Terminal, wireless communication method and base station

Abstract

A terminal according to one embodiment of the present disclosure includes: a control unit for determining, for each group, based on whether signals for multiple resource indicators corresponding to the same group and the measurement results of each panel can be simultaneously received, which panel includes the resource indicator in which position of the CSI report, for a channel state information report (CSI report) including multiple resource indicators and measurement results corresponding to each of the multiple resource indicators; and a sending unit for sending the CSI report. According to one embodiment of the present disclosure, the CSI report associated with the group-based beam report can be appropriately used.

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 the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP)).

[0003] Successor systems of LTE (also known as, for example, 5th generation mobile communication system (5G), 5G+(plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also being studied.

[0004] Prior art literature

[0005] Non-patent literature

[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 16NR, group-based beam reporting is set to be effective, and UE can only report two different beam indices for each report setting. Therefore, for Rel.17, research is being conducted on the extension of beam management associations for user terminals (user terminals, user equipment (UE)) with multiple panels (multi-panels), multiple transmission / reception points (multi-transmission / reception points (TRP)), etc.

[0009] However, in the case of extending the beam management association, research on how to construct CSI reports has not yet made progress. If this is not clarified, proper communication between TRP and UE cannot be carried out, and there is a concern that communication throughput will be reduced.

[0010] Therefore, one of the objects 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 reports.

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present invention is characterized in that it comprises: a control unit that, for each group, determines, for a channel state information report, i.e., a CSI report, which includes multiple resource indicators and measurement results corresponding to each of the multiple resource indicators, and determines, based on whether it is possible to simultaneously receive signals for multiple resource indicators corresponding to the same group and the measurement results of each panel, which panel the resource indicator is included in and at which position of the CSI report; and a sending unit that sends the CSI report.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, CSI reporting associated with group-based beam reporting can be appropriately utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A as well as Figure 1B This is a diagram showing an example of RRC information elements related to CSI reporting configuration and CSI resource configuration.

[0016] Figure 2A as well as Figure 2B This is a diagram showing an example of RRC information elements related to the NZP CSI-RS resource set and the CSI-SSB resource set.

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

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

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

[0020] Figure 6 This is a diagram showing an example of a beam utilization environment assumed based on a plurality of sets of beam reports.

[0021] Figure 7 This is a diagram showing an example of CSI reporting in mode 1 based on multiple groups of beam reports.

[0022] Figure 8 This is a diagram showing an example of CSI reporting in Mode 2 based on multiple groups of beam reports.

[0023] Fig. 9 This is a diagram showing an example of measurement results corresponding to the best RS in each TRP and multiple receiving panels.

[0024] Fig. 10A as well as Fig. 10B This is a diagram showing an example of mode 1 in which beam reports based on multiple groups are applied according to implementation example 1-2.

[0025] Fig.11 This is a diagram showing an example of CSI reporting in mode 2 based on multiple groups of beam reports involved in implementation mode 2-1.

[0026] Fig.12 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0027] Fig.13 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0028] Fig.14 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0029] Fig.15 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0030] (CSI)

[0031] In NR, the UE uses a reference signal (or the resources used for the reference signal) to measure the channel state and feeds back (reports) the channel state information (CSI) to the network (e.g., base station).

[0032] The UE may also use at least one of the Channel State Information Reference Signal (CSI-RS), the Synchronization Signal / Broadcast Channel (SS / PBCH) block, the Synchronization Signal (SS), the DeModulation Reference Signal (DMRS), etc. to measure the channel state.

[0033] The CSI-RS resources may also include at least one of non-zero power (NZP) CSI-RS resources, zero power (ZP) CSI-RS resources, and CSI interference measurement (CSI Interference Measurement (CSI-IM)) resources.

[0034] The resources used to measure the signal components for CSI may also be referred to as signal measurement resources (SMR) or channel measurement resources (CMR). SMR (CMR) may also include, for example, NZP CSI-RS resources and SSB used for channel measurement.

[0035] The resource used to measure the interference component for CSI may also be referred to as an interference measurement resource (Interference Measurement Resource (IMR)). The IMR may include, for example, at least one of an NZP CSI-RS resource, an SSB, a ZP CSI-RS resource, and a CSI-IM resource used for interference measurement.

[0036] The SS / PBCH block is a block that includes synchronization signals (for example, the primary synchronization signal (Primary Synchronization Signal (PSS)), the secondary synchronization signal (Secondary Synchronization Signal (SSS))) and the PBCH (and the corresponding DMRS), and may also be referred to as an SS block (SSB) or the like.

[0037] In addition, CSI may also include at least one of a channel quality indicator (Channel Quality Indicator (CQI)), a precoding matrix indicator (Precoding Matrix Indicator (PMI)), a CSI-RS resource indicator (CSI-RSResource Indicator (CRI)), a SS / PBCH block resource indicator (SS / PBCH Block Resource Indicator (SSBRI)), a layer indicator (Layer Indicator (LI)), a rank indicator (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), and L1-SNR (Signal to Noise Ratio).

[0038] CSI may include multiple parts. CSI part 1 may include information with a relatively small number of bits (for example, RI). CSI part 2 may include information with a relatively large number of bits (for example, CQI), such as information determined based on CSI part 1.

[0039] In addition, CSI may be classified into several CSI types. The type and size of the information reported may also be different according to the CSI type. For example, a CSI type set for communication using a single beam (also called type 1 (type I) CSI, single beam CSI, etc.) and a CSI type set for communication using multiple beams (also called type 2 (type II) CSI, multi-beam CSI, etc.) may be specified. The use of CSI types is not limited to this.

[0040] As a CSI feedback method, periodic CSI (Periodic CSI (P-CSI)) reporting, aperiodic CSI (Aperiodic CSI (A-CSI)) reporting, semi-persistent CSI (Semi-Persistent CSI (SP-CSI)) reporting, etc. are being studied.

[0041] The UE may also be notified of the CSI measurement setting information using higher layer signaling, physical layer signaling, or a combination thereof.

[0042] In the present disclosure, the high-layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0043] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (PDU), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (OSI), etc.

[0044] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

[0045] The CSI measurement configuration information may also be configured using, for example, the RRC information element "CSI-MeasConfig". The CSI measurement configuration information may 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 implements CSI reporting.

[0046] Figure 1A as well as Figure 1B This is a diagram showing an example of RRC information elements related to CSI reporting configuration and CSI resource configuration. In this example, an excerpt of fields (also referred to as parameters) included in the information element is shown. Figure 1A as well as Figure 1B ASN.1 (Abstract Syntax Notation One) notation is used for description. In addition, drawings related to other RRC information elements (or RRC parameters) of the present disclosure are also described using the same notation.

[0047] like Figure 1AAs shown, the CSI report configuration information ("CSI-ReportConfig") includes resource information for channel measurement ("resourcesForChannelMeasurement"). In addition, the CSI report configuration information may also include resource information for interference measurement (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 correspond to the ID (Identifier) ​​("CSI-ResourceConfigId") of the CSI resource configuration information.

[0048] In addition, the ID of the CSI resource configuration information corresponding to each resource information (may also be referred to as CSI resource configuration ID) may be one or more of the same value or different values.

[0049] like Figure 1B As shown, the CSI resource configuration information ("CSI-ResourceConfig") may also include a CSI resource configuration information ID, CSI-RS resource set list information ("csi-RS-ResourceSetList"), a resource type ("resourceType"), etc. The CSI-RS resource set list may also include at least one of the information of the NZP CSI-RS and SSB used for measurement ("nzp-CSI-RS-SSB"), and the CSI-IM resource set list information ("csi-IM-ResourceSetList").

[0050] The resource type indicates the time domain action of the resource setting, which can be set to "aperiodic", "semi-persistent", or "periodic". For example, the corresponding CSI-RS can also be called A-CSI-RS, SP-CSI-RS, and P-CSI-RS.

[0051] In addition, the channel measurement resources may be used, for example, in the calculation of CQI, PMI, L1-RSRP, etc. In addition, the interference measurement resources may be used in the calculation of L1-SINR, L1-SNR, L1-RSRQ, and other interference-related indices.

[0052] When interference measurement is performed using CSI-IM, each CSI-RS used for channel measurement may be associated with a CSI-IM resource from a resource perspective based on the order of CSI-RS resources and CSI-IM resources in the corresponding resource set.

[0053] "nzp-CSI-RS-SSB" may also include NZP CSI-RS resource set list information ("nzp-CSI-RS-ResourceSetList") and SSB resource set list information ("csi-SSB-ResourceSetList") for CSI measurement. These list information may also correspond to one or more NZP CSI-RS resource set IDs ("NZP-CSI-RS-ResourceSetId") and CSI-SSB resource set IDs ("CSI-SSB-ResourceSetId"), respectively, and are used to determine the resources of the measurement object.

[0054] Figure 2A as well as Figure 2B This is a diagram showing an example of RRC information elements related to the NZP CSI-RS resource set and the CSI-SSB resource set.

[0055] like Figure 2A As shown, the NZP CSI-RS resource set information ("NZP-CSI-RS-ResourceSet") includes an NZP CSI-RS resource set ID and one or more NZP CSI-RS resource IDs ("NZP-CSI-RS-ResourceId").

[0056] The NZP CSI-RS resource information ("NZP-CSI-RS-Resource") may include the NZP CSI-RS resource ID and the ID of the transmission configuration indication state (TCI state (Transmission Configuration Indication state)) ("TCI-stateId"). The TCI state will be described later.

[0057] like Figure 2B As shown, the CSI-SSB resource set information ("CSI-SSB-ResourceSet") includes a CSI-SSB resource set ID and one or more SSB index information ("SSB-Index"). The SSB index information is, for example, an integer greater than 0 and less than 63, and can also be used to identify the SSB in the SS burst.

[0058] Figure 3 This is a diagram showing an example of RRC information elements related to the TCI state.

[0059] The TCI state is information related to Quasi-Co-Location (QCL) of channels or signals, and may also be called spatial reception parameters, spatial relation information, etc. The TCI state may be set or assigned to the UE for each channel or each signal.

[0060] like Figure 3 As shown, TCI state information ("TCI-State") may also include a TCI state ID and one or more QCL information ("QCL-Info"). The QCL information may also include information related to the reference signal of the QCL source (RS associated information ("referenceSignal")) and at least one of the information indicating the QCL type (QCL type information ("qcl-Type")). The RS associated information may 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, the index of the BWP (Bandwidth Part) where the RS is located, and the like.

[0061] For at least one of the signal and the channel (expressed as signal / channel), the UE can also control the receiving processing (for example, at least one of reception, demapping, demodulation, decoding, receiving beam determination, etc.), the sending processing (for example, at least one of sending, mapping, modulation, coding, sending beam determination, etc.), etc. based on the TCI state corresponding to the TCI state ID associated with the signal / channel.

[0062] In addition, in the present disclosure, “A / B” may also mean “at least one of A and B”.

[0063] like Figure 2A As shown, for P-CSI-RS, the associated TCI state can also be set through RRC. In addition, for P-CSI-RS, SP-CSI-RS and A-CSI-RS, the associated TCI state can also be determined based on high-layer signaling, physical layer signaling or a combination thereof.

[0064] (Beam Management)

[0065] In Rel.15NR, the method of beam management (BM) has been studied. In this beam management, beam selection is studied based on the L1-RSRP reported by the UE. Changing (switching) the beam of a certain signal / channel can also be equivalent to changing at least one of the TCI state and QCL assumption of the signal / channel.

[0066] The UE may also use an uplink control channel (Physical Uplink Control Channel (PUCCH)) or an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) to report (send) measurement results for beam management. The measurement results may also be, for example, CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, etc.

[0067] The measurement results (e.g., CSI) reported for beam management may also be referred to as beam measurement, beam measurement report, beam report, beam report CSI, etc.

[0068] The CSI measurement for beam reporting may also include interference measurement. The UE may also use the resources used for CSI measurement to measure channel quality, interference, etc., and derive beam reporting.

[0069] The beam report may also include the results of at least one of the channel quality measurement and the interference measurement. The channel quality measurement result may also include, for example, L1-RSRP. The interference measurement result may also include L1-SINR, L1-SNR, L1-RSRQ, other interference-related indicators (e.g., any indicator other than L1-RSRP), etc.

[0070] Reference Figure 4 The CSI report setting information for NR beam management taking into account the current situation is explained. Figure 4 is an extract of the RRC information element "CSI-ReportConfig". Figure 4 Excerpted from Figure 1A Other parts of the same CSI report configuration information (CSI-ReportConfig).

[0071] The CSI report configuration information may also include information of a parameter reported by one report instance (e.g., one CSI), namely, "report quantity" (which may also be represented by the RRC parameter "reportQuantity"). 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.

[0072] A UE in which the higher-level parameters included in the CSI report setting information (for example, the RRC parameter "groupBasedBeamReporting" related to group-based beam reporting) are set to invalid (disabled) can also include, for each report setting (report setting), different beam measurement resource IDs (for example, SSBRI, CRI) and measurement results corresponding to each ID (for example, L1-RSRP) in the beam report (a reporting instance).

[0073] A UE with groupBasedBeamReporting enabled may also include two different beam measurement resource IDs and two measurement results (e.g., L1-RSRP) corresponding to each ID in a beam report for each report setting. In other words, a UE with groupBasedBeamReporting 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 resources, SSB resources) can be received simultaneously by the UE using either one spatial domain reception filter or multiple simultaneous spatial domain reception filters.

[0074] In addition, Figure 2A The NZP CSI-RS resource set information shown in the figure may also include information related to repetition in the resources within the resource set. The information related to the repetition may also indicate, for example, 'ON' or 'OFF'. In addition, 'enabled' may also be indicated as 'enabled or valid', and 'disabled' may also be indicated as 'disabled or invalid'.

[0075] For example, for a resource set that is repeatedly set to 'enabled', the UE may also assume that the resources in the resource set are transmitted using the same downlink spatial domain transmission filter. In this case, the UE may also assume that the resources in the resource set are transmitted using the same beam (e.g., from the same base station using the same beam).

[0076] For a resource set that is repeatedly set to 'deactivate', the UE may also perform the following control, that is, it cannot be assumed (or may not be assumed) that the resources in the resource set are transmitted using the same downlink spatial domain transmit filter. In this case, the UE may also assume that the resources in the resource set cannot be transmitted using the same beam (and are transmitted using different beams). That is, for a resource set that is repeatedly set to 'deactivate', the UE may also assume that the base station is performing beam scanning.

[0077] In Rel.15NR, cri-RSRP and ssb-Index-RSRP in the reporting amount are associated with beam management. A UE for which cri-RSRP is set as the reporting amount reports CRI and the L1-RSRP corresponding to the CRI. A UE for which ssb-Index-RSRP is set as the reporting amount reports SSBRI and the L1-RSRP corresponding to the SSBRI.

[0078] Figure 5 This is a diagram showing an example of a CSI report in Rel. 15 NR, showing the mapping order of CSI fields included in one CSI report (nth CSI report #n) for CSI / RSRP or SSBRI / RSRP reporting, which is specified in Table 6.3.1.1.2-8 of 3GPP TS 38.212 V15.7.0.

[0079] 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 indicating the number of reference signal resources to be reported (for example, RRC parameter "nrofReportedRS").

[0080] For L1-RSRP reporting, when nrofReportedRS is set to 1 (value 'n1'), a field of a specific number of bits (eg, m bits) indicating the maximum measured value of L1-RSRP, RSRP#1, is included in the CSI report. In Rel.15NR, m=7.

[0081] For L1-RSRP reporting, when nrofReportedRS is set to be greater than 1 or groupBasedBeamReporting is set to be valid, the UE uses differential L1-RSRP based reporting. Specifically, the UE reports the L1-RSRP#1 representing the maximum measured value and the RSRP#2 for the kth (in Figure 5In the same CSI report (report instance), the differential RSRP#k calculated by referring to the largest measured value (e.g., as a difference from the measured value) is included in the same CSI report (report instance). Here, the differential RSRP#k may also be a field with fewer bits (e.g., n bits) than the above-specified number. In Rel.15NR, n=4.

[0082] In addition, when groupBasedBeamReporting is set to be valid, the UE includes RSRP#1 and differential RSRP#2 in the same CSI report.

[0083] Figure 5 CRI / SSBRI#k is a field showing CRI / SSBRI corresponding to RSRP#k or differential RSRP#k (included when RSRP#k or differential RSRP#k is reported).

[0084] In addition, in NRs after Rel.16, nrofReportedRS may be a value greater than or equal to 4. A CSI report may include more than 4 groups of CRI / SSBRI and RSRP. The above m, n, etc. are not limited to 7 and 4, respectively.

[0085] In addition, in NR after Rel.16, L1-SINR reporting can also be performed. In the L1-SINR report, the content after replacing RSRP in the above-mentioned L1-RSRP report with SINR can also be applied. In addition, in this case, the setting / parameter for SINR can also be different from the setting / parameter for RSRP, for example, the above-mentioned nrofReportedRS can also be replaced by nrofReportedRSForSINR, which indicates the number of reference signal resources of the SINR reporting object.

[0086] (Beam report based on extended group)

[0087] For future wireless communication systems (e.g., Rel.17NR), research is underway on extensions of beam management associations 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., also referred to as beam reports suitable for multiple TRPs, beam reports based on extended groups).

[0088] The above-mentioned groupBasedBeamReporting can report two groups through one report, so it is suitable for situations where multiple TRPs are sent, multiple panels are received, etc. 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.

[0089] As described so far, in Rel.15 and 16, a UE in which group-based beam reporting is set to be effective can only report two different CRI / SSBRIs (which can also be replaced by beam indices) for each reporting setting. Therefore, for Rel.17, research is being conducted to make the number of groups that can be reported through group-based beam reporting greater than 2. In addition, for more flexible reporting, a structure that can report more than two CRI / SSBRIs within a group is also being studied.

[0090] A group-based beam report using such a beam report (a beam report in which the number of groups associated with the report is greater than 2 or a beam report in which more than 2 CRI / SSBRIs are reported within the group associated with the report) can also be called a multi-group-based beam report, an extended group-based beam report, a group-based beam report of Rel.17, etc. (hereinafter referred to as a multi-group-based beam report).

[0091] For situations where multi-group based beam reporting is used, the following two modes are considered:

[0092] Mode 1: The UE can simultaneously receive multiple beams belonging to different groups.

[0093] Mode 2: The UE can simultaneously receive multiple beams belonging to the same group.

[0094] Below, with Figure 6 Taking the environment of as an example, the situation of using multi-group based beam reporting is explained. Figure 6 This is a diagram showing an example of a beam utilization environment assumed based on a plurality of sets of beam reports.

[0095] exist Figure 6 In the example, the UE measures the resources of the reference signal (CSI-RS) sent from two TRPs (TRP#1, #2). The UE has two panels (panel #1, #2), each of which can form a different beam (B1-1, B1-2, B2-1, B2-2).

[0096] TRP#1 uses resources of CRI#1-1 to CRI#1-4 corresponding to different beams to transmit CSI-RS. TRP#2 uses resources of CRI#2-1 to CRI#2-4 corresponding to different beams to transmit CSI-RS. In the present disclosure, beams of CRI#1-1 to CRI#1-4 may also be replaced with transmit beams #1-#4, respectively. In the present disclosure, beams of CRI#2-1 to CRI#2-4 may also be replaced with transmit beams #5-#8, respectively.

[0097] In addition, each TRP and UE can scan each beam (using different time / frequency) to transmit and receive, or use several beams to transmit and receive at the same time.

[0098] in addition, Figure 6 This is an example. For example, TRP#1 and #2 can also be replaced by two panels of a certain TRP (panel #1, #2).

[0099] RSRP / SINR corresponding to CRI#1-1 to CRI#1-4 may also be expressed as RSRP / SINR#1-1 to RSRP / SINR#1-4, respectively. RSRP / SINR corresponding to CRI#2-1 to CRI#2-4 may also be expressed as RSRP / SINR#2-1 to RSRP / SINR#2-4, respectively.

[0100] In addition, hereinafter, a resource corresponding to a certain CRI may also be simply expressed as a certain CRI (for example, CRI#1-1 may mean both CRI#1-1 and a resource corresponding to CRI#1-1).

[0101] In the present disclosure, it is assumed that one resource setting (also referred to as reference signal (RS) setting) corresponds to (is associated with) one TRP for explanation. The resource setting corresponding to one TRP may also correspond to, for example, at least one of CSI resource setting information ("CSI-ResourceConfig"), a CSI-RS resource set list, an NZP CSI-RS resource set, and a CSI-SSB resource set.

[0102] For example, for Figure 6, RRC settings may also be performed as follows. CSI report setting #0 configured for the UE includes CSI resource settings #0 and #1. CSI resource setting #0 is associated with resource set #0 (CSI-RS resource set #0), in which four CSI-RS resources corresponding to CRI #1-1 to #1-4 are configured. CSI resource setting #1 is associated with resource set #1 (CSI-RS resource set #1), in which four CSI-RS resources corresponding to CRI #2-1 to #2-4 are configured.

[0103] In addition, the contents of the present disclosure can be applied even when one resource setting corresponds to (is associated with) multiple TRPs.

[0104] Figure 7 FIG. 1 is a diagram showing an example of a CSI report in mode 1 based on multiple groups of beam reports. Figure 7 In the example shown, the UE selects two beams from TRP#1 to be measured using panel#1, and selects two beams from TRP#2 to be measured using panel#2. In addition, in this example, the UE assumes that panel#1 is associated with group#1 and panel#2 is associated with group#2.

[0105] The CRI measurement results and the numbers of the elements in the structure of the CSI report in the drawings of the present disclosure are merely examples and are not limited to these numbers.

[0106] In this case, for group #1 (panel #1), the UE determines CRI #1-1 and CRI #1-3 as the reporting objects among the CRIs of CSI resource setting #0 associated with TRP #1. In addition, for group #2 (panel #2), the UE determines CRI #2-2 and CRI #2-3 as the reporting objects among the CRIs of CSI resource setting #1 associated with TRP #2.

[0107] Figure 8 FIG. 1 is a diagram showing an example of a CSI report in mode 2 based on multiple groups of beam reports. Figure 8 In the example, the UE selects the beam of TRP from one party measured using panel #1 and the beam of TRP from the other party measured using panel #2 for each group.

[0108] In this case, for group #1, the UE selects CRI#1-1 from the CRI corresponding to TRP#1 in reception panel #1 as a reporting object, and selects CRI#2-2 from TRP#2 different from TRP#1 in reception panel #2 as a reporting object. In addition, for group #2, the UE selects CRI#2-3 from the CRI corresponding to TRP#2 in reception panel #1 as a reporting object, and selects CRI#1-2 from TRP#1 different from TRP#2 in reception panel #2 as a reporting object.

[0109] Regarding the above-mentioned Mode 1 and Mode 2, either one of them may be supported by the UE, or both of them may be supported.

[0110] However, in the above-mentioned multi-group based beam reporting, there is insufficient research on how to construct CSI reports, specifically, how to determine the reporting object (beam / beam pair / panel) in each group. If this is not made clear, there is a concern that communication throughput will be reduced.

[0111] Specifically, for example, there is insufficient research on how to determine (select) / order the panels for measurement for each RS / RS set setting / TRP. As specific examples that should be studied, consider the following:

[0112] ·How to determine the TRP / panel corresponding to a group in Mode 1,

[0113] Regarding whether a panel can be used to report measurement results for other TRPs that do not correspond to a group in Mode 1,

[0114] Regarding the sorting of multiple groups in mode 1,

[0115] In mode 2, the method for determining whether to include the measurement results of a certain TRP / panel in a certain group,

[0116] How to determine whether to include the measurement results of a usage panel corresponding to a certain TRP and other usage panels corresponding to other TRPs in a certain group in Mode 2,

[0117] How to decide whether to include the measurement results of a usage panel corresponding to a certain TRP and other usage panels corresponding to other TRPs in a certain group and whether to report them in Mode 2,

[0118] Regarding the sorting of multiple groups in mode 2.

[0119] In addition, the rules for deciding / ordering the beams in each group are not well studied. Figure 7In the CSI report of mode 1 as shown in FIG. 1 , whether to arrange CRI#1-1 in group #1 before CRI#1-3 and how to decide the arrangement are not sufficiently studied. Figure 8 In the CSI report of mode 2 as shown, whether or not to arrange CRI#1-1 in group #1 before CRI#2-2 and how to decide are not sufficiently studied.

[0120] In addition, in order to receive multiple beams simultaneously, the UE may also select a pair of CRIs (also referred to as a beam pair). For the beam pair, the UE may also consider a combination of any CRIs in each group. In addition, for the beam pair, the UE may also consider a combination of specific CRIs in each group.

[0121] Therefore, the inventors of the present invention have conceived of an appropriate CSI report construction method based on multiple groups of beam reports.

[0122] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0123] In addition, in the present disclosure, the panel (receiving panel), uplink (UL) transmitting entity, TRP, spatial relationship, control resource set (COntrol REsource SET (CORESET)), PDSCH, codeword, base station, antenna port (for example, demodulation reference signal (DeModulation Reference Signal (DMRS)) port), antenna port group (for example, DMRS port group), group (for example, code division multiplexing (Code Division Multiplexing (CDM)) group, reference signal group, CORESET group, CORESET pool), reference signal setting, reference signal set setting, etc. can also be replaced with each other.

[0124] Panel Identifier (ID) and Panel can be interchanged. TRP ID and TRP can be interchanged. In addition, Index and ID can be interchanged.

[0125] In addition, in the present disclosure, the term "group" may be interchangeably used with "set", "cluster", "panel", "group associated with (reported) beams", and the like.

[0126] In the following embodiments, the beam index may be replaced by, for example, CRI / SSBRI. In addition, RSRP / SINR may be replaced by any beam-associated measurement result.

[0127] In addition, the name associated with the CSI-RS may also be replaced with the corresponding name associated with the SSB. For example, the CSI-RS resource may also be replaced with the SSB resource. In other words, the CSI-RS may also be replaced with CSI-RS / SSB, and the CRI may also be replaced with CRI / SSBRI.

[0128] In addition, in the present disclosure, the "receiving panel" may also correspond to at least one of an RS group, a TRP index, a CORESET pool index, an RS group set for group-based beam reporting, a TCI state (or TCI) group, a QCL assumption (or QCL) group, and a beam group.

[0129] In addition, in the present disclosure, "the same position" can also be replaced by "the same i-th one", "corresponding to the same TRP", etc.

[0130] (Wireless Communication Method)

[0131] <First embodiment>

[0132] In the first embodiment, the association between TRP and panel and the order of groups in the environment of mode 1 based on multiple groups of beam reports are described. Figure 6 The present embodiment is described in the environment of the structure described in . In addition, the present embodiment is not limited to the mode 1 based on the beam report of multiple groups, and can be appropriately applied to any environment using the beam report based on multiple groups.

[0133] In addition, in the present disclosure, reported beams can be referred to as reporting RS, or can mean the beam used in the transmission from a certain TRP of the CSI-RS / SSB of the reporting (measurement) object in a certain group, or can mean the CSI-RS / SSB.

[0134] In the following first embodiment, in an environment of mode 1 based on multiple groups of beam reports, it is assumed that the reporting beam contained in a certain group is sent from a certain TRP and received (measured) by a certain UE panel, and the reporting beam contained in another group is sent from a different TRP and received (measured) by a different UE panel.

[0135] 《Implementation Method 1-1》

[0136] The UE may determine the panel to be used for measurement / reporting for each RS setting (TRP). The determination method is roughly divided into the following three methods (Implementation 1-1-1, 1-1-2, 1-1-3).

[0137] In implementation 1-1-1, the decision of the panel used for performing measurements / reports corresponding to a certain TRP may also depend on the implementation of the UE. For example, the UE may also decide to use panel #i (i is an integer) in the measurement / report for TRP #i.

[0138] In implementation 1-1-2, the UE may determine the panel to be used for performing measurements / reports corresponding to a certain TRP based on a specific transmission beam (e.g., the optimal transmission beam) among the transmission beams of each TRP measured for each panel.

[0139] For example, when the measurement result for TRP#Y in panel #X is the best among the measurement results for RS of each TRP in each panel, the UE may also determine that the panel used for measurement / reporting corresponding to TRP#Y is panel #X. Furthermore, the UE may also repeatedly perform the following process until the panel for all TRPs is determined, wherein the process is a process of selecting the best measurement result from the measurement results obtained by excluding the measurement results related to at least one of panel #X and TRP#Y from the measurement results for RS of each TRP in each panel and determining the panel used for measurement / reporting corresponding to one of the remaining TRPs.

[0140] Fig. 9 1 is a diagram showing an example of measurement results corresponding to the best RS in each TRP and a plurality of receiving panels. Fig. 9 In the example, for the best RS of TRP#1, the measurement result in panel#1 is -70, and the measurement result in panel#2 is -57. For the best RS of TRP#2, the measurement result in panel#1 is -58, and the measurement result in panel#2 is -55. Fig. 9 When the measurement results are as described in the example, you can first select panel #2 as the receiving panel for measuring / reporting the RS from TRP #2, and then select the remaining panel (panel #1) as the receiving panel for measuring / reporting the RS from TRP #1.

[0141] In implementation 1-1-3, the UE may also determine the panel corresponding to the TRP based on the average (or total) of all measurement results for the combination of a pair of TRPs and panels (also referred to as a TRP-panel pair). For example, the first combination of TRP-panel pairs may also be a combination of {TRP#1, panel#1} and {TRP#2, panel#2}. The second combination of TRP-panel pairs may also be a combination of {TRP#2, panel#1} and {TRP#1, panel#2}.

[0142] For example, for each combination, the UE may calculate the average of the measurement results of all TRP-panel pairs, and determine the panel corresponding to the TRP from the combination of TRP-panel pairs with the best average measurement results.

[0143] Get it at UE Fig. 9 When the measurement results are shown in the example, the combination of the measurement results of the TRP and panel pairs becomes (-70, -55) corresponding to the first combination and (-58, -57) corresponding to the second combination. At this time, the best average of the measurement results of all TRP-panel pairs in the combination is (-58, -57), so the UE determines the panel corresponding to TRP#1 as panel#2, and the panel corresponding to TRP#2 as panel#1.

[0144] The UE may also determine the order of multiple groups in a CSI report based on at least one of the TRP ID (RS setting ID), the panel ID, the best (or the Xth best (e.g., X=2)) measurement value in each group, and the average (total) of the measurement values ​​in each group. For example, the UE may also make the panel with a smaller ID group #1 and the panel with a larger ID group #2 to generate a CSI report.

[0145] In addition, regarding which rule is used to associate the TRP with the panel (for example, which one of the implementation modes 1-1-1, 1-1-2, and 1-1-3 is followed), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling. In addition, regarding which rule is used to sort the groups (for example, whether it is based on the TRP ID, etc.), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling.

[0146] [Variation of Implementation 1-1]

[0147] The UE may also prioritize a specific TRP (e.g., TRP#1, a TRP with the minimum (or maximum) TRP index) and determine the CRI (beam) corresponding to the specific TRP. The UE may also determine that the specific TRP must belong to a specific group (e.g., group #1).

[0148] For example, the UE may first determine the CRI corresponding to the TRP corresponding to the minimum (or maximum) TRP index (CORESET pool index). Next, the UE may also determine the CRI corresponding to other TRPs.

[0149] When deciding the CRI corresponding to other TRPs, the UE may also consider whether it can simultaneously receive the beam pairs corresponding to each TRP. The "beam pairs corresponding to each TRP" here may also mean the i-th (i is an integer) beam (CRI) pair of each group in the report.

[0150] by Figure 7 The above operation is explained as an example. The UE first determines the beam corresponding to TRP#1 (here CRI#1-1 or CRI#1-3) based on the maximum L1-RSRP / L1-SINR (here RSRP / SINR#1-1 or RSRP / SINR#1-3). Next, the UE determines the beam corresponding to TRP#2 (here CRI#2-2 or CRI#2-3) based on the maximum L1-RSRP / L1-SINR (here RSRP / SINR#2-2 or RSRP / SINR#2-3). When determining the beam corresponding to TRP#2, the UE considers whether it can simultaneously receive the beam pairs corresponding to each TRP (in this case, CRI#1-1 and CRI#2-2, or CRI#1-3 and CRI#2-3), and controls to select a beam that can be received simultaneously with the beam of TRP#1. For example, the UE may determine the initial CRI of group #2 from CRIs (ie, CRI #2-1 to #2-4) that can be received simultaneously with the initial CRI (CRI #1-1) of group #1.

[0151] In addition, in the present disclosure, the TRP index (CORESET pool index) may also correspond to at least one of an RS group, a receiving panel, an RS group set for group-based beam reporting, a TCI state (or TCI) group, a QCL assumption (or QCL) group, and a beam group.

[0152] 《Implementation Method 1-2》

[0153] The UE may not determine the panel for measurement / reporting. The UE may also implicitly / explicitly report the panel ID in order to report the measurement results corresponding to the combination of multiple (e.g., all) TRPs and panels. The following describes the case where the number of groups is 4, but is not limited to this.

[0154] In the case where the UE implicitly reports the panel ID, the ordering of multiple groups may also be based on at least one of the panel ID and the TRP ID. For example, in the case where the UE implicitly reports the panel ID, each specific number (for example, two) of group IDs may also be made to correspond to each specific number (for example, two) of panel IDs in ascending order. If the number of TRPs is set to M (for example, 2) in advance, the number of panels is set to N (for example, 2), the TRP ID is set to i (i=1, ..., M), and the panel ID is set to j (j=1, ..., N), then group #{i+N(j-1)} may also correspond to panel #j. For example, it may also be that groups #1 and #2 correspond to panel #1, and groups #3 and #4 correspond to panel #2. In addition, for example, in the case where the UE implicitly reports the panel ID, the panel IDs corresponding to the TRP IDs may also be sorted in ascending order starting from the smallest TRP ID. For example, group #{M(i-1)+j} may also correspond to panel #j.

[0155] In other words, the group may also be associated with at least one of the panel ID and the TRP ID (eg, based on the group ID).

[0156] In addition, in the present disclosure, “small” may be replaced by “large”, and “ascending order” may be replaced by “descending order”.

[0157] On the other hand, when the UE explicitly reports the panel ID, the panel ID of each group may also be reported. The panel ID may also be an RS ID, an RS set ID, or a specific ID introduced after Rel.17. The UE may also include the panel ID in the CSI report and report it in a manner that knows the correspondence with the CRI (or the measurement result of the CRI) or the group. The UE may also send the panel ID associated with a CSI report (or a group of the CSI report) to the network differently from the CSI report (for example, using high-layer signaling, physical layer signaling, or a specific channel / signal).

[0158] At this time, the UE can also sort multiple groups for a CSI report based on at least one of TRP ID, RS setting ID, panel ID, the best (or Xth best (for example, X=2)) measurement value in each group, and the average (total) of the measurement values ​​in each group.

[0159] In addition, for the specific ID introduced after Rel. 17, the UE may be able to simultaneously receive RSs reported (or transmitted) from multiple groups with different specific IDs. In addition, the UE may not be able to simultaneously receive RSs reported by groups with the same specific ID.

[0160] Fig. 10A as well as Fig. 10BThis is a diagram showing an example of mode 1 in which beam reports based on multiple groups are applied according to implementation example 1-2. Fig. 10A as well as Fig. 10B An example of the ordering of multiple groups when the UE implicitly reports the panel ID is shown.

[0161] Fig. 10B An example of a CSI report reported by a UE when the number of groups is 4 is shown. Fig. 10B In the example, the UE determines the best and second CRIs (CRI#1-1 and CRI#1-3) from TRP#1 measured by panel #1, and the measurement results corresponding to the best and second CRIs (RSRP / SINR#1-1 and RSRP / SINR#1-3) as group #1. In addition, the UE determines the best and second CRIs (CRI#2-3 and CRI#2-2) from TRP#1 measured by panel #1, and the measurement results corresponding to the best and second CRIs (RSRP / SINR#2-3 and RSRP / SINR#2-2) as group #2. In addition, the UE determines the best and second CRIs (CRI#1-2 and CRI#1-4) from TRP#1 measured by panel #2, and the measurement results corresponding to the best and second CRIs (RSRP / SINR#1-2 and RSRP / SINR#1-4) as group #3. In addition, the UE determines the best and second CRIs (CRI#2-2 and CRI#2-3) from TRP#2 measured by panel #2, and the measurement results corresponding to the best and second CRIs (RSRP / SINR#2-2 and RSRP / SINR#2-3) as group #4.

[0162] In addition, in Fig. 10B In the case where multiple groups are used for all TRP-panel pairs and reported through one CSI report, the UE may not assume that it can necessarily receive multiple beams belonging to different groups at the same time (it may also be assumed that if the multiple beams belong to different groups and are received through different panels, they can be received at the same time). The CSI report may not correspond to Mode 1.

[0163] In addition, whether panel specific measurements / reports, such as those described in Implementation 1-2, such as measurements / reports of multiple panels included in a CSI report, are used can be pre-defined in the specification or set to the UE through high-layer signaling.

[0164] 《Implementation Method 1-3》

[0165] The UE may select (determine) / sort the beam indexes included in each group based on the measurement results of the reception quality of each beam (for example, L1-RSRP / L1-SINR).

[0166] For example, the UE may select (determine) / sort the beam indexes included in each group based on the maximum L1-RSRP / L1-SINR measurement result among the L1-RSRP / L1-SINR measurement results of each beam.

[0167] According to the above first embodiment, in the environment of mode 1 based on multiple groups of beam reports, the association between TRP and panels and the sorting of groups can be appropriately performed, thereby further improving the flexibility of scheduling based on the base station.

[0168] <Second embodiment>

[0169] In the second embodiment, the association between TRP and panel and the order of groups in the environment of mode 2 based on multiple groups of beam reports are described. In addition, this embodiment is not limited to mode 2 based on multiple groups of beam reports, and can be appropriately applied to any environment using multiple groups of beam reports.

[0170] In the following second embodiment, in an environment of Mode 2 based on multiple groups of beam reports, it is assumed that the reporting beams included in a certain group are sent from different multiple TRPs and received (measured) by different multiple UE panels.

[0171] 《Implementation Method 2-1》

[0172] In implementation mode 2-1, regarding the panel determination for each group included in a certain CSI report, the panel selected for a certain TRP may be different in multiple different groups (implementation mode 2-1-1).

[0173] For example, for group #1, panel #1 is used for measurements / reports related to TRP #1, and panel #2 is used for measurements / reports related to TRP #2. Alternatively, for group #2, panel #2 may be used for measurements / reports related to TRP #1, and panel #1 may be used for measurements / reports related to TRP #2.

[0174] Fig.11 FIG. 2 is a diagram showing an example of a CSI report of mode 2 based on a plurality of beam reports according to embodiment 2-1. Fig.11In the example shown, when panel #1 is used for measurement / reporting of CRI#1-1 associated with TRP#1 contained in group #1, and panel #2 is used for measurement / reporting of CRI#2-2 associated with TRP#2, panel #2 is used for measurement / reporting of CRI#1-2 associated with TRP#1 contained in group #2, and panel #1 is used for measurement / reporting of CRI#2-3 associated with TRP#2.

[0175] In implementation 2-1-1, the UE may determine the panel corresponding to each TRP for each group in accordance with the above implementation 1-1.

[0176] At this time, regarding the CSI report for L1-SINR, the condition for measuring the reception quality (e.g., L1-SINR) may also be added to the decision of the panel for measurement / reporting in Implementation 1-1. For example, when the UE obtains the measurement results / average of the measurement results / total of the measurement results of multiple (e.g., two) beams included in a certain group, the UE may also consider the inter-beam interference between the multiple reporting RSs.

[0177] In addition, regarding the panel determination for each group included in a certain CSI report, the panel selected for a certain TRP in multiple different groups may be the same (common) (Implementation 2-1-2).

[0178] For example, for group #1, panel #1 is used for measurements / reports related to TRP#1, and panel #2 is used for measurements / reports related to TRP#2. For group #2, panel #1 may be used for measurements / reports related to TRP#1, and panel #2 may be used for measurements / reports related to TRP#2.

[0179] In implementation 2-1-2, the UE may also follow the above implementation 1-1 to determine the panel corresponding to each TRP.

[0180] At this time, regarding the CSI report for L1-SINR, the condition for measuring the reception quality (e.g., L1-SINR) may also be added to the decision of the panel for measurement / reporting in Implementation 1-1. For example, when the UE obtains the measurement results / average of the measurement results / total of the measurement results of multiple (e.g., two) beams included in a certain group, the UE may also consider the inter-beam interference between the multiple reporting RSs.

[0181] Regarding the ordering of multiple groups in a CSI report, the UE may also determine the order based on at least one of the TRP ID (RS setting ID), the panel ID, the best (or Xth best (for example, X=2)) measurement value in each group, and the average (total) of the measurement values ​​in each group.

[0182] In addition, regarding which rule is used to associate the TRP with the panel (for example, which one of the implementation modes 2-1-1 and 2-1-2 is followed), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling. In addition, regarding which rule is used to sort the groups (for example, whether it is based on the TRP ID, etc.), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling.

[0183] 《Implementation Method 2-2》

[0184] Regarding the ordering of beams in each group, the UE may also apply the same ordering rules to multiple different groups.

[0185] For example, the UE may also sort the beams in each group based on the measured values ​​of L1-RSRP / L1-SINR associated with multiple (e.g., two) beams included in a group. In addition, for example, the UE may also sort the beams in each group based on the panel ID included in a group. In other words, when the first CRI in a group is associated with panel ID=1 and the second CRI is associated with panel ID=2, the CSI report may also be made such that the first CRI in other groups is associated with panel ID=1 and the second CRI is associated with panel ID=2. In addition, for example, the UE may also sort the beams in each group based on the TRPID included in a group.

[0186] In addition, the order of beams included in a certain group can be defined in advance in the specification or set from the NW through high-layer signaling.

[0187] <Third Embodiment>

[0188] The above-mentioned Embodiment 1-1 and Embodiment 1-2 can also be applied in an environment where group-based beam reporting is not applied (an environment where non-group based beam reporting is applied).

[0189] In an environment where non-group based beam reporting is used, the high-level parameters (e.g., CSI-ReportConfig) used for CSI report configuration may also be associated with one TRP. In other words, the high-level parameters used for CSI report configuration may also include channel measurement resources corresponding to only one TRP. At this time, a CSI report for a certain TRP may also be associated with other CSI reports corresponding to other TRPs. In this case, the beam index reported by each CSI report may also be determined based on whether it can be received simultaneously by different multiple panels of the UE.

[0190] In such a case, for example, in order to determine the panel used for measurement / reporting of each CSI report, the UE may also apply at least one of the rules for associating TRP with the panel and the rules for sorting multiple groups described in Implementation 1-1. In this case, the "group" in the description of Implementation 1-1 may also be replaced with "CSI report" (in other words, multiple groups within one CSI report may also be equivalent to multiple CSI reports). Specifically, for example, the UE may also decide to use panel #1 in CSI report #1 and panel #2 in CSI report #2.

[0191] In addition, regarding which rule is used to associate the TRP with the panel (for example, which one of the implementation modes 1-1-1, 1-1-2, and 1-1-3 is followed), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling. In addition, regarding which rule is used to sort the groups (for example, whether it is based on the TRP ID, etc.), it can be defined in the specification or set from the NW (network, such as a base station) to the UE through high-layer signaling.

[0192] In addition, in such a situation, for example, in order to determine the panel used in the measurement / reporting of each CSI report, the UE may also apply at least one of the rules for associating the TRP with the panel and the rules for sorting multiple groups described in Implementation 2-1. In this case, the "group" in the description of Implementation 2-1 may also be replaced by "CSI report" (in other words, multiple groups within a CSI report may also be equivalent to multiple CSI reports). For example, for one CSI report, the UE may also use each panel in the measurement of channel measurement resources for one TRP, and may also use each panel in the reporting of multiple measurement results. Specifically, for example, the UE may also report the L1-RSRP / L1-SINR measured by panel #1 and panel #2 for CSI report #1 of TRP#1, and report the L1-RSRP / L1-SINR measured by panel #1 and panel #2 for CSI report #1 of TRP#2.

[0193] At this time, the UE may also consider the panel ID reported explicitly / a specific ID introduced after Rel. 17. In addition, at this time, the UE may also consider the panel ID reported implicitly.

[0194] In addition, for the specific ID introduced after Rel. 17, the UE may be able to simultaneously receive RSs reported (or transmitted) from multiple groups with different specific IDs. In addition, the UE may not be able to simultaneously receive RSs reported by groups with the same specific ID.

[0195] Whether panel-specific measurements / reports are used, such as measurements / reports based on multiple panels included in one CSI report, can be pre-defined in the specification or set to the UE through higher-layer signaling.

[0196] In addition, in such a case, the association between multiple (e.g., two) CSI reports may not be set. In this case, the NW can obtain measurement results based on multiple (e.g., two) panels set for each TRP / RS, and the NW can perform appropriate scheduling that takes into account both the sending of the TRP and the receiving of the UE.

[0197] <Other>

[0198] In the present disclosure, the decision (selection) method of whether the UE supports / applies the beam / panel based on the average / aggregate measurement results of multiple beams in each group can be set based on the report of UE capability information or through high-level signaling (e.g., RRC signaling).

[0199] In addition, in the present disclosure, whether to support / apply reporting of L1-RSRP / L1-SINR measurements using different multiple UE panels in one CSI report in group-based beam reporting / non-group-based beam reporting can be set based on reporting of UE capability information or through high-layer signaling (e.g., RRC signaling). In this case, one CSI report may also include information related to the number of panels used for panel-specific measurements / reports.

[0200] In addition, in the present disclosure, whether to support / apply inter-beam interference between multiple (e.g., two) channel measurement resources for multiple reporting beams in a group for L1-SINR (e.g., in a case like mode 2) can be set based on the report of UE capability information or through higher-layer signaling (e.g., RRC signaling).

[0201] (Wireless Communication System)

[0202] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0203] Fig.121 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0204] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0205] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (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.

[0206] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0207] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in 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 and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0208] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0209] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the 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 be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0210] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0211] Multiple base stations (e.g., RRH) 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, 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 a relay station (relay) may also be referred to as an IAB node.

[0212] 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 also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0213] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0214] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may 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. may be used.

[0215] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0216] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0217] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0218] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0219] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0220] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0221] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0222] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may 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" and the like in the present disclosure may also be interchangeable.

[0223] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0224] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0225] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0226] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0227] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0228] (Base Station)

[0229] Fig.13 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0230] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0231] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0232] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0233] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring 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 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0234] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0235] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0236] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0237] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0238] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0239] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0240] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0241] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0242] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0243] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0244] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0245] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0246] The sending and receiving unit 120 may also send a signal (which may also be a reference signal (e.g., CSI-RS, SSB)) to the terminal in a plurality of resources. The control unit 110 may also control the reception of the CSI report, i.e., a channel state information report that includes a plurality of resource indicators corresponding to at least two of the plurality of resources and a measurement result corresponding to each of the plurality of resource indicators, by the terminal for each group, based on whether the signal for the plurality of resource indicators corresponding to the same group and the measurement result for each panel can be received simultaneously, to determine which panel the resource indicator is included in and at which position of the CSI report and is sent (first to third embodiments).

[0247] (User Terminal)

[0248] Fig.14 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0249] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0250] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0251] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and 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 and reception unit 220.

[0252] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0253] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0254] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0255] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0256] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0257] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0258] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0259] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0260] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0261] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0262] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0263] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure 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.

[0264] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0265] The control unit 210 may also determine, for each group, for a channel state information report (i.e., CSI report) including multiple resource indicators and measurement results corresponding to each of the multiple resource indicators, based on whether signals (which may also be reference signals (e.g., CSI-RS, SSB)) for multiple resource indicators corresponding to the same group can be received simultaneously and the measurement results of each panel, to include the resource indicator for which panel in which position of the CSI report. The transmitting and receiving unit 220 may also transmit the CSI report (first to third embodiments).

[0266] The control unit 210 may also control to report information (eg, panel ID) related to the panel corresponding to the group including the resource indicator when the signals cannot be received simultaneously (Implementation 1-2).

[0267] When the signals can be received simultaneously, the control unit 210 may determine that the resource indicators at the same position in different groups included in the CSI report correspond to different panels (implementation mode 2-1).

[0268] When the signals can be received simultaneously, the control unit 210 may determine that the resource indicators at the same position in different groups included in the CSI report correspond to the same panel (Implementation 2-1).

[0269] (Hardware Structure)

[0270] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0271] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending 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.

[0272] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.15 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0273] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0274] For example, only one processor 1001 is shown, 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 in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0275] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0276] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0277] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0278] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or 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 executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0279] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, 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, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0280] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (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), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit and the receiving unit.

[0281] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0282] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0283] 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), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0284] (Variation Example)

[0285] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0286] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless 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 be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0287] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0288] A time slot may also be composed of one or more symbols (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 may also be a time unit based on a parameter set.

[0289] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0290] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0291] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0292] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0293] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0294] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0295] A TTI having a time length of 1 ms may 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 a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0296] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0297] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0298] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0299] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0300] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0301] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0302] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0303] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0304] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only 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 number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0305] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0306] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0307] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0308] Furthermore, 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.

[0309] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0310] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-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.

[0311] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (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, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0312] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0313] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0314] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0315] In addition, software, instructions, information, etc. may 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 technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0316] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0317] In the present 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", and "panel" can be used interchangeably.

[0318] In the present 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", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0319] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0320] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0321] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless 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.

[0322] At least one of the base station and the mobile station may 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 may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0323] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0324] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0325] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a 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)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0326] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0327] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (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, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0328] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0329] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0330] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0331] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0332] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0333] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0334] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0335] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0336] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0337] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0338] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0339] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A control unit, based on whether a channel measurement resource (CMR) corresponding to each of a plurality of resource indicators in the same group and a measurement result of each of a plurality of CMR sets can be simultaneously received, determines a mapping order of resource indicators corresponding to each of the plurality of CMR sets in a group-based beam report; and A sending unit sends the group-based beam report.

2. The terminal according to claim 1, wherein: The control unit applies a mapping order of a plurality of resource indicators in one of the plurality of groups to other groups of the plurality of groups.

3. A wireless communication method of a terminal, comprising: A step of determining a mapping order of resource indicators corresponding to each of the plurality of CMR sets in a group-based beam report based on whether the channel measurement resource (CMR) corresponding to each of the plurality of resource indicators in the same group and the measurement result of each of the plurality of CMR sets can be received simultaneously; and The step of sending said group-based beam report.

4. A base station, comprising: A control unit, wherein it is determined that the mapping order of the resource indicators corresponding to each of the plurality of channel measurement resource sets, i.e., the plurality of CMR sets, in the group-based beam report is determined by the terminal based on whether the CMR corresponding to each of the plurality of resource indicators in the same group can be simultaneously received and the measurement result of each of the plurality of CMR sets; and A receiving unit receives the group-based beam report.

5. A system having a terminal and a base station, The terminal has: A control unit, based on whether a channel measurement resource (CMR) corresponding to each of a plurality of resource indicators in the same group and a measurement result of each of a plurality of CMR sets can be simultaneously received, determines a mapping order of resource indicators corresponding to each of the plurality of CMR sets in a group-based beam report; and a sending unit, sending the group-based beam report, The base station has: A control unit controls the reception of the group-based beam report.

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