Terminal, wireless communication method, and base station

Abstract

The terminal according to one aspect of the present disclosure includes: a reception unit that receives a setting relating to the granularity of a precoding resource group (PRG) for uplink (UL) transmission; and a control unit that, based on the setting, controls the UL transmission for each of a plurality of PRGs divided within a certain bandwidth part (BWP) or within a certain physical uplink shared channel (PUSCH). The size of the PRG is determined based on the number of resource blocks (RBs) within the BWP or the number of RBs within the PUSCH.

Description

Terminal, wireless communication method, and base station

[0001] This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) was specified with the aim of achieving even higher data rates and lower latency (Non-Patent Literature 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) was specified with the aim of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP®) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (for example, 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later) 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] In Rel. 18 and later, UL subband precoding (which may also be called frequency-selective precoding) has been considered. However, the various regulations for implementing this are not yet sufficiently clear. Without these regulations, there is a risk that UL transmission using subband precoding cannot be properly controlled.

[0006] Therefore, one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmission.

[0007] A terminal according to one aspect of the present disclosure includes a receiving unit that receives settings relating to the granularity of precoding resource groups (PRGs) for uplink (UL) transmission, and a control unit that controls the UL transmission for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink shared channel (PUSCH) based on the settings, wherein the size of the PRG is determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH.

[0008] According to one aspect of this disclosure, UL transmission can be appropriately controlled.

[0009] Figures 1A and 1B show an example of frequency-selective precoding. Figure 2 shows an example of the correspondence between bandwidth size and RGB size (e.g., reference value). Figure 3 shows another example of frequency-selective precoding. Figure 4 shows an example of DL PRG. Figure 5 shows an example of UL PRG (Option 1-1) of the present disclosure. Figure 6 shows an example of UL PRG (Option 1-2 / 1-3) of the present disclosure. Figure 7 shows an example of UL PRG (Option 1-2) of the present disclosure. Figure 8 shows an example of UL PRG (Option 1-3) of the present disclosure. Figure 9 shows another example of UL PRG of the present disclosure. Figure 10 shows another example of UL PRG of the present disclosure. Figure 11 shows an example of UL PRG (Option 2-1) of the present disclosure. Figure 12 shows an example of UL PRG (Option 2-1 / 2-2) of the present disclosure. Figure 13 shows an example of the UL PRG of this disclosure (Option 2-3). Figure 14 shows an example of a processing procedure related to the UL PRG of this disclosure (Aspect 2-1). Figure 15 shows an example of a processing procedure related to the UL PRG of this disclosure (Aspect 2-2). Figure 16 shows an example of a schematic configuration of a wireless communication system according to one embodiment. Figure 17 shows an example of a base station configuration according to one embodiment. Figure 18 shows an example of a user terminal configuration according to one embodiment. Figure 19 shows an example of a hardware configuration of a base station and user terminal according to one embodiment. Figure 20 shows an example of a vehicle according to one embodiment.

[0010] (UL Subband Precoding) In Rel. 18 NR and later, when performing UL transmission (e.g., PUSCH transmission), it is expected that UL subband precoding (or frequency selective precoding) which applies multiple precodings in the frequency domain will be supported. Frequency selective precoding may also be interpreted as subband precoding, separate precoding, frequency group precoding, or frequency directional precoding.

[0011] In other words, it is assumed that the application of precoding is controlled based on a predetermined frequency unit. The frequency domain may be interpreted as the frequency domain or frequency direction. The frequency unit may be interpreted as a frequency resource unit, subband unit, frequency subunit unit, or bandwidth unit.

[0012] In this case, the issue becomes how to configure / instruct the subband precoding (e.g., precoding PMI) of a CB-based PUSCH.

[0013] Therefore, it is necessary to clarify the details of the operation that controls the application of precoding based on a predetermined frequency unit.

[0014] <Conditions for Frequency Selective Precoding> This section describes the conditions, rules, and parameters for precoding control in the frequency direction when frequency selective precoding (e.g., frequency selective precoding) is supported / configured for UL transmissions such as PUSCH.

[0015] If frequency-selective precoding is supported / configured, at least one of the following options 1-1 to 1-3 may be applied as a condition / rule / parameter for precoding control in the frequency direction.

[0016] The following options may apply to CB-based transmissions to a push of one or more (e.g., two) CW / TBs. If there are multiple (e.g., two) CW / TBs, the same configuration may be applied to the two CW / TBs, or different configurations may be applied.

[0017] [Option 1-1] The granularity (or level) of frequency-selective precoding for UL transmission may be defined / set. The granularity of precoding may be at least one of a predetermined subcarrier unit, a predetermined resource block (RB) unit, a predetermined physical resource block (PRB) unit, a predetermined resource block group (RBG) unit, a predetermined subband unit, or a precoding resource block group (PRG) unit.

[0018] The granularity of the precoding to be applied may be defined in the specification or set in the UE by higher-level layer parameters. Furthermore, the reference value (e.g., X) for applying a certain granularity may also be defined in the specification or set by higher-level layer parameters. For example, if an RGB unit (reference value (X)) is set, precoding may be applied separately to each of the X RGBs. The reference value X may be determined based on UE capability (e.g., UE capability).

[0019] Figure 1A shows an example where the granularity of precoding is set to RGB units (here, 4 RBG (reference value 4)). In this case, precoding may be applied / set separately for every 4 RBG during PUSCH transmission.

[0020] <Aspect 1-1> The granularity of subband precoding may be defined in the specification for predetermined conditions / parameters. The predetermined conditions / parameters may be at least one of a certain bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, bandwidth (BW) scheduled by DCI, and frequency range (FR).

[0021] The association between the granularity (or reference value) of subband precoding and predetermined conditions / parameters may be defined using a new table or an existing table. For example, a table relating the RGB size (or reference value) to the size of the bandwidth portion may be reused to define the association between the granularity of subband precoding and each parameter (see Figure 2).

[0022] Figure 2 shows an example of the correspondence between bandwidth size and RGB size. Multiple settings (cases) may be defined for the correspondence between bandwidth size and RGB size. The base station may notify the UE of which setting to use via higher-layer signaling or other means.

[0023] <Aspect 1-2> The granularity / reference value of frequency selection precoding (or subband precoding) may be set / instructed to the UE based on at least one of RRC, MAC CE, and DCI. For example, candidate granularity / reference values ​​corresponding to predetermined conditions / parameters (e.g., candidate granularity) may be defined in advance in the specifications or set by higher layer parameters, and the specific granularity / reference value to be applied may be instructed to the UE by MAC CE / DCI, etc.

[0024] In this way, by defining / setting the granularity at which frequency-selective precoding is applied to PUSCH, the UE can appropriately control frequency-selective precoding. Furthermore, by configuring the system to allow changes to the granularity / reference value of frequency-selective precoding, it becomes possible to flexibly control frequency-selective precoding in response to PUSCH transmission.

[0025] [Option 1-2] The number of frequency-selective precodings for UL transmission may be defined / set. The number of frequency-selective precodings (e.g., the number of frequency-selective precodings) may indicate the number of frequency segments to which precodings can be applied separately in the frequency direction, or the number of frequency segments to which different precodings can be applied in the frequency direction.

[0026] The frequency portion may also be called the frequency part. The UE may apply precoding separately to each frequency portion.

[0027] For example, Y frequency segments may be set for separate precoding with respect to a bandwidth of Z (Z BW). The application of separate precodings may be supported for each of the Y frequency segments.

[0028] Figure 1B shows the case where there are two frequency-selective precodings (e.g., frequency segments to which frequency-selective precoding is applied). In this case, it may be supported to apply separate precodings to the two frequency segments within a certain total UL bandwidth or a scheduled bandwidth.

[0029] <Aspect 2-1> The number of frequency-selective precodings (or subband precodings) may be defined for a predetermined condition / parameter. The predetermined condition / parameter may be at least one of a bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, bandwidth (BW) scheduled by DCI, and frequency range (FR).

[0030] The association between the number of frequency selection precodes and predetermined conditions / parameters may be defined using a new table or an existing table.

[0031] <Aspect 2-2> The number of frequency selection precodes may be set / instructed to the UE based on at least one of RRC, MAC CE, and DCI. For example, the number of candidates corresponding to predetermined conditions / parameters (e.g., candidate number) may be defined in advance by the specifications or set by higher-layer parameters, and the specific number to be actually applied may be instructed to the UE by MAC CE / DCI, etc.

[0032] Alternatively, the number of frequency selection precodes may be determined based on predetermined parameters. These predetermined parameters may be, for example, bandwidth or the frequency domain of the scheduled PUSCH.

[0033] By determining the number of frequency selection precodes based on notifications from the base station or predetermined parameters, it becomes possible to flexibly control frequency precoding.

[0034] [Option 1-3] For frequency selection precoding of UL transmission, frequency resources may be defined / set as separate groups (e.g., separate groups). A separate group may consist of at least one of a predetermined number of subcarriers (or predetermined subcarrier levels), a predetermined number of RBs (or predetermined RB levels), a predetermined number of PRBs (or predetermined PRB levels), a predetermined number of RBGs (or predetermined RBG levels), and a predetermined number of subbands (or predetermined subband levels).

[0035] The group ID of a separate group may be indicated as a frequency-selective precoding group. This group ID may be defined by specification for predetermined conditions / parameters at each level (e.g., X subcarrier / RB / PRB / RBG / subband levels) or may be set by higher-layer parameters. The predetermined conditions / parameters may be at least one of a bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, bandwidth (BW) scheduled by DCI, and frequency range (FR).

[0036] Levels indicated by the same group ID may be considered a group of a certain frequency portion and may have the same TPMI indicated (or applied). The group IDs for all levels may be set by RRC / MAC CE / DCI.

[0037] Figure 3 shows an example of applying frequency precoding based on groups (e.g., separate groups). Here, the same precoding is applied to the frequency domain corresponding to the first frequency portion (subband precoding group 00). Similarly, the same precoding is applied to the frequency domains corresponding to the second frequency portion (subband precoding group 01).

[0038] In this way, when performing frequency-selective precoding, grouping the frequency domain makes it possible to flexibly set the frequency portion to which each precoding is applied.

[0039] <Setting Frequency Selection Precoding> This section explains how to set frequency selection precoding for UL transmissions such as PUSCH.

[0040] The application of frequency selection precoding (e.g., enable / disable or activate / deactivate) may be set / indicated based on at least one of RRC, MAC CE, and DCI.

[0041] [DCI] A predetermined field of DCI may be used to dynamically instruct the UE whether or not to apply frequency selection precoding. The predetermined field may be set in a predetermined DCI format (for example, the DCI format used for scheduling PUSCH (e.g., DCI format 0_1 / 0_2)). The predetermined field may be a new field (e.g., 1 bit), or a field from an existing system (e.g., Rel. 17 or earlier) may be used.

[0042] A new field (for example, an instruction field for frequency selection precoding) may be defined and applied as an instruction for each PUSCH scheduled by each DCI. This allows for flexible control over whether or not frequency selection precoding is applied for each PUSCH transmission.

[0043] Alternatively, the new field may be defined and applied to one or more PUSCHs transmitted between the timing indicated by the new field and the new instruction (the next instruction). This allows for a configuration where the new field is set in the DCI only when switching whether or not frequency selection precoding is applied to PUSCH transmissions.

[0044] [RRC / MAC CE] The application of frequency selection precoding can be semi-statically set / instructed to the UE using RRC / MAC CE. In this case, the switching of frequency selection precoding can be controlled quasi-statically.

[0045] <Further consideration of subband precoding> As mentioned above, UL subband precoding (which may also be called frequency-selective precoding) has been considered since Rel. 18.

[0046] The following are examples of performance evaluations of UL subband precoding for different subband counts: • As the number of subbands increases (from 4TX to 8TX), the 50% and 95% UE throughput gains generally increase. For example, with 5 subbands, the 50% UE throughput gain is 2.6% to 4.6%. With 10 subbands, the 50% UE throughput gain is 4.6% to 7.4%. • The performance improvement in the 50% UE throughput gain for 8TX UE is greater than that for 4TX UE.

[0047] The increased DCI overhead required is related to the number of subbands scheduled per UE. For example, with 5 subbands, 88% of UEs are scheduled on one subband and 98% are scheduled on up to two subbands. With 10 subbands, 90% of UEs are scheduled on up to two subbands and 97% are scheduled on up to three subbands.

[0048] As mentioned above, DCIs have been proposed for precoding instructions for each subband (TPMI field for CB, SRI field for NCB) to support UL subband precoding.

[0049] However, precoding instructions for each subband require a TPMI field / SRI field for each subband (PRG), which can result in significant DCI overhead. Therefore, there is a need to reduce DCI overhead while supporting UL subband precoding (achieving a performance improvement equivalent to UL subband precoding).

[0050] [Subband precoding trigger conditions]

[0051] The trigger conditions for subband precoding for UL transmission (e.g., PUSCH transmission) may be implemented by higher-layer signaling (e.g., RRC / MAC CE) or physical layer signaling (e.g., DCI).

[0052] Subband precoding for PUSCH may be triggered (configured / instructed) by higher-layer signaling (e.g., RRC / MAC CE) or physical layer signaling (e.g., DCI).

[0053] The following are examples of applicable trigger conditions for subband precoding: • Cyclic prefix OFDM (CP-OFDM) only. • Discrete Fourier transform spread OFDM (DFT-s-OFDM) only. • CP-OFDM + DFT-s-OFDM. • When the UE is not configured for dynamic waveform switching. • When the UE is configured for dynamic waveform switching. • Codebook MIMO (Multi Input Multi Output) only. • Non-codebook MIMO only. • Both codebook MIMO and non-codebook MIMO. • 1TX / 2TX / 4TX codebook MIMO (coherent / partially coherent / non-coherent). • 8TX codebook MIMO (codebook 1 / 2 / 3 / 4). • One or more of 1TX / 2TX / 4TX / 8TX. - PUSCH scheduled / activated by at least one (may be more than one) of DCI formats 0_1 / 0_2 / 0_3. - Dynamic Grant PUSCH (DG-PUSCH) only. - Configured Grant PUSCH (CG-PUSCH) only. - Both DG-PUSCH and CG-PUSCH. - DMRS port for Rel. 15 (without Extended DMRS type configured) / DMRS port for Rel. 18 (with Extended DMRS configured). - Specific rank / layer (e.g., only one layer, or two layers or less).

[0054] The above-mentioned sub-band precoding for PUSCH transmission may be configured / indicated, for example, in units of precoding resource block groups (PRGs).

[0055] (DL PRG) The UE may assume that the granularity of precoding is P' consecutive resource blocks in the frequency domain. ＢＷＰ，ｉ Here, P' ＢＷＰ，ｉ is equal to any value of {2, 4, wideband}.

[0056] P' ＢＷＰ，ｉ may be referred to as the precoding granularity. That is, the precoding granularity may mean the number of consecutive resource blocks within a certain frequency domain (BWP).

[0057] P' ＢＷＰ，ｉ When P' is determined as {wideband}, the UE does not expect to be scheduled non - consecutive physical resource blocks (PRBs). Also, in this case (when P' is determined as {wideband}), the UE may assume that the same precoding is applied to the allocated resources associated with the same TCI state / QCL assumption. ＢＷＰ，ｉ

[0058] P' ＢＷＰ，ｉ When P' is determined as any value of {2, 4}, the precoding resource block group (PRG) may divide the bandwidth part i (BWP ｉ ) into P' ＢＷＰ，ｉ consecutive PRBs. In each PRG, the actual number of consecutive PRBs may be one or more.

[0059] The size of the first PRG is given by the following formula (A). P' ＢＷＰ，ｉ - N Ｓｔａｒｔ ＢＷＰ，ｉ mod P' ＢＷＰ，ｉ (A)

[0060] The size of the last PRG is given by the following formulas (B - 1, B - 2).

[0061] (N Ｓｔａｒｔ ＢＷＰ，ｉ + N ｓｉｚｅ ​ＢＷＰ，ｉ ) modP' ＢＷＰ，ｉ If ≠ 0, (N Ｓｔａｒｔ ＢＷＰ，ｉ +N ｓｉｚｅ ＢＷＰ，ｉ ) modP' ＢＷＰ，ｉ (B-1)

[0062] (N Ｓｔａｒｔ ＢＷＰ，ｉ +N ｓｉｚｅ ＢＷＰ，ｉ ) modP' ＢＷＰ，ｉ If = 0, P' ＢＷＰ，ｉ (B-2)

[0063] In the case of a PDSCH scheduled by a PDCCH having a DCI that is scrambled using a group-common RNTI (e.g., G (Group)-RNTI, G-CS (Configured Scheduling)-RNTI), N Ｓｔａｒｔ ＢＷＰ，ｉ This may be the start PRB of a common frequency resource (CFR), N ｓｉｚｅ ＢＷＰ，ｉ This may be the number of CFRs.

[0064] The UE may assume that the same precoding is applied to any consecutive allocations [resources] of a PRB within a single PRG.

[0065] <Physical Resource Block (PRB)> A PRB for a subcarrier spacing (SCS) setting μ is defined within a single bandwidth portion (BWP). The PRB can range from 0 to N. ｓｉｚｅ，μ ＢＷＰ，ｉ Numbers up to -1 may be assigned. 'i' may represent the BWP number / index.

[0066] BWP ｉ PRB n within μ ＰＲＢ and Common Resource Block (CRB) n μ ＣＲＢ The relationship between n is given by the following equation (C): μ ＣＲＢ = n μ ＰＲＢ +N Ｓｔａｒｔ，μＢＷＰ，ｉ (C)

[0067] Here, N Ｓｔａｒｔ，μ ＢＷＰ，ｉ BWP for PRB 0 ｉ This is the CRB that is initiated. In this disclosure, the index μ may be deleted or omitted if there is no risk of confusion.

[0068] In other words, the above N Ｓｔａｒｔ ＢＷＰ，ｉ and N Ｓｔａｒｔ，μ ＢＷＰ，ｉ These can be synonymous. Also, the above N ｓｉｚｅ ＢＷＰ，ｉ and N ｓｉｚｅ，μ ＢＷＰ，ｉ They can also be considered synonymous.

[0069] In this disclosure, Common Frequency Resources (CFRs), Public Revenue Blocks (PRBs) of CFRs, PRBs, and Common Resource Blocks (CRBs) may be interpreted interchangeably.

[0070] Thus, in DL subband precoding, PRG partitioning can be determined within the entire BWP.

[0071] Figure 4 shows an example of a DL PRG. In Figure 4, an example is shown in which there are 20 RBs (CRB #5 to #24) contained within one DL BWP.

[0072] As shown in Figure 4, CRBs #5 to #24 may be classified into six groups: PRGs #0 to #5. Specifically, CRBs #5 to #7 correspond to PRG #0, CRBs #8 to #11 correspond to PRG #1, CRBs #12 to #15 correspond to PRG #2, CRBs #16 to #19 correspond to PRG #3, CRBs #20 to #23 correspond to PRG #4, and CRB #24 corresponds to PRG #5.

[0073] In other words, in the example in Figure 4, the first PRG size is 3 (corresponding to PRG #0), the last PRG size is 1 (corresponding to PRG #5), and the other PRG sizes (other than the first and last) are 4 (PRG #1 to #4).

[0074] (Processing of PUSCH) The following is an example of the existing processing procedure (steps) for PUSCH.

[0075] <Layer Mapping> The complex modulation symbol of each transmitted codeword can be mapped to up to four layers according to a specific correspondence.

[0076] x （λ） (i) may mean the modulation symbol in layer λ after layer mapping.

[0077] Here, i = 0, 1, ..., M ｌａｙｅｒ ｓｙｍｂ It can be any value of -1. ｌａｙｅｒ ｓｙｍｂ λ may represent the number of modulation symbols per layer. λ may also be any value of 0, 1, ..., ν-1. ν may represent the number of layers.

[0078] <Transform Precoding> Also, y （λ） (i) may mean the modulation symbol in layer λ after transform precoding.

[0079] <Precoding> y （λ） The vector block for (i) is precoded according to the following equation (D):

[0080] Here, i = 0, 1, ..., M ａｐ ｓｙｍｂ It can be any value of -1. Also, M ａｐ ｓｙｍｂ = M ｌａｙｅｒ ｓｙｍｂ It is. {p ０ , ..., p ρ－１} may mean [a set of] antenna ports. ρ may mean the number of antenna ports.

[0081] <Mapping to Virtual Resource Blocks (VRBs)> For each antenna port p used for PUSCH transmission, a block z of complex symbols is created to match the transmission power specified in the specifications. （ｐ） (0), ..., z （ｐ） (M ａｐｓｙｍｂ -1) is multiplied by the amplitude scaling factor. Also, the block of complex symbols is a resource element (k', l) in the VRB that is assigned to transmission. ｐ，μ The items are mapped in order of whether they satisfy all of the specified conditions.

[0082] Resource elements (k', l) assigned to PUSCH according to the specifications. ｐ，μ The mapping to must be in increasing order of index k' in the assigned VRB.

[0083] Here, k'=0 is the first subcarrier in the lowest VRB allocated for transmission, and is then mapped to index l (which has a starting position given by the specification).

[0084] That is, for each antenna port p, the block of complex number symbols (which may simply be called symbols) is first index k', then index l, in the resource element (k', l) within the VRB. ｐ，μ It is mapped to (i.e., the subcarrier is mapped first, then the OFDM symbol).

[0085] (Analysis) The size of the DL / UL PRG (number of PRGs) may be predefined by the specification, set / instructed by upper layer signaling / physical layer signaling, or determined according to UE capabilities.

[0086] By the way, in the case of PUSCH, the method for determining which resource block (RB) belongs to a single PRG is not clear (Problem #1).

[0087] Furthermore, the existing PUCH processing procedure applies wideband precoding. However, if subband precoding is to be applied, the existing procedure needs to be modified (Problem #2).

[0088] For example, it is necessary to clarify the procedure for each subband precoding and the subband-specific mapping to virtual resource blocks (VRBs).

[0089] Furthermore, DL PRG uses precoding granularity (P' ＢＷＰ，ｉ ), that is, the following constraints are stipulated for the number of RBs within a single PRG.

[0090] UE follows existing specifications for the bandwidth portion i (BWP ｉ If the nominal resource block group (RBG) size P = 2 is set for ) or if the UE is set to the upper layer parameter vrb-ToPRB-Interleaver(BWP ｉ If the interleaving unit for the VRB to PRB mapping provided by the PDSCH setting (PDSCH-Config) is set to 2, then the UE will be P' ＢＷＰ，ｉ You do not need to expect (or expect) that the value will be set to =4.

[0091] These constraints need to be defined for UL PRG (Issue #3).

[0092] As described above, various regulations concerning UL PRG are still not sufficiently clear. Without clear regulations, UEs may not be able to properly control UL transmissions.

[0093] Therefore, in view of these factors, the present inventors conceived of the wireless communication method according to this disclosure.

[0094] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0095] (Various substitutions) In this disclosure, words enclosed in parentheses () may indicate an explanation of the preceding word (e.g., an explanation of spelling), a paraphrase, a specific example, or supplementary explanation. Also, in this disclosure, words enclosed in square brackets [] may be interpreted as part of the overall meaning of the text, or they may be interpreted as being excluded (ignored). Note that parentheses () and square brackets [] may be used for purposes / meanings other than those described above.

[0096] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0097] In this disclosure, terms such as notice, activate, deactivate, indicate (or specify), select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and capable of operating may be interpreted interchangeably.

[0098] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Elements (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0099] In this disclosure, the higher-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0100] In this disclosure, MAC signaling may include, for example, MAC Control Elements (MAC CEs) and MAC Protocol Data Units (PDUs). Broadcast information may include, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), Remaining Minimum System Information (RMSIs), and Other System Information (OSIs).

[0101] In this disclosure, physical layer signaling may include, for example, Downlink Control Information (DCI) and Uplink Control Information (UCI).

[0102] In this disclosure, terms such as index, identifier (ID), indicator, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, subset, etc., may be interpreted interchangeably.

[0103] In this disclosure, the terms used include: panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmit entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relationship, 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 relationship group, Code Division Multiplexing (CDM) group, Reference Signal group, CORESET group, Physical Uplink Control The following terms may be interchangeable: 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.

[0104] In this disclosure, TPMI and TPMI index may be interpreted as interchangeable. Port and antenna port may be interpreted as interchangeable. 8TX (8 transmit) may mean 8 ports and 8 antenna ports. Port / antenna port may mean port / antenna port for UL (e.g., SRS / PUSCH) transmit. In this disclosure, SRS resource set and resource set may be interpreted as interchangeable. Coherent group and SRS resource set may be interpreted as interchangeable.

[0105] This disclosure is not limited to 2TX, but may also apply to 5TX, 6TX, 7TX, TX of 8 or more, TX of 4 or less (1 to 4TX), etc. In the following embodiments, "2" may be read as "n (where n is any integer)," in which case the number of layers / ports etc. described assuming the maximum value is "2" can be appropriately read by a person skilled in the art assuming the maximum value is "n."

[0106] In this disclosure, "having the ability to..." may be interpreted as "supporting / reporting the ability to...".

[0107] In this disclosure, rank, transmission rank, number of layers, and number of antenna ports may be interpreted interchangeably. Also, the application of one codeword and the number of layers being four or less may be interpreted interchangeably. The application of two codewords and the number of layers being greater than four may be interpreted interchangeably.

[0108] In this disclosure, a table may be interpreted as one or more tables.

[0109] In this disclosure, the terms table, mapping, correspondence, association, and relationship may be interpreted interchangeably.

[0110] In this disclosure, the measured RS (which may also be called the measured RS or the RS being measured) may be a QCL source RS in an active (activated) TCI state / indicated TCI state.

[0111] Furthermore, in the following embodiments, DCI may mean a DCI that schedules at least one of PUSCH and PDSCH (for example, DCI format 0_x, 1_x (where x is an integer)).

[0112] In this disclosure, UL transmission may be interpreted as equivalent to DL reception. In this case, PUUSCH may be interpreted as equivalent to PDSCH.

[0113] The association between the precoding matrix W and the TPMI index in this disclosure may be defined in Specification 1 for Physical Channels and Modulation (Physical channels and modulation / Uplink / Physical channels / Physical uplink shared channel / Precoding). In this disclosure, the association, table P-x, TMPI table, precoding matrix table, and precoder table may be interchangeable.

[0114] In this disclosure, the association between precoding information (TPMI) and layer count (TRI) and the index (precoding information field value) may be defined in Specification 2 for Multiplexing and channel coding (Multiplexing and channel coding / Downlink transport channels and control information / Downlink control information / DCI formats / DCI format 0_1). In this disclosure, the association, table D-x, TRI / TPMI instruction table, DCI instruction table, and precoding information table may be interchangeable.

[0115] In this disclosure, TPMI, TPMI field, and precoding information may be interpreted interchangeably.

[0116] In this disclosure, resource blocks (RBs), physical resource blocks (PRBs), resource block groups (RBGs), subbands, widebands, and pre-coded resource block groups (PRGs) may be interpreted interchangeably.

[0117] In each of the following embodiments, the precoding matrix / precoder may mean a complete / partial / non-coherent precoder.

[0118] In this disclosure, existing precoders and wideband precoders may be interpreted interchangeably.

[0119] In this disclosure, novel precoder, subband precoder, precoder cycling, and cyclic precoder may be used interchangeably.

[0120] In this disclosure, precoder cycling may mean a [novel] precoder obtained (calculated) by multiplying an existing precoder by a specific matrix (which may be called cycling).

[0121] In this disclosure, the channel / signal subject to UL transmission may be any channel / signal in addition to PUSCH, SRS, and PUCCH.

[0122] In this disclosure, CC and BWP may be interpreted interchangeably. Furthermore, each CC may be interpreted interchangeably with each BWP within a CC.

[0123] In this disclosure, the restrictions and conditions may be interpreted interchangeably.

[0124] (Wireless Communication Method) The embodiments of this disclosure relating to precoder instructions for UL transmission can be broadly classified as follows: • First embodiment: Determination of PRG size. • Second embodiment: Additional processing steps for PUSCH (division of modulation symbols). • Third embodiment: Restrictions / constraints / conditions for UL subband precoding (precoding granularity). Each embodiment will be described below based on these.

[0125] In this disclosure, each embodiment / option may be applied individually or in combination with others.

[0126] In each of the following embodiments, a number (e.g., 0, 1, 2, etc.) corresponding to a certain index (e.g., TPMI index, antenna port index, rank, etc.) may be read as a number preceded by a # (e.g., #0, #1, #2, etc.).

[0127] The UE may control UL transmission by applying the present disclosure (the various provisions described above and the embodiments described below). The NW / BS / gNB may provide / transmit to the UE settings / instructions, etc., for the UE to implement such control. Furthermore, the NW / BS / gNB may perform various controls to receive the UL transmission from the UE.

[0128] The UL transmissions of this disclosure are applicable not only to single / multi-TRP pushes, but also to the multi-TRP push repetitions of Rel. 17, or the STxMP SFN / SDM pushes of Rel. 18.

[0129] In this disclosure, subband, PRG, and subgroup may be interpreted interchangeably.

[0130] In this disclosure, Precoder, TPMI (for codebook-based PUCH), and SRI (for non-codebook-based PUCH) may be interpreted interchangeably.

[0131] In this disclosure, RB, PRB, and CRB may be interpreted as interchangeable.

[0132] According to the wireless communication method described herein, various regulations concerning UL PRGs become clear to the UE. Based on these regulations, the UE can appropriately control UL transmission. This improves communication throughput and communication quality.

[0133] <First Embodiment> The first embodiment addresses the above-mentioned problem #1 and relates to the determination of PRG size (number of PRGs).

[0134] More specifically, this disclosure describes a method for determining the PRG size / number of PRGs in a single PUSCH, and a method for selecting / determining the RBs included in (belonging to) a single PRG.

[0135] In this disclosure, P may mean the granularity of the precoding (which may also be called precoding granularity / precoding level / PRG size).

[0136] Precoding granularity (which may also be simply called granularity) may refer to the number of resource blocks contained within a single PRG.

[0137] In this disclosure, precoding granularity, number of RBs per PRG, PRG size, and number of PRGs may be interpreted interchangeably.

[0138] The precoding granularity may be predefined by the specification, set / instructed by higher layer signaling (RRC / MAC CE) / physical layer signaling (DCI), or determined according to UE capabilities.

[0139] With regard to the determination of PRG, at least one of the following options may be applied:

[0140] <<Option 1>> The division of the PRG may be determined within the entire UL BWP (within a whole BWP). That is, the same determination method as for DL ​​PRG may be used. Note that the above-mentioned provisions for DL ​​PRG should be read as UL BWP instead of BWP, and P' ＢＷＰ，ｉ This option can be applied by replacing with P.

[0141] For example, N Ｓｔａｒｔ ＢＷＰ，ｉ This may be the initiation PRB (i.e., initiation CRB) of the CFR, and N ｓｉｚｅ ＢＷＰ，ｉ This may be the number of RBs (size of the BWP) in the corresponding UL BWP.

[0142] P, as described later, may also be called precoding granularity. That is, precoding granularity may mean the number of consecutive resource blocks within a certain frequency domain (BWP).

[0143] Option 1 can be further classified into the following options.

[0144] (Option 1-1) The initial PRG size of a certain UL BWP is given by the following formula (1-1). P - N Ｓｔａｒｔ ＢＷＰ，ｉ mod P (1-1)

[0145] The final PRG size of a certain UL BWP is given by the following formulas (1-1-1, 1-1-2).

[0146] (N Ｓｔａｒｔ ＢＷＰ，ｉ + N ｓｉｚｅ ＢＷＰ，ｉ ) mod P ≠ 0, (N Ｓｔａｒｔ ＢＷＰ，ｉ + N ｓｉｚｅ ＢＷＰ，ｉ ) mod P (1-1-1)

[0147] (N Ｓｔａｒｔ ＢＷＰ，ｉ + N ｓｉｚｅ ＢＷＰ，ｉ ) mod P = 0, P (1-1-2)

[0148] The sizes of other PRGs (PRGs other than the first and the last) may be P.

[0149] FIG. 5 is a diagram showing an example (Option 1-1) of the UL PRG of the present disclosure. FIG. 5 shows an example where the number of RBs included in one UL BWP is 20 (CRB#5 to #24).

[0150] As shown in FIG. 5, CRB#5 to #24 may be classified into six groups of PRG#0 to #5. Specifically, CRB#5 to #7 correspond to PRG#0, CRB#8 to #11 correspond to PRG#1, CRB#12 to #15 correspond to PRG#2, CRB#16 to #19 correspond to PRG#3, CRB#20 to #23 correspond to PRG#4, and CRB#2 are corresponding to PRG#5.

[0151] That is, in the example of FIG. 5, the initial PRG size is 3 (corresponding to PRG#0), the final PRG size is 1 (corresponding to PRG#5), and the sizes of the other (other than the first and the last) PRGs are 4 (PRG#1 to #4).

[0152] (Option 1-2) The initial PRG size of a given UL BWP is given by the following equations (1-2-1, 1-2-2):

[0153] N ｓｉｚｅ ＢＷＰ，ｉ If modP≠0, then N ｓｉｚｅ ＢＷＰ，ｉ modP (1-2-1)

[0154] N ｓｉｚｅ ＢＷＰ，ｉ If modP = 0, then P (1 - 2 - 2)

[0155] Other PRG sizes (PRGs other than the first one) may be P.

[0156] ((Variations)) The initial PRG size is N ｓｉｚｅ ＢＷＰ，ｉ It may also be given as modP + P.

[0157] Figure 6 shows an example of the UL PRG of this disclosure (Option 1-2 / 1-3). Figure 6 shows an example in which there are 20 RBs (CRB #5 to #24) contained within a single UL BWP.

[0158] As shown in Figure 6, CRBs #5 to #24 may be classified into five groups: PRGs #0 to #4. Specifically, CRBs #5 to #8 correspond to PRG #0, CRBs #9 to #12 correspond to PRG #1, CRBs #13 to #16 correspond to PRG #2, CRBs #17 to #20 correspond to PRG #3, and CRBs #21 to #24 correspond to PRG #4.

[0159] In other words, in the example in Figure 6, the first PRG size is 4 (corresponding to PRG #0), and the other PRG sizes (PRGs #1 to #4) are also 4.

[0160] Figure 7 shows an example of the UL PRG (Option 1-2) of this disclosure. Figure 7 shows an example in which there are 21 RBs (CRB #5 to #25) contained within a single UL BWP.

[0161] As shown in Figure 7, CRB#5 to #25 may be classified into six groups: PRG#0 to #5. Specifically, CRB#5 corresponds to PRG#0, CRB#6 to #9 corresponds to PRG#1, CRB#10 to #13 corresponds to PRG#2, CRB#14 to #17 corresponds to PRG#3, CRB#18 to #21 corresponds to PRG#4, and CRB#22 to #25 corresponds to PRG#5.

[0162] In other words, in the example in Figure 7, the first PRG size is 1 (corresponding to PRG #0), and the other PRG sizes (PRGs #1 to #5) are 4.

[0163] (Option 1-3) The final PRG size of a given UL BWP is given by the following equations (1-3-1, 1-3-2):

[0164] N ｓｉｚｅ ＢＷＰ，ｉ If modP≠0, then N ｓｉｚｅ ＢＷＰ，ｉ modP (1-3-1)

[0165] N ｓｉｚｅ ＢＷＰ，ｉ If modP = 0, then P (1 - 3 - 2)

[0166] Other PRG sizes (PRGs other than the last one) may be P.

[0167] ((Variations)) The last PRG size is N ｓｉｚｅ ＢＷＰ，ｉ It may also be given as modP + P.

[0168] In the example in Figure 6, the last PRG size is 4 (corresponding to PRG #4), and the sizes of the other PRGs (PRGs #0 to #3) are also 4.

[0169] Figure 8 shows an example of the UL PRG (Options 1-3) of the present disclosure. Figure 8 shows an example in which there are 21 RBs (CRB #5 to #25) contained within a single UL BWP.

[0170] As shown in Figure 8, CRBs #5 to #25 may be classified into six groups: PRGs #0 to #5. Specifically, CRBs #5 to #8 correspond to PRG #0, CRBs #9 to #12 correspond to PRG #1, CRBs #13 to #16 correspond to PRG #2, CRBs #17 to #20 correspond to PRG #3, CRBs #21 to #24 correspond to PRG #4, and CRB #25 corresponds to PRG #5.

[0171] In other words, in the example in Figure 8, the last PRG size is 1 (corresponding to PRG #5), and the other PRG sizes (PRG #0 to #4) are 4.

[0172] (Note) In this disclosure, CRB and PRB may be interpreted interchangeably.

[0173] The number of PRGs within a single PUSCH, and which RBs within a single PUSCH belong to which PRG, may be determined based on which RBs / PRGs within the corresponding BWP are occupied by the PUSCH.

[0174] Figures 9 and 10 show another example of the UL PRG of this disclosure. Figures 9 and 10 show an example in which the correspondence between the RBs in the PUSCH and the corresponding CRB / PRG of the UL BWP is determined in the case where the number of RBs in the PUSCH is 10.

[0175] For example, as shown in Figure 9, the 10 RBs in PUSCH may be classified into three groups: PRG#0 to #2.

[0176] More specifically, PRG#0 in PUSCH may correspond to CRB#5 to CRB#7, PRG#1 in PUSCH may correspond to CRB#8 to CRB#11, and PRG#2 in PUSCH may correspond to CRB#12 to CRB#14.

[0177] In this case, the size (number of RBs) of PRG#0 of PUSCH may be 3, the size of PRG#1 of PUSCH may be 4, and the size of PRG#2 of PUSCH may be 3. That is, all RBs / PRGs for PRG#0 and #1 are occupied by PUSCH, and some of the RBs / PRGs for PRG#2 are occupied by PUSCH.

[0178] Alternatively, as shown in Figure 10, the 10 RBs in PUSCH may be classified into four groups, PRG#1 to #4.

[0179] More specifically, PRG#1 in PUSCH may correspond to CRB#11, PRG#2 in PUSCH may correspond to CRB#12 to CRB#15, PRG#3 in PUSCH may correspond to CRB#16 to CRB#19, and PRG#4 in PUSCH may correspond to CRB#20.

[0180] In this case, the size (number of RBs) of PRG#1 and #4 of PUSCH is 1, and the size of PRG#2 and #3 of PUSCH may be 4. That is, for PRG#1 and #4, some RB / PRGs are occupied by PUSCH, and for PRG#2 and #3, all RB / PRGs are occupied by PUSCH.

[0181] <<Option 2>> The division of the PRG can be determined within a single PUSCH.

[0182] Here, N Ｓｔａｒｔ ＰＵＳＣＨ This may be the start CRB / VRB (virtual resource block) of PUSCH, and N ｓｉｚｅ ＰＵＳＣＨ This may be the number of RBs in the corresponding PUSCH.

[0183] Option 2 can be further classified into the following options.

[0184] (Option 2-1) The initial PRG size of a PUSCH is given by the following equation (2-1): P - N Ｓｔａｒｔ ＰＵＳＣＨ modP (2-1)

[0185] The final PRG size of a certain PUSCH is given by the following equations (2-1-1, 2-1-2).

[0186] (N Ｓｔａｒｔ ＰＵＳＣＨ +N ｓｉｚｅ ＰＵＳＣＨ ) If modP≠0, (N Ｓｔａｒｔ ＰＵＳＣＨ +N ｓｉｚｅ ＰＵＳＣＨ ) modP (2-1-1)

[0187] (N Ｓｔａｒｔ ＰＵＳＣＨ +N ｓｉｚｅ ＰＵＳＣＨ ) If mod P = 0, then P (2 - 1 - 2)

[0188] The size of other PRGs (PRGs other than the first and last) may be P.

[0189] Figure 11 shows an example of the UL PRG of this disclosure (Option 2-1). Figure 11 shows an example in which there are 10 RBs (PRBs) (RB #0 to #9) contained within a single PUSCH.

[0190] As shown in Figure 11, RB#0 to #9 may be classified into three groups: PRG#0 to #2. Specifically, RB#0 to #3 correspond to PRG#0, RB#4 to #7 correspond to PRG#1, and RB#8 to #9 correspond to PRG#2.

[0191] In other words, in the example in Figure 11, the first PRG size is 4 (corresponding to PRG #0), the last PRG size is 2 (corresponding to PRG #2), and the other PRG sizes (excluding the first and last) are 4 (corresponding to PRG #1).

[0192] Figure 12 shows an example of the UL PRG of this disclosure (Option 2-1 / 2-2). Figure 12 shows an example in which there are 10 RBs (RB #6 to #15) contained within a single PUSCH.

[0193] As shown in Figure 12, RB#6 to #15 may be classified into three groups: PRG#0 to #2. Specifically, RB#6 to #7 correspond to PRG#0, RB#8 to #11 correspond to PRG#1, and RB#12 to #15 correspond to PRG#2.

[0194] In other words, in the example in Figure 12, the first PRG size is 2 (corresponding to PRG #0), the last PRG size is 4 (corresponding to PRG #2), and the other PRG sizes (other than the first and last) are 4 (corresponding to PRG #1).

[0195] (Option 2-2) The initial PRG size of a PUSCH is given by the following equations (2-2-1, 2-2-2):

[0196] N ｓｉｚｅ ＰＵＳＣＨ If modP≠0, then N ｓｉｚｅ ＰＵＳＣＨ modP (2-2-1)

[0197] N ｓｉｚｅ ＰＵＳＣＨ If modP = 0, then P (2 - 2 - 2)

[0198] Other PRG sizes (PRGs other than the first one) may be P.

[0199] ((Variations)) The initial PRG size is N ｓｉｚｅ ＰＵＳＣＨ It may also be given as modP + P.

[0200] In the example in Figure 12, the first PRG size is 2 (corresponding to PRG #0), and the other PRG sizes (other than the first) are 4 (corresponding to PRG #1 to #2).

[0201] (Option 2-3) The final PRG size of a PUSCH is given by the following equations (2-3-1, 2-3-2):

[0202] N ｓｉｚｅ ＰＵＳＣＨ If modP≠0, then N ｓｉｚｅ ＰＵＳＣＨ modP (2-3-1)

[0203] N ｓｉｚｅ ＰＵＳＣＨ If modP = 0, then P (2 - 3 - 2)

[0204] Other PRG sizes (PRGs other than the last one) may be P.

[0205] ((Variations)) The last PRG size is N ｓｉｚｅ ＰＵＳＣＨ It may also be given as modP + P.

[0206] Figure 13 shows an example of the UL PRG of this disclosure (Option 2-3). Figure 13 shows an example in which there are 10 RBs (RB #6 to #15) contained within a single PUSCH.

[0207] As shown in Figure 13, RB#6 to #15 may be classified into three groups: PRG#0 to #2. Specifically, RB#6 to #9 correspond to PRG#0, RB#10 to #13 correspond to PRG#1, and RB#14 to #15 correspond to PRG#2.

[0208] In other words, in the example in Figure 13, the last PRG size is 2 (corresponding to PRG #2), and the other PRG sizes (excluding the last one) are 4 (corresponding to PRG #0 to #1).

[0209] This embodiment clarifies the method for determining the PRG size for UL. Based on this method, the UE can appropriately control UL transmission.

[0210] <Second Embodiment> The second embodiment addresses the above-mentioned problem #2 and relates to an additional processing procedure for PUSCH.

[0211] <<Aspect 2-1>> In the PUSCH processing procedure, a new step may be added before precoding to divide the modulation symbols in a certain layer into multiple subgroups (subbands).

[0212] Figure 14 shows an example of a processing procedure related to the UL PRG of this disclosure (Aspect 2-1).

[0213] In this disclosure, any additional new procedure (additional procedure / additional processing procedure) may be referred to as subgroup / subband partitioning, etc.

[0214] In this disclosure, subgroups and subbands may be interpreted interchangeably. A subgroup / subband may be represented by g, where g is the index of the subgroup / subband and may be a value of 0, 1, ..., G-1. G may represent the number of subgroups / subbands (and so on).

[0215] In this disclosure, complex number symbols, modulation symbols, and symbols may be interpreted as interchangeable.

[0216] Modulation symbols within subgroup g may be transmitted within subband g.

[0217] The number of subgroups may be the same as the number of subbands in subband precoding.

[0218] The new procedure may be performed after layer mapping and before precoding (if transform precoding is not performed), or it may be performed after transform precoding and before precoding.

[0219] (Definition #1) y （λ） (i) may mean the modulation symbol in layer λ after the new procedure (subgroup division).

[0220] Here, i can be any value from 0, 1, ..., M-1. M may represent the number of modulation symbols per layer. Also, λ may be any value from 0, 1, ..., ν-1. ν may represent the number of [transmit] layers.

[0221] (Definition #2) y （λ，ｇ） (i) may mean the modulation symbol within subgroup g in layer λ.

[0222] Here, i = 0, 1, ..., M ｇ It can be any value of -1. ｇ λ may represent the number of modulation symbols within subgroup g (i.e., the number of symbols per subgroup). λ may also be a value of 0, 1, ..., ν-1. ν may represent the number of [transmit] layers.

[0223] Precoding may be performed for each subgroup / subband.

[0224] The above y （λ，ｇ） The vector block for (i) may be precoded, for example, according to equation (3).

[0225] Here, i = 0, 1, ..., M ｇ It can be any value of -1. ０ , ..., p ρ－１} may mean [a set of] antenna ports. ρ may mean the number of antenna ports. z （ｐ，ｇ）(i) may mean the modulation symbol within subgroup g at antenna port p. ｇ This can be interpreted as the subband precoder of subband g.

[0226] The mapping to the VRB may be performed for each subgroup of modulation symbols and for each subband. For example, for each antenna port, the modulation symbols in subgroup g may be mapped to the VRB of subband g of PUSCH.

[0227] For each subgroup / subband mapping, the mapping order may be the same as in the existing specifications. Specifically, the modulation symbols may be mapped starting from modulation symbol 0, first to the subcarrier index, and then in increasing order of the OFDM symbol index.

[0228] (Definition #3) The number (total number) of modulation symbols in a certain layer λ may be represented by M.

[0229] (Definition #4) The number of RBs in a subband g is N ｇ It can be expressed as N. ｇ This may be determined based on the first embodiment described above. That is, N in the first embodiment ｓｉｚｅ ＢＷＰ，ｉ is, N ｇ These can be interpreted interchangeably. Also, the number of RBs (total) within a single PUSCH can be represented by N.

[0230] Here, the number of modulation symbols for each subgroup g in a certain layer λ (M ｇ ) can be expressed by the following equation (4). M ｇ = M*N ｇ / N (4)

[0231] <<Aspect 2-2>> The new procedure in Aspect 2-1 does not need to be added. That is, the modulation symbol does not need to be divided into multiple subgroups (subbands).

[0232] Instead, all modulation symbols may be precoded by each subband precoder.

[0233] Figure 15 shows an example of a processing procedure related to the UL PRG of this disclosure (Aspect 2-2).

[0234] (Definition #5) y （λ） (i) may represent the modulation symbol in layer λ.

[0235] Here, i can be any value from 0, 1, ..., M-1. M may represent the number of modulation symbols per layer (i.e., the number of symbols within a layer). Also, λ may be any value from 0, 1, ..., ν-1. ν may represent the number of [transmit] layers.

[0236] Precoding is performed by each subband precoder W ｇ It may be executed by W. ｇ This can be interpreted as the subband precoder of subband g.

[0237] The above y （λ） The vector block for (i) may be precoded, for example, according to equation (5).

[0238] Here, i can be any value from 0, 1, ..., M-1. {p ０ , ..., p ρ－１} may mean [a set of] antenna ports. ρ may mean the number of antenna ports. z （ｐ，ｇ） (i) may mean the modulation symbol of subband g at antenna port p (precoded by the subband g precoder).

[0239] The mapping to the VRB may be performed for each subband of the VRB. For example, for each antenna port p, the modulation symbol z （ｐ，ｇ） (i) may be mapped to the VRB of subband g.

[0240] As mentioned above, z （ｐ，ｇ） (i) may mean a modulation symbol precoded by a subband g precoder.

[0241] For each subband mapping, the mapping order may be the same as in the existing specifications. Specifically, the modulation symbols may be mapped starting with modulation symbol 0, first to the subcarrier index, and then in increasing order of the OFDM symbol index.

[0242] The following are examples of differences from the existing specifications.

[0243] For example, if following the order of existing specifications, the modulation symbol z （ｐ，ｇ） (i) may be mapped to a resource element (k, l).

[0244] Here, if the resource element (k, l) belongs to a subband #1, the modulation symbol z （ｐ，１） (i) is mapped to the resource element (k, l).

[0245] Furthermore, if the resource element (k, l) belongs to subband #2, the modulation symbol z （ｐ，２） (i) is mapped to the resource element (k, l).

[0246] According to this embodiment, additional processing steps for PUSCH (e.g., subgroup / subband division of modulation symbols) or precoding steps for each subgroup / subband become clear. The UE can appropriately control UL transmission according to these steps.

[0247] <Third Embodiment> The third embodiment addresses the above-mentioned problem #3 and relates to restrictions / constraints / conditions on UL subband precoding (precoding granularity).

[0248] The following constraints may apply to UL subband precoding.

[0249] The above-mentioned constraints for DL ​​PRG may apply. More specifically, if the UE follows the existing specifications, the bandwidth portion i (BWP ｉ If the nominal resource block group (RBG) size P for ) is set to 2, the UE does not need to expect (or should not expect) P to be set to 4.

[0250] If the UE sets the nominal RBG size P for the bandwidth portion i according to the existing specifications, the UE does not need to expect (or should not expect) that the number of RBs in a single PRB should be set to a value greater than P.

[0251] The following are examples of candidate values ​​(candidate values ​​for P) for the PRG size (number of consecutive RBs within a single PRB) that can be set for a UE.

[0252] - P is equal to one of the values ​​{2, 4, wideband}. That is, PRG size = {2, 4, wideband} - P is equal to one of the values ​​{4, wideband}. That is, PRG size = {4, wideband} - P is equal to one of the values ​​{2, wideband}. That is, PRG size = {2, wideband}

[0253] The value of P, i.e., the PRG size, may only be an even number.

[0254] This embodiment clarifies the restrictions / constraints / conditions on UL subband precoding (precoding granularity). For example, by following the DL PRG specifications, it is possible to suppress the impact on the specifications for UL PRG. The UE can appropriately control UL transmission in accordance with these constraints.

[0255] <Supplement> <<Notification of Information to UE>> In the embodiments described above, notification of any information from the Network (NW) (e.g., Base Station (BS)) to the UE (in other words, reception of any information from the BS at the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0256] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new Logical Channel ID (LCID) not defined in existing standards in the MAC subheader.

[0257] If the above notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble the Cyclic Redundancy Check (CRC) bits assigned to the DCI, or the format of the DCI.

[0258] Furthermore, the notification of arbitrary information to the UE in the above-described embodiment may be periodic, semi-persistent, or aperiodic.

[0259] <<Notification of Information from UE>> Notification of any information from the UE to the NW in the embodiments described above (in other words, transmission / reporting of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.

[0260] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new LCID not specified in existing standards in the MAC subheader.

[0261] If the above notice is made by the UCI, the notice may be transmitted using PUCCH or PUSCH.

[0262] Furthermore, the notification of any information from the UE in the above-described embodiment may be periodic, semi-persistent, or aperiodic.

[0263] <<Regarding the application of each embodiment>> In UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the embodiments described above may be applied (or used) if any or more of the following conditions are met: - A higher-layer parameter indicating the specific process / operation / control / assumption / information is set; - The specific process / operation / control / assumption / information is determined based on the relevant higher-layer parameter; - The specific process / operation / control / assumption / information is designated / activated / triggered by MAC CE / DCI / UCI / Resource / Channel / RS; - A specific UE capability indicating (or related to) the specific process / operation / control / assumption / information is reported or supported; - The application of the specific process / operation / control / assumption / information is determined based on specific conditions.

[0264] The specific UE capability may represent at least one of the following: supporting specific processing / operations / controls / information for at least one of the embodiments described above; supporting 1, 2, 4, 8TX UL transmission; supporting multiple different antenna layouts / numbers of antenna groups; supporting coherent groups; supporting coherent types (fully coherent / partially coherent / non-coherent); supporting a number of candidate precoders; and supporting wideband precoders / precoder cycling / subband precoders.

[0265] Furthermore, the above-mentioned specific UE capability may be a capability that applies across all frequencies (commonly regardless of frequency), a capability per frequency (e.g., one or a combination thereof, such as cell, band, band combination, BWP, component carrier, etc.), a capability per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), a capability per subcarrier spacing (SCS), or a capability per feature set (FS) or feature set per component-carrier (FSPC).

[0266] Furthermore, the specific UE capabilities described above may be capabilities that apply across all duplexing schemes (common to all duplexing schemes regardless of the duplexing scheme), or they may be capabilities specific to each duplexing scheme (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0267] If the above conditions are not met, UE / BS may follow the behavior specified in existing 3GPP releases.

[0268] (Note) The following inventions are added with respect to one embodiment of the present disclosure (first embodiment). [Note 1] A terminal having: a receiving unit that receives a setting relating to the granularity of a precoding resource group (PRG) for uplink (UL) transmission; and a control unit that controls the UL transmission for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink shared channel (PUSCH) based on the setting, wherein the size of the PRG is determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH. [Note 2] The terminal according to Note 1, wherein the size of a particular PRG in the BWP is determined based on at least one of the starting common resource block (starting CRB) and the number of RBs in the BWP. [Note 3] The terminal according to Note 1 or Note 2, wherein the size of a particular PRG in the PUSCH is determined based on at least one of the starting virtual resource block (starting VRB) and the number of RBs in the PUSCH. [Note 4] The terminal described in any of Notes 1 to 3, in which the first or last PRG size within the BWP or within the PUSCH is the same as or different from the other PRG sizes.

[0269] (Note) The following inventions are added with respect to one embodiment (second / third embodiment) of the present disclosure. [Note 1] A terminal having a control unit that controls processing related to subband precoding for an uplink shared channel (PUSCH), and a transmission unit that transmits the PUSCH, wherein the control unit performs a procedure for dividing a modulation symbol in a certain layer into a plurality of subgroups, or precoding for each subband. [Note 2] The terminal according to Note 1, wherein the control unit performs the precoding for each divided subgroup, and the number of subgroups and the number of subbands are the same. [Note 3] The terminal according to Note 1 or Note 2, wherein the modulation symbols precoded for each subband for each antenna port are mapped to virtual resource blocks (VRBs) for each subband in a specific order. [Note 4] The terminal according to any one of Notes 1 to 3, wherein the control unit performs subband precoding for all modulation symbols in a certain layer.

[0270] (Wireless Communication System) The configuration of a wireless communication system according to one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any of the wireless communication methods according to the above embodiments of this disclosure, or a combination thereof.

[0271] Figure 16 shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 (which may also be simply called system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc., as specified by the Third Generation Partnership Project (3GPP).

[0272] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0273] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the Secondary Node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0274] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0275] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.

[0276] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of Carrier Aggregation (CA) using multiple Component Carriers (CC) and Dual Connectivity (DC).

[0277] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz. Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be in a frequency band higher than FR2.

[0278] Furthermore, the user terminal 20 may communicate in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0279] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0280] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0281] The core network 30 may include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Multiple functions may be provided by a single network node. Furthermore, communication with an external network (e.g., the Internet) may occur via the DN.

[0282] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0283] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. 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-OFDM), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0284] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0285] In the wireless communication system 1, a Physical Downlink Shared Channel (PDSCH), a Broadcast Channel (PBCH), or a Physical Downlink Control Channel (PDCCH) may be used as the downlink channel, which is shared by each user terminal 20.

[0286] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0287] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

[0288] Lower-layer control information may be transmitted by PDCCH. The lower-layer control information may include, for example, Downlink Control Information (DCI) which includes scheduling information for at least one of PDSCH and PUSCH.

[0289] Furthermore, the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc., and the DCI that schedules PUSCH may be called UL grant, UL DCI, etc. Furthermore, PDSCH may be read as DL data, and PUSCH may be read as UL data.

[0290] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. A UE may monitor CORESETs associated with a given search space based on the search space configuration.

[0291] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0292] PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery acknowledgment information (for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0293] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted from the names of various channels.

[0294] 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, the DL-RS may include 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.

[0295] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0296] Furthermore, in the wireless communication system 1, the uplink reference signal (UL-RS) may include a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. The DMRS may also be called a user-specific reference signal (UE-specific Reference Signal).

[0297] (Base Station) Figure 17 shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission line interface 140 may be provided.

[0298] In this example, the functional blocks of the characteristic parts of this 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 part described below may be omitted.

[0299] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0300] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 120, transmitting / receiving antenna 130, and transmission path interface 140. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 120. The control unit 110 may also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of wireless resources, etc.

[0301] The transmitting / receiving 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 transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0302] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0303] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0304] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0305] The transmitting / receiving unit 120 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0306] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform processing on data and control information acquired from the control unit 110, for example, at the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), and the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), to generate a bit sequence to be transmitted.

[0307] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0308] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[0309] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 130.

[0310] The transmitting / receiving unit 120 (receiving 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 (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0311] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to 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 also measure received power (e.g., Reference Signal Received Power (RSRP)), reception 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.

[0312] The transmission path interface 140 may send and receive signals (backhaul signaling) with 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.

[0313] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0314] The transmitting / receiving unit 120 may transmit settings relating to the granularity of precoding resource groups (PRGs) for uplink (UL) transmission. Based on the settings, the control unit 110 may control the reception of the UL transmissions, which are controlled for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink shared channel (PUSCH). The size of the PRG may be determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH.

[0315] The transmitting / receiving unit 120 may transmit settings for processing related to subband precoding for the uplink shared channel (PUSCH). The control unit 110 may control the reception of the PUSCH. The settings may include a procedure for dividing modulation symbols in a certain layer into multiple subgroups, or settings related to precoding for each subband.

[0316] (User Terminal) Figure 18 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0317] In this example, the functional blocks of the characteristic parts of this 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 part described below may be omitted.

[0318] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0319] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0320] The transmitting / receiving 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 transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0321] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0322] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0323] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0324] The transmitting / receiving unit 220 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0325] The transmitting / receiving 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 and control information acquired from the control unit 210 to generate a bit sequence to be transmitted.

[0326] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0327] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0328] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

[0329] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0330] The transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0331] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also 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.

[0332] The measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources may be, for example, Non Zero Power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources may be at least one of the following: NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc. CSI-IM may also be called CSI-Interference Management (IM), and may be interpreted interchangeably with Zero Power (ZP) CSI-RS. In this disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc., may be interpreted interchangeably.

[0333] In this disclosure, the transmitting unit and receiving unit of the user terminal 20 may be composed of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0334] The transmitting / receiving unit 220 may perform at least one of the above-described transmitting / receiving unit processes.

[0335] The control unit 210 may perform at least one of the control unit processes described above.

[0336] (Hardware Configuration) The block diagram used in the description of the above embodiment shows functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0337] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0338] For example, a base station, user terminal, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 19 is a diagram showing an example of the hardware configuration of a base station and user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0339] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0340] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, the processing may be performed by one processor, or it may be performed by two or more processors simultaneously, sequentially, or by other means. Note that the processor 1001 may be implemented using one or more chips.

[0341] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or control at least one of reading and writing data in the memory 1002 and storage 1003.

[0342] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0343] Furthermore, the processor 1001 reads programs (program code), 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 accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. 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 other functional blocks may be implemented similarly.

[0344] The memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be called a register, cache, or main memory. The memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of the present disclosure.

[0345] The storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a Compact Disk (Compact Disc ROM (CD-ROM)), a Digital Use Disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. The storage 1003 may also be called an auxiliary storage device.

[0346] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitting / receiving unit 120 (220), transmitting / receiving antenna 130 (230), etc., may be implemented by the communication device 1004. The transmitting / receiving unit 120 (220) may be implemented with physically or logically separated transmitting unit 120a (220a) and receiving unit 120b (220b).

[0347] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0348] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0349] 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), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0350] (Variations) Terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0351] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist 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.

[0352] Here, the neurology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neurology may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0353] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). Alternatively, a slot may be a time unit based on neurology.

[0354] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using minislots may be called a PDSCH (PUSCH) mapping type B.

[0355] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0356] For example, one subframe may be called a TTI, or a plurality of consecutive subframes may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the existing LTE, or may be a period shorter than 1 ms (for example, 1 - 13 symbols), or may be a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, a mini-slot, etc. instead of a subframe.

[0357] Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in an LTE system, the base station performs scheduling to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI. Note that the definition of the TTI is not limited to this.

[0358] The TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, a codeword, etc., or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which a transport block, a code block, a codeword, etc. are actually mapped may be shorter than the TTI.

[0359] Note that when one slot or one mini-slot is called a TTI, one or more TTIs (that is, one or more slots or one or more mini-slots) may be the minimum time unit of scheduling. Also, the number of slots (mini-slots) constituting the minimum time unit of the scheduling may be controlled.

[0360] A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8 - 12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini - slot, a sub - slot, a slot, etc.

[0361] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be read as a TTI having a TTI length less than that of the long TTI and not less than 1 ms.

[0362] A resource block (Resource Block (RB)) is a resource allocation unit in the time domain and the frequency domain. In the frequency domain, it may include one or more consecutive sub - carriers (subcarriers). The number of sub - carriers included in an RB may be the same regardless of the numerology, for example, it may be 12. The number of sub - carriers included in an RB may be determined based on the numerology.

[0363] Also, an RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini - slot, 1 subframe, or 1 TTI. 1 TTI, 1 subframe, etc. may each be composed of one or more resource blocks.

[0364] Note that one or more RBs may be referred to as a physical resource block (Physical RB (PRB)), a sub - carrier group (Sub - Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0365] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0366] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. These common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. The PRBs may be defined and numbered within a given BWP.

[0367] A BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). One or more BWPs may be configured within a single carrier for a UE.

[0368] At least one of the configured BWPs may be active, and the UE does not need to assume that it will transmit or receive a predetermined signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0369] The structures of wireless frames, subframes, slots, minislots, and symbols described above are merely examples. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless 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, and the number of symbols, symbol length, and cyclic prefix (CP) length within the TTI can be varied in various ways.

[0370] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or corresponding other information. For example, wireless resources may be indicated by a predetermined index.

[0371] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements using these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0372] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0373] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0374] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

[0375] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification in this disclosure may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0376] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Elements (CEs).

[0377] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not notifying the specified information or by notifying other information).

[0378] The determination may be made by a value represented by one bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0379] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0380] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0381] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0382] In this disclosure, terms such as “precoding,” “precoder,” “weight (precoding weight),” “quasi-co-location (QCL),” “transmission configuration indication state (TCI state),” “spatial relation,” “spatial domain filter,” “transmit power,” “phase rotation,” “antenna port,” “layer,” “number of layers,” “rank,” “resource,” “resource set,” “beam,” “beam width,” “beam angle,” “antenna,” “antenna element,” “panel,” “UE panel,” “transmitting entity,” and “receiving entity” may be used interchangeably.

[0383] In this disclosure, "antenna port" may be interpreted interchangeably with "antenna port for any signal / channel" (e.g., a Demodulation Reference Signal (DMRS) port). In this disclosure, "resource" may be interpreted interchangeably with "resource for any signal / channel" (e.g., a reference signal resource, an SRS resource, etc.). Resources may include time / frequency / code / spatial / power resources. Furthermore, a spatial domain transmit filter may include at least one of a spatial domain transmit filter and a spatial domain receive filter.

[0384] The above group may include, for example, at least one of the following: a spatial relationship group, a code division multiplexing (CDM) group, a reference signal (RS) group, a control resource set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, or a panel group.

[0385] Furthermore, in this disclosure, terms such as beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, Codeword (CW), Transport Block (TB), and RS may be interpreted interchangeably.

[0386] Furthermore, in this disclosure, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc., may be interpreted interchangeably.

[0387] Furthermore, in this disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) properties," and "specific QCL type (e.g., Type A, Type D)" may be interpreted interchangeably.

[0388] In this disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, subset may be interpreted interchangeably.

[0389] Furthermore, the spatial relationship information Identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interpreted as mutually exclusive. "Spatial relationship information (TCI state)" may be interpreted as mutually exclusive as "a set of spatial relationship information (TCI state)," "one or more pieces of spatial relationship information," etc. TCI state and TCI may be interpreted as mutually exclusive. Spatial relationship information and spatial relationship may be interpreted as mutually exclusive.

[0390] In this disclosure, terms such as “Base Station (BS),” “wireless base station,” “fixed station,” “NodeB,” “eNB (eNodeB),” “gNB (gNodeB),” “access point,” “Transmission Point (TP),” “Reception Point (RP),” “Transmission / Reception Point (TRP),” “panel,” “cell,” “sector,” “cell group,” “carrier,” and “component carrier” may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0391] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can also provide communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services in this coverage.

[0392] In the present disclosure, the base station transmitting information to the terminal may be read as the base station instructing the terminal to perform control / operation based on the information, and vice versa.

[0393] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0394] A mobile station may also be called a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other appropriate terms.

[0395] 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 also be a device mounted on a moving object, the moving object itself, etc.

[0396] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0397] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does 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.

[0398] Figure 20 shows an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, a pneumatic pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0399] The drive unit 41 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0400] The electronic control unit 49 consists of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 installed in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0401] Signals from various sensors 50-58 include current signals from current sensor 50 for sensing motor current, rotational speed signals of front wheels 46 / rear wheels 47 acquired by rotational speed sensor 51, air pressure signals of front wheels 46 / rear wheels 47 acquired by air pressure sensor 52, vehicle speed signals acquired by vehicle speed sensor 53, acceleration signals acquired by acceleration sensor 54, accelerator pedal depression amount signals acquired by accelerator pedal sensor 55, brake pedal depression amount signals acquired by brake pedal sensor 56, operation signals of shift lever 45 acquired by shift lever sensor 57, and detection signals acquired by object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc.

[0402] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, display, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0403] The information service unit 59 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) or output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0404] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, 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 Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver assistance functions or autonomous driving functions.

[0405] 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 sends and receives data (information) via the communication port 63 to 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, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40.

[0406] 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 external devices. For example, it can send and receive various types of information to and from external devices 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. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it may function as at least one of the base station 10 and the user terminal 20).

[0407] The communication module 60 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include the information based on the above input.

[0408] The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 installed in the vehicle. The information service unit 59 may also be called an output unit, which outputs information (for example, it outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 60).

[0409] 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, axle 48, various sensors 50-58, etc., which are provided in the vehicle 40.

[0410] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this 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), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions of the base station 10 described above. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel, downlink channel, etc., may be interpreted as sidelink channel.

[0411] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0412] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes having base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0413] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements using exemplary order and are not limited to the specific order presented.

[0414] Each aspect / embodiment described in this disclosure is 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 (where x is, for example, an integer or decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, systems utilizing Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, and next-generation systems extended, modified, created, or defined based thereon may also be applied. Furthermore, multiple systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

[0415] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0416] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0417] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to mean judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0418] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0419] Furthermore, “judgment (decision)” may be considered as “judgment (decision)” of resolving, selecting, choosing, establishing, comparing, etc. In other words, “judgment (decision)” may be considered as “judgment (decision)” of some action. In this disclosure, “judgment (decision)” may be interpreted as mutually interchangeable with the actions described above.

[0420] Furthermore, in this disclosure, “determine / determining” may be interpreted as “assume / assuming,” “expect / expecting,” or “consider / considering.” In addition, in this disclosure, “not expecting to do…” may be interpreted as “expecting not to do….”

[0421] In this disclosure, "expect" may be interpreted as "be expected." For example, "expect(s) ..." (where "..." may be expressed as, for example, a that clause or an infinitive) may be interpreted as "be expected ...." Similarly, "does not expect ..." may be interpreted as "be not expected ...." Furthermore, "An apparatus A is not expected ..." may be interpreted as "An apparatus B other than apparatus A does not expect ..." (for example, if apparatus A is a UE, apparatus B may be a base station).

[0422] The term "maximum transmit power" as used in this disclosure may mean the maximum transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0423] As used in this disclosure, the terms “connected,” “coupled,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0424] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0425] In this 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 "combine" may be interpreted similarly to "different."

[0426] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0427] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0428] In this disclosure, "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, words meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. In addition, in this disclosure, words meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably with "i-th highest").

[0429] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0430] In this disclosure, phrases such as "when A, B", "if A, then B", "B upon A", "B in response to A", "B based on A", "B during / while A", "B before A", "B at (the same time as) / on A", "B after A", "B since A", and "B until A" may be interchangeable. Furthermore, A, B, etc., may be replaced with appropriate expressions such as nouns, gerunds, or regular sentences depending on the context. The time difference between A and B may be approximately zero (immediately after or immediately before). Additionally, a time offset may be applied to the time when A occurs. For example, "A" may be interpreted as "before / after the time offset when A occurs". The time offset (e.g., one or more symbols / slots) may be predetermined or determined by the UE based on notified information.

[0431] In this disclosure, timing, time, duration, time instance, any unit of time (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc., may be interpreted interchangeably.

[0432] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The descriptions herein are illustrative and not intended to be restrictive in any way to the invention described herein.

[0433] This application is based on Japanese Patent Application No. 2025-009985, filed on January 23, 2025. All of its contents are included herein.

Claims

1. A terminal comprising: a receiving unit that receives settings relating to the granularity of precoding resource groups (PRGs) for uplink (UL) transmission; and a control unit that controls the UL transmission for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink shared channel (PUSCH) based on the settings, wherein the size of the PRG is determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH.

2. The terminal according to claim 1, wherein the size of a particular PRG within the BWP is determined based on at least one of the starting common resource block (starting CRB) and the number of RBs within the BWP.

3. The terminal according to claim 1, wherein the size of a particular PRG within the PUSCH is determined based on at least one of the starting virtual resource block (starting VRB) and the number of RBs within the PUSCH.

4. The terminal according to claim 1, wherein the first or last PRG size within the BWP or within the PUSCH is the same as or different from the other PRG sizes.

5. A wireless communication method for a terminal, comprising the steps of: receiving a setting relating to the granularity of a precoding resource group (PRG) for uplink (UL) transmission; and controlling the UL transmission for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink shared channel (PUSCH) based on the setting, wherein the size of the PRG is determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH.

6. A base station comprising: a transmitting unit that transmits settings relating to the granularity of precoding resource groups (PRGs) for uplink (UL) transmission; and a control unit that controls the reception of UL transmissions controlled for each of a plurality of PRGs divided within a bandwidth portion (BWP) or an uplink sharing channel (PUSCH) based on the settings, wherein the size of the PRG is determined based on the number of resource blocks (RBs) in the BWP or the number of RBs in the PUSCH.

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