Terminal, radio communication method, and base station

Abstract

To appropriately perform CJT calibration.SOLUTION: A terminal according to an aspect of the present disclosure has: a transmission section that transmits capability information indicating the capability of simultaneous channel state information (CSI) calculation; a receiving section that receives report settings for a report of phase offset for coherent joint transmission calibration; and a control section that controls transmission of the report using CSI-RS resources in a number not exceeding the capability. The CSI-RS resources are counted in a period of duration from when periodic CSI-reference signal (RS) settings are set by an upper layer signaling until when the periodic CSI-RS settings are released.SELECTED DRAWING: Figure 2

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 technology]

[0002] In Universal Mobile Telecommunications System (UMTS) networks, Long Term Evolution (LTE) has been specified with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later) are also being considered. [Prior art documents] [Non-patent literature]

[0004] [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 [Problem to be solved by the invention]

[0005] In future wireless communication systems (e.g., NR), channel state information (CSI) reporting based on reference signal reception is being considered. Multiple Transmission / Reception Points (TRPs, Multi-TRP (MTRP)) or multiple panels (multi-panel) are also being considered for DL ​​transmission to a terminal (user terminal, User Equipment (UE)). Coherent joint transmission (CJT) using multiple TRPs / multi-panels is also being considered. Furthermore, the application of CJT to cases where the connection between TRPs is not ideal (e.g., non-ideal backhaul environments) is also being considered.

[0006] However, the settings for CJT calibration have not been sufficiently considered, which may hinder improvements in communication quality and communication throughput.

[0007] Therefore, one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that perform CJT calibration appropriately. [Means for solving the problem]

[0008] A terminal according to one embodiment of the present disclosure includes: a transmitter that transmits capability information indicating a capability of simultaneous channel state information (CSI) calculation; a receiver that receives a report configuration for reporting a phase offset for coherent joint transmission calibration; and a controller that controls transmission of the report using a number of CSI-RS resources that does not exceed the capability, wherein the CSI-RS resources are counted within a duration from when a periodic CSI-RS configuration is configured by higher layer signaling until the periodic CSI-RS configuration is released. [Effects of the Invention]

[0009] According to one aspect of the present disclosure, CJT calibration can be performed appropriately. [Brief explanation of the drawings]

[0010] [Figure 1] Figure 1 shows an example of inter-TRP synchronization through CJT calibration / pre-compensation. [Figure 2] FIG. 2 shows an example of an ARC according to the first embodiment. [Figure 3] FIG. 3 shows an example of the number of occupied CPUs according to the second embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 5] FIG. 5 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] (CSI report or reporting) In Rel.15 NR, a terminal (also referred to as a user terminal, User Equipment (UE), etc.) generates (also referred to as determining, calculating, estimating, measuring, etc.) channel state information (CSI) based on a reference signal (RS) (or a resource for the RS), and transmits (also referred to as reporting, feeding back, etc.) the generated CSI to a network (e.g., a base station). The CSI may be transmitted to the base station using, for example, an uplink control channel (e.g., a Physical Uplink Control Channel (PUCCH)) or an uplink shared channel (e.g., a Physical Uplink Shared Channel (PUSCH)).

[0012] The RS used to generate the CSI may be, for example, at least one of a Channel State Information Reference Signal (CSI-RS), a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, a Synchronization Signal (SS), a Demodulation Reference Signal (DMRS), etc.

[0013] The CSI-RS may include at least one of a Non-Zero Power (NZP) CSI-RS and a CSI-Interference Management (CSI-Interference Measurement, CSI-IM). The SS / PBCH block is a block including an SS and a PBCH (and corresponding DMRS), and may be referred to as an SS block (SSB). The SS may also include at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

[0014] The CSI may include at least one of a Channel Quality Indicator (CQI), a Precoding Matrix Indicator (PMI), a CSI-RS Resource Indicator (CRI), a SS / PBCH Block Resource Indicator (SSBRI, SSB index), a Layer Indicator (LI), a Rank Indicator (RI), Layer 1 Reference Signal Received Power (L1-RSRP), Reference Signal Received Quality (L1-RSRQ), Signal to Interference plus Noise Ratio (L1-SINR), and Signal to Noise Ratio (L1-SNR).

[0015] The UE may receive information about CSI reporting (report configuration information) and control CSI reporting based on the report configuration information. The report configuration information may be, for example, "CSI-ReportConfig" of an information element (IE) of Radio Resource Control (RRC).

[0016] The reporting configuration information (for example, the RRC IE "CSI-ReportConfig") may include, for example, at least one of the following: ◆ Information about the type of CSI report (report type information, e.g., RRC IE "reportConfigType") Information about one or more quantities of CSI to be reported (one or more CSI parameters) (report quantity information, e.g., RRC IE "reportQuantity") Information about the RS resources used to generate the quantity (CSI parameter) (resource information, for example, the RRC IE "CSI-ResourceConfigId") Information about the frequency domain to which CSI is reported (frequency domain information, e.g., RRC IE "reportFreqConfiguration")

[0017] For example, the report type information may indicate periodic CSI (P-CSI) reporting, aperiodic CSI (A-CSI) reporting, or semi-persistent CSI (SP-CSI) reporting.

[0018] Furthermore, the reporting amount information may specify a combination of at least one of the above CSI parameters (for example, CRI, RI, PMI, CQI, LI, L1-RSRP, etc.).

[0019] The resource information may also be IDs of resources for RSs, which may include, for example, non-zero power CSI-RS resources or SSBs and CSI-IM resources (e.g., zero power CSI-RS resources).

[0020] The frequency domain information may also indicate frequency granularity of CSI reporting. The frequency granularity may include, for example, a wideband and a subband. The wideband is the entire CSI reporting band. The wideband may be, for example, the entirety of a certain carrier (a component carrier (CC)), a cell, or a serving cell), or the entirety of a bandwidth part (BWP) within a certain carrier. The wideband may also be referred to as a CSI reporting band, the entire CSI reporting band, etc.

[0021] Furthermore, a subband is a part of a wideband and may be configured with one or more resource blocks (RBs or PRBs). The size of the subband may be determined according to the size of the BWP (the number of PRBs).

[0022] The frequency domain information may indicate whether wideband or subband PMI is to be reported (for example, the frequency domain information may include an RRC IE "pmi-FormatIndicator" used to determine whether wideband PMI reporting or subband PMI reporting is to be performed). The UE may determine the frequency granularity of the CSI report (i.e., whether wideband PMI reporting or subband PMI reporting is to be performed) based on at least one of the above-mentioned reporting amount information and frequency domain information.

[0023] When wideband PMI reporting is configured, one wideband PMI may be reported for the entire CSI reporting band, whereas when subband PMI reporting is configured, a single wideband indication i1 may be reported for the entire CSI reporting band, and one subband indication i2 (e.g., one subband indication for each subband) may be reported for each of one or more subbands within the entire CSI reporting band.

[0024] The UE performs channel estimation using the received RS to estimate a channel matrix H. The UE feeds back a performance management index (PMI) determined based on the estimated channel matrix.

[0025] The PMI may indicate a precoder matrix (also simply referred to as a precoder) that the UE considers appropriate for use in downlink (DL) transmissions to the UE. Each value of the PMI may correspond to one precoder matrix. A set of PMI values ​​may correspond to a set of different precoder matrices called a precoder codebook (also simply referred to as a codebook).

[0026] In the space domain, a CSI report may include one or more types of CSI. For example, the CSI may include at least one of a first type (Type 1 CSI) used for single-beam selection and a second type (Type 2 CSI) used for multi-beam selection. The single beam may be rephrased as a single layer, and the multi-beam may be rephrased as multiple beams. Furthermore, Type 1 CSI may not assume multi-user multiple input multiple output (MU-MIMO), while Type 2 CSI may assume multi-user MIMO.

[0027] The codebook may include a codebook for Type-1 CSI (also referred to as a Type-1 codebook, etc.) and a codebook for Type-2 CSI (also referred to as a Type-2 codebook, etc.). Furthermore, Type-1 CSI may include Type-1 single-panel CSI and Type-1 multi-panel CSI, and different codebooks (Type-1 single-panel codebook, Type-1 multi-panel codebook) may be defined for each.

[0028] The uplink control information (UCI) type may include at least one of a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), a scheduling request (SR), and CSI. The UCI may be carried by the PUCCH or the PUSCH.

[0029] In Rel.15 NR, UCI can contain one CSI part for wideband PMI feedback. CSI report #n contains PMI wideband information if reported.

[0030] In Rel.15 NR, UCI can include two CSI parts for subband PMI feedback. CSI Part 1 includes wideband PMI information. CSI Part 2 includes one wideband PMI and several subband PMIs. CSI Part 1 and CSI Part 2 are coded separately.

[0031] In Rel. 15 NR, a UE is configured by higher layers with N (N≧1) CSI reporting configuration report settings and M (M≧1) CSI resource configuration resource settings. For example, the CSI reporting configuration (CSI-ReportConfig) includes a channel measurement resource setting (resourcesForChannelMeasurement), a CSI-IM resource setting for interference (csi-IM-ResourceForInterference), an NZP-CSI-RS setting for interference (nzp-CSI-RS-ResourceForInterference), and a report quantity (reportQuantity). The channel measurement resource setting, the interference CSI-IM resource setting, and the interference NZP-CSI-RS setting are each associated with a CSI resource configuration (CSI-ResourceConfig, CSI-ResourceConfigId). The CSI resource configuration includes a list of CSI-RS resource sets (csi-RS-ResourceSetList, for example, an NZP-CSI-RS resource set or a CSI-IM resource set).

[0032] For both FR1 and FR2, evaluation and provision of CSI reporting for DL ​​multi-TRP and / or multi-panel transmissions is being considered to enable more dynamic channel / interference hypotheses for NCJT.

[0033] In the present disclosure, Type 1 and Type I may be interpreted as interchangeable. In the present disclosure, Type 2 and Type II may be interpreted as interchangeable.

[0034] In the present disclosure, CSI-RS, periodic CSI-RS (P-CSI-RS), semi-persistent CSI-RS (SP-CSI-RS), and aperiodic CSI-RS (AP-CSI-RS, A-CSI-RS) may be interchangeable. In the present disclosure, CSI-RS, periodic CSI reporting (P-CSI reporting), semi-persistent CSI reporting (SP-CSI reporting), and aperiodic CSI reporting (AP-CSI reporting, A-CSI reporting) may be interchangeable.

[0035] (CSI processing criteria: Physical layer procedures for data / Physical downlink shared channel related procedures / UE procedures for reporting CSI / CSI framework) ((Maximum number of simultaneous CSI calculations (number of CPUs), number of CPUs occupied by CSI calculations)) N CPU indicates the number of CSI processing units (CPUs). The UE determines the number of supported simultaneous CSI calculations (maximum number of simultaneous CSI calculations) N CPU Report / show / state:

[0036] ◆ simultaneousCSI-ReportsPerCC [in csi-ReportFramework in MIMO-ParametersPerBand]. MIMO-ParametersPerBand is used to convey MIMO-related parameters specific to a certain band. csi-ReportFramework indicates whether the UE supports the CSI reporting framework. csi-ReportFramework indicates whether the UE supports the CSI reporting framework. simultaneousCSI-ReportsPerCC indicates the number of CSI reports that the UE can simultaneously measure and process multiple reference signals within one CC of a band for which this capability is provided. CSI reports include periodic, semi-persistent, and aperiodic CSI, and any latency class and codebook type. CSI reports in simultaneousCSI-ReportsPerCC include beam reports and CSI reports.

[0037] ◆ simultaneousCSI-ReportsAllCC [in CA-ParametersNR]. simultaneousCSI-ReportsAllCC indicates whether the UE supports the CSI reporting framework and the number of CSI reports the UE can process simultaneously across all CCs (master cell group (MCG) and secondary cell group (SCG) in the case of NR-DC). CSI reports include periodic, semi-persistent, and aperiodic CSI, and any latency class and codebook type. CSI reports in simultaneousCSI-ReportsAllCC include beam reports and CSI reports. This parameter further constrains simultaneousCSI-ReportsPerCC and Phy-ParametersFRX-Diff in MIMO-ParametersPerBand for each band in a given band combination.

[0038] UE is N CPU If the UE supports N simultaneous CSI calculations, the UE may use NCPU If L CPUs are dedicated to the computation of CSI reports in a given OFDM symbol, the UE is considered to have N CPU -L free CPUs. N CPU On the same OFDM symbol where L CPUs are not occupied, N CSI reports start by occupying each CPU, and O of each CSI report n=0,...,N-1 of the N CSI reports CPU (n) (Number of occupied CPUs for CSI report n, number of consumed CPUs), the UE shall select the lowest priority (highest priority value Pri iCSI (y, k, c, s)), where 0≦M≦N, is not required to update (calculate, process) the NM requested CSI reports from Σ n=0 M-1 O CPU (n) ≦N CPU -L is the maximum value for which it holds.

[0039] UE is N CPU It is not assumed that the A-CSI trigger state will be configured with more than one report setting. The processing of the CSI report occupies some CPU in some symbols, as in the following processes 1, 2, a, and 3. The processing of the CSI report may be performed with 0, 1, or more (O CPU , number of occupied CPUs) (CPU occupancy rule).

[0040] ◆Process 1 In the case where CSI reporting is configured with CSI-ReportConfig with higher layer parameter reportQuantity set to 'none' and CSI-RS-ResourceSet with higher layer parameter trs-Info, CPU =0.

[0041] ◆Process 2 (Beam management) In a CSI report with CSI-ReportConfig with the higher layer parameter reportQuantity set to 'cri-RSRP', 'ssb-Index-RSRP', 'cri-SINR', 'ssb-Index-SINR', 'cri-RSRP-Capability[Set]Index', 'ssb-Index-RSRP-Capability[Set]Index', 'cri-SINR-Capability[Set]Index', 'ssb-Index-SINR-Capability[Set]Index', or 'none' (if CSI-RS-ResourceSet with the higher layer parameter trs-Info is not configured), CPU =1.

[0042] ◆Process a (TDCP report) For CSI reporting using CSI-ReportConfig with higher layer parameter reportQuantity set to 'tdcp' and the number of delays Y configured by higher layer parameter Y, CPU = (Y+1), where the value of X >= 1 is reported by the UE capabilities.

[0043] ◆Process 3 In a CSI report with CSI-ReportConfig with higher layer parameter reportQuantity set to 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-RI-CQI', or 'cri-RI-LI-PMI-CQI', CPU follows the procedure 3-x below: - Process 3-1 (case where the UE can use the maximum of its capabilities) max{μ PDCCH ,μ CSI-RS ,μ UL}≦3 and CSI reporting without PUSCH transmission with at least one of transport block and HARQ-ACK is triggered aperiodically when L=0 CPUs are occupied, the CSI corresponds to a single CSI with wideband frequency-granularity and 4 or less CSI-RS ports in a single resource without CRI reporting, the codebookType is set to 'typeI-SinglePanel', and the reportQuantity is set to 'cri-RI-CQI', CPU =N CPU μ PDCCH is the subcarrier spacing (SCS) setting of the PDCCH. μ CSI-RS is the SCS setting of CSI-RS. μ UL is the SCS setting of the UL BWP where the CSI report is sent. - Process 3-2 (NCJT CSI case) If a CSI-ReportConfig with codebookType set to 'typeI-SinglePanel' is configured and the corresponding CSI-RS resource set for channel measurements is configured with 2 resource groups and N resource pairs, then O CPU =X·N+M, where X is the number of CPUs occupied by a pair of CMRs according to the UE capability. The UE capability mTRP-CSI-numCPU-r17 indicates the number of CPUs occupied by a pair of CMRs for the NCJT CSI hypotheses. K S Of the NZP CSI-RS resource sets for channel measurements with K1 resources, M=M1+M2 for M1 and M2 resources associated with CRI values ​​for resource group 1 with K1 resources and resource group 2 with K2 resources. - Process 3-3 (CJT CSI case) A CSI-ReportConfig is configured with the higher layer parameter reportQuantity set to 'cri-RI-PMI-CQI' and the codebookType set to 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18', and the corresponding <N TRP If an NZP-CSI-RS-ResourceSet for channel measurement with ≤ 4 resources is configured, O CPU =X N TRP where the value of X >= 1 is reported by the UE capabilities.

[0044] - Process 3-4 (Doppler CSI case) If CSI-ReportConfig is configured with higher layer parameter reportQuantity set to 'cri-RI-PMI-CQI' and codebookType set to 'typeII-Doppler-r18' or 'typeII-Doppler-PortSelection-r18', then CPU Follow the steps below: --Processing 3-4-1 If the corresponding CSI-RS resource set for channel measurement is aperiodic (AP) and configured with K CSI-RS resources, then O CPU =8, and for K<12, O CPU = Y1·K, where Y1∈{1,2,3} is reported by the UE capability indication. --Process 3-4-2 If the corresponding CSI-RS resource set for channel measurement is periodic (P) or semi-persistent (SP) and configured with a single CSI-RS resource, then for N4=1, O CPU = 4, and for N4>1, O CPU= Y2·N4 ≥ 4, where N4 is set by the higher layer parameter N4 and Y2 ∈ {2 / 3,1,2,3} is reported by the UE capability indication.

[0045] - Process 3-5 (other cases) In all other cases, O CPU =K S It is. K S is the number of CSI-RS resources in the CSI-RS resource set for channel measurements.

[0046] ((CPU occupancy)) For CSI reporting with CSI-ReportConfig with higher layer parameter reportQuantity not set to 'none', one or more CPUs are occupied for the following number of OFDM symbols (CPU occupation duration): A P-CSI report or SP-CSI report occupies one or more CPUs from the first symbol of the earliest resource among multiple CSI-RS / CSI-IM / SSB resources for channel or interference measurement, where the last CSI-RS / CSI-IM / SSB occasion precedes the corresponding CSI reference resource, to the last symbol of the PUSCH / PUCCH configured to carry the report (CPU occupation duration 1). The P-CSI report or SP-CSI report excludes the first SP-CSI report on the PUSCH after the PDCCH that triggers the report. The time during which the P-CSI report or SP-CSI report occupies one or more CPUs may be referred to as CPU occupation duration 1. ◆An A-CSI report occupies one or more CPUs from the first symbol after the PDCCH that triggers the CSI report to the last symbol of the configured PUSCH / PUCCH that carries the report (CPU occupation duration 2). If the PDCCH reception includes two corresponding PDCCH candidates from two search space sets, the PDCCH candidate that ends later is used to determine the CPU occupation duration. The time during which the A-CSI report occupies one or more CPUs may be referred to as CPU occupation duration 2. The first SP-CSI report on the PUSCH after a PDCCH trigger occupies one or more CPUs from the first symbol after the PDCCH to the last symbol of the scheduled PUSCH carrying the report (CPU occupancy duration 3). If the PDCCH reception includes two corresponding PDCCH candidates from two search space sets, the PDCCH candidate that ends later is used to determine the CPU occupancy duration. The time during which the SP-CSI report occupies one or more CPUs may be referred to as CPU occupancy duration 3. ◆ The CSI-ReportConfig with the upper layer parameter codebookType set to 'typeII-Doppler-r18' or 'typeII-Doppler-PortSelection-r18' is configured, and the SP CSI report on the PUSCH is not later than the CSI reference resource. P occupies one or more CPUs from the first symbol of the th most recent consecutive P / SP CSI-RS occasion to the last symbol of the PUSCH carrying that report, where K P The values ​​∈{1,2,4} are indicated / reported by the UE capabilities.

[0047] CSI-RS Resource Counting (Active Resource Counting, ARC) In any slot, the UE does not expect to have more active CSI-RS ports or active CSI-RS resources in the active BWP than the number reported as its capabilities. NZP CSI-RS resources are active for a duration of time defined as follows: ◆ The duration for an A-CSI-RS starts from the end of the PDCCH containing the request and ends at the end of the scheduled PUSCH containing the report associated with that A-CSI-RS. ◆The duration for an SP-CSI-RS starts at the end of the time that the activation command applies and ends at the end of the time that the deactivation command applies. ◆The duration for a P-CSI-RS starts when that P-CSI-RS is configured by higher layer signaling and ends when that P-CSI-RS configuration is released.

[0048] If a CSI-RS resource is referenced N times by one or more CSI reporting settings that are not configured with the higher layer parameter csi-ReportSubConfigList, then that CSI-RS resource and the CSI-RS ports within that CSI-RS resource are counted N times.

[0049] In a channel measurement CSI-RS resource set configured with two resource groups and N resource pairs, if a CSI-RS resource is referenced X times by one of the M CSI-RS resources and at least one of one or two resource pairs, then that CSI-RS resource and the CSI-RS port within that CSI-RS resource will be counted X times.

[0050] In CSI-ReportConfig, which contains a list of L subsets provided by the higher layer parameter csi-ReportSubConfigList, if a CSI-RS resource is referenced by M subsets out of N subsets triggered for CSI reporting for AP-CSI-RS resources or out of L subsets configured for CSI reporting for P-CSI-RS resources or SP-CSI-RS resources, then that CSI-RS resource is counted M times and the CSI-RS ports in that CSI-RS resource are counted M times, max(Σ s=1 M P s , P) times, where P is the number of ports set by nrofPorts, and if the corresponding antenna port subset indicator [port-subsetIndicator] is set, P s is the number of CSI-RS ports in subset s derived from that indicator, otherwise, P s =P.

[0051] For a P-CSI-RS resource or an SP-CSI-RS resource in a CSI-RS resource set for channel measurement that is linked to a CSI-ReportConfig configured with the higher layer parameter codebookType set to 'typeII-Doppler-r18' or 'typeII-Doppler-PortSelection-r18', the CSI-RS resource and the CSI-RS port in the CSI-RS resource are P It is counted K times. P The values ​​∈{1,2,4} are indicated / reported by the UE capabilities.

[0052] A P-CSI-RS is always counted as an active CSI-RS, regardless of whether it is received on that OFDM symbol or not.

[0053] The UE reports UE capability information (codebookParameter) related to the codebook of the CSI report for each band.

[0054] The codebookParameter indicates the codebook (type) and corresponding parameters supported by the UE. Reporting of parameters corresponding to Type 1 Single Panel is mandatory. Reporting of parameters corresponding to Type 1 Multi Panel, Type 2, and Type 2 Port Selection is optional. The parameters may include at least one of maxNumberTxPortsPerResource, maxNumberResourcesPerBand, and totalNumberTxPortsPerBand. maxNumberTxPortsPerResource indicates the maximum number of transmit ports in one resource. maxNumberResourcesPerBand indicates the maximum number of resources that can be used simultaneously across all CCs in one band. totalNumberTxPortsPerBand indicates the maximum number of transmit ports that can be used simultaneously across all CCs in one band.

[0055] In this disclosure, CPU occupancy, CPU occupancy rate, CPU occupancy time, number of occupied CPUs, number of CPUs, O CPU The number of occupied CPUs and the number of consumed CPUs may be read interchangeably.

[0056] In the present disclosure, the number of processes / calculations, the number of CSI reports, the number of CSI calculations, the number of simultaneous CSI calculations, the number of CSI reports that can be measured and processed simultaneously, the number of CSI processes, the number of CPUs, and the number (count) of CSI-RS resources / CSI-RS ports calculated / measured / processed for CSI may be read interchangeably.

[0057] In the present disclosure, CSI-RS resources and active resources may be interchangeable. In the present disclosure, CSI-RS resource counting and active resource counting (ARC) may be interchangeable. In the present disclosure, the number of CSI-RS resources and the number of active resources may be interchangeable.

[0058] (CSI reference resource definition: Physical layer procedures for data / Physical downlink shared channel related procedures / UE procedures for reporting CSI / CSI) ((CSI Reference Resources)) The CSI reference resource for the serving cell is defined as follows: ◆ In the frequency domain, a CSI reference resource is defined by a group of multiple DL PRBs corresponding to the band to which the derived CSI pertains. In the time domain, the CSI reference resource for CSI reporting in UL slot n' is a single DL slot nn CSI_ref -K offset 2 μ_DL / 2 μ_Koffset where K offset is a parameter set by the upper layer, and μ_Koffset is the offset μ_DL is the subcarrier spacing setting for DL, with a value of 0 in frequency range (FR) 1. μ_DL is the subcarrier spacing setting for DL. -◆The following procedures are defined for P / SP-CSI reporting: If a single CSI-RS / SSB resource is configured for channel measurement, CSI_ref is 4·2, so that it corresponds to an enabled DL slot. μ_DL This is the minimum value above. If multiple CSI-RS / SSB resources are configured for channel measurement, CSI_ref is 5·2, so that it corresponds to a valid DL slot. μ_DL This is the minimum value above. - In AP-CSI reporting, if the UE is instructed by DCI to report CSI in the same slot as the CSI request, n CSI_ref is a value such that the reference resource is in the same valid DL slot as the corresponding CSI request, otherwise, n CSI_ref is slot nn CSI_ref corresponds to a valid DL slot, symb slot ) where Z' corresponds to the delay requirement. N symb slot is the number of symbols in the slot. -◆If CSI-RS / CSI-IM or SSB of P or SP is used for channel / interference measurement, the UE is not expected to measure the channel / interference for CSI-RS / CSI-IM / SSB whose last OFDM symbol is received Z' symbols before the transmission time of the first OFDM symbol of the AP-CSI report.

[0059] A slot in the serving cell is considered a valid DL slot if it contains at least a DL or flexible symbol configured by higher layers and the slot is not within a measurement gap configured for the UE.

[0060] ((CSI reporting conditions)) After a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE reports a CSI report only if it receives at least one CSI-RS transmission occasion for channel measurement and a CSI-RS / CSI-IM occasion for interference measurement when the CSI reference resource is not later than the CSI reference resource. Otherwise, the UE drops the report.

[0061] For a CSI reporting configuration (CSI-ReportConfig) that includes a list of sub-configurations provided by csi-ReportSubConfigList, after CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE reports a CSI report including one or more sub-reports only after receiving at least one CSI-RS transmission occasion for channel measurement and one CSI-RS / CSI-IM occasion for interference measurement for each sub-configuration not later than the CSI reference resource. Otherwise, the UE drops the report. Here, the sub-configuration is the one activated / triggered for SP-CSI reporting.

[0062] For a CSI-ReportConfig configured with two resource groups and N resource pairs for channel measurement in the corresponding CSI-RS resource set, after a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE reports a CSI report only if the UE has received at least one CSI-RS transmission occasion for each of the CSI-RS resources in the corresponding CSI-RS resource set for channel measurement not later than the CSI reference resource and within the same DRX active time if DRX is configured. Otherwise, the UE drops the report.

[0063] For a CSI-ReportConfig configured with codebookType set to 'typeII-CJT-r18' or 'typeII-CJT-PortSelection-r18', after a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE reports a CSI report only if it has received at least one CSI-RS transmission occasion for each of the CSI-RS resources in the corresponding CSI-RS resource set for channel measurement and one CSI-RS / CSI-IM occasion for the CSI-RS / CSI-IM resources in the corresponding resource set for interference measurement, not later than the CSI reference resource, and within the same DRX active time if DRX is configured. Otherwise, the UE drops the report.

[0064] For a CSI-ReportConfig configured with codebookType set to 'typeII-Doppler-r18' or 'typeII-Doppler-PortSelection-r18', after a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE may transmit at least one consecutive CSI-RS transmission occasion aperiodically for each CSI-RS resource in the corresponding CSI-RS resource set for channel measurements, or at least K consecutive CSI-RS transmission occasions periodically or semi-persistently for each CSI-RS resource in the corresponding CSI-RS resource set for channel measurements, when the UE is not later than the CSI reference resource and within the same DRX active time if DRX is configured. pThe UE reports a CSI report only if it receives K consecutive multiple CSI-RS transmission occasions and one CSI-RS / CSI-IM occasion for the CSI-RS / CSI-IM resources in the corresponding resource set for interference measurement. Otherwise, the UE drops the report. p The values ​​∈{1,2,4} are indicated by the UE capabilities.

[0065] For a CSI-ReportConfig configured with the higher layer parameter reportQuantity set to 'tdcp', after a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE shall check the K of the corresponding CSI-RS resource setting for channel measurements when it is not later than the CSI reference resource and within the same DRX active time if DRX is configured. TRS The UE reports a CSI report only if it has received at least one CSI-RS transmission occasion for each CSI-RS resource in the CSI-RS resource set, otherwise it drops the report.

[0066] If DRX is configured, the UE reports a CSI report only if it receives at least one CSI-RS transmission occasion for channel measurement and one CSI-RS / CSI-IM occasion for interference measurement not later than the CSI reference resource and within the DRX active time, otherwise it drops the report.

[0067] For a CSI reporting configuration in CSI-ReportConfig associated with higher layer parameter reportQuantity having at least 'RI' on a serving cell with activated cell DTX, the UE shall report a CSI report only if the UE receives at least one CSI-RS transmission occasion for each periodic CSI-RS resource or each semi-persistent CSI-RS resource for channel / interference measurement not later than the CSI reference resource and within the active period of the cell DTX. Otherwise, the UE shall drop the CSI report.

[0068] As described above, a plurality of UE behaviors are defined for a plurality of values ​​of at least one setting of the report / resource setting method, the codebook type, and the report quantity (reportQuantity).

[0069] (Multi-TRP) In NR, one or more Transmission / Reception Points (TRPs) (multi-TRP) are considered to perform DL transmission to a UE using one or more panels (multi-panel), and a UE is considered to perform UL transmission to one or more TRPs.

[0070] Note that multiple TRPs may correspond to the same cell identifier (ID), different cell IDs, different TCI state positions / orders, different CORESET pools, or different SRS resource sets. The cell ID may be a physical cell ID (e.g., PCI) or a virtual cell ID.

[0071] In the case where only one TRP (TRP1) of the multi-TRPs transmits to the UE (this may be called single mode, single TRP, etc.), TRP1 transmits both control signals (PDCCH) and data signals (PDSCH) to the UE.

[0072] In the present disclosure, the single TRP mode may refer to the mode when the multi-TRP (mode) is not set.

[0073] In a case where only one TRP among the multiple TRPs transmits a control signal to the UE and the TRP transmits a data signal (this may be called a single master mode), the UE receives each PDSCH transmitted from the TRP based on one Downlink Control Information (DCI).

[0074] In a case where each of the multiple TRPs transmits a separate control signal to the UE and the multiple TRPs transmit data signals (which may be called a multi-master mode), a first control signal (DCI) may be transmitted from TRP1 and a second control signal (DCI) may be transmitted from TRP2. The UE receives each PDSCH transmitted from the multiple TRPs based on these DCIs.

[0075] When multiple PDSCHs from multiple TRPs (which may be referred to as multiple PDSCHs) are scheduled using one DCI, the DCI may be referred to as a single DCI (S-DCI, single PDCCH). Also, when multiple PDSCHs from multiple TRPs are scheduled using multiple DCIs, these multiple DCIs may be referred to as multiple DCIs (M-DCI, multiple PDCCHs).

[0076] Each TRP in a multi-TRP may transmit a different transport block (TB) / code word (CW) / different layer, or each TRP in a multi-TRP may transmit the same TB / CW / layer.

[0077] Non-Coherent Joint Transmission (NCJT) is being considered as one form of multi-TRP transmission. In NCJT, for example, TRP1 performs modulation mapping and layer mapping on a first codeword to transmit a first PDSCH using a first number of layers (e.g., two layers) with a first precoding. TRP2 performs modulation mapping and layer mapping on a second codeword to transmit a second PDSCH using a second number of layers (e.g., two layers) with a second precoding.

[0078] Note that multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined as partially or completely overlapping in at least one of the time and frequency domains, i.e., a first PDSCH from a first TRP and a second PDSCH from a second TRP may overlap in at least one of the time and frequency resources.

[0079] The first PDSCH and the second PDSCH may be assumed to be not quasi-co-located (Quasi-Co-Location (QCL)). Reception of multiple PDSCHs may be interpreted as simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., QCL type D).

[0080] In URLLC for multiple TRPs, it is considered that PDSCH (transport block (TB) or codeword (CW)) repetition across multiple TRPs is supported. Repetition schemes (URLLC schemes, e.g., schemes 1, 2a, 2b, 3, and 4) across multiple TRPs in the frequency domain, layer (spatial) domain, or time domain are supported. In scheme 1, multiple PDSCHs from multiple TRPs are space division multiplexed (SDM). In schemes 2a and 2b, PDSCHs from multiple TRPs are frequency division multiplexed (FDM). In scheme 2a, the redundancy version (RV) is the same for multiple TRPs. In scheme 2b, the RVs may be the same or different for multiple TRPs. In schemes 3 and 4, multiple PDSCHs from multiple TRPs are time division multiplexed (TDM). In scheme 3, multiple PDSCHs from multiple TRPs are transmitted in one slot. In scheme 4, multiple PDSCHs from multiple TRPs are transmitted in different slots.

[0081] Such a multi-TRP scenario allows for more flexible transmission control using good quality channels.

[0082] An NCJT using multiple TRPs / panels may use a high rank. To support ideal and non-ideal backhaul between multiple TRPs, both single DCI (single PDCCH) and multiple DCI (multiple PDCCH) may be supported. For both single DCI and multi-DCI, the maximum number of TRPs may be two.

[0083] For single PDCCH design (mainly for ideal backhaul), TCI extensions are being considered. Each TCI codepoint in the DCI may correspond to a TCI state of 1 or 2. The TCI field size may be the same as that in Rel. 15.

[0084] For PDCCH / CORESET specified in Rel. 15, one TCI state without CORESETPoolIndex (which may also be called TRP information (TRP Info)) is set to one CORESET.

[0085] Regarding the enhancement of PDCCH / CORESET specified in Rel. 16, in multi-TRP based on multi-DCI, a CORESET pool index is set for each CORESET.

[0086] (Joint Transmission) Joint transmission (JT) may refer to simultaneous data transmission from multiple points (eg, TRPs) to a single UE.

[0087] Rel. 17 supports non-coherent joint transmission (NCJT) from two TRPs. The PDSCHs from the two TRPs may be independently precoded and independently decoded. The frequency resources may be non-overlapping, partially overlapping, or fully overlapping. When overlap occurs, the PDSCH from one TRP may interfere with the PDSCH from the other TRP.

[0088] Rel. 18 is considering supporting coherent joint transmission (CJT, mTRP CJT) using up to four TRPs. Data from four TRPs may be coherently precoded and transmitted to a UE on the same time-frequency resource. For example, the same precoding matrix may be used to consider channels from four TRPs. "Coherent" may mean that there is a certain relationship between the phases of multiple received signals. Using four-TRP joint precoding, signal quality may be improved and there may be no interference between the four TRPs. Data may only be subject to interference outside the four TRPs.

[0089] In Rel. 18, a UE may receive up to four DL-RSs (eg, TRSs) from each of up to four CJT-TRPs (multiple TRPs #1 to #4 that support CJT).

[0090] (CJT calibration) Rel. 19 considers performing CJT not only in an ideal environment where there are no delay (time), Doppler (frequency), or phase differences between TRPs, but also in a non-ideal environment (non-ideal backhaul) where there are delay, Doppler, or phase differences between TRPs, and measuring and reporting the time difference and frequency / phase offset between TRPs. As shown in Figure 1, a mechanism may be supported in which the UE measures the delay, Doppler, or phase differences (e.g., offsets) between TRPs and reports them to the base station, and the base station calibrates or precompensates for the differences (e.g., UE-assisted calibration). Reporting the delay, Doppler, or phase differences (e.g., offsets) between TRPs may be referred to as CJT calibration [CSI] reporting. Up to three TRPs (out of a maximum of four TRPs) may be subject to precompensation.

[0091] In extending UE reporting for CJT / DL mTRP deployment under non-ideal synchronization and backhaul, measurement and reporting of time misalignment and frequency / phase offset between TRPs is considered, assuming existing CSI-RS design and standalone aperiodic reporting on PUSCH.

[0092] To perform CJT in situations where the signals / channels between the TRPs are not synchronized, the UE-assisted calibration may synchronize the signals / channels between the TRPs by applying pre-compensation for at least one of the following: ◆CJT PDSCH. ◆NZP-CSI-RS for CJT CSI codebook reporting (CJT CSI-RS).

[0093] Regarding CJT calibration reports, the following is being considered: ◆ In the Rel.19 AP standalone CJT calibration report, the N that is set when the report quantity (ReportQuantity) is 'cjtc-Dd' (delay offset (DO) Doffset and delay offset determination result d) or 'cjtc-F' (frequency offset (FO)) TRP Regarding the applicable types of resources / resource sets of NZP CSI-RS, TRP A P-TRS resource set is used for each of the NZP CSI-RS resource sets. The minimum allowed number of TRS resource sets is extended to 4. That is, P-TRS is repurposed for CMR for delay / frequency offset reporting. ◆ In the Rel.19 AP standalone CJT calibration report, the N that is set when the report quantity (ReportQuantity) is 'cjtc-P' (DL / UL phase offset (PO)) TRPFor applicable types of resources / resource sets of NZP CSI-RS, single-port CSI-RS for CSI is used, i.e., single-port CSI-RS for CSI is repurposed for CMR for phase offset reporting. Assuming TDD reference, beamformed CMR is considered.

[0094] The type / quantity of reporting in the CJT calibration report can be represented by the following parameters: ◆D n,offset (or Dnoffset or Dn or Doffset, n=0,1,...,N TRP −1, n ≠ nref) is a B-bit indicator representing the delay offset associated with the nth CSI-RS resource / resource set. For a reference CSI-RS resource / resource set nref, D nref,offset The value of is assumed to be 0 and is not reported. ◆d n (or dn or d, n=0,1,...,N TRP −1, n≠nref) is a 1-bit indicator associated with the nth CSI-RS resource / resource set, indicating whether the measured delay offset + delay spread is within a predefined range / interval. ◆FO n (or FOn or FO, n=0,1,...,N TRP -1, n ≠ nref) represents the measured frequency offset associated with the nth CSI-RS resource / resource set with respect to the reference CSI-RS resource / resource set nref. nref The value of is assumed to be 0 and is not reported. ◆Φ n,σ (or Φn, σ or PO, n=0,1,...,N TRP −1, n ≠ nref, σ = 0, 1, ..., Σ −1) represents the measured phase offset between the nth CSI-RS resource / resource set and the reference CSI-RS resource / resource set nref for the σth frequency unit.

[0095] In other words, the following is considered regarding CMR for CJT calibration: ◆Periodic TRS resource set per TRP (i.e., N TRP (Number of TRPs) P-TRS resource sets are supported. ◆ NZP CSI-RS (i.e., NZP CSI-RS) of at least one port (not TRS) per TRP for reporting phase offsets TRP NZP CSI-RS resources / resource sets) are supported. 1-port NZP CSI-RS is assumed to be beamformed (UE specific).

[0096] Regarding UCI coding in CJT calibration reports, the following is considered: ◆ In Rel.19 AP standalone CJT calibration reporting for a given CJT calibration report of one or more CJT calibration report types, nref is selected by the UE and reported as part of the CJT calibration report. CJT calibration report types refer to Doffset / d reporting, FO reporting, and TDD PO reporting. That is, nref (reference CSI-RS resource) is selected and reported by the UE.

[0097] In Rel.19 AP standalone CJT calibration reporting, in addition to reporting one type of CJT calibration report in one report, at least {(Dn,offset,dn),n=0,1,...,NTRP-1,n≠nref1} and {FOn,n=0,1,...,NTRP-1,n≠nref2} in one report are supported. nref1 and nref2 are selected and indicated / reported independently by the UE. One-part UCI is used.

[0098] In other words, the following is considered regarding UCI encoding: ◆One report contains one or more types. One or more types are supported, including any of the following types: ◆Delay offset only. ◆Frequency offset only. ◆Phase offset only. ◆ Delay offset and frequency offset.

[0099] The type of one CJT calibration [CSI for] report may not be limited to the above-mentioned types, and may include at least one of a type that reports a delay offset and a phase offset, a type that reports a frequency offset and a phase offset, and a type that reports a delay offset, a frequency offset, and a phase offset.

[0100] Regarding phase offset reporting, the following is being considered: ◆Wideband (WB) reporting is supported. Regarding SRS settings / port association, the following are being considered: -◆The SRS resource is assumed to be an SRS resource with usage 'antennaSwitching' (AS). - At least one SRS resource can be configured, i.e., Q=1 is supported. -◆P out of the total xQ ports SRS (e.g., 1) SRS port.

[0101] For aperiodic standalone CJT calibration reporting, N is set TRP Given NZP CSI-RS resource sets and N selected resources / resource sets, {Φ n,σ ,N=0,1,...,N-1,n≠nref,σ=0,1,...,Σ-1} is considered to be supported. n,σdenotes the measured offset between the nth CSI-RS resource / resource set and the reference CSI-RS resource set nref for the σth frequency unit, where: ◆Σ=1 is supported. ◆ValueΦ n,σ -A Φ and A Φ A phase quantized uniformly between 0 and A Φ , which indicates a phase uniformly quantized between

[0102] For aperiodic standalone CJT calibration reporting, when ReportQuantity is 'cjtc-P' (DL / UL phase offset), the following is considered: For antenna switching xTyR, the number of configured associated SRS resources (Q) is at least supported as Q=1, where the configured associated SRS resources are selected from all y / x SRS resources and all configured resource sets. ◆ Regarding the method of determining the SRS port corresponding to the "reference UE antenna port", P selected from all ports from the configured Q SRS resources is SRS = 1 SRS port supported.

[0103] (Issues) In the Rel.19 aperiodic standalone CJT calibration report, the timeline / number of occupied CPUs (O CPU Regarding Active Resource Counting (ARC), the following is being considered:

[0104] ◆Timeline: [For all delay offset (DO) / frequency offset (FO) / phase offset (PO) reporting] The timeline from Rel.18 TDCP is used.

[0105] ◆ARC: The ARC from Rel.18 TDCP will be diverted for DO / FO reporting.

[0106] ◆If the report quantity (reportQuantity) is 'cjtc-Dd' (delay offset Doffset and delay offset determination result d, Doffset+d) or 'cjtc-F' (frequency offset, FO), the ARC from Rel.18 TDCP is diverted and O CPU =X N TRP where, for each CJT calibration report type, X≧1 is defined based on the UE capabilities and is determined by the UE.

[0107] ◆If reportQuantity is 'cjtc-Dd-F' (joint report of Doffset+d and FO), the timeline and ARC from Rel.18 TDCP are used, and O CPU =2X N TRP where, for each CJT calibration report type, X≧1 is defined based on the UE capabilities and is determined by the UE.

[0108] The following points can be considered: ◆Issue 1: In the PO reports [for both wideband and subband], the rules / procedures regarding ARC (determining the number of active resources) have not been sufficiently considered. ◆Issue 2: In the PO report [both wideband and subband], the number of occupied CPUs is O CPU The rules / procedures for [decision-making] have not been adequately considered.

[0109] As such, the rules and procedures for CJT calibration reporting have not been sufficiently considered. If the rules and procedures are not sufficiently considered, there is a risk that communication quality and throughput will deteriorate.

[0110] Therefore, the present inventors have studied the rules / procedures for CJT calibration reporting and have conceived the following embodiments.

[0111] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0112] (Various reading changes) In this disclosure, words enclosed in "()" in a sentence may indicate an explanation of the immediately preceding wording (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc. Also, in this disclosure, words enclosed in "[ ]" in a sentence may be interpreted including the meaning of the entire sentence, or may be interpreted excluding the meaning of the entire sentence (ignoring the meaning of the entire sentence). Note that "()" and "[ ]" may also be used for purposes / meanings other than those mentioned above.

[0113] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0114] In the present disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be interchangeable. In the present disclosure, terms such as support, control, controllable, operate, and operate may be interchangeable.

[0115] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0116] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages), or a combination thereof.

[0117] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0118] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0119] In the present disclosure, ceil(x), ceiling function, and ceiling function may be interchangeable. In the present disclosure, floor(x), floor function, and floor function may be interchangeable. In the present disclosure, sqrt(x), square root of x, and root x may be interchangeable. In the present disclosure, x mod y, mod(x,y), mod function, and modulo operation may be interchangeable. In the present disclosure, Σ i=MM+N-1 f(i),Σ i=M M+N-1 f i , f(i) or f for i=M, M+1,..., M+N-1 i summation of f(M)+f(M+1)+...+f(M+N-1), f M +f M+1 +...+f M+N-1 , may be read interchangeably. C(n,k) is the number of combinations of k values ​​selected from n values ​​(combinatorial coefficient), binomial coefficients, n C k , C n k , may be read as interchangeable. In the present disclosure, x / / y and floor(x / y) may be read as interchangeable.

[0120] In this disclosure, A b , A_b, Ab, and A with b added to the bottom right may be read interchangeably. c , A^c, and the notation of A with c added to the upper right may be read interchangeably. b c , A_b^c, and the notation in which b is added to the bottom right of A and c is added to the top right of A may be read interchangeably. ~ may be expressed by adding 〜 to the x, or may be referred to as x tilde. - may be represented by placing a - on top of the x, or may be referred to as an x-bar. ^ may be represented by placing a ^ above the x, or may be called an x-hat.

[0121] In the present disclosure, FR may be, for example, at least one of FR1, FR2, FR2-1, FR2-2, FR3, sub-terahertz, and terahertz. In the present disclosure, the frequency range corresponding to FR1 may be 410-7125 MHz. In the present disclosure, FR2 may include FR2-1 and FR2-2, and the frequency range corresponding to FR2-1 may be 24250-52600 MHz, and the frequency range corresponding to FR2-1 may be 52600-71000 MHz.

[0122] The following abbreviations may be used in this disclosure: ◆FDM: frequency division multiplexing ◆TDM: time division multiplexing ◆CDM:code division multiplexing

[0123] In the present disclosure, the terms indicate, report, and select may be read interchangeably.

[0124] In the present disclosure, the terms TRP, CMR, NZP CSI-RS resource, NZP CSI-RS resource set, group of multiple NZP CSI-RS resources (multiple NZP CSI-RS resources), group of multiple NZP CSI-RS resource sets (multiple NZP CSI-RS resource sets), panel, group, set, CRI, resource, CSI-RS, TRS, and NZP CSI-RS resource set with TRS information (TRS-Info) may be read interchangeably.

[0125] In the present disclosure, a certain NZP-CSI-RS resource may correspond to a certain TRP, i.e., the NZP-CSI-RS resource and the TRP may be associated with each other.

[0126] In the present disclosure, DL-RS resources, NZP-CSI-RS resources, TRS resources, resources, RS resources, CSI-RS resources, CSI-RS occasions, CSI-IM resources, and CSI-IM occasions may be read interchangeably.

[0127] In the present disclosure, per resource, resource unit, per TRP, and TRP unit may be read interchangeably.

[0128] In the present disclosure, the terms resource and resource set may be used interchangeably.

[0129] In the present disclosure, frequency, Doppler shift, and Doppler may be read interchangeably.

[0130] In the present disclosure, the terms reporting amount, reporting content, reporting type, type of reporting content, CJT calibration reporting type, and reporting at least one of delay offset, frequency offset, and phase offset may be read interchangeably.

[0131] In the present disclosure, the terms CJT calibration report, and report of at least one of delay offset, frequency offset, and phase offset may be read interchangeably.

[0132] In the present disclosure, UE-assisted CJT calibration, CJT calibration, CJT calibration report, CSI report for CJT calibration, CJT CSI, CJT CSI report, and CSI report may be read interchangeably.

[0133] In the present disclosure, the CJT calibration report being configured, the UE being configured with the CJT calibration report, the UE receiving the CJT calibration report configuration, the CJT calibration report being configured for the CSI report, the UE receiving the CJT calibration report configuration for the CSI report, etc. may be read interchangeably.

[0134] In the present disclosure, delay, time, phase, frequency, and Doppler shift may be read interchangeably.

[0135] In the present disclosure, CSI-RS resources, P / SP / A-CSI-RS resources, NZP CSI-RS resources, CMR, active [CSI-RS] resources, active [CSI-RS] ports, and CSI-RS ports within CSI-RS resources may be read as interchangeable.

[0136] In the present disclosure, "xy," "x·y," "x×y," "x*y," and "multiplying x by y" may be read interchangeably.

[0137] (Wireless communication method) <Embodiment 1> This embodiment relates to Issue 1 (Rules Regarding ARC).

[0138] When PO CSI reporting is configured, how to count the number of CSI-RS active resources (the rules for ARC, the method for counting active resources) may be the same regardless of whether the frequency domain reporting granularity is wideband or subband. In the case where subband PO reporting is configured, the number of times at least one element of a CSI-RS resource and a CSI-RS port within that CSI-RS resource is counted may be the same as the number of times that element is counted when wideband PO reporting is configured.

[0139] According to this embodiment, the calculation of the maximum number of active resources in the NW can be simplified.

[0140] This embodiment may be based on option 1 below.

[0141] <<Option 1>> The rules for ARC may be based on at least one of several options 1-x below.

[0142] <<<Option 1-1>>> A CMR is active for a duration that, if it is a periodic CSI-RS, begins when the periodic CSI-RS is configured by higher layer signaling and ends when the periodic CSI-RS configuration is released.

[0143] 2, in any slot, the UE may not expect the number of CSI-RS resources (active resources) counted in a duration to exceed its capacity (i.e., be greater than the number based on its capacity). In other words, in any slot, the number of CSI-RS resources (active resources) counted in a duration may not exceed its capacity (may be less than the number based on its capacity).

[0144] <<<Option 1-2>>> If a CSI-RS resource is referenced N times by one or more CSI reporting settings that do not have the CSI reporting sub-configuration list (higher layer parameter csi-ReportSubConfigToAddModList) configured, then that CSI-RS resource and the CSI-RS ports within that CSI-RS resource are counted N times.

[0145] <Embodiment 1a> This embodiment relates to Issue 1 (Rules Regarding ARC).

[0146] When PO CSI reporting is configured, how to count the number of active resources of CSI-RS (rules regarding ARC, method of counting active resources) may differ depending on the frequency domain reporting granularity (between wideband or subband).

[0147] According to this embodiment, the UE implementation in the sub-band case can be simpler.

[0148] This embodiment may be based on option 1 below.

[0149] <<Option 1>> The rules for ARC may be based on at least one of several options 1-x / variations y below:

[0150] <<<Option 1-1>>> A CMR is active for a duration that, if it is a periodic CSI-RS, begins when the periodic CSI-RS is configured by higher layer signaling and ends when the periodic CSI-RS configuration is released.

[0151] <<<Option 1-2>>> If a CSI-RS resource is referenced N times by one or more CSI reporting settings that do not have the CSI reporting sub-configuration list (higher layer parameter csi-ReportSubConfigToAddModList) configured, then at least one of that CSI-RS resource and a CSI-RS port within that CSI-RS resource is counted N times.

[0152] <<<Options 1-3>>> When subband [PO reporting] is configured, at least one of the CSI-RS resources and CSI-RS ports within the CSI-RS resources may be counted more than when wideband [PO reporting] is configured. For example, the number of times that at least one of the CSI-RS resources and CSI-RS ports within the CSI-RS resources is counted in subband PO reporting may be N0 times the number of times that the element is counted in wideband PO reporting. N0 may be the number of subbands [to be configured], may be defined in the specification, or may be reported by UE capabilities.

[0153] <<<Options 1-4>>> When the [sub-band PO report] is set (when the frequency domain reporting granularity of the PO report is a sub-band), as the number of sub-bands to be set increases, the number of times at least one element of the CSI-RS resource and the CSI-RS ports within the CSI-RS resource is counted increases.

[0154] <<<Variation 1>>> Regarding Option 1-3 / 1-4, in sub-band PO reporting, the number of times at least one element of the CSI-RS resource and the CSI-RS ports within the CSI-RS resource is counted may be N0 / Y times the number of times that element is counted in wide-band PO reporting. N0 may be the number of [configured] sub-bands. Y may be defined in the specification or reported according to UE capabilities.

[0155] <<<Variation 2>>> Regarding Option 1-3 / 1-4, in sub-band PO reporting, the number of times at least one element of the CSI-RS resource and the CSI-RS ports within the CSI-RS resource is counted may be N A times that of wide-band PO reporting. Y may be defined in the specification or reported according to UE capabilities. For y1 ≤ Y < y2, N A = N1, for y2 ≤ Y < y3, N A = N2, …, and so on. Here, N1, N2, …, y1, y2, y3, … may be defined in the specification.

[0156] <<<Variation 3>>> Regarding Option 1-3 / 1-4, in sub-band PO reporting, the number of times at least one element of the CSI-RS resource and the CSI-RS ports within the CSI-RS resource is counted may be N A / Y times that of wide-band PO reporting. Y may be defined in the specification or reported according to UE capabilities. For y1 ≤ Y < y2, NA = For N1, where y2 ≤ Y < y3, N A = N2, …, it may be so. Here, {N1, N2, …, N i}, {y1, y2, y3, …, y j} may be defined in the specification.

[0157] <Embodiment 2> This embodiment relates to the rule regarding Argument 2 (O CPU ).

[0158] When the CSI report of PO is set, the number of CPUs occupied by the processing / calculation of the PO report (O CPU for the PO report) may be the same regardless of whether the frequency domain reporting granularity is wideband or subband.

[0159] According to this embodiment, in the NW, the calculation of the maximum number of CPUs can be simplified.

[0160] As in the example of FIG. 3, the number of CPUs O CPU occupied for the calculation of the PO report within one OFDM symbol CPU is as follows: the maximum number N of simultaneous CSI calculations reported by the UE capability

[0161] This embodiment may be based on the following Option 1.

[0162] <<Option 1>> The definition of the number of CPUs O CPU occupied by the processing of the PO report may be based on at least one of the following several Option 1-x.

[0163] <<<Option 1-1>>> O CPU for the PO report = X·N TRP . Here, X ≥ 1 for the PO report is defined based on the UE capability and determined by the UE. N TRPmay be the number of resources / resource sets of NZP CSI-RS configured for PO reporting, or may be the number of TRPs.

[0164] <<<Option 1-2>>> UE is N CPU It is not expected that an aperiodic CSI trigger state containing more than one reporting setting will be configured.

[0165] <Embodiment 2a> This embodiment is based on point 2 (O CPU (Rules regarding).

[0166] If CSI reporting for PO is configured, the number of CPUs occupied by processing / calculating PO reports (O CPU ) may vary depending on the frequency domain reporting granularity (between wideband or subband).

[0167] According to this embodiment, the UE implementation in the sub-band case can be simpler.

[0168] This embodiment may be based on option 1 below.

[0169] <<Option 1>> The definition of the number of CPUs occupied by processing the PO reports may be based on at least one of several options 1-x / variations y below:

[0170] <<<Option 1-1>>> O for PO report CPU =X N TRP Here, X≧1 for PO reporting is defined based on UE capabilities and is determined by the UE.

[0171] <<<Option 1-2>>> UE is N CPU It is not expected that an aperiodic CSI trigger state containing more than one reporting setting will be configured.

[0172] <<<Options 1-3>>> O for sub-band PO reporting CPU O for wideband PO reporting CPU For example, O for subband PO reporting CPU O for wideband PO reporting CPU N0 may be the number of subbands, or may be defined in the specification, or may be reported by the UE capabilities. For example, O for wideband PO reporting. CPU =X N TRP , for sub-band PO reporting CPU =X N TRP ·It may be N0.

[0173] <<<Options 1-4>>> When subband PO reporting is configured (when the frequency domain reporting granularity of the PO report is subband), the larger the number of subbands, the CPU becomes larger.

[0174] <<<Variation 1>>> Regarding Option 1-3 / 1-4, O for sub-band PO report CPU O for wideband PO reporting CPU For example, for wideband PO reporting, CPU =X N TRP , for sub-band PO reporting CPU =X N TRP N0 / Y, where N0 is the number of subbands to be configured. Y may be defined in the specification or reported by the UE capabilities.

[0175] <<<Variation 2>>> Regarding Option 1-3 / 1-4, O for sub-band PO report CPU O for wideband PO reporting CPU N AIt may also be a multiple. For example, for the wideband PO report, O CPU =X·N TRP ; for the sub - band PO report, O CPU =X·N TRP ·N A It may also be so. Y may be defined in the specification or reported according to the UE capability. For N where y1≦Y<y2 A =N1, for N where y2≦Y<y3 A =N2, …, it may also be so. Here, N1, N2, …, y1, y2, y3, …, may be defined in the specification.

[0176] <<<Variation 3>>> Regarding Option 1 - 3 / 1 - 4, for the O for the sub - band PO report CPU may be N CPU of O for the wide - band PO report A / Y times. For example, for the wide - band PO report, O CPU =X·N TRP ; for the sub - band PO report, O CPU =X·N TRP ·N A / Y. N0 may be the number of [configured] sub - bands. Y may be defined in the specification or reported according to the UE capability. For N where y1≦Y<y2 A =N1, for N where y2≦Y<y3 A =N2, …, it may also be so. Here, {N1, N2, …, N i}, {y1, y2, y3, …, y j}, may be defined in the specification.

[0177] <Supplementary Note> In the present disclosure, the coefficient for [determining O based on UE capability], [UE] capability, capability information, X, X·N CPU , X·N0, X·N0 / Y, X·N TRP , X·N A , X·N A / Y, may be mutually interchanged.

[0178] In the present disclosure, the number of [NZP-]CSI-RS resources, the number of [NZP-]CSI-RS resource sets, the number of TRPs, N TRP may be interchangeable with each other.

[0179] <<Notification of Information to UE>> The notification of any information from the [network (Network (NW)) (e.g., base station (Base Station (BS)))] to the UE in the above-described embodiment (in other words, the reception of any information from the BS by the UE) may be performed using physical layer signaling (e.g., DCI), upper layer signaling (e.g., RRC signaling, MAC CE, RRC message, LTE positioning protocol (LPP) message), a specific signal / channel (e.g., DCI, PDCCH, PDSCH, reference signal), or a combination thereof.

[0180] When the above notification is performed by the MAC CE, the MAC CE may be identified by including a new logical channel ID (Logical Channel ID (LCID)) not defined in the existing standard in the MAC sub-header. The MAC CE may be an extension of the existing MAC CE. For example, the MAC CE may be one obtained by introducing a new octet into the existing MAC CE.

[0181] When the above notification is performed by the DCI, the above notification may be performed by a specific field of the DCI, a radio network temporary identifier (Radio Network Temporary Identifier (RNTI)) used for scrambling cyclic redundancy check (Cyclic Redundancy Check (CRC)) bits assigned to the DCI, the format of the DCI, etc. The specific field may be an existing DCI field or a new DCI field. The RNTI may be an existing RNTI or a new RNTI. The format of the DCI may be an existing DCI format or a new DCI format.

[0182] In addition, the notification of any information to the UE in the above-described embodiments may be performed periodically, semi-persistently (triggered by the UE or gNB), or aperiodically (triggered by the UE or gNB).

[0183] In the above-described embodiments, the UE may receive at least one piece of information from the NW among the following several QCL rules. ◆QCL type A ◆QCL type B ◆QCL type C ◆QCL type D

[0184] In the above-described embodiments, the QCL source RS for each QCL type may be at least one of the following several RSs. ◆SSB ◆CSI-RS with / without repetition ◆TRS ◆DMRS of PDCCH / PDSCH

[0185] In the above-described embodiments, the information from the NW may be set / instructed by the following methods. ◆Common to multiple UEs, or UE-specific ◆Cell-specific, or common to multiple cells ◆Per UE / Per CC / Per BWP / Per band / Per cell / Per cell group (CG)

[0186] <<Notification of information from the UE>> The notification of any information from the UE to the NW (or, in other words, the transmission / reporting of any information from the UE to the BS) in the above-described embodiments may be performed using physical layer signaling (e.g., UCI), upper layer signaling (e.g., RRC signaling, MAC CE, RRC message, LPP message), specific signals / channels (e.g., UCI, PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

[0187] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID in the MAC subheader that is not defined in existing standards. The MAC CE may be an extension of an existing MAC CE. For example, the MAC CE may be an extension of an existing MAC CE by introducing a new octet.

[0188] If the notification is performed by UCI, the notification may be transmitted using PUCCH or PUSCH.

[0189] In addition, notification of any information from the UE in the above embodiments may be periodic, semi-persistent (triggered by the UE or the gNB), or aperiodic (triggered by the UE or the gNB).

[0190] <<Application of each embodiment>> In a UE / BS, the specific process / operation / control / assumption / information(s) of at least one of the above-described embodiments may be applied (used) when one or more of the following conditions are met: ◆ Upper layer parameters indicating the above specific processing / operation / control / assumment / information are set. ◆The above specific processing / action / control / assuming / information is determined based on the relevant upper layer parameters, ◆The above specific processing / action / control / assuming / information is instructed / specified / activated / triggered by MAC CE / DCI / UCI / resource / channel / RS, Reporting or supporting specific UE capabilities that indicate (or relate to) the specific processes / operations / controls / assumptions / information mentioned above; ◆The application of the above specific processing / action / control / assumption / information is determined based on specific conditions.

[0191] The specific UE capabilities may indicate at least one of the following: ◆Supporting the above specific processing / action / control / assuming / information, ◆ Capabilities of each embodiment. * Capabilities of each option in each embodiment, or capabilities of a combination of multiple options in each embodiment. ◆The capabilities of each option in each embodiment, or the capabilities of a combination of multiple options in each embodiment.

[0192] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, band, band combination, BWP, component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

[0193] Furthermore, the specific UE capability may be a capability that is applied across all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (for example, Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0194] If the above conditions are not met, the UE / BS may follow the behavior specified in existing 3GPP releases.

[0195] Information on whether one or more of the above embodiments / options / choices / examples apply / are used, or which of the above embodiments / options / choices / examples apply / are used, may be based on several of the following methods: ◆The information is configured by one or more higher layer parameters / RRC IEs. ◆The information is determined by one or more relevant higher layer parameters / RRC IEs. ◆The information is indicated by the MAC CE / DCI. The information is determined based on one or more UE capabilities. ◆The information is described / defined in the specification. ◆The information is based on the conditions described / defined in the specification. ◆The information is determined by a combination of several pieces of information above. For example, the information is determined by upper layer parameters / MAC CE / DCI settings / indications, and reported by UE capabilities.

[0196] The above embodiments / options / choices may be combined into one embodiment / option / choice.

[0197] In the above embodiments, the RS to be measured may be a QCL source RS in an active TCI state / indicated / unified TCI state.

[0198] (Addendum) The following inventions are added regarding embodiment 1 / embodiment 1a of the present disclosure. [Appendix 1] Capability information indicating the capability of simultaneous channel state information (CSI) calculation (e.g., N CPU / simultaneousCSI-ReportsPerCC / simultaneousCSI-ReportsAllCC), and a receiver (transmitter / receiver 220) for receiving a report configuration (e.g., CSI-ReportConfig) for reporting a phase offset for coherent joint transmit calibration; a control unit (control unit 210) for controlling transmission of the report using a number of CSI-RS resources not exceeding the capacity; A terminal (user terminal 20) in which the CSI-RS resources are counted within a duration from when a periodic CSI-Reference Signal (RS) configuration is configured by higher layer signaling until the periodic CSI-RS configuration is released. [Appendix 2] 1. The terminal of claim 1, wherein if the CSI-RS resource is referenced N times by one or more CSI reporting settings that do not have a CSI reporting sub-configuration list (e.g., csi-ReportSubConfigToAddModList) configured, the CSI-RS resource and a CSI-RS port within the CSI-RS resource are counted N times. [Appendix 3] 3. The terminal of claim 1, wherein the number of times at least one element of the CSI-RS resource and a CSI-RS port within the CSI-RS resource is counted in a case where the report indicates a subband phase offset is the same as the number of times the element is counted in a case where the report indicates a wideband phase offset. [Appendix 4] 4. The terminal of claim 1, wherein the number of times at least one element of the CSI-RS resource and a CSI-RS port within the CSI-RS resource is counted in a case where the report indicates a subband phase offset is greater than the number of times the element is counted in a case where the report indicates a wideband phase offset. [Appendix A] a receiver (transmitter / receiver 120) for receiving capability information indicating a capability of simultaneous channel state information (CSI) calculation; a transmitter (transmitter / receiver 120) for transmitting a report configuration for reporting a phase offset for coherent joint transmit calibration; a control unit (control unit 110) for controlling reception of the report using a number of CSI-RS resources not exceeding the capacity; A base station (base station 10) in which the CSI-RS resources are counted within a duration from when a periodic CSI-Reference Signal (RS) configuration is configured by higher layer signaling until the periodic CSI-RS configuration is released.

[0199] (Addendum) The following inventions are added regarding embodiment 2 / embodiment 2a of the present disclosure. [Appendix 1] Capability of simultaneous channel state information (CSI) calculations (e.g., N CPU a transmitter (transmitter / receiver 220) that transmits capability information indicating: a receiver (transmitter / receiver 220) for receiving a report configuration (e.g., CSI-ReportConfig) for reporting a phase offset for coherent joint transmit calibration; a control unit (control unit 210) for controlling transmission of the report using one or more CSI-RS resources indicated in the reporting configuration; The number of CSI processing units (e.g., O CPU ) is a function of the capability-based factor and the number of the one or more CSI-RS resources (e.g., N TRP ) and a terminal (user terminal 20) based on the product of [Appendix 2] 2. The terminal according to claim 1, wherein the number of reporting settings included in the aperiodic CSI trigger state set by the reporting configuration is equal to or less than the number based on the capability. [Appendix 3] 3. The terminal of claim 1, wherein the number of CSI processing units in a case where the report indicates a subband phase offset is the same as the number of CSI processing units in a case where the report indicates a wideband phase offset. [Appendix 4] 4. The terminal of any one of Supplementary Notes 1 to 3, wherein the number of CSI processing units in a case where the report indicates a subband phase offset is greater than the number of CSI processing units in a case where the report indicates a wideband phase offset. [Appendix A] a receiver (transmitter / receiver 120) for receiving capability information indicating a capability of simultaneous channel state information (CSI) calculation; a transmitter (transmitter / receiver 120) for transmitting a report configuration for reporting a phase offset for coherent joint transmit calibration; a control unit (control unit 110) for controlling reception of the report using one or more CSI-RS resources indicated in the reporting configuration; A base station (base station 10), wherein the number of CSI processing units occupied for calculation of the report is based on the product of the capacity-based factor and the number of the one or more CSI-RS resources.

[0200] (wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0201] 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), or the like, which are specified by the Third Generation Partnership Project (3GPP).

[0202] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0203] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0204] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0205] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The location, number, shape, size, etc. of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0206] The wireless communication system 1 may utilize Multi Input Multi Output (MIMO). For example, one cell may be formed by one antenna / base station 10, or may be formed by multiple antennas / base stations 10. One [virtual] cell (which may be called, for example, a super cell) may be composed of multiple [virtual] cells (which may be called, for example, sub-cells). A super cell may correspond to a cell whose physical range is fixed, and a sub-cell may correspond to a cell whose physical range varies semi-statically / dynamically. In this case, the wireless communication system 1 may be called a cell-free system.

[0207] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0208] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0209] Furthermore, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0210] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 / Xn interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0211] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may 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.

[0212] The core network 30 may include network functions (NFs) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and an Operation, Administration and Maintenance (Management) (OAM). Note that a single network node may provide multiple functions. Furthermore, communication with an external network (e.g., the Internet) may be performed via the DN.

[0213] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0214] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, 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), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0215] The radio access scheme may also be called a waveform. Note that 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 UL and DL radio access schemes.

[0216] In the wireless communication system 1, 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. may be used as the downlink channel.

[0217] Furthermore, in the wireless communication system 1, 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)), etc. may be used as an uplink channel.

[0218] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

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

[0220] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0221] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0222] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0223] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0224] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0225] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0226] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0227] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0228] (base station) 5 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0229] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0230] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0231] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0232] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0233] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0234] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0235] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0236] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0237] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0238] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0239] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0240] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna .

[0241] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0242] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0243] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes providing NFs), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0244] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0245] The base station 10 may be separated into three elements: a radio unit (RU), a distributed unit (DU), and a central unit (CU). For example, the RU may perform RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level functions of the physical layer (precoding, IFFT, FFT, etc.). The DU may perform higher-level functions of the physical layer (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may perform PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer functions.

[0246] In the present disclosure, the base station 10 may include a single device that implements all of the functions of the RU, DU, and CU, or may include multiple devices that each implement some of the functions of the RU, DU, and CU and are connected to each other. In the present disclosure, the base station 10 may be interchangeably read as RU / DU / CU.

[0247] (user terminal) 6 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0248] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0249] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0250] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0251] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0252] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0253] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0254] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0255] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0256] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0257] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0258] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0259] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0260] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0261] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0262] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may 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 be output to the control unit 210.

[0263] The measurement unit 223 may derive channel measurements for CSI calculation based on the channel measurement resources. The channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on the interference measurement resources. The interference measurement resources may be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. Note that CSI-IM may be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS. Note that in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeably read as interchangeable.

[0264] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0265] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0266] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0267] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0268] In this disclosure, terms such as apparatus, circuit, device, section, unit, etc. may be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0269] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0270] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0271] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0272] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0273] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0274] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0275] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0276] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0277] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0278] Furthermore, the base station 10 and the user terminal 20 may 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), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0279] Note that the devices included in the core network 30 (for example, network nodes that provide NFs) may also be realized by the above-described functional block / hardware configuration.

[0280] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0281] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0282] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0283] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol), and may be a time unit based on numerology.

[0284] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0285] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0286] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot 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 (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0287] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0288] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a 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.

[0289] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0290] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0291] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0292] 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 in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0293] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0294] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0295] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0296] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0297] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0298] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0299] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0300] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0301] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0302] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0303] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0304] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0305] With respect to any information (e.g., variables, constants, parameters) described in the present disclosure, even if not specifically stated in the above embodiments, any first device (e.g., UE / base station) may notify any second device (e.g., base station / UE) of information indicating / identifying (or relating to) the value of the any information.

[0306] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0307] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0308] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0309] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0310] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0311] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0312] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0313] 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," "transmit power," "phase rotation," "antenna port," "layer," "number of layers," "rank," "resource," "resource set," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," "UE panel," "transmitting entity," "receiving entity," etc. may be used interchangeably.

[0314] In the present disclosure, the term "antenna port" may be interchangeably read as an antenna port for any signal / channel (e.g., a demodulation reference signal (DMRS) port). In the present disclosure, the term "resource" may be interchangeably read as a resource for any signal / channel (e.g., a reference signal resource, an SRS resource, etc.). The resource may include time / frequency / code / space / power resources. The spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0315] The group may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, and the like.

[0316] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.

[0317] In addition, in the present disclosure, the terms TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc. may be read interchangeably.

[0318] Furthermore, in this disclosure, terms such as "QCL," "QCL assumptions," "QCL relationships," "QCL type information," "QCL properties," "specific QCL type (e.g., Type A, Type D) properties," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.

[0319] In this disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In this disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.

[0320] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interchangeable. "Spatial relationship information (TCI state)" may be interchangeable with "set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and TCI may be interchangeable. The spatial relationship information and spatial relationship may be interchangeable.

[0321] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0322] A base station can accommodate one or more (e.g., 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 be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0323] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0324] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0325] A mobile station may also be 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, handset, user agent, mobile client, client, or some other suitable terminology.

[0326] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0327] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0328] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0329] 8 is a diagram showing an example of a vehicle according to an embodiment. 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, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM 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.

[0330] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer 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.

[0331] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0332] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 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 the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0333] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, 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 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0334] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0335] The driving assistance system unit 64 is configured with various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), Artificial Intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0336] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0337] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10 or user terminal 20. Furthermore, the communication module 60 may be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (or may function as at least one of the base station 10 and user terminal 20).

[0338] The communication module 60 may transmit at least one of signals from the above-mentioned 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 be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0339] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0340] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0341] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as uplink channel and downlink channel may be read as sidelink channel.

[0342] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0343] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0344] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the specific order presented.

[0345] Each aspect / embodiment described in the present disclosure may be a technology other than 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 decimal number)), 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 The present invention may be applied to systems that use 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0346] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0347] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0348] The term "determining," as used in this disclosure, may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0349] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0350] Furthermore, "determination" may be considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "determining" some action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.

[0351] Furthermore, in this disclosure, "determine / determining" may be interchangeably read as "assume / assuming," "expect / expecting," "consider / considering," etc. Furthermore, in this disclosure, "does not expect to do..." may be interchangeably read as "assumes not to do...."

[0352] In the present disclosure, "expect" may be interchangeably read as "be expected." For example, "expect(s) ..." ("..." may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as "be expected ...," "do ... (if the above "..." is a to-infinitive, a verb with "to")," etc. "does not expect ..." may be interchangeably read as "be not expected ...," "does not ... (if the above "..." is a to-infinitive, a verb with "to")," etc. Furthermore, "An apparatus A is not expected ..." may be interchangeably read as "an apparatus B other than apparatus A does not expect ... from apparatus A" (for example, if apparatus A is a UE, apparatus B may be a base station).

[0353] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0354] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0355] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0356] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0357] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0358] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0359] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with the prefix "i-th" (i is any integer) (for example, "highest" may be interchangeable as "i-th highest").

[0360] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0361] In the present disclosure, terms such as "when A, B," "if A, (then) B," "B upon A," "B in response to A," "B based on A," "B during / while A," "B before A," "B at (the same time as) / on A," "B after A," "B since A," and "B until A" may be interchangeable. Note that A, B, and the like herein may be replaced with appropriate expressions, such as nouns, gerunds, and regular sentences, depending on the context. Note that the time difference between A and B may be nearly zero (immediately after or immediately before). A time offset may be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after the time offset at which A occurs." The time offset (eg, one or more symbols / slots) may be predefined or may be specified by the UE based on signaled information.

[0362] In the present disclosure, timing, time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc. may be read interchangeably.

[0363] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The description of the present disclosure is for illustrative purposes only and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a transmitter for transmitting capability information indicating a capability of simultaneous channel state information (CSI) calculation; a receiver for receiving a reporting configuration for reporting a phase offset for coherent joint transmit calibration; a control unit that controls transmission of the report using a number of CSI-RS resources that does not exceed the capacity; The terminal, wherein the CSI-RS resource is counted within a duration from when a periodic CSI-RS configuration is configured by higher layer signaling to when the periodic CSI-RS configuration is released.

2. 2. The terminal of claim 1, wherein when the CSI-RS resource is referenced N times by one or more CSI reporting settings that do not have a CSI reporting sub-configuration list configured, the CSI-RS resource and a CSI-RS port within the CSI-RS resource are counted N times.

3. 2. The terminal of claim 1, wherein, in a case where the report indicates a subband phase offset, the number of times that at least one element of the CSI-RS resource and a CSI-RS port within the CSI-RS resource is counted is the same as the number of times that the element is counted in a case where the report indicates a wideband phase offset.

4. 2. The terminal of claim 1, wherein, in a case where the report indicates a subband phase offset, the number of times that at least one element of the CSI-RS resource and a CSI-RS port within the CSI-RS resource is counted is greater than the number of times that the element is counted in a case where the report indicates a wideband phase offset.

5. transmitting capability information indicating a capability of simultaneous channel state information (CSI) calculation; receiving a reporting configuration for reporting a phase offset for coherent joint transmit calibration; and controlling transmission of the report using a number of CSI-RS resources not exceeding the capacity; The CSI-RS resource is counted within a duration from when a periodic CSI-RS configuration is configured by higher layer signaling to when the periodic CSI-RS configuration is released.

6. a receiver for receiving capability information indicating a capability of simultaneous channel state information (CSI) calculation; a transmitter unit for transmitting a report configuration for reporting a phase offset for coherent joint transmit calibration; a control unit that controls reception of the report using a number of CSI-RS resources that does not exceed the capacity; A base station, wherein the CSI-RS resources are counted within a duration from when a periodic CSI-reference signal (RS) configuration is configured by higher layer signaling to when the periodic CSI-RS configuration is released.

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