Terminal, wireless communication method, and base station

Abstract

The purpose of the present invention is to appropriately perform group-based beam reporting associated with UL transmission. A terminal according to one embodiment of the present disclosure is provided with: a reception unit that receives resource information pertaining to channel state information resources that can be used for UL group-based beam reporting; and a control unit that, on the basis of the resource information, performs a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report.

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) has been 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) has been standardized for the purpose of further increasing capacity and upgrading (advancing) of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP)).

[0003] Subsequent systems of LTE (for example, also known as the fifth generation mobile communication system (5G), 5G+(plus), the sixth generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also discussed.

[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 16 NR, group-based beam reporting is set to be effective, and UE supports reporting of 2 different beam indices for each reporting setting. In Rel.17, enhancements to beam management associations are supported for user terminals (user terminals, user equipment (UE)) with multiple panels (multi-panels), multiple transmission / reception points (multi-transmission / reception points (TRP)), etc.

[0009] In addition, after Rel.18, it is also envisioned to introduce / support group-based beam reporting associated with UL transmission.

[0010] However, how to perform group-based beam reporting associated with UL transmission has not been studied. If this is not clear, proper communication between the TRP and the UE cannot be performed, and there is a concern that communication throughput will be reduced.

[0011] 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 perform group-based beam reporting associated with UL transmission.

[0012] Means for solving problems

[0013] A terminal involved in one embodiment of the present disclosure comprises: a receiving unit, which receives resource information related to channel state information resources that can be used for UL group-based beam reporting; and a control unit, which performs a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report based on the resource information.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, group-based beam reporting associated with UL transmission can be appropriately performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] 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.

[0018] Figure 3 This is a diagram showing an example of RRC information elements related to the TCI state.

[0019] Figure 4A as well as Figure 4B This is a diagram showing an example of UL transmission of a single panel.

[0020] Figure 5A-5C This is a diagram showing an example of method 1-3 of simultaneous UL transmission using multiple panels.

[0021] Figure 6 It is an excerpt from the RRC information element "CSI-ReportConfig".

[0022] Figure 7 This is a diagram showing an example of CSI reporting in Rel.15NR.

[0023] Figure 8 This is a diagram showing an example of CSI reporting for multi-group beam reporting after Rel.17NR.

[0024] Fig. 9 This is a diagram showing an example of UL group-based beam reporting involved in the first embodiment.

[0025] Fig.10 This is a diagram showing another example of UL group-based beam reporting involved in the first embodiment.

[0026] Fig.11 This is a diagram showing another example of UL group-based beam reporting involved in the first embodiment.

[0027] Fig.12 This is a diagram showing another example of UL group-based beam reporting involved in the first embodiment.

[0028] Fig.13 This is a diagram showing another example of UL group-based beam reporting involved in the first embodiment.

[0029] Fig.14 This is a diagram showing another example of UL group-based beam reporting involved in the first embodiment.

[0030] Fig.15 This is a diagram showing an example of UL group-based beam reporting involved in the second embodiment.

[0031] Fig.16 It is a diagram showing another example of UL group-based beam reporting involved in the second embodiment.

[0032] Fig.17 It is a diagram showing another example of UL group-based beam reporting involved in the second embodiment.

[0033] Fig.18It is a diagram showing another example of UL group-based beam reporting involved in the second embodiment.

[0034] Fig.19 This is a diagram showing an example of UL group-based beam reporting involved in the third embodiment.

[0035] Fig. 20 It is a diagram showing another example of UL group-based beam reporting involved in the third embodiment.

[0036] Fig.21 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0037] Fig. 22 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0038] Fig.23 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0039] Fig.24 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment.

[0040] Fig.25 This is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0041] (CSI)

[0042] In NR, the UE measures the channel state using a reference signal (or the resources used for the reference signal) and feeds back (reports) the channel state information (CSI) to the network (e.g., base station).

[0043] The UE may also measure the channel state by using at least one of the Channel State Information Reference Signal (CSI-RS), the Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, the Synchronization Signal (SS), the DeModulation Reference Signal (DMRS), etc.

[0044] 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.

[0045] Resources used to measure signal components for CSI may also be referred to as signal measurement resources (Signal Measurement Resource (SMR)) and channel measurement resources (Channel Measurement Resource (CMR)). SMR (CMR) may also include, for example, NZP CSI-RS resources, SSBs, etc. used for channel measurement.

[0046] The resource used to measure the interference component for CSI may also be referred to as an 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 for interference measurement.

[0047] 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.

[0048] 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), L1-SNR (Signal to Noise Ratio), etc.

[0049] CSI may include multiple parts. CSI part 1 may include information with a relatively small number of bits (eg, RI). CSI part 2 may include information with a relatively large number of bits (eg, CQI), such as information determined based on CSI part 1.

[0050] In addition, CSI can also be divided into several CSI types. Depending on the CSI type, the type and size of the reported information can also be different. For example, a CSI type set for communication using a single beam (also referred to as type 1 (type I) CSI, single beam CSI, etc.) and a CSI type set for communication using multiple beams (also referred to as type 2 (type II) CSI, multi-beam CSI, etc.) can also be specified. The use of CSI types is not limited to this.

[0051] As a CSI feedback method, periodic CSI (P-CSI) reporting, aperiodic CSI (A-CSI) reporting, semi-persistent CSI (SP-CSI) reporting, etc. are studied.

[0052] The UE may also be notified of the CSI measurement setting information by using higher layer signaling, physical layer signaling, or a combination thereof.

[0053] In the present disclosure, the high-layer signaling may also be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0054] 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.

[0055] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)).

[0056] 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.

[0057] Figure 1A 1B 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 The information elements are recorded using the ASN.1 (Abstract Syntax Notation One) recording method. In addition, diagrams related to other RRC information elements (or RRC parameters) of the present disclosure are also recorded using the same recording method.

[0058] 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) ​​of the CSI resource configuration information ("CSI-ResourceConfigId").

[0059] In addition, regarding the ID of the CSI resource setting information corresponding to each resource information (which may also be referred to as the CSI resource setting ID), one or more of them may be the same value or different values.

[0060] 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").

[0061] The resource type indicates the behavior of the time domain 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.

[0062] In addition, the channel measurement resources may be used, for example, for calculation of CQI, PMI, L1-RSRP, etc. In addition, the interference measurement resources may be used for calculation of L1-SINR, L1-SNR, L1-RSRQ, and other indicators related to interference.

[0063] 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 a corresponding resource set.

[0064] "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.

[0065] The NZP CSI-RS resource set list information ("nzp-CSI-RS-ResourceSetList") may also include the NZP CSI-RS resource set ID ("NZP-CSI-RS-ResourceSetId"), the number of which is the maximum number of NZP CSI-RS resource sets for each CSI resource setting ("maxNrofNZP-CSI-RS-ResourceSetsPerConfig"). The maximum number of NZP CSI-RS resource sets for each CSI resource setting ("maxNrofNZP-CSI-RS-ResourceSetsPerConfig") may also be a maximum of 16 when the resource type is "aperiodic", and 1 in other cases (when the resource type is "semi-persistent" or "periodic").

[0066] The SSB resource set list information for CSI measurement ("csi-SSB-ResourceSetList") may also include a CSI-SSB resource set ID ("CSI-SSB-ResourceSetId"), the number of which is the maximum number of SSB resource sets for CSI measurement set for each CSI resource ("maxNrofCSI-SSB-ResourceSetsPerConfig"). The maximum number of SSB resource sets for CSI measurement set for each CSI resource ("maxNrofCSI-SSB-ResourceSetsPerConfig") may also be 1.

[0067] The CSI-IM resource set list information ("csi-IM-ResourceSetList") may also include a CSI-IM resource set ID ("CSI-IM-ResourceSetId"), the number of which is the maximum number of CSI-IM resource sets for each CSI resource setting ("maxNrofCSI-IM-ResourceSetsPerConfig"). The maximum number of CSI-IM resource sets for each CSI resource setting ("maxNrofCSI-IM-ResourceSetsPerConfig") may also be a maximum of 16 when the resource type is "aperiodic", and 1 in other cases.

[0068] 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.

[0069] 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").

[0070] 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.

[0071] 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 may also be an integer greater than 0 and less than 63, and is used to identify the SSB within the SS burst.

[0072] Figure 3 This is a diagram showing an example of RRC information elements related to the TCI state.

[0073] The TCI state refers to information related to Quasi-Co-Location (QCL) of a channel or signal, and may also be referred to as spatial reception parameters, spatial relation information, etc. The TCI state may also be set or assigned to the UE for each channel or each signal.

[0074] 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 at least one of information related to the reference signal of the QCL source (RS associated information ("referenceSignal")) and 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 (for example, 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.

[0075] The UE can also control reception processing (for example, at least one of reception, demapping, demodulation, decoding, reception beam determination, etc.), transmission processing (for example, at least one of transmission, mapping, modulation, coding, transmission beam determination, etc.), etc. with respect to at least one of the signal and the channel (expressed as signal / channel) based on the TCI state corresponding to the TCI state ID associated with the signal / channel.

[0076] 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.

[0077] After Rel.17 / 18, it is envisaged to support UL transmission utilizing multiple UE panels.

[0078] (Single panel delivery)

[0079] The single-panel UL transmission method or single-panel UL transmission method candidate may also apply at least one of the following transmission methods A, B (single-panel UL transmission methods A, B). In addition, in the present disclosure, the panel / UE panel may also be rewritten as a UE capability value set (e.g., UE capability value set) reported according to each UE capability.

[0080] [Transmission method A: UL transmission of single-panel single TRP]

[0081] In Rel.15 and Rel.16, the UE uses a transmission method that transmits UL to one TRP at one time from only one beam and panel ( Figure 4A ).

[0082] [Transmission method B: single-panel multi-TRP UL transmission]

[0083] In Rel.17, the following case is studied: namely, UL transmission is performed only from one beam and panel at one time, and repeated transmission is performed for multiple TRPs. Figure 4B ).exist Figure 4B In the example, after the UE sends PUSCH from panel #1 to TRP #1 (switching beams and panels), it sends PUSCH from panel #2 to TRP #2. The two TRPs are connected via an ideal backhaul.

[0084] (Multi-panel sending)

[0085] After Rel.18, in order to improve the throughput / reliability of UL, for more than one TRP, support is provided for simultaneous UL transmission using multiple panels (for example, simultaneous multi-panel UL transmission (SiMPUL)). In addition, multi-panel UL transmission methods are studied for specific UL channels (for example, PUSCH / PUCCH).

[0086] As a multi-panel UL transmission, for example, a maximum of X (for example, X=2) and a maximum of Y (for example, Y=2) panels can also be supported. In multi-panel UL transmission, when the UL precoding indication for PUSCH is supported, the codebook of the existing system (for example, before Rel.16) can also be supported for simultaneous transmission of multiple panels. Considering multi-TRP operations based on single DCI and multi-DCI, the number of layers in the full panel can be a maximum of x (for example, x=4), and the number of codewords (CW) in the full panel can also be a maximum of y (for example, y=2).

[0087] Regarding the multi-panel UL transmission method or the multi-panel UL transmission method candidate, at least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3) is studied. It is also possible to support only one of the transmission methods 1 to 3. It is also possible to support multiple methods including at least one of the transmission methods 1 to 3, and one of the multiple transmission methods is set to the UE.

[0088] [Transmission method 1: coherent multi-panel UL transmission]

[0089] Multiple panels can also be synchronized with each other. All layers are mapped to all panels. Multiple simulated beams are indicated. The SRS Resource Indicator (SRI) field can also be extended. This approach can utilize up to 4 layers for UL.

[0090] exist Figure 5A In the example, the UE maps a codeword (CW) or a transport block (TB) to L layers (PUSCH (1, 2, ..., L)), and transmits L layers from each of the two panels. Panel #1 is coherent with panel #2. Transmission method 1 can obtain diversity gain. The total number of layers in the two panels is 2L. When the maximum number of layers is 4, the maximum number of layers in one panel is 2.

[0091] [Transmission mode 2: non-coherent multi-panel UL transmission of one codeword (CW) or transport block (TB)]

[0092] Multiple panels may also be asynchronous. Different layers may be mapped to different panels, and to one CW or TB for PUSCH from multiple panels. Layers corresponding to one CW or TB may also be mapped to multiple panels. The transmission method may also utilize a maximum of 4 layers or a maximum of 8 layers for the UE. In the case of supporting a maximum of 8 layers, the transmission method may also support one CW or TB utilizing a maximum of 8 layers.

[0093] exist Figure 5B In the example, the UE maps 1CW or 1TB to k layers (PUSCH (1, 2, ..., k)) and Lk layers (PUSCH (k+1, k+2, ..., L)), sends k layers from panel #1, and sends Lk layers from panel #2. Transmission method 2 can obtain gains based on multiplexing and diversity. The total number of layers in the 2 panels is L.

[0094] [Transmission method 3: Non-coherent multi-panel UL transmission of 2 CW or TB]

[0095] Multiple panels may also be asynchronous. Different layers are applied to different panels, and to 2 CWs or TBs for PUSCH from multiple panels. Layers corresponding to one CW or TB may also be mapped to one panel. Layers corresponding to multiple CWs or TBs may also be mapped to different panels. The transmission method may also utilize a maximum of 4 layers or a maximum of 8 layers for the UE. In the case of supporting a maximum of 8 layers, the transmission method may also support a maximum of 4 layers for each CW or TB.

[0096] exist Figure 5CIn the example, the UE can also map CW#1 or TB#1 of the 2 CWs or 2 TBs to k layers (PUSCH (1, 2, ..., k)), and map CW#2 or TB#2 to Lk layers (PUSCH (k+1, k+2, ..., L)), send k layers from panel #1, and send Lk layers from panel #2. Transmission method 3 can obtain gain based on multiplexing and diversity. The total number of layers in the 2 panels is L.

[0097] In each of the above transmission modes, the base station may also use UL TCI or panel ID to set or indicate panel-specific transmission for UL transmission. UL TCI (UL TCI state) may also be based on signaling similar to the DL beam indication supported in Rel.15. The panel ID may also be implicitly or explicitly applied to the transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. In the case where the panel ID is explicitly notified, the panel ID may also be set in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource setting or spatial relationship information).

[0098] In the above-mentioned one or more transmission methods / modes, multi-panel UL transmission (for example, simultaneous multi-panel UL transmission (SiMPUL)) for scheduling PUSCH based on one DCI (single DCI) / scheduling PUSCH based on multiple DCIs (multi-DCI) is studied.

[0099] (UE capability value set)

[0100] After Rel.17NR, it is supported to report a list of UE capability value sets (e.g., UE capability value sets) in a UE capability report (e.g., UE capability report). A UE capability value set may also mean a panel supported / utilized by the UE. A UE capability value set may also be rewritten as a UE capability value (e.g., UE capability value).

[0101] Each UE capability value set in Rel.17 may also be constructed based on the maximum number of supported SRS ports. For example, when the maximum number of SRS ports is X, the UE reports X (eg, X=4) UE capability value sets.

[0102] By having the UE report a list of UE capability value sets, activation and selection of UE-led panels can be performed. The correspondence between the reported CSI-RS / SSB resource index (CSI / SSBRI) and one of the UE capability value sets in the reported list can also be determined by the UE and notified to the NW in the beam reporting instance.

[0103] After Rel.17NR, in order to facilitate the activation and selection of UE-led panels, the UE is supported to report a list of UE capability value sets. Each UE capability value set contained in the list is composed of the maximum number of SRS ports supported, and any two UE capability value sets can also be set to be different (or set separately). The UE capability value set can be set publicly in multiple (or all) BWP / CCs in the same band, and can also be set publicly in multiple (or all) BWP / CCs in the same band combination (BC (band combination)).

[0104] Each UE capability value set of Rel.17 may also be composed of the maximum number of SRS ports supported. In addition, after Rel.18, the UE capability value set may also be composed of at least one of the maximum UL rank, the maximum number of beams, the maximum number of SRS resource sets, the maximum number of SRS resources, the maximum number of SRS resources per set, EIRP, and transmit power associated capability in addition to the maximum number of SRS ports supported (or instead).

[0105] When multiple (for example, 2) UE capability value sets are set to be different, it can also mean that any two capability value sets have different maximum supported SRS port numbers. In addition, multiple (for example, 2) UE capability value sets can also have the same capabilities. For example, two UE capability value sets can also have the same maximum supported SRS port number. In this case, two UE capability value sets with the same maximum number of supported SRS ports can also be set to different by other parameters (for example, EIRP).

[0106] (Beam Management)

[0107] In Rel.15NR, the method of beam management (BM) is discussed. In this beam management, beam selection is performed 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.

[0108] 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 result may also be, for example, CSI including at least one of L1-RSRP, L1-RSRQ, L1-SINR, L1-SNR, etc.

[0109] 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.

[0110] The CSI measurement used 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.

[0111] The beam report may 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 indicators related to interference (for example, any indicator other than L1-RSRP), etc.

[0112] CSI reporting may also be performed based on the CSI reporting configuration configured by higher layer parameters. Figure 6 This is an example of the RRC information element "CSI-ReportConfig" in Rel.16. Figure 6 Excerpted from Figure 1A The other parts of the same CSI report configuration information (CSI-ReportConfig).

[0113] The CSI report configuration information may also include information about a parameter to be reported by a reporting instance (e.g., a CSI), i.e., a "report quantity" (which may also be expressed by an RRC parameter "reportQuantity"). The report quantity is defined by means of an ASN.1 object called a "choice". Therefore, one of the parameters (cri-RSRP, ssb-Index-RSRP, etc.) specified as the report quantity is set.

[0114] For a UE in which the higher-layer 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), the UE may include in a beam report (a reporting instance) a different number of beam measurement resource IDs (for example, SSBRI, CRI) than the higher-layer parameters included in the CSI report setting information (for example, the RRC parameter "nrofReportedRS" indicating the number of RSs reported), as well as measurement results corresponding to each ID (for example, L1-RSRP).

[0115] A UE with groupBasedBeamReporting set to enabled reports CRI / SSBRI in groups (e.g., CRI / SSBRI of a group) for each reporting setting. The group includes multiple (e.g., 2) CRI / SSBRIs. It can also mean that multiple (e.g., 2) CRI / SSBRIs are received by the UE at the same time.

[0116] For example, a UE in which groupBasedBeamReporting is set to be valid (enabled) may also include two different beam measurement resource IDs (e.g., CRI / SSBRI) and two measurement results (e.g., L1-RSRP) corresponding to the respective IDs in the beam report for each report setting. The two beam measurement resources (CSI-RS resources, SSB resources) may be received simultaneously by the UE using one spatial domain reception filter, or may be received simultaneously using multiple simultaneous spatial domain reception filters.

[0117] also, Figure 2A The NZP CSI-RS resource set information shown may also include information related to repetition in the resources within the resource set. The information related to the repetition may also represent "ON" or "OFF", for example. In addition, "ON" may also be expressed as "enabled or valid", and "OFF" may also be expressed as "disabled or invalid".

[0118] For example, with respect to a resource set that is repeatedly set to "ON", 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).

[0119] Regarding the resource set that is repeatedly set to "OFF", the UE may also perform the following control: it is not assumed (or may not be assumed) 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 not transmitted using the same beam (transmitted using different beams). That is, regarding the resource set that is repeatedly set to "OFF", the UE may also assume that the base station is performing beam scanning.

[0120] 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.

[0121] Figure 7 This is a diagram showing an example of CSI reporting in Rel.15NR. Figure 7 Indicates the mapping order of CSI fields included in a CSI report (nth CSI report #n) for CSI / RSRP or SSBRI / RSRP reporting specified in Rel.15.

[0122] Figure 7 The CSI report can include more than one group of CSI / SSBRI and RSRP. The number of these groups can be set by a higher layer parameter (eg, RRC parameter "nrofReportedRS") used to indicate the number of reference signal resources to be reported.

[0123] For L1-RSRP reporting, when nrofReportedRS is set to 1 (value is "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.

[0124] Regarding L1-RSRP reporting, when nrofReportedRS is set to be greater than 1, or groupBasedBeamReporting is set to be valid, the UE utilizes a report based on differential L1-RSRP. Specifically, the UE includes RSRP#1 for indicating the L1-RSRP with the largest measured value in the same CSI report (reporting instance), and a differential RSRP#k calculated with reference to the largest measured value (for example, as a difference relative to the measured value) for the kth (k=2, 3, 4 in FIG. 5) largest L1-RSRP. Here, differential RSRP#k can be a field with fewer bits (for example, n bits) than the above-mentioned specific number. In Rel.15NR, n=4.

[0125] For example, for each group, 7 bits of the absolute RSRP value for the first beam (range -140 to -44 dB with 1 dB step size) and 4 bits of the differential RSRP value for the second beam are reported.

[0126] In addition, when groupBasedBeamReporting is set to be valid, the UE includes RSRP#1 and differential RSRP#2 in the same CSI report.

[0127] Figure 7 CSI / SSBRI#k is a field indicating the CSI / SSBRI corresponding to RSRP#k or differential RSRP#k (included when RSRP#k or differential RSRP#k is reported).

[0128] In addition, in NRs after Rel.16, nrofReportedRS may be a value greater than or equal to 4. The CSI report may also include 4 or more sets of CSI / SSBRI and RSRP. The above m, n, etc. are not limited to 7 and 4, respectively.

[0129] In addition, L1-SINR reporting can also be performed in NR after Rel.16. For L1-SINR reporting, the content after rewriting RSRP in the above-mentioned L1-RSRP report into SINR can be applied. In addition, in this case, the settings / parameters for SINR can be different from the settings / parameters for RSRP. For example, the above-mentioned nrofReportedRS can also be rewritten using nrofReportedRSForSINR, which represents the number of reference resources for the reporting object of SINR.

[0130] For L1-RSRP calculation, the UE may also be configured with a CSI-RS resource setting of up to 16 CSI-RS resource sets with each resource set containing up to 64 resources. The total number of different CSI-RS resources across all resource sets may be less than 128.

[0131] For L1-SINR calculation, in channel measurement, the UE may also be configured with a CSI-RS resource setting of a maximum of 16 CSI-RS resource sets including a total of a maximum of 64 CSI-RS resources or a maximum of 64 SS / PBCH blocks.

[0132] For a UE configured with the information of the aperiodic trigger state list of CSI (high-layer parameter "CSI-AperiodicTriggerStateList"), when a resource setting linked to CSI-ReportConfig has multiple aperiodic resource sets, only one aperiodic CSI-RS resource of the resource setting is associated with the trigger state. At this time, the UE can also be configured by the high layer for each trigger state and each resource setting so that a CSI-IM / NZP CSI-RS resource set is selected from the resource setting.

[0133] The UE may also not expect or assume the following situation: that is, in the channel measurement resource setting of the CSI-ReportConfig where the reporting quantity (high-level parameter reportQuantity) is set to "none", "cri-RI-CQI", "cri-RSRP", "ssb-Index-RSRP", "cri-SINR" or "ssb-Index-SINR", at least one of the NZP CSI-RS resources and SS / PBCH block resources exceeding 64 is set.

[0134] When the UE is configured with CSI-ReportConfig, and the report quantity (high-level parameter reportQuantity) in the CSI-ReportConfig is set to "cri-RSRP", "cri-SINR" or "none", and the CSI-ReportConfig is linked to a resource setting in which the high-level parameter resourceType is set to "aperiodic", the UE may not assume the following situation: that is, more than 16 CSI-RS resources are set in the CSI-RS resource set included in the resource setting.

[0135] When the UE is set with CSI-ReportConfig, and the reporting quantity (high-level parameter reportQuantity) in the CSI-ReportConfig is set to "cri-RSRP", "cri-RI-PMI-CQI", "cri-RI-i1", "cri-RI-i1-CQI", "cri-RI-CQI", "cri-RI-LI-PMI-CQI" or "cri-SINR", and the resources for channel measurement in the corresponding resource set are set to 2 or more, the UE can also derive CSI parameters other than CRI based on the reported CRI. Here, CRI k (k ≥ 0) corresponds to: the k+1th entry of the associated nzp-CSI-RS-Resource in the corresponding NZP-CSI-RS-ResourceSet for channel measurement, and the k+1th entry of the associated csi-IM-Resource of the csi-IM-ResourceSet or the k+1th entry of the associated nzp-CSI-RS-Resource of the corresponding NZP-CSI-RS-ResourceSet for interference measurement (when reportQuantity is set to "cri-SINR" in CSI-ReportConfig). When 2 CSI-RS resources are set, each resource contains a maximum of 16 CSI-RS ports. When 3 or more and 8 or less CSI-RS resources are set, each resource may also contain a maximum of 8 CSI-RS ports.

[0136] When CSI-ReportConfig is set for the UE and the reporting quantity (high-layer parameter reportQuantity) in the CSI-ReportConfig is set to "ssb-Index-RSRP", SSBRI can also be reported. Here, SSBRI k (k≥0) can also correspond to the k+1th entry set in the associated csi-SSB-ResourceList in the corresponding CSI-SSB-ResourceSet.

[0137] When CSI-ReportConfig is set for the UE and the report quantity (high-layer parameter reportQuantity) in the CSI-ReportConfig is set to "ssb-Index-SINR", L1-SINR can also be derived based on the reported SSBRI. Here, SSBRI k (k≥0) may also correspond to: the k+1th entry set of the associated csi-SSB-ResourceList in the corresponding CSI-SSB-ResourceSet for channel measurement, the k+1th entry of the associated csi-IM-Resource of the csi-IM-ResourceSet, or the k+1th entry of the associated nzp-CSI-RS-Resource of the corresponding NZP-CSI-RS-ResourceSet for interference measurement.

[0138] (Enhanced group-based beam reporting)

[0139] For future wireless communication systems (for example, after Rel.17), research is conducted on the extension of beam management associations (for example, also referred to as beam reporting suitable for multiple TRPs, enhanced group-based beam reporting) for user terminals (user terminal, User Equipment (UE)) with multiple panels (multi-panel), multiple transmission / reception points (multi-transmission / reception point (TRP)), etc.

[0140] The above groupBasedBeamReporting can report a group containing multiple (for example, 2) CRI / SSBRIs through one report, so it is suitable for applications such as multi-TRP transmission, multi-panel reception, 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.

[0141] In Rel.15 and 16, a UE that has group-based beam reporting enabled can only report one group containing two different CRI / SSBRIs (also called beam indexes) for each reporting setting. Therefore, for Rel.17, it is envisaged to expand the number of groups that can be reported through group-based beam reporting.

[0142] For example, two resource sets for channel measurement (e.g., CMR sets) can be set / triggered as periodic / semi-persistent / aperiodic resource types. Two resource sets for channel measurement (e.g., CMR sets) can also be, for example, two CSI-SSB-resource sets / two NZP-CSI-RS resource sets. The UE can also be set to be able to report up to 4 CRI / SSBRI groups. In addition, the number of groups that can be reported (or, the number of candidates 1 / 2 / 3 / 4) can be set by high-level parameters.

[0143] Each group has multiple (e.g., 2) CRI / SSBRIs, and the CRI / SSBRI of each group is selected from two CSI resource sets used for report setting (e.g., report setting). In addition, the two CRI / SSBRIs of each group may also mean that the UE can receive simultaneously (e.g., receive simultaneously using one spatial domain reception filter).

[0144] Figure 8 FIG. 1 is a diagram showing an example of CSI reporting in the case of enhanced group-based beam reporting. Figure 8 , the mapping order of CSI fields included in a report (e.g., the nth CSI report #n) for group-based CSI / RSRP or SSBRI / RSRP reporting is shown.

[0145] The CSI report may also include a maximum of X (for example, X=4) resource groups. Each group includes multiple (for example, 2) CRI / SSBRIs. Here, the case where each resource group includes CRI or SSBRI#1 and CRI or SSBRI#2 is shown.

[0146] The CSI field may also include a resource set indicator (e.g., Resource set indicator). The value of the resource set indicator may also indicate the channel measurement resource set for which the CRI or SSBRI#1 of the first resource group is reported. For example, a 1-bit resource set indicator with a value of 0 or 1 represents the first or second channel measurement resource set, respectively, from which the CRI or SSBRI#1 of the first resource group may be reported. All remaining resource groups (e.g., if there are other resource groups to be reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups may also be reported (or selected) from the channel measurement resource set indicated by the resource set indicator.

[0147] That is, the CRI or SSBRI#1 of each group may also be reported (or selected) from a resource set indicated by a resource set indicator (e.g., Resource set indicator), and the CRI or SSBRI#2 may be reported (or selected) from another resource set. In this way, CRI or SSBRI#1 and CRI or SSBRI#2 may also be reported from different channel measurement resource sets in all resource groups.

[0148] In addition, the RSRP corresponding to the beam index (e.g., CRI or SSBRI) of each resource group is reported. For example, the RSRP of the CRI or SSBRI of a specific group may be reported, and the difference from the RSRP of the CRI or SSBRI of the specific group may be reported for other RSRPs. The RSRP of the CRI or SSBRI of a specific group may also be the RSRP of the CRI or SSBRI#1 of the first resource group.

[0149] Enhanced group-based beam reporting may also be set (or enabled / activated) by a specific higher-level parameter (e.g., groupBasedBeamReporting-r17). Alternatively, enhanced group-based beam reporting may also be determined to be enabled when a higher-level parameter related to the number of groups to be reported (e.g., nrofReportedGroups-r17) is set.

[0150] As mentioned above, after Rel.18, research is conducted on: supporting simultaneous UL transmission using multiple panels (for example, simultaneous multi-panel UL transmission (SiMPUL)) for more than one TRP (for example, multi-TRP).

[0151] In the group-based beam report of Rel.15 / 16 / 17, the UE can indicate that two CRI / SSBRIs of each group can be received by the UE at the same time by reporting the group of CRI / SSBRI. In the present disclosure, this report can also be referred to as DL group-based beam report.

[0152] Regarding simultaneous multi-panel UL transmission after Rel.18, the UE needs to report whether the UE can send 2 beams simultaneously. As a result, the base station can understand which beam is indicated / utilized for simultaneous multi-panel UL transmission. For example, the UE can also indicate through a beam group report that 2 beams (or beam indices) of each group can be sent by the UE at the same time. In the present disclosure, the report may also be referred to as a UL group-based beam report. The UL group-based beam report may also apply the same mechanism as the group-based beam report supported in Rel.15 / 16 / 17.

[0153] When UL group-based beam reporting is performed, how to perform the reporting becomes a problem. For example, how to control the relationship between UL group-based beam reporting and DL group-based beam reporting (for example, reporting method) becomes a problem.

[0154] More specifically, the question is whether the UL group-based beam report and the DL group-based beam report are reported together or separately. Or, the question is how to set / enable / activate the UL group-based beam report.

[0155] The inventors of the present invention paid attention to the introduction / support of UL group-based beam reporting, studied the control method of the UL group-based beam reporting, and conceived of the present embodiment.

[0156] 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.

[0157] In the present disclosure, "A / B", "at least one of A and B", "A and B" may also be replaced by each other. In the present disclosure, "A / B / C", "at least one of A, B and C", "A, B and C" may also be replaced by each other.

[0158] In the present disclosure, cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, activated DL BWP, activated ULBWP, and band may also be replaced with each other.

[0159] In the present disclosure, index, ID, indicator, and resource ID may also be overwritten with each other.

[0160] In the present disclosure, support, control, be able to control, operate, and be able to operate may also be rewritten mutually.

[0161] In addition, in the present disclosure, the panel (receiving panel), uplink (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 rewritten with each other.

[0162] The panel identifier (Identifier (ID)) and the panel can also be overwritten. The TRP ID and the TRP can also be overwritten.

[0163] In addition, in the present disclosure, groups, sets, clusters, panels, groups related to (reporting) beams, etc., can also be rewritten one another.

[0164] In the following embodiments, the beam index / beam ID may be rewritten as, for example, CRI / SSBRI. In addition, RSRP / SINR may be rewritten as any beam-related measurement result.

[0165] In addition, the name of the CSI-RS association can also be rewritten as the corresponding name of the SSB association. For example, CSI-RS resources can also be rewritten as SSB resources. In other words, CSI-RS can also be rewritten as CSI-RS / SSB. CRI can also be rewritten as CRI / SSBRI.

[0166] In addition, in the present disclosure, the "receiving panel" may also correspond to at least one of the following: an RS group, a TRP index, a CORESET pool index, an RS group set for group-based beam reporting, a TCI state (or, TCI) pool, a QCL assumption (or QCL) group, and a beam group.

[0167] In addition, in the present disclosure, "same position" may also be rewritten as "same i-th", "corresponding to the same TRP", etc. In addition, in the present disclosure, "i-th" may also mean the i-th included in a certain CSI report, or the i-th included in a certain group of CSI reports.

[0168] In the present disclosure, "set", "CMR set", "CMR resource set", etc. may also be replaced by each other. In addition, in the present disclosure, "SSBRI / CRI" and "CMR index" may also be replaced by each other. In addition, in the present disclosure, "RSRP / SINR" may also be replaced by "L1-RSRP / L1-SINR / L3-RSRP / L3-SINR". In addition, L3 may also mean Layer 3.

[0169] (Wireless Communication Method)

[0170] The UE may also perform group-based beam reporting related to UL transmission in the CSI report (hereinafter also referred to as UL group-based beam reporting). The UL group-based beam reporting may be performed in a CSI report #n (for example, a report index) that is common to the DL group-based beam reporting, or in a CSI report that is different from the DL group-based beam reporting.

[0171] The UE may also receive information related to a CSI resource set including more than one (e.g., multiple) CRI / SSBRI. The UE may also measure the CIS-RS / SSB resources corresponding to the CRI / SSBRI included in the CSI resource set and report the measurement results (e.g., CRI / SSBRI) as a group-based beam report.

[0172] The UE receives at least one of information related to the CSI resource set (or CRI / SSBRI) used in the DL group-based beam report and information related to the CSI resource set (or CRI / SSBRI) used in the UL group-based beam report. The information can also be set to the UE through a specific high-level parameter.

[0173] The CSI resource set (or CRI / SSBRI) used in the UL group-based beam report may also be set in common with the CSI resource set (or CRI / SSBRI) used in the DL group-based beam report. Alternatively, the CSI resource set (or CRI / SSBRI) used in the UL group-based beam report may also be set separately from the CSI resource set (or CRI / SSBRI) used in the DL group-based beam report.

[0174] <First Embodiment>

[0175] In the first embodiment, an example of group-based beam reporting related to UL transmission is described.

[0176] The UE may also perform UL group-based beam reporting in common with DL group-based beam reporting. For example, the UE may also report a common beam group (e.g., common group(s) of beams) for a DL group-based beam report (e.g., DL group-based beam report) and a UL group-based beam report (e.g., UL group-based beam report). In the present disclosure, groups, beam groups, and resource groups may also override each other.

[0177] For each group, the UE can simultaneously receive beam groups (multiple beam indices included in the same group) (or, support simultaneous reception), and can also simultaneously send beam groups (multiple beam indices included in the same group) (or, support simultaneous sending).

[0178] The UE may also perform UL group-based beam reporting using at least one of the following options 1-1 to 1-4.

[0179] [Option 1-1]

[0180] The UE may report multiple (e.g., 2) CRI / SSBRI (a group) in one reporting instance (e.g., single reporting instance). The UE may also be able to simultaneously receive (or support receiving) 2 CRI-RS / SSB resources, and may also simultaneously send (or support sending) 2 CSI-RS / SSB resources.

[0181] The UE being able to simultaneously transmit two CSI-RS / SSB resources may also mean that the UE is able to simultaneously transmit (or, supports simultaneous transmission) two UL transmissions whose spatial relationship is associated with the two CSI-RS / SSB resources. In other words, the UE may also support simultaneous transmission of two UL transmissions, the two UL transmissions having spatial relationships (or, TCI states / quasi-addressing / UL resources) respectively associated with the two CSI-RS / SSB resources included in the same group.

[0182] Fig. 9 1 is a diagram showing an example of CSI reporting when DL group-based beam reporting and UL group-based beam reporting are performed in common. Fig. 9 , the mapping order of CSI fields included in a report (e.g., the nth CSI report #n) for group-based CSI-RSRP or SSBRI / RSRP is shown.

[0183] In addition, for the CSI report shown in the following description, the order of the fields may be appropriately replaced. In addition, for the CSI report shown in the following description, RSRP may also be rewritten as SINR. In addition, for the CSI report shown in the following description, when one CSI-RS resource set (e.g., a single CSI-RS resource set) is set, a structure that does not include a resource set indicator field may also be set.

[0184] Here, the case where CSI / SSBRI#1 and CRI / SSBRI#2 (one group) are reported as group-based beam reports is shown. In this case, it may also mean that the UE can simultaneously receive CRI / SSBRI#1 and CRI / SSBRI#2 included in the same group, and can simultaneously send 2 UL transmissions associated with CRI / SSBRI#1 and CRI / SSBRI#2 included in the same group. In the present disclosure, CRI / SSBRI may also be rewritten as CSI-RS / SSB resources.

[0185] [Option 1-2]

[0186] The UE may also report multiple (e.g., 2) CRI / SSBRIs of N groups in one reporting instance (e.g., single reporting instance). In this case, the UE may also be able to simultaneously receive (or support receiving) 2 CRI-RS / SSB resources, and may also simultaneously send (or support sending) 2 CSI-RS / SSB resources of each group.

[0187] The number of groups (eg, N) may also be specified in advance in the specification, or may be set by a higher-layer parameter related to the number of groups (eg, nrofReportedRSgroup). In addition, when N=1, option 1-1 may also be applied.

[0188] Fig.10 1 is a diagram showing an example of CSI reporting when DL group-based beam reporting and UL group-based beam reporting are performed in common. Fig.10 , a case where CRI / SSBRI (here, CRI / SSBRI#1 and CRI / SSBRI#2) of N (here, N=4) resource groups are reported.

[0189] In this case, it may also mean that the UE is able to simultaneously receive CRI / SSBRI#1 and CRI / SSBRI#2 included in the same group, and is able to simultaneously send 2 UL transmissions associated with CRI / SSBRI#1 and CRI / SSBRI#2 included in the same group.

[0190] [Options 1-3]

[0191] The UE may also report multiple (e.g., 2) CRI / SSBRIs of N groups in one reporting instance (e.g., single reporting instance). In this case, the UE may also be able to simultaneously receive 2 CRI-RS / SSB resources for each group (e.g., each of the N groups), and for M of the N (N≥M or N>M) groups, may be able to simultaneously send 2 CSI-RS / SSB resources for each group.

[0192] The number of groups (eg, at least one of N and M) may be pre-specified in the specification, or may be set via a higher-level parameter related to the number of groups (eg, nrofReportedRSgroup).

[0193] 《Option 1-3-1》

[0194] It can be set that for the first / last M groups out of N groups, the UE can simultaneously send the CSI-RS / SSB resources of each group (refer to Fig.11 ).

[0195] Fig.11 It shows that for the first two groups (N=4, M=2) among the four groups, UL group-based beam reporting and DL group-based beam reporting are shared. In this case, it can also be shown that for the first two groups among the four groups, the UE can simultaneously send the CSI-RS / SSB resources of each group. For other groups, only DL group-based beam reporting can also be supported.

[0196] Option 1-3-1 can also be a default operation / default setting.

[0197] 《Option 1-3-2》

[0198] It can also be set as follows: for each group, a beam report (for example, via 1 bit for each group) indicates whether the UE can simultaneously send the two CSI-RS / SSB resources of the group (refer to Fig.12 ).

[0199] Fig.12 The case where the fields representing the following groups among the four groups are set is shown: the group where UL group-based beam reporting and DL group-based beam reporting are shared, or the group where the UE can send 2 CSI-RS / SSBs simultaneously. Here, the case where the indicator (here 1 bit) indicating the application of UL group-based beam reporting for each group (here 1 to 4) is set separately is shown. In addition, the case where DL group-based beam reporting is performed for each group is shown.

[0200] When the identifier of applicability of UL group-based beam reporting for resource group is set to 0, it can also indicate that two CSI-RS / SSB resources in the resource group can be received by the UE simultaneously and further sent simultaneously. In other cases (for example, when the identifier is set to 1), it can also indicate that only the UE receives two CSI-RS / SSB resources in the resource group simultaneously.

[0201] exist Fig.12 The following situation is shown in FIG: the identifier is set to 0 for the first resource group and the second resource group, and the identifier is set to 1 for the third resource group and the fourth resource group. Thus, for each resource group, it is possible to flexibly set whether to perform UL group-based beam reporting and DL group-based beam reporting in a shared manner. In addition, the contents represented by the identifiers 0 and 1 can also be replaced.

[0202] [Options 1-4]

[0203] The UE may also report multiple (e.g., 2) CRI / SSBRIs of N groups in one reporting instance (e.g., single reporting instance). In this case, the UE may also be able to simultaneously send 2 CRI-RS / SSB resources for each group (e.g., each of the N groups), and for M of the N (N≥M or N>M) groups, may be able to simultaneously receive 2 CSI-RS / SSB resources for each group.

[0204] The number of groups (eg, at least one of N and M) may be pre-specified in the specification, or may be set via a higher-level parameter related to the number of groups (eg, nrofReportedRSgroup).

[0205] 《Option 1-4-1》

[0206] It can be set that for the first / last M groups among the N groups, the UE can simultaneously receive the CSI-RS / SSB resources of each group (refer to Fig.13 ).

[0207] Fig.13 The case where the fields representing the following groups among the four groups are set is shown: that is, the group where UL group-based beam reporting and DL group-based beam reporting are shared, or the group where the UE can receive two CSI-RS / SSB resources simultaneously. Here, the case where the indicator (here 1 bit) indicating the application of DL group-based beam reporting for each group (here 1 to 4) is set separately is shown. In addition, the case where UL group-based beam reporting is performed for each group is shown.

[0208] Option 1-4-1 can also be a default operation / default setting.

[0209] 《Option 1-4-2》

[0210] It can also be set as follows: for each group, a beam report (for example, via 1 bit for each group) indicates whether the UE can simultaneously send the two CSI-RS / SSB resources of the group (refer to Fig.14 ).

[0211] Fig.14 The case where the fields representing the following groups among the four groups are set is shown: the group where UL group-based beam reporting and DL group-based beam reporting are shared, or the group where the UE can receive two CSI-RS / SSB resources simultaneously. Here, the case where the indicator (here 1 bit) indicating the application of DL group-based beam reporting for each group (here 1 to 4) is set separately is shown. In addition, the case where UL group-based beam reporting is performed for each group is shown.

[0212] When the identifier of the applicability of DL group-based beam reporting for resource group is set to 0, it can also indicate that the two CSI-RS / SSB resources in the resource group can be received by the UE simultaneously and further sent simultaneously. In other cases (for example, when the identifier is set to 1), it can also indicate that only the UE sends the two CSI-RS / SSB resources in the resource group simultaneously.

[0213] exist Fig.14 The following situation is shown in FIG: the identifier is set to 0 for the first resource group and the second resource group, and the identifier is set to 1 for the third resource group and the fourth resource group. Thus, for each resource group, it is possible to flexibly set whether to perform UL group-based beam reporting and DL group-based beam reporting in a shared manner. In addition, the contents represented by the identifiers 0 and 1 can also be replaced.

[0214] At least one of the following Alt. 1-1 to Alt. 1-2 may be applied to the above-mentioned options 1-1 to 1-4.

[0215] [Alt.1-1]

[0216] When one CSI resource set is set, two CSI-RS / SSB resources of each group can be selected from the one CSI resource set.

[0217] [Alt.1-2]

[0218] When two CSI resource sets are set, two CSI-RS / SSB resources of each group can be selected from the two CSI resource sets.

[0219] In this case, a resource set indicator (e.g., resource set indicator) field is included in the CSI report, and the resource set indicator may also mean the same thing as the group-based beam report of Rel.17. For example, the channel measurement resource set to which the CRI or SSBRI#1 of the first resource group is reported may also be indicated by the value of the resource set identifier. For example, it may also be that a 1-bit resource set indicator with a value of 0 or 1 represents the first or second channel measurement resource set, respectively, and from then on the CRI or SSBRI#1 of the first resource group is reported. All remaining resource groups (e.g., if there are other resource groups to be reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups may also be reported (or selected) from the channel measurement resource set indicated by the resource set indicator.

[0220] [change]

[0221] The CSI-RS / SSB resources used for UL group-based beam reporting may also be different from the CSI-RS / SSB resources used for DL ​​group-based beam reporting. For example, the resources used for UL may also be a subset of the resources used for DL.

[0222] For example, when X CSI-RS / SSB resources are set in a CSI resource set, all resources may be used for DL ​​group-based beam reporting, and part of the resources may be used for UL group-based beam reporting. Part of the resources may also be the first / last Y resources. Y may be defined in the specification or may be set to the UE through higher layer parameters.

[0223] Alternatively, for each CSI-RS / SSB resource, it may be explicitly set / indicated whether it is used for both DL group-based beam reporting and UL group-based beam reporting, only for DL ​​group-based beam reporting, or only for UL group-based beam reporting. In addition, two settings / indications of "beam reporting for both DL and UL group-based beam reporting", "beam reporting for DL ​​group-based beam reporting only", and "beam reporting for UL group-based beam reporting only" may also be supported.

[0224] For DL ​​group-based beam reporting, the maximum number of CSI-RS / SSB resources in the CSI resource group may also be defined, and may also be set by higher layer parameters, etc. For example, the maximum number may also be the same as Rel.17, or higher. For example, the maximum number may also be 64 or 128. The maximum number may also be determined taking into account UE capabilities.

[0225] For UL group-based beam reporting, the maximum number of CSI-RS / SSB resources in a CSI resource set may be defined, or may be set by a higher layer parameter or the like. For example, the maximum number may be the same as or less than the maximum number of DL group-based beam reporting. For example, the maximum number may also be 32 or 64. The maximum number may also be determined taking into account UE capabilities.

[0226] For both DL group-based beam reporting and UL group-based beam reporting, the maximum number of CSI-RS / SSB resources in a CSI resource set may be defined, or may be defined through higher layer parameters, etc.

[0227] <Second Embodiment>

[0228] In the second embodiment, another example of group-based beam reporting related to UL transmission is described.

[0229] In a single reporting instance, the UE reports separate beam groups for DL ​​group-based beam reporting and UL group-based beam reporting.

[0230] The UE can simultaneously receive (or support simultaneous reception) a beam group (multiple beam instances contained in the same group) for the group corresponding to the DL, and can simultaneously send (or support simultaneous sending) a beam group (multiple beam instances contained in the same group) for the group corresponding to the UL.

[0231] The UE may also perform UL group-based beam reporting using at least one of the following options 2-1 to 2-2.

[0232] [Option 2-1]

[0233] The UE may also report multiple (e.g., 2) CRI / SSBRI (more than 1 group) in one reporting instance (e.g., single reporting instance). In this case, it may also mean that the UE is capable of receiving (or supports receiving) 2 CRI-RS / SSB resources simultaneously.

[0234] In addition, the UE may also perform UL group-based beam reporting using a CRI / SSBRI or resource group different from at least one of the CRI / SSBRI and resource group used for DL ​​group-based beam reporting. For example, the UE may also use at least one of the following options 2-1-1 to 2-1-2.

[0235] 《Option 2-1-1》

[0236] The UE may also report one or more (e.g., two) CRI / SSBRIs different from the DL group-based CRI / SSBRI. In this case, it may also mean that the other two CSI-RS / SSB resources can be sent (or supported to be sent) simultaneously (see Fig.15 ).

[0237] Fig.15 This is a diagram showing an example of CSI reporting when DL group-based beam reporting and UL group-based beam reporting are performed separately (or using different CRI / SSBRI). Fig.15 : shows: the mapping order of CSI fields included in a report (eg, the nth CSI report #n) for group-based CSI-RSRP or SSBRI / RSRP reporting.

[0238] Here, it is shown that CRI / SSBRI#1 and CRI / SSBRI#2 are reported for DL ​​group-based beam reporting, and CRI / SSBRI#3 and CRI / SSBRI#4 are reported for UL group-based beam reporting. In addition, CRI / SSBRI#1 to 4 may correspond to the same resource group (one group).

[0239] 《Option 2-1-2》

[0240] The UE may also report other M resource groups that are different from the DL group-based resource groups. In this case, it may also mean that two CSI-RS / SSB resources of each of the other M resource groups can be sent (or supported to be sent) at the same time (refer to Fig.16 ).

[0241] Fig.16 This is a diagram showing an example of CSI reporting when DL group-based beam reporting and UL group-based beam reporting are performed separately (or using different resource groups). Fig.16 The following situation is shown: for DL ​​group-based beam reporting, CRI / SSBRI#1 and CRI / SSBRI#2 of a resource group are reported, and for UL group-based beam reporting, CRI / SSBRI#1 and CRI / SSBRI#2 of the first resource group and CRI / SSBRI#1 and CRI / SSBRI#2 of the second resource group are reported.

[0242] The number of UL group-based resource groups (eg, M) may be pre-specified in the specification, or may be set via a higher-level parameter related to the number of groups (eg, nrofReportedRSgroup).

[0243] [Option 2-2]

[0244] The UE may also report multiple (e.g., 2) CRI / SSBRIs for N groups in one reporting instance (e.g., single reporting instance). In this case, it may also mean that the UE is able to simultaneously receive (or support receiving) 2 CRI-RS / SSB resources of each group.

[0245] The number of groups (eg, N) may be pre-defined in the specification, or may be set by a higher-layer parameter related to the number of groups (eg, nrofReportedRSgroup). In addition, when N=1, option 2-1 may also be applied.

[0246] In addition, the UE may also use at least one CRI / SSBRI or resource group different from the CRI / SSBRI and resource group used for DL ​​group-based beam reporting for UL group-based beam reporting. For example, the UE may also use at least one of the following options 2-2-1 to 2-2-2.

[0247] 《Option 2-2-1》

[0248] The UE may also report one or more (e.g., two) CRI / SSBRIs different from the DL group-based CRI / SSBRI. In this case, it may also mean that the other two CSI-RS / SSB resources can be sent (or supported to be sent) simultaneously (see Fig.17 ).

[0249] 《Option 2-2-2》

[0250] The UE may also report other M resource groups that are different from the DL group-based resource groups. In this case, it may also mean that two CSI-RS / SSB resources of each of the other M resource groups can be sent (or supported to be sent) at the same time (refer to Fig.18 ).

[0251] The number of groups (e.g., N, M) may be pre-specified in the specification or may be set by a higher-level parameter related to the number of groups (e.g., nrofReportedRSgroup). In addition, in the case of M=1, option 2-2-1 may also be applied. In addition, the number of resource groups N for DL ​​group-based use and the number of resource groups M for UL group-based use may be set separately. Alternatively, N=M may also be used.

[0252] Fig.18 This is a diagram showing an example of CSI reporting when DL group-based beam reporting and UL group-based beam reporting are performed separately (or using different resource groups). Fig.18The following situation is shown: for DL ​​group-based beam reporting, CRI / SSBRI#1 and CRI / SSBRI#2 of the first to fourth resource groups are reported, and for UL group-based beam reporting, CRI / SSBRI#1 and CRI / SSBRI#2 of the first resource group, and CRI / SSBRI#1 and CRI / SSBRI#2 of the second resource group are reported.

[0253] For the above-mentioned options 2-1 and 2-2, at least one of the following Alt. 2-1 and Alt. 2-2 may be applied.

[0254] [Alt.2-1]

[0255] When one CSI resource set is configured, the two CSI-RS / SSB resources of each group may be selected from one CSI resource set.

[0256] [Alt.2-2]

[0257] When two CSI resource sets are configured, the two CSI-RS / SSB resources of each group may be selected from the two CSI resource sets, respectively.

[0258] In this case, two CSI resource sets may be set commonly for DL ​​beam reporting and UL beam reporting.

[0259] Alternatively, the two CSI resource sets may be separately set for DL ​​beam reporting and UL beam reporting. For example, two CSI resource sets are set for DL ​​beam reporting, and the other two CSI resource sets are set for UL beam reporting.

[0260] In this case, it may also be that: a resource set indicator (e.g., resource set indicator) field is included in the CSI report, and the resource set indicator means the same thing as the group-based beam report of Rel.17. For example, the value of the resource set indicator may also indicate the channel measurement resource set in which the CRI or SSBRI#1 of the first resource group is reported. For example, a 1-bit resource set indicator having a value of 0 or 1 represents the first or second channel measurement resource set, respectively, from which the CRI or SSBRI#1 of the first resource group is reported. All remaining resource groups (e.g., when there are other resource groups reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups may also be reported (or, selected) from the channel measurement resource set indicated by the resource set indicator.

[0261] Alternatively, two resource set indicator fields corresponding to DL beam reporting and UL beam reporting are included in the CSI report.

[0262] [change]

[0263] The CSI-RS / SSB resources used for UL group-based beam reporting may also be different from the CSI-RS / SSB resources used for DL ​​group-based beam reporting. For example, the resources used for UL may also be a subset of the resources used for DL.

[0264] For example, when X CSI-RS / SSB resources are set in a CSI resource set, all resources may be used in a DL group-based beam report and part of the resources may be used in a UL group-based beam report. Part of the resources may also be the first / last Y resources. Y may also be defined in the specification or may be set to the UE through a high-level parameter or the like.

[0265] Alternatively, for each CSI-RS / SSB resource, it may be explicitly set / indicated whether it is used for both DL group-based beam reporting and UL group-based beam reporting, only for DL ​​group-based beam reporting, or only for UL group-based beam reporting. In addition, two settings / indications of "beam reporting for both DL and UE group-based", "beam reporting for DL ​​group-based only", and "beam reporting for UL group-based only" may also be supported.

[0266] For DL ​​group-based beam reporting, the maximum number of CSI-RS / SSB resources in the CSI resource group may also be defined, and may also be set by higher layer parameters, etc. For example, the maximum number may also be the same as Rel.17, or higher. For example, the maximum number may also be 64 or 128. The maximum number may also be determined taking into account UE capabilities.

[0267] For UL group-based beam reporting, the maximum number of CSI-RS / SSB resources in the CSI resource set may be defined and may also be set through high-layer parameters, etc. For example, the maximum number may also be the same as the maximum number of DL group-based beam reporting, or less. For example, the maximum number may also be 32 or 64. The maximum number may also be determined taking into account UE capabilities.

[0268] For both DL group-based beam reporting and UL group-based beam reporting, the maximum number of CSI-RS / SSB resources in a CSI resource set may be defined, or may be set by higher layer parameters, etc. The maximum number may also be determined taking into account UE capabilities.

[0269] <Third Embodiment>

[0270] In the third embodiment, another example of group-based beam reporting related to UL transmission is described.

[0271] DL group-based beam reporting and UL group-based beam reporting may also be reported in different reporting instances. In a single reporting instance (eg, single reporting instance), the UE may also be controlled to perform only DL group-based beam reporting or only UL group-based beam reporting.

[0272] The UE may also utilize the methods of existing systems (eg, Rel. 15 / 16 / 17) to perform DL group-based beam reporting.

[0273] The UE may also perform DL group-based beam reporting using at least one of the following options 3-1 to 3-2.

[0274] [Option 3-1]

[0275] The UE may also report 2 CRI / SSBRI as UL group-based beam reports. In this case, it may also mean that the UE is capable of sending (or supports sending) 2 CRI-RS / SSB resources simultaneously (see Fig.19 ).

[0276] Fig.19 1 is a diagram showing an example of CSI reporting when UL group-based beam reporting is performed. Fig.19 : shows: the mapping order of CSI fields included in a report (eg, the nth CSI report #n) for group-based CSI-RSRP or SSBRI / RSRP reporting.

[0277] Here, the case where CRI / SSBRI#1 and CRI / SSBRI#2 are reported for UL group-based beam reporting is shown. In addition, CRI / SSBRI#1 to 2 may correspond to the same resource group (one group).

[0278] [Option 3-2]

[0279] The UE may report two CRI / SSBRIs for each of the M groups. In this case, it may also mean that the UE can simultaneously send (or support sending) two CSI-RS / SSB resources in each group (see Fig. 20 ).

[0280] exist Fig. 20 , it is shown that for UL group-based beam reporting, CRI / SSBRI#1 and CRI / SSBRI#2 are reported for the first resource group to the fourth resource group (here, M=4), respectively.

[0281] The number of groups (e.g., N) may be pre-defined in the specification or may be set by a higher-level parameter related to the number of groups (e.g., nrofReportedRSgroup). Option 3-1 may also be applied when M=1. In addition, the number of resource groups N for DL ​​group-based use and the number of resource groups M for UL group-based use may be set separately, or N=M.

[0282] For the above-mentioned options 3-1 and 3-2, at least one of the following Alt. 3-1 and Alt. 3-2 may be applied.

[0283] [Alt.3-1]

[0284] When one CSI resource set is configured, the two CSI-RS / SSB resources of each group may be selected from one CSI resource set.

[0285] [Alt.3-2]

[0286] When two CSI resource sets are configured, the two CSI-RS / SSB resources of each group may be selected from the two CSI resource sets, respectively.

[0287] In this case, two CSI resource sets may be set commonly for DL ​​beam reporting and UL beam reporting.

[0288] Alternatively, the two CSI resource sets may be separately set for DL ​​beam reporting and UL beam reporting. For example, two CSI resource sets are set for DL ​​beam reporting, and the other two CSI resource sets are set for UL beam reporting.

[0289] In this case, it may also be that: a resource set indicator (e.g., resource set indicator) field is included in the CSI report, and the resource set indicator means the same thing as the group-based beam report of Rel.17. For example, the value of the resource set indicator may also indicate the channel measurement resource set in which the CRI or SSBRI#1 of the first resource group is reported. For example, a 1-bit resource set indicator having a value of 0 or 1 represents the first or second channel measurement resource set, respectively, whereby the CRI or SSBRI#1 of the first resource group is reported. All remaining resource groups (e.g., when there are other resource groups reported) follow the same mapping order as the first resource group. For example, the CRI or SSBRI#1 of all remaining resource groups may also be reported (or, selected) from the channel measurement resource set indicated by the resource set indicator.

[0290] [change]

[0291] For UL group-based beam reporting, the maximum number of CSI-RS / SSB resources in the CSI resource set may also be defined, and may also be set by higher layer parameters, etc. For example, the maximum number may also be the same as the maximum number of DL group-based beam reporting, or may be less than the maximum number. For example, the maximum number may also be 32 or 64. The maximum number may also be determined in consideration of UE capabilities.

[0292] Multiple configurations of the first embodiment (at least one of options 1-1 to 1-4), the second embodiment (at least one of options 2-1 to 2-2), and the third embodiment (at least one of options 3-1 to 3-2) may also be supported. In this case, which option to apply may be determined based on at least one of a higher layer parameter set from the base station to the UE and the UE capability.

[0293] The first to third embodiments may also be applied in the case of a joint DL / UL TCI (or unified TCI) that supports the application of a common TCI state for DL ​​channels / signals and UL channels / signals. In this case, if the common / same CSI resource set and common / same beam reported for DL / UL are appropriate, the base station can appropriately utilize the joint DL / UL TCI. For separate DL / UL TCIs, or separate panels for DL / UL, separate / different CSI resource sets for DL ​​and UL, and separate / different beam reports are appropriate.

[0294] <Fourth Embodiment>

[0295] In the fourth embodiment, the setting (or activation / deactivation (enable / disable)) of UL group-based beam reporting / DL group-based beam reporting will be described.

[0296] The UE may also determine the setting (or activation / deactivation (enable / disable)) of UL group-based beam reporting / DL group-based beam reporting based on specific conditions / high-layer parameters.

[0297] For example, when the third embodiment is supported (for example, when DL group-based beam reporting and UL group-based number reporting are performed in different CSI reporting instances), the setting of UL group-based beam reporting / DL group-based beam reporting (or activation / deactivation (enable / disable)) can also be performed separately.

[0298] For example, DL group-based beam reporting can also be activated (enabled) through the high-level parameters of the existing system (e.g., groupBasedBeamReporting or groupBasedBeamReporting-r17). On the other hand, UL group-based beam reporting can also be activated through new high-level parameters (e.g., ULgroupBasedBeamReporting).

[0299] For the CSI report configuration (eg, CSI-report config), when new higher layer parameters are activated, the third embodiment may also be applied to UL group-based beam reporting.

[0300] When supporting the first embodiment (at least one of options 1-1 to 1-4) / the second embodiment (at least one of options 2-1 to 2-2) (for example, when DL group-based beam reporting and UL group-based beam reporting are performed in one CSI reporting instance), at least one of the following Alt.4-1 to Alt.4-2 may also be applied.

[0301] [Alt.4-1]

[0302] The setting (or activation / deactivation (enable / disable)) of UL group-based beam reporting / DL group-based beam reporting can also be performed separately. For example, DL group-based beam reporting can also be activated by a high-level parameter of the existing system (e.g., groupBasedBeamReporting or groupBasedBeamReporting-r17). On the other hand, UL group-based beam reporting can also be activated by a new high-level parameter (e.g., ULgroupBasedBeamReporting).

[0303] 《Scenario 4-1》

[0304] For CSI report configuration (e.g., CSI-report config), when the higher layer parameters for DL ​​group-based beam reporting become valid and the higher layer parameters for UL group-based beam reporting do not become valid, the DL group-based beam reporting of the existing system can also be applied.

[0305] 《Scenario 4-2》

[0306] For the CSI report configuration (for example, CSI-report config), the first embodiment / the second embodiment may be applied when the higher layer parameters for DL ​​group-based beam reporting become valid and the higher layer parameters for UL group-based beam reporting also become valid.

[0307] "Scenario 4-3"

[0308] For the CSI report setting (e.g., CSI-report config), when the higher-layer parameters for DL group-based beam reporting are not valid and the higher-layer parameters for UL group-based beam reporting are valid, the following Alt.4-1-a / Alt.4-1-b can also be applied.

[0309] · Alt.4-1-a

[0310] The third implementation mode can also be applied to perform UL group-based beam reporting. In this case, it can also mean that in addition to the first implementation mode / second implementation mode, the third implementation mode is also supported.

[0311] · Alt.4-1-b

[0312] The UE may not assume Scenario 4-3 (e.g., only the higher-layer parameters for UL group-based beam reporting are activated). That is, a structure that only performs UL group-based beam reporting may not be supported.

[0313] [Atl.4-2]

[0314] The first implementation mode (at least one of Option 1-1 to Option 1-4) / the second implementation mode (at least one of Option 2-1 to Option 2-2) can also be set (e.g., activated) by a new higher-layer parameter. When activated by this new higher-layer parameter, the UE can also apply the first implementation mode (at least one of Option 1-1 to Option 1-4) / the second implementation mode (at least one of Option 2-1 to Option 2-2).

[0315] <Change>

[0316] In the CSI reports of the first to fourth implementation modes, panel information can also be included. For example, the UE can also include information related to the panel index in the CSI report in DL group-based beam reporting / UL group-based beam reporting. The UE can report one panel index information for each reported CRI / SSBRI. Or, the UE reports one panel index information for each resource group to be reported.

[0317] <UE Capability Information>

[0318] In the above first to fourth implementation modes, the following UE capabilities (UEcapability) can also be set. In addition, the following UE capabilities can also be rewritten as parameters (e.g., higher-layer parameters) set from the network (e.g., base station) to the UE.

[0319] UE capability information related to whether UL group-based beam reporting is supported may also be defined.

[0320] UE capability information related to whether UL group-based beam reporting in the first embodiment (at least one of options 1-1 to 1-4), the second embodiment (at least one of options 2-1 to 2-2), and the third embodiment (at least one of options 3-1 to 3-2) is supported may also be defined.

[0321] The first to fourth embodiments may be configured to be applied to a UE that supports and reports at least one of the above-mentioned UE capabilities. Alternatively, the first to fourth embodiments may be configured to be applied to a UE that is configured from a network.

[0322] (Note)

[0323] The following inventions are added to one embodiment of the present disclosure.

[0324] [Note 1]

[0325] A base station comprises: a receiving unit, which receives resource information related to channel state information resources that can be used for UL group-based beam reporting; and a control unit, which performs a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report based on the resource information.

[0326] [Note 2]

[0327] A terminal as described in Note 1, wherein the control unit uses the same resource index of the same group included in a channel state information report to perform the UL group-based beam reporting and the DL group-based beam reporting.

[0328] [Note 3]

[0329] A terminal as described in Note 1 or Note 2, wherein the control unit uses at least one of different groups and different resource indexes contained in a channel state information report to perform the UL group-based beam reporting and the DL group-based beam reporting respectively.

[0330] [Note 4]

[0331] A terminal as described in any one of Notes 1 to 3, wherein the control unit uses different channel state information reports to perform the UL group-based beam reporting and the DL group-based beam reporting respectively.

[0332] (Wireless Communication System)

[0333] 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.

[0334] Fig.21 1 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.

[0335] 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.

[0336] 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.

[0337] 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)).

[0338] 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.

[0339] 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).

[0340] 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.

[0341] 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).

[0342] Multiple base stations 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.

[0343] 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.

[0344] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0345] 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.

[0346] 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.

[0347] 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.

[0348] 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.

[0349] 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.

[0350] 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.

[0351] 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 rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0352] 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.

[0353] 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 rewritten mutually.

[0354] 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.

[0355] 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.

[0356] 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.

[0357] 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.

[0358] 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).

[0359] (Base Station)

[0360] Fig. 22 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.

[0361] 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 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.

[0362] 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.

[0363] 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.

[0364] 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.

[0365] 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.

[0366] 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.

[0367] 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.

[0368] 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.

[0369] The sending and receiving unit 120 (the sending processing unit 1211 may also) performs processing on the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (for example, RLC retransmission control), the Medium Access Control (MAC) layer (for example, HARQ retransmission control), etc., for data and control information obtained from the control unit 110, and generates a bit string to be sent.

[0370] 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.

[0371] 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 .

[0372] 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 .

[0373] 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 (filtering 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.

[0374] 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.

[0375] 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.

[0376] 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 .

[0377] The transmitting and receiving unit 120 may also transmit resource information related to channel state information resources that can be used for UL group-based beam reporting. In addition, the transmitting and receiving unit 120 may also receive a channel state information report reported from the terminal, including at least one of a UL group-based beam report and a DL group-based beam report.

[0378] The control unit 110 may also indicate to the terminal resource information related to channel state information resources that can be used for UL group-based beam reporting.

[0379] (User Terminal)

[0380] Fig.23The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided in one or more pieces.

[0381] 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.

[0382] 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.

[0383] 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.

[0384] 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.

[0385] 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.

[0386] 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.

[0387] 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.

[0388] 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.

[0389] 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.

[0390] 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 (filtering 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.

[0391] 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.

[0392] The transmitting and receiving unit 220 (RF unit 222 ) may perform modulation, filter processing (filtering 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 .

[0393] On the other hand, the transmitting and receiving unit 220 (RF unit 222) may perform amplification, filter processing (filter processing), demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230.

[0394] 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 (filtering 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.

[0395] 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.

[0396] 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 .

[0397] The transmitting and receiving unit 220 may also receive resource information related to channel state information resources that can be used for UL group-based beam reporting.

[0398] The control unit 210 may also perform control so that, based on the resource information, a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report is performed.

[0399] The control unit 210 may also perform control so that the UL group-based beam reporting and the DL group-based beam reporting are performed using the same resource index of the same group included in one channel state information report.

[0400] The control unit 210 may also perform control so as to perform UL group-based beam reporting and DL group-based beam reporting respectively using at least one of different groups and different resource indexes included in one channel state information report.

[0401] The control unit 210 may also perform control so that different channel state information reports are used to perform UL group-based beam reporting and DL group-based beam reporting, respectively.

[0402] (Hardware Structure)

[0403] 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.

[0404] 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 thereof is not particularly limited.

[0405] 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.24 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0406] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be interchangeably used. 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.

[0407] 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.

[0408] 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.

[0409] 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.

[0410] 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.

[0411] 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.

[0412] 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.

[0413] 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 can 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. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0414] 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).

[0415] 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.

[0416] 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.

[0417] (Variation Example)

[0418] 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 rewritten 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.

[0419] 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).

[0420] 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.

[0421] 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.

[0422] 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.

[0423] 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 replaced with each other.

[0424] 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.

[0425] 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.

[0426] 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.

[0427] 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.

[0428] 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.

[0429] In addition, a long TTI (e.g., normal TTI, subframe, etc.) can also be rewritten as a TTI with a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) can also be rewritten as a TTI with a TTI length shorter than that of the long TTI and longer than 1 ms.

[0430] 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.

[0431] 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.

[0432] 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.

[0433] 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.

[0434] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0435] 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.

[0436] At least one of the set BWPs may be activated, and the UE may not assume that a specific signal / channel is transmitted or received outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0437] 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.

[0438] 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.

[0439] 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.

[0440] 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.

[0441] 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.

[0442] 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.

[0443] 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.

[0444] 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)).

[0445] 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).

[0446] 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).

[0447] 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.

[0448] 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.

[0449] 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.

[0450] 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.

[0451] 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.

[0452] 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.

[0453] In the present disclosure, the base station sending information to the terminal may also be rewritten as the base station instructing the terminal to control / operate based on the information.

[0454] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0455] 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.

[0456] At least one of the base station and the mobile station may also be referred to as a transmission device, a reception device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, a moving object body, etc.

[0457] The mobile body refers to a movable object, and the moving speed is arbitrary, and of course it also includes the situation where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, automatic two-wheeled vehicles (motorcycles), bicycles, connected cars, loading shovels, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trolleys, rickshaws, ships (ships and other watercrafts), airplanes, rockets, artificial satellites, drones, multi-rotor aircraft, quadcopters, balloons and objects carried on them, but are not limited to these. In addition, the mobile body can also be a mobile body that drives autonomously based on operating instructions.

[0458] The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., a drone, an autonomous 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 communication operations. 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.

[0459] Fig.25 1 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0460] The driving unit 41 is composed of at least one of an engine, a motor, or a combination of an engine and a motor. The steering unit 42 is composed of at least a steering wheel (also called a handlebar), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0461] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an ECU (Electronic Control Unit).

[0462] Signals from various sensors 50-58 include a current signal from a current sensor 50 for sensing the current of a motor, a speed signal of the front wheels 46 / rear wheels 47 obtained by a speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by other sensors 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of an accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of a brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of a shift lever 45 obtained by a shift lever sensor 57, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0463] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, a display, a television, and a radio for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 provides various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40 using information obtained from an external device via the communication module 60, etc.

[0464] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0465] The driving assistance system unit 64 is composed of various devices such as millimeter wave radar, light detection and ranging (LiDAR), camera, positioning locator (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., high-precision (High Definition (HD))) map, autonomous vehicle (Autonomous Vehicle (AV)) map, etc.), gyroscope system (e.g., inertial measurement unit (Inertial Measurement Unit (IMU))), inertial navigation unit (Inertial Navigation System (INS))), artificial intelligence (Artificial Intelligence (AI)) chip, AI processor, etc., for providing functions for preventing accidents before they happen or reducing the driver's driving load, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 sends and receives various information via the communication module 60 and realizes driving assistance function or autonomous driving function.

[0466] The communication module 60 can communicate with the microprocessor 61 and the components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 of the vehicle 40 via the communication port 63.

[0467] The communication module 60 can be controlled by the microprocessor 61 of the electronic control unit 49, and is a communication device that can communicate with an external device. For example, various information is sent and received with the external device via wireless communication. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it can also function as at least one of the base station 10 and user terminal 20).

[0468] The communication module 60 may also transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted through the communication module 60 may also include information based on the above input.

[0469] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device, and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 may also be referred to as an output unit for outputting information (for example, outputting information to a display, a speaker, etc. based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0470] In addition, the communication module 60 stores various information received from the external device in the memory 62 that can be used by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, and various sensors 50-58 of the vehicle 40 based on the information stored in the memory 62.

[0471] In addition, the base station in the present disclosure may also be rewritten as 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", "downlink", etc. may also be rewritten as terms corresponding to communication between terminals (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may also be rewritten as sidelink channels.

[0472] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0473] 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.

[0474] The various methods / implementations described in this disclosure may be used alone or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, timings, 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 method described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0475] 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 (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 based on these enhancements, corrections, production or regulations, etc. In addition, multiple systems can also be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0476] 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”.

[0477] 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.

[0478] The term "determining" used in the present 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".

[0479] 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)".

[0480] 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.

[0481] In addition, "judge (decide)" can also be rewritten as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0482] The “maximum transmit power” recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated maximum transmit power).

[0483] 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 rewritten as "access".

[0484] 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 being "connected" or "combined" to each other 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.

[0485] 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 manner as "different".

[0486] 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.

[0487] 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.

[0488] In the present disclosure, "below", "less than", "above", "more than", "equal to", etc. can also be rewritten with each other. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rewritten with each other, without being limited to the original degree, comparative degree, and superlative degree. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rewritten with each other as expressions attached with "ith" (i is an arbitrary integer) without being limited to the original degree, comparative degree, and superlative degree (for example, "highest" can also be rewritten with "i-th highest").

[0489] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may also be replaced by each other.

[0490] The invention involved in the present disclosure is 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.

[0491] This application is based on Japanese Patent Application No. 2022-082340 filed on May 19, 2022, the entire contents of which are expressly incorporated herein by reference.

Claims

1. A base station, comprising: a receiving unit, receiving resource information related to a channel state information resource that can be used for UL group-based beam reporting; and The control unit performs, based on the resource information, a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report.

2. The terminal according to claim 1, wherein: The control unit performs the UL group-based beam reporting and the DL group-based beam reporting using the same resource index of the same group included in one channel state information report.

3. The terminal according to claim 1, wherein: The control unit uses at least one of different groups and different resource indexes included in one channel state information report to perform the UL group-based beam reporting and the DL group-based beam reporting respectively.

4. The terminal according to claim 1, wherein: The control unit uses different channel state information reports to respectively perform the UL group-based beam reporting and the DL group-based beam reporting.

5. A wireless communication method of a terminal, comprising: The step of receiving resource information related to channel state information resources that can be used for UL group-based beam reporting; and Based on the resource information, a step of performing a channel state information report including at least one of a UL group-based beam report and a DL group-based beam report is performed.

6. A base station, comprising: A control unit, indicating to the terminal resource information related to channel state information resources that can be used for UL group-based beam reporting; and A receiving unit receives a channel state information report reported from the terminal based on the resource information, including at least one of a UL group-based beam report and a DL group-based beam report.

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