Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives a configuration of a channel state information (CSI) report for coherent joint transmission calibration; and a control unit that controls transmission of the CSI report on the basis of channel measurement or interference measurement in one or more occasions that satisfy a condition.

Description

Terminal, wireless communication method and base station

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

[0002] Long Term Evolution (LTE) has been specified for the Universal Mobile Telecommunications System (UMTS) network 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, etc.) are also being considered.

[0004] 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

[0005] In future wireless communication systems (e.g., NR), it is being considered to report channel state information (CSI) based on the reception of reference signals. It is also being considered to have multiple transmission / reception points (TRPs, multi-TRP (MTRP)) or multiple panels (multiple panels, multi-panel) perform DL transmission to a terminal (user terminal, user equipment (UE)). Coherent joint transmission (CJT) using multi-TRP / multi-panel is also being considered. It is also being considered to apply CJT to cases where the connection between TRPs is not an ideal environment (e.g., a non-ideal backhaul environment).

[0006] However, the settings for CJT calibration have not been sufficiently considered, and if this consideration is insufficient, there is a risk that improvements in communication quality / communication throughput may be hindered.

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

[0008] A terminal according to one aspect of the present disclosure includes a receiver that receives a channel state information (CSI) report configuration for coherent joint transmission calibration, and a controller that controls transmission of a CSI report based on channel measurements or interference measurements on one or more occasions that satisfy a condition.

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

[0010] FIG. 1 illustrates an example of inter-TRP synchronization using CJT calibration / pre-compensation. FIG. 2 illustrates an example of a CSI-RS occasion used to calculate a CSI value according to option 2-1 of embodiment 1. FIG. 3 illustrates an example of a CSI-RS occasion used to calculate a CSI value according to option 2-2 of embodiment 1. FIG. 4 illustrates an example of transmitting a CSI report according to embodiment 2. FIG. 5 illustrates an example of dropping a CSI report according to embodiment 2. FIG. 6 illustrates an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 7 illustrates an example of a configuration of a base station according to an embodiment. FIG. 8 illustrates an example of a configuration of a user terminal according to an embodiment. FIG. 9 illustrates an example of a hardware configuration of a base station and a user terminal according to an embodiment. FIG. 10 illustrates an example of a vehicle according to an embodiment.

[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, feedback, etc.) the generated CSI to a network (e.g., a base station). The CSI may be transmitted to the base station, for example, using 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 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), L1-RSRP (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal to Interference plus Noise Ratio), L1-SNR (Signal to Noise Ratio), and the like.

[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, a "CSI-ReportConfig" information element (IE) of Radio Resource Control (RRC).

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

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

[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 an ID of a resource for the RS. The resource for the RS may include, for example, a non-zero-power CSI-RS resource or an SSB, and a CSI-IM resource (for example, a zero-power CSI-RS resource).

[0020] The frequency domain information may also indicate frequency granularity of the CSI report. 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 the 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 (the frequency domain information may include, for example, 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 CSI reporting (i.e., whether wideband PMI reporting or subband PMI reporting is to be performed) based on at least one of the reporting amount information and the 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., a 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 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 does 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] 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.

[0029] 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.

[0030] In Rel. 15 NR, UCI may contain one CSI part for wideband PMI feedback. CSI report #n contains PMI wideband information if reported.

[0031] 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.

[0032] 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 resource 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 resource 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).

[0033] For both FR1 and FR2, evaluation and provision of CSI reporting for DL ​​multi-TRP and / or multi-panel transmissions is under consideration to enable more dynamic channel / interference hypotheses for NCJT.

[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 Reference Resource Definition: Physical Layer Procedures for Data / Physical Downlink Shared Channel Related Procedures / UE Procedures for Reporting CSI / CSI) ((CSI Reference Resource)) The CSI reference resource for a 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 is related. ◆ In the time domain, the CSI reference resource for CSI reporting in UL slot n' is defined by a group of multiple DL PRBs corresponding to the band to which the derived CSI is related. ◆ In the time domain, the CSI reference resource for CSI reporting in UL slot n' is defined by 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. -◆For P / SP-CSI reporting, the following procedures are defined: -◆If a single CSI-RS / SSB resource for channel measurement is configured, n CSI_ref is a 4.2 that corresponds to an available DL slot. μ_DL If multiple CSI-RS / SSB resources are configured for channel measurement, n CSI_ref is a 5.2 that corresponds to an available DL slot. μ_DL - 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 slotis the number of symbols in a 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 no later than Z' symbols before the transmission time of the first OFDM symbol of the AP-CSI report.

[0036] If a slot in the serving cell 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, the slot is considered a valid DL slot.

[0037] (CSI Reporting Conditions) After CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation, the UE reports a CSI report only after receiving 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.

[0038] For a CSI reporting configuration (CSI-ReportConfig) that includes a list of sub-configurations provided by csi-ReportSubConfigList, after a 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 a CSI-RS / CSI-IM occasion for interference measurement for each sub-configuration when the CSI reference resource is not later than the CSI reference resource. Otherwise, the UE drops the report. Here, the sub-configuration is the sub-configuration activated / triggered for SP-CSI reporting.

[0039] 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.

[0040] 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 after receiving 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.

[0041] 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 measurement, 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 measurement, when the UE is not later than the CSI reference resource and within the same DRX active time if DRX is configured. p The 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.

[0042] 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 determine the K of the corresponding CSI-RS resource settings for channel measurement when the UE is not behind the CSI reference resource and within the same DRX active time if DRX is configured. TRSThe 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.

[0043] If DRX is configured, the UE shall report 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 shall drop the report.

[0044] For a CSI reporting configuration in CSI-ReportConfig associated with higher layer parameter reportQuantity having at least 'RI' on a serving cell for which cell DTX is activated, 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 cell DTX. Otherwise, the UE shall drop the CSI report.

[0045] As described above, multiple UE behaviors are defined for multiple values ​​of at least one setting of the report / resource setting method, the codebook type, and the report quantity (reportQuantity).

[0046] (Multi-TRP) In NR, one or more transmission / reception points (Transmission / Reception Points (TRP)) (multi-TRP) are considered to perform DL transmission to a UE using one or more panels (multi-panels). Also, it is considered that a UE performs UL transmission to one or more TRPs.

[0047] 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.

[0048] In the case where only one TRP (TRP1) of the multi-TRPs transmits to the UE (which may also be called single mode, single TRP, etc.), TRP1 transmits both control signals (PDCCH) and data signals (PDSCH) to the UE.

[0049] In this disclosure, single-TRP mode may refer to a mode in which multi-TRP (mode) is not set.

[0050] In a case where only one TRP of a multi-TRP transmits a control signal to a UE and the multi-TRP transmits a data signal (which may be called a single master mode), the UE receives each PDSCH transmitted from the multi-TRP based on one piece of Downlink Control Information (DCI).

[0051] In a case where each of the multi-TRPs transmits a separate control signal to the UE and the multi-TRPs transmit data signals (which may be called a multi-master mode), a first control signal (DCI) may be transmitted on TRP1 and a second control signal (DCI) may be transmitted on TRP2. The UE receives each PDSCH transmitted from the multi-TRP based on these DCIs.

[0052] 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).

[0053] 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.

[0054] Non-Coherent Joint Transmission (NCJT) is being considered as one form of multi-TRP transmission. In NCJT, for example, TRP1 modulates and layer-maps a first codeword to transmit a first PDSCH using a first number of layers (e.g., two layers) with a first precoding. TRP2 modulates and layer-maps a second codeword to transmit a second PDSCH using a second number of layers (e.g., two layers) with a second precoding.

[0055] Note that multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined as partially or completely overlapping in time and / or frequency domains, i.e., a first PDSCH from a first TRP and a second PDSCH from a second TRP may overlap in time and / or frequency resources.

[0056] The first PDSCH and the second PDSCH may be assumed to be not quasi-co-located (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).

[0057] In URLLC for multi-TRP, it is considered that PDSCH (transport block (TB) or codeword (CW)) repetition across multi-TRP is supported. Repetition schemes (URLLC schemes, e.g., Schemes 1, 2a, 2b, 3, and 4) across multi-TRP in the frequency domain, layer (spatial) domain, or time domain are supported. In Scheme 1, multiple PDSCHs from multi-TRP are space division multiplexed (SDM). In Schemes 2a and 2b, PDSCHs from multi-TRP are frequency division multiplexed (FDM). In Scheme 2a, the redundancy version (RV) is the same for multi-TRP. In Scheme 2b, the RVs for multi-TRP may be the same or different. 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.

[0058] Such a multi-TRP scenario allows for more flexible transmission control using good quality channels.

[0059] 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.

[0060] For single PDCCH design (mainly for ideal backhaul), TCI extension is being considered. Each TCI codepoint in the DCI may correspond to one or two TCI states. The TCI field size may be the same as that of Rel. 15.

[0061] For PDCCH / CORESET specified in Rel. 15, one TCI state without CORESETPoolIndex (also referred to as TRP Info) is set to one CORESET.

[0062] Regarding the PDCCH / CORESET enhancements specified in Rel. 16, in multi-TRP based on multi-DCI, a CORESET pool index is configured for each CORESET.

[0063] Joint Transmission (JT) may refer to simultaneous data transmission from multiple points (eg, TRPs) to a single UE.

[0064] 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 will interfere with the PDSCH from the other TRP.

[0065] Rel. 18 is considering supporting coherent joint transmission (CJT, mTRP CJT) using up to four TRPs. Data from the four TRPs may be coherently precoded and transmitted to the UE on the same time-frequency resource. For example, the same precoding matrix may be used to consider channels from the four TRPs. "Coherent" may mean that there is a fixed 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.

[0066] In Rel. 18, a UE may receive up to four DL-RSs (e.g., TRSs) from each of up to four CJT-TRPs (TRPs #1 to #4 that support CJT).

[0067] (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 a UE measures the delay, Doppler, or phase differences (e.g., offsets) between TRPs and reports them to a 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 a CJT calibration [CSI] report. Up to three TRPs (out of a maximum of four TRPs) may be subject to precompensation.

[0068] In extending UE reporting for CJT / DL mTRP placement under non-ideal synchronization and backhaul, measurement and reporting of time misalignment and frequency / phase offset between TRPs is considered, assuming existing CSI-RS designs and standalone aperiodic reporting on PUSH.

[0069] To perform CJT in a situation where the signals / channels between TRPs are not synchronized, UE-assisted calibration may synchronize the signals / channels between TRPs by applying pre-compensation to at least one of the following: ◆CJT PDSCH. ◆NZP-CSI-RS for CJT CSI codebook reporting (CJT CSI-RS).

[0070] Regarding the CJT calibration report, the following is being considered: ◆ In the Rel. 19 AP standalone CJT calibration report, the N set when the report quantity (ReportQuantity) is 'cjtc-Dd' (delay offset Doffest and delay offset determination result d) or 'cjtc-F' (frequency offset) TRP Regarding the applicable types of NZP CSI-RS resources / resource sets, 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 four. In other words, P-TRS is repurposed for CMR for reporting delay / frequency offsets. ◆ In Rel. 19 AP standalone CJT calibration reports, the N set when the report quantity is 'cjtc-P' (DL / UL phase offset) is TRP Regarding applicable types of resources / resource sets of NZP CSI-RS, a single-port CSI-RS for CSI is used, i.e., the single-port CSI-RS for CSI is repurposed for CMR for phase offset reporting. Assuming TDD usage, beamformed CMR is considered.

[0071] The type / quantity of reporting in the CJT calibration report can be represented by the following parameters: 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 d is assumed to be 0 and is not reported. n (or dn or d, n=0,1,...,N TRP 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. n (or FOn or F0, n=0,1,...,N TRP −1, n≠nref) represents the measured frequency offset associated with the nth CSI-RS resource / resource set relative to a reference CSI-RS resource / resource set. nref The value of is assumed to be 0 and is not reported. n,σ (or Φn, σ or PO, n=0,1,...,N TRP −1, n≠nref, σ=0,1,...,Σ−1) denotes 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.

[0072] In other words, the following is considered for CMR for CJT calibration: Periodic TRS resource set per TRP (i.e., N TRP (Number of TRPs) P-TRS resource sets are supported. At least one port (non-TRS) NZP CSI-RS per TRP for phase offset reporting (i.e., N TRPNZP CSI-RS resources / resource sets) are supported. It is assumed that 1-port NZP CSI-RS is beamformed (UE-specific).

[0073] Regarding UCI coding in CJT calibration reports, the following is considered: ◆ In Rel. 19 AP standalone CJT calibration reports 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 reports, FO reports, and TDD PO reports. That is, nref (the reference CSI-RS resource) is selected and reported by the UE.

[0074] 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 independently selected and indicated / reported by the UE. One-part UCI is used.

[0075] In other words, the following is considered for UCI coding: ◆ One report contains one or more types. One or more types are supported, including any of the following several types: ◆ Delay offset only. ◆ Frequency offset only. ◆ Phase offset only. ◆ Delay offset and frequency offset.

[0076] The type of one CJT calibration [CSI] report may not be limited to the above-mentioned types, and may include at least one of a type reporting delay offset and phase offset, a type reporting frequency offset and phase offset, and a type reporting delay offset, frequency offset, and phase offset.

[0077] Regarding phase offset reporting, the following is considered: ◆ Wideband (WB) reporting is supported. ◆ Regarding SRS configuration / association with ports, the following is 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 a total of xQ ports SRS (e.g., 1) SRS port.

[0078] 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,σ denotes the measured offset between the n-th CSI-RS resource / resource set and the reference CSI-RS resource set nref for the σ-th frequency unit, where the following are considered: ◆Σ=1 is supported. ◆Value Φ n,σ -A Φ and A Φ A phase quantized uniformly between 0 and A Φ , which indicates a phase uniformly quantized between

[0079] For aperiodic standalone CJT calibration reporting, when ReportQuantity is 'cjtc-P' (DL / UL phase offset), the following is considered: ◆ Regarding the number of configured and associated SRS resources (Q) for antenna switching xTyR, at least Q=1 is supported, where the configured and associated SRS resources are selected from all y / x SRS resources and all configured resource sets. ◆ Regarding the method for determining the SRS port corresponding to the "reference UE antenna port", P is selected from all ports from the configured Q SRS resources. SRS = 1 SRS port is supported.

[0080] (Time Constraint) In deriving CSI values, a time constraint setting for channel measurements (timeRestrictionForChannelMeasurements) and a time constraint setting for interference measurements (timeRestrictionForInterferenceMeasurements) can be set.

[0081] If timeRestrictionForChannelMeasurements is not configured (timeRestrictionForChannelMeasurements is set to 'notConfigured'), the UE derives channel measurements for the calculation of the CSI value reported in UL slot n based only on the occasion of the NZP CSI-RS associated with the CSI resource setting that is not later than the CSI reference resource.

[0082] If timeRestrictionForChannelMeasurements is configured (timeRestrictionForChannelMeasurements is set to 'Configured'), the UE derives channel measurements for the calculation of the CSI value reported in UL slot n based only on the NZP CSI-RS occasions associated with the CSI resource setting that are latest and not later than the CSI reference resource and within the cell DTX active time of the serving cell if cell DTX is activated.

[0083] If timeRestrictionForInterferenceMeasurements is not configured (timeRestrictionForInterferenceMeasurements is set to 'notConfigured'), the UE derives interference measurements for calculation of the CSI value to be reported in UL slot n based on at least one of the CSI-IM and the NZP CSI-RS for interference measurement that is not later than the CSI reference resource associated with the CSI resource setting.

[0084] If timeRestrictionForInterferenceMeasurements is configured (timeRestrictionForInterferenceMeasurements is set to 'Configured'), the UE derives interference measurements for calculation of the CSI value to be reported in UL slot n based only on at least one of the CSI-IM and the NZP CSI-RS for interference measurement that are associated with the CSI resource setting on the serving cell that is latest and not later than the CSI reference resource and within the cell DTX active time of the serving cell if cell DTX is activated.

[0085] The CSI reporting configuration (CSI-ReportConfig) linked to the TRS is not configured with timeRestrictionForChannelMeasurements set to 'configured'. In other words, the UE does not expect / assume that the CSI-ReportConfig linked to the CSI resource configuration (CSI-ResourceConfig) containing the NZP CSI-RS resource set (NZP-CSI-RS-ResourceSet) configured with trs-Info and the CSI-ReportConfig configured with timeRestrictionForChannelMeasurements set to 'configured' is configured.

[0086] (CSI Report Dropping Rule After a Specific Event) As described in the above "CSI Reporting Conditions", after a specific event, a CSI report is performed / transmitted only after receiving one or two of the following occasions that are not later than the CSI reference resource: ◆ X CSI-RS transmission occasions for channel measurement ◆ Y occasions of CSI-RS and CSI-IM for interference measurement

[0087] In all other cases, the CSI report is dropped.

[0088] The specific event, the channel measurement occasion (X), and the interference measurement occasion (Y) may be given by the following: ◆ For the Rel. 15 / 16 CSI codebook, the specific event is a CSI reporting (re)configuration, a serving cell activation, a BWP change, or an SP-CSI activation. The channel measurement occasion is one occasion. The interference measurement occasion is one occasion. ◆ For the Rel. 17 NCJT codebook, the specific event is a CSI reporting (re)configuration, a serving cell activation, a BWP change, or an SP-CSI activation. The channel measurement occasion is one occasion for each of the multiple CSI-RS resources. The interference measurement occasion is one occasion for each of the multiple CSI-RS resources. ◆ For the Rel. For the Rel. 18 CJT codebook, the specific event is a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation. The channel measurement occasion is one occasion for each of multiple CSI-RS resources. The interference measurement occasion is one occasion. For the Rel. 18 Doppler codebook, the specific event is a CSI reporting (re)configuration, serving cell activation, BWP change, or SP-CSI activation. The channel measurement occasion is one AP occasion, or K p There are K P / SP occasions. There is one occasion for interference measurement. For TDCP reporting in Rel. 18, the specific events are (re)configuration of CSI reporting, serving cell activation, or BWP change. There are K occasions for channel measurement. TRS One occasion for each resource in the resource set. Interference measurement occasions are not used.

[0089] (Issues) ◆Issue 1: In the CJT calibration report, it has not been sufficiently considered whether the time domain CMR constraints set by the time constraint setting for channel measurement are applied, or how the time domain CMR constraints set by the time constraint setting for channel measurement are applied.

[0090] ◆Issue 2: In the CJT calibration report, it has not been sufficiently considered whether the CSI report dropping rule after a specific event will be applied, or how the CSI report dropping rule after a specific event will be applied.

[0091] As described above, the constraints / rules for CJT calibration reporting have not been sufficiently considered. If the constraints / rules are not sufficiently considered, there is a risk that communication quality / throughput will deteriorate.

[0092] Therefore, the present inventors have studied methods for setting the SRS for CJT calibration and have conceived the following embodiments.

[0093] 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.

[0094] (Various Reinterpretations) In the present disclosure, a word enclosed in "( )" in a sentence may indicate an explanation of the word immediately preceding it (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc. Furthermore, in the present disclosure, a word enclosed in "[ ]" in a sentence may be interpreted including the word in the meaning of the entire sentence, or may be interpreted excluding (ignoring) the word in the meaning of the entire sentence. Note that "( )" and "[ ]" may also be used for purposes / meanings other than those mentioned above.

[0095] 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."

[0096] In the present disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0101] 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=M M+N-1 f(i),Σ i=M M+N-1 f i , f(i) or f(i) for i=M, M+1, ..., M+N-1 i summation, 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 selecting k values ​​from n values ​​(combinatorial coefficient), binomial coefficients, n Ck , C n k , may be read as interchangeable. In the present disclosure, x / / y and floor(x / y) may be read as interchangeable.

[0102] 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.

[0103] 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.

[0104] In this disclosure, the following abbreviations may be used: FDM: frequency division multiplexing TDM: time division multiplexing CDM: code division multiplexing

[0105] In the present disclosure, the terms indicate, report, and select may be read interchangeably.

[0106] 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 as interchangeable terms.

[0107] 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.

[0108] 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.

[0109] In the present disclosure, per resource, resource unit, per TRP, and TRP unit may be read interchangeably.

[0110] In the present disclosure, the terms resource and resource set may be used interchangeably.

[0111] In the present disclosure, frequency, Doppler shift, and Doppler may be read interchangeably.

[0112] In the present disclosure, the terms reporting amount, reporting content, reporting type, type of reporting content, CJT calibration reporting type, and reporting of at least one of delay offset, frequency offset, and phase offset may be read interchangeably.

[0113] In the present disclosure, the terms CJT calibration report, report of at least one of delay offset, frequency offset, and phase offset may be read interchangeably.

[0114] 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.

[0115] In the present disclosure, the CJT calibration report being configured, the UE being configured with the CJT calibration report, the UE receiving the configuration of the CJT calibration report, the CJT calibration report being configured for the CSI report, the UE receiving the configuration of the CJT calibration report for the CSI report, etc. may be read interchangeably.

[0116] In the present disclosure, delay, time, phase, frequency, and Doppler shift may be read interchangeably.

[0117] In the present disclosure, the enhancement of UE reporting for CJT / DL-multi-TRP deployment with non-ideal synchronization and backhaul may be interchangeably read as "a case of a UE configured with new UE reporting for CJT / DL-multi-TRP deployment with non-ideal synchronization and backhaul" or "a case of a UE supporting new UE reporting for CJT / DL-multi-TRP deployment with non-ideal synchronization and backhaul." In other words, in the present disclosure, the case in which the enhanced UE reporting is applied may be interchangeably read as a case in which new UE reporting is configured for the UE or a case in which the UE supports new UE reporting.

[0118] In the present disclosure, the CSI-RS resource, CMR, one or more occasions, one or more occasions satisfying a condition, one or more occasions based on a resource set, CSI-RS occasion, NZP CSI-RS occasion, CSI-RS transmission occasion, CSI-RS transmission occasion for channel measurement, CSI-RS / CSI-IM occasion, at least one of CSI-IM and NZP CSI-RS for interference measurement, and NZP associated with a CSI resource setting are used. The terms "CSI-RS occasion," "at least one CSI-RS transmission occasion for each of multiple CSI-RS resources in a corresponding CSI-RS resource set for channel measurement," and "one CSI-RS / CSI-IM occasion for a CSI-RS / CSI-IM resource in a corresponding resource set for interference measurement," and "one or more occasions for CSI measurement" may be read interchangeably.

[0119] (Wireless Communication Method) <Embodiment 1> When a CSI report (report amount, report type) of at least one offset of delay, frequency, and phase is configured, the report value may be derived from a CSI-RS resource (CSI-RS occasion) that satisfies a specific condition in the time domain. According to this embodiment, the NW can confirm / guarantee the time domain resource corresponding to the report value.

[0120] This embodiment may be based on at least one of several options:

[0121] <<Option 1>> The reporting value (reporting amount, reporting type) may be at least one of the following several options 1-x. ◆Option 1-1: D n,offset , i.e., the delay offset value associated with the nth TRS resource set, relative to the reference TRP resource set nref (the offset between the delay of the reference TRP resource set nref and the delay of the nth TRS resource set). ◆ Option 1-2: d n, that is, an indicator associated with the nth TRS resource set, which indicates whether the measured delay offset + delay spread is within or outside the defined range (the determination result (1 bit)). ◆ Option 1-3: FO n , i.e., the frequency offset value associated with the nth TRS resource set relative to the reference TRP resource set nref (the offset between the frequency of the reference TRP resource set nref and the frequency of the nth TRS resource set). ◆Options 1-4: Φ n,σ , that is, a phase offset value associated with the nth TRS resource set, relative to the reference TRP resource set nref (the offset between the phase of the reference TRP resource set nref and the phase of the nth TRS resource set). ◆Option 1-5: A combination of two or more of the above options 1-x. For example, a combination of option 1-1, option 1-2, and option 1-3. For example, a combination of option 1-1, option 1-2, and option 1-4. For example, a combination of option 1-3 and option 1-4.

[0122] In each of options 1-x, reporting of resource selection nref may be considered / introduced.

[0123] Option 1-1 and option 1-2 may be merged into a single reporting type (reporting amount).

[0124] <<Option 2>> The specific condition may be at least one of several options 2-x below. ◆ Option 2-1: The CSI-RS resource (CSI-RS occasion) is not later than the CSI reference resource. For example, the report value is derived based only on CSI-RS occasions that are not later than the CSI reference resource (FIG. 2). ◆ Option 2-2: The CSI-RS resource (CSI-RS occasion) is the most recent occasion. For example, the report value is derived based only on the most recent CSI-RS occasion. For example, the report value is derived based only on the most recent CSI-RS occasion that is not later than the CSI reference resource (FIG. 3).

[0125] At least one of Option 2-1 and Option 2-2 may be configurable for each signaling in "Notification of Information to UE" described later. Existing parameters (e.g., timeRestrictionForChannelMeasurements) of NR before Rel. 18 may be considered / used for this signaling. New signaling (e.g., specific offset type) dedicated for Rel. 19 or later may be introduced for this signaling.

[0126] <<Option 3>> The relationship (association) between Option 1 and Option 2 may be at least one of the following several Options 3-x. ◆ Option 3-1: A single Option 2-x may be supported for any of Option 1-x. For example, a combination of Option 1-1 and Option 2-1 or Option 2-2 may be supported. For example, a combination of Option 1-2 and Option 2-1 or Option 2-2 may be supported. ◆ Option 3-2: A different Option 2-x may be applied to multiple reporting values ​​(reporting amount, reporting type). For example, only Option 2-1 may be applied to the combination of Option 1-1 and Option 1-2. For example, only Option 2-1 may be applied to Option 1-3. For example, Option 2-1 or Option 2-2 may be applied to Option 1-4. There may be a notification from the NW to the UE to determine Option 2-1 or Option 2-2 (signaling in "Notifying Information to UE" described later).

[0127] <Embodiment 1a> When a CSI report (reporting amount, report type) of at least one offset among delay, frequency, and phase is configured, it is not necessary to expect / assume that a time constraint for channel measurement (e.g., the RRC parameter timeRestrictionForChannelMeasurements) is configured for the CSI report (the UE does not need to expect / assume that a time constraint for channel measurement is configured for the CSI report). According to this embodiment, UE implementation can be relaxed.

[0128] This embodiment may be based on the following options:

[0129] <<Option 1>> This embodiment applies to reporting of at least one offset of delay, frequency, and phase. This option may be at least one of several options 1-x below. ◆ Option 1-1: In a CSI reporting configuration associated with at least one offset of delay, frequency, and phase, a time constraint for channel measurement is not expected to be configured. ◆ Option 1-2: If a CSI reporting configuration for at least one offset of delay, frequency, and phase is associated with an NZP CSI-RS resource set configured with trs-Info (TRS is configured as CMR), a time constraint for channel measurement is not expected to be configured. ◆ Option 1-3: In a CSI reporting configuration for at least one offset of delay and frequency (not including a phase offset), a time constraint for channel measurement is not expected to be configured. In other words, a time constraint for channel measurement may be configured in a CSI reporting configuration including a phase offset report.

[0130] In a CSI report (report amount, report type) with at least one offset in delay, frequency, and phase, after a specific event, a UE may report the CSI only after receiving at least X CSI-RS transmission occasions for channel measurement and Y CSI-RS / CSI-IM occasions for interference measurement that are not later than the CSI reference resource; otherwise, the UE may drop the report. According to this embodiment, the CSI value can be derived from valid CSI-RS transmission occasions that guarantee the quality of the reported value.

[0131] As in the example of Fig. 4, if a CSI report is received after a specific event and at least one of X CSI-RS transmission occasions for channel measurement and Y CSI-RS / CSI-IM occasions for interference measurement that are not later than the CSI reference resource, the UE transmits the CSI report. As in the example of Fig. 5, if a specific event and at least one of X CSI-RS transmission occasions for channel measurement and Y CSI-RS / CSI-IM occasions for interference measurement that are not later than the CSI reference resource corresponding to the CSI report are not received, the UE drops the CSI report.

[0132] This embodiment may be based on at least one of several options:

[0133] <<Option 1>> At least one of the X CSI-RS transmission occasions and the Y CSI-RS / CSI-IM occasions may be at least one of the following several options 1-x. ◆ Option 1-1: One (transmission) occasion. ◆ Option 1-2: One (transmission) occasion for each of the multiple CSI-RS resources in the corresponding CSI-RS resource set. ◆ Option 1-3: X≧1 (transmission) occasion for each of the multiple CSI-RS resources in the corresponding CSI-RS resource set. X may be defined in the specifications or may be determined based on signaling in the "Notification of Information to UE" section described later. ◆ Option 1-4: One (transmission) occasion for each of the multiple CSI-RS resources in the corresponding TRS resource set.

[0134] <<Option 2>> The specific event may be at least one of the following several options 2-x: ◆ Option 2-1: CSI report (re)configuration ◆ Option 2-2: Serving cell activation ◆ Option 2-3: BWP change (of at least one of DL and UL) ◆ Option 2-4: SP-CSI activation

[0135] <<Option 3>> The relationship between at least one of the X CSI-RS transmission occasions and the Y CSI-RS / CSI-IM occasions and the DRX setting may be at least one of the following options 3-x: ◆ Option 3-1: Unrelated. That is, counting of the occasions does not depend on the DRX setting. ◆ Option 3-2: Counting of the occasions is performed only during DRX active time.

[0136] (Supplementary Note) In the first embodiment / the first embodiment, a time restriction for channel measurement (e.g., timeRestrictionForChannelMeasurements) can be replaced with a time restriction for interference measurement (e.g., timeRestrictionForInterferenceMeasurements). In this case, in the first embodiment / the first embodiment, a CSI-RS resource (CSI-RS occasion) can be replaced with at least one of CSI-IM and NZP CSI-RS for interference measurement.

[0137] In one or more of the above-described embodiments, the occasion may be interpreted as both a CSI-RS occasion for channel measurement and a CSI-RS / CSI-IM occasion for interference measurement, or as either a CSI-RS occasion for channel measurement or a CSI-RS / CSI-IM occasion for interference measurement.

[0138] <<Notification of Information to UE>> In the above-described embodiments, any information may be notified to the UE [from a Network (NW) (e.g., a Base Station (BS))] (in other words, reception of any information from the BS by the UE) using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE, RRC message, LTE positioning protocol (LPP) message), specific signals / channels (e.g., DCI, PDCCH, PDSCH, reference signal), or a combination thereof.

[0139] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader, which 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 existing MAC CE with a new octet introduced.

[0140] When the notification is performed by a DCI, the notification may be performed by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble 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.

[0141] In addition, notification of any information to 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).

[0142] In the above embodiment, the UE may receive information on at least one of the following QCL rules from the NW: QCL Type A QCL Type B QCL Type C QCL Type D

[0143] In the above embodiment, 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

[0144] In the above-described embodiment, 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)

[0145] <<Notification of Information from UE>> In the above-described embodiments, notification of any information from the UE [to the NW] (in other words, transmission / report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher 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.

[0146] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID, which is not defined in existing standards, in the MAC subheader. 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.

[0147] If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.

[0148] 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).

[0149] <<Regarding Application of Each Embodiment>> In a UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the above-mentioned embodiments may be applied (used) when one or more of the following conditions are met: - a higher layer parameter indicating the specific processes / operations / controls / assumptions / information is configured; - the specific processes / operations / controls / assumptions / information is determined based on related higher layer parameters; - the specific processes / operations / controls / assumptions / information is specified / activated / triggered by a MAC CE / DCI / UCI / resource / channel / RS; - a specific UE capability indicating (or related to) the specific processes / operations / controls / assumptions / information is reported or supported; - the application of the specific processes / operations / controls / assumptions / information is determined based on specific conditions.

[0150] The specific UE capability may indicate at least one of the following: ◆ Supporting the specific process / operation / control / assumption / information ◆ Capability of each embodiment ◆ Capability of each option in each embodiment, or capability of a combination of multiple options in each embodiment ◆ Capability of each option in each embodiment, or capability of a combination of multiple options in each embodiment.

[0151] 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, a band, a band combination, a BWP, a 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).

[0152] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0153] If the above conditions are not met, the UE / BS may follow the behavior specified in existing 3GPP releases.

[0154] The information on whether one or more of the above embodiments / options / choices / examples apply / are used, or which of several 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 related higher layer parameters / RRC IEs. ◆ The information is indicated by a MAC CE / DCI. ◆ The information is based on one or more UE capabilities. ◆ The information is described / defined in a specification. ◆ The information is based on conditions described / defined in a specification. ◆ The information is determined by a combination of several of the above information. For example, the information is determined by the configuration / indication of higher layer parameters / MAC CE / DCI and reported by a UE capability.

[0155] The above embodiments / options / choices may be combined into one embodiment / option / choice.

[0156] In the above embodiments, the RS to be measured may be a QCL source RS in an active / indicated / unified TCI state.

[0157] (Supplementary Notes) The following inventions are supplementary notes regarding Embodiment 1 / Embodiment 1a of the present disclosure. [Supplementary Note 1] A terminal having: a receiver unit that receives a channel state information (CSI) report configuration for coherent joint transmission calibration; and a controller unit that controls transmission of a CSI report based on channel measurements or interference measurements in one or more occasions that satisfy a condition. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the configuration indicates a plurality of CSI-Reference Signal (RS) resource sets and one or more reporting quantities, the one or more reporting quantities including at least one of a delay offset, a determination result of the delay offset, a frequency offset, and a phase offset, and the CSI report includes values ​​of the one or more reporting quantities that are based on measurements of one CSI-RS resource set and measurements of other CSI-RS resource sets among the plurality of CSI-RS resource sets. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein, when the configuration indicates a time constraint for the channel measurement, the condition includes at least one of: that the one or more occasions are not later than a CSI reference resource; and that the one or more occasions are the latest occasions. [Supplementary Note 4] The terminal according to any one of Supplementary Notes 1 to 3, wherein the condition is associated with the one or more reporting quantities.

[0158] (Supplementary Notes) The following inventions are supplemented with respect to a second embodiment of the present disclosure. [Supplementary Note 1] A terminal comprising: a receiver unit that receives a channel state information (CSI) report configuration indicating one or more resource sets for at least one of channel measurement and interference measurement for coherent joint transmission calibration; and a controller that controls transmission of the CSI report when, after an event, there is reception of one or more occasions based on the resource set that are not later than a CSI reference resource. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the one or more occasions are any of: one occasion; at least one occasion for each of a plurality of CSI-Reference Signal (RS) resources in the resource set; and one occasion for each of a plurality of CSI-RS resources in the resource set for tracking. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the event is any of the configuration, serving cell activation, bandwidth portion (BWP) change, and activation of semi-persistent CSI. [Supplementary Note 4] The terminal according to any one of Supplementary Note 1 to Supplementary Note 3, wherein the one or more occasions are during a discontinuous reception (DRX) active time.

[0159] (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.

[0160] 6 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) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0161] 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.

[0162] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (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.

[0163] 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 SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0164] 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 the base station 10.

[0165] 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 supercell) may be composed of multiple [virtual] cells (which may be called, for example, subcells). A supercell may correspond to a cell with a fixed physical range, and a subcell may correspond to a cell with a quasi-static / dynamically variable physical range. In this case, the wireless communication system 1 may be called a cell-free system.

[0166] 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 (CCs) and dual connectivity (DC).

[0167] 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 higher than 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 correspond to a higher frequency band than FR2.

[0168] 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.

[0169] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 / Xn interface, etc.) or wirelessly (e.g., 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.

[0170] 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.

[0171] The core network 30 may include network functions (Network Functions (NF)) 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 Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0172] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0173] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless 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).

[0174] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0175] 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.

[0176] 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)), or the like may be used as an uplink channel.

[0177] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0178] 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.

[0179] 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 a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0180] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching 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 the CORESET associated with a certain search space based on the search space configuration.

[0181] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0182] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation 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.

[0183] 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.

[0184] 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, as the DL-RS, 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.

[0185] 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 an SS (PSS, SSS) and a PBCH (and a 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 a reference signal.

[0186] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like 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).

[0187] 7 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.

[0188] 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.

[0189] 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.

[0190] 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, control information, sequences, etc. to be transmitted as signals, 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.

[0191] 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.

[0192] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0193] 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 relates, such as an array antenna.

[0194] 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.

[0195] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0196] The transmitter / receiver unit 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.

[0197] The transmitter / receiver unit 120 (transmission processing unit 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.

[0198] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0199] 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 130.

[0200] 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.

[0201] 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.

[0202] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0203] 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.

[0204] 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 implement 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 implement higher-level functions of the physical layer (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may implement the functions of the PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer.

[0205] In the present disclosure, the base station 10 may include a single device that realizes all of the functions of the RU, DU, and CU, or may include multiple devices that each realize 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.

[0206] The transceiver 120 may transmit a channel state information (CSI) report configuration for coherent joint transmission calibration. The controller 110 may control reception of CSI reports based on channel or interference measurements in one or more occasions where a condition is met.

[0207] The transceiver 120 may transmit a channel state information (CSI) report configuration indicating one or more resource sets for at least one of channel measurement and interference measurement for coherent joint transmission calibration. The controller 110 may control reception of the CSI report if, after an event, there is transmission of one or more occasions based on the resource set that is not later than a CSI reference resource.

[0208] (User Terminal) Fig. 8 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 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0209] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, 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.

[0210] 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, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0211] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may 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.

[0212] 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 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.

[0213] 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.

[0214] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0215] 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.

[0216] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0217] The transceiver unit 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.

[0218] The transmitter / receiver unit 220 (transmission processing unit 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.

[0219] 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 if not, it may not be necessary to perform DFT processing as the transmission processing.

[0220] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0221] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0222] The transceiver unit 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, and acquire user data, etc.

[0223] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, 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.

[0224] The measurement unit 223 may derive channel measurements for CSI calculation based on 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 interference measurement resources. The interference measurement resources may be at least one of NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, 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.

[0225] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0226] The transceiver 220 may receive a channel state information (CSI) report configuration for coherent joint transmission calibration. The controller 210 may control transmission of the CSI report based on channel or interference measurements on one or more occasions when a condition is met.

[0227] The configuration may indicate a plurality of CSI-reference signal (RS) resource sets and one or more reporting quantities. The one or more reporting quantities may include at least one of a delay offset, a determination result of the delay offset, a frequency offset, and a phase offset. The CSI report may include values ​​of the one or more reporting quantities based on measurements of one CSI-RS resource set and measurements of other CSI-RS resource sets among the plurality of CSI-RS resource sets.

[0228] If the setting indicates a time constraint for the channel measurement, the condition may include at least one of the following: the one or more occasions are not later than the CSI reference resource; and the one or more occasions are the latest occasions.

[0229] The condition may be associated with the one or more reporting quantities.

[0230] The transceiver 220 may receive a channel state information (CSI) report configuration indicating one or more resource sets for at least one of channel measurement and interference measurement for coherent joint transmission calibration, and the controller 210 may control transmission of the CSI report if, after an event, there is reception of one or more occasions based on the resource set that are not later than a CSI reference resource.

[0231] The one or more occasions may be one occasion, at least one occasion for each of a plurality of CSI-Reference Signal (RS) resources in the resource set, or one occasion for each of a plurality of CSI-RS resources in the resource set for tracking.

[0232] The event may be any of the following: the configuration, a serving cell activation, a bandwidth portion (BWP) change, and an activation of semi-persistent CSI.

[0233] The one or more occasions may be during a discontinuous reception (DRX) active time.

[0234] (Hardware Configuration) Note that 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 be realized by combining software with the single device or the multiple devices.

[0235] 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 described above, the implementation method of each is not particularly limited.

[0236] 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. 9 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.

[0237] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used 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.

[0238] 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.

[0239] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified 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.

[0240] 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), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0241] 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 implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0242] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0243] Storage 1003 is a computer-readable recording medium and may be composed of 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, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0244] 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.

[0245] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0246] 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.

[0247] 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 this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0248] In addition, the devices included in the core network 30 (for example, network nodes that provide NF) may also be realized by the above-mentioned functional block / hardware configuration.

[0249] (Modifications) Note that terms described 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.

[0250] 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.

[0251] 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, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0252] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0253] 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.

[0254] 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.

[0255] 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 the subframe and the 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.

[0256] 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. Note that the definition of TTI is not limited to this.

[0257] 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.

[0258] 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.

[0259] 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.

[0260] 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 greater than or equal to 1 ms.

[0261] 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 be determined based on numerology.

[0262] 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, each of which may be composed of one or more resource blocks.

[0263] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0264] 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.

[0265] A Bandwidth Part (BWP), which may also be referred to as a partial 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 BWP and numbered within the BWP.

[0266] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0267] 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."

[0268] 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.

[0269] 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.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] 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 / specifying (or relating to) the value of the any information.

[0275] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the 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.

[0276] Note that the physical layer signaling may be referred to as 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 referred to as 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).

[0277] 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).

[0278] 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).

[0279] 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.

[0280] 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), these wired and / or wireless technologies are included within the definition of transmission media.

[0281] 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).

[0282] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "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.

[0283] 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. Furthermore, the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0284] 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.

[0285] 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.

[0286] 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.

[0287] Furthermore, in the present disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) property," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.

[0288] In the present disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In the present disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.

[0289] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "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 the TCI may be interchangeable. The spatial relationship information and the spatial relationship may be interchangeable.

[0290] In the present 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.

[0291] 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 partitioned 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 terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0292] 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.

[0293] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 10 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, 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.

[0299] 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 a user.

[0300] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, 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).

[0301] 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.

[0302] 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 (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0303] 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.

[0304] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce 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.

[0305] 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.

[0306] 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 base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0307] 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.

[0308] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device 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)).

[0309] 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.

[0310] 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 an uplink channel and a downlink channel may be read as a sidelink channel.

[0311] 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.

[0312] 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), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0313] 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 particular order presented.

[0314] 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 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0315] 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."

[0316] 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.

[0317] 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.

[0318] 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.

[0319] 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 kind of action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.

[0320] 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...."

[0321] 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 ..." or "do ... (if the above "..." is a to-infinitive, a verb with "to")," etc. "does not expect ..." may be interchangeably read as "be not expected ..." or "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).

[0322] 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.

[0323] 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."

[0324] 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.

[0325] 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."

[0326] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0327] 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.

[0328] 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 "i-th" (i is any integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0329] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0330] 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 approximately zero (immediately after or immediately before). A time offset may also be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after a 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.

[0331] 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.

[0332] 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 terminal having: a receiver that receives a channel state information (CSI) report configuration for coherent joint transmission calibration; and a controller that controls transmission of a CSI report based on channel measurements or interference measurements in one or more occasions that satisfy a condition.

2. The terminal of claim 1, wherein the configuration indicates a plurality of CSI-reference signal (RS) resource sets and one or more reporting quantities, the one or more reporting quantities including at least one of a delay offset, a determination result of the delay offset, a frequency offset, and a phase offset, and the CSI report includes values ​​of the one or more reporting quantities based on measurements of one CSI-RS resource set and measurements of other CSI-RS resource sets among the plurality of CSI-RS resource sets.

3. The terminal of claim 1, wherein, when the setting indicates a time constraint for the channel measurement, the condition includes at least one of the following: the one or more occasions are not later than a CSI reference resource; and the one or more occasions are the latest occasions.

4. The terminal of claim 1, wherein the condition is associated with the one or more reporting quantities.

5. A wireless communication method for a terminal, comprising: receiving a channel state information (CSI) report configuration for coherent joint transmission calibration; and controlling transmission of a CSI report based on channel measurements or interference measurements in one or more occasions where a condition is met.

6. A base station having: a transmitter that transmits channel state information (CSI) report settings for coherent joint transmission calibration; and a controller that controls reception of CSI reports based on channel measurements or interference measurements in one or more occasions that satisfy a condition.

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