Terminal, wireless communication method, base station and system

Abstract

A terminal according to one aspect of the present disclosure comprises: a control unit that carries out control so as to report at least one of a first report value pertaining to a UL coherent type for each band, a second report value pertaining to a UL coherent type for each band combination, and a third report value pertaining to a UL coherent type for each band in a band combination; and a reception unit that receives information pertaining to a codebook type which is set on the basis of at least one of the first report value, the second report value, and the third report value.

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), 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 Rel. 15 NR, when applying UL MIMO, it is supported to report the coherence type (e.g., non-coherent, partial coherent, full coherent) per band as UE capability.

[0006] In Rel.16 / 17 NR and later, it is expected that the coherence type will be reported for each band combination. However, if band combination reporting is supported / applied, how to control this reporting becomes an issue. If UE capability reporting is not performed appropriately taking band combinations into account, communication quality may deteriorate.

[0007] Therefore, the present disclosure provides a terminal and a wireless communication method that can appropriately report UE capabilities even when band combinations are taken into consideration. 、 base station and systems One of the aims is to provide [Means for solving the problem]

[0008] A terminal according to one aspect of the present disclosure includes: , Ba UL coherent type for each band combination Report Notice Value a control unit that controls the device to report the , the above-mentioned report Notice To the value The codebook is set based on subset a receiving unit that receives information about the , the above-mentioned report Notice Value and , UL coherent type for each band Reported value Band combinations for different systems The reporting of is controlled separately from other reporting values ​​of . [Effects of the Invention]

[0009] According to one aspect of the present disclosure, UE capabilities can be appropriately reported even when band combinations are taken into consideration. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing an example of the association between coherent types and TPMI indices. [Figure 2] 2A and 2B are diagrams showing an example of reporting of report values ​​(for example, first to third report values) related to the coherence type. [Figure 3] FIG. 3 is a diagram for explaining control of whether or not to report the report values ​​(for example, the first to third report values) related to the coherent type. [Figure 4] FIG. 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 5] FIG. 5 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] (PUSCH precoder) In NR, it is being considered that a UE will support at least one of codebook (CB)-based transmission and non-codebook (NCB)-based transmission.

[0012] For example, it is being considered that a UE uses at least a sounding reference signal (SRS) resource index (SRI) to determine a precoder (precoding matrix) for CB-based and / or NCB-based Physical Uplink Shared Channel (PUSCH) transmission.

[0013] In the case of CB-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI, a Transmitted Rank Indicator (TRI), a Transmitted Precoding Matrix Indicator (TPMI), etc. In the case of NCB-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI.

[0014] The SRI, TRI, TPMI, etc. may be notified to the UE using Downlink Control Information (DCI). The SRI may be specified by the SRS Resource Indicator field (SRI field) of the DCI, or may be specified by the parameter "srs-ResourceIndicator" included in the RRC information element "ConfiguredGrantConfig" of the configured grant PUSCH. The TRI and TPMI may be specified by the "Precoding information and number of layers" field of the DCI.

[0015] The UE may report UE capability information related to the coherence type, and the base station may configure the coherence type based on the UE capability information through higher layer signaling. The UE capability information may be information on the coherence type used by the UE in PUSCH transmission (which may be represented by the RRC parameter "pusch-TransCoherence").

[0016] 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.

[0017] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), etc.

[0018] The UE may determine the precoder to be used for PUSCH transmission based on coherent type information (which may be represented by the RRC parameter "codebookSubset") included in PUSCH configuration information ("PUSCH-Config" information element of RRC signaling) notified by higher layer signaling. The UE may be configured with a subset of the PMI specified by the TPMI by the codebookSubset.

[0019] In addition, the coherence type may be specified by any one of full coherence (fully coherent, coherent), partial coherence, and non-coherence (non-coherent), or a combination of at least two of these (for example, it may be expressed by parameters such as "fully and partial and non-coherent" or "partial and non-coherent").

[0020] Fully coherent may mean that all antenna ports used for transmission are synchronized (may be expressed as being able to match the phase, using the same precoder, etc.). Partially coherent may mean that some of the antenna ports used for transmission are synchronized, but those some ports cannot be synchronized with other ports. Noncoherent may mean that each antenna port used for transmission cannot be synchronized.

[0021] Note that a UE that supports the fully coherent coherent type may be assumed to support the partially coherent and non-coherent coherent types, and a UE that supports the partially coherent coherent type may be assumed to support the non-coherent coherent type.

[0022] In the present disclosure, the coherent type may be interpreted as a precoder type, coherency, PUSCH transmission coherence, coherence type, codebook type, codebook subset, codebook subset type, or the like.

[0023] The UE may determine, from multiple precoders (which may also be called precoding matrices, codebooks, etc.) for CB-based transmission, a precoding matrix corresponding to a TPMI index obtained from the DCI (e.g., DCI format 0_1, etc.) that schedules the UL transmission.

[0024] Fig. 1 is a diagram showing an example of the association between coherence types and TPMI indices. Fig. 1 corresponds to a table of precoding matrix W for single-layer transmission using four antenna ports in DFT-s-OFDM (Discrete Fourier Transform spread OFDM, in which transform precoding is effective).

[0025] In FIG. 1, when the codebook type (codebookSubset) is fullyAndPartialAndNonCoherent, the UE is notified of a TPMI of one of 0 to 27 for single layer transmission. When the codebook type is partialAndNonCoherent, the UE is configured with a TPMI of one of 0 to 11 for single layer transmission. When the codebook type is noncoherent, the UE is configured with a TPMI of one of 0 to 3 for single layer transmission.

[0026] Figure 1 is a table specified in Rel. 15 NR. In this table, the fully coherent transmission power corresponding to indexes 12 to 27 is set to 1 (=(1 / 2) 2 *4), the partial coherent transmission power corresponding to indexes 4 to 11 is 1 / 2 (=(1 / 2) 2 *2), and the non-coherent transmission power corresponding to indexes 0 to 3 is 1 / 4 (=(1 / 2) 2 *1).

[0027] In other words, according to the Rel.15 NR specifications, when a UE uses multiple ports for codebook-based transmission, using some codebooks may result in lower transmission power (full power transmission not possible) compared to the case of a single port.

[0028] As shown in Figure 1, a precoding matrix in which only one element in each column is not zero may be called a non-coherent codebook. A precoding matrix in which a predetermined number (not all) of elements in each column are not zero may be called a partially coherent codebook. A precoding matrix in which all elements in each column are not zero may be called a fully coherent codebook.

[0029] Non-coherent and partially coherent codebooks may be referred to as antenna selection precoders, and fully coherent codebooks may be referred to as non-antenna selection precoders.

[0030] In the present disclosure, a partially coherent codebook may correspond to a codebook (precoding matrix) corresponding to a TPMI specified by DCI for codebook-based transmission by a UE configured with a partially coherent codebook subset (e.g., RRC parameter "codebookSubset"="partialAndNonCoherent"), excluding a codebook corresponding to a TPMI specified by a UE configured with a non-coherent codebook subset (e.g., RRC parameter "codebookSubset"="nonCoherent") (i.e., in the case of single-layer transmission with four antenna ports, codebooks with TPMI=4 to 11).

[0031] In the present disclosure, a fully coherent codebook may refer to a codebook (precoding matrix) corresponding to a TPMI specified by DCI for codebook-based transmission by a UE configured with a fully coherent codebook subset (e.g., RRC parameter "codebookSubset"="fullyAndPartialAndNonCoherent"), excluding a codebook corresponding to a TPMI specified by a UE configured with a partially coherent codebook subset (e.g., RRC parameter "codebookSubset"="partialAndNonCoherent") (i.e., in the case of single-layer transmission with four antenna ports, codebooks with TPMI=12 to 27).

[0032] (UE capability report) The UE reports its own capability information for each function used in communication to the network (e.g., a base station or an operator). The UE capability information reported for each function is reported in various units, such as per UE (per UE) or per band (per band).

[0033] The network controls wireless communication (e.g., transmission / reception) with each UE based on the capability information reported from the UE. On the other hand, even if the UE reports UE capability information that is not used in the wireless communication system to the network (e.g., UE capability information for a band that is not in use), the network cannot use the reported UE capability information, resulting in useless information being reported.

[0034] Therefore, before the UE reports its own UE capability information, the network may notify the UE of information regarding communication conditions (e.g., supported bands) used / supported by the network (or a communication system used by the network) (see FIG. 1). The UE may determine the content / value of the UE capability information (e.g., UECapabilityInformation) to be reported to the network based on the information notified from the network.

[0035] The information transmitted from the network to the UE may be called a UE capability inquiry (e.g., UECapabilityEnquiry) or a UE capability request filter (e.g., UE-CapabilityRequestFilter).

[0036] That is, the network may notify the UE in advance of information about UE capabilities that need to be reported (e.g., parameters, parameter ranges) or information about UE capabilities that do not need to be reported (e.g., parameters, parameter ranges).

[0037] UE capability inquiry information (e.g., UECapabilityEnquiry) may be included in a predetermined message transmitted from the network to the UE. The predetermined message may be a DL-DCCH-Message. The UE capability inquiry information may include information (e.g., capabilityRequestFilter or UE-CapabilityRequestFilterNR) that the network requests the UE to filter UE capabilities. The information requesting UE capability filtering may include information (e.g., CodebookParameterFilter) about filtering codebook parameters corresponding to channel state information (CSI).

[0038] For example, in existing systems (for example, before Rel. 16), a UE is supported to report information related to CSI reporting as UE capability information.

[0039] (Band Combination) When a UE performs communication using a combination of multiple bands, it is assumed that parameters for each signal / channel are set for each band.

[0040] A UE that supports communication using a combination of bands may also support a case where certain parameters (e.g., a CSI processing unit (or a CSI control unit)) are shared between bands. For example, a UE that shares a CSI processing unit between bands may have the same CSI processing capability both within the band and between the bands. A combination of bands may also be called a Band Combination (BC).

[0041] Therefore, a UE that supports BC is expected to report the UE CSI codebook capability for each band combination in addition to the UE CSI codebook capability for each band. For example, a UE that supports BC is expected to report predetermined parameters for each band combination (BC).

[0042] On the other hand, in future NR, it is also possible that the UL MIMO coherence type will be reported for each band combination (BC) in association with a transmission switch (e.g., Tx switch).

[0043] In existing systems (e.g., Rel. 15), when performing UL MIMO, noncoherent (e.g., non-coherent), partial coherent (e.g., partial coherent), or full coherent (e.g., full coherent) is reported as a UE capability (e.g., pusch-TransCoherence). When CB-based MIMO is applied, the codebook that can be configured for the UE varies depending on the report from the UE. Furthermore, even for non-codebook-based MIMO, UE operation differs depending on the coherent type.

[0044] However, when reporting the coherent type per BC (e.g., per BC) in addition to reporting the coherent type per band (e.g., per band), or instead of reporting the coherent type per band, the problem arises as to how to control the reporting of the coherent type per BC.

[0045] The inventors noticed that coherent type reporting for each band combination could be introduced / supported, and studied coherent type reporting for each band / band combination, resulting in the idea of ​​one aspect of this embodiment.

[0046] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that each of the following aspects (for example, each case) may be used alone, or at least two of them may be combined and applied.

[0047] 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."

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0053] 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.

[0054] 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.

[0055] In the following description, the UL coherent type (for example, PUSCH coherent type) will be taken as an example of the coherent type that is the UE capability information, but applicable UE capabilities are not limited to this.

[0056] (Wireless communication method) First Embodiment In the first embodiment, an example of controlling reporting of the coherence type in consideration of the coherence type in a band combination (or each band included in the band combination) will be described.

[0057] In the present disclosure, reporting per band (e.g., per band) may indicate that reporting is performed per band, reporting per band combination (e.g., per band combination) may indicate that reporting is performed per band combination, and reporting per band in band combination (e.g., per band in band combination) may indicate that reporting is performed for each band in each band combination.

[0058] The coherence type report may be at least one of non-coherent, partially coherent, and fully coherent.

[0059] The UE may report the coherence type for each band, for each band combination, or for each band in a band combination (see FIG. 2A). Upon receiving the UE capability report (here, the coherence type) from the UE, the network / base station may configure higher layer parameters (e.g., PUSCH configuration) including information about the codebook type (or codebook subset) based on the reported UE capability.

[0060] For example, the UE may report at least one of the following first to third report values ​​(or a combination of any two or three). Also, the UE may report at least one of the following first to third report values ​​(or a combination of any two or three) in addition to the coherence type (pusch-TransCoherence) defined / supported in the existing system (e.g., Rel. 15) (see FIG. 2B). The reporting of the coherence type (pusch-TransCoherence) defined / supported in the existing system (e.g., Rel. 15) is performed for each band.

[0061] [First reported value] The first report value may be a coherence type report value (for example, pusch-TransCoherence_r16) that is reported per band.

[0062] The reported value of the coherence type reported per band may be, for example, noncoherent / partial coherent / full coherent ({nonCoherent, partialCoherent, fullCoherent}).

[0063] Alternatively, a reported value for each band assuming BC may be selected.

[0064] [Second reported value] The second report value may be a coherence type report value (for example, pusch-TransCoherenceInBC_r16) that is reported for each band combination (per BC).

[0065] The reported value of the coherence type reported for each band combination (per BC) may be noncoherent / partial coherent / full coherent ({nonCoherent, partialCoherent, fullCoherent}).

[0066] Furthermore, reporting may be controlled based on the total or maximum value of each coherence type for all bands included in a given BC when a given BC is assumed.

[0067] For example, the most common coherent type among the coherent types corresponding to each band included in the BC may be reported, or if at least one band included in the BC includes a specific coherent type (e.g., noncoherent), the specific coherent type may be reported.

[0068] The value of a certain BC being fully coherent may mean that the value is fully coherent in all bands included in the BC.

[0069] [Third reported value] The third report value may be a report value of a coherence type (eg, pusch-TransCoherencePerBandInBC_r16) that is reported for each band in a band combination (eg, per band in band combination).

[0070] The reported value of the coherence type reported for each band in BC (for example, per band in band combination) may be noncoherent / partial coherent / full coherent ({nonCoherent, partialCoherent, fullCoherent}).

[0071] Furthermore, a report value assuming a certain band in a predetermined BC may be reported. For example, the fact that a value of a certain band included in a certain BC is fully coherent may mean that the band is fully coherent when carrier aggregation is performed using a combination of bands included in the BC (or when a PUSCH is configured with a combination of bands included in the BC).

[0072] For example, the UE may report the first report value and the second report value (but not the third report value). Alternatively, the UE may report the second report value and the third report value (but not the first report value). Alternatively, the UE may report all of the first report value, the second report value, and the third report value. Alternatively, the UE may report the first report value and the third report value (but not the second report value).

[0073] The UE may configure a codebook type that satisfies a report value (e.g., at least one of the first to third report values) reported to the base station through a PUSCH configuration (e.g., PUSCH-config). The codebook type may be interpreted as a codebook subset (e.g., codebookSubset). At least one of full and partial and noncoherent / partial and noncoherent / noncoherent ({fully and partial and noncoherent, partial and noncoherent, noncoherent}) may be configured through the codebook subset.

[0074] For example, assume that a certain BC#1 corresponds to non-coherence and band#1 included in the BC#1 corresponds to full coherence. In this case, when matching to a lower reported value among multiple reported values, non-coherence may be used (e.g., a codebook type corresponding to non-coherence may be applied / set). Alternatively, when matching to a higher reported value among multiple reported values, full coherence may be used (e.g., a codebook type corresponding to full coherence may be applied / set). Alternatively, when taking the mean / average of multiple reported values, partial coherence may be used (e.g., a codebook type corresponding to partial coherence may be applied / set).

[0075] [Variations] The total number / maximum number of each coherence type may be reported as the second reported value (reported value of coherence types reported per BC). For example, non-coherent / partially coherent / full coherent may be quantified, and the maximum or total value of each coherence type corresponding to each of multiple bands (e.g., all bands) included in the BC may be reported.

[0076] For example, predetermined values ​​(or ranges of values) may be set for non-coherent / partially coherent / fully coherent. Noncoherent {0, 1, …, M1} Partially coherent {0, 1, …, M2} Fully coherent {0, 1, …, M3}

[0077] The values ​​of M1 to M3 may be defined in a specification, or may be set to the UE by the base station using higher layer signaling, etc. The values ​​of M1 to M3 may be set / defined in common, or may be set / defined separately.

[0078] For example, if the full coherence value of a certain BC is 3, it may mean that full coherence can be set in up to three bands that are included in the BC and that have reported full coherence per band.

[0079] Noncoherence can be considered a subfunction of the other two (e.g., partial coherence / full coherence), and partial coherence can be considered a subfunction of full coherence. Therefore, assume that noncoherence = 10, partial coherence = 5, and full coherence = 3 are reported for a certain BC. In this case, it may mean that full coherence can be configured for up to three bands included in the BC and reported as full coherence per band. Furthermore, it may mean that partial coherence can be configured for up to five bands included in the BC and reported as partial coherence or full coherence per band. Furthermore, it may mean that noncoherence can be configured for up to 10 bands included in the BC and reported as noncoherent, partial coherence, or full coherence per band.

[0080] When the total number of all coherent types (or the number of bands) is reported per band combination (per BC), an upper limit may be specified for the total number of any codebook type (or each codebook type) that can be set for all bands included in the BC.

[0081] Here, the total number is reported as the reported value, but this is not limiting, and the total number may be interpreted as the maximum number of each coherent type / all coherent types included in a certain BC.

[0082] <Second embodiment> In the second embodiment, a description will be given of UE capabilities (for example, UE cap.) in the case where at least one of the first to third report values ​​shown in the first embodiment is supported.

[0083] It is possible that the UE capability corresponding to at least one of the first to third report values ​​shown in the first embodiment cannot be read (or grasped) by a base station of an existing system (e.g., Rel. 15). If the UE is to be able to operate in a base station of an existing system based on the UE capability corresponding to at least one of the first to third report values, the UE needs to additionally report at least one of the first to third report values ​​in addition to the report value defined in the existing system (e.g., pusch-TransCoherence reported for each band).

[0084] The reported values ​​defined in the existing system (e.g., pusch-TransCoherence reported for each band) may be reported according to the existing specifications (values ​​assuming all supported BCs may be reported).

[0085] In the UE capabilities when at least one of the first to third report values ​​shown in the first embodiment is supported, the value reported per band (e.g., the first report value) may be a value reported per band when assuming / assuming a band combination reported per BC.

[0086] That is, the value reported per band (for example, the first reported value (pusch-TransCoherence_r16)) may be reported separately from the value (pusch-TransCoherence) reported per band in the existing system (see FIG. 1B). In such a case, the first reported value (pusch-TransCoherence_r16) and the value (pusch-TransCoherence) reported per band in the existing system may have different reported contents / values.

[0087] For example, a certain UE may be permitted / supported to report different coherence types for a certain band in the per-band report of the existing system (e.g., Rel. 15) and the per-band report (e.g., the first report value) shown in the first embodiment. For example, the per-band report value (pusch-TransCoherence) of the existing system (e.g., Rel. 15) may be non-coherent, and the first report value (pusch-TransCoherence_r16) may be full coherent.

[0088] Based on a report value from the UE (or a report of UE capabilities), the coherency type of the PUSCH may be set by a predetermined higher layer parameter (for example, a PUSCH configuration (for example, PUSCH-config)).

[0089] For example, in a certain band, a codebook subset including a coherence type reported using at least one of the per-band report value (pusch-TransCoherence) of an existing system and the first report value (pusch-TransCoherence_r16) may be configured in a UE by PUSCH configuration (e.g., in a BWP within the band).

[0090] In an existing system (e.g., Rel. 15), when the reported value (pusch-TransCoherence) for each band (per band) is noncoherent and the first reported value (pusch-TransCoherence_r16) is full coherent, either codebook subset may be configured. If only the pusch-TransCoherence value is reported, only noncoherence can be configured. However, reporting the first reported value (pusch-TransCoherence_r16) enables full coherence, enabling the use of a better MIMO precoder. As a result, UL characteristics can be improved.

[0091] In this way, by allowing / supporting differences in the content / values ​​contained in the first reported value (pusch-TransCoherence_r16) and the value reported for each band in existing systems (pusch-TransCoherence), it becomes possible to flexibly set the codebook type based on multiple reported contents.

[0092] Therefore, by reporting the value for each band assuming / assuming the band combination reported for each BC as the first reported value, it becomes possible to report a more appropriate coherence type than the value (pusch-TransCoherence) reported for each band in existing systems.

[0093] As an example, a UE that supports the UE capabilities described in the first embodiment may report the UE capabilities of the existing system for each band using conservative numbers (e.g., conservative numbers), report the new UE capabilities for each band using aggressive numbers (e.g., first / third report values), and further report the UE capabilities for each BC (e.g., second report value) that are used only in the case of inter-band CA. A base station of the existing system may read the UE capabilities of the existing system for each band using conservative numbers, and a new base station may ignore (not consider) the UE capabilities of the existing system for each band, read the new UE capabilities for each band using larger numbers (e.g., first / third report values), and read the new UE capabilities for each BC (e.g., second report value) in the case of inter-band CA.

[0094] In this way, the UE of the legacy system may only signal the UE capabilities of the legacy system per band using conservative values. The base station of the legacy system may read the UE capabilities of the legacy system per band using conservative values. The new base station may read the UE capabilities of the legacy system per band using conservative values.

[0095] <Third embodiment> In the third embodiment, control of whether to report UE capabilities (for example, UE cap.) when at least one of the first to third report values ​​shown in the first embodiment is supported will be described.

[0096] Whether to report UE capabilities (e.g., UE cap.) when at least one of the first to third report values ​​shown in the first embodiment is supported may be set based on a UE capability inquiry (e.g., UECapabilityEnquiry). The UE may determine whether to report (or whether reporting is requested) based on the UE capability inquiry (e.g., UECapabilityEnquiry).

[0097] For example, the UE may be controlled to report the UE capabilities (e.g., at least one of the first to third report values) shown in the first embodiment only when codebook type reporting is set (e.g., pusch-TransCoherencePerBandInBC={true}) by a UE capability inquiry / UE capability inquiry (e.g., UECapabilityEnquiry) (see Figure 3).

[0098] When reporting the UE capabilities shown in the first embodiment, it may be required to always report the report value (pusch-TransCoherence) for each band (per band) of the existing system.

[0099] Alternatively, when the UE capability report shown in the first embodiment is set (for example, pusch-TransCoherencePerBandInBC={true} is set) by a UE capability inquiry / UE capability inquiry (for example, UECapabilityEnquiry), the UE may report only the UE capability shown in the first embodiment, and may not be required to report the report value (pusch-TransCoherence) for each band (per band) of the existing system. In other words, in the first embodiment, the UE may be controlled to report the UE capability (for example, at least one of the first to third report values) shown in the first embodiment, instead of the report value (pusch-TransCoherence) for each band (per band) of the existing system.

[0100] In the existing system (e.g., Rel. 15), the base station does not set the report value (pusch-TransCoherence) for each band (per band) of the existing system that uses a UE capability inquiry (e.g., UECapabilityEnquiry) (e.g., does not set pusch-TransCoherence={true}). In other words, the UE is configured to report the report value (pusch-TransCoherence) for each band (per band) of the existing system regardless of the setting / notification from the base station.

[0101] When the UE capability report shown in the first embodiment is not set (for example, pusch-TransCoherencePerBandInBC={true} is set) by a UE capability inquiry / UE capability inquiry (for example, UECapabilityEnquiry), the UE may be controlled not to report (or not to request) the UE capability shown in the first embodiment. In this case, the UE may be controlled to report the report value (pusch-TransCoherence) per band (per band) of the existing system.

[0102] Alternatively, the UE may be controlled to report the per band (pusch-TransCoherence) report value of the existing system, regardless of whether the UE capability reporting shown in the first embodiment is configured by a UE capability inquiry / UE capability inquiry (e.g., UECapabilityEnquiry).

[0103] Alternatively, the base station may configure / notify the UE as to which of the first to third report values ​​the UE is to report. The UE may determine the report value to report (for example, at least one of the first to third report values) based on the information configured / notified by the base station.

[0104] (wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0105] 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 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).

[0106] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0107] 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.

[0108] 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))).

[0109] 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.

[0110] 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).

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0116] 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).

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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).

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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).

[0130] (base station) 5 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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 .

[0142] 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 .

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] The transceiver 120 may receive at least one of a first report value regarding the UL coherence type for each band, a second report value regarding the UL coherence type for each band combination, and a third report value regarding the UL coherence type for each band in the band combination.

[0148] The control unit 110 may control transmission of information relating to the codebook type that is set based on at least one of the first report value, the second report value, and the third report value.

[0149] (user terminal) 6 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] The transceiver 220 may transmit at least one of a first report value regarding the UL coherence type for each band, a second report value regarding the UL coherence type for each band combination, and a third report value regarding the UL coherence type for each band in the band combination. The transceiver 220 may receive information regarding a codebook type that is set based on at least one of the first report value, the second report value, and the third report value (or that is set / notified after reporting at least one of the first report value, the second report value, and the third report value).

[0167] The control unit 210 may perform control to report at least one of a first report value regarding the UL coherence type for each band, a second report value regarding the UL coherence type for each band combination, and a third report value regarding the UL coherence type for each band in the band combination.

[0168] The control unit 210 may perform control to report at least one of the first report value, the second report value, and the third report value, and another report value related to the UL coherence type for each band that is different from the first report value. The control unit 210 may perform control to report the sum of the numerical values ​​corresponding to the UL coherence type as the second report value related to the UL coherence type for each band combination. The control unit 210 may separately control whether to report (or whether reporting is requested for) at least one of the first report value, the second report value, and the third report value, and the other report value.

[0169] (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.

[0170] 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.

[0171] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0172] In this disclosure, terms such as apparatus, circuit, device, section, unit, etc. may be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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).

[0181] 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.

[0182] 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.

[0183] (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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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."

[0202] 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.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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).

[0210] 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).

[0211] 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).

[0212] 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.

[0213] 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.

[0214] 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).

[0215] 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.

[0216] 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.

[0217] 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.

[0218] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 8 is a diagram showing an example of a vehicle according to an embodiment. Vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0224] 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.

[0225] 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).

[0226] 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.

[0227] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0228] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0229] 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.

[0230] 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.

[0231] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10 or user terminal 20. Furthermore, the communication module 60 may be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (or may function as at least one of the base station 10 and user terminal 20).

[0232] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0233] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0234] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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).

[0240] 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."

[0241] 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.

[0242] 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.

[0243] 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.

[0244] 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.

[0245] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0246] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0247] 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."

[0248] 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.

[0249] 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."

[0250] 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.

[0251] 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.

[0252] 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 control unit that controls to report a report value regarding a UL coherence type for each band combination; a receiving unit that receives information about a codebook subset that is set based on the reported value; The control unit separately controls whether to report the report value and other report values ​​related to band combinations in a system different from the report value related to the UL coherence type for each band.

2. A step of controlling to report a report value regarding a UL coherence type for each band combination; receiving information regarding a codebook subset that is to be set based on the reported values; A wireless communication method for a terminal, comprising a step of separately controlling whether or not to report the report value and other report values ​​related to band combinations in a system different from the report value related to the UL coherence type for each band.

3. A receiving unit that receives a reported value regarding a UL coherence type for each band combination; a control unit that controls transmission of information about a codebook subset that is set based on the reported value; The control unit separately controls whether to report the report value and other report values ​​related to band combinations in a system different from the report value related to the UL coherence type for each band.

4. A system including a terminal and a base station, The terminal a control unit that controls to report a report value regarding a UL coherence type for each band combination; a receiving unit that receives information about a codebook subset that is set based on the reported value; The control unit separately controls whether to report the report value and other report values ​​regarding band combinations in a system different from the report value regarding the UL coherence type for each band, The base station A system comprising a receiver for receiving the reported value regarding the UL coherence type for each of the band combinations.

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