Terminal, wireless communication method, and base station

Abstract

A terminal according to an embodiment of the present disclosure comprises: a transmission unit that transmits a panel-specific capability reporting related to support of (3TX) uplink (UL) transmission that uses three antenna ports; and a control unit that, when PUSCH transmission is to be supported, performs control so as to measure a correspondence between a panel and a beam on the basis of a received reference signal (RS) and to include the correspondence in the beam reporting. The panel-specific capability reporting is a terminal capability value set including the maximum number of measurement reference signal (SRS) ports that are supported.

Description

Terminal, wireless communication method and base station

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

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

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

[0004] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010

[0005] Rel. 15 NR supports uplink (UL) multi-input multi-output (MIMO) transmission with up to four layers. For future NRs, support for UL transmission with a number of layers greater than four is being considered to achieve higher spectral efficiency. For example, for Rel. 18 NR, maximum 6-rank transmission using 6 antenna ports and maximum 6- or 8-rank transmission using 8 antenna ports are being considered.

[0006] On the other hand, there may be cases where uplink full power transmission is not supported in Rel. 19 and later. In such cases, to easily realize codebook-based transmission using three antenna ports (3-antenna-port codebook-based transmission), it is being considered to specify a noncoherent UL codebook (a noncoherent codebook for UL).

[0007] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmission using, for example, three antenna ports.

[0008] A terminal according to one aspect of the present disclosure has a transmitting unit that transmits a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX), and a control unit that, when supporting the PUSH transmission, controls to measure correspondence between the panel and the beam based on a received reference signal (RS) and include it in the beam report, wherein the panel-specific capability report is a terminal capability value set including the maximum number of supported measurement reference signal (SRS) ports.

[0009] According to one aspect of the present disclosure, UL transmission can be appropriately controlled.

[0010] Figure 1 is a diagram showing an example of a table of precoding matrices W for single-layer (rank-1) transmission using four antenna ports when the transform precoder is disabled in Rel. 16 NR. Figure 2 is a diagram showing an example of a table of precoding matrices W for two-layer (rank-2) transmission using four antenna ports when the transform precoder is disabled in Rel. 16 NR. Figure 3 is a diagram showing an example of a table of precoding matrices W for three-layer (rank-3) transmission using four antenna ports when the transform precoder is disabled in Rel. 16 NR. Figure 4 is a diagram showing an example of a table of precoding matrices W for four-layer (rank-4) transmission using four antenna ports when the transform precoder is disabled in Rel. 16 NR. Figure 5A is a diagram showing an example of a table of precoding matrices W for single-layer (rank-1) transmission using two antenna ports in Rel. 16 NR. Figure 5B is a diagram showing an example of a table of precoding matrices W for two-layer (rank-1) transmission using two antenna ports in Rel. 16 NR.

[0033] Figure 6 is a diagram showing an example of a table of precoding matrices W for two-layer (rank 2) transmission using two antenna ports when transform precoding is disabled in Rel. 16 NR. Figure 6 is a diagram showing an example of the correspondence between field values ​​for precoding information and number of layers and the number of layers and TPMI in Rel. 16 NR. Figures 7A-7C are diagrams showing SRI indications or second SRI indications when transmitting codebook-based PUSCH in Rel. 17. Figure 8 is a diagram showing an example of an antenna layout for eight antenna ports. Figure 9 is a diagram showing candidates for precoding matrices W for each transmission rank using three antenna ports. Figures 10A to 10C are diagrams showing an example of tables (separate tables) of precoding matrices W for one- to three-layer (rank 1 to 3) transmission using three antenna ports when the transform precoder is disabled. Figure 11 is a diagram showing an example of a table (joint table) of precoding matrices W for one- to three-layer (rank 1 to 3) transmission using three antenna ports when the transform precoder is disabled.12A and 12B are diagrams illustrating an example of a correspondence relationship between field values ​​of precoding information and the number of layers, the number of layers, and TPMI. FIG. 13 is a diagram illustrating an example of a correspondence relationship between field values ​​of precoding information and the number of layers, the number of layers, and TPMI. FIGS. 14A to 14C are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 1-1. FIGS. 15A to 15C are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 1-2. FIGS. 16A to 16C are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 1-3. FIGS. 17A to 17C are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 1-4. FIGS. 18A to 18C are diagrams illustrating an example of a table related to precoding information and the number of layers for 3TX according to aspect 2-1. 19A to 19C are diagrams illustrating an example of a table related to precoding information and the number of layers for 3TX according to aspect 2-2. FIGS. 20A and 20B are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 2-3. FIGS. 21A and 21B are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 2-4. FIG. 22 is a diagram illustrating an example of parameters related to reporting of UE capability values ​​according to the third embodiment. FIG. 23 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 24 is a diagram illustrating an example of a configuration of a base station according to an embodiment. FIG. 25 is a diagram illustrating an example of a configuration of a user terminal according to an embodiment. FIG. 26 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to an embodiment. FIG. 27 is a diagram illustrating an example of a vehicle according to an embodiment.

[0011] (Control of Transmission of SRS and PUSCH) In Rel. 15 NR, a terminal (user terminal, User Equipment (UE)) may receive information (SRS configuration information, for example, parameters in the RRC control element "SRS-Config") used for transmitting a measurement reference signal (for example, a sounding reference signal (SRS)).

[0012] Specifically, the UE may receive at least one of information regarding one or more SRS resource sets (SRS resource set information, e.g., the RRC control element "SRS-ResourceSet") and information regarding one or more SRS resources (SRS resource information, e.g., the RRC control element "SRS-Resource").

[0013] An SRS resource set may be associated with (or group together) a predetermined number of SRS resources, each of which may be identified by an SRS Resource Indicator (SRI) or SRS Resource Identifier (ID).

[0014] The SRS resource set information may include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and information on SRS usage.

[0015] Here, the SRS resource type may indicate any one of periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic CSI (Aperiodic SRS (A-SRS)). Note that the UE may transmit P-SRS and SP-SRS periodically (or periodically after activation), and transmit A-SRS based on an SRS request in the DCI.

[0016] Furthermore, the use ("usage" of the RRC parameter, "SRS-SetUse" of the L1 (Layer-1) parameter) may be, for example, beam management, codebook (CB), non-codebook (NCB), antenna switching, etc. The SRS for codebook or non-codebook use may be used to determine a precoder for codebook-based or non-codebook-based uplink shared channel (Physical Uplink Shared Channel (PUSCH)) transmission based on the SRI.

[0017] For example, in the case of codebook-based transmission, the UE may determine a precoder (precoding matrix) for PUSCH transmission based on the SRI, a Transmitted Rank Indicator (TRI), and a Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI.

[0018] The SRS resource information may include an SRS resource ID (SRS-ResourceId), the number of SRS ports, the SRS port number, a transmission comb, an SRS resource mapping (e.g., time and / or frequency resource position, resource offset, resource period, number of repetitions, number of SRS symbols, SRS bandwidth, etc.), hopping-related information, an SRS resource type, a sequence ID, spatial relationship information of the SRS, etc.

[0019] The spatial relationship information of the SRS (e.g., the RRC information element "spatialRelationInfo") may indicate spatial relationship information between a predetermined reference signal and the SRS. The predetermined reference signal may be at least one of a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, a Channel State Information Reference Signal (CSI-RS), and an SRS (e.g., another SRS). The SS / PBCH block may be referred to as a Synchronization Signal Block (SSB).

[0020] The spatial relationship information of the SRS may include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the predetermined reference signal.

[0021] In the present disclosure, the SSB index, SSB resource ID, and SSB Resource Indicator (SSBRI) may be interchangeable. Furthermore, the CSI-RS index, CSI-RS resource ID, and CSI-RS Resource Indicator (CRI) may be interchangeable. Furthermore, the SRS index, SRS resource ID, and SRI may be interchangeable.

[0022] The spatial relationship information of the SRS may include a serving cell index, a BWP index (BWP ID), etc. corresponding to the predetermined reference signal.

[0023] When the UE is configured with spatial relationship information regarding the SRS and an SSB or CSI-RS for a certain SRS resource, the UE may transmit the SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter for receiving the SSB or CSI-RS (spatial domain receive filter). In this case, the UE may assume that the UE receive beam for the SSB or CSI-RS and the UE transmit beam for the SRS are the same.

[0024] When the UE is configured with spatial relationship information between another SRS (reference SRS) and the target SRS for a certain SRS (target SRS), the UE may transmit the target SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain transmit filter) for transmitting the reference SRS. That is, in this case, the UE may assume that the UE transmit beam of the reference SRS and the UE transmit beam of the target SRS are the same.

[0025] The UE may determine the spatial relationship of the PUSCH scheduled by the DCI (e.g., DCI format 0_1) based on the value of a predetermined field (e.g., an SRS resource identifier (SRI) field) in the DCI. Specifically, the UE may use spatial relationship information of the SRS resources (e.g., the RRC information element "spatialRelationInfo") determined based on the value of the predetermined field (e.g., the SRI) for PUSCH transmission.

[0026] In Rel. 15 / 16 NR, when codebook-based transmission is used for PUSCH, the UE is configured by RRC with an SRS resource set of a codebook usage having up to two SRS resources, and one of the up to two SRS resources may be indicated by DCI (a 1-bit SRI field). The transmission beam for PUSCH is specified by the SRI field.

[0027] The UE may determine the TPMI and the number of layers (transmission rank) for the PUSCH based on the precoding information and number of layers field (hereinafter also referred to as the precoding information field). The UE may select a precoder from an uplink codebook for the same number of SRS ports as the number of SRS ports indicated by the upper layer parameter "nrofSRS-Ports" configured for the SRS resource specified by the SRI field based on the TPMI, the number of layers, etc.

[0028] In Rel. 15 / 16 NR, when non-codebook-based transmission is used for PUSCH, a non-codebook-used SRS resource set having up to four SRS resources may be configured for the UE by RRC, and one or more of the up to four SRS resources may be indicated by DCI (a 2-bit SRI field).

[0029] The UE may determine the number of layers (transmission rank) for the PUSCH based on the SRI field. For example, the UE may determine that the number of SRS resources specified by the SRI field is the same as the number of layers for the PUSCH. The UE may also calculate a precoder for the SRS resources.

[0030] If a CSI-RS (which may be referred to as an associated CSI-RS) associated with the SRS resource (or an SRS resource set to which the SRS resource belongs) is configured by a higher layer, the transmission beam for the PUSCH may be calculated based on (measurements of) the configured associated CSI-RS. Otherwise, the transmission beam for the PUSCH may be specified by the SRI.

[0031] The UE may be configured to use codebook-based PUSCH transmission or non-codebook-based PUSCH transmission by a higher layer parameter "txConfig" indicating a transmission scheme. The parameter may indicate a value of "codebook" or "non-codebook."

[0032] In the present disclosure, a codebook-based PUSCH (codebook-based PUSCH transmission, codebook-based transmission) may refer to a PUSCH when a UE is configured with "codebook" as a transmission scheme. In the present disclosure, a non-codebook-based PUSCH (non-codebook-based PUSCH transmission, non-codebook-based transmission) may refer to a PUSCH when a UE is configured with "non-codebook" as a transmission scheme.

[0033] (Determining a PUSCH Precoder in Codebook (CB)-Based Transmission) As described above, in the case of codebook (CB)-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI, TRI, TPMI, and the like.

[0034] The SRI, TRI, TPMI, etc. may be notified to the UE using Downlink Control Information (DCI). The SRI may be specified by an SRS Resource Indicator field (SRI field) of the DCI, or may be specified by a parameter "srs-ResourceIndicator" included in an RRC information element "ConfiguredGrantConfig" of a configured grant PUSCH.

[0035] The TRI and TPMI may be specified by a "Precoding information and number of layers" field of the DCI, which for simplicity is also referred to as the Precoding information field.

[0036] The UE may report UE capability information related to a precoder type, and the base station may configure the precoder type based on the UE capability information through higher layer signaling. The UE capability information may be information on the precoder type used by the UE in PUSCH transmission (for example, may be represented by the RRC parameter "pusch-TransCoherence").

[0037] The UE may determine the precoder to be used for PUSCH transmission based on precoder type information (e.g., the RRC parameter "codebookSubset") included in PUSCH configuration information notified by higher layer signaling (e.g., the "PUSCH-Config" information element of RRC signaling). The UE may be configured with a subset of the PMI specified by the TPMI by the codebookSubset.

[0038] The precoder type may be specified by any one of full coherent, partial coherent, and 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").

[0039] For example, the RRC parameter "pusch-TransCoherence" indicating UE capability may indicate full coherence, partial coherence, or noncoherence, and the RRC parameter "codebookSubset" may indicate "fully and partial and noncoherence," "partial and noncoherence," or "noncoherent."

[0040] Fully coherent may mean that all antenna ports used for transmission are synchronized (may be expressed as being able to match the phase, being able to control the phase for each coherent antenna port, being able to apply a precoder appropriately for each coherent antenna port, 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. Non-coherent may mean that each antenna port used for transmission cannot be synchronized.

[0041] Note that a UE that supports a fully coherent precoder type may be assumed to support partially coherent and non-coherent precoder types, and a UE that supports a partially coherent precoder type may be assumed to support a non-coherent precoder type.

[0042] In the present disclosure, precoder type, coherency, PUSCH transmission coherence, coherent type, coherence type, codebook type, codebook subset, codebook subset type, etc. may be read interchangeably.

[0043] 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 a DCI (e.g., DCI format 0_1, etc.) that schedules an UL transmission.

[0044] Figure 1 shows an example of the association between codebook subsets and TPMI indices. Figure 1 corresponds to a table of precoding matrices W for single-layer (rank-1) transmission using four antenna ports when transform precoding (also called a transform precoder) is disabled in Rel. 16 NR. Figure 1 shows the corresponding Ws in ascending order of TPMI indices from left to right (similar to Figure 2).

[0045] The correspondence relationship (which may be called a table) showing the TPMI index and the corresponding W as shown in Fig. 1 is also called a codebook. A part of this codebook is also called a codebook subset.

[0046] In Fig. 1, if the codebook subset is fully, partially, and non-coherent, the UE is notified of a TPMI (TPMI index) of 0 to 27 for single-layer transmission. If the codebook subset is partial and non-coherent, the UE is configured with a TPMI of 0 to 11 for single-layer transmission. If the codebook subset is non-coherent, the UE is configured with a TPMI of 0 to 3 for single-layer transmission.

[0047] In Fig. 1, when a TPMI of 0 to 3 is notified, a non-coherent precoder is applied. When a TPMI of 4 to 11 is notified, a partially coherent precoder is applied. When a TPMI of 12 to 27 is notified, a fully coherent precoder is applied.

[0048] 2 to 4 correspond to tables of precoding matrices W for 2-4 layer (rank 2-4) transmission using 4 antenna ports in Rel. 16 NR when transform precoding is disabled.

[0049] According to Figure 2, the TPMI that the UE is informed of for two-layer transmission is from 0 to 21 (codebook subset full, partial and non-coherent), from 0 to 13 (codebook subset partial and non-coherent) or from 0 to 5 (codebook subset non-coherent).

[0050] According to Figure 3, the TPMI that the UE is informed of for layer 3 transmission is 0 to 6 (codebook subset full, partial and non-coherent), 0 to 2 (codebook subset partial and non-coherent) or 0 (codebook subset non-coherent).

[0051] According to Figure 4, the TPMI that the UE is informed of for four-layer transmission is between 0 and 4 (codebook subset is full, partial and non-coherent), between 0 and 2 (codebook subset is partial and non-coherent) or 0 (codebook subset is non-coherent).

[0052] Figure 5A corresponds to a table of precoding matrices W for single-layer (rank-1) transmission using two antenna ports in Rel. 16 NR. Figure 5B corresponds to a table of precoding matrices W for two-layer (rank-2) transmission using two antenna ports in Rel. 16 NR when transform precoding is disabled.

[0053] According to Figure 5A, the TPMI signaled to the UE for two-port single layer transmission is between 0 and 5 (codebook subsets are full, partial, and non-coherent) or between 0 and 1 (codebook subset is non-coherent). If the signaled TPMI is between 0 and 1, a non-coherent precoder is applied. If the signaled TPMI is between 2 and 5, a fully coherent precoder is applied.

[0054] According to FIG. 5B, the TPMI that the UE is informed of for two-port two-layer transmission is between 0 and 2 (codebook subset complete, partial and non-coherent) or 0 (codebook subset non-coherent).

[0055] Note that a precoding matrix in which only one element per column is non-zero may be called a non-coherent codebook. A precoding matrix in which a certain number of elements per column (greater than one, but not all elements in the column) are non-zero may be called a partially coherent codebook. A precoding matrix in which all elements per column are non-zero may be called a fully coherent codebook.

[0056] The non-coherent codebook and the partially coherent codebook may be referred to as an antenna selection precoder, an antenna port selection precoder, etc. For example, the non-coherent codebook (non-coherent precoder) may be referred to as a 1-port selection precoder, a 1-port port selection precoder, etc. Furthermore, the partially coherent codebook (partially coherent precoder) may be referred to as an x-port (x is an integer greater than 1) selection precoder, an x-port port selection precoder, etc. The fully coherent codebook may be referred to as a non-antenna selection precoder, a full-port precoder, etc. In the present disclosure, the terms codebook, codebook subset, and precoder may be interchangeable.

[0057] 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 DCI for 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, a codebook with TPMI=4 to 11).

[0058] In the present disclosure, a fully 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 fully coherent codebook subset (e.g., RRC parameter “codebookSubset”=“fullyAndPartialAndNonCoherent”), excluding a codebook corresponding to a TPMI specified by DCI for 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, a codebook with TPMI=12 to 27).

[0059] As can be seen from Figures 5A and 5B, there is no partially coherent precoder for two-antenna port transmission, so the setting in which the codebook subset is partial and non-coherent does not need to be applied to two-antenna ports.

[0060] (Precoding Information Field) As described above, the UE may determine the TPMI and the number of layers (transmission rank) for a PUSCH based on the precoding information field of the DCI (e.g., DCI format 0_1 / 0_2) that schedules the PUSCH.

[0061] For a codebook-based PUSCH, the number of bits of the precoding information field may be determined (or may vary) based on the setting of whether to enable or disable the transform precoder for the PUSCH (e.g., the upper layer parameter transformPrecoder), the setting of the codebook subset for the PUSCH (e.g., the upper layer parameter codebookSubset), the setting of the maximum number of layers for the PUSCH (e.g., the upper layer parameter maxRank), the setting of uplink full power transmission for the PUSCH (e.g., the upper layer parameter ul-FullPowerTransmission), the number of antenna ports for the PUSCH, etc.

[0062] 6 is a diagram showing an example of the correspondence between the field values ​​of the precoding information and the number of layers and the number of layers and the TPMI in Rel. 16 NR. The correspondence in this example is for four antenna ports when the transform precoder is disabled, the maximum rank (maxRank) is set to 2, 3, or 4, and uplink full power transmission is not set, is set to full power mode 2 (fullpowerMode2), or is set to full power, but is not limited to this. It should be understood by those skilled in the art that the "bit field mapped to the index" shown in the figure indicates the field values ​​of the precoding information and the number of layers.

[0063] In FIG. 6, the precoding information field is 6 bits when a fully coherent (fullyAndPartialAndNonCoherent) codebook subset is configured in the UE, 5 bits when a partially coherent (partialAndNonCoherent) codebook subset is configured, and 4 bits when a noncoherent (nonCoherent) codebook subset is configured.

[0064] As shown in Figure 6, the number of layers and TPMI corresponding to a certain precoding information field value may be the same (common) regardless of the codebook subset configured in the UE. For example, in Figure 6, the number of layers and TPMI indicated by values ​​= 0-11 in the precoding information field may be the same for fully coherent (fullyAndPartialAndNonCoherent), partially coherent (partialAndNonCoherent), and noncoherent codebook subsets. Also, in Figure 6, the number of layers and TPMI indicated by values ​​= 0-31 in the precoding information field may be the same for fully coherent (fullyAndPartialAndNonCoherent) and partially coherent (partialAndNonCoherent) codebook subsets.

[0065] The precoding information field may be 0 bits for a non-codebook-based PUSCH, and may be 0 bits for a codebook-based PUSCH of one antenna port.

[0066] (SRS configuration for codebook-based PUSCH) Fig. 7A shows the SRS configuration in Rel. 17 when ul-FullPowerTransmission is not set, or ul-FullPowerTransmission = fullpowerMode1, or ul-FullPowerTransmission = fullpowerMode2, or ul-FullPowerTransmission = fullpower and N SRS 7B is a diagram showing an SRI indication or a second SRI indication when transmitting a codebook-based PUSCH when ul-FullPowerTransmission=fullpowerMode2 and N SRS 7C is a diagram showing an SRI indication or a second SRI indication for codebook-based PUSCH transmission when ul-FullPowerTransmission=fullpowerMode2 and N SRS 10 shows an SRI indication or a second SRI indication for codebook-based PUSCH transmission when .SIGMA.=4.

[0067] The SRI indication corresponds to the SRS resource indicator field of the DCI, and the second SRI indication corresponds to the Second SRS resource indicator field of the DCI. The SRS resource set indicator field is 2 bits when txConfig=nonCodeBook and there are two SRS resource sets configured by srs-ResourceSetToAddModList associated with the "nonCodeBook" usage, or when txConfig=codebook and there are two SRS resource sets configured by srs-ResourceSetToAddModList associated with the "codebook" usage. Otherwise, the SRS resource set indicator field is 0 bit.

[0068] When the upper layer parameter txConfig=codebook, the SRS resource indicator field is [log2(N SRS )] bits. SRS is the number of configured SRS resources in the SRS resource set indicated by the SRS resource set indicator field (if present); otherwise, N SRS is the number of configured SRS resources associated with the usage of the upper parameter of value 'codeBook' within the SRS resource set configured by the upper layer parameter srs-ResourceSetToAddModList.

[0069] In codebook-based transmission, the PUSCH is scheduled by DCI format 0_0, DCI format 0_1, DCI format 0_2, or is semi-statically configured. Only one or two SRS resource sets can be configured in SRS-ResourceSetToAddModList with the higher layer parameter use "codebook" of SRS-ResourceSet. Also, only one or two SRS resource sets can be configured in srs-ResourceSetToAddModListDCI-0-2 with the higher layer parameter use "codebook" of SRS-ResourceSet.

[0070] In srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, when the usage of the upper layer parameters of SRS-ResourceSet is set to "codebook" and two SRS resource sets are configured, one or two SRIs and one or two TPMIs are given by two SRS resource indication fields and two precoding information fields, respectively.

[0071] The UE applies the indicated SRI(s) and TPMI(s) to one or more PUSCH repetitions according to the associated SRS resource sets of the PUSCH repetitions. If two SRS resource sets are configured in SRS-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2 and the usage of the higher layer parameters of SRS-ResourceSet is set to "codebook", the UE does not expect different numbers of SRS resources to be configured in the two SRS resource sets.

[0072] For codebook-based transmission, only one SRS resource from the SRS resource set may be indicated based on the SRI. The maximum number of configured SRS resources for codebook-based transmission is two, except when the upper layer parameter "ul-FullPowerTransmission" is set to "fullpowerMode2". If aperiodic SRS is configured for the UE, the SRS request field in the DCI triggers the transmission of the aperiodic SRS resource.

[0073] Except when the higher layer parameter "ul-FullPowerTransmission" is set to "fullpowerMode2", if multiple SRS resources are configured to "codebook" by an SRS-ResourceSet, the UE expects the higher layer parameter "nrofSRS-Port" of the SRS-Resource in the SRS-ResourceSet to be set to the same value for all these SRS resources.

[0074] When the upper layer parameter "ul-FullPowerTransmission" is set to "fullpowerMode2", the following (1) to (3) apply: (1) A UE can configure one SRS resource or multiple SRS resources with the same or different number of SRS ports in an SRS resource set whose purpose is set to "codebook". (2) If multiple SRS resources are configured in an SRS resource set, up to two different spatial relationships can be configured for all SRS resources in an SRS resource set whose purpose is set to "codebook". (3) Depending on the UE capability, up to two or four SRS resources are supported in an SRS resource set whose purpose is set to "codebook".

[0075] In the case of a normal codebook-based PUSCH, one SRS resource set having two SRS resources with the same number of ports can be configured. In the case of codebook-based PUSCH repetition (for multiple Transmission / Reception Points (TRPs)), two SRS resource sets each having the same number of SRS resources can be configured. In the case of "fullpowerMode2" in the codebook base, one SRS resource set, SRS resources with the same number of ports or different numbers of ports can be configured.

[0076] (Transmission of More Than Four Antenna Ports) Rel. 15 / 16 NR supports uplink (UL) multi-input multi-output (MIMO) transmission with up to four layers. For future wireless communication systems, support for UL transmission with more than four layers is being considered to achieve higher spectral efficiency. For example, for Rel. 18 NR, maximum six-rank transmission using six antenna ports and maximum six- or eight-rank transmission using eight antenna ports are being considered.

[0077] 8 is a diagram showing an example of an antenna layout with eight antenna ports. Ng is the number of antenna groups. M is the number of antennas (or antenna elements) in the first dimension, and N is the number of antennas (or antenna elements) in the second dimension. The first and second dimensions are, for example, horizontal and vertical directions. P is the number of polarization planes. When P=2, it becomes a cross-polarized antenna.

[0078] An antenna group may be referred to as a coherent group. A coherent group may include one or more coherent ports. For example, a partially coherent UE may have multiple coherent groups. Antenna ports within a coherent group may be coherent. Antenna ports between different coherent groups may not be coherent.

[0079] Each coherent group may correspond to a different transmit panel / transmit chain / SRS resource set / RS resource set / spatial relation information / joint Transmission Configuration Indication state (joint TCI state) / UL TCI state / received TRP. Here, the SRS resource set may specifically correspond to an SRS resource set used for codebook or non-codebook. Also, each coherent group may correspond to a different received TRP. Also, the coherent group may be referred to as a coherent antenna group, a port group, an antenna set, etc.

[0080] The UE may report supported antenna groups / antenna configuration information / coherent number as UE capability information. Also, the UE may be configured with coherent groups (e.g., the number of coherent groups and the number of ports included in each coherent group) by higher layer signaling.

[0081] It should be noted that the antenna layout is not limited to the example shown in Figure 8. For example, the number of panels on which antennas are arranged, the orientation of the panels, the coherency of each panel / antenna (fully coherent, partially coherent, non-coherent, etc.), the antenna arrangement in a specific direction (horizontal, vertical, etc.), and the polarization antenna configuration (single polarization, cross polarization, number of polarization planes, etc.) may be different from the examples in Figures 7A and 7B. dG-H and dG-V represent the horizontal and vertical spacings between the centers of adjacent antenna groups, respectively.

[0082] In addition, while Rel. 15 / 16 NR supported the transmission of one codeword (CW) in one PUSCH, for Rel. 18 NR, the UE is considering transmitting more than one CW in one PUSCH. For example, support for two CW transmissions for ranks 5-8 and two CW transmissions for ranks 2-8 is being considered.

[0083] In addition, while Rel. 15 and Rel. 16 UEs are expected to use only one beam / panel for UL transmission at a given time, in Rel. 17 and later, simultaneous UL transmission (e.g., PUSCH transmission) of multiple beams / panels for one or more TRPs is being considered to improve UL throughput and reliability. Note that simultaneous PUSCH transmission of multiple beams / panels may correspond to PUSCH transmission with more than four layers or PUSCH transmission with four or fewer layers.

[0084] Also, precoding matrices for UL transmission using more than four antenna ports (a number of antenna ports greater than four) are being considered, for example, a codebook for 8-port transmission (which may be called an 8 TX UL codebook, etc.).

[0085] (Codebook-Based Transmission Using Three Antenna Ports) Incidentally, in Rel. 19 and later, there may be cases where the above-mentioned uplink (UL) full power transmission is not supported and SRS enhancement / extension is not performed. In such cases, to easily realize codebook-based transmission using three antenna ports, it is being considered to specify a noncoherent UL codebook (a noncoherent codebook for UL).

[0086] <Codebook for 3TX UE> A codebook for a UE supporting layer 1-3 transmission using three antenna ports may be referred to as a non-coherent UL codebook with three antenna ports.

[0087] 9 is a diagram showing candidates for precoding matrix W for each transmission rank using three antenna ports. FIGS. 10A to 10C are diagrams showing an example of a table (separate table) of precoding matrix W for transmission of layers 1 to 3 (ranks 1 to 3) using three antenna ports when the transform precoder is disabled. FIG. 11 is a diagram showing an example of a table (joint table) of precoding matrix W for transmission of layers 1 to 3 (ranks 1 to 3) using three antenna ports when the transform precoder is disabled. In FIGS. 10 and 11, the TPMI index of the W column increases from left to right (e.g., 0 to 2). The same applies below.

[0088] The non-coherent UL codebook for 3TX UE may be defined as shown in FIGS.

[0089] The precoding matrix W for rank 1 (single layer), rank 2 (two layers), and rank 3 (three layers) may be defined by separate tables (separate tables shown in Figures 10A to 10C) or one (single) table (joint table shown in Figure 11).

[0090] As shown in Figure 9, the precoding matrix W for rank 1 (single layer) may include three precoders. As shown in Figures 9 and 10A, in a separate table, the three precoders may correspond to TPMI indices 0 to 2. As shown in Figures 9 and 11, in a single table, the three precoders may correspond to TPMI indices 0 to 2.

[0091] As shown in Figure 9, the precoding matrix W for rank 2 may include three precoders. As shown in Figures 9 and 10B, in a separate table, the three precoders may correspond to TPMI indices 0 to 2. As shown in Figures 9 and 11, in a single table, the three precoders may correspond to TPMI indices 3 to 5.

[0092] As shown in Figure 9, the precoding matrix W for rank 3 may include one precoder. As shown in Figures 9 and 10C, in a separate table, one precoder may correspond to TPMI index 0. As shown in Figures 9 and 11, in a single table, one precoder may correspond to TPMI index 6.

[0093] Also, the maximum rank number (1 to 3) supported by the UE (3TX UE) may be reported in the UE capabilities.

[0094] <Bit Field for Codebook for 3TX UE> Figures 12A and 12B are diagrams showing an example of the correspondence between the field values ​​of the precoding information and the number of layers, and the number of layers and TPMI. Figure 12A corresponds to the separate table described in Figure 10, and Figure 12B corresponds to the single table described in Figure 11.

[0095] The UE may be configured / instructed to use a codebook (codebook subset) for 3TX UEs. For example, the UE may determine the precoder (TPMI and number of layers) to be applied based on the bit fields shown in Figure 12. The bit fields shown in Figure 12 may be included in DCI (e.g., DCI format 0_1 / 0_2) that schedules PUSCH.

[0096] As shown in Figure 12A, when the codebook subset is non-coherent and the maximum rank number (transmission rank) is 1, bit field indexes (bit fields mapped to indexes) 0 to 2 correspond to (indicate) TPMI = 0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0097] Also, if the codebook subsets are non-coherent and the maximum rank is 2, bit field indices 0 to 2 correspond to (indicate) TPMI=0 to 2, respectively, in layer 1, and bit field indices 3 to 5 correspond to TPMI=0 to 2, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0098] Also, if the codebook subsets are non-coherent and the maximum rank is 3, bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2, respectively, in layer 1, bit field indexes 3 to 5 correspond to TPMI=0 to 2, respectively, in layer 2, and bit field index 6 corresponds to TPMI=0 in layer 3. Bit field index 7 may be a reserved bit.

[0099] As shown in Figure 12B, when the codebook subset is non-coherent and the maximum rank number (transmission rank) is 1, bit field indexes (bit fields mapped to indexes) 0 to 2 correspond to (indicate) TPMI = 0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0100] Also, if the codebook subsets are non-coherent and the maximum rank is 2, bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1, and bit field indices 3 to 5 correspond to TPMIs 3 to 5, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0101] Also, if the codebook subsets are non-coherent and the maximum rank is 3, bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2, respectively, in layer 1, bit field indexes 3 to 5 correspond to TPMI=3 to 5, respectively, in layer 2, and bit field index 6 corresponds to TPMI=6 in layer 3. Bit field index 7 may be a reserved bit.

[0102] As shown in FIG. 12, when the maximum rank number is 1, the number of bits required to indicate the TPMI is 2, and when the maximum rank number is 2 or 3, the number of bits required to indicate the TPMI is 3.

[0103] Based on the precoding information field of the DCI (e.g., DCI format 0_1 / 0_2) that schedules the PUSH, the UE can appropriately determine / apply the TPMI and number of layers (transmission rank) for the PUSH, i.e., the precoder for each transmission rank using three antenna ports.

[0104] <Activating a Codebook for 3TX UE> FIG. 13 is a diagram showing an example of the correspondence between the field values ​​of the precoding information and the number of layers, and the number of layers and TPMI.

[0105] Although the above example illustrates the case where the transform precoder is disabled, it is not limited to this example. Depending on the UE capability, the transform precoder may be enabled / configured for a 3TX UE (e.g., max rank=1).

[0106] As shown in Figure 13, when the codebook subset is non-coherent and the transform precoder is enabled, bit field indexes 0 to 2 correspond to (indicate) TPMI = 0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0107] As shown in FIG. 13 , a dedicated correspondence relationship (table) may be defined depending on the case where the transform precoder is valid, but the correspondence relationship for the maximum rank number=1 shown in FIG. 12 may also be referenced (reused).

[0108] As described above, according to FIG. 13 (or FIG. 12), when the maximum rank number is 1 and the transform precoder is enabled, the number of bits required to indicate the TPMI is 2 bits.

[0109] In addition, the UE (3TX UE) can report whether it supports a transform precoder for codebook-based PUSCH with rank=1 through UE capability signaling.

[0110] (Analysis) In Rel. 17 multi-TRP PUSCH repeated transmission, two TPMI fields are indicated. Here, the codepoint of the second TPMI field (which may be called the second precoding information in the specification) is mapped (associated / associated) only to the TPMI index of the same rank indicated in the first TPMI field. This saves overhead.

[0111] The same scheme as above also applies to Simultaneous Multi-Panel Transmission (STxMP) Single Frequency Network (SFN) PUSCH in Rel. 18.

[0112] In transmission using three antenna ports (3TX), if the above-mentioned multi-TRP PUSCH repeat transmission in Rel. 17 / STxMP SFN PUSCH in Rel. 18 is supported, a new TPMI table needs to be defined for the second TPMI field (Analysis 1).

[0113] Also, in Rel. 17, a UE can report up to four UE capability values ​​for the maximum number of supported SRS ports. The capability indexes can be reported using L1-RSRP / SINR reporting. Each CRI / SSBRI / RSRP / SINR value is associated with a capability index. This makes it possible to support UE capability reporting for multiple UE panels with different port numbers. This functionality may also be extended to 3TX (Analysis 2).

[0114] As described above, various regulations for realizing 3TX are not yet sufficiently clear. If these are not clarified, there is a risk that UL transmission using three antenna ports cannot be appropriately controlled.

[0115] Therefore, the present inventors have focused on the existence of such cases and conceived the wireless communication method according to the present disclosure.

[0116] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0117] (Various Reinterpretations) In the present disclosure, a word enclosed in "( )" in a sentence may indicate an explanation of the word immediately preceding it (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc. Furthermore, in the present disclosure, a word enclosed in "[ ]" in a sentence may be interpreted including the word in the meaning of the entire sentence, or may be interpreted excluding (ignoring) the word in the meaning of the entire sentence. Note that "( )" and "[ ]" may also be used for purposes / meanings other than those mentioned above.

[0118] 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."

[0119] In the present disclosure, terms such as notify, activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0120] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0121] 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, etc., or a combination thereof.

[0122] 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.

[0123] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0124] In the present disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In the present disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0125] In the present 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.

[0126] In the present disclosure, TPMI and TPMI index may be interchangeable. Port and antenna port may be interchangeable. 8TX (8 transmissions) may mean 8 ports and 8 antenna ports. Port / antenna port may mean a port / antenna port for UL (e.g., SRS / PUSCH) transmission. In the present disclosure, SRS resource set and resource set may be interchangeable. Coherent group and SRS resource set may be interchangeable.

[0127] Although this disclosure mainly describes 8TX, the same applies to 5TX, 6TX, 7TX, 8 or more TX, 4 or less TX, etc. In the following embodiments, "8" may be read as "n (n is any integer)," and in this case, those skilled in the art will be able to appropriately read the number of layers / ports, etc., described assuming that the maximum value is "8," assuming that the maximum value is "n."

[0128] It should be noted that in this disclosure, "having the capability of..." may be read interchangeably as "supporting / reporting the capability of...".

[0129] In the present disclosure, the terms rank, transmission rank, number of layers, and number of antenna ports may be interchangeable. Furthermore, the terms "one codeword is applied" and "the number of layers is four or less" may be interchangeable. The terms "two codewords are applied" and "the number of layers is greater than four" may be interchangeable.

[0130] In the present disclosure, a table may be read interchangeably as one or more tables.

[0131] In the present disclosure, the terms table, mapping, correspondence, association, and association may be read interchangeably.

[0132] Furthermore, the DCI in the following embodiments may refer to a DCI that schedules at least one of a PUSCH and a PDSCH (for example, DCI format 0_x, 1_x (where x is an integer)). Furthermore, the following embodiments are based on the premise of codebook-based transmission (PUSCH), but are not limited thereto.

[0133] (Wireless communication method) The embodiments of the present disclosure can be broadly categorized as follows. First embodiment: A table of second precoding information for 3TX UE. Second embodiment: A table of precoding information and the number of layers for 3TX UE. Third embodiment: Reporting of UE capability values ​​for 3TX UE. Each embodiment will be described below based on these. Note that the first and second embodiments correspond to the above-mentioned analysis 1, and the third embodiment corresponds to analysis 2.

[0134] In the present disclosure, each embodiment / option may be applied alone or in combination with other embodiments / options.

[0135] In the present disclosure, the association between the precoding matrix W and the TPMI index may be defined in Specification 1 for Physical Channels and Modulation (Physical channels and modulation / Uplink / Physical channels / Physical uplink shared channel / Precoding). In the present disclosure, the association, table P-x, TMPI table, precoding matrix table, and precoder table may be interchangeable.

[0136] In the present disclosure, the association between the precoding information (TPMI) and the number of layers (TRI) and the index (precoding information field value) may be defined in Specification 2 for Multiplexing and Channel Coding (Multiplexing and Channel Coding / Downlink Transport Channels and Control Information / Downlink Control Information / DCI Formats / DCI Format 0_1). In the present disclosure, the association, Table D-x, TRI / TPMI indication table, DCI indication table, and precoding information table may be interchangeable.

[0137] In the present disclosure, the terms precoding matrix and precoder may be interpreted as interchangeable.

[0138] In the present disclosure, TPMI, TPMI field, and precoding information may be interpreted as interchangeable.

[0139] In the following embodiments, the precoding matrix / precoder may refer to a full / partial / non-coherent precoder.

[0140] In each of the following embodiments, a number (e.g., 0, 1, 2, etc.) corresponding to a certain index (e.g., TPMI index, antenna port index) may be replaced with a number with a # (e.g., #0, #1, #2, etc.).

[0141] The UE may control UL transmission using three antenna ports (3TX UL transmission) by applying each embodiment described later. The NW / BS / gNB may provide / transmit to the UE settings / instructions for the UE to realize this control. Furthermore, the NW / BS / gNB may perform various controls to receive the UL transmission from the UE.

[0142] The 3TX UL transmission of the present disclosure is not limited to single / multiple TRP PUSCHs, but can also be applied to multi-TRP PUSCH repetition in Rel. 17 or STxMP SFN / SDM PUSCH in Rel. 18.

[0143] First Embodiment The first embodiment relates to a second precoding information table for 3TX UEs.

[0144] For PUSCH transmission using three antenna ports (which may be referred to as 3-antenna port PUSCH / 3TX PUSCH), the second precoding information table for 3TX UEs is applicable in at least one of the following cases: - When multi-TRP PUSCH repeated transmission in Rel. 17 is enabled. - When STxMP SFN in Rel. 18 is enabled.

[0145] A Rel. 17 multi-TRP PUSCH may be considered valid when two CB / NCB SRS resource sets are configured.

[0146] The STxMP SFN PUSCH in Rel. 18 may be considered valid when two CB / NCB SRS resource sets are configured and / or the multi-panel scheme is SFN (multipanelScheme=SFNScheme).

[0147] The second precoding information table may be defined, for example, as in the following aspects 1-1 to 1-4.

[0148] [Aspect 1-1] Figures 14A to 14C are diagrams showing an example of a table related to second precoding information for 3TX according to aspect 1-1. Figure 14 shows the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMI.

[0149] 14A shows second precoding information for three antenna ports in the case where the maximum rank number is 1 (maxRank=1) or the maximum rank number in SFN is 1 (maxRankSfn=1). The number of bits required to indicate the table (TPMI) shown in FIG. 14A may be 2 bits.

[0150] As shown in Figure 14A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0151] 14B shows second precoding information for three antenna ports in the case where the maximum rank number is 2 (maxRank=2) or the maximum rank number in SFN is 2 (maxRankSfn=2). The number of bits required to indicate the table (TPMI) shown in FIG. 14B may be 2 bits.

[0152] 14B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 corresponding to layer 1 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit. Bit field indexes 0 to 2 corresponding to layer 2 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit.

[0153] Figure 14C shows second precoding information for three antenna ports in the case where the maximum rank number is 3 (maxRank = 3). The number of bits required to indicate the table (TPMI) shown in Figure 14C may be 2 bits. Note that the maximum rank number (maxRankSfn) in SFN is only applicable in the case of 1 or 2, so it does not need to be considered in Figure 14C.

[0154] As shown in FIG. 14C , when the codebook subset is noncoherent (codebookSubset=nonCoherent) and the maximum rank is 3 (maxRank=3), bit field indices 0 to 2 corresponding to layer 1 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit. Bit field indices 0 to 2 corresponding to layer 2 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit. Bit field index 0 corresponding to layer 3 corresponds to (indicates) TPMI=0, and bit field indices 1 to 3 may be reserved bits.

[0155] [Aspect 1-2] Figures 15A to 15C are diagrams showing an example of a table related to second precoding information for 3TX according to the present invention. Figures 15A to 15C show the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMIs.

[0156] 15A shows second precoding information for three antenna ports in the case where the maximum rank number is 1 (maxRank=1) or the maximum rank number in SFN is 1 (maxRankSfn=1). The number of bits required to indicate the table (TPMI) shown in FIG. 15A may be 2 bits.

[0157] As shown in Figure 15A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0158] 15B shows second precoding information for three antenna ports in the case where the maximum rank number is 2 (maxRank=2) or the maximum rank number in SFN is 2 (maxRankSfn=2). The number of bits required to indicate the table (TPMI) shown in FIG. 15B may be 2 bits.

[0159] 15B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 corresponding to layer 1 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit. Bit field indexes 0 to 2 corresponding to layer 2 correspond to (indicate) TPMI=3 to 5, and bit field index 3 may be a reserved bit.

[0160] Figure 15C shows second precoding information for three antenna ports in the case where the maximum rank number is 3 (maxRank = 3). The number of bits required to indicate the table (TPMI) shown in Figure 15C may be 2 bits. Note that the maximum rank number (maxRankSfn) in SFN is only applicable in the case of 1 or 2, so it does not need to be considered in Figure 15C.

[0161] As shown in FIG. 15C , when the codebook subset is noncoherent (codebookSubset=nonCoherent) and the maximum rank is 3 (maxRank=3), bit field indices 0 to 2 corresponding to layer 1 correspond to (indicate) TPMI=0 to 2, and bit field index 3 may be a reserved bit. Bit field indices 0 to 2 corresponding to layer 2 correspond to (indicate) TPMI=3 to 5, and bit field index 3 may be a reserved bit. Bit field index 0 corresponding to layer 3 corresponds to (indicates) TPMI=6, and bit field indices 1 to 3 may be reserved bits.

[0162] In the case of the tables shown in FIGS. 14 and 15, the number of layers (1 to 3 layers) may be separately specified.

[0163] [Aspect 1-3] Figures 16A to 16C are diagrams showing examples of tables related to second precoding information for 3TX according to aspect 1-3. Figure 16 shows the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMI.

[0164] 16A shows second precoding information for three antenna ports in the case where the maximum rank number is 1 (maxRank=1) or the maximum rank number in SFN is 1 (maxRankSfn=1). The number of bits required to indicate the table (TPMI) shown in FIG. 16A may be 2 bits.

[0165] As shown in Figure 16A, when the codebook subset is non-coherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0166] 16B shows second precoding information for three antenna ports in the case where the maximum rank number is 2 (maxRank=2) or the maximum rank number in SFN is 2 (maxRankSfn=2). The number of bits required to indicate the table (TPMI) shown in FIG. 16B may be 3 bits.

[0167] As shown in Figure 16B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0168] Figure 16C shows second pleading information for three antenna ports in the case where the maximum rank number is 3 (maxRank = 3). The number of bits required to indicate the table (TPMI) shown in Figure 16C may be 3 bits. Note that the maximum rank number (maxRankSfn) in SFN is only applicable in the case of 1 or 2, so it does not need to be considered in Figure 16C.

[0169] As shown in Figure 16C, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indexes 3 to 5 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 2. Bit field index 6 corresponds to (indicates) TPMI 0 in layer 3. Bit field index 7 may be a reserved bit.

[0170] [Aspect 1-4] Figures 17A to 17C are diagrams showing examples of tables related to second precoding information for 3TX according to aspect 1-4. Figure 17 shows the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMI.

[0171] 17A shows second precoding information for three antenna ports in the case where the maximum rank number is 1 (maxRank=1) or the maximum rank number in SFN is 1 (maxRankSfn=1). The number of bits required to indicate the table (TPMI) shown in FIG. 17A may be 2 bits.

[0172] As shown in Figure 17A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0173] 17B shows second precoding information for three antenna ports in the case where the maximum rank number is 2 (maxRank=2) or the maximum rank number in SFN is 2 (maxRankSfn=2). The number of bits required to indicate the table (TPMI) shown in FIG. 17B may be 3 bits.

[0174] As shown in Figure 17B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 3 to 5, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0175] Figure 17C shows second leading information for three antenna ports in the case where the maximum rank number is 3 (maxRank = 3). The number of bits required to indicate the table (TPMI) shown in Figure 17C may be 3 bits. Note that the maximum rank number (maxRankSfn) in SFN is only applicable in the case of 1 or 2, and therefore may not be considered in Figure 17C.

[0176] As shown in Figure 17C, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indexes 3 to 5 correspond to (indicate) TPMIs 3 to 5, respectively, in layer 2. Bit field index 6 corresponds to (indicates) TPMI 6, respectively, in layer 3. Bit field index 7 may be a reserved bit.

[0177] In the case of the tables shown in FIGS. 16 and 17, it may not be necessary to separately specify the number of layers.

[0178] In this way, according to the tables shown in FIGS. 14 to 17, the second precoding information for 3TX can be appropriately indicated.

[0179] According to this embodiment, the UE can control UL transmission by applying the second precoding information for 3TX.

[0180] Second Embodiment The second embodiment relates to a table of precoding information and the number of layers for 3TX UE.

[0181] In this disclosure, the table of precoding information and the number of layers may be referred to as a first table of precoding information.

[0182] For PUSCH transmission using three antenna ports (which may also be referred to as 3-antenna port PUSCH / 3TX PUSCH), the precoding information and layer number table for 3TX UEs is applicable in at least one of the following cases: - When Rel. 17 multi-TRP PUSCH repeat transmission is enabled; - When Rel. 18 STxMP SFN is enabled; - When Rel. 18 STxMP SDM (Space Division Multiplexing) is enabled.

[0183] A Rel. 17 multi-TRP PUSCH may be considered valid when two CB / NCB SRS resource sets are configured.

[0184] The STxMP SFN PUSCH in Rel. 18 may be considered valid when two CB / NCB SRS resource sets are configured and / or the multi-panel scheme is SFN (multipanelScheme=SFNScheme).

[0185] The Rel. 18 single DCI STxMP SDM PUSCH may be considered valid when two CB / NCB SRS resource sets are configured and / or the multi-panel scheme is SFN (multipanelScheme=SDMScheme).

[0186] The table for precoding information may be defined, for example, as in the following aspects 2-1 to 2-4.

[0187] [Aspect 2-1] Figures 18A to 18C are diagrams showing examples of tables relating to precoding information and the number of layers for 3TX according to aspect 2-1. Figure 18 shows the correspondence between the field values ​​(bit fields mapped to indexes) of the precoding information and the number of layers, and the number of layers and TPMI.

[0188] 18A shows precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 1 (maxRank=1), or the maximum rank number in SFN is 1 (max{maxRank, maxRankSfn}=1), or the maximum rank number in SDM is 1 (max{maxRank, maxRankSdm}=1). The number of bits required to indicate the table (TPMI) shown in FIG. 18A may be 2 bits.

[0189] In STxMP, the table shown in FIG. 18 may follow the maximum rank number (max{maxRank, maxRankSfn} or max{maxRank, maxRankSdm}) in SFN / SDM.

[0190] As shown in Figure 18A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0191] 18B shows the precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 2 (maxRank=2), or the maximum rank number in SFN is 2 (max{maxRank, maxRankSfn}=2), or the maximum rank number in SDM is 2 (max{maxRank, maxRankSdm}=2). The number of bits required to indicate the table (TPMI) shown in FIG. 18B may be 3 bits.

[0192] As shown in Figure 18B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0193] 18C shows precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 3 (maxRank=3). The number of bits required to indicate the table (TPMI) shown in FIG. 18C may be 3 bits.

[0194] As shown in Figure 18C, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indexes 3 to 5 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 2. Bit field index 6 corresponds to (indicates) TPMI 0 in layer 3. Bit field index 7 may be a reserved bit.

[0195] [Aspect 2-2] Figures 19A to 19C are diagrams showing examples of tables relating to precoding information and the number of layers for 3TX according to aspect 2-2. Figure 19 shows the correspondence between the field values ​​(bit fields mapped to indexes) of the precoding information and the number of layers, and the number of layers and TPMI.

[0196] 19A shows precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 1 (maxRank=1), or the maximum rank number in SFN is 1 (max{maxRank, maxRankSfn}=1), or the maximum rank number in SDM is 1 (max{maxRank, maxRankSdm}=1). The number of bits required to indicate the table (TPMI) shown in FIG. 19A may be 2 bits.

[0197] As shown in Figure 19A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0198] 19B shows the precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 2 (maxRank=2), or the maximum rank number in SFN is 2 (max{maxRank, maxRankSfn}=2), or the maximum rank number in SDM is 2 (max{maxRank, maxRankSdm}=2). The number of bits required to indicate the table (TPMI) shown in FIG. 19B may be 3 bits.

[0199] As shown in Figure 19B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 3 to 5, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0200] 19C shows precoding information and the number of layers for three antenna ports in the case where the maximum rank number is 3 (maxRank=3). The number of bits required to indicate the table (TPMI) shown in FIG. 19C may be 3 bits.

[0201] As shown in Figure 19C, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indexes 3 to 5 correspond to (indicate) TPMIs 3 to 5, respectively, in layer 2. Bit field index 6 corresponds to (indicates) TPMI 6, respectively, in layer 3. Bit field index 7 may be a reserved bit.

[0202] [Aspect 2-3] The table regarding the second precoding information for 3TX may be applied when STxMP SDM of Rel. 18 is enabled.

[0203] 20A and 20B are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 2-3. In Fig. 20, the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMIs is illustrated.

[0204] 20A shows second precoding information for three antenna ports in the case where the maximum rank number in SDM is 1 (maxRankSdm=1). The number of bits required to indicate the table (TPMI) shown in FIG. 20A may be two bits.

[0205] As shown in Figure 20A, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0206] 20B shows second precoding information for three antenna ports in the case where the maximum rank number in SDM is 2 (maxRankSdm=2). The number of bits required to indicate the table (TPMI) shown in FIG. 20B may be three bits.

[0207] As shown in Figure 20B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0208] [Aspect 2-4] The table regarding the second precoding information for 3TX may be applied when STxMP SDM of Rel. 18 is enabled.

[0209] 21A to 21B are diagrams illustrating an example of a table related to second precoding information for 3TX according to aspect 2-4. In Fig. 21, the correspondence between field values ​​(bit fields mapped to indexes), the number of layers, and TPMIs is illustrated.

[0210] 21A shows second precoding information for three antenna ports in the case where the maximum rank number in SDM is 1 (maxRankSdm=1). The number of bits required to indicate the table (TPMI) shown in FIG. 21A may be two bits.

[0211] As shown in Figure 21A, when the codebook subset is non-coherent (codebookSubset=nonCoherent), bit field indexes 0 to 2 correspond to (indicate) TPMI=0 to 2 in one layer, respectively. Bit field index 3 may be a reserved bit.

[0212] 21B shows second precoding information for three antenna ports in the case where the maximum rank number in SDM is 2 (maxRankSdm=2). The number of bits required to indicate the table (TPMI) shown in FIG. 21B may be three bits.

[0213] As shown in Figure 21B, when the codebook subset is noncoherent (codebookSubset=nonCoherent), bit field indices 0 to 2 correspond to (indicate) TPMIs 0 to 2, respectively, in layer 1. Bit field indices 3 to 5 correspond to (indicate) TPMIs 3 to 5, respectively, in layer 2. Bit field indices 6 and 7 may be reserved bits.

[0214] In this way, according to the tables shown in Figs. 18 to 21, the first / second precoding information for 3TX can be appropriately indicated.

[0215] According to this embodiment, the UE can control UL transmission by applying the first / second precoding information for 3TX.

[0216] Third Embodiment The third embodiment relates to reporting of UE capability values ​​for 3TX UEs.

[0217] In Rel. 17, to facilitate fast panel switching, the UE supports reporting of panels and correspondence between beams (also called beam correspondence) in beam reports, where the UE can report one panel index per CRI / SSBRI.

[0218] Here, the capability reporting procedure between the UE and the gNB will be described. For example, the UE reports panel-specific capabilities (maximum number of SRS ports per panel) to the gNB.

[0219] The gNB transmits a reference signal (RS) for beam measurement to the UE, and the UE performs measurements on the RS for each panel.

[0220] For example, suppose that the measurement value of RS#1 for panel #1 is L1-RSRP#1 and the measurement value of RS#2 for panel #2 is L1-RSRP#2. These measurements may be correspondences between panels and beams (which may also be called beam correspondences).

[0221] The UE sends the correspondence between the panel and the beam in a beam report to the gNB.

[0222] In response to the beam report, the gNB sends settings regarding the UL beam (UL transmission) to the UE.

[0223] The UE performs UL transmission to the gNB based on the setting.

[0224] Thus, considering that the number of antenna ports varies from panel to panel, the UE supports reporting panel-specific capabilities for the maximum number of supported SRS ports, where "panel" may be referred to as "UE capability value set" in the specification.

[0225] Therefore, we propose to extend the reporting of UE capability values ​​to 3TX UEs.

[0226] The UE may report the maximum number of supported SRS ports as 3 in the UE capability report.

[0227] FIG. 22 is a diagram illustrating an example of parameters related to reporting of UE capability values ​​according to the third embodiment.

[0228] As shown in FIG. 22, in UE capability value reporting, the maximum number of supported SRS ports may be 1, 2, 4, or 3 (n1, n2, n3, n4).

[0229] If the UE has cri-RSRP-Index or ssb-Index-RSRP-Index configured in the CSI-ReportConfig for the higher layer parameter reportQuantity, the UE may report a UE capability index indicating the maximum number of supported SRS ports together with the SSBRI / CRI and L1-RSRP pair.

[0230] According to this embodiment, the UE can properly report support for 3TX UL transmission.

[0231] <Supplementary Information> <<Notification of Information to UE>> In the above-described embodiments, notification of any information to the UE [from a Network (NW) (e.g., a Base Station (BS))] (in other words, reception of any information from the BS by the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0232] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader, which is not defined in existing standards.

[0233] When the notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble Cyclic Redundancy Check (CRC) bits assigned to the DCI, the format of the DCI, etc.

[0234] Furthermore, notification of any information to the UE in the above embodiments may be performed periodically, semi-persistently, or aperiodically.

[0235] <<Notification of Information from UE>> In the above-described embodiments, notification of any information from the UE [to the NW] (in other words, transmission / report of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel (e.g., PUCCH, PUSCH, PRACH, reference signal), or a combination thereof.

[0236] When the notification is performed by a MAC CE, the MAC CE may be identified by including a new LCID, which is not defined in existing standards, in the MAC subheader.

[0237] If the notification is made by UCI, the notification may be transmitted using PUCCH or PUSCH.

[0238] Furthermore, any information in the above-described embodiments may be notified from the UE periodically, semi-persistently, or aperiodically.

[0239] <<Regarding Application of Each Embodiment>> In a UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the above-mentioned embodiments may be applied (used) when one or more of the following conditions are met: - a higher layer parameter indicating the specific processes / operations / controls / assumptions / information is configured; - the specific processes / operations / controls / assumptions / information is determined based on related higher layer parameters; - the specific processes / operations / controls / assumptions / information is specified / activated / triggered by a MAC CE / DCI / UCI / resource / channel / RS; - a specific UE capability indicating (or related to) the specific processes / operations / controls / assumptions / information is reported or supported; - the application of the specific processes / operations / controls / assumptions / information is determined based on specific conditions.

[0240] The specific UE capability may indicate at least one of the following: Supporting specific processing / operation / control / information for at least one of the above embodiments, Supporting 3TX UL transmission, Supporting multiple different antenna layouts / number of antenna groups, Supported coherence groups, Supported coherence types (fully coherent / partially coherent / non-coherent), Supporting 3TX UL transmission, single / multiple TRP PUSCH [repeated] transmission, STxMP SFN / SDM transmission.

[0241] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

[0242] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0243] If the above conditions are not met, the UE / BS may follow the behavior specified in existing 3GPP releases.

[0244] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment (first / second embodiment) of the present disclosure. [Supplementary Note 1] A terminal having: a receiver that receives precoding information for uplink (UL) transmission using three antenna ports (3TX); and a controller that controls the 3TX UL transmission based on second precoding information, the second precoding information being associated with a layer number of first precoding information. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the controller determines application of the 3TX UL transmission based on a specific condition, the specific condition being that at least one of: multi-transmit / receive point (TRP) physical uplink shared channel (PUSCH) repeated transmission; simultaneous multi-panel transmission (STxMP) single frequency network (SFN) PUSCH transmission; and STxMP spatial division multiplexing (SDM) PUSCH transmission is enabled. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the controller applies the 3TX UL transmission when two codebook or non-codebook measurement reference signal (SRS) resource sets are configured. [Supplementary Note 4] The terminal according to any one of Supplementary Notes 1 to 3, wherein the precoding information is associated with a specific field and a transmit precoding matrix indicator (TPMI) for each rank number, and a size of the field is different or the same depending on the rank number.

[0245] (Supplementary Note) The following inventions are supplementary notes regarding one embodiment (third embodiment) of the present disclosure. [Supplementary Note 1] A terminal comprising: a transmitter unit that transmits a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX); and a controller that, when supporting the PUSCH transmission, controls to measure correspondence between a panel and a beam based on a received reference signal (RS) and include the result in a beam report, wherein the panel-specific capability report is a terminal capability value set including a maximum number of supported measurement reference signal (SRS) ports. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the maximum number of supported SRS ports is one of 1, 2, 3, and 4. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein, when specific higher layer parameters related to measurement are configured, the controller controls to report an index of the terminal capability value indicating the maximum number of supported SRS ports together with a result of the measurement. [Supplementary Note 4] The terminal according to any one of Supplementary Note 1 to Supplementary Note 3, further comprising a receiving unit that receives precoding information for 3TX UL transmission, wherein the control unit controls the 3TX UL transmission based on second precoding information associated with a number of layers of first precoding information among the precoding information.

[0246] (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.

[0247] 23 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0248] 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.

[0249] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0250] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0251] 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.

[0252] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0253] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0254] 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.

[0255] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0256] 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.

[0257] The core network 30 may include network functions (Network Functions (NF)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0258] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0259] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0260] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0261] 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.

[0262] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.

[0263] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0264] 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.

[0265] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0266] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0267] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0268] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0269] 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.

[0270] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0271] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0272] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0273] 24 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.

[0274] 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.

[0275] 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.

[0276] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0277] 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.

[0278] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0279] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0280] 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.

[0281] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0282] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0283] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0284] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0285] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0286] 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.

[0287] 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.

[0288] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0289] 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.

[0290] The transceiver 120 may transmit precoding information for uplink (UL) transmission using three antenna ports (3TX). The controller 110 may control reception of the 3TX UL transmission by a terminal controlled based on second precoding information associated with the number of layers of first precoding information among the precoding information.

[0291] The transceiver 120 may receive a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX). If the terminal supports the PUSCH transmission, the controller 110 may control reception of a beam report including correspondence between panels and beams measured based on RSs received by the terminal. The panel-specific capability report may be a terminal capability value set including the maximum number of supported SRS ports for measurement.

[0292] (User terminal) Fig. 25 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.

[0293] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0294] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0295] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0296] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0297] 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.

[0298] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0299] 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.

[0300] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0301] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0302] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0303] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0304] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0305] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0306] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0307] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0308] The measurement unit 223 may derive channel measurements for CSI calculation based on the channel measurement resources. The channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on the interference measurement resources. The interference measurement resources may be at least one of an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. Note that CSI-IM may be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS. Note that in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeably read as interchangeable.

[0309] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0310] The transceiver 220 may receive precoding information for uplink (UL) transmission using three antenna ports (3TX). The controller 210 may control the 3TX UL transmission based on second precoding information associated with the number of layers of the first precoding information. The controller 210 may determine whether to apply the 3TX UL transmission based on a specific condition. The specific condition may be that at least one of a multi-transmit / receive point (TRP) physical uplink shared channel (PUSCH) repeated transmission, a simultaneous multi-panel transmission (STxMP) single frequency network (SFN) PUSCH transmission, and an STxMP spatial division multiplexing (SDM) PUSCH transmission is enabled. The controller 210 may apply the 3TX UL transmission when two codebook or non-codebook measurement reference signal (SRS) resource sets are configured. The precoding information is associated with a specific field and a transmit precoding matrix indicator (TPMI) for each rank number, and the size of the field may be different or the same depending on the rank number.

[0311] The transceiver 220 may transmit a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX). If the PUSCH transmission is supported, the controller 210 may control the controller 210 to measure correspondence between the panel and the beam based on the received RS and include the measurement result in a beam report. The panel-specific capability report may be a terminal capability value set including the maximum number of supported SRS ports. The maximum number of supported SRS ports may be 1, 2, 3, or 4. If specific upper layer parameters related to measurement are configured, the controller 210 may control the controller 210 to report a terminal capability value index indicating the maximum number of supported SRS ports together with the measurement result.

[0312] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0313] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0314] 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. Figure 26 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.

[0315] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0316] 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.

[0317] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0318] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0319] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0320] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0321] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0322] 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.

[0323] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0324] 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.

[0325] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0326] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0327] 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.

[0328] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0329] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0330] 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.

[0331] 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.

[0332] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0333] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0334] 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.

[0335] 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.

[0336] 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.

[0337] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0338] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0339] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0340] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0341] 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.

[0342] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0343] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0344] 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."

[0345] 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.

[0346] 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.

[0347] 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.

[0348] 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.

[0349] 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.

[0350] 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.

[0351] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0352] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0353] 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).

[0354] 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).

[0355] 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.

[0356] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0357] 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).

[0358] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "layer," "number of layers," "rank," "resource," "resource set," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," "UE panel," "transmitting entity," "receiving entity," etc. may be used interchangeably.

[0359] In the present disclosure, the term "antenna port" may be interchangeably read as an antenna port for any signal / channel (e.g., a demodulation reference signal (DMRS) port). In the present disclosure, the term "resource" may be interchangeably read as a resource for any signal / channel (e.g., a reference signal resource, an SRS resource, etc.). The resource may include time / frequency / code / space / power resources. Furthermore, the spatial domain transmission filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0360] The group may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, and the like.

[0361] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.

[0362] In addition, in the present disclosure, the terms TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc. may be read interchangeably.

[0363] Furthermore, in the present disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) property," and "specific QCL type (e.g., Type A, Type D)" may be interchangeable.

[0364] In the present disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interchangeable. In the present disclosure, terms such as sequence, list, set, group, cluster, and subset may be interchangeable.

[0365] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information (TCI state)" may be interchangeable with "set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and the TCI may be interchangeable. The spatial relationship information and the spatial relationship may be interchangeable.

[0366] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0367] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0368] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0369] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0370] 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.

[0371] 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.

[0372] 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.

[0373] 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.

[0374] 27 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0375] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0376] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0377] 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.

[0378] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0379] 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.

[0380] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0381] 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.

[0382] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0383] 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.

[0384] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0385] 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.

[0386] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0387] 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.

[0388] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0389] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0390] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0391] 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."

[0392] 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.

[0393] 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.

[0394] 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.

[0395] Furthermore, "determination" may be considered to be "determining" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "determining" some kind of action. In the present disclosure, "determination" may be read interchangeably with the above-mentioned actions.

[0396] Furthermore, in this disclosure, "determine / determining" may be interchangeably read as "assume / assuming," "expect / expecting," "consider / considering," etc. Furthermore, in this disclosure, "does not expect to do..." may be interchangeably read as "assumes not to do...."

[0397] In the present disclosure, "expect" may be interchangeably read as "be expected." For example, "expect(s) ..." ("..." may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as "be expected ...." "does not expect ..." may be interchangeably read as "be not expected ...." Furthermore, "An apparatus A is not expected ..." may be interchangeably read as "an apparatus B other than apparatus A does not expect ... from apparatus A" (e.g., if apparatus A is a UE, apparatus B may be a base station).

[0398] 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.

[0399] 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."

[0400] 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.

[0401] 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."

[0402] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0403] 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.

[0404] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0405] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0406] In the present disclosure, terms such as "when A, B," "if A, (then) B," "B upon A," "B in response to A," "B based on A," "B during / while A," "B before A," "B at (the same time as) / on A," "B after A," "B since A," and "B until A" may be interchangeable. Note that A, B, and the like herein may be replaced with appropriate expressions such as nouns, gerunds, and regular sentences, depending on the context. Note that the time difference between A and B may be approximately zero (immediately after or immediately before). A time offset may also be applied to the time at which A occurs. For example, "A" may be interchangeable with "before / after a time offset at which A occurs." The time offset (eg, one or more symbols / slots) may be predefined or may be specified by the UE based on signaled information.

[0407] In the present disclosure, timing, time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc. may be read interchangeably.

[0408] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The description of the present disclosure is for illustrative purposes only and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. A terminal comprising: a transmitting unit that transmits a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX); and a control unit that, when supporting the PUSCH transmission, controls to measure correspondence between the panel and the beam based on a received reference signal (RS) and include it in the beam report, wherein the panel-specific capability report is a terminal capability value set including the maximum number of supported measurement reference signal (SRS) ports.

2. The terminal of claim 1, wherein the maximum number of supported SRS ports is one of 1, 2, 3, and 4.

3. The terminal according to claim 1, wherein the control unit controls the terminal to report, when specific upper layer parameters related to the measurement are set, an index of a terminal capability value indicating the maximum number of SRS ports supported together with the result of the measurement.

4. The terminal according to claim 1, further comprising a receiving unit that receives precoding information for 3TX UL transmission, wherein the control unit controls the 3TX UL transmission based on second precoding information, among the precoding information, that is associated with the number of layers of the first precoding information.

5. A wireless communication method for a terminal, comprising: a step of transmitting a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX); and a step of controlling, if the PUSCH transmission is supported, to measure correspondence between the panel and the beam based on a received reference signal (RS) and include it in the beam report, wherein the panel-specific capability report is a terminal capability value set including the maximum number of supported measurement reference signal (SRS) ports.

6. A base station comprising: a receiving unit that receives a panel-specific capability report regarding support for uplink (UL) transmission using three antenna ports (3TX); and a control unit that controls the reception of a beam report including correspondence between panels and beams measured based on a reference signal (RS) received by the terminal when the terminal supports the PUSCH transmission, wherein the panel-specific capability report is a terminal capability value set including the maximum number of supported measurement reference signal (SRS) ports.

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