Terminals, wireless communication methods, base stations and systems

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives information relating to a plurality of modulation and coding schemes (MCSs) respectively corresponding to a plurality of layers and / or MCSs respectively corresponding to a plurality of layer groups, the plurality of layers and the plurality of layer groups being utilized for transmission of a physical uplink shared channel (PUSCH); and a control unit that, on the basis of a mapping relationship between the plurality of layers and the plurality of layer groups, controls PUSCH transmission of the respective layers and / or the respective layer groups.

Description

Terminal, wireless communication method and base station

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

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

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

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

[0005] For future wireless communication systems (e.g., Rel. 18 NR), it is being considered that a user terminal (User Equipment (UE)) will transmit one or more code words (CWs) / transport blocks (TBs) using more than four layers on an uplink shared channel (Physical Uplink Shared Channel (PUSCH)). Alternatively, it is being considered that simultaneous UL transmission using multiple panels will be performed.

[0006] However, the details of this operation have not been fully studied. For example, how to apply / map a 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 risk that throughput will decrease or communication quality will deteriorate.

[0007] 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 of PUSCH and the like.

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives information regarding at least one of a plurality of Modulation and Coding Schemes (MCSs) corresponding to a plurality of layers, respectively, and an MCS corresponding to a plurality of layer groups, which are used for transmitting an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and a control unit that controls 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.

[0009] According to one aspect of the present disclosure, UL transmission of PUSCH and the like can be performed appropriately.

[0010] FIGS. 1A and 1B are diagrams illustrating an example of UL transmission in a single panel. FIGS. 2A to 2C are diagrams illustrating examples of methods 1 to 3 of simultaneous UL transmission using multiple panels. FIG. 3 is a diagram illustrating an example of PUSCH repeat transmission employing TDM. FIGS. 4A to 4D are diagrams illustrating variations of PUSCH repeat transmission. FIGS. 5A to 5C are diagrams illustrating other variations of PUSCH repeat transmission. FIGS. 6A to 6D are diagrams illustrating an example of the correspondence between layer groups and layers for each number of layers. FIG. 7 is a diagram illustrating an example of CW-to-layer mapping for one CW up to four layers. FIG. 8 is a diagram illustrating an example of CW-to-layer mapping for one CW up to eight layers (e.g., layers 5 to 8). FIG. 9 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 10 is a diagram illustrating an example of the configuration of a base station according to an embodiment. FIG. 11 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. FIG. 12 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 13 is a diagram illustrating an example of a vehicle according to an embodiment.

[0011] (Spatial Relationship for SRS, PUSCH) The UE may receive information (SRS configuration information, e.g., parameters in the RRC control element "SRS-Config") used for transmitting measurement reference signals (e.g., Sounding Reference Signals (SRS)).

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

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

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

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

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

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

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

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

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

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

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

[0023] In NR, the transmission of uplink signals may be controlled based on the presence or absence of beam correspondence (BC). BC may be, for example, the ability of a node (e.g., a base station or a UE) to determine the beam to be used for transmitting a signal (transmit beam, Tx beam) based on the beam to be used for receiving the signal (receive beam, Rx beam).

[0024] BC may also be referred to as transmit / receive beam correspondence (Tx / Rx beam correspondence), beam reciprocity, beam calibration, calibrated / non-calibrated, reciprocity calibrated / non-calibrated, correspondence, agreement, etc.

[0025] For example, in the absence of BC, the UE may transmit an uplink signal (e.g., PUSCH, PUCCH, SRS, etc.) using the same beam (spatial domain transmit filter) as the SRS (or SRS resource) instructed by the base station based on the measurement results of one or more SRSs (or SRS resources).

[0026] On the other hand, when BC is present, the UE may transmit an uplink signal (e.g., a PUSCH, a PUCCH, an SRS, etc.) using a beam (spatial domain transmit filter) that is the same as or corresponds to the beam (spatial domain receive filter) used to receive a specified SSB or CSI-RS (or CSI-RS resource).

[0027] When the UE is configured with spatial relationship information regarding the SRS and an SSB or CSI-RS for a certain SRS resource (e.g., with BC), the UE may transmit the SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter for receiving the SSB or CSI-RS (spatial domain receive filter). In this case, the UE may assume that the UE receive beam for the SSB or CSI-RS and the UE transmit beam for the SRS are the same.

[0028] When the UE is configured with spatial relationship information between another SRS (reference SRS) and the target SRS for a certain SRS (target SRS) resource (e.g., without BC), the UE may transmit the target SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter for transmitting the reference SRS. That is, in this case, the UE may assume that the UE transmit beam for the reference SRS and the UE transmit beam for the target SRS are the same.

[0029] The UE may determine the spatial relationship of the PUSCH scheduled by the DCI (e.g., DCI format 0_1) based on the value of a predetermined field (e.g., an SRS resource identifier (SRI) field) in the DCI. Specifically, the UE may use spatial relationship information of the SRS resources (e.g., the RRC information element "spatialRelationInfo") determined based on the value of the predetermined field (e.g., the SRI) for PUSCH transmission.

[0030] When codebook-based transmission is used for PUSCH, two SRS resources may be configured for the UE by RRC, and one of the two SRS resources may be indicated by a DCI (a 1-bit predetermined field). When non-codebook-based transmission is used for PUSCH, four SRS resources may be configured for the UE by RRC, and one of the four SRS resources may be indicated by a DCI (a 2-bit predetermined field). To use a spatial relationship other than the two or four spatial relationships configured by RRC, an RRC reconfiguration is required.

[0031] In addition, the DL-RS can be configured for the spatial relationship of the SRS resources used for the PUSCH. For example, for SP-SRS, the UE can be configured by RRC with the spatial relationship of multiple (e.g., up to 16) SRS resources, and one of the multiple SRS resources can be indicated by MAC CE.

[0032] (UL TCI Status) In Rel. 16 NR, the use of the UL TCI status as a UL beam indication method is being considered. Notification of the UL TCI status is similar to notification of the UE's DL beam (DL TCI status). Note that the DL TCI status may be interchangeably read as the TCI status for PDCCH / PDSCH.

[0033] The channel / signal (which may be referred to as a target channel / RS) to which the UL TCI state is set (specified) may be, for example, at least one of a PUSCH (DMRS of PUSCH), a PUCCH (DMRS of PUCCH), a random access channel (Physical Random Access Channel (PRACH)), an SRS, etc.

[0034] Furthermore, the RS (source RS) that has a QCL relationship with the channel / signal may be, for example, a DL RS (e.g., SSB, CSI-RS, TRS, etc.) or a UL RS (e.g., SRS, SRS for beam management, etc.).

[0035] In the UL TCI state, an RS that has a QCL relationship with the channel / signal may be associated with a panel ID for receiving or transmitting the RS, which may be explicitly configured (or specified) or implicitly determined by higher layer signaling (e.g., RRC signaling, MAC CE, etc.).

[0036] 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, spatial relationship information, etc. of the RS.

[0037] The QCL type indicated by the UL TCI status may be an existing QCL type A-D, or may be another QCL type, and may include a predetermined spatial relationship, associated antenna ports (port index), etc.

[0038] When a UE is assigned an associated panel ID for an UL transmission (e.g., assigned by a DCI), the UE may perform the UL transmission using the panel corresponding to the panel ID. The panel ID may be associated with a UL TCI state, and when a UL TCI state is assigned (or activated) for a given UL channel / signal, the UE may identify the panel to use for the UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0039] (Single Panel Transmission) The single panel UL transmission scheme or a candidate single panel UL transmission scheme may employ at least one of the following transmission schemes A and B (single panel UL transmission schemes A and B). In the present disclosure, a panel / UE panel may be interpreted as a UE capability value set (e.g., a UE capability value set) reported for each UE capability. In the present disclosure, different panels, different spatial relationships, different joint TCI states, different TPC parameters, different antenna ports, etc. may be interpreted as interchangeable terms.

[0040] Transmission Scheme A: Single Panel Single TRP UL Transmission In Rel. 15 and Rel. 16, a transmission scheme is used in which a UE transmits UL for one TRP from only one beam and panel at a time (FIG. 1A).

[0041] [Transmission Scheme B: Single Panel Multi-TRP UL Transmission] Rel. 17 considers UL transmission from only one beam and panel at a time and repeated transmission for multiple TRPs (Fig. 1B). In the example of Fig. 1B, the UE transmits a PUSCH from panel #1 to TRP #1 (switching beams and panels), and then transmits a PUSCH from panel #2 to TRP #2. The two TRPs are connected via an ideal backhaul.

[0042] (Multi-panel transmission) In Rel. 18 and later, in order to improve UL throughput / reliability, support for simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) for one or more TRPs is being considered. Also, a multi-panel UL transmission scheme is being considered for a specific UL channel (e.g., PUSCH / PUCCH).

[0043] For example, up to X (e.g., X = 2) and up to Y (e.g., Y = 2) panels may be supported for multi-panel UL transmission. In multi-panel UL transmission, if UL precoding indication for PUSCH is supported, a codebook of a legacy system (e.g., pre-Rel. 16) may be supported for simultaneous multi-panel transmission. Considering single DCI and multi-DCI-based multi-TRP operation, the number of layers may be up to x (e.g., x = 4) across all panels, and the number of codewords (CWs) may be up to y (e.g., y = 2) across all panels.

[0044] At least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3) is being considered as a multi-panel UL transmission method or a candidate multi-panel UL transmission method. Only one of transmission methods 1 to 3 may be supported. Multiple methods including at least one of transmission methods 1 to 3 may be supported, and one of the multiple transmission methods may be configured in the UE.

[0045] Transmission Scheme 1: Coherent Multi-Panel UL Transmission Multiple panels may be synchronized with each other. All layers are mapped to all panels. Multiple analog beams are directed. The SRS Resource Indicator (SRI) field may be extended. This scheme may use up to four layers for the UL.

[0046] In the example of Figure 2A, the UE maps one codeword (CW) or one transport block (TB) to L layers (PUSCH (1, 2, ..., L)) and transmits the L layers from each of two panels. Panels #1 and #2 are coherent. Transmission scheme 1 can obtain diversity gain. The total number of layers in the two panels is 2L. If the maximum total number of layers is 4, the maximum number of layers in one panel is 2.

[0047] [Transmission Scheme 2: Non-coherent Multi-Panel UL Transmission of One Codeword (CW) or Transport Block (TB)] The multiple panels may not be synchronized. Different layers are mapped to different panels and one CW or TB for PUSCH from multiple panels. A layer corresponding to one CW or TB may be mapped to multiple panels. This transmission scheme may use up to four layers or up to eight layers for the UL. If up to eight layers are supported, this transmission scheme may support one CW or TB using up to eight layers.

[0048] In the example of FIG. 2B, the UE maps 1 CW or 1 TB to k layers (PUSCH(1, 2, ..., k)) and L-k layers (PUSCH(k+1, k+2, ..., L)), transmits k layers from panel #1, and transmits L-k layers from panel #2. Transmission scheme 2 can obtain gains through multiplexing and diversity. The total number of layers in the two panels is L.

[0049] [Transmission Scheme 3: Non-coherent Multi-Panel UL Transmission of Two CWs or TBs] The multiple panels may not be synchronized. Different layers are mapped to different panels and two CWs or TBs for PUSCH from multiple panels. A layer corresponding to one CW or TB may be mapped to one panel. Layers corresponding to multiple CWs or TBs may be mapped to different panels. This transmission scheme may use up to four layers or up to eight layers for the UL. If up to eight layers are supported, this transmission scheme may support up to four layers per CW or TB.

[0050] In the example of FIG. 2C , the UE maps CW#1 or TB#1 of the 2CWs or 2TBs to k layers (PUSCH (1, 2, ..., k)), maps CW#2 or TB#2 to L-k layers (PUSCH (k+1, k+2, ..., L)), and transmits k layers from panel #1 and L-k layers from panel #2. Transmission scheme 3 can obtain gains through multiplexing and diversity. The total number of layers in the two panels is L.

[0051] In each of the above transmission schemes, the base station may configure or indicate panel-specific transmission for UL transmission using UL TCI or panel ID. UL TCI (UL TCI state) may be based on signaling similar to DL beam indication supported in Rel. 15. The panel ID may be implicitly or explicitly applied to transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. When the panel ID is explicitly signaled, the panel ID may be configured in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource configuration or spatial relationship information).

[0052] In one or more of the transmission methods / modes described above, multi-panel UL transmission (e.g., Simultaneous Transmission across Multiple Panels (STxMP)) for scheduling a PUSCH based on one DCI (single DCI) / scheduling a PUSCH based on multiple DCIs (multiple DCIs) is being considered.

[0053] In STxMP, the following schemes may be applied: Single DCI (S-DCI) Space Division Multiplexing (SDM) scheme: Different layers / DMRS ports of one PUSCH are separately precoded and transmitted simultaneously from different UE beams / panels. S-DCI Frequency Division Multiplexing (FDM)-A scheme: Different parts of the frequency domain resources of one PUSCH transmission opportunity are transmitted from different UE beams / panels. S-DCI FDM-B scheme: Two PUSCH transmission opportunities of the same / different RV of the same TB are transmitted from different UE beams / panels on non-overlapping frequency domain resources and the same time domain resources. S-DCI SFN-based transmission scheme: The same PUSCH / DMRS is transmitted simultaneously from two different UE beams / panels. S-DCI spatial domain repetition scheme: Two PUSCH transmission opportunities with different redundancy versions (RV) of the same TB are transmitted from two different UE beams / panels on the same time and frequency resources. M-DCI scheme: Two overlapping (fully / partially overlapping in the time domain, fully / partially overlapping or non-overlapping in the frequency domain) PUSCHs are transmitted from two different UE beams / panels.

[0054] In the present disclosure, the terms "repeated transmission" and "transmission" may be interchangeable. Transmitting multiple TBs may mean transmitting the same TB multiple times or transmitting different TBs.

[0055] [Time Division Multiplexing (TDM)] The UE may assume that PUSCH repeat transmissions using Time Division Multiplexing (TDM) are scheduled on different time resources but the same frequency resources. Figure 3 shows an example of PUSCH repeat transmission using TDM. In Figure 3, PUSCH / PUCCH repeat #1 and repeat #2 use the same frequency resource but different time resources.

[0056] Frequency Division Multiplexing (FDM) The UE may assume that PUSCH / PUCCH repeat transmissions employing Frequency Division Multiplexing (FDM) are scheduled on the same time resources but different frequency resources, i.e., the UE may transmit PUSCH / PUCCH repeat transmissions employing FDM on the same time resources but different frequency resources when using coherent panels.

[0057] 4A is a diagram showing a first example of repeated transmission using FDM (FDM-A), in which one PUSCH / PUCCH repeated transmission is performed for one TB / UCI.

[0058] 4B is a diagram showing a second example of repeated transmission using FDM (FDM-B), in which PUSCH / PUCCH repeated transmission is performed twice per TB / UCI.

[0059] 4C is a diagram illustrating an example of repeated transmission using a single frequency network (SFN), in which one PUSCH / PUCCH is transmitted using a different beam / panel for one TB / UCI.

[0060] Space Division Multiplexing (SDM) The UE may assume that repeated PUSCH transmissions employing Space Division Multiplexing (SDM) are scheduled on the same time and frequency resources, i.e., the UE may transmit repeated PUSCH transmissions employing SDM on the same time and frequency resources when using coherent panels.

[0061] 4D is a diagram showing an example of repeated transmission using SDM, in which the time and frequency resources of PUSCH / PUCCH repetition #1 and repetition #2 are the same.

[0062] 5A is a diagram showing an example of repeated transmission using SDM in one CW, in which the time and frequency resources of layers #1-2 and #3-4 corresponding to the PUSCH / PUCCH are the same.

[0063] 5B is a diagram showing an example of repeated transmission using SDM in two CWs, in which CW#1 and CW#2 corresponding to PUSCH / PUCCH have the same time and frequency resources.

[0064] 5C illustrates an example in which the time and frequency resources of the PUSCH / PUCCH corresponding to each of a plurality of TBs overlap at least partially, where the time and frequency resources of the PUSCH / PUCCH #1 corresponding to the first TB / UCI and the PUSCH / PUCCH #2 corresponding to the second TB / UCI are the same.

[0065] (Transmission of More Than Four Antenna Ports) Rel. 15 / 16 NR supports uplink (UL) multi-input multi-output (MIMO) transmission with up to four layers. For future wireless communication systems, support for UL transmission with more than four layers is being considered to achieve higher spectral efficiency. For example, for Rel. 18 NR, maximum six-rank transmission using six antenna ports and maximum six- or eight-rank transmission using eight antenna ports are being considered.

[0066] For example, eight antennas may be arranged one-dimensionally (1D) or two-dimensionally (2D). In the former case, an antenna configuration having four cross-polarized antennas arranged horizontally may be considered, and in the latter case, an antenna configuration having two cross-polarized antennas arranged horizontally and two cross-polarized antennas arranged vertically may be considered.

[0067] The antenna layout is not limited to these. For example, the number of panels on which antennas are arranged, the orientation of the panels, the coherency of each panel / antenna (fully coherent, partially coherent, non-coherent, etc.), the antenna arrangement in a specific direction (horizontal, vertical, etc.), and the polarization antenna configuration (single polarization, cross polarization, number of polarization planes, etc.) may be arbitrarily set.

[0068] In addition, while Rel. 15 / 16 NR supported the transmission of one codeword (CW) in one PUSCH, for Rel. 18 NR, the UE is considering transmitting more than one CW in one PUSCH. For example, support for two CW transmissions for ranks 5-8 and two CW transmissions for ranks 2-8 is being considered.

[0069] In addition, while Rel. 15 and Rel. 16 UEs are expected to use only one beam / panel for UL transmission at a given time, in Rel. 17 and later, simultaneous UL transmission (e.g., PUSCH transmission) of multiple beams / panels for one or more TRPs is being considered to improve UL throughput and reliability. Note that simultaneous PUSCH transmission of multiple beams / panels may correspond to PUSCH transmission with more than four layers or PUSCH transmission with four or fewer layers.

[0070] Also, precoding matrices for UL transmission using more than four antenna ports (a number of antenna ports greater than four) are being considered, for example, a codebook for 8-port transmission (which may be called an 8 TX UL codebook, etc.).

[0071] (Transport Block Size) In Rel. 16 NR, a table (MCS table) that associates a modulation order, a coding rate (also referred to as an assumed coding rate, a target coding rate, etc.), and an index (e.g., an MCS index) indicating the modulation order and the coding rate may be defined (and may be stored in a UE). Note that the MCS table may also associate spectral efficiency in addition to the above three items.

[0072] The UE may receive DCI for scheduling the PUSCH (UL grant, at least one of DCI formats 0_x (x is, for example, 0, 1, 2, etc.)) and determine a modulation order (Qm) and a coding rate (R) for the PUSCH based on the MCS table and the MCS index included in the DCI. The DCI for scheduling may be referred to as a scheduling DCI.

[0073] In Rel. 16 NR, the UE may determine the TBS for the PUSCH using at least one of the following steps 1) to 4).

[0074] Step 1) The UE determines the number of REs in a slot (N ＲＥ ) to be determined.

[0075] Specifically, the UE determines the number of REs (N') allocated to the PUSCH in one PRB. ＲＥ For example, the UE may determine the number of REs (N') allocated to the PUSCH in one PRB based on at least one parameter shown in the following equation (1): ＲＥ ) may be determined by the formula (1). ＲＥ = N ＲＢ ＳＣ ・N ｓｈ ｓｙｍｂ -N ＰＲＢ ＤＭＲＳ -N ＰＲＢ ｏｈ

[0076] Here, N ＲＢ ＳＣ is the number of subcarriers per RB, for example, N ＲＢＳＣ N may be 12. ｓｈ ｓｙｍｂ is the number of symbols (eg, OFDM symbols) scheduled in a slot.

[0077] N ＰＲＢ ＤＭＲＳ is the number of REs for DMRS per PRB in the scheduled period, which may include group overhead for Code Division Multiplexing (CDM) of the DMRS indicated by the scheduling DCI.

[0078] N ＰＲＢ ｏｈ may be a value configured by a higher layer parameter. For example, N ＰＲＢ ｏｈ is the overhead indicated by the higher layer parameter (Xoh-PUSCH), and may be any value of 0, 6, 12, or 18. If Xoh-PUSCH is not configured (notified) to the UE, Xoh-PUSCH may be set to 0. Also, in message 3 (msg3) in the random access procedure, Xoh-PUSCH is set to 0.

[0079] In addition, the UE determines the total number of REs allocated to the PUSCH (N ＲＥ The UE may determine the number of REs (N') allocated to the PUSCH in one PRB. ＲＥ ) and the total number of PRBs allocated to the UE (n ＰＲＢ ), the total number of REs allocated to the PUSCH (N ＲＥ ) may be determined (for example, using the following formula (2)). Formula (2) N ＲＥ =min(156,N' ＲＥ )・n ＰＲＢ

[0080] The UE determines the number of REs (N') allocated to the PUSCH in one PRB. ＲＥ ) is quantized according to a predetermined rule, and the quantized number of REs and the total number of PRBs allocated to the UE (n ＰＲＢ) and the total number of REs allocated to the PUSCH (N ＲＥ ) may be determined.

[0081] Step 2) The UE determines the intermediate number of information bits (N ｉｎｆｏ Specifically, the UE determines the intermediate number (N ｉｎｆｏ ) may be determined. ｉｎｆｏ ) is a temporary TBS (TBS ｔｅｍｐ ) etc. Formula (3) N ｉｎｆｏ = N ＲＥ ・R・Q ｍ ・υ

[0082] Here, N ＲＥ Q is the total number of REs allocated to the PUSCH. R is the coding rate associated with the MCS index included in the DCI in the MCS table. ｍ is the modulation order associated with the MCS index included in the DCI in the MCS table, and ν is the number of layers of the PUSCH.

[0083] Step 3) The intermediate number of information bits (N) determined in step 2) ｉｎｆｏ If N' is less than or equal to a predetermined threshold (e.g., 3824), the UE quantizes the intermediate number and sets the quantized intermediate number (N' ｉｎｆｏ The UE may determine the quantized intermediate number (N′) using, for example, equation (4). ｉｎｆｏ ) may be calculated using the formula (4). ｉｎｆｏ =max(24,2 ｎ ・floor (N ｉｎｆｏ / 2) where n = max(3,floor(log ２ (N ｉｎｆｏ ))

[0084] Furthermore, the UE uses a predetermined table (for example, a table associating TBSs with indexes (also called a quantization table or TBS table)) to calculate a quantized intermediate number (N' ｉｎｆｏ) nearest TBS.

[0085] Step 4) Meanwhile, the intermediate number of information bits (N ｉｎｆｏ ) is greater than (or equal to or greater than) a predetermined threshold (e.g., 3824), the UE ｉｎｆｏ ) and quantize the quantized intermediate number (N' ｉｎｆｏ The UE may determine the quantized intermediate number (N′) using, for example, equation (5). ｉｎｆｏ ) may be calculated. The round function may be rounded up. ｉｎｆｏ =max(3840,2 ｎ ×round((N ｉｎｆｏ -24) / 2 ｎ )) where n = floor(log ２ (N ｉｎｆｏ -24))-5

[0086] Here, if the coding rate (R) associated with the MCS index in the DCI in the MCS table is equal to or less than a predetermined threshold (e.g., 1 / 4), the UE may determine the TBS based on (e.g., using) at least one parameter shown in the following equation (6): TBS=8·C·ceil((N' ｉｎｆｏ +24) / (8·C))-24 where C=ceil((N' ｉｎｆｏ +24) / 3816)

[0087] N' ｉｎｆｏ is a quantized intermediate number, which may be calculated using, for example, the above formula (5). Also, C may be the number of code blocks (CBs) into which the TB is divided.

[0088] On the other hand, if the coding rate (R) is greater than (or equal to or greater than) a predetermined threshold (for example, 1 / 4) and the quantized intermediate number of information bits (N' ｉｎｆｏIf N' is greater than (or equal to or greater than) a predetermined threshold (e.g., 8424), the UE may determine the TBS based on (e.g., using) at least one parameter shown in Equation (7) below: TBS = 8 C ceil((N') ｉｎｆｏ +24) / (8·C))-24 where C=ceil((N' ｉｎｆｏ +24) / 8424)

[0089] Furthermore, when the coding rate (R) is equal to or less than a predetermined threshold (e.g., ¼) and the quantized intermediate number (N′ info) is equal to or less than a predetermined threshold (e.g., 8424), the UE may determine the TBS based on at least one parameter shown in the following equation (8) (e.g., by using equation (8)): TBS=8·ceil((N′ info) ｉｎｆｏ +24) / 8)-24

[0090] Thus, in Rel. 16 NR, the UE determines the number of REs available for PUSCH in a slot (N ＲＥ ), the coding rate (R), the modulation order (Qm), and the number of layers, and the intermediate number of information bits (N ｉｎｆｏ ) and determine the intermediate number (N ｉｎｆｏ ) determines the TBS for the PUSCH based on the quantized intermediate number (N′ info ).

[0091] Incidentally, in the above-mentioned UL transmission with more than four antenna ports (e.g., 8Tx), it is assumed that a different MCS is required (or applied) for each layer / layer group. Also, in simultaneous multi-panel transmission (STxMP (e.g., SDM method)), it is assumed that a different MCS is required (or applied) for each panel / TRP.

[0092] The following cases 1 and 2 are considered to support MCS for each layer / layer group / panel / TRP. Case 1: 2 TB / CW are transmitted on PUSCH, and MCS is indicated for each TB / CW. Case 2: 1 TB / CW is transmitted on PUSCH, and MCS is indicated for each layer / layer group (or panel / TRP) of 1 TB / CW.

[0093] However, when the MCS is specified for each 1TB / CW layer / layer group (or panel / TRP) as in Case 2, the problem arises as to how to control the mapping of layers and layer groups (or the association of layers and layer groups). Alternatively, the problem arises as to how to control the mapping of layers and panels / TRPs (or the association of layers and panels / TRPs).

[0094] Furthermore, when the MCS is specified for each layer / layer group (or panel / TRP) of 1 TB / CW as in Case 2, the question arises as to how to control the TB size of UL transmission (e.g., PUSCH transmission).

[0095] Therefore, the inventors of the present invention focused on the case where the MCS is specified for each 1TB / CW layer / layer group (or panel / TRP) (for example, case 2 above) and came up with a method for appropriately transmitting PUSH.

[0096] Hereinafter, embodiments according to the present disclosure will be described in detail. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0097] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0098] In the present disclosure, terms such as activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0099] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0100] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0101] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0102] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0103] In the present disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In the present disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0104] In the present disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0105] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and the TCI may be interchangeable with each other.

[0106] (Wireless communication method) A UE may receive, via RRC / MAC CE / DCI, information on layers / layer groups used for PUSCH transmission, information on mapping (or association) between layers and layer groups, and information on at least one MCS corresponding to each layer / layer group. The UE may 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.

[0107] The following embodiment can be suitably applied to 1CW PUSCH transmission (e.g., 8Tx PUSCH) / simultaneous multi-panel transmission (STxMP PUSCH SDM method) using MCS for each layer / layer group. Of course, the configuration to which the present embodiment can be applied is not limited to this.

[0108] In the following description, 8Tx PUSCH may be interpreted as a PUSCH that uses more than four antenna ports.

[0109] First Embodiment The first embodiment relates to mapping between layers and layer groups (or association between layers and layer groups) when an MCS is indicated for each layer group of a PUSCH. The term "instruction" may be read as "setting" or "applying."

[0110] When PUSCH transmission is performed using multiple layers, layer groups may be configured / applied / supported. Each layer group may include one or more layers. An MCS may be specified for each layer group. The UE may control PUSCH transmission by applying an MCS separately to each PUSCH layer group.

[0111] [8Tx PUSCH] As a mapping between layers and layer groups, at least one of the following options 1-1 to 1-2 may be applied.

[0112] <<Option 1-1>> The mapping (or association) between layers and layer groups may be defined in advance in a specification or the like.

[0113] The number of layer groups and the number of layers in each layer group may be predefined, for example, layers #0 to #X may be defined as a first layer group, layers #X+1 to #Y may be defined as a second layer group, etc.

[0114] 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, i.e., a different mapping may be defined for each total number of PUSCH layers.

[0115] For example, for an 8-layer PUSCH, layers #0 to #3 may correspond to a first layer group, and layers #4 to #7 may correspond to a second layer group (see FIG. 6A).

[0116] For a 7-layer PUSCH, layers #0 to #3 may correspond to a first layer group and layers #4 to #6 may correspond to a second group (see FIG. 6B). Alternatively, layers #0 to #2 may correspond to a first layer group and layers #3 to #6 may correspond to a second group.

[0117] For a six-layer PUSCH, layers #0 to #3 may correspond to a first layer group and layers #4 to #5 may correspond to a second group (see FIG. 6C). Alternatively, layers #0 to #1 may correspond to the first layer group and layers #2 to #5 may correspond to the second group. Alternatively, layers #0 to #2 may correspond to the first layer group and layers #3 to #5 may correspond to the second group.

[0118] For a five-layer PUSCH, layers #0 to #3 may correspond to the first layer group and layer #4 may correspond to the second group (see 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.

[0119] Although the case where two layer groups are applied / supported has been shown here, the number of layer groups may be three or more. Alternatively, the number of layer groups applied / supported may vary based on the total number of layers applied to PUSCH transmission. For example, three or more layer groups may be applied to M layers or more, and two or less layer groups may be applied to less than M layers.

[0120] <<Option 1-2>> Information regarding the mapping (or association) between layers and layer groups may be configured / instructed to the UE from the base station (or network) using RRC / MAC CE / DCI.

[0121] For example, the base station may configure / instruct the UE to use RRC / MAC CE / DCI to provide information on the number of layer groups / information on the number of layers included in each layer group. The UE may determine the correspondence between the layer groups and each layer based on the information configured / instructed by the base station. For example, at least one of the configured layer group (or layer group index), the number of layers (or layer index), and the number of layers corresponding to each layer group (or layer index corresponding to each layer group index) may be included in an RRC parameter related to PUSCH configuration (e.g., PUSCHconfig) or other RRC parameters.

[0122] In Option 1-1 / Option 1-2, information regarding the MCS corresponding to each layer group (or applied to each layer group) may be configured / instructed to the UE by the base station (or network) using RRC / MAC CE / DCI.

[0123] The MCS for each layer group may be supported / applied when a predetermined condition is met. The predetermined condition may be at least one of the number of PUSCH layers and a predetermined RRC parameter setting. For example, when the number of PUSCH layers is greater than a predetermined value (X), the MCS may be set / applied separately for each layer group. The predetermined value (X) may be, for example, 4, 6, or another value. Alternatively, the UE may apply the MCS for each layer group separately when a predetermined higher layer parameter setting / the number of PUSCH layers is greater than the predetermined value.

[0124] [STxMP PUSCH] The mapping (or association) of layers to layer groups may be determined based on the panel / TRP / TCI / SRI / SRS resource set with which each layer is associated.

[0125] For example, layers associated with a first panel / TRP / TCI / SRI / SRS resource set may be mapped to a first layer group, and layers associated with a second panel / TRP / TCI / SRI / SRS resource set may be mapped to a second layer group.

[0126] The first panel may correspond to a lower panel ID and the second panel may correspond to a higher panel ID, or the first panel may correspond to a higher panel ID and the second panel may correspond to a lower panel ID.

[0127] The first SRI may correspond to (or be indicated by) the first SRI field, and the second SRI may correspond to (or be indicated by) the second SRI field.

[0128] The first SRS resource set may correspond to an SRS resource set with a lower ID and the second SRS resource set may correspond to an SRS resource set with a higher ID, or 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.

[0129] Second Embodiment In the second embodiment, an example of determining a TB size when 1 TB / CW is transmitted on a PUSCH and different layers / layer groups of the PUSCH are transmitted with different MCSs will be described. In the following description, an example of UL transmission with more than four layers (e.g., 8 Tx with more than 4 layers) or simultaneous multi-panel transmission using an SDM scheme (e.g., STxMP SDM scheme) will be described, but applicable configurations are not limited to these.

[0130] When 1 TB / CW is transmitted on a PUSCH and different layers / layer groups of the PUSCH are transmitted using different MCSs, the TB size (or a predetermined parameter for determining the TB size (for example, N ｉｎｆｏ ) may be derived.

[0131] [Option 2-1] N ｉｎｆｏ is the number of layers / layer groups (or across all layers / layer groups) N ｉｎｆｏ_i may be calculated (or computed / derived) as the sum of N ｉｎｆｏ_i may be calculated based on the MCS and the number of layers (or layer number) of the i-th layer / layer group. For example, N may be calculated based on the following equation (9): ｉｎｆｏ may be calculated.

[0132] N corresponds to the number of layers / layer groups. A different MCS may be indicated for each layer / layer group. N may be predefined in the specification. For example, N may be 2 or another value. Alternatively, N may be configured / indicated to the UE by the base station via RRC / MAC CE / DCI.

[0133] R(i) corresponds to the target coding rate (e.g., target code rate) of the i-th layer / layer group, and may be determined / derived from the MCS indicated for (or corresponding to) the i-th layer / layer group.

[0134] Q ｍ（ｉ） corresponds to the modulation order (e.g., modulation order) of the i-th layer / layer group and may be determined / derived from the MCS indicated for (or corresponding to) the i-th layer / layer group.

[0135] N ＲＥ is the total number of REs allocated to the PUSCH (for example, the same N as in the existing system). ＲＥ ) or N ＲＥ N denotes the number of REs in the i-th layer / layer group. ＲＥ（ｉ） may be replaced by

[0136] In the TBS decision, N ｉｎｆｏ Steps other than the calculation step (e.g., steps 1, 3, and 4 other than step 2) may be performed in the same manner as steps supported by an existing system (e.g., Rel. 16). For example, step 2 supported by an existing system (e.g., Rel. 16) may be replaced with the method shown in Option 2-1 above, and the other steps (e.g., steps 1, 3, and 4) may be performed in the same manner as in the existing system.

[0137] [Option 2-2] One MCS may be selected from the MCSs across all the layers / layer groups (e.g., MCSs across all the layers / layer groups), and the TB size (TBS) may be calculated (or computed / derived) based on the selected MCS.

[0138] One MCS may be selected from multiple MCSs across all layers / layer groups by applying at least one of the following options 2-2-1 to 2-2-3.

[0139] <<Option 2-2-1>> The MCS corresponding to the first, second, or last layer / layer group may be selected.

[0140] <<Option 2-2-2>> An MCS associated with a predetermined panel / TRP / TCI / SRI / SRS resource set may be selected.

[0141] For example, an MCS associated with a first panel / TRP / TCI / SRI / SRS resource set may be selected, or an MCS associated with a second panel / TRP / TCI / SRI / SRS resource set may be selected.

[0142] The first panel may correspond to a lower panel ID and the second panel may correspond to a higher panel ID, or the first panel may correspond to a higher panel ID and the second panel may correspond to a lower panel ID.

[0143] The first SRI may correspond to (or be indicated by) the first SRI field, and the second SRI may correspond to (or be indicated by) the second SRI field.

[0144] The first SRS resource set may correspond to an SRS resource set with a lower ID and the second SRS resource set may correspond to an SRS resource set with a higher ID, or 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.

[0145] <<Option 2-2-3>> The selected MCS may 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.

[0146] N ｉｎｆｏ may be calculated (or derived) based on the selected MCS. For example, N ｉｎｆｏ may be calculated using equation (10). ｉｎｆｏ = N ＲＥ ・R・Q ｍ ・υ

[0147] R corresponds to a target coding rate (eg, a target code rate) determined from the selected MCS.

[0148] Q ｍ corresponds to the modulation order determined from the selected MCS.

[0149] ν corresponds to the total number of layers of PUSCH.

[0150] N ＲＥ corresponds to the total number of REs allocated to the PUSCH.

[0151] In the TBS decision, N ｉｎｆｏSteps other than the calculation step (e.g., steps 1, 3, and 4 other than step 2) may be performed in the same manner as steps supported by an existing system (e.g., Rel. 16). For example, step 2 supported by an 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.

[0152] Third Embodiment The third embodiment relates to the mapping (or association) of CWs and layers when more than four layers (eg, eight layers) of UL transmission are supported.

[0153] In existing systems (before Rel. 17), CW and layer mapping for one CW (e.g., CW-layer mapping) supports up to four layers (see Figure 7).

[0154] In this embodiment, CW-layer mapping for one CW up to a number of layers greater than four (for example, up to a maximum of eight layers) is defined (see FIG. 8). FIG. 8 shows an example of CW-layer mapping for one CW in layers 5-8.

[0155] The CW-layer mapping for one CW supporting up to eight layers may be defined by the same principles / mechanisms as the CW-layer mapping for one CW supporting up to four layers.

[0156] For example, the complex-valued modulation symbols d for codeword q are （ｑ） (0), ..., d （ｑ） (M （ｑ） ｓｙｍｂ −1) is layer x(i) = [x （０） (i)...x （υ－１） (i)] Ｔ where i=0, 1, ..., M ｌａｙｅｒ ｓｙｍｂ -1, υ is the number of layers, M ｌａｙｅｒ ｓｙｍｂcorresponds to the number of modulation symbols per layer (e.g., modulation symbols).

[0157] In this way, by defining CW-layer mapping for one CW when there are more than four layers, it is possible to appropriately control PUSCH transmission (1 CW) using more than four layers.

[0158] <Supplementary Note> At least one of the above-described embodiments may be applied only to UEs that have reported or support a specific UE capability.

[0159] The specific UE capability may indicate at least one of the following: Supporting specific processing / operation / control / information for at least one of the above embodiments, Supporting 8Tx PUSCH, or Supporting 8Tx PUSCH using more than 4 layers, up to 8 layers or up to 6 layers, or Supporting 8Tx PUSCH per MCS of one CW, more than 4 layers (or up to 8 layers or up to 6 layers), layer / layer group, or Supporting STxMP SDM scheme, or Supporting STxMP SDM scheme with one CW with MCS per CW.

[0160] Furthermore, the specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., cell, band, BWP), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)).

[0161] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0162] Also, at least one of the above-described embodiments may be applied to at least one of the following PUSCH transmissions: simultaneous multi-panel UL transmissions with up to four layers, UL transmissions with between four and eight layers, and single-panel UL transmissions with up to four layers.

[0163] Furthermore, at least one of the above-described embodiments may be applied when the UE is configured / activated / triggered with specific information related to the above-described embodiments (or performing the operations of the above-described embodiments) by higher layer signaling / physical layer signaling.

[0164] If the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, the UE may apply, for example, Rel. 15 / 16 behavior.

[0165] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment of the present disclosure. [Supplementary Note 1] A terminal comprising: a receiving unit that receives information on at least one of a plurality of Modulation and Coding Schemes (MCSs) corresponding to a plurality of layers, respectively, and an MCS corresponding to a plurality of layer groups, which are used for transmitting an uplink shared channel (PUSCH); and a control unit that controls 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. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the receiving unit receives information on the mapping relationship between the plurality of layers and the plurality of layer groups. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the control unit determines a parameter used for determining a transport block size, or the transport block size, based on a target coding rate and a modulation order determined from a plurality of MCSs corresponding to a plurality of layers, respectively, or a plurality of MCSs corresponding to a plurality of layer groups, respectively. [Supplementary Note 4] The terminal according to any one of Supplementary Note 1 to Supplementary Note 3, wherein the control unit determines a parameter to be used for determining a transport block size or a transport block size based on a target coding rate and a modulation order determined from a specific MCS selected from a plurality of MCSs corresponding to a plurality of layers, respectively, or a plurality of MCSs corresponding to a plurality of layer groups, respectively.

[0166] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0167] 9 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0168] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0169] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0170] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0171] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0172] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0173] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0174] 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.

[0175] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0176] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0177] The core network 30 may include network functions (Network Functions (NF)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0178] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0179] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0180] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0181] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0182] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.

[0183] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0184] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0185] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0186] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0187] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0188] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0189] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0190] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0191] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0192] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0193] (Base Station) Fig. 10 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0194] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0195] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0196] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0197] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0198] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0199] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0200] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0201] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0202] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0203] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0204] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0205] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0206] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0207] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0208] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0209] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0210] The transceiver 120 may transmit information regarding at least one of a plurality of Modulation and Coding Schemes (MCSs) corresponding to a plurality of layers and a plurality of MCSs corresponding to a plurality of layer groups, which are used for transmitting an uplink shared channel (Physical Uplink Shared Channel (PUSCH)).

[0211] The control unit 110 may perform control to indicate the mapping relationship between multiple layers and multiple layer groups.

[0212] (User Terminal) Fig. 11 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0213] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0214] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0215] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0216] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0217] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0218] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0219] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0220] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0221] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0222] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0223] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0224] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0225] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0226] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0227] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0228] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0229] The transceiver 220 may receive information regarding at least one of a plurality of Modulation and Coding Schemes (MCSs) corresponding to a plurality of layers and a plurality of MCSs corresponding to a plurality of layer groups, which are used for transmitting an uplink shared channel (Physical Uplink Shared Channel (PUSCH)). The transceiver 220 may also receive information regarding mapping relationships between a plurality of layers and a plurality of layer groups.

[0230] The control unit 210 may control 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.

[0231] The control unit 210 may determine the parameters / transport block size to be used for determining the transport block size based on a target coding rate and a modulation order determined from multiple MCSs corresponding to multiple layers respectively or multiple MCSs corresponding to multiple layer groups respectively.

[0232] The control unit 210 may determine the parameters to be used for determining the transport block size or the transport block size based on a target coding rate and modulation order determined from a specific MCS selected from a plurality of MCSs corresponding to a plurality of layers respectively or a plurality of MCSs corresponding to a plurality of layer groups respectively.

[0233] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0234] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0235] For example, a base station, a user terminal, or the like according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 12 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0236] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0237] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0238] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0239] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0240] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0241] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0242] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0243] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0244] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0245] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0246] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0247] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0248] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0249] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0250] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0251] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0252] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0253] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0254] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0255] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0256] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0257] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0258] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0259] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0260] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0261] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0262] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0263] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0264] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0265] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0266] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0267] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0268] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0269] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0270] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0271] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0272] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0273] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0274] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0275] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0276] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0277] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0278] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0279] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0280] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0281] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0282] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0283] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0284] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0285] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0286] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0287] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0288] 13 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0289] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0290] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0291] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0292] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0293] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0294] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0295] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0296] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0297] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0298] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0299] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0300] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0301] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0302] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0303] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0304] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0305] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0306] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0307] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0308] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0309] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "deciding" some action.

[0310] Furthermore, "judgment (decision)" may be read as "assuming," "expecting," "considering," or the like.

[0311] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0312] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0313] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0314] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0315] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0316] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0317] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0318] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0319] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

[0320] 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 receiving unit that receives information about multiple layers used in uplink (UL) transmission or simultaneous multi-panel transmission (STxMP) when the number of layers is greater than 4, A terminal having a control unit that determines the assignment of the plurality of layers in the UL transmission or the STxMP based on the aforementioned information and the number of the plurality of layers.

2. The terminal according to claim 1, wherein the control unit determines the allocation of the plurality of layers based on the sounding reference signal resource set in the case of STxMP.

3. A step of receiving information about multiple layers used in uplink (UL) transmission or simultaneous multi-panel transmission (STxMP) when the number of layers is greater than 4, A wireless communication method for a terminal, comprising the step of determining the assignment of the plurality of layers in the UL transmission or the STxMP based on the aforementioned information and the number of the plurality of layers.

4. A transmission unit that transmits information about multiple layers used in uplink (UL) transmission or simultaneous multi-panel transmission (STxMP) when the number of layers is greater than four, A base station having a control unit that instructs the allocation of the multiple layers in the UL transmission or the STxMP based on the aforementioned information and the number of the multiple layers.

5. A system including a terminal and a base station, The aforementioned terminal is A receiving unit that receives information about multiple layers used for uplink (UL) transmission or simultaneous multi-panel transmission (STxMP) when the number of layers is greater than four, The system includes a control unit that determines the assignment of the multiple layers in the UL transmission or the STxMP based on the aforementioned information and the number of the multiple layers, The aforementioned base station is A system having a transmitting unit that transmits the aforementioned information.