is not applied, for Figure 12A the case where the best two beams measured by different panels are selected for each group.

[0216] In this case, for group #1, the CRI selected as the best from all the CRIs by the UE is CRI #1-2 of panel #2, and the second-best CRI that belongs to a panel different from panel #2 is CRI #1-1 of panel #1. In addition, for group #2, the CRI selected as the best from the remaining CRIs by the UE is CRI #1-4 of panel #2, and the second-best CRI that belongs to a panel different from panel #2 is CRI #1-3 of panel #1.

[0217] Thus, when the setting of Embodiment 3-1 is not applied, sometimes the UE reports CRIs from the same TRP within a group. Therefore, the network cannot schedule two beams from the same group for multi-TRP transmission based on the CSI report.

[0218] Figure 12C It shows the case where the setting of Embodiment 3-1 is applied (the configured Figure 10A structure), for Figure 12A the situation, an example of a CSI report that selects the best beam from a TRP measured using panel #1 and the best beam from a TRP measured using panel #2 for each group.

[0219] In this case, for group #1, the CRI selected as the best from the CRIs corresponding to TRP #1 in receiving panel #1 is CRI #1-1, and the CRI selected as the best from a TRP #2 different from TRP #1 in receiving panel #2 is CRI #2-2. In addition, for group #2, the CRI selected as the best from the CRIs corresponding to TRP #2 in receiving panel #1 is CRI #2-3, and the CRI selected as the best from a TRP #1 different from TRP #2 in receiving panel #2 is CRI #1-2.

[0220] Thus, when the setting of Embodiment 3-1 is applied, the UE reports CRIs from different TRPs within a group. Therefore, the network can schedule two beams from the same group for multi-TRP transmission based on the CSI report.

[0221] [Embodiment 3-2]

[0222] In Embodiment 3-2, the following can also be applied to each CSI resource setting:

[0223] · When the resource type is periodic / semi-persistent, the maximum number of CSI-RS resource sets that can be set for this CSI resource setting is P.

[0224] · When the resource type (resourceType) is non-periodic, the maximum number of CSI-RS resource sets that can be set for this CSI resource is 16*P.

[0225] In addition, in association with non-periodic CSI-RS, the UE can also be set, for each CSI resource and in the non-periodic trigger state (RRC parameters "CSI-AperiodicTriggerStateList", "CSI-AperiodicTriggerState", or "CSI-AssociatedReportConfigInfo"), with a higher-layer parameter for selecting two CSI-RS resource sets from this CSI resource setting.

[0226] Furthermore, in association with non-periodic CSI-RS, the UE can also be set, for each CSI resource and in the non-periodic trigger state (RRC parameters "CSI-AperiodicTriggerStateList", "CSI-AperiodicTriggerState", or "CSI-AssociatedReportConfigInfo"), with a higher-layer parameter for selecting one CSI-RS resource set and one SSB resource set from this CSI resource setting.

[0227] For a resource set that is repeatedly set to 'off', the UE can also assume that the CSI-RS resources within this resource set are TDM. Additionally, for a resource set that is repeatedly set to 'off', the UE can also assume that the CSI-RS resources within this resource set must be TDM and FDM is not applied.

[0228] The UE can also assume that CSI-RS resources between different resource sets related to a certain CSI resource setting (e.g., CSI-RS resources of the first resource set and CSI-RS resources of the second resource set) are applied with at least one of TDM and FDM. In other words, it can also be assumed that CSI-RS resources that are FDM (e.g., these are multiple CSI-RS resources that are not of QCL type D (QCL-D)) are only allowed across different CSI resource settings.

[0229] In Embodiment 3-1, one CSI-RS resource set can also correspond to one TRP.

[0230] Figures 13A - 13C It is a diagram showing an example of the setting in Embodiment 3-2.

[0231] Figure 13AThis is an example of the structure associated with CSI set in the UE. In this example, CSI report setting #0 includes CSI resource setting #0. CSI resource setting #0 is associated with resource set #0 (CSI-RS resource set #0) and resource set #1 (CSI-RS resource set #1). In this resource set #0, four CSI-RS resources corresponding to CRI #1-1 to #1-4 are set. In this resource set #1, four CSI-RS resources corresponding to CRI #2-1 to #2-4 are set.

[0232] If we assume an example corresponding to Figure 7 then both resource sets #0 and #1 are set to repetition = 'off'.

[0233] Figure 13B And Fig. 13C is an example of a diagram showing report setting information (CSI-AssociatedReportConfigInfo) associated with the trigger state of the RRC used in the setting of Embodiment 3-2. In Rel.17 NR, the name CSI-AssociatedReportConfigInfo-r17 is used as a parameter scheduled for import, but the name is not limited to this.

[0234] Figure 13B The difference from the existing report setting information (CSI-AssociatedReportConfigInfo) associated with the trigger state in Rel.15 NR is that the resource set (resourceSet) of NZP-CSI-RS included in the channel measurement resource information (resourcesForChannel) corresponds to multiple (up to maxNrofresourcesets) CSI-RS resource sets (IDs). Thus, the UE is associated with multiple CMR-related CSI-RS resource sets for one CSI resource setting (CSI-ResourceConfig).

[0235] In addition, Figure 13B the ID of the NZP-CSI-RS resource set (NZP-CSI-RS-ResourceSetID) can also be replaced with an integer value (INTEGER(1..maxNrofNZP-CSI-RS-ResourceSetsPerConfig)) representing the entry number of the list (nzp-CSI-RS-ResourceSetList) of NZP-CSI-RS resource sets included in the CSI resource setting. Here, maxNrofNZP-CSI-RS-ResourceSetsPerConfig is the maximum number of NZP-CSI-RS resource sets per CSI resource setting), etc.

[0236] Figure 13C The difference from the existing report setting information (CSI-AssociatedReportConfigInfo) associated with the trigger state in Rel.15 NR is that the ASN.1 object type of the resource set of NZP-CSI-RS included in the resources for channel measurement (resourcesForChannel) is not "CHOICE" but "SEQUENCE (SEQUENCE)". Thus, the UE can determine that one CSI-RS resource set and one SSB resource set are associated with one CSI resource configuration (CSI-ResourceConfig).

[0237] [Embodiment 3-3]

[0238] In Embodiment 3-3, for a resource set repeatedly set to 'off', the UE can also assume that the CSI-RS resources within the group (resource group) of this resource set are TDM. Additionally, for a resource set repeatedly set to 'off', the UE can also assume that the CSI-RS resources within the resource group of this resource set must be TDM, and FDM is not applied.

[0239] The UE can also assume that at least one of TDM and FDM is applied to the CSI-RS resources between different resource groups related to a certain resource set (for example, the CSI-RS resources of the first group and the CSI-RS resources of the second resource group). In other words, it can also be assumed that the CSI-RS resources subject to FDM (for example, these are multiple CSI-RS resources that are not of QCL type D (QCL-D)) are only allowed across different resource groups.

[0240] In Embodiment 3-3, regarding the number K of CSI-RS resources set for each CSI-RS resource set, any one of the following can also be applied:

[0241] ·K is at most 64. The CSI-RS resources associated with the i-th (for example, i = 1, 2,...) resource group correspond to the i-th set of CSI-RS resource indices. Here, the i-th set corresponds to the i-th set in the set of indices divided by every K / P (which can be rounded, carried, discarded, etc.) starting from the smaller (or larger) side of the CSI-RS resource indices.

[0242] ·K is at most 64*P. The CSI-RS resources associated with the i-th (e.g., i = 1, 2,...) resource group correspond to the i-th set of CSI-RS resource indices. Here, the i-th set is equivalent to the i-th set among the sets of indices divided by every K starting from the smaller (or larger) CSI-RS resource index.

[0243] In Embodiment 3-3, one resource group may also correspond to one TRP.

[0244] In addition, for multiple groups within a resource set that are repeatedly set to 'off', the UE may also assume that the CSI-RS resources between the multiple groups must be TDM, and FDM is not applied. For the groups within the resource set that are repeatedly set to 'off', the UE may also assume that at least one of TDM and FDM is applied to the CSI-RS resources within the group. In this case, one group may also correspond to multiple TRPs.

[0245] Figure 14A and Figure 14B is a diagram showing an example of the setting of Embodiment 3-3.

[0246] Figure 14A is an example of the structure related to CSI set in the UE. In this example, CSI report setting #0 includes CSI resource setting #0. CSI resource setting #0 is associated with resource set #0 (CSI-RS resource set #0). In this resource set #0, group #1 and #2 are set. In group #1, four CSI-RS resources corresponding to CRI #1-1 to #1-4 are set. In group #2, four CSI-RS resources corresponding to CRI #2-1 to #2-4 are set. Thus, one group may also correspond to one TRP.

[0247] In addition, if we assume the example corresponding to Figure 7 then both group #0 and #1 are set to repeat = 'off'.

[0248] Figure 14B is an example of the structure related to CSI set in the UE. The difference from Figure 14A is that in group #1, four CSI-RS resources corresponding to CRI #1-1, #1-2, #2-3, #2-4 are set. In group #2, four CSI-RS resources corresponding to CRI #1-3, #1-4, #2-1, #2-2 are set. Thus, one group may also correspond to multiple TRPs.

[0249] [Embodiment 3-4]

[0250] In Embodiment 3-4, for a resource set that is repeatedly set to 'off', the UE may also assume that the CSI resources of the resource set are TDM. Additionally, for a resource set that is repeatedly set to 'off', the UE may also assume that each CSI-RS resource of the resource set must be TDM, and FDM is not applied.

[0251] In Embodiment 3-4, one CSI-RS resource may also support a specific number of ports (or port groups) (e.g., 2 ports, 4 ports). When the number of ports (or port groups) is 2, the CSI-RS resource of the first port (or port group) may be associated with one TRP, and the CSI-RS resource of the second port (or port group) may be associated with another TRP. When the number of ports (or port groups) is 4, the CSI-RS resources of the first and second ports (or port groups) may be associated with one TRP, and the CSI-RS resources of the third and fourth ports (or port groups) may be associated with another TRP.

[0252] In Embodiment 3-4, one CSI-RS port (or port group) may also correspond to one TRP.

[0253] Figure 15 FIG. is an example of the setting of Embodiment 3-4. Figure 15 FIG. is an example of the structure of CSI association set in the UE. In this example, CSI report setting #0 includes CSI resource setting #0. CSI resource setting #0 is associated with resource set #0 (CSI-RS resource set #0). In this resource set #0, CSI-RS resources #1-#4 are set. This resource set #0 is set to repeat = 'off'. Each resource is respectively associated with a group of ports corresponding to the TRP (Port #1, #2,...).

[0254] According to the third embodiment described above, the UE is set with CSI related to the TRP considered, so that it can appropriately report a CSI report considering the group of beams that can be simultaneously transmitted from the TRP.

[0255] <Fourth Embodiment>

[0256] The fourth embodiment is associated with the report of the setting for beam report based on multiple groups described in the third embodiment.

[0257] For mode 1 beam report based on multiple groups, the UE may also send information related to the number (which may also be referred to as N1) of transmission beams (CRI) associated with the same TRP within the reported group (e.g., capability information (UE capability (UEcapability))).

[0258] Regarding Embodiment 3-1, the CRI within the same resource setting is included in one reporting group, but it may not be included across different reporting groups. For example, in Figure 11C the case of, it corresponds to N1 = 2.

[0259] Regarding Embodiment 3-2, the CRI within the same resource set is included in one reporting group, but it may not be included across different reporting groups.

[0260] Regarding Embodiment 3-3, the CRI within the same resource group is included in one reporting group, but it may not be included across different reporting groups.

[0261] Regarding Embodiment 3-4, the CRI within the same port group is included in one reporting group, but it may not be included across different reporting groups.

[0262] For mode 2 multi-group based beam reporting, the UE may also send information related to the number (which may also be referred to as N2) of transmission beams (CRIs) associated with different TRPs within the reported group (e.g., capability information (UE capability (UEcapability))).

[0263] Regarding Embodiment 3-1, the CRI of different resource settings is included in one reporting group, but the CRI within the same resource setting may not be included in one reporting group. For example, in Figure 12C the case of, it corresponds to N2 = 2.

[0264] Regarding Embodiment 3-2, the CRI of different resource sets is included in one reporting group, but the CRI within the same resource set may not be included in one reporting group.

[0265] Regarding Embodiment 3-3, the CRI of different resource groups is included in one reporting group, but the CRI within the same resource group may not be included in one reporting group.

[0266] Regarding Embodiment 3-4, the CRI of different port groups is included in one reporting group, but the CRI within the same port group may not be included in one reporting group.

[0267] According to the fourth embodiment described above, the network can appropriately perform settings related to CSI considering the TRP for the UE based on the information reported from the UE.

[0268] <Others>

[0269] In addition, in the present disclosure, a group may also correspond to a panel (or panel index) of a UE. In this case, the UE may also be considered as measuring the beams / RSs of each group in each panel of the UE. The UE may also be considered as receiving the beams of multiple groups simultaneously (using different panels).

[0270] Furthermore, in the present disclosure, a group may also correspond to a panel (or panel index) of a TRP (or base station). In this case, the UE may also be considered as the beams / RSs of each group being transmitted from the panels of each TRP (or base station). The UE may be considered as either capable of receiving the beams of multiple groups simultaneously or not capable of receiving the beams of multiple groups simultaneously.

[0271] Here, the panel of the UE, the panel of the TRP (or base station), etc. may also be interchangeable with an RS group, an antenna port group, a spatial relationship group, a QCL group, a TCI state group, a CORESET group, etc.

[0272] (Wireless communication system)

[0273] Hereinafter, the structure of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, any one or a combination of the above-described wireless communication methods according to the various embodiments of the present disclosure is used for communication.

[0274] Figure 16 FIG. is an example showing a schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 may also be a system that realizes communication by using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the 5th generation mobile communication system New Radio (5G NR), or the like.

[0275] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (RATs). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and so on.

[0276] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the Secondary Node (SN). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0277] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both the MN and the SN are base stations (gNBs) of NR (NR-NR Dual Connectivity (NN-DC))).

[0278] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a - 12c) that is configured within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration, quantity, etc. of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

[0279] The user terminal 20 may also be connected to at least one of the multiple base stations 10. The user terminal 20 may also utilize at least one of Carrier Aggregation (CA) and Dual Connectivity (DC) that uses multiple Component Carriers (CCs).

[0280] Each CC may also be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may also be a frequency band below 6 GHz (sub-6 GHz), and FR2 may also be a frequency band above 24 GHz (above-24 GHz). Additionally, the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 may also correspond to a frequency band higher than FR2.

[0281] In addition, the user terminal 20 may also communicate in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0282] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on the Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to the relay station (relay) may also be referred to as an IAB node.

[0283] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may, for example, also include at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.

[0284] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, 5G, etc.

[0285] In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) can also be used. For example, in at least one of the Downlink (DL) and the Uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. can also be used.

[0286] The wireless access method can also be referred to as a waveform. Additionally, in the wireless communication system 1, in the wireless access methods of the UL and the DL, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be used.

[0287] As a downlink channel, in the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc., which are shared among the user terminals 20, can also be used.

[0288] Furthermore, as an uplink channel, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared among the user terminals 20, can also be used.

[0289] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through the PDSCH. User data, high-layer control information, etc. can also be transmitted through the PUSCH. In addition, the Master Information Block (MIB) can also be transmitted through the PBCH.

[0290] Low-layer control information can also be transmitted through the PDCCH. The low-layer control information can also include, for example, downlink control information (Downlink Control Information (DCI)), and the downlink control information includes scheduling information for at least one of the PDSCH and the PUSCH.

[0291] In addition, the DCI for scheduling the PDSCH can also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH can also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH can also be replaced by DL data, and the PUSCH can also be replaced by UL data.

[0292] In the detection of the PDCCH, the Control Resource Set (CORESET) and the search space can also be used. The CORESET corresponds to the resource for searching for DCI. The search space corresponds to the search area and search method for PDCCH candidates. One CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a certain search space based on the search space setting.

[0293] One search space can also correspond to PDCCH candidates equivalent to one or more aggregation levels. One or more search spaces can also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. in the present disclosure can also be replaced with each other.

[0294] Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), delivery confirmation information (which can also be referred to as Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) can also be transmitted via PUCCH. The random access preamble for establishing a connection with a cell can also be transmitted via PRACH.

[0295] In addition, in the present disclosure, the downlink, uplink, etc. can also be expressed without "link". Furthermore, it can also be expressed without "Physical" at the beginning of various channels.

[0296] In the wireless communication system 1, synchronization signal (Synchronization Signal (SS)), downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As the DL-RS, in the wireless communication system 1, cell-specific reference signal (Cell-specific Reference Signal (CRS)), channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), demodulation reference signal (DeModulation Reference Signal (DMRS)), positioning reference signal (Positioning Reference Signal (PRS)), phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0297] The synchronization signal can, for example, also be at least one of the primary synchronization signal (Primary Synchronization Signal (PSS)) and the secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) can also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. can also be referred to as reference signals.

[0298] In addition, in the wireless communication system 1, as the uplink reference signal (UL-RS), it is also possible to transmit a measurement reference signal (sounding reference signal (SRS)), a demodulation reference signal (DMRS), etc. In addition, DMRS can also be referred to as a user terminal specific reference signal (UE-specific Reference Signal).

[0299] (Base station)

[0300] Figure 17 FIG. is an example showing the structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. In addition, one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 may be provided respectively.

[0301] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it can also be assumed that the base station 10 also has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0302] The control unit 110 implements the overall control of the base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0303] The control unit 110 may also control the generation, scheduling (e.g., resource allocation, mapping), etc. of signals. The control unit 110 may also control the transmission / reception, measurement, etc. using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, a sequence, etc. to be transmitted as signals, and forward them to the transmission / reception unit 120. The control unit 110 may also perform call processing (setting, releasing, etc.) of communication channels, state management of the base station 10, management of radio resources, etc.

[0304] The transmitting and receiving unit 120 may also include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0305] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may also be composed of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be composed of a receiving processing unit 1212, an RF unit 122, and a measurement unit 123.

[0306] The transmitting and receiving antenna 130 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0307] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channels, uplink reference signals, etc.

[0308] The transmitting and receiving unit 120 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc., to form at least one of a transmitting beam and a receiving beam.

[0309] The transmitting and receiving unit 120 (transmitting processing unit 1211) may, for example, also perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc., on the data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0310] The transmission / reception unit 120 (transmission processing unit 1211) can also perform transmission processing such as channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering), Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

[0311] The transmission / reception unit 120 (RF unit 122) can also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 130.

[0312] On the other hand, the transmission / reception unit 120 (RF unit 122) can also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received through the transmission / reception antenna 130.

[0313] The transmission / reception unit 120 (reception processing unit 1212) can also perform reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. on the obtained baseband signal, and obtain user data, etc.

[0314] The transmitting and receiving unit 120 (measurement unit 123) may also perform measurements related to the received signal. For example, the measurement unit 123 may also perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may also perform measurements on received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0315] The transmission path interface 140 may also transmit and receive signals (backhaul signaling) between the device included in the core network 30, other base stations 10, etc., and may also obtain and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0316] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140.

[0317] In addition, the transmitting and receiving unit 120 may also send a plurality of specific settings to the user terminal 20 in association with the Channel State Information (CSI) report setting.

[0318] The transmitting and receiving unit 120 may also receive a CSI report from the user terminal 20 that includes CSI for each group (in other words, one or more group reports that include one or more measurement results in group units), where the CSI report includes CSI based on a first specific setting among the plurality of specific settings and CSI based on a second specific setting.

[0319] (User Terminal)

[0320] Figure 18This is a diagram showing an example of the structure of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. Additionally, one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided respectively.

[0321] Furthermore, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it can also be assumed that the user terminal 20 further has other functional blocks required for wireless communication. A part of the processing of each unit described below may also be omitted.

[0322] The control unit 210 implements overall control of the user terminal 20. The control unit 210 can be constituted by a controller, a control circuit, etc. described based on the common knowledge in the technical field related to this disclosure.

[0323] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission / reception unit 220.

[0324] The transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 can be constituted by a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. described based on the common knowledge in the technical field related to this disclosure.

[0325] The transmission / reception unit 220 may be constituted as an integrated transmission / reception unit, or may be constituted by a transmission unit and a reception unit. The transmission unit may be constituted by the transmission processing unit 2211 and the RF unit 222. The reception unit may be constituted by the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0326] The transmission / reception antenna 230 can be constituted by an antenna described based on the common knowledge in the technical field related to this disclosure, such as an array antenna.

[0327] The transmission / reception unit 220 may also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission / reception unit 220 may also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0328] The transmission / reception unit 220 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc. to form at least one of a transmission beam and a reception beam.

[0329] The transmission / reception unit 220 (transmission processing unit 2211) may also perform, for example, PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210 to generate a bit string to be transmitted.

[0330] The transmission / reception unit 220 (transmission processing unit 2211) may also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted and output a baseband signal.

[0331] In addition, regarding whether to apply DFT processing, it may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is effective (enabled), the transmission / reception unit 220 (transmission processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform. In other cases, the transmission / reception unit 220 (transmission processing unit 2211) may not perform DFT processing as the above-mentioned transmission processing.

[0332] The transmission / reception unit 220 (RF unit 222) may also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0333] On the other hand, the transmission / reception unit 220 (RF unit 222) may also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received through the transmission / reception antenna 230.

[0334] The transmission / reception unit 220 (reception processing unit 2212) may also perform reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, etc. on the obtained baseband signal to obtain user data, etc.

[0335] The transmitting and receiving unit 220 (measurement unit 223) may also perform measurements related to the received signal. For example, the measurement unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may also perform measurements on received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0336] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230.

[0337] In addition, the transmitting and receiving unit 220 may also receive a plurality of specific settings in association with a Channel State Information (CSI) report setting (CSI-ReportConfig). The specific setting may be a CSI resource setting (CSI-ResourceConfig), a setting of a CSI resource set (e.g., NZP-CSI-RS-ResourceSet), a setting of a group of CSI resources (e.g., group information associated with NZP-CSI-RS-Resource), or a setting of a port group of CSI resources (e.g., port group information associated with NZP-CSI-RS-Resource).

[0338] The control unit 210 may also be configured to include, for a CSI report including CSI for each group (in other words, one or more group reports including one or more measurement results in group units), CSI based on the first specific setting (e.g., a setting associated with the first TRP) and CSI based on the second specific setting (e.g., a setting associated with the second TRP) among the plurality of specific settings.

[0339] The transmitting and receiving unit 220 may also send the above CSI report to the base station 10.

[0340] (Hardware Structure)

[0341] In addition, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented by a single device physically or logically combined, or can be implemented by two or more physically or logically separated devices directly or indirectly (e.g., by wire, wireless, etc.) connected with these multiple devices. A functional block can also be implemented by combining the above single device or the above multiple devices with software.

[0342] Here, among functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notification, communication, forwarding, configuration (setting), reconfiguration (resetting), allocation, mapping, assignment, etc., but not limited to these. For example, a functional block (structural unit) that implements a transmission function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0343] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure can also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 19 FIG. is an example of a hardware structure of a base station and a user terminal according to an embodiment. The above base station 10 and user terminal 20 can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0344] In addition, in the present disclosure, terms such as device, circuit, equipment, section, unit, etc. can be replaced with each other. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of each device shown in the figure, or can be configured not to include some devices.

[0345] For example, only one processor 1001 is illustrated, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or by other means. Further, the processor 1001 may also be implemented by one or more chips.

[0346] Regarding each function in the base station 10 and the user terminal 20, for example, by reading a specific software (program) into hardware such as the processor 1001 and the memory 1002, the processor 1001 performs operations and controls communication via the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003, thereby implementing the functions.

[0347] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may also be composed of a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, registers, etc. For example, at least a part of the above control unit 110 (210), transmission / reception unit 120 (220), etc. may also be implemented by the processor 1001.

[0348] In addition, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and performs various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments may be used. For example, the control unit 110 (210) may also be implemented by a control program stored in the memory 1002 and operating in the processor 1001, and the same applies to other functional blocks.

[0349] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (Read Only Memory (ROM)), an erasable programmable read-only memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable read-only memory (Electrically EPROM (EEPROM)), a random access memory (Random Access Memory (RAM)), and other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0350] The storage device 1003 may also be a computer-readable recording medium, which is composed of at least one of, for example, a flexible disc, a floppy (registered trademark) disc, an optical disc (such as a compact disc (Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray (registered trademark) disc), a removable disc, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage device 1003 may also be referred to as an auxiliary storage device.

[0351] The communication device 1004 is a hardware (transmitting and receiving device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, etc. In order to implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), transmitting and receiving antenna 130 (230), etc. may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be physically or logically separated and implemented by a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0352] The input device 1005 is an input device (such as a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (such as a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs output to the outside. In addition, the input device 1005 and the output device 1006 may also be of an integrated structure (such as a touch panel).

[0353] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be composed of a single bus or different buses may be used between each device.

[0354] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA). Part or all of the functional blocks may also be implemented using such hardware. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0355] (Variant example)

[0356] Furthermore, the terms described in this disclosure and the terms required for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may also be replaced with each other. In addition, a signal may also be a message. A Reference Signal can also be abbreviated as RS and may also be referred to as a Pilot, a pilot signal, etc. according to the applied standard. In addition, a Component Carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0357] A radio frame may also be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also have a fixed time length (e.g., 1 ms) independent of the numerology.

[0358] Here, the numerology may also refer to communication parameters applied in at least one of the transmission and reception of a certain signal or channel. For example, the numerology may also represent at least one of a SubCarrier Spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a Transmission Time Interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transmitter-receiver in the frequency domain, and a specific windowing process performed by a transmitter-receiver in the time domain.

[0359] A time slot can also be composed of one or more symbols (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot can also be a time unit based on a parameter set.

[0360] A time slot can also contain multiple mini-slots. Each mini-slot can also be composed of one or more symbols in the time domain. In addition, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a time slot. A Physical Downlink Shared Channel (PDSCH) (or Physical Uplink Shared Channel (PUSCH)) transmitted in a time unit larger than a mini-slot can also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (PUSCH) mapping type B.

[0361] A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol all represent time units when transmitting signals. A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol can also use their respective other names. In addition, time units such as frames, sub-frames, time slots, mini-slots, and symbols in this disclosure can also be replaced with each other.

[0362] For example, a sub-frame can also be referred to as a Transmission Time Interval (TTI), multiple consecutive sub-frames can also be referred to as a TTI, a time slot or a mini-slot can also be referred to as a TTI. That is, at least one of a sub-frame and a TTI can be a sub-frame (1 ms) in the existing Long Term Evolution (LTE), can also be a period shorter than 1 ms (for example, 1 - 13 symbols), and can also be a period longer than 1 ms. In addition, the unit representing a TTI can also not be referred to as a sub-frame, but as a time slot, a mini-slot, etc.

[0363] Here, a TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as the frequency bandwidth and transmission power that can be used in each user terminal) to each user terminal in units of TTI. In addition, the definition of a TTI is not limited to this.

[0364] A TTI can also be the transmission time unit of a data packet (transmission block), a code block, a codeword, etc. that has undergone channel coding, and can also become a processing unit for scheduling, link adaptation, etc. In addition, when a TTI is given, the actual time interval (such as the number of symbols) for mapping a transmission block, a code block, a codeword, etc. can also be shorter than this TTI.

[0365] In addition, when a time slot or a mini-slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini-slot) can also be the minimum time unit for scheduling. In addition, the number of time slots (mini-slots) that constitute the minimum time unit for this scheduling can also be controlled.

[0366] A TTI with a time length of 1 ms can also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than the normal TTI can also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a time slot, etc.

[0367] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be replaced with a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be replaced with a TTI having a TTI length less than that of the long TTI and 1 ms or more.

[0368] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and can also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers included in the RB can also be determined based on the parameter set.

[0369] In addition, the RB can also include one or more symbols in the time domain, and can also be the length of a time slot, a mini-slot, a subframe, or a TTI. One TTI, one subframe, etc. can also be composed of one or more resource blocks respectively.

[0370] In addition, one or more RBs can also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0371] In addition, a resource block can also be composed of one or more resource elements (REs). For example, one RE can also be a radio resource area of one subcarrier and one symbol.

[0372] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks) used by a certain parameter set in a certain carrier. Here, the common RBs may also be determined by the indices of the RBs based on the common reference point of the carrier. The PRBs may also be defined in a certain BWP and be assigned numbers within that BWP.

[0373] A BWP may also include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be set within a carrier.

[0374] At least one of the set BWPs may be active, and the UE may not assume to transmit and receive specific channels / signals outside the active BWP. In addition, "cell", "carrier", etc. in this disclosure may also be replaced with "BWP".

[0375] In addition, the above structures such as radio frames, subframes, time slots, mini - time slots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini - time slots included in a time slot, the symbols and the number of RBs included in a time slot or mini - time slot, the number of sub - carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be changed in various ways.

[0376] Furthermore, the information, parameters, etc. described in this disclosure can be represented by absolute values, relative values with respect to a specific value, or can also be represented by corresponding other information. For example, radio resources can also be indicated by a specific index.

[0377] In this disclosure, the names used for parameters, etc. are not restrictive names in all aspects. Furthermore, the mathematical formulas, etc. using these parameters can also be different from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, so the various names assigned to these various channels and information elements are not restrictive names in all aspects.

[0378] The information, signals, etc. described in this disclosure can also be represented using any one of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0379] In addition, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0380] The information, signals, etc. that are input and output can be stored in a specific location (e.g., a memory), or can be managed using a management table. The information, signals, etc. that are input and output can be overwritten, updated, or appended. The information, signals, etc. that are output can also be deleted. The information, signals, etc. that are input can also be sent to other devices.

[0381] The notification of information is not limited to the methods / embodiments described in this disclosure, and can also be performed using other methods. For example, the notification of information in this disclosure can also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0382] In addition, physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, for example, it may also be an RRC Connection Setup message, an RRC Connection Reconfiguration (RRC Connection Re-setting) message, etc. In addition, MAC signaling may also be notified, for example, using a MAC Control Element (MAC CE).

[0383] In addition, the notification of specific information (for example, the notification of "is X") is not limited to explicit notification, and may also be performed implicitly (for example, by not notifying the specific information, or by notifying other information).

[0384] The determination can be made by a value represented by one bit (0 or 1), or by a true / false value (Boolean value) represented by true or false, or by a numerical comparison (for example, comparison with a specific value).

[0385] Software, whether referred to as software, firmware, middleware, micro-code, hardware description language, or by any other name, should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, processes, functions, etc.

[0386] In addition, software, instructions, information, etc. can also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technologies (coaxial cable, optical fiber cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included in the definition of the transmission medium.

[0387] Terms such as "system" and "network" used in this disclosure can be used interchangeably. A "network" can also mean a device (e.g., a base station) included in the network.

[0388] In this disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", etc. can be used interchangeably.

[0389] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. can be used interchangeably. There are also cases where base stations are referred to using terms such as macro cell, small cell, femto cell, pico cell, etc.

[0390] A base station can accommodate one or more (e.g., three) cells. In the case where the base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within the coverage range.

[0391] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0392] There are also cases where the mobile station is referred to by subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0393] At least one of the base station and the mobile station can also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station can be a device mounted on a moving body, the moving body itself, etc. The moving body can be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station can also be an Internet of Things (IoT) device such as a sensor.

[0394] In addition, the base station in the present disclosure can also be replaced by a user terminal. For example, for a structure in which the communication between the base station and the user terminal is replaced by the communication between multiple user terminals (for example, it can also be referred to as Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), the various methods / embodiments of the present disclosure can also be applied. In this case, it can also be configured such that the user terminal 20 has the functions of the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to inter-terminal communication (for example, "side"). For example, the uplink channel, the downlink channel, etc. can also be replaced by side channels.

[0395] Similarly, the user terminal in the present disclosure can also be replaced by a base station. In this case, it can also be configured such that the base station 10 has the functions of the above-mentioned user terminal 20.

[0396] In the present disclosure, the actions performed by the base station sometimes may also be performed by its upper node according to the situation. Obviously, in a network including one or more network nodes having a base station, various operations for communicating with the terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering the Mobility Management Entity (MME), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0397] The various methods / embodiments described in the present disclosure can be used alone, in combination, or switched during execution. In addition, the processing procedures, sequences, flowcharts, etc. of the various methods / embodiments described in the present disclosure can also be reordered as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented in an exemplary order, but are not limited to the specific order presented.

[0398] Each mode / embodiment described in the present disclosure can also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth-generation mobile communication system (4G), the fifth-generation mobile communication system (5G), the sixth-generation mobile communication system (6G), the xth-generation mobile communication system (xG) (where x is, for example, an integer or a decimal), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, next-generation systems extended based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) and applied.

[0399] The description "based on" used in the present disclosure does not mean "only based on" unless otherwise specified. In other words, the description "based on" means both "only based on" and "at least based on".

[0400] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not comprehensively define the quantity or order of these elements. These terms can be used in this disclosure as a convenient method for distinguishing between more than two elements. Therefore, the reference to the first and second elements does not mean that only two elements can be adopted, or that the first element must take precedence over the second element in a certain form.

[0401] The term "determining" used in this disclosure may cover a variety of actions in some cases. For example, "determining" may also be a case where judging, calculating, computing, processing, deriving, investigating, looking up (searching, inquiring) (such as searching in a table, database, or other data structure), ascertaining, etc. are regarded as performing "determining".

[0402] In addition, "determining" may also be a case where receiving (for example, receiving information), transmitting (for example, transmitting information), input, output, accessing (for example, accessing data in a memory), etc. are regarded as performing "determining".

[0403] In addition, "determining" may also be a case where resolving, selecting, choosing, establishing, comparing, etc. are regarded as performing "determining". That is, "determining" may also be a case where some actions are regarded as performing "determining".

[0404] In addition, "determining" may also be replaced by "assuming", "expecting", "considering", etc.

[0405] As used in this disclosure, the terms "connected" and "coupled", or any variations thereof, mean all direct or indirect connections or couplings between two or more elements, and can include the case where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of them. For example, "connected" can also be replaced with "access".

[0406] In this disclosure, when two elements are connected, it is possible to consider using one or more wires, cables, printed electrical connections, etc., and electromagnetic energy having wavelengths in the radio frequency range, microwave region, optical (both visible and invisible) region, etc., as several non-limiting and non-exhaustive examples, and being "connected" or "coupled" to each other.

[0407] In this disclosure, the term "A is different from B" can also mean "A and B are different from each other". Additionally, this term can also mean "A and B are each different from C". Terms such as "separated" and "combined" can also be interpreted in the same way as "different".

[0408] When the terms "include", "including", and their variations are used in this disclosure, these terms, like the term "comprising", are meant in an inclusive sense. Furthermore, the term "or" used in this disclosure does not mean exclusive or.

[0409] In this disclosure, for example, in the case where articles are added through translation such as a, an, and the in English, this disclosure can also include the case where the nouns following these articles are in the plural form.

[0410] As described above, the invention related to this disclosure has been described in detail. However, for those skilled in the art, the invention related to this disclosure is obviously not limited to the embodiments described in this disclosure. The invention related to this disclosure can be implemented in the form of modifications and changes without departing from the gist and scope of the invention determined based on the claims. Therefore, the description of this disclosure is for illustrative purposes and does not carry any restrictive meaning with respect to the invention related to this disclosure.

Claims

1. A terminal, comprising: a receiving unit, configured to receive configuration information related to group-based beam reporting and channel state information (CSI) reporting configuration including information indicating a plurality of resource sets; and a control unit, configured to, when the group-based beam reporting is configured, control transmission of a CSI report including CSI for each group based on the plurality of resource sets, wherein the CSI report includes CSI for a plurality of groups, the configuration information related to group-based beam reporting is a higher layer parameter for configuring whether the group-based beam reporting is valid or invalid, and there are a first parameter and a second parameter different from the first parameter in the higher layer parameter, when the group-based beam reporting is configured to be valid by the first parameter or the second parameter, the plurality of resource sets are two resource sets, and the control unit controls transmission of the CSI report based on the two resource sets.

2. The terminal according to claim 1, wherein, each of the plurality of resource sets includes resources that can be received simultaneously in the terminal.

3. A wireless communication method of a terminal, comprising: a step of receiving configuration information related to group-based beam reporting and channel state information (CSI) reporting configuration including information indicating a plurality of resource sets; and a step of, when the group-based beam reporting is configured, controlling transmission of a CSI report including CSI for each group based on the plurality of resource sets, wherein the CSI report includes CSI for a plurality of groups, the configuration information related to group-based beam reporting is a higher layer parameter for configuring whether the group-based beam reporting is valid or invalid, and there are a first parameter and a second parameter different from the first parameter in the higher layer parameter, when the group-based beam reporting is configured to be valid by the first parameter or the second parameter, the plurality of resource sets are two resource sets, and transmission of the CSI report is controlled based on the two resource sets.

4. A base station, comprising: a transmitting unit, configured to transmit configuration information related to group-based beam reporting and channel state information (CSI) reporting configuration including information indicating a plurality of resource sets; and a control unit, configured to perform control for configuring the group-based beam reporting so that the terminal controls transmission of a CSI report including CSI for each group based on the plurality of resource sets, wherein the CSI report includes CSI for a plurality of groups, the configuration information related to group-based beam reporting is a higher layer parameter for configuring whether the group-based beam reporting is valid or invalid, and there are a first parameter and a second parameter different from the first parameter in the higher layer parameter, when the group-based beam reporting is configured to be valid by the first parameter or the second parameter, the plurality of resource sets are two resource sets, and the control unit performs control so that the terminal controls transmission of the CSI report based on the two resource sets.

5. A system including a terminal and a base station, wherein the terminal includes: a receiving unit, configured to receive configuration information related to group-based beam reporting and channel state information (CSI) reporting configuration including information indicating a plurality of resource sets; and A control unit, when the group-based beam reporting is configured, controls the transmission of a CSI report including CSI for each group based on the plurality of resource sets. The CSI report includes CSI for a plurality of groups. The configuration information related to the group-based beam reporting is a higher layer parameter that configures whether the group-based beam reporting is valid or invalid. There are a first parameter and a second parameter different from the first parameter in the higher layer parameter. When the group-based beam reporting is configured to be valid by the first parameter or the second parameter, the plurality of resource sets are two resource sets, and the control unit controls the transmission of the CSI report based on the two resource sets. The base station includes: A transmission unit that transmits the CSI report configuration.

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