Terminal, wireless communication method, base station and system

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives a setting of a limit on transmission power for each panel or for each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and a control unit that controls, on the basis of the setting, transmission of at least one of a first power headroom (PHR) which is based on actual physical uplink shared channel (PUSCH) transmission and a second PHR which does not depend on the actual PUSCH transmission, wherein at least one of the first PHR and the second PHR is based on single-panel transmission. According to one aspect of the present disclosure, it is possible to suitably perform transmission power control.

Description

Terminal, wireless communication method and base station

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

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

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

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

[0005] In future wireless communication systems, a UE may use one of multiple panels (or multiple beams) for uplink (UL) transmission. To improve UL throughput / reliability, simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) is being considered.

[0006] When multi-panel simultaneous UL transmission is supported, the UE transmits UL simultaneously from two panels, but the reporting / calculation of PHR in this case is unclear. For example, the reporting / calculation of PHR when at least one of multi-panel simultaneous UL transmission, single-panel transmission, and virtual PHR is applied is unclear. This may result in inappropriate transmission control and reduced communication throughput.

[0007] Therefore, one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control transmission power.

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives a setting of a limit on transmission power for each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported, and a control unit that controls, based on the setting, the transmission of at least one of a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission and a second PHR that is independent of the actual PUSCH transmission, wherein at least one of the first PHR and the second PHR is based on a single-panel transmission.

[0009] According to one aspect of the present disclosure, transmission power control can be performed appropriately.

[0010] Figures 1A to 1C are diagrams illustrating an example of PUSCH transmission using multiple panels. Figures 2A and 2B are diagrams illustrating an example of PUCCH transmission using multiple panels. Figure 3 is a diagram illustrating an example of a single-entry PHR MAC CE in Rel. 16 NR. Figure 4 is a diagram illustrating an example of a multiple-entry PHR MAC CE in Rel. 16 NR. Figure 5 is a diagram illustrating an overview of PHR transmission. Figure 6 is a diagram illustrating an example in which one MAC CE includes two PHRs corresponding to one cell. Figure 7 is a diagram illustrating an example in which one MAC CE includes one PHR corresponding to one cell. Figure 8 is a diagram illustrating an example in which one MAC CE includes two PHRs corresponding to multiple cells, each cell including two PHRs. Figure 9 is a diagram illustrating an example in which one MAC CE includes one PHR corresponding to multiple cells, each cell including one PHR. Figure 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. Figure 11 is a diagram illustrating an example of a base station configuration according to an embodiment. Fig. 12 is a diagram illustrating an example of a configuration of a user terminal according to an embodiment. Fig. 13 is a diagram illustrating an example of a hardware configuration of a base station and a user terminal according to an embodiment. Fig. 14 is a diagram illustrating an example of a vehicle according to an embodiment.

[0011] Multi-Panel Transmission: In Rel. 15 and Rel. 16 UEs, only one beam and panel are used for UL transmission at a time (Fig. 1A). In Rel. 17, simultaneous multi-beam and multi-panel UL transmissions are considered for one or more Transmission / Reception Points (TRPs) to improve UL throughput and reliability.

[0012] For simultaneous UL transmission using multiple beams and multiple panels, reception by one TRP with multiple panels (Fig. 1B) or reception by two TRPs with an ideal backhaul (Fig. 1C) is considered. A single PDCCH is considered for scheduling multiple PUSCHs (e.g., simultaneous transmission of PUSCH #1 and PUSCH #2). Panel-specific transmission is considered to be supported, and a panel ID is introduced.

[0013] The base station may configure or indicate panel-specific transmission for UL transmission using a UL Transmission Configuration Indication (TCI) or a panel ID. The UL TCI (UL TCI state) may be based on signaling similar to the DL beam indication supported in Rel. 15. The panel ID may be implicitly or explicitly applied to transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. If the panel ID is explicitly signaled, the panel ID may be configured in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource configuration or spatial relationship information).

[0014] In simultaneous UL transmission using multiple panels, a UE may transmit multiple physical uplink control channels (PUCCHs). The following schemes 1 and 2 are being considered as transmission schemes for simultaneous UL transmission using multiple panels for PUCCHs.

[0015] Scheme 1: Two PUCCH resources overlap in the time domain and are transmitted simultaneously. Each of the two PUCCH resources is associated with a different panel / beam (see Fig. 2A). Each of the two beams is transmitted towards a respective TRP.

[0016] Scheme 2: One PUCCH resource is transmitted simultaneously using two panels / spatial relationships. One PUCCH resource is associated with two panels / beams (see Fig. 2B). Each of the two beams is transmitted towards a respective TRP.

[0017] Although the example has been described in which the number of multi-panels is two, in the present disclosure, the number of panels may be three or more. In other words, the number of panels, which is two, may be interpreted as three or more.

[0018] Note that Scheme 2 may be applied to repetitive transmission of PUCCH in a single frequency network (SFN).

[0019] (UL TCI Status) In Rel. 16 NR, the use of the UL TCI status as a UL beam indication method is being considered. Notification of the UL TCI status is similar to notification of the UE's DL beam (DL TCI status). Note that the DL TCI status may be interchangeably read as the TCI status for PDCCH / PDSCH.

[0020] The channel / signal (which may be referred to as a target channel / RS) to which the UL TCI state is set (specified) may be, for example, at least one of a PUSCH (DMRS of PUSCH), a PUCCH (DMRS of PUCCH), a random access channel (Physical Random Access Channel (PRACH)), an SRS, etc.

[0021] Furthermore, the RS (source RS) that has a QCL relationship with the channel / signal may be, for example, a DL RS (e.g., SSB, CSI-RS, TRS, etc.) or a UL RS (e.g., SRS, SRS for beam management, etc.).

[0022] In the UL TCI state, an RS that has a QCL relationship with the channel / signal may be associated with a panel ID for receiving or transmitting the RS, which may be explicitly configured (or specified) or implicitly determined by higher layer signaling (e.g., RRC signaling, MAC CE, etc.).

[0023] The correspondence between the RS and the panel ID may be set by being included in the UL TCI status information, or may be set by being included in at least one of the resource setting information, spatial relationship information, etc. of the RS.

[0024] The QCL type indicated by the UL TCI status may be an existing QCL type A-D, or may be another QCL type, and may include a predetermined spatial relationship, associated antenna ports (port index), etc.

[0025] When a UE is assigned an associated panel ID for an UL transmission (e.g., assigned by a DCI), the UE may perform the UL transmission using the panel corresponding to the panel ID. The panel ID may be associated with a UL TCI state, and when a UL TCI state is assigned (or activated) for a given UL channel / signal, the UE may identify the panel to use for the UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0026] (Transmission power control) <Transmission power control for PUSH> In NR (e.g., Rel. 16), the transmission power of PUSH is controlled based on the TPC command (also called a value, increase / decrease value, correction value, etc.) indicated by the value of a specified field (also called a TPC command field, etc.) in the DCI.

[0027] For example, when a UE transmits a PUSCH on an active UL BWP b of a carrier f of a serving cell c using a parameter set (open loop parameter set) with index j and a power control adjustment state index l, the transmission power (P ＰＵＳＣＨ、ｂ，ｆ，ｃ (i, j, q ｄ , l)) may be expressed by the following formula (1):

[0028]

[0029] Here, the power control adjustment state may be configured to have multiple states (e.g., two states) or a single state depending on a higher layer parameter. 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 be referred to as a PUSCH power control adjustment state, a first or second state, etc.

[0030] Furthermore, the PUSCH transmission opportunity i is a predetermined period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.

[0031] In formula (1), P ＣＭＡＸ，ｆ，ｃ (i) is, for example, the transmit power of the user terminal (also referred to as maximum transmit power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i. Ｏ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ (j) is, for example, a parameter related to the target received power set for the active UL BWP b of the carrier f of the serving cell c in the parameter set setting j (e.g., a parameter related to the transmit power offset, also referred to as the transmit power offset P0, the target received power parameter, etc.).

[0032] M ＰＵＳＣＨ ＲＢ，ｂ，ｆ，ｃ (i) is the number of resource blocks (bandwidth) allocated to PUSCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ, for example. ｂ，ｆ，ｃ (j) is a value provided by a higher layer parameter (e.g., also called msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0033] PL ｂ，ｆ，ｃ (q ｄ ) is, for example, the index q of the reference signal (path loss reference RS, DL RS for path loss measurement, PUSCH-PathlossReferenceRS) for downlink BWP associated with the active UL BWP b of carrier f of serving cell c. ｄ is the path loss (path loss compensation) calculated by the user terminal using

[0034] Δ ＴＦ，ｂ，ｆ，ｃ (i) is the transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0035] f ｂ，ｆ，ｃ(i, l) is the TPC command-based value (e.g., power control adjustment state, accumulated value of TPC commands, closed-loop value) of the power control adjustment state index l of the active UL BWP of carrier f for serving cell c and transmission opportunity i, where l may be referred to as the closed-loop index.

[0036] If the UE is not provided with a path loss reference RS (e.g., PUSCH-PathlossReferenceRS) or if the UE is not provided with individual upper layer parameters, the UE may use RS resources from the SSB used to obtain the Master Information Block (MIB) to obtain the PL. ｂ，ｆ，ｃ (q ｄ ) may be calculated.

[0037] When the UE is configured with a number of RS resource indices up to the value of the maximum number of pathloss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRS) and a set of RS configurations for the RS resource indices according to the pathloss reference RSs, 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. ｄ may be identified.

[0038] If a PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE uses the same RS resource index q as for the corresponding PRACH transmission. ｄ may also be used.

[0039] When a UE is provided with a power control configuration for the PUSCH by a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl) and is provided with one or more values ​​of the ID of the pathloss reference RS, the UE may obtain a mapping between a set of values ​​for the SRI field in DCI format 0_1 ​​and a set of ID values ​​of the pathloss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may obtain the RS resource index q from the ID of the pathloss reference RS mapped to the SRI field value in DCI format 0_1 ​​that schedules the PUSCH. ｄ may be determined.

[0040] If a PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with PUCCH spatial relationship information for the PUCCH resource with the lowest index for the active UL BWP b of each carrier f and serving cell c, the UE shall transmit the PUCCH spatial relationship information for the PUCCH resource with the same RS resource index q as the PUCCH transmission in that PUCCH resource. ｄ may also be used.

[0041] If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with a spatial setting for the PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_1 ​​that does not include an SRI field, or if the UE is not provided with a power control setting for the PUSCH by the SRI, the UE shall select an RS resource index q with an ID of a path loss reference RS of zero. ｄ may also be used.

[0042] For PUSCH transmission configured by a configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration includes a predetermined parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q is determined by a path loss reference index (e.g., pathlossReferenceIndex) in the predetermined parameter. ｄ may be provided to the UE.

[0043] For the PUSCH transmission configured by the configuration grant configuration, if the configuration grant configuration does not include a predetermined parameter, the UE determines the RS resource index q from the value of the ID of the path loss reference RS mapped to the SRI field in the DCI format that activates the PUSCH transmission. ｄ If the DCI format does not include an SRI field, the UE may determine an RS resource index q with an ID of a pathloss reference RS of zero. ｄ may be determined.

[0044] <Transmission power control for PUCCH> In addition, in NR, the transmission power of PUCCH is controlled based on the TPC command (also called a value, an increase / decrease value, a correction value, an instruction value, etc.) indicated by the value of a predetermined field (also called a TPC command field, a first field, etc.) in DCI.

[0045] For example, the power control adjustment state index l is used to determine the PUCCH transmission power (P ＰＵＣＣＨ、ｂ，ｆ，ｃ (i, q ｕ , q ｄ , l)) may be expressed by the following formula (2).

[0046]

[0047] The power control adjustment state may also be referred to as a PUCCH power control adjustment state, a first or second state, and so on.

[0048] Furthermore, the PUCCH transmission opportunity i is a predetermined period during which the PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0049] In formula (2), P ＣＭＡＸ，ｆ，ｃ (i) is, for example, the transmit power of the user terminal (also referred to as maximum transmit power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i. Ｏ＿ＰＵＣＣＨ，ｂ，ｆ，ｃ (q ｕ ) is, for example, a parameter related to a target received power (e.g., a parameter related to a transmit power offset, also referred to as a transmit power offset P0 or a target received power parameter) set for an active UL BWP b of a carrier f of a serving cell c at a transmission opportunity i.

[0050] M ＰＵＣＣＨ ＲＢ，ｂ，ｆ，ｃ (i) is the number of resource blocks (bandwidth) allocated to PUCCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ, for example. ｂ，ｆ，ｃ (q ｄ ) is, for example, the index q of the reference signal (path loss reference RS, DL RS for path loss measurement, PUCCH-PathlossReferenceRS) for downlink BWP associated with the active UL BWP b of carrier f of serving cell c. ｄ is the path loss calculated at the user terminal using

[0051] 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 UL BWP b of carrier f of serving cell c.

[0052] gｂ，ｆ，ｃ (i, l) is the TPC command-based 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 of the active UL BWP of carrier f for serving cell c and transmission opportunity i.

[0053] If the UE is provided with information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relation information (PUCCH-SpatialRelationInfo), l = {0, 1}; if the UE is not provided with information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relation information, l = 0.

[0054] If the UE obtains the TPC command value from DCI format 1_0 or 1_1, and if the UE is provided with PUCCH spatial relation information, the UE may obtain the mapping between the PUCCH spatial relation information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) through the index provided by the P0 ID for PUCCH (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). If the UE receives an activation command including a value of PUCCH spatial relation information ID, the UE may determine the value of the closed-loop index, which provides the value of l, through a link to the corresponding P0 ID for PUCCH.

[0055] If the UE has an active UL BWP b for carrier f of serving cell c, then P Ｏ＿ＰＵＣＣＨ，ｂ，ｆ，ｃ (q ｕ ) value setting is provided by a higher layer, ｂ，ｆ，ｃ (i, l) = 0, k = 0, 1, ..., i. If the UE is provided with PUCCH spatial related information, the UE ｕ, and the PUCCH spatial relationship information associated with q ｕ The value of l may be determined from the value of

[0056] q ｕ may be a P0 ID for PUCCH (p0-PUCCH-Id) indicating P0 for PUCCH (P0-PUCCH) in a P0 set for PUCCH (p0-Set).

[0057] <SRS Transmission Power Control> For example, using the index l of the power control adjustment state, the transmission power (P ＳＲＳ、ｂ，ｆ，ｃ (i, q ｓ , l) may be expressed by the following formula (3).

[0058] The power control adjustment state may be referred to as an SRS power control adjustment state, a value based on a TPC command, an accumulated value of a TPC command, a value by a closed loop, a first or second state, etc. 1 may be referred to as a closed loop index.

[0059] Furthermore, the SRS transmission opportunity i is a predetermined period during which the SRS is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0060]

[0061] In formula (3), P ＣＭＡＸ，ｆ，ｃ (i) is, for example, the UE maximum output power for carrier f of serving cell c at SRS transmission opportunity i. P Ｏ＿ＳＲＳ，ｂ，ｆ，ｃ (q ｓ ) is the active UL BWP b of carrier f of serving cell c and the SRS resource set q ｓ(provided by SRS-ResourceSet and SRS-ResourceSetId), and a parameter related to the target received power provided by p0 for (for example, a parameter related to the transmit power offset, also referred to as the transmit power offset P0 or the target received power parameter, etc.).

[0062] M ＳＲＳ，ｂ，ｆ，ｃ (i) is the SRS bandwidth in number of resource blocks for SRS transmission opportunity i on active UL BWP b of carrier f of serving cell c and subcarrier spacing μ;

[0063] α ＳＲＳ，ｂ，ｆ，ｃ (q ｓ ) is the active UL BWP b of a serving cell c and carrier f with subcarrier spacing μ and an SRS resource set q ｓ and α (e.g., alpha) for

[0064] PL ｂ，ｆ，ｃ (q ｄ ) is the active DL BWP of serving cell c and the SRS resource set q ｓ and, for RS resource index q ｄ is the DL path loss estimate [dB] calculated by the UE using the RS resource index q ｄ is the SRS resource set q ｓ and a pathloss reference RS (a DL RS for pathloss measurement, e.g., provided by pathlossReferenceRS) associated with the SS / PBCH block index (e.g., ssb-Index) or a CSI-RS resource index (e.g., csi-RS-Index).

[0065] h ｂ，ｆ，ｃ (i, l) is the SRS power control adjustment state for the active UL BWP of carrier f of serving cell c and SRS transmission opportunity i. If the SRS power control adjustment state configuration (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for SRS transmission and PUSCH transmission, h ｂ，ｆ，ｃ(i, l) is the current PUSCH power control adjustment state f ｂ，ｆ，ｃ Same as (i, l).

[0066] The transmission opportunity i for PUSCH, PUCCH, and SRS is the slot index n within the frame of 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 a PUSCH transmission of repetition type B, the transmission opportunity for the PUSCH may be a nominal repetition.

[0067] (Power Requirements) NR addresses the issue of Maximum Permitted Exposure (MPE) (or electromagnetic power density exposure). UEs are required to meet Federal Communication Commission (FCC) regulations on maximum radiation to the human body for health and safety reasons.

[0068] For example, in Rel. 15 NR, restrictions using power-management maximum power reduction (P-MPR) are specified to limit exposure. For example, in the case of non-carrier aggregation (CA), the UE maximum output power P CMAX,f,c is the corresponding P UMAX,f,c The (measured maximum output power, measured set maximum UE output power) is set so as to satisfy the following equation (4).

[0069]

[0070] EIRP max Let P-MPR be the maximum value of the corresponding measured Peak Effective Isotropic Radiated Power (EIRP). f,c Let P-MPR be a value that indicates the maximum output power reduction allowed for carrier f of serving cell c.f,c is the configured UE maximum output power P CMAX,f,c The corresponding total radiated power P TMAX,f,c is P TMAX,f,c ≦TRP max This becomes:

[0071] In the case of carrier aggregation (CA), the UE maximum output power P CMAX,f,c is the corresponding P UMAX,f,c is set so as to satisfy the following equation (5).

[0072]

[0073] Measured P for Carrier Aggregation UMAX is P UMAX =Σ c,f(c) P UMAX,f,c where P UMAX,f,c is the measured power P for carrier f = f(c) of serving cell c UMAX,f,c The measured total radiated power of the carrier aggregation, P TMAX is P TMAX =10log 10 Σ c,f(c) P TMAX,f,c where P TMAX is the total radiated power P for carrier f = f(c) of serving cell c TMAX,f,c is the linear value of the measured total radiated power P TMAX is P TMAX ≦TRP max The boundary is defined as follows.

[0074] That is, the UE must calculate the measured peak EIRP (P UMAX ) is within the lower and upper limits, and the measured total radiated power P TMAX P TMAX ≦TRP ma The maximum output power is P CMAX It can be set as:

[0075] (Multi-TRP) In NR, one or more transmission / reception points (Transmission / Reception Points (TRP)) (Multi-TRP (M-TRP)) are considered to perform DL transmission to a UE using one or more panels (multi-panels). It is also considered that a UE performs UL transmission to one or more TRPs.

[0076] Incidentally, in future wireless systems (e.g., NR after Rel. 17), it is being considered to indicate multiple (e.g., two) SRS Resource Indicators (SRIs) / Transmitted Precoding Matrix Indicators (TPMIs) using a single DCI (single DCI, S-DCI) for performing PUSCH repetition transmission of multiple TRPs (MTRP PUSCH repetition).

[0077] For example, in the case of codebook-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI, a Transmitted Rank Indicator (TRI), and the TPMI. In the case of non-codebook-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI. Note that the SRI may be specified to the UE by the DCI or may be provided by higher layer parameters.

[0078] When a single DCI indicates multiple SRI / TPMIs, the following Option 1 or Option 2 can be considered: - Option 1: A field indicating multiple (e.g., two) SRI / TPMIs is used to indicate SRI / TPMI (values) for multiple (e.g., two) TRPs; - Option 2: A field indicating one SRI / TPMI is indicated, and a code point corresponding to the multiple (e.g., two) SRI / TPMI values ​​is set in the field indicating the SRI / TPMI.

[0079] In Option 1, each code point in multiple SRI / TPMI fields may correspond to one TPMI value. The correspondence (association) between the SRI / TPMI fields and the SRI / TPMI values ​​may be defined in advance in the specifications. Furthermore, the correspondence (association) between the SRI / TPMI fields and the SRI / TPMI values ​​may be the correspondence defined up to Rel. 16 or the correspondence defined in Rel. 17 or later. The correspondence between the SRI / TPMI fields and the SRI / TPMI values ​​may differ for each of the multiple SRI / TPMI fields.

[0080] In Option 2, a code point 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 defined in advance in a specification, or may be notified / configured / activated by RRC signaling / MAC CE.

[0081] It is being considered that a DCI can dynamically indicate / switch between single PUSCH transmission / repeated PUSCH transmission using a single TRP (Single TRP (STRP)) and repeated PUSCH transmission using multiple TRPs (Multi TRP (MTRP)). This dynamic switching may utilize a specific field included in DCI defined up to Rel. 16, or a specific field defined in Rel. 17 or later (e.g., a field for specifying STRP or MTRP operation).

[0082] Furthermore, the term "dynamic switch" in the present disclosure may refer to a "switch that uses at least one of higher layer signaling and physical layer signaling." Furthermore, the term "switch" in the present disclosure may be interchangeably read as switching, change, changing, applying, instructing, setting, and the like.

[0083] (PHR) In future wireless communication systems (e.g., NR), a UE will transmit a Power Headroom Report (PHR) to the network, including information on the power headroom (PH) for each serving cell. The network can use the PHR to control the uplink transmission power of the UE.

[0084] If M-TRP PUSCH is supported / configured / enabled and reporting of two PHRs for two TRPs is configured / enabled, it is considered to include two PHRs (first PHR and second PHR) in the PHR MAC CE. Reporting of two PHRs for two TRPs may be configured for the UE by higher layer parameters (RRC parameters).

[0085] Here, the first PHR may be reported as in Rel. 15 / 16. The second PHR may be a PHR for a different TRP than the first PHR. The second PHR may be reported as an actual PHR or a virtual PHR.

[0086] The actual PHR is a PHR based on an actual PUSCH transmission and may be referred to as a real PHR. The actual PHR may be calculated based on a power control parameter for the actual PUSCH transmission.

[0087] The virtual PHR is a PHR that does not depend on the actual PUSCH transmission (based on the reference PUSCH transmission) and may be referred to as a reference PHR, a PHR according to a reference format, etc. The virtual PHR may be calculated based on the default power control parameters already specified in Rel. 15 / 16 NR, or may be calculated based on new default power control parameters.

[0088] If the UE determines that the Type 1 power headroom report of the active serving cell is based on the actual PUSCH transmission, for a PUSCH transmission opportunity i on the active UL BWP b of carrier f of serving cell c, the UE calculates the Type 1 power headroom report as follows: The PHR in Equation (6) may be referred to as the actual PHR.

[0089]

[0090] If the UE determines that the Type 1 power headroom report of the active serving cell is based on the reference PUSCH transmission, for PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c, the UE calculates the Type 1 power headroom report as follows: The PHR in Equation (7) may be referred to as the virtual PHR.

[0091]

[0092] Here, P ＣＭＡＸ，ｆ，ｃ (i) Bar (P ＣＭＡＸ，ｆ，ｃ (i) with ~ above the P) is MPR = 0 dB, A-MPR = 0 dB, P-MPR = 0 dB, ΔT Ｃ = 0 dB. A-MPR means Additional MPR. For the remaining parameters, P Ｏ＿ＰＵＳＣＨ，ｂ，ｆ，ｃ (j) and α ｂ，ｆ，ｃ (j) is P Ｏ＿ＮＯＭＩＮＡＬ＿ＰＵＳＣＨ，ｆ，ｃ (0), p0-PUSCH-AlphaSetId=0 is used, and PL ｂ，ｆ，ｃ (q ｄ ) uses pusch-PathlossReferenceRS-Id=0, l=0.

[0093] (PHR MAC CE) The PHR may be transmitted by MAC (Medium Access Control) signaling using a PUSCH (Physical Uplink Shared Channel). For example, the PHR is notified using a PHR MAC CE (Control Element) included in a MAC PDU (Protocol Data Unit).

[0094] In NR, a single entry PHR MAC CE for the primary cell (PCell) is supported.

[0095] Figure 3 shows an example of a single-entry PHR MAC CE in Rel. 16 NR. This MAC CE consists of two octets (= 16 bits). 'R' in Figure 3 indicates a 1-bit reserved field, which is set to, for example, '0'.

[0096] 3, 'PH (Type 1, PCell)' indicates a 6-bit field and indicates an index for a Type 1 PH of the primary cell (PCell). The index for the PH is associated with a specific PH value (in decibels (dB)) (or level).

[0097] For example, Type 1 PH may be a PH when taking into consideration the PUSCH (e.g., taking into consideration only the power of the PUSCH), Type 2 PH may be a PH when taking into consideration the PUCCH (e.g., taking into consideration the power of both the PUSCH and the PUCCH), and Type 3 PH may be a PH when taking into consideration a measurement reference signal (Sounding Reference Signal (SRS)) (e.g., taking into consideration the power of the PUSCH and the SRS).

[0098] 'P' in FIG. ＣＭＡＸ，ｆ，ｃ ' indicates a 6-bit field, and is the P used in calculating the PH field above. ＣＭＡＸ，ｆ，ｃ The index for the P ＣＭＡＸ，ｆ，ｃThe index for P is associated with a specific UE transmit power level (dB). ＣＭＡＸ，ｆ，ｃ may be referred to as the configured maximum transmit power (maximum allowed transmit power) of the UE for serving cell c of carrier f. ＣＭＡＸ，ｆ，ｃ is simply P ＣＭＡＸ , PCMAX, etc.

[0099] 'P' in FIG. 3 may be a field related to Power Management Maximum Power Reduction (P-MPR) or Maximum Permitted UE Output Power Reduction for serving cell c, or may be a field related to Maximum Permitted Exposure (MPE). 'MPE' in FIG. 3 may be a field related to MPE. Fields such as 'P' and 'MPE' may be replaced with 'R' fields depending on the configuration using higher layer signaling to the UE.

[0100] The 'P' field is set to FR2 MPE reporting (upper layer parameter mpe-Reporting-FR2), and if the serving cell operates in FR2, it 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), otherwise it is set to 1.

[0101] Also, the 'P' field may indicate whether power backoff is applied for power management if FR2 MPE reporting is not configured or if the serving cell operates in FR1. If power backoff is not applied for power management, the corresponding P ＣＭＡＸ If the fields were to have different values, the 'P' field is set to one.

[0102] The 'MPE' field may indicate the power backoff to be applied to satisfy the MPE requirement if MPE reporting for FR2 (higher layer parameter mpe-Reporting-FR2) is set, the serving cell operates in FR2, and the 'P' field is set to 1. This field may indicate an index corresponding to the measured P-MPR value (e.g., in dB).

[0103] If FR2 MPE reporting is not configured, or the serving cell is operating in FR1, or the 'P' field is set to 0, the R field (R bit) may be present instead of the 'MPE' field.

[0104] In NR, a multiple entry PHR MAC CE that includes multiple pieces of data similar to the above-mentioned single entry (2 octets) is also supported. The multiple entry PHR MAC CE may include a PH field for a primary secondary cell (PSCell) and a secondary cell (SCell). Note that the PCell and PSCell may be referred to as special cells (SpCells).

[0105] Figure 4 shows an example of a multiple-entry PHR MAC CE in Rel. 16 NR. The same fields as in Figure 3 will not be described again. The 6-bit fields containing the word 'PH' in Figure 4 indicate the corresponding type (e.g., types 1-3 described above) and PH field for the cell.

[0106] Note that the presence of the Type 2 PH field for the SpCell of another MAC entity may be set by the higher layer parameter phr-Type2OtherCell being true.

[0107] 'P' in FIG. ＣＭＡＸ，ｆ，ｃ The 6-bit field containing the word ' is the P value used in the calculation of the previous PH field. ＣＭＡＸ，ｆ，ｃ P indicatesＣＭＡＸ，ｆ，ｃ It is a field. 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. Note that FIG. 4 shows the case where the maximum serving cell index is less than 8. If it is 8 or more, the MAC CE can indicate serving cells up to i=31, for example. ｉ ' field may be included.

[0108] The number and P assigned to the "serving cell" in the PH field ＣＭＡＸ，ｆ，ｃ The number in the field may not necessarily mean the serving cell index, but may simply mean the ordinal number of the value included in the MAC CE.

[0109] 'V' in FIG. 4 is a field that indicates whether the PH value corresponding to the immediately following PH field is based on real transmission (V=0) or on a reference format (V=1). A PH based on a reference format may be called a virtual PH. Note that when V=1, the corresponding 'P ＣＭＡＸ，ｃ The ', 'MPE' fields, etc. may be omitted.

[0110] The network may transmit PHR configuration information to the UE regarding the conditions for triggering PHR, such as a prohibit timer, a periodic timer, and a path loss change threshold. This notification may be performed via higher layer signaling. The UE triggers PHR when the PHR trigger conditions are met.

[0111] (Maximum transmission power) Maximum transmission power (maximum transmission power) P of carrier f of serving cell c on panel p ＣＭＡＸｐａｎｅｌ，ｆ，ｃ，ｐ An example of setting P will be explained. ＣＭＡＸｐａｎｅｌ，ｆ，ｃ，ｐ Is, P ＣＭＡＸ，ｆ，ｃ，ｐ ) may also be written as

[0112] Option 0: The UE may receive a configuration (e.g., a configuration similar to that of Rel. 17) regarding the maximum transmission power for each serving cell and each carrier, and may determine the maximum transmission power for each panel based on the configuration. For example, the UE may determine that the maximum transmission power of carrier f of serving cell c is P ＣＭＡＸ，ｆ，ｃ and the maximum transmission power P ＣＭＡＸ，ｆ，ｃ，ｐ The P ＣＭＡＸ，ｆ，ｃ or P ＣＭＡＸ，ｆ，ｃ and P ＣＭＡＸ，ｆ，ｃ，ｐ The P ＣＭＡＸ，ｆ，ｃ , and the relationship may be set in the UE by higher layer signaling / physical layer signaling. In this case, the maximum transmission power for each panel may be set as follows:

[0113] Option 0-1: The UE determines the maximum transmission power P of panel p based on the following equation (8): ＣＭＡＸ，ｆ，ｃ，ｐ where N is the number of panels instructed to transmit simultaneously, i.e., the maximum transmission power of each panel may be the same.

[0114]

[0115] For example, N may be 2 when simultaneous multi-panel transmission is instructed. N may be 1 when single-panel transmission is instructed. Alternatively, N may be determined based on at least one of a value set by the network (base station) through higher layer signaling / physical layer signaling and UE capabilities. Different values ​​may be applied to 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 instructed by the network.

[0116] Option 0-2: The UE determines the maximum transmission power P of panel p based on the following equation (9): ＣＭＡＸ，ｆ，ｃ，ｐmay be determined. That is, the sum of the maximum transmission powers of the panels p may be the maximum transmission power of the UE. Np is a value for panel p and may be different for each panel. That is, the maximum transmission power of each panel may be different.

[0117]

[0118] Np may be determined based on at least one of a value set by higher layer signaling / physical layer signaling from the network (base station) and UE capability, and may have different values ​​applied to single-panel transmission and multi-panel transmission.

[0119] Option 0-3: The UE determines the maximum transmission power P of panel p based on the following equation (10): ＣＭＡＸ，ｆ，ｃ，ｐ In other words, the maximum transmission power of the UE may be the sum of the maximum transmission powers of the panels p. In this case, the maximum transmission powers of the panels p may be the same or different, or some of the panels may have the same maximum transmission power.

[0120]

[0121] This clarifies the maximum transmission power of panel p, the maximum transmission power of all panels, and the relationship between them, allowing the UE to control simultaneous UL transmission of multiple panels using appropriate transmission power.

[0122] (M-TRP PHR Reporting in Rel. 17) In the case of an M-TRP PUSCH repetition in Rel. 17, if a PHR MAC CE is reported in slot n, the first PHR for the first TRP is reported in the same manner as in Rel. 16. The second PHR for the second TRP may be defined as follows: (1) If the first PHR is the actual PHR and the PUSCH repetition associated with the second TRP is in slot n, the second PHR is the actual PHR. (2) If the first PHR is the actual PHR and the PUSCH repetition associated with the second TRP is not in slot n, the second PHR is the virtual PHR. (3) If the first PHR is the virtual PHR, the second PHR is the virtual PHR.

[0123] The virtual PHR may be calculated using the default power control parameters (p0, alpha (α), PL-RS, closed loop index) for each TRP.

[0124] When the UE is provided with twoPHRMode in the active UL BWP b of carrier f of serving cell c and with two SRS resource sets whose usage is set to "codebook" or "non-codebook" in srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, the UE shall provide the following two types of first power headroom reports (1) and (2). In (1) and (2), it is assumed that the UE provides a first Type 1 PHR for the actual PUSCH repetition of the earliest PUSCH transmission in a slot associated with one SRS resource set.

[0125] (1) If the UE transmits a PUSCH repetition associated with another SRS resource set in slot n, then the UE provides a second Type 1 power headroom report for the first actual PUSCH repetition associated with the other SRS resource set that overlaps with slot n. (2) Otherwise (if condition (1) is not met), the UE provides a second Type 1 power headroom report for the reference PUSCH transmission associated with the other SRS resource set.

[0126] (Note) In this disclosure, "panel" may refer to a value (or set of values) of UE capability, as in Rel. 17. Also, "panel" may refer to an equivalent definition of other terms, such as "UE antenna group."

[0127] The beam may indicate spatial relations / TCI / Spatial Relation Information (SRI). The TRP may refer to the CORESETPool / SRS resource set.

[0128] In simultaneous multi-panel transmission (STxMP), the following schemes may be applied: Single DCI (S-DCI) Space Division Multiplexing (SDM) scheme: Different layers / DMRS ports of one PUSCH are separately precoded and transmitted simultaneously from different UE beams / panels. S-DCI Frequency Division Multiplexing (FDM)-A scheme: Different parts of the frequency domain resources of one PUSCH transmission opportunity are transmitted from different UE beams / panels. S-DCI FDM-B scheme: Two PUSCH transmission opportunities of the same / different RV of the same TB are transmitted from different UE beams / panels on non-overlapping frequency domain resources and the same time domain resources. S-DCI SFN-based transmission scheme: The same PUSCH / DMRS is transmitted simultaneously from two different UE beams / panels. S-DCI spatial domain repetition scheme: Two PUSCH transmission opportunities with different redundancy versions (RV) of the same TB are transmitted from two different UE beams / panels on the same time and frequency resources. M-DCI scheme: Two overlapping (fully / partially overlapping in the time domain, fully / partially overlapping or non-overlapping in the frequency domain) PUSCHs are transmitted from two different UE beams / panels.

[0129] Simultaneous multi-panel transmission assumes multi-TPR, 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 a TRP, and the PHR / power of a panel can also be referred to as the PHR / power of a TRP.

[0130] In the present disclosure, it is considered that a UE receives PUSCH / SRS in one panel and PUCCH / SRS in time resources that completely / partially overlap with PUSCH reception in another panel (simultaneous multi-panel reception).

[0131] The "single panel transmission" in this disclosure may be applied only when there is a PUSCH transmission with a single panel and no PUCCH / SRS transmission in other panels on time resources that fully / partially overlap with the PUSCH transmission. Note that in this case, how to handle PHR reporting needs further consideration, e.g., in the case of PUSCH+SRS, reporting one Type 1 PHR based on PUSCH and one Type 3 PHR based on SRS.

[0132] Alternatively, the term "single panel transmission" in the present disclosure may also apply to a case where there is a PUSH transmission with a single panel and there is a PUCCCH / SRS transmission with another panel in a time resource that completely / partially overlaps with the PUSH transmission.

[0133] (Assumptions for simultaneous UL transmission over multiple panels) In the case of simultaneous UL transmission over multiple panels, taking into consideration the limitations on the maximum UL transmission power, at least one of the following assumptions 1-1 to 1-3 is assumed.

[0134] [Assumption 1-1] Consider the maximum UL transmission power for each panel. It is assumed that the actual transmission power of PUSCH / PUCCH / SRS of panel p in serving cell c is equal to or 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 The maximum UL transmission power of panel p in serving cell c may be calculated using any of the above (maximum transmission power) equations (8) to (10). Note that if the carrier is not specified, the element of carrier f may be removed.

[0135] P panel_actual,c,p is the actual transmission power of serving cell c, panel p, and P panel_max,c,p is the maximum UL transmit power of serving cell c, panel p.

[0136] [Assumption 1-2] Consider the maximum UL transmission power for each cell. It is assumed that the total of the actual transmission power of PUSCH / PUCCH / SRS from multiple panels of serving cell c is equal to or less than the maximum UL transmission power of serving cell c. That is, Σ p Ppanel_actual,c,p ≦P cell_max,c The maximum UL transmission power of the serving cell c is the value determined in Rel. 17 (i.e., P ＣＭＡＸ,ｆ,ｃ ) is also acceptable. 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.

[0137] [Assumptions 1-3] Both the maximum UL transmission power per panel and the maximum transmission power per cell may be considered. The transmission power may satisfy the conditions of both Assumptions 1 and 2.

[0138] (Assumptions for Single-Panel UL Transmission) When dynamic switching between single-panel transmission and simultaneous multi-panel transmission is supported, at least one of the following assumptions 2-1 and 2-2 is assumed, taking into account the limit on maximum UL transmission power.

[0139] [Assumption 2-1] Consider the maximum UL transmission power for each panel. It is assumed that the actual transmission power of PUSCH / PUCCH / SRS in single-panel transmission in panel p in serving cell c is equal to or 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 holds true.

[0140] P panel_actual,c,p is the actual transmission power of serving cell c, panel p, and P panel_max,c,p is the maximum UL transmit power of serving cell c, panel p.

[0141] [Assumption 2-2] Consider the maximum UL transmission power for each cell. It is assumed that the total actual transmission power of PUSCH / PUCCH / SRS from the single panel of serving cell c is equal to or less than the maximum UL transmission power of serving cell c. That is, P panel_actual,c,p ≦P cell_max,c The maximum UL transmission power of the serving cell c is the value determined in Rel. 17 (i.e., P ＣＭＡＸ,ｆ,ｃ ) is also acceptable.

[0142] P panel_actual,c,pis the actual transmit power of panel p in serving cell c, and P cell_max,c is the maximum UL transmit power of serving cell c.

[0143] In the case of single panel transmission, panel_max,c,p , P cell_max,c If the same, then Assumption 2-1 and Assumption 2-2 are the same.

[0144] (Analysis) When multi-panel simultaneous UL transmission is supported, the UE transmits UL simultaneously from two panels. However, the reporting / calculation of PHR in this case is unclear. For example, the reporting / calculation of PHR when at least one of multi-panel simultaneous UL transmission, single-panel transmission, and virtual PHR is applied is unclear. This may result in inappropriate transmission control and reduced communication throughput.

[0145] Therefore, the present inventors came up with the idea of ​​a wireless communication method that can appropriately control the transmission power for each panel.

[0146] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0147] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0148] In the present disclosure, terms such as activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0149] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0150] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0151] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0152] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0153] In the present disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In the present disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0154] In the present disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0155] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and the TCI may be interchangeable with each other.

[0156] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and the TCI may be interchangeable with each other.

[0157] In the present disclosure, multi-panel simultaneous transmission (simultaneous multi-panel transmission) and multi-panel simultaneous UL transmission (simultaneous multi-panel UL transmission) may be interchangeable. In the present disclosure, supporting and setting / instructing may be interchangeable. In the present disclosure, loop, power control loop, power control loop index, closed loop, open loop, and power control adjustment state may be interchangeable. In the present disclosure, transmission power and output power may be interchangeable.

[0158] In the present disclosure, the power limitation may refer to a limitation based on the maximum transmission power. In the present disclosure, unless otherwise specified, the PHR may refer to the actual PHR, the virtual PHR, or both the actual PHR and the virtual PHR. In the present disclosure, p and q may refer to panel indexes.

[0159] In the present disclosure, multi-TRP (MTRP, M-TRP), multi-TRP system, multi-TRP transmission, and multi-PDSCH may be read interchangeably.

[0160] In the present disclosure, the terms "PHR," "PH," "PH field," "PH value," etc. may be interchangeable. Also, in the present disclosure, the PH field may be interchangeable with a PH field of a certain type (e.g., type 1 / 2 / 3 / X).

[0161] In the present disclosure, the PHR MAC CE includes a field (P ＣＭＡＸ field, P field, etc.).

[0162] Also, in this disclosure, "P of (corresponding to / for / of) PH field" ＣＭＡＸ "P-MPR value / power backoff" corresponds to "P-MPR value / power backoff of (corresponding to / for) the PUSCH transmission corresponding to the PH field. ＣＭＡＸ These terms may be interchangeably read as "field / P-MPR value / power backoff".

[0163] In the present disclosure, the terms P-MPR, P-MPR value, and power backoff may be read interchangeably.

[0164] (Wireless Communication Method) <First Embodiment> When simultaneous uplink (UL) transmission from multiple panels is supported, a UE receives a configuration of a limit on transmission power per panel / per cell. Based on the configuration, the UE controls the transmission (reporting) of at least one of a power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission (first PHR) and a PHR independent of actual PUSCH transmission (second PHR) (FIG. 5). The limit may be a maximum UL transmit power, for example, the maximum UL transmit power per panel as defined in Equations (8) to (10), or the maximum UL transmit power per cell determined in the same manner as Equations (8) to (10). The UE may determine the maximum UL transmit power based on its capabilities.

[0165] [Aspect 1-1] In Assumption 1-1 of multi-panel simultaneous UL transmission, the maximum UL transmission power for each panel is taken into consideration. When the PUSCH transmission of the serving cell c is a multi-panel simultaneous UL transmission, the UE may report the PHR of the PUSCH of the serving cell c as shown in the following options.

[0166] Option 1: The UE reports two actual PHRs for the two panels. The UE calculates the two actual PHRs based on the power limit for each panel as shown in Equation (11).

[0167]

[0168] For each panel, the PHR is calculated based on the maximum UL transmit power of the panel and the transmit power of the PUSCH associated with the panel calculated using the configuration parameters from the network (P0, α, PL-RS, closed loop index, resource allocation, etc.) used for PUSCH transmission. p is the panel index. P ｐａｎｅｌ_ｍａｘ，ｃ，ｐ is P in the above equations (8) to (10). ＣＭＡＸｐａｎｅｌ，ｆ，ｃ，ｐ (P ＣＭＡＸ，ｆ，ｃ，ｐ ) may be calculated in the same way.

[0169] <<Option 2>> The UE reports one actual PHR among the PHRs for the two panels. The PHR for each panel is calculated based on the power limit value for each panel, as in Option 1 of this aspect. The UE may apply any of the following options (1) to (5).

[0170] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average PHR of multiple panels.

[0171] In the present disclosure, the first panel / second panel may indicate the first / second SRI / TCI state, the SRS resource set with the minimum / maximum ID, the panel with the minimum / maximum ID, and the TRP with the minimum / maximum ID (if one panel is associated with a TRP).

[0172] Option 3: The UE reports the PHR according to Option 1 / 2, and may also report two PHRs for two panels based on the power limitation per cell as shown in Equation (12) below.

[0173]

[0174] For each panel, the PHR is calculated based on the maximum UL transmit power of the cell and the transmit power of the PUSCH associated with the panel, calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed loop index, resource allocation, etc.), where p is the panel index. P ｃｅｌｌ_ｍａｘ，ｃ is P in the above equations (8) to (10). ＣＭＡＸｐａｎｅｌ，ｆ，ｃ，ｐ (P ＣＭＡＸ，ｆ，ｃ，ｐ ) This option is intended to provide a PHR reference for single panel transmissions when simultaneous multi-panel transmissions are based on per-panel power limitations, while single panel transmissions are based on per-cell power limitations.

[0175] Option 4: The UE reports the PHR according to Option 1 / 2, and may also report the PHR of one of two panels based on the cell power limitations. For each panel, the PHR is multiplied by the xPHR of Option 3 based on the cell power limitations. ｃ，ｐ It may be calculated in the same way as (Equation (12)). The UE may apply any of the following (1) to (5).

[0176] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average PHR of multiple panels.

[0177] [Aspect 1-2] In Assumption 2-1, the maximum UL transmission power per panel is considered. When the PUSCH transmission of the serving cell c is a single-panel transmission of panel p, the UE reports the PHR of the PUSCH of the serving cell c according to the following options.

[0178] Option 1: The UE reports one actual PHR of the serving cell based on the power limit per cell, as shown in Equation (13). PHR is the actual PHR of panel p and is calculated in the same way as in Rel. 17, based on the maximum UL transmit power of the serving cell and the transmit power of the PUSCH calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.).

[0179]

[0180] The maximum UL transmit power and power control parameters of the serving cell may be determined similarly to Rel. 17. This option may also be used in conjunction with Assumption 2-2 for the single-panel scenario, i.e., in single-panel transmission, the maximum power limit per cell is taken into account.

[0181] <Option 2> Based on the transmit power limit for each panel, the UE may report one actual PHR to the serving cell as shown in Equation (14), where PHR is the actual PHR of panel p and is calculated based on the maximum UL transmit power of the panel and the transmit power of the PUSCH calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.).

[0182]

[0183] The maximum UL transmit power of the panel may be determined similarly to equations (8) through (10). The power control parameters may be determined similarly to Rel. 17. This option may be used in conjunction with Assumption 2-1 for single-panel transmission. That is, maximum transmit power limitations per panel may be considered for single-panel transmission. Note that in single-panel transmission, if the maximum transmit power of the panel is the same as the maximum transmit power of the cell, then Option 2 is the same as Option 1.

[0184] Option 3: The UE may report two PHRs for two panels to the serving cell. The UE may report an actual PHR for panel p based on per-cell power limitations, and another virtual PHR for panel q based on per-cell limitations. The actual PHR for panel p is reported as in Option 1.

[0185] The virtual PHRs of other panels q are calculated based on the maximum UL transmit power of the serving cell and the virtual transmit power of the PUSCH calculated with default setting parameters (P0, α, PL-RS, closed loop index, resource allocation, etc.) as in Rel. 17 (Equation (15)).

[0186]

[0187] q is the panel index. The maximum UL transmit power and default power control parameters of the serving cell may be determined as in Rel. 17. This option may be used with single panel transmission assumption 2-2.

[0188] Option 4: The UE may report two PHRs for two panels to the serving cell. The UE may report the actual PHR for panel p based on the power limitations for each panel, and may report a virtual PHR for another panel q based on the power limitations for each panel. The actual PHR for panel p may be reported as in Option 2.

[0189] The virtual PHR of another panel q may be calculated based on the maximum UL transmit power of the panel and the virtual transmit power of the PUSH calculated using default configuration parameters (P0, α, PL-RS, closed loop index, resource allocation, etc.), as in equation (16).

[0190]

[0191] Default power control parameters may be determined similarly to Rel. 17. This option may be used in conjunction with Assumption 2-1 for single-panel transmission, i.e., maximum transmit power limitations per panel are considered for single-panel transmission. In single-panel transmission, if the maximum transmit power of the panel is the same as the maximum transmit power of the cell, then Option 4 is the same as Option 3.

[0192] Option 5: The UE reports a PHR according to Option 1 or 3 (based on per-cell restrictions), and may also report two PHRs for two panels based on per-panel restrictions as follows:

[0193] The PHR of panel p is calculated as shown in equation (17) based on the maximum UL transmission power of the panel and the transmission power of the PUSH calculated using the configuration parameters used for PUSH transmission (P0, α, PL-RS, closed loop index, resource allocation, etc.).

[0194]

[0195] Alternatively, the PHR of panel p may be calculated for panel q, i.e., based on the virtual transmit power, as in equation (18).

[0196]

[0197] For the PHR of other panels, q may be calculated as in equation (19) using default setting parameters (P0, α, PL-RS, closed loop index, etc.) calculated based on the maximum UL transmit power of the panel and the virtual transmit power of the PUSH.

[0198]

[0199] Option 6: The UE reports a PHR according to Option 1 or 3 (based on per-cell restrictions) and may also report one of two panel PHRs based on per-panel restrictions as follows:

[0200] For each panel, PHR is xPHR with option 5 c,p , xPHR c,qIn the two panels, the UE may report at least one PHR by applying any of the following (1) to (6).

[0201] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average value of the PHRs of multiple panels. (6) The UE always reports the PHR of panel p, i.e., the PHR associated with the panel used for single-panel transmission.

[0202] Options 5 and 6 allow for proper provision of PHR reference in simultaneous multi-panel transmissions where the PHR reference is based on per-panel power limitations, while single-panel transmissions are based on per-cell power limitations.

[0203] [Aspect 1-3] In Assumption 2-1 for single-panel reception, the maximum UL transmit power for each panel is taken into consideration. When there is no PUSCH transmission in serving cell c, the UE reports a virtual PHR for the PUSCH of serving cell c by applying one of the following options 1 to 4.

[0204] Option 1: The UE reports two virtual PHRs for the two panels of the serving cell. The virtual PHR for each panel is calculated based on the power limit for each cell. The virtual PHR for each panel may reuse the virtual PHR from Option 3 in Aspect 1-2.

[0205] Option 2: The UE reports two virtual PHRs for the two panels of the serving cell. The virtual PHR for each panel is calculated based on the power limit for each panel. The virtual PHR for each panel may reuse the virtual PHR from Option 4 in Aspect 1-2.

[0206] Option 3: The UE reports one PHR for two panels of the serving cell. The virtual PHR for each panel is calculated based on the power limit for each cell, similar to Option 1 / 2.

[0207] <<Option 4>> The UE reports one PHR for the two panels of the serving cell. The virtual PHR for each panel is calculated based on the power limit for each panel, as in Option 2. For Options 3 and 4, any of the following (1) to (5) may be applied.

[0208] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average PHR of multiple panels.

[0209] Option 5: A combination of Option 1 / 3 and Option 2 / 4 may be applied, i.e., the UE may report a virtual PHR based on per-cell limitations according to Option 1 / 3 and additionally report a virtual PHR based on per-panel limitations according to Option 2 / 4, thereby providing a PHR reference for both simultaneous multi-panel transmissions and single-panel transmissions, where the former is based on per-panel power limitations and the latter is based on per-cell power limitations.

[0210] Second Embodiment: When simultaneous uplink (UL) transmission from multiple panels is supported, a UE receives a configuration of a limit on transmission power per panel / per cell. Based on the configuration, the UE controls the transmission (reporting) of at least one of a power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission (first PHR) and a PHR independent of actual PUSCH transmission (second PHR) (FIG. 5). At least one of the first PHR and the second PHR may be based on single-panel transmission.

[0211] [Aspect 2-1] In the case of Assumption 1-2 of simultaneous multi-panel transmission, the maximum UL received power for each cell is taken into consideration. When the PUSCH transmission of the serving cell c is simultaneous multi-panel transmission, the UE reports the PHR of the PUSCH of the serving cell c according to the following options.

[0212] Option 1: The UE reports one actual PHR to the serving cell. The UE calculates this based on the maximum UL transmit power of the cell and the sum of the transmit powers of the PUSCHs associated with multiple panels calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.) (Equation (20)). The maximum UL transmit power of the serving cell is determined in the same way as in Rel. 17.

[0213]

[0214] <Option 2> The UE reports the PHR according to Option 1. In addition, the UE reports two PHRs (based on single-panel transmission) for the two panels. For each panel, the UE calculates the PHR based on the maximum UL transmit power of the cell and the transmit power of the PUSCH associated with the panel, calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.) (Equation (21)). The maximum UL transmit power of the serving cell is determined as in Rel. 17.

[0215]

[0216] This allows the UE to report a PHR as a reference for simultaneous multi-panel transmissions, and also to report a PHR as a reference for single panel transmissions.

[0217] Option 3: The UE reports the PHR according to Option 1. In addition, the UE reports one actual PHR (based on single-panel transmission) for two panels as follows: For each panel, the PHR is calculated in the same way as in Option 2. The UE may apply any of the following options (1) to (5):

[0218] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average PHR of multiple panels.

[0219] This allows the UE to report a PHR as a reference for simultaneous multi-panel transmissions, and also to report a PHR as a reference for single panel transmissions.

[0220] [Aspect 2-2] In Assumption 1-2 of simultaneous multi-panel transmission, the maximum UL transmission power for each cell is considered. When the PUSCH transmission of serving cell c is single-panel transmission of panel p, the UE reports the PHR of the PUSCH of serving cell c using the following options. The PHR transmission in this aspect may be a PHR based on single-panel transmission.

[0221] Option 1: The UE reports one actual PHR to the serving cell. The UE may calculate the PHR based on the maximum UL transmit power of the serving cell and the transmit power of the PUSCH calculated using the configuration parameters used for PUSH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.) as in Rel. 17 (Equation (22)).

[0222]

[0223] The maximum UL transmit power and power control parameters of the serving cell may be determined similarly to Rel.

[0224] Option 2: The UE reports two PHRs for two panels. The UE reports the actual PHR for panel p and the virtual PHR for panel q. The virtual PHR for panel q is calculated in the same way as in Rel. 17 (Equation (23)) based on the maximum UL transmit power of the serving cell and the virtual transmit power of the PUSCH calculated using default configuration parameters (P0, α, PL-RS, closed-loop index, resource allocation, etc.), where q is the panel index.

[0225]

[0226] The maximum UL transmit power and power control parameters of the serving cell may be determined similarly to Rel.

[0227] <<Option 3>> The UE reports the contents of Option 1 / 2, and further reports a virtual PHR (virtual multi-panel simultaneous transmission PHR) as follows: The virtual multi-panel simultaneous transmission PHR is calculated based on the maximum UL transmit power of the serving cell, the transmit power of the PUSCH associated with panel p calculated using the configuration parameters used for PUSCH transmission (P0, α, PL-RS, closed-loop index, resource allocation, etc.), and the virtual transmit power of the PUSCH associated with panel q calculated using the default configuration parameters (P0, α, PL-RS, closed-loop index, resource allocation, etc.) (Equation (24)), where p and q are panel indices.

[0228]

[0229] The maximum UL transmit power and power control parameters of the serving cell, as well as the default power control parameters, may be determined in the same manner as in Rel. 17.

[0230] <<Option 4>> The UE reports the contents of Option 1 / 2, and further reports a virtual PHR (virtual multi-panel simultaneous transmission PHR) as follows:

[0231] The virtual multi-panel simultaneous transmission PHR is calculated in the same manner as in Rel. 17 (Equation (25)) based on the maximum UL transmission power of the serving cell and the sum of the virtual transmission powers of the PUSCHs associated with the multiple panels calculated using the default configuration parameters (P, α, PL-RS, closed-loop index).

[0232]

[0233] The maximum UL transmit power and power control parameters of the serving cell, as well as the default power control parameters, may be determined in the same manner as in Rel. 17.

[0234] Options 3 and 4 allow the UE to report a PHR as a reference for simultaneous multi-panel transmissions and also to report a PHR as a reference for single-panel transmissions.

[0235] [Aspect 2-3] In Assumption 1-2 of simultaneous multi-panel transmission, the maximum UL transmission power for each cell may be considered. When there is no PUSCH transmission in serving cell c, the UE reports a virtual PHR for the PUSCH of serving cell c based on the following options 1 and 2. The PHR transmission in this aspect may be a virtual PHR.

[0236] <<Option 1>> The UE reports two virtual PHRs for the two panels. The virtual PHR for each panel is calculated in the same way as the virtual PHR for Option 2 in Aspect 2-2.

[0237] <<Option 2>> The UE reports one virtual PHR from the PHRs of multiple panels. The virtual PHR of each panel is calculated in the same way as the virtual PHR of Option 2 in Aspect 2-2. For Option 2, any of the following (1) to (5) may be applied.

[0238] (1) The UE always reports the PHR associated with the first panel / second panel. (2) The UE is configured / instructed by the network (base station) via physical layer signaling / higher layer signaling whether to report the PHR associated with the first panel / second panel. (3) The UE decides which panel's PHR to report and reports the panel index along with the PHR. (4) The UE reports the PHR with the maximum / minimum PHR value among the PHRs of multiple panels. (5) The UE reports the average PHR of multiple panels.

[0239] <<Option 3>> The UE reports the contents of Option 1 / 2, and also reports a virtual PHR (virtual multi-panel simultaneous transmission PHR). The virtual multi-panel simultaneous transmission PHR is calculated in the same way as the virtual multi-panel simultaneous transmission PHR in Option 4 of Aspect 2-2. Option 3 allows the UE to report a PHR as a reference for multi-panel simultaneous transmission, and also to report a PHR as a reference for single-panel transmission.

[0240] Third Embodiment In Assumptions 1-3 of simultaneous multi-panel transmission, both the maximum UL transmission power per panel and the maximum transmission power per cell are taken into consideration.

[0241] [Aspect 3-1] When the PUSCH transmission of the serving cell c is simultaneous multi-panel transmission, the UE applies a combination of Aspect 1-1 and Aspect 2-1 to report the PHR of the PUSCH of the serving cell c. That is, the UE reports both the PHR according to Aspect 1-1 and the PHR according to Aspect 2-1.

[0242] [Aspect 3-2] When the PUSCH transmission of the serving cell c is single-panel transmission, the UE reports the PHR of the PUSCH of the serving cell c by applying a combination of Aspect 1-2 and Aspect 2-2. That is, the UE reports both the PHR according to Aspect 1-2 and the PHR according to Aspect 2-2.

[0243] [Aspect 3-3] When there is no PUSCH transmission in serving cell c, the UE reports a PHR for the PUSCH of serving cell c by applying a combination of Aspects 1-3 and 2-3. That is, the UE reports both the PHR according to Aspect 1-3 and the PHR according to Aspect 2-3.

[0244] <Note> In each of the above embodiments / aspects, the actual PHR is calculated based on the actual PUSCH transmission and the configured power control parameters used for the PUSCH transmission. The virtual PHR is calculated based on the transmission of the reference PUSCH and the default power control parameters determined by a predefined rule. The power control parameters are configured by the network (base station) through physical layer signaling / higher layer signaling.

[0245] In a single-panel transmission, when reporting one actual PHR and one virtual PHR for each of two panels, the actual PHR corresponds to the panel used / associated with the actual PUSCH transmission and is calculated based on the actual PUSCH transmission, and the virtual PHR corresponds to the other panel not used for the PUSCH transmission and is calculated based on a reference / virtual PUSCH transmission associated with the other panel.

[0246] The PHR of the present disclosure may be a single-entry PHR (for a single serving cell), a multi-entry PHR (for multiple serving cells), or both a single-entry PHR (for a single serving cell) and a multi-entry PHR (for multiple serving cells).

[0247] <Modifications> [Modification 1] In the case of a multi-cell (multi-serving cell) configuration, when a PHR is transmitted in the serving cell c1, the UE may report the PHR of the serving cell c2 as follows.

[0248] If the UE is configured with multiple cells for PUSCH transmission, and the SCS configuration μ1 on the active UL BWP b1 of carrier f1 of serving cell c1 is smaller than the SCS configuration μ2 on the active UL BWP b2 of carrier f2 of serving cell c2, and the UE provides a Type 1 power headroom report for PUSCH transmission in slots on the active UL BWP b1 that overlap with multiple slots on the active UL BWP b2, then the UE provides a Type 1 power headroom report for the first PUSCH (if present) in the first slot of the multiple slots on the active UL BWP b2 that completely overlap with the slot on the active UL BWP b1.

[0249] If the UE is configured in multiple cells for PUSCH transmission with the same SCS configuration on active UL BWP b1 on carrier f1 of serving cell c1 and active UL BWP b2 on carrier f2 of serving cell c2, and the UE provides a Type 1 power headroom report for PUSCH transmission in a slot on active UL BWP b1, the UE shall provide a Type 1 power headroom report for the first PUSCH (if present) on a slot on active UL BWP b2 that overlaps with a slot on active UL BWP b1.

[0250] If the UE is configured with multiple cells for PUSCH transmission and provides a Type 1 power headroom report for a PUSCH transmission of PUSCH repetition Type B that spans multiple slots on the active UL BWP b1 and has a nominal repetition that overlaps with one or more slots on the active UL BWP b2, the UE shall provide a Type 1 power headroom report for the first PUSCH (if present) in the first slot of the one or more slots on the active UL BWP b2 that overlap with multiple slots of the nominal repetition on the active UL BWP b1.

[0251] [Modification 2] In the case of multiple serving cells, when a PHR is transmitted in the serving cell c1, the following options may be applied when reporting the PHR of the serving cell c2.

[0252] <<Option 1>> The rule of Rel. 17 (Variation 1) may be reused, i.e., the UE provides a PHR for the first PUSCH on the first slot of UL BWP b2 of serving cell c2 that partially / fully overlaps with the slot on BWP b1 of serving cell c1 where the PHR report was transmitted, or the first PUSCH.

[0253] <<Option 2-1>> The UE provides a PHR for the first PUSCH transmission for simultaneous multi-panel transmission on the first slot of the UL BWP b2 of the serving cell c2 that partially / completely overlaps with the slot on the BWP b1 of the serving cell c1 in which the PHR report is transmitted, or the first PUSCH transmission for simultaneous multi-panel transmission.

[0254] <<Option 2-2>> The UE provides a PHR for the first single-panel PUSCH transmission on the first slot of the UL BWP b2 of the serving cell c2 that partially / completely overlaps with the slot on the BWP b1 of the serving cell c1 in which the PHR report is transmitted, or the first single-panel PUSCH transmission.

[0255] <<Option 2-3>> The UE provides a PHR for the first single-panel PUSCH transmission from the first panel on the first slot of UL BWP b2 of serving cell c2 that partially / fully overlaps with the slot of BWP b1 of serving cell c1 in which the PHR report is transmitted, or the first single-panel PUSCH transmission from the first panel.

[0256] <<Option 2-4>> The UE provides a PHR for the first single-panel PUSCH transmission from the second panel on the first slot of UL BWP b2 of serving cell c2 that partially / fully overlaps with the slot of BWP b1 of serving cell c1 in which the PHR report is transmitted, or the first single-panel PUSCH transmission from the second panel.

[0257] <<Option 2-5>> Multiple options among Options 2-1 to 2-4 are supported. For example, Option 2-1 + Option 2-2, i.e., the UE reports a PHR for each of the first PUSCH transmission of a multi-panel simultaneous transmission and the first single-panel PUSCH transmission.

[0258] <<Option 2-6>> The UE may be configured / triggered / instructed by the network (base station) to use any of the above options, and may report the PHR based on the configuration / trigger / instruction.

[0259] If the PUSCH determined for UL BWP2 of serving cell 2 from the rules of Rel. 17 or the new rules (options 2-1 to 2-6) is a multi-panel simultaneous transmission, the UE may report the PHR according to aspects 1-1 / 2-1 / 3-1. If the PUSCH determined for UL BWP2 of serving cell 2 from the rules of Rel. 17 or the new rules is a single-panel transmission, the UE may report the PHR according to aspects 1-2 / 2-2 / 3-2. If the PUSCH determined for UL BWP2 of serving cell 2 from the rules of Rel. 17 or the new rules is a reference PUSCH, the UE may report the PHR according to aspects 1-3 / 2-3 / 3-3.

[0260] Fourth Embodiment In each of the above embodiments, when the PHRs of two panels are reported, any of the following (1) to (3) may be applied.

[0261] (1) The Rel. 17 MAC CE for multi-TRP PHR reporting may be reused. That is, "Extended Single-Entry PHR for Multi-TRP MAC CE" and "Extended Multi-Entry PHR for Multi-TRP MAC CE" may be applied. (2) A new MAC CE for simultaneous multi-panel transmission is introduced, with two or more PHR fields for each serving cell. One MAC CE may contain PHRs for one or multiple cells. (3) Two MAC CEs report two PHRs for two panels, respectively.

[0262] When two PHR fields are reported by one MAC CE (see (2) above), the two PHR fields are associated with different panels, i.e., the first PHR field is associated with the first panel, and the second PHR field is associated with the second panel.

[0263] Alternatively, in the case of single panel transmission, where one actual PHR and one virtual PHR are reported for each of the two panels, the actual PHR is for the panel used / associated with the actual PUSH transmission and the virtual PHR is for the other panel not used for the PUSH transmission and is based on the reference / virtual PUSH transmission associated with the other panel.

[0264] When two MAC CEs are reported for two PHRs for two panels (see (3) above), the two MAC CEs may be distinguished by different LCIDs (i.e., the first MAC CE is associated with the first panel and the second MAC CE is associated with the second panel). The two MAC CEs may be distinguished by the panel index or the TRP index included in the MAC CE (considering that one panel is associated with one TRP).

[0265] Or, in the case of single panel transmission, where one actual PHR and one virtual PHR are reported for each of the two panels, the actual PHR is for the panel used / associated with the actual PUSH transmission, and the virtual PHR is for the other panel not used for the PUSH transmission and is based on the reference / virtual PUSH transmission associated with the other panel.

[0266] In the above, the first / second panel may indicate the first / second SRI / TCI state, or a low / high ID SRS resource set, or a low / high ID panel, or a low / high ID TRP (considering that one panel is associated with a TRP).

[0267] A specific example of a MAC CE according to this embodiment will be described. Fig. 6 shows an example in which one MAC CE includes two PHRs corresponding to one cell. Fig. 7 shows an example in which one MAC CE includes one PHR corresponding to one cell. In Fig. 7, a panel index is included separately from the PHR.

[0268] Figure 8 shows an example in which one MAC CE corresponds to multiple cells and includes two PHRs per cell. Figure 9 shows an example in which one MAC CE corresponds to multiple cells and includes one PHR per cell. In Figure 9, a panel index is included separately from the PHR.

[0269] Each MAC CE may include, for example, an identifier indicating whether each PHR is a real PHR or a virtual PHR (similar to the V field of the MAC CE in Rel. 16 / 17), a maximum power per panel, and a maximum power per cell (P field of the MAC CE in Rel. 16 / 17). ＣＭＡＸ , panel MPE indication, cell MPE indication (similar to the P field and MPE field of the MAC CE in Rel. 16 / 17), etc.

[0270] <Others> Note that aspects 1-2 and 2-2 may also show a method of reporting PHR when single-panel transmission is scheduled under assumptions 1-1 to 1-3 for simultaneous multi-panel transmission. For example, when assumption 1-1 for simultaneous multi-panel transmission (restrictions per panel) is applied and single-panel transmission is scheduled, the PHR for each panel of the simultaneous multi-panel transmission is reported with restrictions per panel, taking into account switching between single-panel transmission and multi-panel transmission.

[0271] In the case of scenario 1-2 (per-cell limit) for simultaneous multi-panel transmission, if a single-panel transmission is scheduled, the virtual PHR for the simultaneous multi-panel transmission is reported using the per-cell limit, taking into account switching between single-panel and multi-panel transmission.

[0272] The UE may be configured / instructed by physical layer / higher layer signaling regarding dynamic switching between single panel transmission and simultaneous multi-panel transmission. The UE may also transmit (report) a UE capability indicating whether it supports dynamic switching between single panel transmission and simultaneous multi-panel transmission. The UE may apply different embodiments / aspects / options depending on whether it supports dynamic switching between single panel transmission and simultaneous multi-panel transmission.

[0273] <Supplementary Note> At least one of the above-described embodiments may be applied only to UEs that have reported or support a specific UE capability.

[0274] The specific UE capability may indicate at least one of the following: - Support of specific processing / operation / control / information for at least one of the above embodiments; - The UE supports simultaneous multi-panel transmission and reception; - The UE supports per-panel or per-cell power limitation for simultaneous multi-panel transmission; - The UE supports per-panel or per-cell power limitation for single-panel transmission (if simultaneous multi-panel transmission is supported); - The UE supports reporting two PHRs for two panels to one serving cell.

[0275] Furthermore, the specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., cell, band, BWP), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)).

[0276] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0277] Furthermore, at least one of the above-described embodiments may be applied when the UE is configured with specific information related to the above-described embodiments by higher layer signaling.

[0278] If the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, the UE may apply, for example, Rel. 15 / 16 behavior.

[0279] (Supplementary Note A) The following inventions are added to one embodiment of the present disclosure. [Supplementary Note 1] A terminal having: a receiving unit that receives a setting of a limit on transmission power for each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and a control unit that controls, based on the setting, transmission of at least one of a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission and a second PHR that is independent of the actual PUSCH transmission. [Supplementary Note 2] The terminal described in Supplementary Note 1, in which the control unit controls transmission of at least one of a PHR based on a limit on transmission power for each panel and a PHR based on a limit on transmission power for each cell. [Supplementary Note 3] The terminal described in Supplementary Note 1 or Supplementary Note 2, in which the control unit controls transmission of both the first PHR and the second PHR. [Supplementary Note 4] The terminal described in any of Supplements 1 to 3, in which the control unit transmits a PHR of one of two panels.

[0280] (Supplementary Note B) The following inventions are added to one embodiment of the present disclosure. [Supplementary Note 1] A terminal including: a receiving unit that receives a setting of a limit on transmission power for each panel or for each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and a control unit that controls, based on the setting, transmission of at least one of a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission and a second PHR that is independent of the actual PUSCH transmission, wherein at least one of the first PHR and the second PHR is based on single-panel transmission. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the control unit controls transmission of a PHR based on a limit on transmission power for each cell. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the control unit controls transmission of both the first PHR and the second PHR. [Supplementary Note 4] The terminal according to any one of Supplements 1 to 3, wherein the control unit transmits a PHR of one of two panels.

[0281] (Supplementary Note C) The following inventions are added to one embodiment of the present disclosure. [Supplementary Note 1] A terminal having: a control unit that applies a power headroom (PHR) for each panel when simultaneous uplink (UL) transmission from multiple panels is supported; and a transmission unit that transmits a Medium Access Control Element (MAC CE) including the PHR for each panel. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein the MAC CE includes two PHRs per cell. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein the MAC CE includes a panel index corresponding to the PHR.

[0282] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0283] 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0284] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0285] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0286] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0287] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0288] 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).

[0289] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0290] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0291] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0292] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0293] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0294] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0295] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0296] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0297] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.

[0298] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0299] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0300] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0301] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0302] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0303] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0304] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0305] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0306] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0307] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0308] 11 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0309] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0310] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0311] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0312] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0313] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0314] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0315] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0316] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0317] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0318] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0319] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0320] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0321] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0322] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0323] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0324] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0325] In addition, when simultaneous uplink (UL) transmission from multiple panels is supported, the transceiver unit 120 may transmit a setting of a limit on transmission power for each panel or each cell.

[0326] When simultaneous uplink (UL) transmission from multiple panels is supported, the transceiver 120 may apply a power headroom (PHR) for each panel and receive a Medium Access Control Element (MAC CE) including the PHR for each panel.

[0327] The control unit 110 may control reception of at least one of a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission and a second PHR independent of the actual PUSCH transmission, which are transmitted based on the configuration. At least one of the first PHR and the second PHR may be based on a single panel transmission.

[0328] (User Terminal) Fig. 12 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0329] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0330] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0331] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0332] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0333] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0334] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0335] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0336] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0337] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0338] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0339] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0340] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0341] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0342] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0343] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0344] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0345] In addition, when simultaneous uplink (UL) transmission from multiple panels is supported, the transceiver unit 220 may receive a setting for a limit on transmission power for each panel or cell.

[0346] The controller 210 may control, based on the setting, transmission of at least one of a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission and a second PHR independent of the actual PUSCH transmission. At least one of the first PHR and the second PHR may be based on a single panel transmission.

[0347] The control unit 210 may control the transmission of at least one of a PHR based on a limit on transmission power for each panel and a PHR based on a limit on transmission power for each cell.

[0348] The control unit 210 may control the transmission of both the first PHR and the second PHR.

[0349] The control unit 210 may control the transmission of the PHR from one of the two panels.

[0350] The control unit 210 may apply per-panel power headroom (PHR) when simultaneous uplink (UL) transmission from multiple panels is supported.

[0351] The transceiver 220 may transmit a Medium Access Control Element (MAC CE) including a PHR for each panel. The MAC CE may include two PHRs per cell. The MAC CE may include a panel index corresponding to the PHR.

[0352] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0353] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0354] For example, a base station, a user terminal, or the like according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0355] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0356] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0357] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0358] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0359] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0360] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0361] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0362] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0363] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0364] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0365] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0366] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0367] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0368] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0369] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0370] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0371] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0372] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0373] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0374] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0375] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0376] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0377] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0378] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0379] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0380] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0381] 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.

[0382] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0383] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0384] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0385] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0386] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0387] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0388] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0389] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0390] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0391] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0392] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0393] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0394] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0395] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0396] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0397] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0398] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0399] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0400] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0401] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0402] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0403] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0404] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0405] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0406] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0407] 14 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0408] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0409] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0410] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0411] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0412] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0413] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0414] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0415] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0416] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0417] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0418] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0419] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0420] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0421] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0422] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0423] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0424] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0425] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0426] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0427] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0428] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "deciding" some action.

[0429] Furthermore, "judgment (decision)" may be read as "assuming," "expecting," "considering," or the like.

[0430] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0431] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0432] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0433] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0434] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0435] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0436] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0437] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0438] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

[0439] This application is based on Japanese Patent Application No. 2022-81199, filed May 17, 2022, the contents of which are incorporated herein in their entirety.

Claims

1. a receiver for receiving a per-panel transmit power limit setting if simultaneous uplink (UL) transmission using multiple panels is supported; a control unit that applies the power headroom (PH) reporting for each panel based on the setting; a transmitting unit that transmits a Medium Access Control Element (MAC CE) including a PH for each of the panels corresponding to each of a plurality of cells.

2. 2. The terminal of claim 1, wherein the MAC CE includes a field indicating whether the per-panel PH is based on actual transmission or according to a reference format, a field indicating the per-panel maximum power, and a field related to the per-panel maximum permissible exposure (MPE).

3. The terminal of claim 1 , wherein the PH for each panel is associated with a different Transmission Configuration Indication (TCI) state.

4. receiving a per-panel transmit power limit configuration if simultaneous uplink (UL) transmission using multiple panels is supported; applying a power headroom (PH) report for each panel based on the configuration; and transmitting a Medium Access Control Element (MAC CE) including a PH for each of the panels corresponding to each of a plurality of cells.

5. a transmitter for transmitting a limit setting for a transmission power per panel to a terminal when simultaneous uplink (UL) transmission using multiple panels is supported in the terminal; a control unit that sets a report of a power headroom (PH) for each panel in the terminal according to the setting; a receiving unit that receives a Medium Access Control Element (MAC CE) including a PH for each of the panels corresponding to each of a plurality of cells.

6. A system having a terminal and a base station, The terminal includes a receiving unit that receives a setting of a limit on transmission power for each panel when simultaneous uplink (UL) transmission using multiple panels is supported; a control unit that applies the power headroom (PH) reporting for each panel based on the setting; a transmitter that transmits a Medium Access Control Element (MAC CE) including a PH for each of the panels corresponding to each of a plurality of cells; The base station includes a transmission unit that transmits the setting to the terminal; a control unit that sets a report of the PH for each panel in the terminal according to the setting; a receiver for receiving the MAC CE.