Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is provided with: a reception unit that receives information relating to at least one of a plurality of modulation and coding schemes (MCS) that are used in the transmission of an uplink shared channel (PUSCH) and that correspond to each of a plurality of layers, and an MCS that corresponds to each of a plurality of layer groups; and a control unit that controls the PUSCH transmission of each layer and / or each layer group on the basis of the mapping relationship between the plurality of layers and the plurality of layer groups.

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized for the purpose of further high-speed data rates and low latency (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) has been standardized for the purpose of further large capacity and advancement of LTE (Release (Rel.) 8 and 9 of the Third Generation Partnership Project (3GPP (registered trademark))).

[0003] Successor systems of LTE (also called, for example, 5th generation mobile communication system (5G), 5G+(plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also being studied.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0007] Problems to be solved by the invention

[0008] For future wireless communication systems (e.g., Rel.18 NR), studies are being conducted on the user terminal (UE) using more than 4 layers to transmit more than one code word (CW) / transport block (TB) using an uplink shared channel (Physical Uplink Shared Channel (PUSCH)). Alternatively, studies are being conducted on simultaneous UL transmission using multiple panels.

[0009] However, the details of this operation have not been fully studied. For example, how to apply / map the Modulation and Coding Scheme (MCS) to multiple layers / layer groups / TRPs / panels, or how to control size calculations (e.g., TB size), etc., have not been fully studied. If UL transmission control (e.g., PUSCH transmission control) is not performed appropriately, there is a concern that throughput may be reduced or communication quality may deteriorate.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately perform UL transmission such as PUSCH.

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present disclosure comprises: a receiving unit, which receives information related to at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers, respectively, and MCS corresponding to a plurality of layer groups, respectively, which are used in the transmission of an uplink shared channel (Physical Uplink Shared Channel (PUSCH)); and a control unit, which controls the PUSCH transmission of at least one of each layer and each layer group based on a mapping relationship between the plurality of layers and the plurality of layer groups.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, UL transmission such as PUSCH can be appropriately performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A and Figure 1B This is a diagram showing an example of UL transmission of a single panel.

[0016] Figure 2A-2C This is a diagram showing an example of methods 1 to 3 of simultaneous UL transmission using multiple panels.

[0017] Figure 3 This is a diagram showing an example of PUSCH repetitive transmission to which TDM is applied.

[0018] Figure 4A-4D It is a diagram showing changes in PUSCH repetitive transmission.

[0019] Figure 5A-Figure 5C FIG. 4 is a diagram showing another variation of PUSCH repetitive transmission.

[0020] Figure 6A-6D This is a diagram showing an example of the correspondence relationship between layer groups and layers in each layer number.

[0021] Figure 7 This is a diagram showing an example of mapping between CW layers of 1 CW of a maximum of 4 layers.

[0022] Figure 8 This is a diagram showing an example of CW-layer mapping of 1 CW of a maximum of 8 layers (eg, layers 5 to 8).

[0023] Fig. 9 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0024] Fig.10 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0025] Fig.11 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0026] Fig.12 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment.

[0027] Fig.13 This is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0028] (Spatial relationship between SRS and PUSCH)

[0029] The UE may also receive information (SRS configuration information, for example, parameters in “SRS-Config” of the RRC control element) used in transmission of a measurement reference signal (for example, a sounding reference signal (SRS)).

[0030] Specifically, the UE may also receive at least one of information related to one or more SRS resource sets (SRS resource set information, such as "SRS-ResourceSet" of the RRC control element) and information related to one or more SRS resources (SRS resource information, such as "SRS-Resource" of the RRC control element).

[0031] One SRS resource set may be associated with a specific number of SRS resources (or the specific number of SRS resources may be grouped). Each SRS resource may be identified by an SRS resource identifier (SRS Resource Indicator (SRI)) or an SRS resource ID (Identifier).

[0032] The SRS resource set information may also 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 the usage of the SRS.

[0033] Here, the SRS resource type may also represent any one of periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic SRS (A-SRS, AP-SRS). In addition, the UE may also periodically (or periodically after activation) send P-SRS and SP-SRS, and send A-SRS based on the SRS request of the DCI.

[0034] In addition, the usage (RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse") may also be, for example, beam management (beamManagement), codebook-based transmission (codebook: CB), non-codebook-based transmission (nonCodebook: NCB), antenna switching (antennaSwitching), etc. The SRS for codebook-based transmission or non-codebook-based transmission may also be used to determine the precoder for codebook-based or non-codebook-based PUSCH transmission based on SRI.

[0035] For example, in the case of codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI) and Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI.

[0036] SRS resource information may also include SRS resource ID (SRS-ResourceId), SRS port number, SRS port number, transmission comb (Comb), SRS resource mapping (for example, time and / or frequency resource location, resource offset, resource period, number of repetitions, number of SRS code elements, SRS bandwidth, etc.), hopping association information, SRS resource type, sequence ID, SRS spatial relationship information, etc.

[0037] The spatial relationship information of SRS (for example, "spatialRelationInfo" of RRC information element) can also indicate the spatial relationship information between a specific reference signal and SRS. The specific reference signal can also be at least one of a synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, a channel state information reference signal (CSI-RS), and an SRS (for example, other SRS). The SS / PBCH block can also be called a synchronization signal block (SSB).

[0038] The spatial relationship information of SRS may also include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific reference signal.

[0039] In addition, in the present disclosure, the SSB index, SSB resource ID, and SSBRI (SSB Resource Indicator) may also be overwritten with each other. In addition, the CSI-RS index, CSI-RS resource ID, and CRI (CSI-RS Resource Indicator) may also be overwritten with each other. In addition, the SRS index, SRS resource ID, and SRI may also be overwritten with each other.

[0040] The spatial relationship information of the SRS may also include a serving cell index, a BWP index (BWP ID), etc. corresponding to the above-mentioned specific reference signal.

[0041] In NR, the transmission of uplink signals can also be controlled based on the presence or absence of beam correspondence (BC). BC can also be, for example, the ability of a certain node (e.g., base station or UE) to determine the beam (transmit beam, Tx beam) used in signal transmission based on the beam (receive beam, Rx beam) used in signal reception.

[0042] In addition, BC can also be called Tx / Rx beam correspondence, beam reciprocity, beam calibration, calibrated / non-calibrated, reciprocity calibrated / non-calibrated, correspondence, consistency, etc.

[0043] For example, in the absence of BC, the UE may also send uplink signals (e.g., PUSCH, PUCCH, SRS, etc.) using the same beam (spatial domain transmit filter) as the SRS (or SRS resources) indicated from the base station based on the measurement results of one or more SRS (or SRS resources).

[0044] On the other hand, in the presence of BC, the UE may also send uplink signals (e.g., PUSCH, PUCCH, SRS, etc.) using a beam (spatial domain receive filter) that is the same as or corresponds to the beam (spatial domain receive filter) used in the reception of a specific SSB or CSI-RS (or CSI-RS resource).

[0045] When spatial relationship information about SSB or CSI-RS and SRS is set for a certain SRS resource (for example, when there is BC), the UE may also use the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain receive filter) used for receiving the SSB or CSI-RS to transmit the SRS resource. In this case, the UE may also assume that the UE receive beam of the SSB or CSI-RS is the same as the UE transmit beam of the SRS.

[0046] In the case where spatial relationship information related to other SRS (reference SRS) and the SRS (target SRS) is set for a certain SRS (target SRS) resource (for example, in the case of no BC), the UE may also use the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain transmit filter) used for transmitting the reference SRS to transmit the target SRS resource. That is, in this case, the UE may also assume that the UE transmit beam of the reference SRS is the same as the UE transmit beam of the target SRS.

[0047] The UE may also determine the spatial relationship of the PUSCH scheduled by the DCI based on the value of a specific field (e.g., SRS resource identifier (SRI) field) in the DCI (e.g., DCI format 0_1). Specifically, the UE may also use the spatial relationship information of the SRS resource determined based on the value of the specific field (e.g., SRI) (e.g., "spatialRelationInfo" of the RRC information element) for PUSCH transmission.

[0048] For PUSCH, when codebook-based transmission is used, the UE may also be configured with two SRS resources through RRC, and one of the two SRS resources may be indicated through DCI (a 1-bit specific field). For PUSCH, when non-codebook-based transmission is used, the UE may also be configured with four SRS resources through RRC, and one of the four SRS resources may be indicated through DCI (a 2-bit specific field). In order to use a spatial relationship other than the two or four spatial relationships configured through RRC, RRC reconfiguration is required.

[0049] In addition, the spatial relationship of the SRS resources for PUSCH can be set for DL-RS. For example, for SP-SRS, the UE can be set with the spatial relationship of multiple (eg, up to 16) SRS resources through RRC, and one of the multiple SRS resources can be indicated through MAC CE.

[0050] (UL TCI status)

[0051] In Rel.16 NR, the use of UL TCI status is being studied as a UL beam indication method. The notification of UL TCI status is similar to the notification of DL beam (DL TCI status) of UE. In addition, DL TCI status can also be rewritten with TCI status for PDCCH / PDSCH.

[0052] The channel / signal (also referred to as target channel / RS) for which the UL TCI state is set (specified) may be at least one of, for example, PUSCH (DMRS of PUSCH), PUCCH (DMRS of PUCCH), Physical Random Access Channel (PRACH), SRS, etc.

[0053] In addition, the RS (source RS) that forms a QCL relationship with the channel / signal can be, for example, a DL RS (for example, SSB, CSI-RS, TRS, etc.) or a UL RS (for example, SRS, SRS for beam management, etc.).

[0054] In the UL TCI state, the RS that is in a QCL relationship with the channel / signal can also be associated with the panel ID used to receive or send the RS. This association can be explicitly set (or specified) through high-level signaling (for example, RRC signaling, MAC CE, etc.) or can be implicitly determined.

[0055] The correspondence between the RS and the panel ID may be set by being included in the UL TCI status information, or may be set by being included in at least one of the resource setting information, the spatial relationship information, etc. of the RS.

[0056] The QCL type indicated by the UL TCI status may be an existing QCL type AD or other QCL types, and may also include a specific spatial relationship, an associated antenna port (port index), and the like.

[0057] For UL transmission, if the UE is assigned an associated panel ID (for example, assigned through DCI), it may also use the panel corresponding to the panel ID to perform the UL transmission. The panel ID may also be associated with the UL TCI state. When the UE is assigned (or activated) the UL TCI state for a specific UL channel / signal, it may also determine the panel used for the UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0058] (Single panel sending)

[0059] The single-panel UL transmission mode or the single-panel UL transmission mode candidate may also be applied with at least one of the following transmission modes A and B (single-panel UL transmission modes A and B). In addition, in the present disclosure, the panel / UE panel may also be rewritten as a UE capability value set (e.g., UE capability value set) reported according to each UE capability. In addition, in the present disclosure, different panels, different spatial relationships, different joint TCI states, different TPC parameters, different antenna ports, etc. may also be rewritten with each other.

[0060] [Transmission method A: single-panel single TRP UL transmission]

[0061] In Rel.15 and Rel.16, the UE uses a transmission method of transmitting UL to one TRP from only one beam and panel at one time point ( Figure 1A ).

[0062] [Transmission method B: single-panel multi-TRP UL transmission]

[0063] In Rel.17, a study is underway to perform UL transmission from only one beam and panel at a time point and to perform repeated transmission for multiple TRPs ( Figure 1B ).exist Figure 1B In the example, after the UE sends PUSCH from panel #1 to TRP #1 (switching beams and panels), it sends PUSCH from panel #2 to TRP #2. The two TRPs are connected via an ideal backhaul.

[0064] (Multi-panel sending)

[0065] In Rel.18 and later, in order to improve UL throughput / reliability, research is being conducted to support simultaneous UL transmission using multiple panels for more than one TRP (for example, simultaneous multi-panel UL transmission (SiMPUL)). In addition, multi-panel UL transmission methods are being studied for specific UL channels (for example, PUSCH / PUCCH), etc.

[0066] As a multi-panel UL transmission, for example, a maximum of X (for example, X=2) and a maximum of Y (for example, Y=2) panels may also be supported. In multi-panel UL transmission, when supporting UL precoding indication for PUSCH, a codebook supporting an existing system (for example, before Rel.16) may also be sent to multiple panels simultaneously. Considering multi-TRP operation based on single DCI and multi-DCI, the number of layers may be a maximum of x (for example, x=4) in the full panel, and the number of codewords (CW) may be a maximum of y (for example, y=2) in the full panel.

[0067] The multi-panel UL transmission method or the multi-panel UL transmission method candidate is studying at least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3). It is also possible to support only one of the transmission methods 1 to 3. It is also possible to support multiple methods including at least one of the transmission methods 1 to 3, and one of the multiple transmission methods is set to the UE.

[0068] [Transmission method 1: coherent multi-panel UL transmission]

[0069] Multiple panels can also be synchronized with each other. All layers can also be mapped to all panels. Multiple simulated beams are indicated. The SRS Resource Indicator (SRI) field can also be extended. This method can also use a maximum of 4 layers for UL.

[0070] exist Figure 2A In the example, the UE maps one codeword (CW) or one transport block (TB) to L layers (PUSCH (1, 2, ..., L)), and transmits L layers from each of the two panels. Panel #1 and Panel #2 are coherent. Transmission mode 1 can obtain diversity gain. The total number of layers in the two panels is 2L. When the maximum number of layers is 4, the maximum number of layers in one panel is 2.

[0071] [Transmission mode 2: non-coherent multi-panel UL transmission of one codeword (CW) or transport block (TB)]

[0072] Multiple panels may also be asynchronous. Different layers are mapped to different panels, and one CW or TB for PUSCH from multiple panels. Layers corresponding to one CW or TB may also be mapped to multiple panels. The transmission method may also use a maximum of 4 layers or a maximum of 8 layers for UL. In the case of supporting a maximum of 8 layers, the transmission method may also support one CW or TB using a maximum of 8 layers.

[0073] exist Figure 2B In the example, the UE maps 1CW or 1TB to k layers (PUSCH (1, 2, ..., k)) and Lk layers (PUSCH (k+1, k+2, ..., L)), transmits k layers from panel #1, and transmits Lk layers from panel #2. Transmission mode 2 can obtain the gain of multiplexing and diversity. The total number of layers in the two panels is L.

[0074] [Transmission method 3: Non-coherent multi-panel UL transmission of two CW or TB]

[0075] Multiple panels may also be asynchronous. Different layers may also be mapped to different panels, and two CWs or TBs for PUSCH from multiple panels. Layers corresponding to one CW or TB may also be mapped to one panel. Layers corresponding to multiple CWs or TBs may also be mapped to different panels. The transmission method may also use a maximum of 4 layers or a maximum of 8 layers for UL. In the case of supporting a maximum of 8 layers, the transmission method may also support a maximum of 4 layers per CW or TB.

[0076] exist Figure 2CIn the example, the UE maps CW#1 or TB#1 of 2CW or 2TB to k layers (PUSCH (1, 2, ..., k)), maps CW#2 or TB#2 to Lk layers (PUSCH (k+1, k+2, ..., L)), sends k layers from panel #1, and sends Lk layers from panel #2. Transmission mode 3 can obtain the gain of multiplexing and diversity. The total number of layers in the two panels is L.

[0077] In each of the above-mentioned transmission modes, the base station may also use UL TCI or panel ID to set or indicate panel-specific transmission for UL transmission. UL TCI (UL TCI state) may also be based on signaling similar to DL beam indication supported in Rel.15. The panel ID may also be implicitly or explicitly applied to the transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. In the case where the panel ID is explicitly notified, the panel ID may also be set in at least one of the target RS, target channel, and reference RS (for example, DL RS resource setting or spatial relationship information).

[0078] In one or more of the above-mentioned transmission methods / modes, multi-panel UL transmission (e.g., simultaneous multi-panel transmission (Simultaneous Transmission across Multiple Panels (STxMP))) for scheduling of PUSCH based on one DCI (single DCI) / scheduling of PUSCH based on multiple DCIs (multi-DCI) is being studied.

[0079] In STxMP, the following method can also be applied.

[0080] Single DCI (S-DCI) Space Division Multiplexing (SDM) method: Different layers / DMRS ports of a PUSCH are precoded separately and sent simultaneously from different UE beams / panels.

[0081] S-DCI Frequency Division Multiplexing (FDM)-A mode: Different parts of the frequency domain resources of a PUSCH transmission opportunity are transmitted from different UE beams / panels.

[0082] S-DCI FDM-B method: a method of sending two PUSCH transmission opportunities of the same / different RV of the same TB from different UE beams / panels on non-overlapping frequency domain resources and the same time domain resources.

[0083] S-DCI SFN-based transmission method: the same PUSCH / DMRS is sent simultaneously from two different UE beams / panels.

[0084] S-DCI spatial domain repetition mode: Two PUSCH transmission opportunities with different redundancy versions (Redundancy Version (RV)) of the same TB are transmitted from two different UE beams / panels on the same time and frequency resources.

[0085] M-DCI mode: a mode in which two overlapping (completely / partially overlapping in the time domain, completely / partially overlapping in the frequency domain, or non-overlapping) PUSCHs are transmitted from two different UE beams / panels.

[0086] In addition, in the present disclosure, repeatedly sending and sending may also be replaced with each other. Sending multiple TBs may also mean sending the same TB or sending different TBs.

[0087] [Time Division Multiplexing (TDM)]

[0088] The UE may also assume that repeated transmission of the PUSCH to which time division multiplexing (TDM) is applied is scheduled to different time resources and the same frequency resources. Figure 3 FIG. 1 is a diagram showing an example of repeated transmission of a PUSCH to which TDM is applied. Figure 3 In the embodiment, the frequency resources of PUSCH / PUCCH repetition #1 and repetition #2 are the same, but the time resources are different.

[0089] [Frequency Division Multiplexing (FDM)]

[0090] The UE may also assume that the PUSCH / PUCCH repetitive transmission using frequency division multiplexing (FDM) is scheduled to the same time resource and different frequency resources. That is, the UE may also transmit the PUSCH / PUCCH repetitive transmission using FDM in the same time resource and different frequency resources when using coherent multiple panels.

[0091] Figure 4A This is a diagram showing a first example of iterative transmission to which FDM (FDM-A) is applied. Figure 4A An example is shown in which PUSCH / PUCCH is repeatedly transmitted once for one TB / UCI.

[0092] Figure 4B This is a diagram showing a second example of repeated transmission to which FDM (FDM-B) is applied. Figure 4BAn example is shown in which PUSCH / PUCCH is repeatedly transmitted twice for one TB / UCI.

[0093] Figure 4C This is a diagram showing an example of repeated transmission to which a single frequency network (SFN) is applied. Figure 4C An example is shown in which, for one TB / UCI, one PUSCH / PUCCH is transmitted using different beams / panels.

[0094] [Space Division Multiplexing (SDM)]

[0095] The UE may also assume that the PUSCH repetitive transmissions to which space division multiplexing (SDM) is applied are scheduled to the same time resources and the same frequency resources. That is, when using coherent multiple panels, the UE may also transmit the PUSCH repetitive transmissions to which SDM is applied in the same time resources and the same frequency resources.

[0096] Figure 4D FIG. 1 is a diagram showing an example of repeated transmission to which SDM is applied. Figure 4D In the example, the time and frequency resources of PUSCH / PUCCH repetition #1 and repetition #2 are the same.

[0097] Figure 5A FIG. 4 is a diagram showing an example of repeated transmission using SDM in one CW. Figure 5A In the example, the time and frequency resources of layers #1-2 and layers #3-4 corresponding to PUSCH / PUCCH are the same.

[0098] Figure 5B FIG. 4 is a diagram showing an example of repeated transmission using SDM in two CWs. Figure 5B In the example, the time and frequency resources of CW#1 and CW#2 corresponding to PUSCH / PUCCH are the same.

[0099] Figure 5C 1 is a diagram showing an example of a case where at least a portion of the time and frequency resources of the PUSCH / PUCCH corresponding to each of a plurality of TBs overlap. Figure 5C In the example, the time and frequency resources of PUSCH / PUCCH#1 corresponding to the first TB / UCI and PUSCH / PUCCH#2 corresponding to the second TB / UCI are the same.

[0100] (Transmission with more than 4 antenna ports)

[0101] In Rel.15 / 16 NR, a maximum of 4 layers of uplink (UL) Multi Input Multi Output (MIMO) transmission are supported. For future wireless communication systems, in order to achieve higher spectrum efficiency, research is underway to support UL transmission with more than 4 layers. For example, for Rel.18 NR, research is underway to support a maximum of 6-rank transmission using 6 antenna ports, and a maximum of 6 or 8-rank transmission using 8 antenna ports.

[0102] For example, the eight antennas can be configured in one dimension (1 dimensional (1D)) or in two dimensions (2 dimensional (2D)). In the former case, for example, an antenna structure having four cross-polarized antennas arranged in the horizontal direction is considered, and in the latter case, an antenna structure having two cross-polarized antennas arranged two by two in the horizontal and vertical directions is considered.

[0103] In addition, the antenna layout is not limited to this. For example, the number of panels on which antennas are configured, the orientation of the panels, the coherence of each panel / antenna (complete coherence, partial coherence, incoherence, etc.), the arrangement of antennas in a specific direction (horizontal, vertical, etc.), and the polarization antenna structure (single polarization, cross polarization, the number of polarization planes, etc.) can be arbitrarily set.

[0104] In addition, in Rel.15 / 16 NR, the transmission of one codeword (Codeword (CW)) in one PUSCH is supported, and for Rel.18 NR, the UE is studying the transmission of more than one CW in one PUSCH. For example, support for 2CW transmission for ranks 5-8, support for 2CW transmission for ranks 2-8, etc. are being studied.

[0105] In addition, in Rel.15 and Rel.16 UEs, it is assumed that only one beam / panel is used for UL transmission at a time, but in Rel.17 and later, in order to improve UL throughput and reliability, simultaneous UL transmission (for example, PUSCH transmission) of multiple beams / multiple panels is being studied for more than one TRP. In addition, simultaneous PUSCH transmission of multiple beams / multiple panels can correspond to PUSCH transmission of more than 4 layers or less than 4 layers.

[0106] In addition, a precoding matrix for UL transmission using more than 4 antenna ports (antenna ports more than 4) is being studied. For example, a codebook for 8-port transmission (also referred to as 8 TX UL codebook, etc.) is being studied.

[0107] (Transport block size)

[0108] In Rel.16 NR, a table (MCS table) that associates the modulation order, the coding rate (also called the assumed coding rate, the target coding rate, etc.), and the index (for example, the MCS index) representing the modulation order and the coding rate may also be specified (which may also be stored in the UE). In addition, in addition to the above three items, the spectral efficiency may also be associated with the MCS table.

[0109] The UE may also receive DCI for scheduling PUSCH (UL grant, at least one of DCI formats 0_x (x is, for example, 0, 1, 2, etc.)), and determine the modulation order (Qm) and coding rate (R) for PUSCH based on the MCS table and the MCS index included in the DCI. The DCI for scheduling may also be called scheduling DCI.

[0110] In Rel.16 NR, the UE may also use at least one of the following steps 1) to 4) to determine the TBS for PUSCH.

[0111] Step 1)

[0112] The UE determines the number of REs in a time slot (N RE ).

[0113] Specifically, the UE may also determine the number of REs (N') allocated to the PUSCH within 1PRB. RE For example, the UE determines the number of REs (N') allocated to the PUSCH within 1 PRB based on at least one parameter shown in the following equation (1): RE ).

[0114] Formula (1)

[0115]

[0116] Here, N RB SC is the number of subcarriers per 1RB, for example, it can also be N RB SC =12. N sh symb is the number of symbols (eg, OFDM symbols) scheduled in a time slot.

[0117] N PRB DMRSIt is the number of REs for DMRS per 1 PRB in the scheduled period. The number of REs for DMRS may include the group overhead related to code division multiplexing (CDM) of the DMRS indicated in the scheduling DCI.

[0118] N PRB oh It can also be a value set (configured) by a high-level parameter. For example, N PRB oh It may also be an overhead indicated by a higher layer parameter (Xoh-PUSCH), which may be any value of 0, 6, 12, or 18. When Xoh-PUSCH is not configured (notified) to the UE, Xoh-PUSCH may also be configured to 0. In addition, in message 3 (msg3) of the random access procedure, Xoh-PUSCH is configured to 0.

[0119] In addition, the UE can also determine the total number of REs allocated to the PUSCH (N RE ). The UE determines the number of REs allocated to PUSCH in 1PRB (N' RE ) and the total number of PRBs allocated to the UE (n PRB ), determines the total number of REs allocated to PUSCH (N RE ) (for example, the following formula (2)).

[0120] Formula (2)

[0121]

[0122] In addition, the UE can also allocate the number of REs (N') allocated to the PUSCH in 1PRB according to specific rules. RE ) is quantized based on the quantized RE number and the total number of PRBs allocated to the UE (n PRB ) determines the total number of REs allocated to PUSCH (N RE ).

[0123] Step 2)

[0124] UE determines the intermediate number of information bits (N info Specifically, the UE may also determine the intermediate number (N) based on at least one parameter shown in the following formula (3): info In addition, the intermediate number (N info ) may also be referred to as temporary TBS (TBS temp )wait.

[0125] Formula (3)

[0126]

[0127] Here, N RE is the total number of REs allocated to PUSCH. R is the coding rate associated with the MCS index contained in the DCI in the MCS table. Q m is the modulation order associated with the MCS index contained in the DCI in the MCS table. υ is the number of PUSCH layers.

[0128] Step 3)

[0129] The median number of information bits (N) determined in step 2) info ) is below (or less than) a specific threshold value (e.g., 3824), the UE may also quantize the intermediate number to determine the quantized intermediate number (N' info ). The UE can also use, for example, equation (4) to calculate the quantized intermediate number (N' info ).

[0130] Formula (4)

[0131]

[0132] here,

[0133] In addition, the UE uses a specific table (eg, a table that associates TBSs with indices (also called a quantization table or TBS table, etc.)) to search for (find) the quantized intermediate number (N' info ) or above (not less than), the most recent TBS.

[0134] Step 4)

[0135] On the other hand, the median number of information bits (N) determined in step 2) info ) is greater than a specific threshold (e.g., 3824) (or is above a specific threshold), the UE may also set the intermediate number (N info ) quantized, determining the intermediate number to be quantized (N' info ). For example, the UE can also use equation (5) to calculate the quantized intermediate number (N' info ). In addition, the round function can also round the decimal point upwards.

[0136] Formula (5)

[0137]

[0138] here,

[0139] Here, when the coding rate (R) associated with the MCS index in the DCI in the above-mentioned MCS table is below (or less than) a specific threshold (e.g., 1 / 4), the UE may also determine the TBS based on at least one parameter shown in the following equation (6) (e.g., using equation (6)).

[0140] Formula (6)

[0141]

[0142] here,

[0143] N' info is a quantized intermediate number, and can be calculated using, for example, the above equation (5). In addition, C is the number of code blocks (CB: code blocks) into which the TB is divided.

[0144] On the other hand, when the coding rate (R) is greater than a specific threshold (e.g., 1 / 4) (or is above a specific threshold) and the intermediate number (N') of information bits quantized info ) is greater than a specific threshold (e.g., 8424) (or is above a specific threshold), the UE may also determine the TBS based on at least one parameter shown in the following equation (7) (e.g., using equation (7)).

[0145] Formula (7)

[0146]

[0147] here,

[0148] In addition, when the above-mentioned coding rate (R) is below (or less than) a specific threshold value (e.g., 1 / 4) and the quantized intermediate number (N'info) is below (or less than) a specific threshold value (e.g., 8424), the UE may also determine the TBS based on at least one parameter shown in the following equation (8) (e.g., using equation (8)).

[0149] Formula (8)

[0150]

[0151] Thus, in Rel.16 NR, the UE uses the number of REs (N) that can be used for PUSCH in a time slot. RE ), coding rate (R), modulation order (Qm), and number of layers to determine the median number of information bits (N info ), based on this intermediate number (N info) is used to determine the TBS used for PUSCH based on the quantized intermediate number (N'info).

[0152] However, it is also envisioned that in the above-mentioned UL transmission with more than 4 antenna ports (e.g., 8Tx), a different MCS is required (or applied) for each layer / layer group. In addition, in simultaneous multi-panel transmission (STxMP (e.g., SDM method)), it is also envisioned that a different MCS is required (or applied) for each panel / TRP.

[0153] To support MCS per layer / layer group / panel / TRP, the following scenarios 1 / 2 are being studied.

[0154] Case 1: 2 TB / CW are sent in PUSCH, and MCS is indicated per TB / CW

[0155] Case 2: 1TB / CW is sent in PUSCH, MCS is indicated per layer / layer group (or, panel / TRP) per 1TB / CW

[0156] However, when the MCS is indicated by layer / layer group (or panel / TRP) per 1TB / CW as in Case 2, how to control the mapping of layers and layer groups (or, the association of layers and layer groups) becomes a problem. Alternatively, how to control the mapping of layers and panels / TRP (or, the association of layers and panels / TRP) becomes a problem.

[0157] Furthermore, when the MCS is indicated per layer / layer group (or panel / TRP) of 1 TB / CW as in Case 2, how to control the TB size of UL transmission (eg, PUSCH transmission) becomes a problem.

[0158] Therefore, the inventors of the present invention focused on the situation where the MCS is indicated per layer / layer group (or panel / TRP) per 1 TB / CW (for example, the above-mentioned situation 2), and conceived a method for appropriately performing PUSCH transmission.

[0159] The embodiments of the present disclosure are described in detail below. The wireless communication methods of each embodiment may be applied individually or in combination.

[0160] In the present disclosure, "A / B" and "at least one of A and B" may be replaced with each other. In addition, in the present disclosure, "A / B / C" may also mean "at least one of A, B, and C".

[0161] In the present disclosure, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. may also be mutually rewritten. In the present disclosure, support, control, controllable, operate, and operate, etc. may also be mutually rewritten.

[0162] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, high-layer parameters, fields, Information Element (IE), settings, etc. may also be overwritten with each other. In the present disclosure, Medium Access Control (MAC) Control Element (CE), update commands, activation / deactivation commands, etc. may also be overwritten with each other.

[0163] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0164] In the present disclosure, MAC signaling may also use, for example, MAC Control Element (MACCE), MAC Protocol Data Unit (PDU), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0165] In the present disclosure, the physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI)), etc.

[0166] In the present disclosure, an index, an identifier (ID), an indicator, a resource ID, etc. may also be overwritten with each other. In the present disclosure, a sequence, a list, a set, a group, a group, a cluster, a subset, etc. may also be overwritten with each other.

[0167] In the present disclosure, panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmission entity, transmission / reception point (TRP)), base station, spatial relation information (SpatialRelation Information (SRI)), spatial relation, SRS resource indicator (SRS Resource Indicator (SRI)), control resource set (COntrol REsource SET (CORESET)), physical downlink shared channel (Physical Downlink Shared Channel (PDSCH)), codeword (Codeword (CW)), transport block (TransportBlock (TB)), reference signal (Reference Signal (RS)), antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (Code Division Multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink control channel (Physical Uplink Control Channel (PUCCH)) group, PUCCH resource group), resources (for example, reference signal resources, SRS resources), resource sets (for example, reference signal resource sets), CORESET pool, downlink transmission configuration indication state (Transmission Configuration Indication state (TCI state))) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), common TCI state (common TCI state), Quasi-Co-Location (Quasi-Co-Location (QCL)), QCL assumptions, etc. can also be rewritten with each other.

[0168] In addition, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) can also be overwritten with each other. "Spatial relationship information" can also be overwritten with "a set of spatial relationship information", "one or more spatial relationship information", etc. TCI state and TCI can also be overwritten with each other.

[0169] (Wireless Communication Method)

[0170] The UE may also receive information about the layers / layer groups used in the transmission of the PUSCH, information about the mapping (or association) between the layers and the layer groups, and information about at least one of the MCSs corresponding to each layer / layer group through RRC / MAC CE / DCI. The UE may also control the PUSCH transmission of at least one of each layer and each layer group based on the mapping relationship between multiple layers and multiple layer groups.

[0171] The following embodiments can be suitably applied to 1CW PUSCH transmission (eg 8Tx PUSCH) / simultaneous multi-panel transmission (STxMP PUSCH SDM method) using MCS for each layer / layer group. Of course, the configuration to which the embodiments can be applied is not limited to this.

[0172] In the following description, 8Tx PUSCH may be rewritten as PUSCH using more than 4 antenna ports.

[0173] <First Embodiment>

[0174] The first embodiment relates to mapping between layers and layer groups (or association between layers and layer groups) when the MCS is indicated for each layer group of the PUSCH. The indication may be rewritten as a setting or an application.

[0175] In the case of using multiple layers for PUSCH transmission, layer groups may also be set / applied / supported. Each layer group may also be a structure that includes more than one layer. MCS may also be indicated for each layer group. The UE may also control PUSCH transmission by separately applying MCS for each PUSCH layer group.

[0176] [8Tx PUSCH]

[0177] As mapping between layers and layer groups, at least one of the following options 1-1 to 1-2 may also be applied.

[0178] 《Option 1-1》

[0179] The mapping (or association) between layers and layer groups may also be defined in advance via specifications or the like.

[0180] The number of layer groups and the number of layers in each layer group may also be defined in advance. For example, layers #0 to #X may be defined as the first layer group, and layers #X+1 to #Y may be defined as the second layer group.

[0181] The number of layer groups or the number of layers included in each layer group may be defined based on the number of layers applied / configured for PUSCH transmission. In other words, different mappings may be defined for each total number of PUSCH layers.

[0182] For example, for 8-layer PUSCH, layers #0 to #3 may correspond to the first layer group, and layers #4 to #7 may correspond to the second layer group (refer to Fig. 6A ).

[0183] For 7-layer PUSCH, layers #0~#3 may correspond to the first layer group, and layers #4~#6 may correspond to the second group (refer to Figure 6B ). Alternatively, layers #0 to #2 may correspond to the first layer group, and layers #3 to #6 may correspond to the second layer group.

[0184] For 6-layer PUSCH, layers #0~#3 may correspond to the first layer group, and layers #4~#5 may correspond to the second group (refer to Figure 6C ). Alternatively, layers #0 to #1 may correspond to the first layer group, and layers #2 to #5 may correspond to the second layer group. Alternatively, layers #0 to #2 may correspond to the first layer group, and layers #3 to #5 may correspond to the second layer group.

[0185] For 5-layer PUSCH, it is also possible that layers #0~#3 correspond to the first layer group, and layer #4 corresponds to the second group (refer to Fig.6D ). Alternatively, layer #0 may correspond to the first layer group, and layers #1 to #4 may correspond to the second group. Alternatively, layers #0 to #2 may correspond to the first layer group, and layers #3 to #4 may correspond to the second group. Alternatively, layers #0 to #1 may correspond to the first layer group, and layers #2 to #4 may correspond to the second group.

[0186] Here, the case where two layer groups are applied / supported is shown, but the number of layer groups may be greater than 3. Alternatively, the number of layer groups applied / supported may also be different based on the total number of layers applied in PUSCH transmission. For example, the number of layer groups where more than 3 are applied to M layers is smaller than the number of layer groups where less than 2 are applied to M layers.

[0187] 《Option 1-2》

[0188] Information related to mapping (or association) between layers and layer groups may also be set / indicated from the base station (or network) to the UE using RRC / MAC CE / DCI.

[0189] For example, the base station may also use RRC / MAC CE / DCI to set / indicate information related to the number of layer groups / information related to the number of layers included in each layer group to the UE. The UE may also determine the correspondence between the layer group and each layer based on the information set / indicated from the base station. For example, at least one of the set layer group (or layer group index), the number of layers (or layer index), and the number of layers corresponding to each layer group (or the layer index corresponding to each layer group index) may be included in the RRC parameters related to the PUSCH setting (e.g., PUSCHconfig) or in other RRC parameters.

[0190] In Option 1-1 / Option 1-2, information related to the MCS corresponding to each layer group (or applied in each layer group) can also be set / indicated to the UE from the base station (or network) using RRC / MAC CE / DCI.

[0191] The MCS of each layer group can also be supported / applied when specific conditions are met. The specific condition can also be at least one of the number of PUSCH layers and the setting of specific RRC parameters. For example, when the number of PUSCH layers is greater than a specific value (X), the MCS can also be set / applied separately for each layer group. The specific value (X) can also be, for example, 4, 6 or other values. Alternatively, when a specific high-layer parameter is set / the number of PUSCH layers is greater than a specific value, the UE applies the MCS separately for each layer group.

[0192] [STxMP PUSCH]

[0193] The mapping (or association) of layers and layer groups may also be determined based on the panel / TRP / TCI / SRI / SRS resource sets to which each layer is associated.

[0194] For example, layers associated with a first panel / TRP / TCI / SRI / SRS resource set are mapped to a first layer group, and layers associated with a second panel / TRP / TCI / SRI / SRS resource set are mapped to a second layer group.

[0195] Alternatively, the first panel may correspond to a panel with a lower panel ID (lower panel ID), and the second panel may correspond to a panel with a higher panel ID (higher panel ID). Alternatively, the first panel may correspond to a panel with a higher panel ID, and the second panel may correspond to a panel with a lower panel ID.

[0196] It is also possible that the first SRI corresponds to the first SRI field (or is indicated by the first SRI field), and the second SRI corresponds to the second SRI field (or is indicated by the second SRI field).

[0197] The first SRS resource set corresponds to an SRS resource set with a lower ID, and the second SRS resource set corresponds to an SRS resource set with a higher ID. Alternatively, the first SRS resource set may correspond to an SRS resource set with a higher ID, and the second SRS resource set may correspond to an SRS resource set with a lower ID.

[0198] <Second Embodiment>

[0199] The second embodiment describes an example of determining the TB size when 1TB / CW is transmitted in PUSCH and different layers / layer groups of PUSCH are transmitted using different MCSs. In the following description, UL transmission of more than 4 layers (e.g., 8Tx with more than 4 layers) or simultaneous multi-panel transmission of SDM scheme (e.g., STxMP SDM scheme) is used as an example, but the applicable structure is not limited to this.

[0200] When 1 TB / CW is sent in PUSCH and different layers / layer groups of PUSCH are sent with different MCS, the TB size (or a specific parameter in determining the TB size (e.g., N info )) can also be derived based on at least one of the following options 2-1~option 2-2.

[0201] [Option 2-1]

[0202] N info Can also be used as N for all layers / layer groups (or across all layers / layer groups) info_i The total is calculated (or computed / derived). info_i It can also be calculated based on the MCS and the number of layers (or layer numbers) of the i-th layer / layer group. info It can also be calculated based on the following formula (9).

[0203] [Formula 1]

[0204] Formula (9)

[0205]

[0206] N is equivalent to the number of layers / layer groups. For each layer / layer group, its own MCS may also be indicated. N may also be predefined by the specification. For example, N=2 or other values. Alternatively, N may also be set / indicated to the UE from the base station via RRC / MAC CE / DCI.

[0207] R(i) corresponds to a target coding rate (eg, target code rate) for the i-th layer / layer group, and may be determined / derived from an MCS indicated for (or corresponding to) the i-th layer / layer group.

[0208] Q m（i） The modulation order (eg, modulation order) corresponding to the i-th layer / layer group may also be determined / derived from the MCS indicated for (or corresponding to) the i-th layer / layer group.

[0209] N RE It may also be equal to the total number of REs allocated to PUSCH (eg, the same N as in the existing system). RE ). Or, N RE It can also be replaced by N, which indicates the number of REs in the i-th layer / layer group. RE（i） .

[0210] In the TBS decision, N info The same method as the steps supported in the existing system (e.g., Rel. 16) can also be applied to other steps other than the calculation step (e.g., steps 1, 3, and 4 other than step 2). For example, step 2 supported in the existing system (e.g., Rel. 16) can be replaced with the method shown in the above option 2-1, and the other steps (e.g., steps 1, 3, and 4) can be performed in the same manner as the existing system.

[0211] [Option 2-2]

[0212] Alternatively, one MCS may be selected from the MCSs across all layers / layergroups (eg, MCS across all the layers / layergroups), and the TB size (TBS) may be calculated (or computed / derived) based on the selected MCS.

[0213] At least one of the following options 2-2-1 to 2-2-3 may be applied, and one MCS may be selected from a plurality of MCSs across all layers / layer groups.

[0214] 《Option 2-2-1》

[0215] You can also select the MCS corresponding to the first, second, or last layer / layer group.

[0216] 《Option 2-2-2》

[0217] It is also possible to select an MCS associated with a specific panel / TRP / TCI / SRI / SRS resource set.

[0218] For example, the MCS associated with the first panel / TRP / TCI / SRI / SRS resource set may also be selected. Alternatively, the MCS associated with the second panel / TRP / TCI / SRI / SRS resource set may also be selected.

[0219] Alternatively, the first panel corresponds to a panel with a lower panel ID (lower panel ID), and the second panel corresponds to a panel with a higher panel ID (higher panel ID). Alternatively, the first panel corresponds to a panel with a higher panel ID, and the second panel corresponds to a panel with a lower panel ID.

[0220] Alternatively, the first SRI corresponds to the first SRI field (or is indicated by the first SRI field), and the second SRI corresponds to the second SRI field (or is indicated by the second SRI field).

[0221] Alternatively, the first SRS resource set corresponds to an SRS resource set with a lower ID, and the second SRS resource set corresponds to an SRS resource set with a higher ID. Alternatively, the first SRS resource set corresponds to an SRS resource set with a higher ID, and the second SRS resource set corresponds to an SRS resource set with a lower ID.

[0222] 《Option 2-2-3》

[0223] The selected MCS may also be determined based on the index of the MCS. For example, the MCS with the smallest index (or the MCS with the smallest index) may be selected. Alternatively, the MCS with the largest index (or the MCS with the largest index) may be selected.

[0224] N info It can also be calculated (or computed / derived) based on the selected MCS. For example, N info It can also be calculated based on the following formula (10).

[0225] Formula (10)

[0226]

[0227] R corresponds to a target coding rate (eg, target code rate) determined by the selected MCS.

[0228] Q m This corresponds to the modulation order (for example, modulation order) determined by the selected MCS.

[0229] υ corresponds to the total number of PUSCH layers.

[0230] N RE Equivalent to the total number of REs allocated to PUSCH.

[0231] In the TBS decision, N info The same method as the steps supported in the existing system (e.g., Rel. 16) may be applied to other steps other than the calculated step (e.g., steps 1, 3, and 4 other than step 2). For example, step 2 supported in the existing system (e.g., Rel. 16) may be replaced with the method shown in option 2-2 above, and the other steps (e.g., steps 1, 3, and 4) may be performed in the same manner as in the existing system.

[0232] <Third Embodiment>

[0233] The third embodiment relates to mapping (or association) of CWs and layers in the case where UL transmission of more than 4 layers (eg, 8 layers) is supported.

[0234] In the existing system (before Rel.17), a maximum of 4 layers of CW-layer mapping (for example, CW-layer mapping) for 1 CW are supported (refer to Figure 7 ).

[0235] In this embodiment, a mapping of CW layers for 1 CW is defined with a maximum number of layers greater than 4 (eg, a maximum of 8 layers) (see Figure 8 ). Figure 8 An example of mapping of the CW-layer for 1 CW in layers 5-8 is shown.

[0236] The mapping of CW-layers for 1 CW supporting a maximum of 8 layers may also be defined by the same principle / mechanism as the mapping of CW-layers for 1 CW supporting a maximum of 4 layers.

[0237] For example, the complex-valued modulation symbols d for codeword q （q） (0),…,d （q） (M （q） symb -1) can also be mapped to layer x(i) = [x （0） (i) …x （υ-1） (i)] T Here, i=0, 1, ..., M layer symb -1,υ is the number of layers, M layer symb Equivalent to the number of modulation symbols per layer (e.g., modulation symbols).

[0238] In this way, by defining CW-layer mapping for 1 CW in the case of more than 4 layers, PUSCH transmission (1 CW) using more than 4 layers can be appropriately controlled.

[0239] <Supplement>

[0240] At least one of the above embodiments may also be applied only to a UE that reports a specific UE capability or supports the specific UE capability.

[0241] The specific UE capability may also indicate at least one of the following:

[0242] Supporting specific processing / operation / control / information for at least one of the above embodiments.

[0243] Support 8Tx PUSCH, or

[0244] Support for 8Tx PUSCH utilizing more than 4 layers, up to 8 layers, or up to 6 layers, or

[0245] Supports 1CW, more than 4 layers (or up to 8 layers or up to 6 layers), 8Tx PUSCH per MCS of layers / layer groups, or

[0246] Support STxMP SDM mode, or

[0247] Supports the STxMP SDM method based on 1CW with MCS for each CW.

[0248] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across all frequencies (commonly regardless of frequency), capabilities for each frequency (e.g., cell, frequency band, BWP), capabilities for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), and capabilities for each subcarrier spacing (SubCarrier Spacing (SCS)).

[0249] Furthermore, the specific UE capability may be a capability applied across all duplex modes (commonly regardless of the duplex mode) or a capability for each duplex mode (eg, time division duplex (TDD) or frequency division duplex (FDD)).

[0250] Furthermore, at least one of the above-described embodiments may also be applied to at least one of the following PUSCH transmissions.

[0251] Simultaneous multi-panel UL transmission below 4 layers,

[0252] UL transmission above 4 layers and below 8 layers,

[0253] Single-sided UL transmission with less than 4 layers.

[0254] In addition, at least one of the above-mentioned implementation modes may also be applied when the UE sets / activates / trigger specific information associated with the above-mentioned implementation modes (or implements the operations of the above-mentioned implementation modes) through high-layer signaling / physical layer signaling.

[0255] The UE may also apply operations such as Rel.15 / 16 without supporting at least one of the above-mentioned specific UE capabilities or without being set with the above-mentioned specific information.

[0256] (Note)

[0257] The following inventions are added to one embodiment of the present disclosure.

[0258] [Note 1]

[0259] A terminal having:

[0260] a receiving unit that receives information on at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers and an MCS corresponding to a plurality of layer groups, respectively, used in transmission of a physical uplink shared channel (PUSCH); and

[0261] The control unit controls PUSCH transmission of at least one of each layer and each layer group based on the mapping relationship between the multiple layers and the multiple layer groups.

[0262] [Note 2]

[0263] A terminal as described in Appendix 1, wherein:

[0264] The receiving unit receives information related to a mapping relationship between the plurality of layers and the plurality of layer groups.

[0265] [Note 3]

[0266] A terminal as described in Supplement 1 or Supplement 2, wherein:

[0267] The control unit determines a parameter used in determining a transport block size or a transport block size based on a target coding rate and a modulation order determined by a plurality of MCSs corresponding to a plurality of layers or a plurality of MCSs corresponding to a plurality of layer groups.

[0268] [Note 4]

[0269] A terminal as described in any one of Notes 1 to 3, wherein:

[0270] The control unit determines the parameters used in determining the transport block size, or the transport block size, based on the target coding rate and the number of modulations determined by selecting a specific MCS from a plurality of MCSs corresponding to a plurality of layers or a plurality of MCSs corresponding to a plurality of layer groups.

[0271] (Wireless Communication System)

[0272] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0273] Fig. 9 The figure shows an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 (which may also be simply referred to as the system 1) may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0274] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0275] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0276] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0277] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0278] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0279] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0280] 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.

[0281] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0282] The base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0283] The core network 30 may also include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), Operation, Administration and Maintenance (Management) (OAM), etc. In addition, multiple functions may be provided by one network node. In addition, communication with an external network (e.g., the Internet) may also be performed via a DN.

[0284] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0285] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), 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), etc. may be used.

[0286] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0287] As downlink channels, the wireless communication system 1 may use 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.

[0288] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. can also be used in the wireless communication system 1.

[0289] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, Master Information Block (MIB) can also be transmitted through PBCH.

[0290] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0291] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0292] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0293] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be rewritten mutually.

[0294] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0295] In the present disclosure, downlink, uplink, etc. may be expressed without “link.” In addition, various channels may be expressed without “Physical” at the beginning.

[0296] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0297] 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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0298] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may also be transmitted. In addition, DMRS may also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0299] (Base Station)

[0300] Fig.10 1 is a diagram showing an example of a structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0301] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0302] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0303] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0304] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0305] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0306] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0307] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0308] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0309] The sending and receiving unit 120 (sending processing unit 1211) may also perform processing on the Packet Data Convergence Protocol (PDCP) layer, processing on the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing on the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc., for data and control information obtained from the control unit 110, to generate a bit string to be sent.

[0310] The transmitting and receiving unit 120 (transmitting processing unit 1211) may also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be transmitted, and output a baseband signal.

[0311] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0312] On the other hand, the transmission and reception unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmission and reception antenna 130 .

[0313] The transmitting and receiving unit 120 (receiving processing unit 1212) may also apply receiving processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing (filtering processing), demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0314] The transmitting and receiving unit 120 (the measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also 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 also be output to the control unit 110.

[0315] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30 (for example, a network node providing NF), other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0316] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0317] The transmitting and receiving unit 120 may transmit information on at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers and MCS corresponding to a plurality of layer groups, which are used in transmission of a Physical Uplink Shared Channel (PUSCH).

[0318] The control unit 110 may also perform control to indicate a mapping relationship between a plurality of layers and a plurality of layer groups.

[0319] (User terminal)

[0320] Fig.11The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided in one or more pieces.

[0321] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0322] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0323] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0324] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0325] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0326] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0327] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0328] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0329] The sending and receiving unit 220 (sending processing unit 2211) may also perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0330] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0331] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform the above-mentioned transmission processing without performing DFT processing.

[0332] The transmitting and receiving unit 220 (RF unit 222 ) may perform modulation, filter processing (filtering processing), amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0333] On the other hand, the transmission and reception unit 220 (RF unit 222 ) may perform amplification, filter processing (filter processing), demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmission and reception antenna 230 .

[0334] The sending and receiving unit 220 (receiving processing unit 2212) can also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing (filtering processing), demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0335] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurement, CSI measurement, etc. based on the received signal. The measuring unit 223 may also measure the received power (e.g., RSRP), the received quality (e.g., RSRQ, SINR, SNR), the signal strength (e.g., RSSI), the propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0336] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0337] The transmitting and receiving unit 220 may also receive information related to at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers and an MCS corresponding to a plurality of layer groups, respectively, used in the transmission of the uplink shared channel (Physical Uplink Shared Channel (PUSCH)). The transmitting and receiving unit 220 may also receive information related to a mapping relationship between a plurality of layers and a plurality of layer groups.

[0338] The control unit 210 may also control PUSCH transmission of at least one of each layer and each layer group based on the mapping relationship between multiple layers and multiple layer groups.

[0339] The control unit 210 may determine the parameter / transport block size used in determining the transport block size based on the target coding rate and the number of modulations determined by the multiple MCSs corresponding to the multiple layers or the multiple MCSs corresponding to the multiple layer groups.

[0340] The control unit 210 may also determine the parameters used in determining the transport block size, or the transport block size, based on the target coding rate and the number of modulations determined by selecting a specific MCS from a plurality of MCSs corresponding to a plurality of layers or a plurality of MCSs corresponding to a plurality of layer groups.

[0341] (Hardware structure)

[0342] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, by wired, wireless, etc.) and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0343] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method thereof is not particularly limited.

[0344] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.12 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0345] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, and unit can be interchanged. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0346] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0347] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0348] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the control unit 110 (210), the transmission and reception unit 120 (220), etc. described above may also be implemented by the processor 1001.

[0349] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the other functional blocks can also be implemented in the same way.

[0350] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0351] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0352] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0353] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that performs output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0354] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0355] In addition, the base station 10 and the user terminal 20 may also 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), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0356] (Variation)

[0357] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may be rewritten one another. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0358] A radio frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0359] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filter processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0360] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0361] A time slot may also contain multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of a smaller number of symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0362] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be replaced with each other.

[0363] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0364] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0365] TTI can also be a transmission time unit for a data packet (transport block), code block, code word, etc. that has been channel-coded, and can also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (for example, the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can also be shorter than the TTI.

[0366] In addition, when a time slot or a mini time slot is called a TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling may also be controlled.

[0367] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0368] In addition, a long TTI (eg, normal TTI, subframe, etc.) may be rewritten as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI, etc.) may be rewritten as a TTI having a TTI length shorter than that of a long TTI and longer than 1 ms.

[0369] Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and may also include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0370] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0371] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0372] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0373] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) can also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs can also be identified by the index of the RB based on the common reference point of the carrier. PRBs can also be defined in a BWP and numbered within the BWP.

[0374] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0375] At least one of the set BWPs may be activated, and the UE may not assume that a specific signal / channel is transmitted or received outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0376] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots per subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0377] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0378] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0379] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0380] In addition, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0381] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or added. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0382] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0383] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0384] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0385] The determination may be made using a value represented by one bit (0 or 1), a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(eg, comparison with a specific value).

[0386] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software module, application, software application, software package, routine, sub-routine, object, executable files, execution thread, procedure, function, etc.

[0387] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when the software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0388] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0389] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmit power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0390] In the present disclosure, terms such as "base station (BS)", "wireless 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", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro cell, and pico cell.

[0391] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0392] In the present disclosure, the base station sending information to the terminal may also be rewritten as the base station instructing the terminal to control / operate based on the information.

[0393] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0394] 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, hand set, user agent, mobile client, client or several other appropriate terms.

[0395] At least one of the base station and the mobile station may also be referred to as a transmission device, a reception device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, a moving object body, etc.

[0396] The mobile body refers to a movable object, and the moving speed is arbitrary, and of course it also includes the situation where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, automatic two-wheeled vehicles (motorcycles), bicycles, connected cars, loading shovels, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trolleys, rickshaws, ships (ships and other watercrafts), airplanes, rockets, artificial satellites, drones, multi-rotor aircraft, quadcopters, balloons and objects carried on them, and are not limited to these. In addition, the mobile body can also be a mobile body that drives autonomously based on operating instructions.

[0397] The mobile object may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile object that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station may include a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0398] Fig.131 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, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed 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.

[0399] The driving unit 41 is composed of at least one of an engine, a motor, or a combination of an engine and a motor. The steering unit 42 is composed of at least a steering wheel (also called a handlebar), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0400] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an ECU (Electronic Control Unit).

[0401] The signals from the various sensors 50-58 include a current signal from a current sensor 50 for sensing the current of the motor, a speed signal of the front wheels 46 / rear wheels 47 obtained by a speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by other sensors 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, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0402] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, 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 obtained from an external device via the communication module 60 and the like to provide various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0403] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0404] The driving assistance system unit 64 is composed of various devices for providing functions for preventing accidents or reducing the driving load of the driver, such as millimeter wave radar, light detection and ranging (LiDAR), camera, positioning locator (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., high-precision (High Definition (HD))) map, autonomous vehicle (Autonomous Vehicle (AV)) map, etc.), gyroscope system (e.g., inertial measurement unit (Inertial Measurement Unit (IMU)), inertial navigation unit (Inertial Navigation System (INS)), etc.), artificial intelligence (Artificial Intelligence (AI)) chip, AI processor, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 sends and receives various information via the communication module 60 and realizes the driving assistance function or the autonomous driving function.

[0405] The communication module 60 can communicate with the microprocessor 61 and the components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 provided in the vehicle 40 via the communication port 63.

[0406] The communication module 60 can be controlled by the microprocessor 61 of the electronic control unit 49, and is a communication device that can communicate with an external device. For example, various information is sent and received with the external device via wireless communication. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it can also function as at least one of the base station 10 and user terminal 20).

[0407] The communication module 60 may also transmit at least one of the signals from the 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 also be referred to as an input unit that receives input. For example, the PUSCH transmitted through the communication module 60 may also include information based on the above input.

[0408] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device, and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 may also be referred to as an output unit for outputting information (for example, outputting information to a display, a speaker, etc. based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0409] In addition, the communication module 60 stores various information received from the external device in the memory 62 that can be used by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, and various sensors 50-58 of the vehicle 40 based on the information stored in the memory 62.

[0410] In addition, the base station in the present disclosure may also be rewritten as a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be rewritten as terms corresponding to inter-terminal communication (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may also be rewritten as sidelink channels.

[0411] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0412] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, consider the Mobility Management Entity (MME)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0413] The various methods / implementations described in this disclosure may be used alone or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, timings, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the method described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0414] The various modes / implementations described in the present disclosure may be applied to 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 a decimal)), 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 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on these enhancements, revisions, productions, or regulations. In addition, multiple systems may be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0415] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0416] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0417] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0418] In addition, “judgment (decision)” may also refer to situations where receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), accessing (e.g., accessing data in a memory), etc. are regarded as making a “judgment (decision)”.

[0419] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as "judgment (decision)". That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as "judgment (decision)".

[0420] In addition, "judge (decide)" can also be rewritten as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0421] The “maximum transmit power” described in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated maximum transmit power).

[0422] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be rewritten as "access".

[0423] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as being "connected" or "combined" to each other using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0424] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same manner as "different".

[0425] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0426] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0427] In the present disclosure, "below", "less than", "above", "more than", "equal to", etc. can also be rephrased with each other. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rephrased with each other, without being limited to the original degree, comparative degree, and superlative degree. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rephrased with each other as expressions with "ith" attached, without being limited to the original degree, comparative degree, and superlative degree (for example, "highest" can also be rephrased with "i-th highest").

[0428] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may also be replaced by each other.

[0429] The invention involved in the present disclosure is described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

[0430] This application is based on Japanese Patent Application No. 2022-133893 filed on August 25, 2022, the contents of which are incorporated herein in their entirety.

Claims

1. A terminal having: a receiving unit that receives information on at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers and an MCS corresponding to a plurality of layer groups, respectively, used in transmission of a physical uplink shared channel (PUSCH); and The control unit controls PUSCH transmission of at least one of each layer and each layer group based on the mapping relationship between the multiple layers and the multiple layer groups.

2. The terminal according to claim 1, wherein: The receiving unit receives information related to a mapping relationship between the plurality of layers and the plurality of layer groups.

3. The terminal according to claim 1, wherein: The control unit determines a parameter used in determining a transport block size or a transport block size based on a target coding rate and a modulation order determined by a plurality of MCSs corresponding to a plurality of layers or a plurality of MCSs corresponding to a plurality of layer groups.

4. The terminal according to claim 1, wherein: The control unit determines the parameters used in determining the transport block size, or the transport block size, based on the target coding rate and the number of modulations determined by selecting a specific MCS from a plurality of MCSs corresponding to a plurality of layers or a plurality of MCSs corresponding to a plurality of layer groups.

5. A wireless communication method, which is a wireless communication method of a terminal, comprising: A step of receiving information on at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers, respectively, and MCS corresponding to a plurality of layer groups, respectively, used in transmission of a physical uplink shared channel (PUSCH); and A step of controlling PUSCH transmission of at least one of each layer and each layer group based on a mapping relationship between multiple layers and multiple layer groups.

6. A base station, comprising: a transmitting unit that transmits information on at least one of a plurality of modulation and coding schemes (MCS) corresponding to a plurality of layers, respectively, and MCS corresponding to a plurality of layer groups, respectively, used in transmission of a physical uplink shared channel (PUSCH); and A control unit performs control to indicate a mapping relationship between a plurality of layers and a plurality of layer groups.

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