Terminal, wireless communication method, base station and system

Abstract

A terminal according to an aspect of this disclosure includes: a reception unit that receives a codebook configuration including a codebook subset restriction (CBSR) setting corresponding to channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a CBSR setting corresponding to CSI measurement for non-coherent joint transmission (NCJT); and a control unit that controls the corresponding CSI measurement on the basis of each of the CBSR settings. An aspect of this disclosure makes it possible to apply an appropriate codebook configuration.

Description

[Technical Field]

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

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

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

[0004] [Non-Patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention [Problem to be solved by the invention]

[0005] In future wireless communication systems (e.g., NR), it is being considered that one or more transmission / reception points (TRPs) (multi-TRPs (MTRPs)) will perform DL transmission to a terminal (user terminal, User Equipment (UE)) using one or more panels (multi-panels). As one form of multi-TRP transmission, non-coherent joint transmission (NCJT) may be used.

[0006] However, when performing at least one of CSI measurements with NCJT and CSI measurements with a single TRP, it is not clear what codebook settings are applied to the UE. If an appropriate codebook setting is not applied, there is a risk that communication throughput will decrease.

[0007] Therefore, the present disclosure provides a terminal and a wireless communication method capable of applying an appropriate codebook setting. 、 base station and systems One of the aims is to provide [Means for solving the problem]

[0008] A terminal according to one embodiment of the present disclosure is configured to configure a codebook subset restriction (CBSR) corresponding to channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a codebook subset restriction (CBSR) corresponding to CSI measurement for noncoherent joint transmission (NCJT). , CSI reference signal resource (CMR) for channel measurement per group CBSR settings and were set separately Codebook settings By higher layer signaling Based on the receiver and the settings of each CBSR, the corresponding CSI report a control unit for controlling the and the CBSR configuration for each CMR group includes a CBSR configuration for two antenna ports corresponding to a first CMR group and a CBSR configuration for more than two antenna ports, and a CBSR configuration for two antenna ports corresponding to a second CMR group and a CBSR configuration for more than two antenna ports. It is characterized by: [Effects of the Invention]

[0009] According to one aspect of the present disclosure, an appropriate codebook setting can be applied. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing the codebook configuration (CodebookConfig) of Rel. 15. [Figure 2] FIG. 2 is a diagram showing the codebook configuration (CodebookConfig) of Rel. 16. [Figure 3] FIG. 3 is a diagram showing a part of the CSI reporting configuration (CSI-ReportConfig) of Rel. 16. [Figure 4] FIG. 4 is a diagram showing an overview of each embodiment / aspect of the present disclosure. [Figure 5] FIG. 5 is a diagram showing a first example of codebook settings in aspect 1-1. [Figure 6] FIG. 6 is a diagram showing a second example of codebook settings in aspect 1-1. [Figure 7] FIG. 7 is a diagram showing a first example of codebook settings in aspect 1-2. [Figure 8] FIG. 8 is a diagram showing a second example of codebook settings in aspect 1-2. [Figure 9] FIG. 9 is a diagram showing a first example of codebook settings in aspect 1-3. [Figure 10] FIG. 10 is a diagram showing a second example of codebook settings in aspect 1-3. [Figure 11] FIG. 11 is a diagram showing a first example of codebook settings in aspect 1-4. [Figure 12] FIG. 12 is a diagram showing a second example of codebook settings in aspect 1-4. [Figure 13] FIG. 13 is a diagram showing a first example of codebook settings in aspects 1-5. [Figure 14] FIG. 14 is a diagram showing a second example of codebook settings in aspects 1-5. [Figure 15] FIG. 15 is a diagram showing an example of codebook settings in the second embodiment, which corresponds to the first example of aspect 1-1. [Figure 16] FIG. 16 is a diagram showing an example of codebook settings according to the second embodiment, which corresponds to the second example of aspect 1-1. [Figure 17] FIG. 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 18] FIG. 18 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 19] FIG. 19 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 20] FIG. 20 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 21] FIG. 21 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

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

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

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

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

[0015] The UE may receive information related to CSI reporting (report configuration information) and control CSI reporting based on the report configuration information. The report configuration information may be, for example, "CSI-ReportConfig" of an information element (IE) of Radio Resource Control (RRC). Note that in the present disclosure, RRC IE may be interchangeably read as RRC parameters, higher layer parameters, etc.

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

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

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

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

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

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

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

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

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

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

[0026] In the space domain, a CSI report may include one or more types of CSI. For example, the CSI may include at least one of a first type (Type 1 CSI) used for single-beam selection and a second type (Type 2 CSI) used for multi-beam selection. The single beam may be rephrased as a single layer, and the multi-beam may be rephrased as multiple beams. Furthermore, Type 1 CSI does not assume multi-user multiple input multiple output (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 can 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 setting for interference (nzp-CSI-RS-ResourceForInterference), and a report quantity (reportQuantity). The channel measurement resource setting, the interference CSI-IM resource setting, and the interference NZP-CSI-RS setting are each associated with a CSI resource configuration (CSI-ResourceConfig, CSI-ResourceConfigId). The CSI resource configuration includes a list of CSI-RS resource sets (csi-RS-ResourceSetList, for example, an NZP-CSI-RS resource set or a CSI-IM resource set).

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

[0034] (Multi-TRP) In NR, one or more Transmission / Reception Points (TRPs) (multi-TRPs (MTRPs)) 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 using one or more panels.

[0035] Note that multiple TRPs may correspond to the same cell identifier (ID), or different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0036] The multi-TRPs (TRP#1, #2) may be connected by an ideal / non-ideal backhaul and exchange information, data, etc. Each TRP of the multi-TRP may transmit a different code word (CW) and a different layer. Non-Coherent Joint Transmission (NCJT) may be used as a form of multi-TRP transmission.

[0037] In the NCJT, for example, TRP1 performs modulation mapping and layer mapping on a first codeword to transmit a first PDSCH using a first number of layers (e.g., two layers) with a first precoding, and TRP2 performs modulation mapping and layer mapping on a second codeword to transmit a second number of layers (e.g., two layers) with a second precoding.

[0038] Note that multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined as partially or completely overlapping in at least one of the time and frequency domains, i.e., a first PDSCH from a first TRP and a second PDSCH from a second TRP may overlap in at least one of the time and frequency resources.

[0039] The first PDSCH and the second PDSCH may be assumed to be not quasi-co-located (Quasi-Co-Location (QCL)). Reception of multiple PDSCHs may be interpreted as simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., QCL type D).

[0040] Multiple PDSCHs from multiple TRPs (which may be referred to as multiple PDSCHs) may be scheduled using one DCI (single DCI (S-DCI), single PDCCH) (single master mode). One DCI may be transmitted from one TRP of the multiple TRPs. Multiple PDSCHs from multiple TRPs may be scheduled using multiple DCIs (multiple DCI (M-DCI), multiple PDCCHs) (multiple master mode). Multiple DCIs may be transmitted from the multiple TRPs respectively. A UE may be assumed to transmit separate CSI reports for each TRP to different TRPs. Such CSI feedback may be referred to as separate feedback, separate CSI feedback, etc. In the present disclosure, "separate" may be interchangeably read as "independent."

[0041] Note that CSI feedback in which CSI reports for both TRPs are transmitted to one TRP may be used, and such CSI feedback may be referred to as joint feedback, joint CSI feedback, or the like.

[0042] For example, in the case of separate feedback, the UE is configured to transmit a CSI report for TRP#1 using one PUCCH (PUCCH1) for TRP#1 and a CSI report for TRP#2 using another PUCCH (PUCCH2) for TRP#2. In the case of joint feedback, the UE transmits a CSI report for TRP#1 and a CSI report for TRP#2 for TRP#1 or #2.

[0043] Such a multi-TRP scenario allows for more flexible transmission control using good quality channels.

[0044] (Codebook settings) The UE is configured with parameters related to the codebook (codebook configuration (CodebookConfig)) by higher layer signaling (RRC signaling). The codebook configuration is included in the CSI report configuration (CSI-ReportConfig) of the higher layer (RRC) parameters.

[0045] FIG. 1 is a diagram showing the codebook configuration (CodebookConfig) of Rel. 15. This example is written using Abstract Syntax Notation One (ASN.1) notation (note that this is merely an example and may not be a complete description, but those skilled in the art will be able to interpret it as a complete description). In this drawing, RRC information elements / parameters with the same names as RRC information elements / parameters already specified in the Rel. 15 / 16 NR specifications (TS 38.331) will be naturally understood by those skilled in the art. The same applies to subsequent similar drawings.

[0046] In the codebook setting, at least one codebook is selected from among type 1 single panel (typeI-SinglePanel), type 1 multi-panel (typeI-MultiPanel), type 2 (typeII), and type 2 port selection (typeII-PortSelection).

[0047] Figure 2 is a diagram showing the codebook configuration (CodebookConfig) for Rel. 16. In addition to the Rel. 15 parameters shown in Figure 1, the codebook configuration for Rel. 16 also includes parameters for Rel. 16 (parameters in CodebookConfig-r16) shown in Figure 2. Parameters similar to those in Figure 1 are omitted from Figure 2.

[0048] As shown in FIGS. 1 and 2, the codebook parameters include parameters related to codebook subset restriction (CBSR) ("Restriction" in FIGS. 1 and 2). The CBSR setting is a bit that indicates which PMI reports are permitted ("1") and which PMI reports are not permitted ("0") for the precoder associated with the CBSR bit. One bit in the CBSR bitmap corresponds to one codebook index / antenna port. Note that the CBSR in the present disclosure may correspond to at least one of the CBSRs in Rel. 15 and 16 shown in FIGS. 1 and 2, or the CBSRs set in Rel. 17 and later.

[0049] (CSI reporting settings) Fig. 3 is a diagram showing a part of the CSI reporting configuration (CSI-ReportConfig) of Rel. 16. The CSI reporting configuration shown in Fig. 3 includes, in addition to the codebook configuration (CodebookConfig) shown in Fig. 2, CSI-RS resources for channel measurement (resourcesForChannelMeasurement (CMR)), CSI-RS resources for interference measurement (csi-IM-ResourcesForInterference (ZP-IMR), nzp-CSI-RS-ResourcesForInterference (NZP-IMR)), etc. Of the parameters shown in Fig. 3, the parameters except for codebookConfig-r16 are also included in the CSI reporting configuration of Rel. 15.

[0050] Rel. 17 considers an extended CSI reporting configuration (CSI-ReportConfig) for CSI measurement / reporting of multi-TRP using NCJT. In this CSI reporting configuration, two CMR groups corresponding to two TRPs are configured. CMRs in a CMR group may be used for at least one of multi-TRP and single-TRP measurements using NCJT. N CMR pairs of NCJT are configured by RRC signaling. UEs may be configured by RRC signaling whether to use a CMR of a CMR pair for single-TRP measurements.

[0051] For CSI reporting related to multi-TRP / panel NCJT measurements configured by a single CSI reporting configuration, it is considered that at least one of the following options 1 and 2 will be supported:

[0052] <Option 1> The UE is configured to report X CSIs (X=0, 1, 2) associated with the single-TRP measurement hypotheses and one CSI associated with the NCJT measurement. If X=2, the two CSIs are associated with two different single-TRP measurements using CMRs from different CMR groups.

[0053] <Option 2> The UE may be configured to report one CSI associated with the best measurement result among the measurement hypotheses for the NCJT and single TRP.

[0054] As described above, in Rel.15 / 16, CBSR is configured for each codebook configuration for each CSI reporting configuration, i.e., CBSR is applied to all CMRs, etc., within the corresponding CSI reporting configuration.

[0055] However, in the CSI reporting configuration for multi-TRP in Rel.17, if the above-mentioned options 1 and 2 are applied, the following measurement configuration may be performed: Option 1 (X=0): Measurement of CSI only for NCJT. Option 1 (X=1): Measure the CSI of the NCJT and the CSI of a single TRP. Option 1 (X = 2): Measurement of the CSI of the NCJT and the CSI of a single TRP (two TRPs). Option 2: Measure both the CSI of the NCJT and the CSI of a single TRP.

[0056] In other words, there is a possibility that at least one of the CSI measurements with NCJT and single TRP is performed. However, if the existing CBSR setting is simply reused, the CBSR setting will be applied to all CMRs measured under different measurement hypotheses (NCJT / single TRP). In this case, there is a risk that an inappropriate codebook setting will be applied to the different measurement hypotheses (NCJT / single TRP).

[0057] Therefore, the present inventors have conceived a terminal including: a receiving unit that receives codebook configurations including a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurements for a single transmission / reception point (single TRP) and a CBSR configuration corresponding to CSI measurements for noncoherent joint transmission (NCJT), and a control unit that controls corresponding CSI measurements based on each CBSR configuration. According to one aspect of the present disclosure, the terminal can apply an appropriate codebook configuration.

[0058] 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.

[0059] 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."

[0060] In the present disclosure, terms such as 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.

[0061] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, information elements (IEs), configurations, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0062] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like, or a combination thereof.

[0063] 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.

[0064] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0065] In this disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In this disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0066] In this disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0067] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interchangeable. "Spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and TCI may be interchangeable with each other.

[0068] In the present disclosure, the terms NCJT, multi-TRP, NCJT using multi-TRP, multi-PDSCH using NCJT, multi-PDSCH, multiple PDSCHs from multi-TRP, etc. may be interchangeable. Note that the multi-PDSCH may refer to multiple PDSCHs in which at least a portion of time resources (e.g., one symbol) overlap, or multiple PDSCHs in which all time resources (e.g., all symbols) overlap, or multiple PDSCHs in which all time resources do not overlap, or multiple PDSCHs carrying the same TB or the same CW, or multiple PDSCHs to which different UE beams (spatial domain receive filters, QCL parameters) are applied.

[0069] In the present disclosure, the terms "multi-TRP," "channel using multi-TRP," "channel using multiple TCI states / spatial relationships," "multi-TRP being enabled by RRC / DCI," "multiple TCI states / spatial relationships being enabled by RRC / DCI," and "at least one of multi-TRP based on a single DCI and multi-TRP based on multiple DCI" may be interchangeable. In the present disclosure, the terms "multi-TRP based on multiple DCI," and "setting a CORESET pool index (CORESETPoolIndex) value of 1 for a CORESET" may be interchangeable.

[0070] In the present disclosure, the terms normal TRP, single TRP, S-TRP, single TRP system, single TRP transmission, single PDSCH, channel using a single TRP, channel using one TCI state / spatial relationship, multi-TRP not being enabled by RRC / DCI, multiple TCI states / spatial relationships not being enabled by RRC / DCI, a CORESETPoolIndex value of 1 not being set for any CORESET and no code point in the TCI field being mapped to two TCI states, communicating with one transmission / reception point, applying a single TRP, and only one TRP of multiple TRPs transmitting to the UE may be read interchangeably.

[0071] In the present disclosure, TRP#1 (first TRP) may correspond to CORESET pool index = 0 or may correspond to the first of two TCI states corresponding to one code point in the TCI field. TRP#2 (second TRP) TRP#1 (first TRP) may correspond to CORESET pool index = 1 or may correspond to the second of two TCI states corresponding to one code point in the TCI field.

[0072] In the present disclosure, single DCI (sDCI), single PDCCH, multi-TRP system based on single DCI, sDCI-based MTRP, and activation of two TCI states on at least one TCI codepoint may be read interchangeably.

[0073] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, mDCI-based MTRP, and setting two CORESET pool indices or CORESET pool index=1 (or a value greater than or equal to 1) may be read interchangeably.

[0074] The terms "single TRP measurement," "single TRP measurement hypothesis," and "CSI measurement for single TRP" may be interchangeable. The terms "NCJT measurement," "NCJT measurement hypothesis," "CSI measurement for NCJT," and "CSI measurement for multi-TRP using NCJT" may be interchangeable. The terms "CSI measurement" and "CSI report" may be interchangeable.

[0075] In the present disclosure, a CMR pair may be, for example, a pair of a CMR (corresponding to TRP#1) in a first CMR group and a CMR (corresponding to TRP#2) in a second CMR group. CBSR and CBSR settings may be interchangeable. The number of transmissions (TX) in the codebook settings of the present disclosure may correspond to the number of antenna ports. CMR group and TRP may be interchangeable. The first CMR group and the first TRP (TRP#1) may be interchangeable. The second CMR group and the second TRP (TRP#2) may be interchangeable.

[0076] (Wireless communication method) In the embodiments of the present disclosure, the extension of the CBSR setting for Type I Single Panel (type I-Single Panel) will be mainly described, but the same can be applied to the CBSR setting for Type I Multi Panel (type I-Multi Panel), the CBSR setting for Type II, the CBSR setting for Type II Port Selection (type II-Port Selection), and the new CBSR setting defined in Rel. 17 and later. The configuration of each CBSR setting (parameters, number of bits, etc. within the CBSR setting) may be the same as that of Rel. 15 / 16.

[0077] The CSI reporting configuration (codebook configuration) may include multiple CBSR configurations, each corresponding to at least one of the CMR group (TRP) and measurement hypothesis (single TRP measurement or NCJT measurement).

[0078] FIG. 4 is a diagram illustrating an overview of each embodiment / aspect of the present disclosure. FIG. 4 illustrates how CBSRs are configured in each embodiment / aspect in various cases. CBSR XY in FIG. 4 indicates the type of CBSR, and if X and Y are the same, the same (common) CBSR is configured. That is, one CBSR is configured in the 0th embodiment, two CBSRs are configured in aspects 1-1 and 1-2 of the first embodiment, three CBSRs are configured in aspects 1-3 and 1-4 of the first embodiment, and four CBSRs are configured in aspect 1-5 of the first embodiment. Details of each embodiment / aspect will be described later.

[0079] <0th embodiment> The UE may receive a CSI reporting configuration corresponding to an existing (e.g., Rel. 15 or Rel. 16) CBSR configuration through higher layer signaling and use it for CSI reporting. In this case, the UE may assume / interpret / decide that the CBSR configuration applies to both single TRP measurements (both TRP#1 and TRP#2) and NCJT measurements.

[0080] First Embodiment The UE may receive, via higher layer signaling, a codebook configuration (CSI reporting configuration including a codebook configuration) including a CBSR configuration corresponding to a single TRP measurement (CSI measurement for a single TRP) and a CBSR configuration corresponding to an NCJT measurement (CSI measurement for an NCJT), and may control the corresponding CSI measurement / reporting based on the configuration of each CBSR.

[0081] Regarding the CBSR setting in the codebook setting, any of the following aspects 1-1 to 1-5 may be applied. Note that the codebook setting shown in each aspect may be applied to, for example, 3GPP Rel. 17 or Rel. 18 or later.

[0082] The CBSR configuration of the present disclosure may be included in a configuration other than the codebook configuration. For example, the CBSR configuration of the present disclosure may be included in an RRC parameter related to multi-TRP, a PDSCH configuration (PDSCH-Config), a PDCCH configuration (PDCCH-Config), etc.

[0083] The present disclosure can be applied to either Option 1 (X=0, 1, 2) or Option 2, and the same or different CBSR settings can be applied to each option. The multiple CBSR settings of the present disclosure may also be the same for each CMR / each CMR pair.

[0084] [Aspect 1-1] The UE may receive codebook configuration including CBSR configuration for each CMR group (TRP) via higher layer signaling. For example, the UE applies a corresponding / associated CBSR to a single TRP measurement (corresponding to the first or second CMR group). For NCJT measurements corresponding to a CMR pair, the UE applies a first CBSR corresponding to the first CMR group to the CMR measurement of the first CMR group and a second CBSR corresponding to the second CMR group to the CMR measurement of the second CMR group.

[0085] That is, in embodiment 1-1, the CBSR for single TRP measurement and the CBSR for NCJT measurement are common, but the CBSR may be different for each corresponding CMR group (TRP).

[0086] Fig. 5 is a diagram showing a first example of codebook configuration of aspect 1-1. In the example of Fig. 5, the second type 1 single panel configuration includes a two-transmission (transmission using two ports) CBSR (two TX CBSR) corresponding to the first CMR group (TRP#1), a two-transmission CBSR (two TX CBSR) corresponding to the second CMR group (TRP#2), a CBSR with more than two transmissions (transmission using more than two ports) (more than two TX CBSR n1-n2) corresponding to the first CMR group (TRP#1), and a CBSR with more than two transmissions (more than two TX CBSR n1-n2) corresponding to the second CMR group (TRP#2).

[0087] Fig. 6 is a diagram showing a second example of codebook settings in aspect 1-1. In the example of Fig. 6, a two-transmission CBSR (two TX CBSR) and a more-than-two-transmission CBSR (more than two TX CBSR n1-n2) are set as settings for the first (second) CMR group (TRP#1(#2)) of Type 1 single panel. In other words, in the example of Fig. 6, a CBSR is set (described) separately for each CMR group (TRP).

[0088] That is, in this aspect, one codebook setting may include two CBSRs for a certain number of transmissions (eg, two or more).

[0089] According to aspect 1-1, by sharing CBSRs corresponding to the same CMR group (TRP), the number of CBSRs set can be reduced, and an appropriate codebook / CBSR can be set for each CMR group (TRP).

[0090] [Aspect 1-2] The UE may receive a codebook configuration including a CBSR configuration for each measurement hypothesis (single-TRP measurement hypothesis / NCJT measurement hypothesis). That is, the UE may receive a codebook configuration in which a CBSR configuration corresponding to a CSI measurement for a single TRP and a CBSR configuration corresponding to a CSI measurement for an NCJT are separately configured via higher layer signaling. For example, the UE applies a corresponding / associated first CBSR to a single TRP measurement (corresponding to the first or second CMR group). Furthermore, the UE applies a corresponding second CBSR to CMRs of multiple CMR groups for NCJT measurements corresponding to a CMR pair.

[0091] That is, in embodiment 1-2, the CBSR for single TRP measurement and the CBSR for NCJT measurement may be different, and the CBSR corresponding to the same measurement hypothesis but different CMR groups (TRPs) may be the same.

[0092] 7 is a diagram illustrating a first example of a codebook configuration for aspect 1-2. In the example of FIG. 7, the Type 1 single-panel configuration includes a two-transmit CBSR (two TX CBSR) corresponding to a single TRP measurement hypothesis, a two-transmit CBSR (two TX CBSR) corresponding to an NCJT measurement hypothesis, a CBSR with more than two transmits (more than two TX CBSR n1-n2) corresponding to a single TRP measurement hypothesis, and a CBSR with more than two transmits (more than two TX CBSR n1-n2) corresponding to an NCJT measurement hypothesis.

[0093] Fig. 8 is a diagram showing a second example of codebook configuration in aspect 1-2. In the example of Fig. 8, a two-transmit CBSR (two TX CBSR) and a more-than-two-transmit CBSR (more than two TX CBSR n1-n2) are configured as configurations corresponding to a single TRP measurement hypothesis of Type 1 single panel and a configuration corresponding to an NCJT measurement hypothesis of Type 1 single panel, respectively. In other words, in the example of Fig. 8, a CBSR is configured (described) separately for each measurement hypothesis (single TRP measurement hypothesis / NCJT measurement hypothesis).

[0094] That is, in this aspect, one codebook setting may include two CBSRs for a certain number of transmissions (eg, two or more).

[0095] According to aspect 1-2, by sharing CBSRs corresponding to the same measurement hypothesis (single TRP measurement hypothesis / NCJT measurement hypothesis), the number of CBSRs set can be reduced, and an appropriate codebook / CBSR can be set for each measurement hypothesis.

[0096] [Aspect 1-3] The UE may receive codebook configurations including separate CBSR configurations for single TRP measurements corresponding to the first CMR group (TRP#1), single TRP measurements corresponding to the second CMR group (TRP#2), and NCJT measurements via higher layer signaling. For example, the UE applies corresponding / associated CBSRs to the single TRP measurements corresponding to the first CMR group and the single TRP measurements corresponding to the second CMR group, respectively. Also, the UE applies corresponding CBSRs to CMRs of multiple CMR groups for NCJT measurements corresponding to CMR pairs.

[0097] That is, in aspects 1-3, the CBSR for single TRP measurement corresponding to the first CMR group (TRP#1) may be different from the CBSR for single TRP measurement corresponding to the second CMR group (TRP#2).Also, the CBSR for NCJT measurement corresponding to different CMR groups (TRPs) may be the same.

[0098] Figure 9 is a diagram illustrating a first example of a codebook configuration for aspects 1-3. In the example of Figure 9, the Type 1 single-panel configuration includes a two-transmit CBSR (two TX CBSR) corresponding to a first CMR group and a single TRP measurement hypothesis, a two-transmit CBSR (two TX CBSR) corresponding to a second CMR group and a single TRP measurement, a two-transmit CBSR (two TX CBSR) corresponding to an NCJT measurement hypothesis, a CBSR of more than two transmits (more than two TX CBSR n1-n2) corresponding to a first CMR group and a single TRP measurement, a CBSR of more than two transmits (more than two TX CBSR n1-n2) corresponding to a second CMR group and a single TRP measurement, and a CBSR of more than two transmits (more than two TX CBSR n1-n2) corresponding to an NCJT measurement hypothesis.

[0099] Fig. 10 is a diagram showing a second example of codebook configuration for aspects 1-3. In the example of Fig. 10, a two-transmission CBSR (two TX CBSR) and a more-than-two-transmission CBSR (more than two TX CBSR n1-n2) are configured as configurations corresponding to a first CMR group and a single TRP measurement hypothesis for a type 1 single panel, a configuration corresponding to a second CMR group and a single TRP measurement hypothesis for a type 1 single panel, and a configuration corresponding to an NCJT measurement hypothesis for a type 1 single panel, respectively. That is, in the example of Fig. 10, for a single TRP measurement hypothesis, a CBSR is configured (described) separately for each CMR group, and a CBSR for an NCJT measurement hypothesis is configured (described) separately from the CBSR for the single TRP measurement hypothesis.

[0100] That is, in this aspect, one codebook setting may include three CBSRs for a certain number of transmissions (eg, two or more).

[0101] According to aspects 1-3, for single TRP measurement hypotheses, an appropriate codebook / CBSR is set for each CMR group (TRP), and the CBSR corresponding to the NCJT measurement hypotheses is made common, thereby reducing the number of CBSRs set.

[0102] [Aspect 1-4] The UE may receive codebook configurations including separate CBSR configurations for a single TRP measurement, an NCJT measurement corresponding to a first CMR group (TRP#1), and an NCJT measurement corresponding to a second CMR group (TRP#2) via higher layer signaling. For example, the UE applies a corresponding / associated CBSR to a single TRP measurement (corresponding to the first or second CMR group). The UE also applies a corresponding CBSR to an NCJT measurement corresponding to a CMR pair and corresponding to the first CMR group (TRP#1), and an NCJT measurement corresponding to a CMR pair and corresponding to the second CMR group (TRP#1).

[0103] That is, in aspects 1-4, the CBSRs for single TRP measurements corresponding to different CMR groups (TRPs) may be common, and the CBSR for NCJT measurements corresponding to the first CMR group (TRP#1) may be different from the CBSR for NCJT measurements corresponding to the second CMR group (TRP#2).

[0104] Fig. 11 is a diagram illustrating a first example of codebook configurations for aspects 1 to 4. In the example of Fig. 11, Type 1 single-panel configurations include a CBSR corresponding to a single TRP measurement hypothesis (two TX CBSR), a two-transmit CBSR corresponding to a first CMR group and NCJT measurement hypothesis (two TX CBSR), a two-transmit CBSR corresponding to a second CMR group and NCJT measurement hypothesis (two TX CBSR), a CBSR with more than two transmits for a single TRP measurement (more than two TX CBSR n1-n2), a CBSR with more than two transmits corresponding to a first CMR group and NCJT measurement hypothesis (more than two TX CBSR n1-n2), and a CBSR with more than two transmits corresponding to a second CMR group and NCJT measurement hypothesis (more than two TX CBSR n1-n2).

[0105] Fig. 12 is a diagram showing a second example of codebook settings for aspects 1-4. In the example of Fig. 12, a two-transmission CBSR (two TX CBSR) and a more-than-two-transmission CBSR (more than two TX CBSR n1-n2) are set as settings corresponding to a single TRP measurement hypothesis for a type 1 single panel, a setting corresponding to a first CMR group and NCJT measurement hypothesis for a type 1 single panel, and a setting corresponding to a second CMR group and NCJT measurement hypothesis for a type 1 single panel, respectively. That is, in the example of Fig. 12, a CBSR for a single TRP measurement hypothesis is set (described), and a CBSR for the NCJT measurement hypothesis is set (described) separately for each CMR group.

[0106] That is, in this aspect, one codebook setting may include three CBSRs for a certain number of transmissions (eg, two or more).

[0107] According to aspects 1-4, for single TRP measurement hypotheses, the number of CBSRs set can be reduced by standardizing the corresponding CBSRs, and for NCJT measurement hypotheses, an appropriate codebook / CBSR can be set for each CMR group (TRP).

[0108] [Aspect 1-5] The UE may receive, via higher layer signaling, codebook configurations including separate CBSR configurations for a single TRP measurement corresponding to the first CMR group (TRP#1), a single TRP measurement corresponding to the second CMR group (TRP#2), an NCJT measurement corresponding to the first CMR group (TRP#1), and an NCJT measurement corresponding to the second CMR group (TRP#2). For example, the UE applies a CBSR corresponding to / associated with each of the single TRP measurement corresponding to the first CMR group and the single TRP measurement corresponding to the second CMR group. The UE also applies a corresponding CBSR to each of the NCJT measurement corresponding to the CMR pair and the first CMR group (TRP#1), and the NCJT measurement corresponding to the CMR pair and the second CMR group (TRP#1).

[0109] In other words, in aspects 1-5, the CBSR for single TRP measurement corresponding to the first CMR group (TRP#1), the CBSR for single TRP measurement corresponding to the second CMR group (TRP#2), the CBSR for NCJT measurement corresponding to the first CMR group (TRP#1), and the CBSR for NCJT measurement corresponding to the second CMR group (TRP#2) may be different from each other.

[0110] Fig. 13 is a diagram illustrating a first example of a codebook configuration for aspects 1 to 5. In the example of Fig. 13, a Type 1 single-panel configuration includes a CBSR (two TX CBSR) corresponding to a first CMR group and a single TRP measurement hypothesis, a CBSR (two TX CBSR) corresponding to a second CMR group and a single TRP measurement hypothesis, a two-transmit CBSR (two TX CBSR) corresponding to a first CMR group and an NCJT measurement hypothesis, and a two-transmit CBSR (two TX CBSR) corresponding to a second CMR group and an NCJT measurement hypothesis.

[0111] Also, in the example of Figure 13, the Type 1 single panel configuration includes a CBSR with more than two transmissions (more than two TX CBSR n1-n2) corresponding to a first CMR group and a single TRP measurement, a CBSR with more than two transmissions (more than two TX CBSR n1-n2) corresponding to a second CMR group and a single TRP measurement, a CBSR with more than two transmissions (more than two TX CBSR n1-n2) corresponding to a first CMR group and an NCJT measurement hypothesis, and a CBSR with more than two transmissions (more than two TX CBSR n1-n2) corresponding to a second CMR group and an NCJT measurement hypothesis.

[0112] Fig. 14 is a diagram showing a second example of codebook settings for aspects 1-5. In the example of Fig. 14, a two-transmission CBSR (two TX CBSR) and a more-than-two-transmission CBSR (more than two TX CBSR n1-n2) are set as settings corresponding to the first CMR group and single TRP measurement hypothesis of the type 1 single panel, the second CMR group and single TRP measurement hypothesis of the type 1 single panel, the first CMR group and NCJT measurement hypothesis of the type 1 single panel, and the second CMR group and NCJT measurement hypothesis of the type 1 single panel, respectively. That is, in the example of Fig. 14, a CBSR is set (described) separately for each TRP for the single TRP measurement hypothesis, and a CBSR is set (described) separately for each CMR group for the NCJT measurement hypothesis, separate from the CBSR for the single TRP measurement hypothesis.

[0113] That is, in this aspect, one codebook setting may include four CBSRs for a certain number of transmissions (eg, two or more).

[0114] According to aspects 1-5, for single-TRP measurement hypotheses, an appropriate codebook / CBSR can be set for each CMR group (TRP). Also, for NCJT measurement hypotheses, an appropriate codebook / CBSR can be set for each CMR group (TRP).

[0115] <Second embodiment> In the first embodiment, the codebook settings shown in each aspect are applied to, for example, 3GPP Rel. 17 or Rel. 18 or later, but the codebook settings may include settings for Rel. 15 / 16 and settings added in Rel. 17 or Rel. 18 or later. Note that "r17" in the parameters of this embodiment means Rel. 17, but parameters corresponding to other releases may also be applied.

[0116] FIG. 15 is a diagram illustrating an example of codebook configuration of the second embodiment, corresponding to the first example of aspect 1-1. In the example of FIG. 15, the Type 1 single-panel configuration includes a two-transmit CBSR ("twoTX-CodebookSubsetRestriction" in "two") that reuses the configuration of Rel. 15 / 16, and a two-transmit CBSR ("twoTX-CodebookSubsetRestriction" in "two-r17") that is added in Rel. 17. The CBSR configuration in "two" may correspond to the first CMR group when NCJT CSI measurement is configured. The CBSR configuration in "two-r17" may correspond to the second CMR group when NCJT CSI measurement is configured.

[0117] Furthermore, in the example of FIG. 15, the Type 1 single panel codebook configuration includes a CBSR for more than two transmissions ("n1-n2" in "moreThanTwo") that reuses the configuration from Rel. 15 / 16, and a CBSR for more than two transmissions ("n1-n2" in "moreThanTwo-r17") that is added in Rel. 17. The CBSR configuration in "moreThanTwo" may correspond to the first CMR group when NCJT CSI measurement is configured. The CBSR configuration in "moreThanTwo-r17" may correspond to the second CMR group when NCJT CSI measurement is configured.

[0118] Fig. 16 is a diagram showing an example of codebook settings of the second embodiment, corresponding to a second example of aspect 1-1. The example of Fig. 16 includes a type 1 single panel setting (settings in "typeI-SinglePanel") that reuses the settings of Rel. 15 / 16, and a type 1 single panel codebook setting ("typeI-SinglePanel-r17") that is added in Rel. 17. The setting in "typeI-SinglePanel" may correspond to the first CMR group when NCJT CSI measurement is configured. The setting in "typeI-SinglePanel-r17" may correspond to the second CMR group when NCJT CSI measurement is configured.

[0119] Furthermore, for the examples of Aspect 1-2 to Aspect 1-5, the codebook configuration may also include the configuration for Rel. 15 / 16 and the configuration added after Rel. 17 or Rel. 18. For example, in Aspect 1-2, the configuration for Rel. 15 / 16 may be reused for the CBSR for single TRP measurement, and the CBSR for NCJT measurement may be used for the configuration added after Rel. 17 or Rel. 18.

[0120] <UE capability> The UE may transmit (report) UE capability information indicating whether it supports at least one of each process in the present disclosure to the network (base station). At least one of each example in the present disclosure may be applied only to the UE that has transmitted the specific UE capability information or the UE that supports the specific UE capability. Also, the UE may receive information for instructing / setting at least one of each example in the present disclosure by upper layer signaling / physical layer signaling. The information may correspond to the UE capability information transmitted by the UE. The UE capability information may be, for example, at least one of (1) and (2).

[0121] (1) Whether it supports at least one of the 0th embodiment, Aspect 1-1 to 1-5 of the 1st embodiment, and each example of the 2nd embodiment. (2) Whether it supports the application of the existing (e.g., Rel. 15 / 16) CBSR configuration in the CSI report setting for NCJT.

[0122] (Wireless communication system) Hereinafter, the configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0123] 17 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication 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).

[0124] Furthermore, the wireless communication system 1 may 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.

[0125] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0126] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0127] 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 locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0128] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0129] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0130] 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.

[0131] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 interface, or the like) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0132] 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.

[0133] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0134] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0135] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0136] 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.

[0137] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0138] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

[0139] 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.

[0140] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0141] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0142] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0143] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0144] 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.

[0145] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0146] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0147] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0148] (base station) 18 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.

[0149] 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.

[0150] 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.

[0151] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0152] 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.

[0153] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0154] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0155] 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.

[0156] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0157] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0158] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0159] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0160] 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 .

[0161] 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.

[0162] 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.

[0163] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0164] 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.

[0165] In addition, the transceiver unit 120 may transmit a codebook configuration including a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a CBSR configuration corresponding to CSI measurement for noncoherent joint transmission (NCJT).

[0166] The control unit 110 may control the reception of the corresponding CSI report based on the configuration of each CBSR.

[0167] (user terminal) 19 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0168] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0169] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0170] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0171] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0172] 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.

[0173] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0174] 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.

[0175] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0176] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0177] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0178] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0179] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0180] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0181] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0182] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0183] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0184] In addition, the transceiver unit 220 may receive a codebook configuration including a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurements for a single transmission / reception point (single TRP) and a CBSR configuration corresponding to CSI measurements for noncoherent joint transmission (NCJT).

[0185] The transceiver 220 may receive the codebook configuration including the CBSR configuration for each CSI reference signal resource (CMR) group for channel measurement via higher layer signaling.

[0186] The transceiver 220 may receive the codebook configuration, in which the CBSR configuration corresponding to the CSI measurement for the single TRP and the CBSR configuration corresponding to the CSI measurement for the NCJT are configured separately, via higher layer signaling.

[0187] The transceiver unit 220 may receive the codebook configuration via higher layer signaling, the codebook configuration including separate CBSR configurations corresponding to the CSI measurement for the single TRP corresponding to the first CMR group, the CSI measurement for the single TRP corresponding to the second CMR group, the CSI measurement for the NCJT corresponding to the first CMR group, and the CSI measurement for the NCJT corresponding to the second CMR group.

[0188] The control unit 210 may control the corresponding CSI measurement based on the setting of each CBSR.

[0189] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0190] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0191] For example, a base station, a user terminal, or the like 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. 20 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, and the like.

[0192] In the present disclosure, terms such as apparatus, circuit, device, section, and unit 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.

[0193] 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.

[0194] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0195] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0196] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0197] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0198] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0199] 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.

[0200] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0201] 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.

[0202] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0203] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0204] 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.

[0205] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0206] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol), and may be a time unit based on numerology.

[0207] 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.

[0208] 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.

[0209] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0210] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0215] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0216] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0217] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0218] 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.

[0219] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0220] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0221] 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."

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0229] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0230] 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).

[0231] 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).

[0232] 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.

[0233] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0234] 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).

[0235] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0236] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0237] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0238] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 21 is a diagram showing an example of a vehicle according to an embodiment. As shown in FIG. 21, a 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.

[0244] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0245] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0246] 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.

[0247] 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 various types of 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 types of information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0248] The driving assistance system unit 64 is configured with various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), Artificial Intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0249] 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.

[0250] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10, user terminal 20, etc. Furthermore, the communication module 60 may be, for example, the above-mentioned base station 10, user terminal 20, etc. (it may function as the base station 10, user terminal 20, etc.).

[0251] The communication module 60 may transmit signals from the various sensors 50-58 input to the electronic control unit 49 and information obtained based on these signals to an external device via wireless communication.

[0252] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The communication module 60 also stores the various information received from the 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.

[0253] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as uplink channel and downlink channel may be read as sidelink channel.

[0254] 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.

[0255] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0256] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the specific order presented.

[0257] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to systems that use 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0258] 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."

[0259] 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.

[0260] 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.

[0261] 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.

[0262] Also, "decision" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "decision" may be considered to be "deciding" on some action.

[0263] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0264] 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."

[0265] 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.

[0266] 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."

[0267] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0268] 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.

[0269] 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 invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a receiving unit that receives, via higher layer signaling, codebook configurations in which a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a CBSR configuration for each CSI reference signal resource (CMR) group for channel measurement corresponding to CSI measurement for non-coherent joint transmission (NCJT) are separately configured; a control unit for controlling a corresponding CSI report based on the setting of each CBSR; The CBSR setting for each CMR group includes a CBSR setting for two antenna ports corresponding to a first CMR group and a CBSR setting for more than two antenna ports, and a CBSR setting for two antenna ports corresponding to a second CMR group and a CBSR setting for more than two antenna ports. Terminal.

2. Further comprising a transmitter that transmits capability information indicating whether a CBSR setting for each CMR group is supported, the capability information corresponding to the CSI measurement for the NCJT. The terminal according to claim 1 .

3. receiving, via higher layer signaling, codebook configurations in which a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurements for a single transmission / reception point (single TRP) and a CBSR configuration for each CSI reference signal resource (CMR) group for channel measurement corresponding to CSI measurements for non-coherent joint transmission (NCJT) are separately configured; and controlling a corresponding CSI report based on the configuration of each CBSR; The CBSR setting for each CMR group includes a CBSR setting for two antenna ports corresponding to a first CMR group and a CBSR setting for more than two antenna ports, and a CBSR setting for two antenna ports corresponding to a second CMR group and a CBSR setting for more than two antenna ports. The device's wireless communication method.

4. a transmitter that transmits, by higher layer signaling, codebook configurations in which a codebook subset restriction (CBSR) configuration corresponding to a channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a CBSR configuration for each CSI reference signal resource (CMR) group for channel measurement corresponding to a CSI measurement for a non-coherent joint transmission (NCJT) are separately configured; a control unit that controls reception of a corresponding CSI report based on the setting of each CBSR; The CBSR setting for each CMR group includes a CBSR setting for two antenna ports corresponding to a first CMR group and a CBSR setting for more than two antenna ports, and a CBSR setting for two antenna ports corresponding to a second CMR group and a CBSR setting for more than two antenna ports. Base station.

5. A system including a terminal and a base station, The terminal a receiving unit that receives, via higher layer signaling, codebook configurations in which a codebook subset restriction (CBSR) configuration corresponding to channel state information (CSI) measurement for a single transmission / reception point (single TRP) and a CBSR configuration for each CSI reference signal resource (CMR) group for channel measurement corresponding to CSI measurement for non-coherent joint transmission (NCJT) are separately configured; a control unit for controlling a corresponding CSI report based on the setting of each CBSR; The CBSR setting for each CMR group includes a CBSR setting for two antenna ports corresponding to a first CMR group and a CBSR setting for more than two antenna ports, and a CBSR setting for two antenna ports corresponding to a second CMR group and a CBSR setting for more than two antenna ports; The base station a control unit for controlling reception of the CSI report; system.

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