Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is characterized by being provided with: a transmission unit for transmitting a media access control element (MAC CE) including a power headroom (PHR) per serving cell or per panel when simultaneous transmission from an uplink (UL) of a plurality of panels is supported; and a control unit that controls transmission of the MAC CE on the basis of a specific condition. According to one embodiment of the present disclosure, transmission power control can be appropriately performed.

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized to achieve even higher data rates and lower latency (Non-Patent Document 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) has been standardized to further enhance the capacity and sophistication of LTE (Release 8 and 9 of the Third Generation Partnership Project (3GPP (registered trademark))).

[0003] Successor systems to LTE (also known as, for example, the fifth generation mobile communication system (5G), 5G+ (plus), the sixth generation mobile communication system (6G), New Radio (NR), and 3GPP Rel. 15 and later) are also being studied.

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems, UEs will be able to use one of multiple panels (or multiple beams) for uplink (UL) transmission. Furthermore, to improve UL throughput and reliability, research is underway to support simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL / sTxMP)) with more than one Transmission / Reception Point (TRP).

[0009] When supporting simultaneous UL transmission from multiple panels, the UE transmits UL signals from both panels simultaneously. However, the reporting and calculation of the PHR in this case remain unclear. For example, the events and conditions that trigger the PHR are unclear. This makes it difficult to properly control transmission, leading to concerns about reduced communication throughput.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately perform transmission power control.

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present disclosure is characterized by comprising: a sending unit that sends a medium access control control element (MAC CE) including a power headroom (PHR) for each serving cell or each panel while supporting simultaneous uplink (UL) transmission from multiple panels; and a control unit that controls the transmission of the MAC CE based on specific conditions.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, it is possible to appropriately perform transmission power control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figures 1A to 1C This is a diagram showing an example of PUSCH transmission using multiple panels.

[0016] Figure 2A 、 Figure 2B This is a diagram showing an example of PUCCH transmission using multiple panels.

[0017] Figure 3 This is a diagram showing an example of a single-entry PHR MAC CE in Rel.16 NR.

[0018] Figure 4This is a diagram showing an example of a multi-entry PHR MAC CE in Rel.16 NR.

[0019] Figure 5 This is a diagram showing an overview of PHR transmission.

[0020] 6A to 6D This is an example of a MAC CE for PHR according to the second embodiment.

[0021] Figure 7 This is a diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment.

[0022] Figure 8 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0023] Figure 9 This is a diagram showing an example of the configuration of a user terminal according to one embodiment.

[0024] Figure 10 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment.

[0025] Figure 11 This is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0026] (Multi-panel sending)

[0027] In Rel.15 and Rel.16 UEs, only one beam and panel is used for UL transmission at a time ( Figure 1A In Rel.17, to improve UL throughput and reliability, simultaneous UL transmission using multiple beams and multiple panels is being studied for one or more transmission / reception points (TRPs).

[0028] For simultaneous UL transmission using multiple beams and multiple panels, research is underway on reception based on one TRP with multiple panels ( Figure 1B ), or based on the reception of two TRPs with an ideal backhaul ( Figure 1C The use of a single PDCCH for scheduling multiple PUSCHs (e.g., simultaneous transmission of PUSCH#1 and PUSCH#2) is under study. Support for panel-specific transmission and the introduction of panel IDs is under study.

[0029] The base station may also configure or indicate panel-specific transmissions for UL transmissions using a UL Transmission Configuration Indication (TCI) or panel ID. UL TCI (UL TCI state) may also be based on signaling similar to the DL beam indication supported in Rel. 15. The panel ID may also be implicitly or explicitly applied to the transmission of at least one of a target RS resource or target RS resource set, PUCCH, SRS, or PRACH. If the panel ID is explicitly notified, it may also be configured in at least one of the target RS, target channel, or reference RS (e.g., DL RS resource configuration or spatial relationship information).

[0030] In simultaneous UL transmission using multiple panels, the UE can also transmit multiple physical uplink control channels (PUCCHs). The following options 1 and 2 are currently under consideration as transmission methods for simultaneous UL transmission using multiple panels for PUCCHs.

[0031] [Scheme 1]

[0032] The two PUCCH resources are transmitted simultaneously with an overlap in the time domain. Each of the two PUCCH resources is associated with a different panel / beam (see Figure 2A ). Each of the two beams is sent towards a different TRP.

[0033] [Scheme 2]

[0034] One PUCCH resource is sent simultaneously using two panels / spatial relationships. One PUCCH resource is associated with two panels / beams (refer to Figure 2B ). Each of the two beams is sent towards a different TRP.

[0035] Furthermore, although the example of the case where the number of multi-panels is two has been described, in the present disclosure, the number of panels may be 3 or more. In other words, the number of panels, 2, may be rewritten as 3 or more.

[0036] In addition, the solution 2 can also be applied to the repetition transmission (repetition) of the PUCCH in a single frequency network (SFN).

[0037] Furthermore, during simultaneous UL transmission using multiple panels, the UE can also transmit multiple physical uplink shared channels (PUSCHs). The following options 3-5 are currently under consideration as transmission methods for simultaneous UL transmission using multiple panels for PUSCHs.

[0038] [Scheme 3]

[0039] Space Division Multiplexing (SDM) based on single DCI (S-DCI):

[0040] In this approach, different layers / DMRS ports of a PUSCH are precoded separately and transmitted simultaneously from different UE beams / panels. Furthermore, support for two CWs (codewords) and simultaneous transmission from two different UE beams / panels are being considered for this approach.

[0041] [Scheme 4]

[0042] SFN method based on S-DCI:

[0043] In this approach, the same layer / DMRS port of one PUSCH is transmitted simultaneously from two different UE beams / panels.

[0044] [Scheme 5]

[0045] M-DCI PUSCH simultaneous transmission method:

[0046] In this method, two independent PUSCHs associated with different TRPs are transmitted simultaneously within the same active BWP. For example, the total number of layers of the two PUSCHs can be up to 4 layers. In addition, the number of layers of each of the two PUSCHs can be specified by the specification, for example, 1-3 layers, or a maximum of 2 layers.

[0047] (UL TCI status)

[0048] In Rel.16 NR, the use of the UL TCI status as a UL beam indication method is under study. Notification of the UL TCI status is similar to notification of the UE's DL beam (DL TCI status). Furthermore, the DL TCI status can also be overwritten with the TCI status used for PDCCH / PDSCH.

[0049] The channel / signal (also referred to as the target channel / RS) for which the UL TCI state is set (specified) may be, for example, at least one of PUSCH (DMRS of PUSCH), PUCCH (DMRS of PUCCH), random access channel (Physical Random Access Channel (PRACH)), SRS, etc.

[0050] In addition, the RS (source RS) that has a QCL relationship with the channel / signal can be, for example, a DL RS (for example, SSB, CSI-RS, TRS, etc.) or a UL RS (for example, SRS, SRS for beam management, etc.).

[0051] In the UL TCI state, the RS that is in a QCL relationship with the channel / signal can also be associated with the panel ID used to receive or transmit the RS. This association can be explicitly set (or specified) through higher-layer signaling (e.g., RRC signaling, MAC CE, etc.) or implicitly determined.

[0052] The correspondence between the RS and the panel ID may be included in the UL TCI status information or may be included in at least one of the resource setting information, spatial relationship information, etc. of the RS.

[0053] The QCL type represented by the UL TCI state can be either the existing QCL type AD or other QCL types, and can also include a specific spatial relationship, an associated antenna port (port index), etc.

[0054] If a panel ID is assigned for UL transmission (e.g., assigned via DCI), the UE may use the panel corresponding to the panel ID for the UL transmission. The panel ID may also be associated with the UL TCI state. When a UL TCI state is assigned (or activated) for a specific UL channel / signal, the UE may determine the panel to use for UL channel / signal transmission based on the panel ID associated with the UL TCI state.

[0055] (Transmit Power Control)

[0056] <PUSCH Transmit Power Control>

[0057] In NR (e.g., Rel. 16), the transmit power of the PUSCH can also be controlled based on a TPC command (also called a value, an increase or decrease value, a correction value, etc.) indicated by the value of a specific field (also called a TPC command field, etc.) in the DCI.

[0058] For example, when the UE uses a parameter set (open-loop parameter set) with an index j and a power control adjustment state with an index l to transmit a PUSCH on an activated UL BWP b of a carrier f of a serving cell c, the PUSCH transmission power (P PUSCH、b，f，c(i, j, q d , l)) can also be expressed by the following formula (1).

[0059]

[0060] Here, the power control adjustment state may be configured via higher-layer parameters to include multiple states (e.g., two states) or a single state. Furthermore, when multiple power control adjustment states are configured, one of the multiple power control adjustment states may be identified by an index l (e.g., l∈{0,1}). The power control adjustment state may also be referred to as a PUSCH power control adjustment state, a first state, a second state, or the like.

[0061] Furthermore, the PUSCH transmission opportunity i may be a specific period during which the PUSCH is transmitted, for example, composed of one or more symbols, one or more time slots, and the like.

[0062] In formula (1), P CMAX，f，c (i) For example, it is the transmission power (also called maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i. O_PUSCH，b，f，c (j) For example, parameters related to the target received power set for the activated UL BWP b of the carrier f of the serving cell c in the parameter set configuration j (for example, also referred to as parameters related to the transmit power offset, transmit power offset P0, target received power parameters, etc.).

[0063] M PUSCH RB，b，f，c (i) For example, the number of resource blocks (bandwidth) allocated to the PUSCH for transmission opportunity i in the active UL BWP b of the serving cell c and the carrier f with the subcarrier spacing μ. b，f，c (j) is a value provided by a higher-layer parameter (eg, also known as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0064] PL b，f，c (q d ) For example, the index q of the reference signal for downlink BWP (path loss reference RS, path loss measurement DL RS, PUSCH-PathlossReferenceRS) associated with the activated UL BWP b of carrier f of serving cell c used in the user terminal d Calculated path loss (path loss compensation).

[0065] ΔTF，b，f，c (i) is a transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f in serving cell c.

[0066] f b，f，c (i, l) represents the TPC command value (e.g., power control adjustment state, accumulated value of TPC commands, closed-loop value) based on the power control adjustment state index l for the activated UL BWP of carrier f for serving cell c and transmission opportunity i. L may also be referred to as a closed-loop index.

[0067] Alternatively, if the UE is not provided with a path loss reference RS (e.g., PUSCH-PathlossReferenceRS), or if the UE is not provided with dedicated higher layer parameters, the UE may use RS resources from the SSB used to obtain the Master Information Block (MIB) to calculate the PL. b，f，c (q d ).

[0068] Alternatively, when the UE is configured with a number of RS resource indices up to the value of the maximum number of path loss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRS), and a set of RS settings for each RS resource index based on the path loss reference RS, the set of RS resource indices may include one or both of a set of SS / PBCH block indices and a set of CSI-RS resource indices. The UE may also identify an RS resource index q within the set of RS resource indices. d .

[0069] In the case where PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE may also use the same RS resource index q as that used for the corresponding PRACH transmission. d .

[0070] Alternatively, when the UE is provided with a PUSCH power control configuration based on a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl), and when one or more values ​​of the path loss reference RS ID are provided, a mapping between a set of values ​​for the SRI field in DCI format 0_1 ​​and a set of path loss reference RS ID values ​​is obtained based on higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may also determine the RS resource index q based on the path loss reference RS ID mapped to the SRI field value in DCI format 0_1 ​​for scheduling the PUSCH. d .

[0071] Alternatively, when a PUSCH transmission is scheduled using DCI format 0_0 and the UE is not provided with the PUCCH spatial relationship information for the PUCCH resource with the lowest index corresponding to the activated UL BWP b for each carrier f and serving cell c, the UE uses the same RS resource index q as the PUCCH transmission within the PUCCH resource. d .

[0072] Alternatively, when PUSCH transmission is scheduled using DCI format 0_0 and the UE is not provided with a spatial setting for PUCCH transmission, or when PUSCH transmission is scheduled using DCI format 0_1 ​​that does not include an SRI field, or when the SRI-based PUSCH power control setting is not provided to the UE, the UE may also use the RS resource index q with the ID 0 of the path loss reference RS. d .

[0073] Alternatively, for PUSCH transmission configured by a configuration grant configuration (eg, ConfiguredGrantConfig), when the configuration grant configuration includes a specific parameter (eg, rrc-ConfiguredUplinkGrant), the RS resource index q d The path loss reference index (eg, pathlossReferenceIndex) is provided to the UE via a specific parameter.

[0074] Alternatively, for PUSCH transmission configured by configuring the permission configuration, if the permission configuration does not include a specific parameter, the UE determines the RS resource index q based on the value of the path loss reference RS ID mapped to the SRI field in the DCI format that activates PUSCH transmission. d In the case where the DCI format does not include the SRI field, the UE may also determine the RS resource index q with the path loss reference RS ID of 0. d .

[0075] <PUCCH Transmit Power Control>

[0076] In addition, in NR, the transmission power of PUCCH is controlled based on the TPC command (also called value, increase or decrease value, correction value, indication value, etc.) represented by the value of a specific field (also called TPC command field, first field, etc.) within the DCI.

[0077] For example, the PUCCH transmission power (P PUCCH、b，f，c (i,q u ,q d , l)) can also be expressed by the following formula (2).

[0078]

[0079] The power control adjustment state may also be referred to as a PUCCH power control adjustment state, a first state, a second state, or the like.

[0080] Furthermore, the PUCCH transmission opportunity i may be a specific period during which the PUCCH is transmitted, for example, composed of one or more symbols, one or more time slots, and the like.

[0081] In formula (2), P CMAX，f，c (i) For example, it is the transmission power (also called maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i. O_PUCCH，b，f，c (q u) For example, it is a parameter related to the target receiving power set for the activation UL BWP b of the carrier f of the service cell c in the transmission opportunity i (for example, also called a parameter related to the transmission power offset, the transmission power offset P0, or the target receiving power parameter, etc.).

[0082] M PUCCH RB，b，f，c (i) For example, the number of resource blocks (bandwidth) allocated to the PUCCH for transmission opportunity i in the activated UL BWP b of the serving cell c and the carrier f with a subcarrier spacing μ. b，f，c (q d ) For example, the index q of the reference signal for downlink BWP (path loss reference RS, path loss measurement DL RS, PUCCH-PathlossReferenceRS) associated with the activated UL BWP b of carrier f of serving cell c used in the user terminal d Calculated path loss.

[0083] Δ F_PUCCH (F) is a higher-layer parameter given for each PUCCH format. TF，b，f，c (i) is the transmission power adjustment component (offset) for the UL BWP b of the carrier f of the serving cell c.

[0084] g b，f，c (i, l) is the TPC command value (e.g., power control adjustment state, accumulated value of TPC commands, closed-loop value, PUCCH power adjustment state) of the power control adjustment state index l based on the activated UL BWP of carrier f in serving cell c and transmission opportunity i.

[0085] Alternatively, when the UE is provided with information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relationship information (PUCCH-SpatialRelationInfo), l = {0, 1}; when the UE is not provided with information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relationship information, l = 0.

[0086] When the UE receives a TPC command value from DCI format 1_0 or 1_1, and when the UE is provided with PUCCH spatial relationship information, the UE can also obtain the mapping between the PUCCH spatial relationship information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) based on the index provided by the PUCCH P0 ID (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). When the UE receives an activation command including the PUCCH spatial relationship information ID value, the UE can also determine the closed-loop index value provided with the value l by linking it with the corresponding PUCCH P0 ID.

[0087] The P corresponding to the PUCCH power adjustment state l of the UE's activated UL BWP b for the carrier f of the serving cell c is O_PUCCH，b，f，c (q u ) value is provided by the upper layer, g b，f，c (i, l) = 0, k = 0, 1, ..., i. In the case where the UE is provided with PUCCH spatial relationship information, the UE may also u The corresponding PUCCH is associated with the P0 ID and the closed-loop index value corresponding to l. u The value of l is determined by the value of .

[0088] q u It may be a PUCCH P0 ID (p0-PUCCH-Id) indicating PUCCH P0 (P0-PUCCH) within the PUCCH P0 set (p0-Set).

[0089] <SRS Transmit Power Control>

[0090] For example, using the index l of the power control adjustment state, the transmission power (P) of the Sounding Reference Signal (SRS) for the activated UL BWP b of the carrier f of the serving cell c in the SRS transmission occasion (also called transmission period, etc.) i is calculated. SRS、b，f，c (i,q s , l)) can also be expressed by the following formula (3).

[0091] The power control adjustment state may also be referred to as an SRS power control adjustment state, a value based on a TPC command, an accumulated value of TPC commands, a closed-loop based value, a first or second state, etc. L may also be referred to as a closed-loop index.

[0092] Furthermore, the SRS transmission opportunity i may be a specific period during which the SRS is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, or the like.

[0093]

[0094] In formula (3), P CMAX，f，c (i) For example, it is the UE maximum output power for carrier f of serving cell c in SRS transmission opportunity i. O_SRS，b，f，c (q s ) is activated by UL BWP b and SRS resource set q of carrier f in serving cell c s Parameters related to the target received power provided for p0 (provided by SRS-ResourceSet and SRS-ResourceSetId) (for example, also referred to as parameters related to the transmit power offset, transmit power offset P0, or target received power parameters, etc.).

[0095] M SRS，b，f，c (i) is the SRS bandwidth represented by the number of resource blocks corresponding to the SRS transmission opportunity i on the activated UL BWP b of the serving cell c and the carrier f with the subcarrier spacing μ.

[0096] α SRS，b，f，c (q s ) Activated UL BWP b and SRS resource set q for carrier f with serving cell c and subcarrier spacing μ s The corresponding α (e.g., alpha) is provided.

[0097] PL b，f，c (q d ) is the activated DL BWP and SRS resource set q for serving cell c s , using RS resource index q d The DL path loss estimate calculated by the UE is [dB]. RS resource index q d Is the same as SRS resource set q sThe associated path loss reference RS (DL RS for path loss measurement, for example, provided by pathlossReferenceRS) is an SS / PBCH block index (for example, ssb-Index) or a CSI-RS resource index (for example, csi-RS-Index).

[0098] h b，f，c (i, l) is the SRS power control adjustment state for the activated UL BWP and SRS transmission opportunity i for carrier f of serving cell c. If the SRS power control adjustment state setting (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for both SRS transmission and PUSCH transmission, h b，f，c (i, l) and the current PUSCH power control adjustment state f b，f，c (i, l) are the same.

[0099] The transmission opportunity i of PUSCH, PUCCH and SRS can also be determined by the time slot index n within the frame of the system frame number SFN. s，f μ , the first symbol S in the slot, and the number of consecutive symbols L. In the case of PUSCH transmission of repetition type B, the PUSCH transmission opportunity may also be a nominal repetition.

[0100] (Power requirements)

[0101] In NR, research is underway to address the issue of Maximum Permitted Exposure (MPE) (or electromagnetic power density exposure). For health and safety reasons, UEs are required to meet Federal Communications Commission (FCC) regulations regarding maximum radiation exposure to the human body.

[0102] For example, in Rel.15 NR, in order to limit exposure, the use of power management maximum power reduction (Power-management Maximum Power Reduction (P-MPR / PMPR), the maximum allowed UE output power reduction) is specified. For example, in the case of non-carrier aggregation (CA), the UE maximum output power P CMAX,f,c is set so that the corresponding P UMAX,f,c(Measured maximum output power, measured set maximum UE output power) satisfies the following equation (4).

[0103]

[0104] EIRP max Set to the maximum value of the corresponding measurement peak effective isotropic radiated power (EIRP). f,c Let P-MPR be a value indicating a reduction in the maximum output power allowed for carrier f in serving cell c. f,c The configured UE maximum output power P of carrier f introduced into serving cell c CMAX,f,c The corresponding total radiated power P TMAX,f,c Become a P TMAX,f,c ≤TRP max .

[0105] In the case of carrier aggregation (CA), the UE maximum output power P CMAX,f,c is set so that the corresponding P UMAX,f,c The following formula (5) is satisfied.

[0106]

[0107] The measured P for carrier aggregation UMAX Defined as P UMAX =Σ c,f(c) P UMAX,f,c Here, P UMAX,f,c is the measured power P of the carrier f = f(c) for the serving cell c UMAX,f,c The linear value of the carrier aggregation is the measured total radiated power P TMAX Defined as P TMAX =10log 10 Σ c,f(c) P TMAX,f,c Here, P TMAX is the total radiated power P of the carrier f = f(c) for the serving cell c TMAX,f,c The linear value of the measured value. Total radiated power P TMAX The boundary of P is determined to be TMAX ≤TRP max .

[0108] That is, the UE can set its maximum output power to P CMAX , so that the measured peak EIRP (P UMAX ) is within the range of the lower limit and the upper limit, the measured total radiated power P TMAX Satisfy PTMAX ≤TRP ma .

[0109] (Multiple TRPs)

[0110] In NR, one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (M-TRP)) are being studied for DL ​​transmission to the UE using one or more panels (Multi-panel). In addition, the UE is being studied for UL transmission using one or more TRPs.

[0111] However, in future wireless systems (e.g., NR after Rel.17), research is underway to use a single DCI (single DCI, S-DCI) for performing PUSCH repetitions for multiple TRPs (MTRP PUSCH repetition) to indicate multiple (e.g., two) SRS resource identifiers (SRS Resource Indicator (SRI))) / Transmitted Precoding Matrix Indicator (TPMI)).

[0112] For example, in the case of codebook-based transmission, the UE may determine the precoder for PUSCH transmission based on the SRI, Transmitted Rank Indicator (TRI), and TPMI. In the case of non-codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on the SRI. Furthermore, the SRI may be specified to the UE via DCI or via higher-layer parameters.

[0113] In the case where a single DCI indicates multiple SRI / TPMIs, consider the following option 1 or option 2;

[0114] Option 1: Use multiple (e.g., two) fields indicating SRI / TPMI to indicate SRI / TPMI (values) for multiple (e.g., two) TRPs.

[0115] Option 2: One field for indicating SRI / TPMI is indicated, and code points corresponding to multiple (for example, two) SRI / TPMI values ​​are set in the field indicating the SRI / TPMI.

[0116] In Option 1, each codepoint in multiple SRI / TPMI fields can correspond to a TPMI value. The correspondence (association) between SRI / TPMI fields and SRI / TPMI values ​​can also be predefined in the specification. Furthermore, the correspondence (association) between SRI / TPMI fields and SRI / TPMI values ​​can use the correspondence specified before Rel. 16 or after Rel. 17. The correspondence between SRI / TPMI fields and SRI / TPMI values ​​can also differ for each of the multiple SRI / TPMI fields.

[0117] In Option 2, a codepoint indicating one SRI / TPMI field may correspond to multiple (e.g., two) SRI / TPMI values. The correspondence (association) between the SRI / TPMI field and the SRI / TPMI value may be pre-defined in the specification or notified / set / activated via RRC signaling / MAC CE.

[0118] In addition, research is underway to dynamically indicate / switch between repeated PUSCH transmission using a single PUSCH transmission / single TRP (Single TRP (STRP)) and repeated PUSCH transmission using multiple TRPs (Multi TRP (MTRP)) via DCI. This dynamic switching can utilize specific fields included in DCI specified before Rel.16, or specific fields specified after Rel.17 (for example, fields for specifying STRP or MTRP operation).

[0119] Furthermore, "dynamic switching" in this disclosure may also mean "switching using at least one of higher-layer signaling and physical-layer signaling." Furthermore, "switching" in this disclosure may also be interchangeable with "switching," "changing," "changing," "applying," "instructing," "setting," and so on.

[0120] (PHR)

[0121] In future wireless communication systems (e.g., NR), the UE sends a Power Headroom (PH) report (Power Headroom Report (PHR)) to the network, which contains information about the power headroom (PH) of each serving cell. The network can use the PHR to control the UE's uplink transmit power.

[0122] In the case where M-TRP PUSCH is supported / configured / activated and reporting of two PHRs for two TRPs is configured / activated, including two PHRs (a first PHR and a second PHR) in the PHR MAC CE is under study. Reporting of two PHRs for two TRPs can also be configured for the UE via higher layer parameters (RRC parameters).

[0123] Here, the first PHR may be reported in the same manner as Rel. 15 / 16. The second PHR may be a PHR for a different TRP from the first PHR. The second PHR may be reported as either an actual PHR or a virtual PHR.

[0124] The actual PHR is based on the actual PUSCH transmission and may also be called the real PHR. The actual PHR may also be calculated based on the power control parameters used for the actual PUSCH transmission.

[0125] A virtual PHR is a PHR that is independent of actual PUSCH transmission (based on a reference PUSCH transmission). It can also be called a reference PHR or a PHR that follows a reference format. The virtual PHR can be calculated based on the default power control parameters specified in Rel.15 / 16 NR or based on new default power control parameters.

[0126] When the UE determines that the Type 1 power headroom report for the activated serving cell is based on the actual PUSCH transmission, the UE calculates the Type 1 power headroom report for PUSCH transmission opportunity i on the activated UL BWP b of carrier f of serving cell c as shown in the following equation (6). The PHR in equation (6) may also be referred to as the actual PHR.

[0127]

[0128] When the UE determines that the Type 1 power headroom report for the activated serving cell is transmitted based on the reference PUSCH, the UE calculates the Type 1 power headroom report for PUSCH transmission opportunity i on the activated UL BWP b of carrier f of serving cell c as shown in the following equation (7). The PHR in equation (7) is also called a virtual PHR.

[0129]

[0130] Here, for P CMAX，f，c (i) Upper horizontal line (in P CMAX，f，c (i) P is added to the upper part), assuming that MPR = 0dB, A-MPR = 0dB, P-MPR = 0dB, ΔT C = 0dB. A-MPR means Additional MPR. For the rest of the parameters, P O_PUSCH，b，f，c (j) and α b，f，c (j) Use P O_NOMINAL_PUSCH，f，c (0), p0-PUSCH-AlphaSetId=0, PL b，f，c (q d ) Use pusch-PathlossReferenceRS-Id=0, l=0.

[0131] (PHR MAC CE)

[0132] The PHR can also be sent via MAC (Medium Access Control) signaling using the PUSCH (Physical Uplink Shared Channel). For example, the PHR is notified using the PHR MAC CE (Control Element) included in the MAC PDU (Protocol Data Unit).

[0133] In NR, single entry PHR MAC CE associated with the Primary Cell (PCell) is supported.

[0134] Figure 3 This figure shows an example of a single-entry PHR MAC CE in Rel. 16 NR. This MAC CE consists of two octets (=16 bits). Figure 3 'R' respectively represents a 1-bit reserved field, for example, is set to a value of '0'.

[0135] Figure 3 The 'PH (Type 1, PCell)' field is a 6-bit field that indicates the index associated with the Type 1 PH of the Primary Cell (PCell). The index associated with the PH is associated with a specific PH value (in decibels (dB)) (or level).

[0136] In addition, for example, type 1 PH may be a PH that takes PUSCH into consideration (for example, only the power of PUSCH is considered), type 2 PH may be a PH that takes PUCCH into consideration (for example, the power of both PUSCH and PUCCH is considered), and type 3 PH may be a PH that takes into consideration a measurement reference signal (Sounding Reference Signal (SRS)) (for example, the power of PUSCH and SRS is considered).

[0137] Figure 3 'P CMAX，f，c ' represents a 6-bit field, indicating the P used for the calculation of the above PH field CMAX，f，c The related index. CMAX，f，c The relevant index is associated with the specific UE transmit power level (dB). CMAX，f，c It can also be referred to as the maximum transmission power (maximum allowed transmission power) set for the UE of the serving cell c of the carrier f. CMAX，f，c It can also be expressed as P CMAX , PCMAX, etc.

[0138] Figure 3 The 'P' in the field can be a field related to the Power Management Maximum Power Reduction (P-MPR) or the maximum allowed UE output power reduction for the serving cell c, or a field associated with the Maximum Permitted Exposure (MPE). Figure 3 The 'MPE' of the UE may also be a field associated with the MPE. The 'P', 'MPE' and other fields may also be rewritten as the 'R' field by configuring the UE using higher layer signaling.

[0139] The 'P' field is set to 0 if the P-MPR value applied to meet the MPE requirement is less than a specific P-MPR value (e.g., P-MPR_00) when MPE reporting in FR2 is set (higher layer parameter mpe-Reporting-FR2) and the serving cell operates in FR2, and is otherwise set to 1.

[0140] In addition, the 'P' field may also indicate whether power backoff is applied for power management when the MPE report of FR2 is not set or the serving cell operates in FR1. In addition, if power backoff is not applied for power management, the corresponding P CMAX In the case where the fields have different values, the 'P' field is set to 1.

[0141] The 'MPE' field may also indicate the power backoff applied to meet the MPE requirement when MPE reporting for FR2 is set (higher layer parameter mpe-Reporting-FR2), the serving cell operates in FR2, and the 'P' field is set to 1. This field may also indicate the index corresponding to the measured P-MPR value (e.g., in dB).

[0142] When the MPE report of FR2 is not configured, or the serving cell operates in FR1, or the 'P' field is set to 0, an R field (R bit) may exist instead of the 'MPE' field.

[0143] NR also supports multiple entry PHR MAC CEs (multiple entry PHR MAC CEs) containing multiple data similar to the single entry (two octets) described above. The multiple entry PHR MAC CE may also include PH fields for the Primary Secondary Cell (PSCell) and Secondary Cell (SCell). Furthermore, PCells and PSCells may also be referred to as Special Cells (SpCells).

[0144] Figure 4 This is a diagram showing an example of a multi-entry PHR MAC CE in Rel.16 NR. Figure 3 The same fields are not described repeatedly. Figure 4 The 6-bit field including the term 'PH' indicates the corresponding type (eg, types 1 to 3 described above) and the PH field for the cell.

[0145] Additionally, the presence of the Type 2 PH field for SpCells of other MAC entities may also be set by setting the higher layer parameter phr-Type2OtherCell to true.

[0146] Figure 4 The inclusion of 'P CMAX，f，c The 6-bit field of the term ' indicates the PH used in the calculation of the immediately preceding PH field. CMAX，f，c P CMAX，f，c field. Figure 4 'C i ' is a field indicating whether the PH field of the serving cell corresponding to the serving cell index i is included in the PHR. In addition, Figure 4The maximum serving cell index is less than 8. If it is greater than 8, the MAC CE may also include, for example, a serving cell index that can indicate a maximum of i=31. i ' field.

[0147] In addition, the number added to the "Serving Cell" in the PH field and the CMAX，f，c The number added to the field may not mean the serving cell index, but may only mean the number of values ​​included in the MAC CE.

[0148] Figure 4 The 'V' in the PH field indicates whether the PH value corresponding to the immediately following PH field is based on actual transmission (V = 0) or based on a reference format (V = 1). The PH based on the reference format can also be called a virtual PH. In addition, in the case of V = 1, the corresponding 'P CMAX，c The ' field, 'MPE' field, etc. can also be omitted.

[0149] The network may also send PHR configuration information related to PHR triggering conditions to the UE. Examples of PHR configuration information include a prohibit timer, a periodic timer, and a path loss change threshold (phr-Tx-PowerFactorChange). This notification may also utilize higher-layer signaling. The UE triggers a PHR when the PHR triggering conditions are met.

[0150] (Maximum transmit power)

[0151] The maximum transmission power (maximum transmission power) P in panel p of carrier f of serving cell c is shown. CMAXpanel，f，c，p Example of setting. CMAXpanel，f，c，p It can also be expressed as P CMAX，f，c，p ).

[0152] Option 0

[0153] The UE may also receive settings related to the maximum transmit power for each serving cell and each carrier (e.g., the same settings as Rel. 17), and determine the maximum transmit power for each panel based on these settings. For example, the maximum transmit power of carrier f in serving cell c is set to P CMAX，f，c , UE can be based on the P CMAX，f，c To determine the maximum transmission power P of each panel p CMAX，f，c，p , or based on P CMAX，f，c With P CMAX，f，c，p The maximum transmission power P of each panel p is determined by the relationshipCMAX，f，c，p The P CMAX，f，c This relationship can also be set to the UE through higher layer signaling / physical layer signaling. The following example is given regarding the maximum transmission power of each panel in this case.

[0154] Option 0-1

[0155] The UE can also determine the maximum transmission power P of panel p based on the following formula (8): CMAX，f，c，p N is the number of panels that are instructed to transmit simultaneously. That is, the maximum transmission power of each panel can also be the same.

[0156]

[0157] For example, when multiple panels are instructed to transmit simultaneously, N may be 2. When a single panel is instructed to transmit simultaneously, N may be 1. Alternatively, N may be based on a value set by the network (base station) via higher-layer signaling / physical layer signaling, and at least one of the UE's capabilities. Different values ​​may be applied to N for single-panel transmission and multi-panel transmission. Alternatively, N may be the maximum number of panels supported by the UE in UL transmission (e.g., N = 2), and the application of single-panel transmission or simultaneous multi-panel transmission may not be indicated by the network.

[0158] Option 0-2

[0159] The UE can also determine the maximum transmission power P of panel p based on the following formula (9): CMAX，f，c，p In other words, the sum of the maximum transmit powers of each panel p can also be the maximum transmit power of the UE. Np can also be a value for panel p, which is different for each panel. In other words, the maximum transmit power of each panel can also be different.

[0160]

[0161] Np may also follow at least one of a value set by the network (base station) via higher layer signaling / physical layer signaling and UE capabilities. Different values ​​may be applied to Np in the case of single-panel transmission and in the case of multi-panel transmission.

[0162] Options 0-3

[0163] The UE can also determine the maximum transmission power P of panel p based on the following formula (10): CMAX，f，c，p That is, the sum of the maximum transmit powers of each panel p can also be the maximum transmit power of the UE. In this case, the maximum transmit powers of each panel can be the same or different, and the maximum transmit powers of some panels can also be the same.

[0164]

[0165] As a result, the maximum transmit power in panel p, the maximum transmit power of the entire panel, and their relationship become clear, and the UE can use appropriate transmit power to control simultaneous UL transmission of multiple panels.

[0166] (Report of M-TRP PHR of Rel.17)

[0167] In the repetition of the M-TRP PUSCH of Rel. 17, when the PHR MAC CE is reported in time slot n, the first PHR for the first TRP is reported in the same manner as Rel. 16. The second PHR for the second TRP is defined as follows (1) to (3).

[0168] (1) When the first PHR is the actual PHR and the repetition of the PUSCH associated with the second TRP is in time slot n, the second PHR is the actual PHR.

[0169] (2) When the first PHR is an actual PHR and the PUSCH associated with the second TRP is repeatedly not in time slot n, the second PHR is a virtual PHR.

[0170] (3) When the first PHR is a virtual PHR, the second PHR is also a virtual PHR.

[0171] The virtual PHR may also be calculated using the default power control parameters (p0, alpha (α), PL-RS, closedloopindex) for each TRP.

[0172] When the UE is provided with twoPHRMode in the activated UL BWP b of carrier f of serving cell c, and two SRS resource sets whose usage is set to "codebook" or "non-codebook" are provided via srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, the UE provides the following two first power headroom reports (1) and (2). In (1) and (2), it is assumed that the UE provides the first type 1 PHR for the actual PUSCH repetition that starts the earliest PUSCH transmission in the time slot associated with one SRS resource set.

[0173] (1) When the UE transmits a PUSCH repetition associated with another SRS resource set in time slot n, the UE provides a second type 1 power headroom report for the first actual PUSCH repetition associated with the other SRS resource set overlapping with time slot n.

[0174] (2) If not (in case the condition of (1) is not satisfied), the UE provides a second type 1 power headroom report for a reference PUSCH transmission associated with other SRS resource sets.

[0175] (UE capabilities, etc.)

[0176] In this disclosure, "panel" may also refer to a value (a set of values) of a UE capability, similar to Rel. 17. Furthermore, "panel" may also have the same definition as other terms such as "UE antenna group."

[0177] A beam can also represent a spatial relationship / TCI / Spatial Relation Information (SRI). A TRP can also refer to a CORESETPool / SRS resource set.

[0178] In Simultaneous multi-panel Tx (STxMP), the following method can also be applied.

[0179] Single DCI (S-DCI) Space Division Multiplexing (SDM): Different layers / DMRS ports of a PUSCH are precoded separately and transmitted simultaneously from different UE beams / panels.

[0180] S-DCI frequency division multiplexing (FDM)-A: Different parts of the frequency domain resources of one PUSCH transmission opportunity are transmitted from different UE beams / panels.

[0181] S-DCI FDM-B mode: A mode in which two PUSCH transmission opportunities with the same / different RVs of the same TB are sent from different UE beams / panels on non-overlapping frequency domain resources and the same time domain resources.

[0182] S-DCI SFN-based transmission method: The same PUSCH / DMRS is transmitted simultaneously from two different UE beams / panels.

[0183] S-DCI spatial domain repetition scheme: Two PUSCH transmission opportunities with different redundancy versions (RV) of the same TB are transmitted from two different UE beams / panels on the same time and frequency resources.

[0184] M-DCI mode: A mode in which two overlapping PUSCHs (completely / partially overlapping in the time domain, completely / partially overlapping or non-overlapping in the frequency domain) are transmitted from two different UE beams / panels.

[0185] In simultaneous multi-panel transmission, multiple TPRs are assumed, and one panel corresponds to one TRP. Therefore, in this disclosure, the PUSCH associated with a panel can also be referred to as the PUSCH associated with the TRP, and the PHR / power of the panel can be referred to as the PHR / power of the TRP.

[0186] In the present disclosure, it is considered that a UE receives PUSCH / SRS on one panel and receives PUCCH / SRS on time resources of other panels that completely / partially overlap with PUSCH reception (simultaneous multi-panel reception).

[0187] The "single-panel transmission" in this disclosure can also be applied only when there is a PUSCH transmission with a single panel, and there is no PUCCH / SRS transmission in other panels on time resources that fully / partially overlap with the PUSCH transmission. In addition, in this case, how to handle PHR reporting, for example, reporting one Type 1 PHR based on PUSCH and one Type 3 PHR based on SRS in the case of PUSCH+SRS, requires further study.

[0188] Alternatively, the "single-panel transmission" in the present disclosure may also be applied to the situation where there is a PUSCH transmission with a single panel, and there is a PUCCH / SRS transmission with some other panel on time resources that completely / partially overlap with the PUSCH transmission.

[0189] (Concept of simultaneous UL transmission of multiple panels)

[0190] In the case of simultaneous UL transmission of multiple panels, if the limitation of the maximum UL transmission power is taken into consideration, at least one of the following assumptions 1-1 to 1-3 is assumed.

[0191] [Scenario 1-1]

[0192] Consider the maximum UL transmission power of each panel. Assume that the actual transmission power of PUSCH / PUCCH / SRS of panel p in serving cell c is less than the maximum UL transmission power of panel p in serving cell c. That is, P panel_actual,c,p ≤P panel_max,c,pThe maximum UL transmission power of panel p in serving cell c can also be calculated using any of the above equations (8) to (10) for maximum transmission power. Furthermore, when the carrier is not determined, the element of carrier f can be removed.

[0193] P panel_actual,c,p is the actual transmission power of serving cell c and panel p, P panel_max,c,p is the maximum UL transmit power of serving cell c and panel p.

[0194] [Scenario 1-2]

[0195] Consider the maximum UL transmission power of each cell. Assume that the total actual transmission power of PUSCH / PUCCH / SRS from multiple panels of serving cell c is less than the maximum UL transmission power of serving cell c. That is, Σ p P panel_actual,c,p ≤P cell_max,c Established.

[0196] In addition, the maximum UL transmission power of the serving cell c may also be the value determined in Rel.17 (ie, P CMAX,f,c ).

[0197] P panel_actual,c,p is the actual transmission power of panel p in serving cell c, P cell_max,c is the maximum UL transmit power of serving cell c.

[0198] [Scenarios 1-3]

[0199] It is also possible to consider both the maximum UL transmission power per panel and the maximum transmission power per cell. The transmission power may also satisfy both assumptions 1 and 2.

[0200] (Concept of single-panel UL transmission)

[0201] In the case of supporting dynamic switching between single-panel transmission and multi-panel simultaneous transmission, considering the limitation of the maximum UL transmission power, at least one of the following assumptions 2-1 and 2-2 is assumed.

[0202] [Scenario 2-1]

[0203] Consider the maximum UL transmission power of each panel. Assume that the actual transmission power of PUSCH / PUCCH / SRS transmitted by a single panel of panel p in serving cell c is less than the maximum UL transmission power of panel p in serving cell c. That is, P panel_actual,c,p ≤P panel_max,c,p Established.

[0204] P panel_actual,c,pis the actual transmission power of serving cell c and panel p, P panel_max,c,p is the maximum UL transmit power of serving cell c and panel p.

[0205] [Scenario 2-2]

[0206] Consider the maximum UL transmission power of each cell. Assume that the total actual transmission power of PUSCH / PUCCH / SRS from a single panel of serving cell c is less than the maximum UL transmission power of serving cell c. That is, P panel_actual,c,p ≤P cell_max,c In addition, the maximum UL transmission power of the serving cell c may also be the value determined in Rel.17 (ie, P CMAX,f,c ).

[0207] P panel_actual,c,p is the actual transmission power of panel p in serving cell c, P cell_max,c is the maximum UL transmit power of serving cell c.

[0208] In addition, in the case of single-panel delivery, if P panel_max,c,p 、P cell_max,c If they are the same, then scenario 2-1 and scenario 2-2 are the same.

[0209] (PHR trigger)

[0210] In existing specifications (e.g., Rel. 17), PHR can also be triggered based on at least one of the following events / conditions:

[0211] When the prohibit timer (phr-ProhibitTimer) of the PHR expires / has expired and the MAC entity has UL resources for new transmissions, the path loss change of at least one reference signal used as a path loss reference for an activated serving cell corresponding to any MAC entity for which the DL BWP is not a dormant BWP exceeds a specific threshold (phr-Tx-PowerFactorChange (dB)) since the last transmission of the PHR in the MAC entity.

[0212] When the PHR periodic timer (phr-PeriodicTimer) expires.

[0213] When the PHR function is configured / reconfigured by higher layer signaling (this higher layer signaling may not be used to deactivate the PHR function).

[0214] When the SCell corresponding to the MAC entity configured with UL whose firstActiveDownlinkBWP-Id is not set to a dormant BWP is activated.

[0215] When SCG is activated.

[0216] Except when the SCG is deactivated, when a PSCell is added (ie, when a PSCell is newly added / changed).

[0217] When the PHR prohibit timer (phr-ProhibitTimer) expires / the timer has expired, and the MAC entity has UL resources for new transmission, the activated serving cell corresponding to any MAC entity configured with UL meets the following conditions.

[0218] In this cell (the activated serving cell), there are UL resources allocated for transmission / PUCCH transmission, and the requested power backoff value for power management corresponding to this cell has changed by more than a specific threshold (phr-Tx-PowerFactorChange (dB)) since the last PHR transmission.

[0219] When the SCell corresponding to any MAC entity configured with UL is switched from an activated dormant BWP to a non-dormant BWP.

[0220] When the higher-layer parameter mpe-Reporting-FR2 is set, the MPE prohibit timer (mpe-ProhibitTimer) is not executed.

[0221] • After the last transmission of the PHR in a certain MAC entity, the measured value of the PMPR applied to satisfy the MPE requirement in FR2 is greater than a specific threshold (mpe-Threshold) for at least one activated FR2 serving cell.

[0222] If the PMPR measurement used to meet the FR2 MPE requirement for at least one activated FR2 serving cell has changed by more than a specified threshold (phr-Tx-PowerFactorChange (dB)) since the last PHR sent by a MAC entity. In this case, the PHR may also be referred to as an "MPE P-MPR report."

[0223] (analyze)

[0224] Analysis 1

[0225] As mentioned above, the application of Simultaneous Multi-Panel Tx (STxMP) to PUSCH is under study. For example, when STxMP is configured for a serving cell, the event or condition that triggers a PHR is unclear.

[0226] Analysis 2

[0227] Furthermore, as a scenario where simultaneous multi-panel transmission is applied, the single-DCI (S-DCI) / multi-DCI (M-DCI) scenario is envisioned. In particular, in the multi-DCI scenario, if non-ideal backhaul is considered, the PHR reports for the two TRPs may be present in different MAC CEs. In this case, it is unclear whether the UE can send PHRs separately to the two TRPs.

[0228] As described above, if the control method related to PHR is unclear, transmission control cannot be performed appropriately, and there is a possibility that communication throughput will be reduced.

[0229] Therefore, the inventors of the present invention have devised a method for controlling a PHR according to the application scenario.

[0230] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the respective embodiments may be applied individually or in combination.

[0231] (Various rewrites, etc.)

[0232] In the present disclosure, "A / B" and "at least one of A and B" may be replaced with each other. In addition, in the present disclosure, "A / B / C" may also mean "at least one of A, B, and C."

[0233] In the present disclosure, the words “notify,” “activate,” “deactivate,” “instruct (or specify),” “select,” “configure,” “update,” and “determine” may be used interchangeably. In the present disclosure, the words “support,” “control,” “controllable,” “operate,” and “operable” may also be used interchangeably.

[0234] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IEs), and settings may also be overwritten. In this disclosure, Medium Access Control (MAC) Control Elements (CEs), update commands, and activation / deactivation commands may also be overwritten.

[0235] In the present disclosure, high-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (for example, positioning protocol (for example, NR Positioning Protocol A / LTE Positioning Protocol (NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP))) messages, etc., messages from the core network), or any one of them, or a combination thereof.

[0236] In the present disclosure, MAC signaling may include, for example, a MAC Control Element (MACCE) and a MAC Protocol Data Unit (PDU). Broadcast information may include, for example, a Master Information Block (MIB), a System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), and other system information (Other System Information (OSI)).

[0237] In the present disclosure, the physical layer signaling may also be, for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI)), etc.

[0238] In the present disclosure, an index, an identifier (ID), a pointer, a resource ID, etc. may also be overwritten with each other. In the present disclosure, a sequence, a list, a set, a group, a group, a cluster, a subset, etc. may also be overwritten with each other.

[0239] In the present disclosure, panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmitting entity, transmission / reception point (TRP): transmission / reception point, base station, spatial relation information (SRI)), spatial relation, SRS resource indicator (SRI), control resource set (CORESET), physical downlink shared channel (PDSCH), codeword (CW), transport block (TB), reference signal (RS), antenna port (e.g., demodulation reference signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink shared channel (PDSCH), codeword (CW), transport block (TB), reference signal (RS), antenna port (e.g., demodulation reference signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink control Channel (PUCCH) group, PUCCH resource group), resources (e.g., reference signal resources, SRS resources), resource sets (e.g., reference signal resource sets), CORESET pool, downlink transmission configuration indication state (Transmission Configuration Indication state (TCI state)) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL)), QCL assumptions, etc. can also be rewritten with each other.

[0240] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) can be overwritten. "Spatial relationship information" can also be overwritten with "a collection of spatial relationship information," "one or more spatial relationship information," and so on. TCI states and TCIs can also be overwritten.

[0241] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) can also be overwritten. "Spatial relationship information" can also be overwritten with "a collection of spatial relationship information," "one or more spatial relationship information," and so on. TCI states and TCIs can also be overwritten.

[0242] In this disclosure, "multi-panel simultaneous transmission" (simultaneous multi-panel transmission) and "multi-panel simultaneous UL transmission" (simultaneous multi-panel UL transmission) can also be overwritten. In this disclosure, "supported" and "set / indicated" can also be overwritten. In this disclosure, "loop," "power control loop," "power control loop index," "closed loop," "open loop," and "power control adjustment state" can also be overwritten. In this disclosure, "transmit power" and "output power" can also be overwritten.

[0243] The power limit in the present disclosure may also refer to a limit based on the maximum transmit power. The PHR in the present disclosure may also refer to an actual PHR, a virtual PHR, or both, unless otherwise specified. The p and q in the present disclosure may also refer to panel indices.

[0244] In the present disclosure, multiple TRPs (MTRP, M-TRP), multiple TRP systems, multiple TRP transmissions, and multiple PDSCHs can also be rewritten with each other.

[0245] In the present disclosure, "PHR", "PH", "PH field", "PH value", etc. can also be mutually replaced. In addition, in the present disclosure, the PH field can also be mutually replaced with a PH field of a certain type (for example, type 1 / 2 / 3 / X).

[0246] In addition, in the present disclosure, the PHR MAC CE may also include a field for each of a plurality of serving cells (PCMAX field, P field, etc.).

[0247] In addition, the "PCMAX field / P-MPR value / power backoff value of the PH field ( / used / corresponding)" in the present disclosure can also be rewritten with the "PCMAX field / P-MPR value / power backoff value of the PUSCH sending ( / used / corresponding) corresponding to the PH field".

[0248] In the present disclosure, the P-MPR, the P-MPR value, and the power backoff value may also be overwritten with each other.

[0249] In the present disclosure, UL transmission (UL Tx) / PHR associated with the panel and UL transmission (ULTx) / PHR associated with the TRP can also be overwritten with each other.

[0250] (Wireless Communication Method)

[0251] <First embodiment>

[0252] The first embodiment corresponds to Analysis 1, and relates to events / conditions for triggering PHR in simultaneous multi-panel transmission of PUSCH.

[0253] In this disclosure, the simultaneous multi-panel transmission of PUSCH can be applied to each of the above-mentioned schemes. In the following description, different schemes can also be applied for each option. The scheme to be applied for each option can be pre-defined in the specification, set through higher-layer signaling, or reported by the UE capability.

[0254] For example, in simultaneous multi-panel transmission based on a single DCI, the triggering / reporting (transmission) method for PHR can be similar to the repetition method for multiple TRPs based on a single DCI. In simultaneous multi-panel transmission based on a single DCI, UL transmission is scheduled (separately) for both sides of the multiple TRPs using a single DCI to take into account the ideal backhaul. Therefore, the same method as the repetition method for multiple TRPs based on a single DCI can be used.

[0255] On the other hand, in simultaneous multi-panel transmission based on multiple DCIs, a separate PHR triggering / reporting (transmission) method can also be applied. In simultaneous multi-panel transmission based on multiple DCIs, due to consideration of non-ideal backhaul, UL transmissions corresponding to each TRP are scheduled using the DCI corresponding to each TRP. Therefore, each TRP may require a specific PHR. In other words, triggering / reporting (transmission) of a PHR for each TRP can also be supported.

[0256] In the present disclosure, simultaneous multi-panel transmission of PUSCH configured in the serving cell, two codebook (CB) / non-codebook (NCB) SRS resource sets configured in the serving cell, and certain higher layer parameters configured in the serving cell may also be overwritten.

[0257] The event / condition for triggering a PHR for the serving cell may also be at least one of the following options 1 and 2. Specifically, option 1 may also be applicable to simultaneous multi-panel transmission based on a single DCI, and option 2 may also be applicable to simultaneous multi-panel transmission based on multiple DCIs. Furthermore, the application of option 1 / option 2 may also be switched based on higher layer signaling / physical layer signaling.

[0258] [Option 1]

[0259] Option 1 describes the conditions for triggering a PHR for each serving cell. A PHR is triggered when a specific event occurs in a serving cell. The triggering conditions / events for a PHR in a serving cell configured for simultaneous multi-panel transmission of a PUSCH may be at least one of the following:

[0260] Option 1.1

[0261] Option 1.1 involves a prohibit timer for the PHR (phr-prohibitTimer).

[0262] Alt.1: The phr-prohibitTimer can be set for each serving cell. A PHR can be triggered when the phr-prohibitTimer of a serving cell expires or has expired.

[0263] Alt.2: phr-prohibitTimer can be set per panel / TRP.

[0264] Alt.2-1: PHR may be triggered when all Phr-ProhibitTimers (eg, two) of each panel / TRP set in the serving cell expire / have expired.

[0265] Alt.2-2: PHR may be triggered when the phr-ProhibitTimer of any one of the two panels / TRPs configured in the serving cell expires / has expired.

[0266] Alt.2-3: PHR may be triggered when the phr-ProhibitTimer of a specific one of the two panels / TRPs configured in the serving cell (eg, the initial panel / TRP) expires / has expired.

[0267] Option 1.2

[0268] Option 1.2 involves (variation of) path loss.

[0269] Alt.1: PHR may be triggered in case the path loss has changed exceeding a certain threshold (phr-Tx-PowerFactorChange) in two (both) panels / TRP / reference signals of the serving cell.

[0270] Alt.2: PHR may be triggered when the path loss has changed by more than a certain threshold (phr-Tx-PowerFactorChange) in either of the two panels / TRPs / reference signals corresponding to the serving cell.

[0271] Alt.3: PHR may be triggered when the path loss has changed by more than a specific threshold (phr-Tx-PowerFactorChange) in a specific one of the two panels / TRP / reference signals corresponding to the serving cell (e.g., the initial panel / TRP / reference signal).

[0272] Variant: A specific threshold (phr-Tx-PowerFactorChange) can also be set per panel / TRP / reference signal.

[0273] Option 1.3

[0274] Option 1.3 involves a periodic timer for the PHR (phr-PeriodicTimer).

[0275] Alt.1: phr-PeriodicTimer can be set for each serving cell. PHR can be triggered when the phr-PeriodicTimer of the serving cell expires / has expired.

[0276] Alt.2:phr-PeriodicTimer can be set per panel / TRP.

[0277] Alt.2-1: PHR may be triggered if all phr-PeriodicTimers (eg, two) of each panel / TRP set in the serving cell expire / have expired.

[0278] Alt.2-2: PHR may be triggered when the phr-PeriodicTimer of any one of the two panels / TRPs configured in the serving cell expires / has expired.

[0279] Alt.2-3: PHR may be triggered when the phr-PeriodicTimer of a specific one of the two panels / TRPs configured in the serving cell (eg, the initial panel / TRP) expires / has expired.

[0280] Option 1.4

[0281] Option 1.4 involves (variations of) Power-management Maximum Power Reduction (PMPR).

[0282] Alt.1: PMPR can be set for each serving cell. A PHR can be triggered if the requested power backoff value based on the serving cell's power management (defined by the specification and permitted by the PMPR corresponding to a serving cell) changes (has changed) by more than a certain threshold (phr-Tx-PowerFactorChange).

[0283] Alt.2: PMPR can be set for each panel / TRP.

[0284] Alt.2-1: PHR may be triggered when the required power backoff value based on the power management of the serving cell in both panels / TRPs corresponding to the serving cell has changed (has changed) by more than a specific threshold (phr-Tx-PowerFactorChange).

[0285] Alt.2-2: PHR may be triggered when the required power backoff value based on the power management of the serving cell changes (has changed) by more than a specific threshold (phr-Tx-PowerFactorChange) in either of the two panels / TRPs corresponding to the serving cell.

[0286] Alt.2-3: PHR may be triggered when a required power backoff value based on power management of the serving cell changes (has changed) by more than a specific threshold (phr-Tx-PowerFactorChange) in a specific one of the two panels / TRPs corresponding to the serving cell (e.g., the first panel / TRP).

[0287] Variant: A specific threshold (phr-Tx-PowerFactorChange) can also be set per panel / TRP.

[0288] Option 1.5

[0289] Option 1.5 relates to the MPE prohibition timer (mpe-ProhibitTimer). When mpe-Reporting-FR2 is set, at least one of the following conditions may apply.

[0290] Alt.1: The mpe-ProhibitTimer can be set for each serving cell. A PHR can be triggered even when the mpe-ProhibitTimer in the serving cell is not running.

[0291] Alt.2: mpe-ProhibitTimer can be set per panel / TRP.

[0292] Alt.2-1: All mpe-ProhibitTimers (eg, two) per panel / TRP that may be set in the serving cell are not running to trigger a PHR.

[0293] Alt.2-2: The mpe-ProhibitTimer of any of the two panels / TRPs that can be set in the serving cell does not trigger a PHR when it is not running.

[0294] Alt.2-3: The mpe-ProhibitTimer of a specific one of the two panels / TRPs that may be set in the serving cell (eg, the initial panel / TRP) does not trigger the PHR when it is not running.

[0295] Option 1.6

[0296] Option 1.6 relates to PMPR for FR2 MPE. When mpe-Reporting-FR2 is set, at least one of the following conditions may apply.

[0297] Alt.1: PMPR can be set for each serving cell. PHR can be triggered when the measured value of PMPR applied to meet the FR2 MPE requirements specified in the specification exceeds a specific threshold (mpe-Threshold).

[0298] Alt.2: PMPR can be set for each panel / TRP.

[0299] Alt.2-1: PHR may be triggered when the measured value of the PMPR in both panels / TRPs corresponding to the serving cell is above a specific threshold (mpe-Threshold).

[0300] Alt.2-2: PHR may be triggered when the measured value of the PMPR is above a specific threshold (mpe-Threshold) in any one of the two panels / TRPs corresponding to the serving cell.

[0301] Alt.2-3: PHR may be triggered when the measured value of the PMPR is above a specific threshold (mpe-Threshold) in a specific one of the two panels / TRPs corresponding to the serving cell (eg, the first panel / TRP).

[0302] Variant: A specific threshold (mpe-Threshold) can also be set per panel / TRP.

[0303] Option 1.7

[0304] Option 1.7 relates to (variations in) PMPR for FR2 MPE. When mpe-Reporting-FR2 is set, at least one of the following conditions may apply.

[0305] Alt.1: PMPR can be set for each serving cell. A PHR is triggered when the measured value of the PMPR applied to meet the FR2 MPE requirements specified in the specification changes (has changed) by more than a specific threshold (phr-Tx-PowerFactorChange).

[0306] Alt.2: PMPR can be set for each panel / TRP.

[0307] Alt.2-1: PHR may be triggered when the measured value of the PMPR has changed by more than a specific threshold (phr-Tx-PowerFactorChange) in both panels / TRPs corresponding to the serving cell.

[0308] Alt.2-2: PHR may be triggered when the measured value of the PMPR in any of the two panels / TRPs corresponding to the serving cell changes (has changed) by more than a specific threshold (phr-Tx-PowerFactorChange).

[0309] Alt.2-3: PHR may be triggered when the measured value of the PMPR in a specific one of the two panels / TRPs corresponding to the serving cell (eg, the first panel / TRP) has changed by more than a specific threshold (phr-Tx-PowerFactorChange).

[0310] Variant: A specific threshold (phr-Tx-PowerFactorChange) can also be set per panel / TRP.

[0311] [Option 2]

[0312] Option 2 describes the conditions for triggering a PHR for each panel / TRP of a serving cell. The PHR is triggered when a specific event occurs in a certain panel / TRP of a serving cell. The triggering conditions / events for the PHR in a panel / TRP of a serving cell configured for simultaneous multi-panel transmission of the PUSCH can be at least one of the following:

[0313] Alt.1: phr-prohibitTimer can be set for each panel / TRP. PHR can be triggered when the phr-prohibitTimer set in the panel / TRP expires / has expired.

[0314] Alt.2: PHR can be triggered if the path loss has changed exceeding a specific threshold (phr-Tx-PowerFactorChange) corresponding to the panel / TRP.

[0315] Variant: phr-Tx-PowerFactorChange can be set per panel / TRP.

[0316] Alt.3: phr-PeriodicTimer can be set for each panel / TRP. PHR can be triggered when the phr-PeriodicTimer set in the panel / TRP expires / has expired.

[0317] Alt.4: PMPR can be set per panel / TRP. PHR can be triggered when the required power backoff value for panel / TRP-based power management has changed beyond a specific threshold (phr-Tx-PowerFactorChange).

[0318] Variant: phr-Tx-PowerFactorChange can be set per panel / TRP.

[0319] Alt.5: When mpe-Reporting-FR2 is set.

[0320] The mpe-ProhibitTimer can be set for each panel / TRP. A PHR can be triggered even if the mpe-ProhibitTimer set for each panel / TRP is not running.

[0321] Alt.6: When mpe-Reporting-FR2 is set.

[0322] PMPR can be set for each panel / TRP. PHR can be triggered when the measured PMPR value applied to meet the FR2 MPE requirements specified in the standard exceeds a specific threshold (mpe-threshold).

[0323] Variant: mpe-Threshold can be set per panel / TRP.

[0324] Alt.7: When mpe-Reporting-FR2 is set.

[0325] The PHR may be triggered when the measured value of the PMPR has changed by more than a specific threshold (phr-Tx-PowerFactorChange).

[0326] Variant: A specific threshold (phr-Tx-PowerFactorChange) can also be set per panel / TRP.

[0327] According to the first embodiment described above, the UE can appropriately control the execution (triggering) of the PHR during simultaneous multi-panel transmission of the PUSCH.

[0328] <Second embodiment>

[0329] The second embodiment corresponds to Analysis 2 and involves simultaneous multi-panel transmission based on multiple DCIs, and particularly describes the MAC CE for PHR.

[0330] In the present disclosure, the above-mentioned schemes can be applied to the simultaneous multi-panel transmission of PUSCH. For example, for a serving cell, when simultaneous multi-panel transmission of PUSCH based on multiple DCIs is configured, the above-mentioned scheme 5 can be applied.

[0331] In the present disclosure, the serving cell is set to transmit multiple panels of PUSCH simultaneously based on multiple DCIs, the serving cell is set to two codebook (CB) / non-codebook (NCB) SRS resource sets, the serving cell is set to two CORESETPoolIndex and the two CORESETPoolIndex are associated with the two codebook (CB) / non-codebook (NCB) SRS resource sets, and the serving cell is set to certain (certain) high-level parameters which can also rewrite each other.

[0332] In the present disclosure, MAC CE for PHR, PHR MAC CE, single-entry PHR MAC CE, and MAC CE may also be rewritten with each other.

[0333] [Implementation Method 2.1]

[0334] In Embodiment 2.1, a specific example of a MAC CE for PHR (PHR MAC CE) is described. Figure 5 This is a diagram showing an overview of PHR transmission. The UE may also receive settings related to the transmission power limit for each panel / each cell when supporting simultaneous uplink (UL) transmission from multiple panels. Figure 5 As shown, based on the configuration, the UE controls the transmission (reporting) of at least one of a power headroom (PHR) based on actual PUSCH transmission (first PHR / actual PHR) and a PHR independent of actual PUSCH transmission (second PHR / virtual PHR). The aforementioned limit may also be the maximum UL transmit power, for example, the maximum UL transmit power per panel. Furthermore, the UE may determine the maximum UL transmit power based on its capabilities. Furthermore, at least one of the first PHR and the second PHR may be transmitted on a single panel.

[0335] The PHR may also be transmitted through MAC signaling using the PUSCH. For example, the PHR may be notified using a PHR MAC CE (Control Element) included in a MAC PDU.

[0336] In NR, single entry PHR MAC CE associated with the Primary Cell (PCell) is supported.

[0337] 6A to 6DThis is an example of a MAC CE for a PHR according to the second embodiment. A single MAC CE (a single-entry PHR MAC CE) can include the PHR corresponding to a single panel / TRP of a serving cell. The panel / TRP for which the PHR is included in a MAC CE can be distinguished by using different logical channel IDs (LCIDs) or indications in the MAC CE fields. The bit counts for each field shown below are examples only.

[0338] like Figure 6A As shown, the MAC CE may also consist of one octet (=8 bits). 'R' indicates a 1-bit reserved field, for example, set to a value of '0'. 'TRP ID' indicates a 1-bit field, for example, set to a value of '0' / '1'.

[0339] 'PH (power headroom)' may represent a 6-bit field. This field may represent an index related to the PH of a serving cell. For example, Figure 3 , 4, etc., this field may indicate an index associated with each type of PH of a cell (e.g., PCell / SpCell). The index associated with the PH may be associated with a specific PH value (in decibels (dB)) (or level).

[0340] like Figure 6B As shown, the MAC CE may also consist of two octets (=16 bits). The MAC CE may further include the PMPR / P CMAX Related fields.

[0341] Figure 6B The 'PMPR' of the 2-bit field may be a field related to the Power Management Maximum Power Reduction (P-MPR) of the serving cell c. CMAX ' can represent a 6-bit field. This field can represent the P used for the calculation of the above PH field CMAX，f，c The related index. CMAX，f，c The relevant index is associated with the specific UE transmit power level (dB). CMAX，f，c It can also be referred to as the set maximum transmit power (maximum allowed transmit power) of the UE serving cell c for carrier f. In this disclosure, P CMAX，f，c It can also be represented simply as P CMAX , PCMAX, etc.

[0342] In addition, if Figures 6C to 6D As shown, the MAC CE may also include a 'V' field instead of an 'R'. 'V' may represent a 1-bit field. This field indicates whether the reported PHR is an actual PHR or a virtual PHR. For example, if this field is set to a value of '0', the reported PHR indicates an actual PHR, and if this field is set to a value of '1', the reported PHR indicates a virtual PHR.

[0343] In addition, the MAC CE shown in FIG6 is only an example and can be used with the above Figure 3 , MAC CE of 4 is appropriately rewritten.

[0344] [Implementation Method 2.2]

[0345] In embodiment 2.2, the transmission conditions of the above-mentioned PHR MAC CE are described.

[0346] In the serving cell, when the aforementioned one MAC CE includes PHRs corresponding to one / two panels / TRPs, the UE may also control the transmission of the MAC CE based on the following conditions. The following describes the conditions when one MAC CE includes PHRs corresponding to one panel / TRP in Option 1, and the conditions when one MAC CE includes PHRs corresponding to two panels / TRPs in Option 2.

[0347] <Option 1>

[0348] In a serving cell, when a MAC CE includes a PHR corresponding to a panel / TRP (TRP#X), the UE may also control the transmission of the MAC CE based on at least one of the above conditions. In other words, the transmission of the MAC CE may also be controlled based on at least one of the following conditions.

[0349] In case the MAC entity has UL resources associated with the corresponding TRP (TRP#X), the MAC CE may be sent to the corresponding TRP (TRP#X).

[0350] When the MAC entity has UL resources associated with the corresponding TRP (TRP#X) and UL resources associated with another TRP (TRP#Y), the MAC CE can be controlled and transmitted according to any of the following Alt.1-3.

[0351] Alt.1: MAC CE is only sent to the corresponding TRP (TRP#X).

[0352] Alt.2: MAC CE is sent to the corresponding TRP (TRP#X) and also to other TRPs (TRP#Y).

[0353] Alt.3: Whether the MAC CE is sent to which TRP or to both TRPs may be determined by the UE implementation.

[0354] When the MAC entity has UL resources associated with another TRP (TRP#Y), the MAC CE may be controlled to be transmitted according to any one of the following Alt. 1-3.

[0355] Alt.1: MAC CE is sent (only) to other TRP (TRP#Y).

[0356] Alt.2: MAC CE is not sent.

[0357] Alt.3: Whether MAC CE is sent may be determined by the UE implementation.

[0358] Option 2

[0359] In a serving cell, when a MAC CE includes PHRs corresponding to two panels / TRPs (TRP#X), the UE may also control the transmission of the MAC CE based on at least one of the above conditions. In other words, the transmission of the MAC CE may also be controlled based on at least one of the following conditions.

[0360] When the MAC entity has UL resources associated with two (two) TRPs (TRP#X, #Y), the transmission of the MAC CE may be controlled according to any one of the following Alt. 1-4.

[0361] Alt.1: The MAC CE is sent to only one TRP (either TRP #X or #Y). The TRP to which the MAC CE is sent may be determined by the UE implementation.

[0362] Alt.2: The MAC CE is sent to only one TRP (either TRP #X or #Y). The TRP to which the MAC CE is sent can be selected by specific rules (based on specification definitions) or network settings (based on settings / instructions in higher-layer signaling or physical layer signaling).

[0363] Alt.3: MAC CE is sent to two (two) TRPs (TRP #X, #Y).

[0364] Alt.4: Whether the MAC CE is sent to one TRP (either TRP#X or TRP#Y) or to two TRPs (TRP#X or TRP#Y) may be determined by the UE implementation.

[0365] According to the second embodiment described above, the UE can appropriately transmit / report the PHR using the MAC CE.

[0366] <Supplement>

[0367] [Notification of Information to UE]

[0368] In the above-mentioned embodiment, the notification of arbitrary information (from the network (NW)) (e.g., the base station (BS))) to the UE (in other words, the reception of arbitrary information from the BS in the UE) can also be performed using physical layer signaling (e.g., DCI), high-layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signals) or a combination thereof.

[0369] When the above notification is performed through a MAC CE, the MAC CE may be identified by including a new logical channel ID (Logical Channel ID (LCID)) not specified in existing specifications in the MAC subheader.

[0370] In the case where the above-mentioned notification is performed through DCI, the above-mentioned notification may also be performed through a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used in scrambling of a Cyclic Redundancy Check (CRC) bit assigned to the DCI, the format of the DCI, and the like.

[0371] Furthermore, the notification of arbitrary information to the UE in the above-mentioned embodiments may be performed periodically, semi-continuously, or aperiodically.

[0372] [Notification of information from UE]

[0373] The notification of arbitrary information from the UE (to the NW) in the above-mentioned embodiment (in other words, the sending / reporting of arbitrary information from the UE to the BS) can also be carried out using physical layer signaling (e.g., UCI), high-layer signaling (e.g., RRC signaling, MACCE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals) or a combination thereof.

[0374] When the above notification is performed through MAC CE, the MAC CE can also be identified by including a new LCID that is not specified in the existing specifications in the MAC subheader.

[0375] When the notification is performed using UCI, the notification may be transmitted using PUCCH or PUSCH.

[0376] Furthermore, the notification of arbitrary information from the UE in the above-mentioned embodiments may be performed periodically, semi-continuously, or aperiodically.

[0377] [Regarding the application of each embodiment]

[0378] At least one of the above embodiments may also be applied to a situation where a specific condition is satisfied. The specific condition may be specified in a specification or may be notified to the UE / BS using higher layer signaling / physical layer signaling.

[0379] At least one of the above-mentioned embodiments may also be applied only to UEs that report a specific UE capability (UE capability) or support the specific UE capability.

[0380] The specific UE capability may also indicate at least one of the following:

[0381] Supporting specific processing / operation / control / information for at least one of the above embodiments.

[0382] UE supports simultaneous sending and receiving of multiple panels.

[0383] The UE supports reporting / sending of PHR related to simultaneous transmission and reception of multiple panels.

[0384] • The UE supports power limitation per panel or power limitation per cell for simultaneous multi-panel transmission.

[0385] The UE supports power limits per panel or per cell for single-panel transmission (when supporting simultaneous multi-panel transmission).

[0386] The UE supports reporting two PHRs for two panels for one serving cell.

[0387] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across the entire frequency (commonly regardless of the frequency), or capabilities for each frequency (for example, one or a combination of cells, bands, band combinations, BWPs, component carriers, etc.), or capabilities for each frequency range (for example, Frequency Range 1 (FR1)), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or capabilities for each subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities for each feature set (FS) or feature set per component carrier (FSPC)).

[0388] Furthermore, the specific UE capability may be a capability applied across all duplex modes (common regardless of the duplex mode) or a capability for each duplex mode (eg, time division duplex (TDD) or frequency division duplex (FDD)).

[0389] Furthermore, at least one of the above-described embodiments may also be applied to a case where specific information associated with the above-described embodiments is configured / activated / triggered by the UE (or an action of the above-described embodiments is performed) through higher layer signaling / physical layer signaling. For example, the specific information may be information indicating activation of PHR reporting / transmission (PHR triggering), arbitrary RRC parameters for a specific release (e.g., Rel. 18 / 19), and the like.

[0390] The UE may also apply operations such as Rel.15 / 16 when it does not support at least one of the above-mentioned specific UE capabilities or is not configured with the above-mentioned specific information.

[0391] (Note)

[0392] Regarding one embodiment (first embodiment) of the present disclosure, the following inventions are described.

[0393] [Note 1]

[0394] Terminal, with:

[0395] a transmitting unit that transmits a physical uplink shared channel (PUSCH) using simultaneous uplink (UL) transmission from multiple panels; and

[0396] The control unit controls triggering of a power headroom (PHR) sent based on the PUSCH based on a specific condition.

[0397] [Supplementary Note 2]

[0398] The terminal described in Note 1,

[0399] The specific condition is associated with a prohibit timer of the PHR or maximum permissible exposure (MPE).

[0400] [Note 3]

[0401] The terminal described in Note 1 or Note 2,

[0402] The specific condition is related to a change in path loss or power management maximum power reduction (PMPR) of a corresponding reference signal.

[0403] [Supplementary Note 4]

[0404] The terminal described in any one of Notes 1 to 3,

[0405] The control unit controls the triggering of the PHR per serving cell or per panel.

[0406] (Note)

[0407] Regarding one embodiment (second embodiment) of the present disclosure, the following inventions are added.

[0408] [Note 1]

[0409] Terminal, with:

[0410] a transmitting unit, which transmits a Medium Access Control Control Element (MAC CE) including a Power Headroom (PHR) for each serving cell or each panel when uplink (UL) simultaneous transmission from multiple panels is supported; and

[0411] The control unit controls the sending of the MAC CE based on specific conditions.

[0412] [Supplementary Note 2]

[0413] The terminal described in Note 1,

[0414] The MAC CE includes at least one of a field related to maximum power and a field indicating whether it is an actual PHR or a virtual PHR.

[0415] [Note 3]

[0416] The terminal described in Note 1 or Note 2,

[0417] The specific condition is based on the presence or absence of UL resources associated with the corresponding panel.

[0418] [Supplementary Note 4]

[0419] The terminal described in any one of Notes 1 to 3,

[0420] The control unit determines the panel to send the MACCE based on the presence or absence of UL resources associated with the corresponding panel.

[0421] (Wireless Communication System)

[0422] The following describes a configuration of a wireless communication system according to an embodiment of the present disclosure. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof.

[0423] Figure 7 This figure shows an example of a schematic configuration of a wireless communication system according to one embodiment. Wireless communication system 1 (also referred to simply as system 1) may be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth-generation mobile communication system New Radio (5GNR), or the like.

[0424] In addition, the wireless communication system 1 may also support dual connectivity between multiple radio access technologies (Radio Access Technologies (RATs)) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may also 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.

[0425] 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.

[0426] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both the MN and the SN are NR base stations (gNB)).

[0427] The wireless communication system 1 may also include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are deployed within the macrocell C1 and form small cells C2 that are narrower than the macrocell C1. User terminals 20 may also be located within at least one of the cells. The arrangement and number of cells and user terminals 20 are not limited to those shown in the figure. Hereinafter, when not distinguishing between base stations 11 and 12, they are collectively referred to as base stations 10.

[0428] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0429] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). Macrocell C1 may be included in FR1, and small cell C2 may be included in FR2. For example, FR1 may be a frequency band below 6 GHz (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). The frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may correspond to a frequency band higher than FR2.

[0430] Furthermore, in each CC, the user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0431] Multiple base stations 10 may be connected via wired (e.g., optical fiber based on the Common Public Radio Interface (CPRI), an 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 functions as a host station, may be referred to as an Integrated Access Backhaul (IAB) donor, and base station 12, which functions as a relay station (relay), may be referred to as an IAB node.

[0432] The base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0433] The core network 30 may also include network functions (NFs), such as the 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). Furthermore, a single network node may provide multiple functions. Furthermore, communication with external networks (e.g., the Internet) may be performed via the DN.

[0434] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0435] In the wireless communication system 1 , a radio access scheme based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), or single carrier frequency division multiple access (SC-FDMA) may be used.

[0436] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1 , other radio access schemes (eg, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0437] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20 , a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0438] In addition, as uplink channels, the wireless communication system 1 can also use an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc.

[0439] The PDSCH transmits user data, higher-layer control information, and the System Information Block (SIB). The PUSCH also transmits user data and higher-layer control information. The PBCH also transmits the Master Information Block (MIB).

[0440] The PDCCH may also transmit lower layer control information, which may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.

[0441] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0442] PDCCH detection also utilizes a control resource set (CORESET) and a search space. A CORESET corresponds to the resources for searching for DCI. A search space corresponds to the search area and search method for PDCCH candidates. A CORESET can be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space configuration.

[0443] A search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. Furthermore, the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and so on, used in this disclosure, may be interchangeable.

[0444] The PUCCH can also transmit uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH can also transmit the random access preamble used to establish a connection with a cell.

[0445] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “Physical” at the beginning.

[0446] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), and the like may also be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), and a phase tracking reference signal (PTRS) may also be transmitted as DL-RS.

[0447] For example, a synchronization signal may be at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block containing SSs (PSS, SSS) and PBCHs (and DMRS for the PBCH) may also be referred to as an SS / PBCH block or an SS block (SSB). Furthermore, SSs and SSBs may also be referred to as reference signals.

[0448] In addition, wireless communication system 1 may also transmit a sounding reference signal (SRS) or a demodulation reference signal (DMRS) as an uplink reference signal (UL-RS). DMRS is also called a user terminal-specific reference signal (UE-specific Reference Signal).

[0449] (Base Station)

[0450] Figure 8 This figure illustrates an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission path interface (transmission line interface) 140. Furthermore, one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140 may be provided.

[0451] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0452] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0453] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. It may also control transmission, reception, and measurement using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transceiver unit 120. The control unit 110 may also perform call processing (e.g., setup and release) of communication channels, manage the status of the base station 10, and manage radio resources.

[0454] Transmitter / receiver unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. Baseband unit 121 may also include a transmit processing unit 1211 and a receive processing unit 1212. Transmitter / receiver unit 120 may include a transmitter / receiver, RF circuits, baseband circuits, filters, phase shifters, measurement circuits, transmit / receive circuits, and the like, as described based on common knowledge in the technical fields involved in this disclosure.

[0455] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0456] The transmitting and receiving antenna 130 can be formed of an antenna described based on common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0457] The transmitting and receiving unit 120 may also transmit the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the aforementioned uplink channel, uplink reference signal, etc.

[0458] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0459] The transmitting and receiving unit 120 (transmitting processing unit 1211) may also perform processing on the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on the data and control information obtained from the control unit 110, to generate a bit string to be transmitted.

[0460] The transmitting and receiving unit 120 (transmitting processing unit 1211) may also perform transmission processing such as channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion, etc. on the bit sequence to be transmitted, and output a baseband signal.

[0461] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0462] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filtering, and demodulation into baseband signals on the radio frequency band signals received via the transmitting and receiving antenna 130 .

[0463] The transmitting and receiving unit 120 (receiving processing unit 1212) may also apply receiving processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0464] The transmitting / receiving unit 120 (measuring unit 123) may also perform measurements related to received signals. For example, the measuring unit 123 may perform radio resource management (RRM) measurements and channel state information (CSI) measurements based on the received signals. The measuring unit 123 may also measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), and propagation path information (e.g., CSI). The measurement results may also be output to the control unit 110.

[0465] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30 (for example, the network node providing NF), other base stations 10, etc., and can also obtain and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0466] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0467] Furthermore, the transceiver 120 may receive a physical uplink shared channel (PUSCH) transmitted from a terminal using simultaneous uplink (UL) transmissions from multiple panels. The transceiver 120 may also transmit configuration information for controlling the triggering of a power headroom (PHR) signal transmitted based on the PUSCH.

[0468] The transmitting and receiving unit 120 may also receive a Medium Access Control Control Element (MAC CE) including a power headroom (PHR) for each serving cell or each panel when supporting simultaneous uplink (UL) transmission from multiple panels.

[0469] The control unit 110 may also control the terminal to receive the MAC CE determined based on specific conditions.

[0470] (User Terminal)

[0471] Figure 9 This figure 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. Furthermore, more than one of each of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0472] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0473] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0474] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmission and reception unit 220.

[0475] The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0476] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit or may be composed of a transmitting unit and a receiving unit. The transmitting unit may also be composed of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0477] The transmitting and receiving antenna 230 can be formed of an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0478] The transmitting and receiving unit 220 may also receive the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the aforementioned uplink channel, uplink reference signal, etc.

[0479] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0480] The transmitting and receiving unit 220 (transmitting processing unit 2211 ) may also perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data and control information obtained from the control unit 210 to generate a bit sequence to be transmitted.

[0481] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be transmitted, and output a baseband signal.

[0482] Furthermore, whether or not to apply DFT processing may also be determined based on the transform precoding configuration. For a particular channel (e.g., PUSCH), if transform precoding is enabled, the transceiver unit 220 (transmit processing unit 2211) may perform DFT processing as part of the aforementioned transmission process in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transceiver unit 220 (transmit processing unit 2211) may perform DFT processing as part of the aforementioned transmission process.

[0483] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0484] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 230 .

[0485] For the obtained baseband signal, the transmitting and receiving unit 220 (receiving processing unit 2212) can also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing to obtain user data, etc.

[0486] The transmitting / receiving unit 220 (measuring unit 223) may also perform measurements related to received signals. For example, the measuring unit 223 may also perform RRM measurements and CSI measurements based on the received signals. 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), and other information. The measurement results may also be output to the control unit 210.

[0487] In addition, the measurement unit 223 may also derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources may also be, for example, non-zero power (NZP) CSI-RS resources. In addition, the measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources may also be at least one of NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, and the like. In addition, CSI-IM may also be referred to as CSI-Interference Management (IM) and may be interchangeable with Zero Power (ZP) CSI-RS. In addition, in the present disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeable.

[0488] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0489] In addition, the transmitting and receiving unit 220 may also transmit a physical uplink shared channel (PUSCH) using uplink (UL) transmissions from multiple panels simultaneously.

[0490] The transmitting and receiving unit 220 may also transmit a Medium Access Control Control Element (MAC CE) including a power headroom (PHR) for each serving cell or each panel when supporting simultaneous uplink (UL) transmission from multiple panels.

[0491] The control unit 210 may also control the triggering of a power headroom (PHR) signaled based on the PUSCH based on a specific condition. The specific condition may be related to a prohibit timer for the PHR or maximum permitted exposure (MPE). The specific condition may be related to a change in path loss or power management maximum power reduction (PMPR) of a corresponding reference signal. The control unit 210 may also control the triggering of the PHR on a per-serving cell or per-panel basis.

[0492] The control unit 210 may also control the transmission of the MAC CE based on a specific condition. The MAC CE includes at least one of a field related to maximum power and a field indicating whether it is an actual PHR or a virtual PHR. The specific condition may be based on the presence or absence of UL resources associated with the corresponding panel. The control unit 210 may also determine the panel to transmit the MAC CE based on the presence or absence of UL resources associated with the corresponding panel.

[0493] (Hardware structure)

[0494] Furthermore, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, the implementation method of each functional block is not particularly limited. Specifically, each functional block can be implemented using a single device that is physically or logically combined, or by connecting two or more physically or logically separate devices directly or indirectly (e.g., by wired or wireless connections) to implement these multiple devices. A functional block can also be implemented by combining one or more of these devices with software.

[0495] Here, the term "function" includes, but is not limited to, judging, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that implements a transmitting function may also be referred to as a transmitting unit, a transmitter, or the like. Any of these terms are as described above, and their implementation methods are not particularly limited.

[0496] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 10 This figure shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. The base station 10 and user terminal 20 described above can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0497] In this disclosure, the terms "device," "circuit," "equipment," "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 figures, or may exclude some of the devices.

[0498] For example, although only one processor 1001 is shown, multiple processors may be provided. Furthermore, processing may be performed by a single processor, or by two or more processors simultaneously, sequentially, or using other methods. Furthermore, processor 1001 may be implemented using more than one chip.

[0499] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or by controlling at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0500] Processor 1001 controls the entire computer by, for example, operating an operating system. Processor 1001 may also be comprised of a central processing unit (CPU) including interfaces with peripheral devices, a control device, a computing device, registers, and the like. For example, at least a portion of the aforementioned control unit 110 (210) and transceiver unit 120 (220) may also be implemented by processor 1001.

[0501] 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 based on these programs. As a program, a program that causes a computer to execute at least a portion of the operations described in the above embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and executed by the processor 1001, and the other functional blocks can also be implemented similarly.

[0502] Memory 1002 may also be a computer-readable recording medium, such as at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other suitable storage medium. Memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), or the like. Memory 1002 can store executable programs (program code), software modules, and the like for implementing the wireless communication method according to an embodiment of the present disclosure.

[0503] Storage 1003 may also be a computer-readable recording medium, such as at least one of a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM))), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, stick, or key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0504] The communication device 1004 is hardware (a transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network. For example, it is also referred to as a network device, a network controller, a network card, a communication module, etc. In order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the aforementioned transmitting and receiving unit 120 (220) and the transmitting and receiving antenna 130 (230) may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be implemented by a transmitting unit 120a (220a) and a receiving unit 120b (220b) that are physically or logically separated.

[0505] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). Alternatively, the input device 1005 and output device 1006 may be integrated (e.g., a touch panel).

[0506] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0507] Furthermore, the base station 10 and user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and may use this hardware to implement part or all of each functional block. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0508] (Variation)

[0509] In addition, the terms described in this disclosure and the terms required 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 replaced with each other. In addition, a signal may also be a message. Reference Signal (RS) may also be referred to as RS, and may also be referred to as Pilot, Pilot Signal, etc. depending on the applied standard. In addition, Component Carrier (CC) may also be referred to as Cell, Frequency Carrier, Carrier Frequency, etc.

[0510] A radio frame can also be composed of one or more time periods (frames) in the time domain. Each of these one or more time periods (frames) that make up a radio frame can also be called a subframe. Furthermore, a subframe can also be composed of one or more time slots in the time domain. A subframe can also be a fixed time length (for example, 1ms) that is independent of the numerology.

[0511] Here, a parameter set may also refer to communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, the parameter set may also represent at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, radio frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, and specific windowing processing performed by the transmitter and receiver in the time domain.

[0512] In the time domain, a slot can also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) Furthermore, a slot can also be a time unit based on a parameter set.

[0513] A time slot may also contain multiple mini-slots. Each mini-slot may also consist of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may also consist of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

[0514] Radio frames, subframes, time slots, mini-slots, and symbols all represent time units used for signal transmission. Radio frames, subframes, time slots, mini-slots, and symbols may also be referred to by their respective equivalents. Furthermore, the time units of frame, subframe, time slot, mini-slot, and symbol in this disclosure may be interchangeable.

[0515] For example, a subframe can be called a TTI, multiple consecutive subframes can be called a TTI, and a slot or a mini-slot can be called a TTI. That is, at least one of a subframe and a TTI can be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Furthermore, the unit representing a TTI can be called a slot, a mini-slot, or the like, rather than a subframe.

[0516] Here, TTI refers to, for example, the minimum time unit used for scheduling in wireless communications. For example, in the LTE system, a base station schedules each user terminal by allocating radio resources (such as the frequency bandwidth and transmit power available to each user terminal) in TTI units. The definition of TTI is not limited to this.

[0517] A TTI can also be a unit of time for transmitting channel-coded data packets (transport blocks), code blocks, code words, etc., and can also be a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0518] Furthermore, while a time slot or mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-slots) can also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini-slots) that constitute this minimum time unit for scheduling can also be controlled.

[0519] A TTI with a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a time slot, etc.

[0520] In addition, a long TTI (e.g., normal TTI, subframe, etc.) can also be rewritten as a TTI with a time length exceeding 1ms, and a short TTI (e.g., shortened TTI, etc.) can also be rewritten as a TTI with a TTI length shorter than the long TTI and longer than 1ms.

[0521] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it may also include one or more consecutive subcarriers (subcarriers). The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined based on the parameter set.

[0522] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks.

[0523] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0524] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0525] A Bandwidth Part (BWP) (also known as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) used for a particular parameter set within a carrier. Common RBs can also be identified by their index relative to the common reference point for that carrier. PRBs can also be defined within a BWP and numbered within that BWP.

[0526] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured within one carrier.

[0527] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive specific signals / channels outside the activated BWP.

[0528] The above-mentioned structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length can be varied in various ways.

[0529] Furthermore, the information and parameters described in this disclosure may be expressed as absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may be indicated by specific indexes.

[0530] The names used for parameters, etc. in this disclosure are not intended to be limiting in any respect. Furthermore, the mathematical formulas used for these parameters may differ from those explicitly disclosed in this disclosure. Various channels (such as PUCCH and PDCCH) and information elements can be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any respect.

[0531] Information, signals, and the like described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, and the like that may be referred to throughout the foregoing description may also be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

[0532] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (higher layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0533] Input and output information, signals, etc. can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information, signals, etc. can be overwritten, updated, or appended. Output information, signals, etc. can also be deleted. Input information, signals, etc. can also be sent to other devices.

[0534] The notification of information is not limited to the methods / implementations described in this disclosure and may also be performed using other methods. For example, the notification of information in this disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0535] In addition, physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), Layer 1 control information (L1 control signal), etc. Furthermore, RRC signaling may also be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, MAC signaling may also be notified using, for example, a MAC Control Element (CE).

[0536] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0537] The determination can be made using a value represented by a bit (0 or 1), a true or false value (Boolean value) represented by true or false, or a numerical comparison (eg, comparison with a specific value).

[0538] The term “software” or “firmware” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0539] Furthermore, software, instructions, information, and the like may also be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of the wired technology and the wireless technology is included within the definition of a transmission medium.

[0540] The terms "system" and "network" used in this disclosure are interchangeable. "Network" may also refer to devices included in the network (eg, base stations).

[0541] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL))", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmit power", "phase rotation", "antenna port", "layer", "number of layers", "rank", "resource", "resource set", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel", "UE panel", "transmitting entity", and "receiving entity" can be used interchangeably.

[0542] Furthermore, in the present disclosure, antenna ports can be interchanged with antenna ports used for any signal / channel (e.g., DeModulation Reference Signal (DMRS) ports). In the present disclosure, resources can be interchanged with resources used for any signal / channel (e.g., reference signal resources, SRS resources, etc.). Furthermore, resources can include time / frequency / symbol / space / power resources. Furthermore, a spatial domain transmit filter can include at least one of a spatial domain transmission filter and a spatial domain reception filter.

[0543] The above-mentioned groups may also include, for example, at least one of a spatial relationship group, a code division multiplexing (CDM) group, a reference signal (RS) group, a control resource set (CORESET) group, a PUCCH group, an antenna port group (for example, a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, etc.

[0544] In addition, in the present disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. can also be rewritten.

[0545] In addition, in the present disclosure, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), common TCI state (common TCI state), joint TCI state, etc. can also be rewritten with each other.

[0546] In addition, in the present disclosure, "QCL", "QCL concept", "QCL relationship", "QCL type information", "QCL characteristics (QCLproperty / properties)", "specific QCL type (e.g., type A, type D) characteristics", "specific QCL type (e.g., type A, type D)", etc. can also be rewritten with each other.

[0547] In the present disclosure, index, identifier (ID), indicator, indication, resource ID, etc. may also be overwritten with each other. In the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may also be overwritten with each other.

[0548] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and spatial relationship information (TCI state) can also be overwritten. "Spatial relationship information (TCI state)" can also be overwritten with "a collection of spatial relationship information (TCI state)," "one or more spatial relationship information," and so on. TCI states and TCIs can also be overwritten. Spatial relationship information and spatial relationships can also be overwritten.

[0549] 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" are used interchangeably. In some cases, a base station may be referred to as a macrocell, small cell, femtocell, or picocell.

[0550] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the base station's overall coverage area can be divided into multiple smaller areas, each of which can be provided with communications services by a base station subsystem (for example, a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a portion or the entire coverage area of ​​at least one of a base station and a base station subsystem providing communications services within that coverage area.

[0551] In the present disclosure, the base station sending information to the terminal may also be overwritten with the base station instructing the terminal to control / operate based on the information.

[0552] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (UE)”, and “terminal” can be used interchangeably.

[0553] The mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or some other appropriate terminology.

[0554] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device mounted on a moving object, a moving object body, etc.

[0555] The mobile object refers to a movable object, and the moving speed can be arbitrary, including situations 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, carts, rickshaws, ships (ships and other watercraft), airplanes, rockets, satellites, drones, multicopters, quadcopters, hot air balloons, and objects aboard such objects. Furthermore, the mobile object may also be one that moves autonomously based on operational instructions.

[0556] The mobile object may be a vehicle (e.g., a car, an aircraft, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station may include 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.

[0557] Figure 11 This figure shows an example of a vehicle according to one embodiment. Vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0558] The drive unit 41 is composed of, for example, at least one of an engine, a motor, or a combination of an engine and a motor. The steering unit 42 is configured to include at least a steering wheel (also referred to as a handle), and steers at least one of the front wheels 46 and the rear wheels 47 based on the user's operation of the steering wheel.

[0559] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 included in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an electronic control unit (ECU).

[0560] As signals from various sensors 50-58, there are the following signals, etc.: a current signal from the current sensor 50 that senses the current of the motor, a speed signal of the front wheel 46 / rear wheel 47 obtained by the speed sensor 51, an air pressure signal of the front wheel 46 / rear wheel 47 obtained by the air pressure sensor 52, a vehicle speed signal obtained by the vehicle speed sensor 53, an acceleration signal obtained by the acceleration sensor 54, a stepping amount signal of the accelerator pedal 43 obtained by the accelerator pedal sensor 55, a stepping amount signal of the brake pedal 44 obtained by the brake pedal sensor 56, an operation signal of the shift lever 45 obtained by the shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 58.

[0561] Information service unit 59 is composed of various devices that provide (output) various types of information, including driving information, traffic information, and entertainment information, such as a navigation system, audio system, speakers, displays, televisions, and radios, and one or more ECUs that control these devices. Information service unit 59 uses information acquired from external devices via communication module 60 and other means to provide various information and services (e.g., multimedia information and multimedia services) to the occupants of vehicle 40.

[0562] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0563] The driving assistance system unit 64 is composed of various devices for providing functions for preventing accidents or reducing the driver's driving burden, such as millimeter-wave radar, light detection and ranging (LiDAR), cameras, positioning sensors (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyroscope systems (e.g., inertial measurement units (IMUs)), inertial navigation systems (INSs), etc.), artificial intelligence (AI) chips, and AI processors, and one or more ECUs that control these devices. Furthermore, the driving assistance system unit 64 transmits and receives various information via the communication module 60 to implement driving assistance functions or autonomous driving functions.

[0564] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 with 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, microprocessor 61 and memory (ROM, RAM) 62 within the electronic control unit 49, and various sensors 50-58 included in the vehicle 40.

[0565] The communication module 60 is controlled by the microprocessor 61 of the electronic control unit 49 and is a communication device capable of communicating with external devices. For example, various information can be transmitted and received with the external device via wireless communication. The communication module 60 can be located either inside or outside the electronic control unit 49. Examples of external devices include the aforementioned base station 10 and user terminal 20. Furthermore, the communication module 60 can also be, for example, at least one of the aforementioned base station 10 and user terminal 20 (and can function as at least one of the base station 10 and user terminal 20).

[0566] The communication module 60 may also transmit at least one of the signals input to the electronic control unit 49 from the various sensors 50-58, information obtained based on these signals, and information based on external (user) input received via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, and the like may also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 60 may also include information based on these inputs.

[0567] The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on the vehicle's information service unit 59. The information service unit 59 can also be referred to as an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0568] 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 can also control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like included in the vehicle 40.

[0569] Furthermore, the base station in this disclosure can also be rewritten as a user terminal. For example, the various methods / implementations of this disclosure can also be applied to a structure in which communication between a base station and a user terminal is replaced by communication between multiple user terminals (e.g., device-to-device (D2D) or vehicle-to-everything (V2X)). In this case, the user terminal 20 can also have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" can also be rewritten with terms corresponding to inter-terminal communication (e.g., "sidelink"). For example, uplink channels, downlink channels, etc. can also be rewritten as sidelink channels.

[0570] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0571] In this disclosure, actions are described as being performed by a base station, and sometimes, depending on circumstances, by its upper node. In a network comprising one or more network nodes including a base station, various operations for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0572] The various methods / implementations described in this disclosure may be used individually or in combination, and may be switched between them during execution. Furthermore, the processing procedures, timings, flow charts, and the like of the various methods / implementations described in this disclosure may be reversed as long as they do not conflict. For example, the methods described in this disclosure use an illustrative order to present elements of various steps, but are not limited to the specific order presented.

[0573] The various modes and embodiments described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems utilizing other appropriate wireless communication methods, and next-generation systems based on these that are extended, modified, generated, or specified. Furthermore, multiple systems may be combined for application (for example, LTE or LTE-A combined with 5G).

[0574] The phrase “based on” used in this disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0575] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily define the quantity or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, reference to a first and a second element does not imply that only two elements may be used or that the first element must in some way take precedence over the second element.

[0576] The term "determining" as used in this disclosure may encompass a variety of operations. For example, "determining" may also include judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching a table, database, or other data structure), ascertaining, and the like as performing a "determination."

[0577] In addition, “judgment (decision)” may also refer to situations where receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc. are regarded as “judgment (decision)”.

[0578] Furthermore, "judgment (decision)" can also refer to situations where resolving, selecting, choosing, establishing, comparing, and the like are considered "judgment (decision)." In other words, "judgment (decision)" can also refer to situations where certain actions are considered "judgment (decision)." In this disclosure, "judgment (decision)" can be interchanged with the aforementioned actions.

[0579] In this disclosure, "determine / determining" can be interchanged with "assume / assuming," "expect / expecting," "consider / considering," and the like. Furthermore, in this disclosure, "not assuming to do..." can be interchanged with "assuming not to do..."

[0580] In the present disclosure, "expect" can be replaced with "be expected". For example, "expect(s) ..." ("..." can also be expressed as a that-clause, a to-infinitive, etc.) can be replaced with "be expected ...". "Does not expect ..." can be replaced with "Does not expect ...". In addition, "An apparatus Ais not expected ..." can be replaced with "An apparatus B other than apparatus A does not expect ..." (for example, when apparatus A is a UE, apparatus B can be a base station).

[0581] The “maximum transmit power” described in this disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated maximum transmit power).

[0582] As used in this disclosure, the terms "connected," "coupled," and all variations thereof refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between the two elements being "connected" or "coupled." The coupling or connection between elements can be physical, logical, or a combination thereof. For example, "connected" can also be rephrased as "accessed."

[0583] In the present disclosure, when two elements are connected, it is possible to consider them to be "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., and as several non-limiting and non-inclusive examples, they are "connected" or "combined" to each other using electromagnetic energy having a wavelength in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc.

[0584] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other." Alternatively, the term may also mean "A and B are each different from C." Terms such as "separate" and "bound" may also be interpreted in the same manner as "different."

[0585] When used in this disclosure, "include," "including," and variations thereof have the same inclusive meaning as the term "comprising." Furthermore, the term "or" used in this disclosure does not mean an exclusive OR.

[0586] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure may also include a case where the noun following the article is in a plural form.

[0587] In the present disclosure, “below,” “less than,” “above,” “more,” “equal to,” etc. may be rephrased with each other. Furthermore, in the present disclosure, words meaning “good,” “bad,” “big,” “small,” “high,” “low,” “early,” “slow,” “wide,” “narrow,” etc. are not limited to the positive, comparative, and superlative forms, but may be rephrased with each other. Furthermore, in the present disclosure, words meaning “good,” “bad,” “big,” “small,” “high,” “low,” “early,” “slow,” “wide,” “narrow,” etc. are not limited to the positive, comparative, and superlative forms, but may be rephrased with each other as expressions appended with “the ith” (i is an arbitrary integer) (for example, “the highest” may be rephrased with “the ith highest”).

[0588] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may be replaced with each other.

[0589] In this disclosure, expressions 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 / on A," "B after A," "B since A," and "B until A" can be interchanged. Furthermore, A, B, and the like herein can be replaced with nouns, gerunds, or other suitable expressions, depending on the context. Furthermore, the time difference between A and B can be approximately zero (immediately after or immediately before). Furthermore, a time offset can be applied to the time when A occurs. For example, "A" can be interchanged with "before / after the time offset when A occurs." The time offset (eg, one or more symbols / time slots) may be predetermined or determined by the UE based on notified information.

[0590] In the present disclosure, timing, moment, time, time instance, arbitrary time unit (eg, time slot, sub-time slot, symbol, sub-frame), occasion, resource, etc. may also be interchangeably written.

[0591] While the inventions disclosed herein have been described in detail above, it will be apparent to those skilled in the art that the inventions disclosed herein are not limited to the embodiments described herein. The disclosure herein is provided for illustrative purposes only and is not intended to limit the inventions disclosed herein.

Claims

1. A terminal comprising: a transmitting unit, which transmits a Medium Access Control Control Element (MAC CE) including a Power Headroom (PHR) for each serving cell or each panel when uplink (UL) simultaneous transmission from multiple panels is supported; and The control unit controls the sending of the MAC CE based on specific conditions.

2. The terminal according to claim 1, wherein: The MAC CE includes at least one of a field related to maximum power and a field indicating whether it is an actual PHR or a virtual PHR.

3. The terminal according to claim 1, wherein: The specific condition is based on the presence or absence of UL resources associated with the corresponding panel. The terminal according to claim 1 , wherein: The control unit determines the panel to send the MAC CE based on the presence or absence of UL resources associated with the corresponding panel.

5. A wireless communication method for a terminal, comprising: The step of transmitting a Medium Access Control Control Element (MAC CE) including a power headroom (PHR) per serving cell or per panel in case simultaneous uplink (UL) transmission from multiple panels is supported; and Based on specific conditions, control the step of sending the MAC CE.

6. A base station comprising: a receiving unit, receiving a Medium Access Control Control Element (MAC CE) including a Power Headroom (PHR) for each serving cell or each panel, in a case where simultaneous uplink (UL) transmission from multiple panels is supported; and A control unit controls the terminal to receive the MAC CE determined based on specific conditions.

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