Terminal, wireless communication method, and base station

Abstract

A terminal according to one embodiment of the present disclosure is provided with: a reception unit that, when uplink (UL) simultaneous transmission from a plurality of panels is supported, receives a setting of a limit pertaining to transmission power for each panel or each cell; and a control unit that, on the basis of the setting, controls 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 does not depend on the actual PUSCH transmission. According to one embodiment of the present disclosure, transmission power control can be appropriately performed.

Description

Technical Field

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

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

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

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems, UE can use one of the multiple panels (or multiple beams) for uplink (UL) transmission. In addition, in order to improve the throughput / reliability of UL, research is conducted on: supporting simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) for more than one transmission / reception point (TRP)).

[0009] When multi-panel simultaneous UL transmission is supported, although the UE transmits UL from two panels at the same time, the reporting / calculation of PHR in this case is not clear. For example, the reporting / calculation of PHR in the case of applying at least one of multi-panel simultaneous UL transmission, single-panel transmission, and virtual PHR is not clear. As a result, transmission control cannot be properly performed, and there is a concern that communication throughput will be reduced.

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

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present invention comprises: a receiving unit, which receives settings for restrictions related to the transmission power of each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and a control unit, which controls the transmission of at least one of the following based on the settings: a first power margin (PHR) based on an actual physical uplink shared channel (PUSCH) transmission, and a second PHR that is independent of the actual PUSCH transmission.

[0013] Effects of the Invention

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

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

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

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

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

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

[0020] Figure 6 This shows an example where a MAC CE contains two PHRs corresponding to one cell.

[0021] Figure 7 This shows an example where a MAC CE includes a PHR corresponding to a cell.

[0022] Figure 8 This is an example showing that one MAC CE corresponds to multiple cells and includes 2 PHRs for each cell.

[0023] Fig. 9 This is an example showing that one MAC CE corresponds to multiple cells and includes one PHR for each cell.

[0024] Fig.10 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0025] Fig.11 This is a diagram showing an example of the configuration of a base station according to an embodiment.

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

[0027] Fig.13 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment.

[0028] Fig.14 This is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0029] (Multi-panel sending)

[0030] In Rel.15 and Rel.16 UEs, only one beam and panel is used for UL transmission at a time ( Figure 1A ). In Rel.17, in order to improve UL throughput and reliability, simultaneous UL transmission of multiple beams (multiple beams) and multiple panels (multiple panels) is studied for more than one transmission / reception point (TRP).

[0031] For simultaneous UL transmission using multiple beams and multiple panels, reception based on one TRP with multiple panels is being studied ( Figure 1B ), or based on the reception of 2 TRPs with an ideal backhaul ( Figure 1C ). A single PDCCH for scheduling multiple PUSCHs (e.g., simultaneous transmission of PUSCH#1 and PUSCH#2) is under study. Support for panel-specific transmission and introduction of panel IDs are under study.

[0032] The base station may also configure or indicate a panel-specific transmission for UL transmission using a Transmission Configuration Indication (TCI) or a panel ID. UL TCI (UL TCI state) may also be based on signaling similar to the DL beam indication supported in Rel.15. The panel ID may also be implicitly or explicitly applied to the transmission of at least one of a target RS resource or a target RS resource set, PUCCH, SRS, and PRACH. In the case where the panel ID is explicitly notified, the panel ID may also be set in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource setting or spatial relationship information).

[0033] In simultaneous UL transmission using multiple panels, the UE may also transmit multiple physical uplink control channels (PUCCHs). As a transmission method for simultaneous UL transmission using multiple panels for PUCCH, the following schemes 1 and 2 are studied.

[0034] [Solution 1]

[0035] The two PUCCH resources are repeated (overlapped) in the time domain and are transmitted simultaneously. Each of the two PUCCH resources is associated with a different panel / beam (see Figure 2A ). Each of the two beams is sent toward each TRP.

[0036] [Solution 2]

[0037] One PUCCH resource is sent simultaneously using two panels / spatial relationships. One PUCCH resource is associated with two panels / beams (see Figure 2B ). Each of the two beams is transmitted toward each TRP.

[0038] In addition, although the case where the number of multi-panels is 2 is described as an example, in the present disclosure, the number of panels may be 3 or more. In other words, the number of panels, 2, may also be rewritten as 3 or more.

[0039] In addition, scheme 2 can also be applied to the repetition of PUCCH in SFN (single frequency network).

[0040] (UL TCI status)

[0041] In Rel.16NR, the use of UL TCI status as a UL beam indication method is being studied. The notification of UL TCI status is similar to the notification of DL beam (DL TCI status) of UE. In addition, DL TCI status can also be rewritten with TCI status for PDCCH / PDSCH.

[0042] The channel / signal (also referred to as the target channel / RS) for which the UL TCI state is set (specified) may be, for example, at least one of PUSCH (DMRS of PUSCH), PUCCH (DMRS of PUCCH), random access channel (Physical Random Access Channel (PRACH)), SRS, etc.

[0043] In addition, the RS (source RS) that has a QCL relationship with the channel / signal can be, for example, a DL RS (for example, SSB, CSI-RS, TRS, etc.) or a UL RS (for example, SRS, SRS for beam management, etc.).

[0044] In the UL TCI state, the RS that forms a QCL relationship with the channel / signal can also be associated with the panel ID used to receive or send the RS. The association can be explicitly set (or specified) through high-level signaling (such as RRC signaling, MAC CE, etc.) or can be implicitly determined.

[0045] 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.

[0046] The QCL type represented by the UL TCI state may be the existing QCL type AD or other QCL types, and may also include a specific spatial relationship, an associated antenna port (port index), and the like.

[0047] If the UE is assigned (e.g., assigned by DCI) an associated panel ID for UL transmission, it can also use the panel corresponding to this panel ID for this UL transmission. The panel ID can also be associated with the UL TCI state. In the case where the UL TCI state is assigned (or activated) for a specific UL channel / signal, the UE can also determine the panel for the UL channel / signal transmission according to the panel ID associated with this UL TCI state.

[0048] (Transmission Power Control)

[0049] <Transmission Power Control for PUSCH>

[0050] In NR (e.g., Rel.16), the transmission power of the PUSCH is controlled based on the TPC command (also known as value, increment / decrement value, correction value, etc.) indicated by the value of a specific field (also known as the TPC command field, etc.) in the DCI.

[0051] For example, when the UE transmits the PUSCH on the active UL BWP b of the carrier f of the serving cell c using the parameter set with index j (open-loop parameter set) and the index l of the power control adjustment state, the transmission power (P PUSCH,b,f,c (i,j,q d ,l)) of the PUSCH in the PUSCH transmission occasion (also known as the transmission period, etc.) i can also be expressed by the following formula (1).

[0052]

[0053] Here, the power control adjustment state can also be set by a higher-layer parameter to have multiple states (e.g., 2 states) or a single state. In addition, in the case where multiple power control adjustment states are set, one of the multiple power control adjustment states can be identified by the index l (e.g., l ∈ {0,1}). The power control adjustment state can also be referred to as the PUSCH power control adjustment state, the first or second state, etc.

[0054] In formula (1), P CMAX,f,c(i) is, for example, the transmission power (also known as the maximum transmission power, UE maximum output power, etc.) of the user terminal set for the carrier f of the serving cell c in the transmission occasion i. P O_PUSCH,b,f,c(j) For example, parameters related to the target receiving power set for the activation UL BWP b of the carrier f of the serving cell c in the parameter set j (for example, also referred to as parameters related to the transmit power offset, the transmit power offset P0, the target receiving power parameter, etc.).

[0055] M PUSCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to the PUSCH for transmission opportunity i in the activated UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (j) is a value provided by a higher layer parameter (for example, also called msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0056] PL b,f,c (q d ) is, for example, an index q of a reference signal for a downlink BWP (a path loss (PL) reference RS, a path loss measurement DL-RS, a PUSCH-PathlossReferenceRS) associated with an activated UL BWP b of a carrier f of a serving cell c used in a user terminal. d To calculate the path loss (path loss compensation).

[0057] Δ TF,b,f,c (i) is a transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0058] f b,f,c (i, l) is the value of the TPC command of the power control adjustment state index l based on the activated UL BWP of the carrier f of the serving cell c and the transmission opportunity i (e.g., power control adjustment state, cumulative value of TPC commands, closed-loop based value). l can also be called a closed-loop index.

[0059] In the case where the UE is not provided with a path loss reference RS (e.g., PUSCH-PathlossReferenceRS), or the UE is not provided with dedicated higher layer parameters, the UE may also calculate the PL using RS resources from the SSB used to obtain the Master Information Block (MIB). b,f,c (q d ).

[0060] When the UE is configured with the number of RS resource indices up to the value of the maximum number of path loss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRS) and the set of RS configurations for RS resource indices is configured by the path loss reference RS, the set of RS resource indices may also include one or both of the set of SS / PBCH block indices and the set of CSI-RS resource indices. The UE may also identify the RS resource index q in the set of RS resource indices. d .

[0061] When a PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE may also use the same RS resource index q as that used for the corresponding PRACH transmission. d .

[0062] When the UE is provided with a configuration for power control of the PUSCH based on a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl) and provided with one or more values ​​of the ID of the path loss reference RS, a mapping between a set of values ​​of the SRI field in DCI format 0_1 ​​and a set of ID values ​​of the path loss reference RS may also be obtained from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may also determine the RS resource index q based on the ID of the path loss reference RS mapped to the SRI field value in DCI format 0_1 ​​for scheduling the PUSCH. d .

[0063] When 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 activated UL BWP b for each carrier f and serving cell c, the UE may also use the same RS resource index q as the PUCCH transmission within the PUCCH resource d .

[0064] In the case where PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with the spatial setting for PUCCH transmission, or in the case where PUSCH transmission is scheduled by DCI format 0_1 that does not contain the SRI field, or in the case where the power control setting for SRI-based PUSCH is not provided to the UE, the UE can also use the RS resource index q with ID zero of the path loss reference RS. d 。

[0065] In the case of PUSCH transmission configured by configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration contains specific parameters (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q can also be provided to the UE through the path loss reference index (e.g., pathlossReferenceIndex) within the specific parameters. d 。

[0066] In the case of PUSCH transmission configured by configured grant configuration, if the configured grant configuration does not contain specific parameters, the UE can also determine the RS resource index q according to the value of the ID of the path loss reference RS mapped to the SRI field in the DCI format used to activate PUSCH transmission. d 。In the case where the DCI format does not contain the SRI field, the UE can also determine the RS resource index q with ID zero of the path loss reference RS. d 。

[0067] <PUCCH Transmission Power Control>

[0068] In addition, in NR, the transmission power of PUCCH is controlled based on the TPC command (also known as value, increment / decrement value, correction value, indication value, etc.) represented by the value of a specific field (also known as TPC command field, first field, etc.) in the DCI.

[0069] For example, using the index l of the power control adjustment state, the transmission power (P PUCCH,b,f,c (i,q u ,q d ,l)) of PUCCH in the PUCCH transmission opportunity (transmission occasion) (also known as transmission period, etc.) i for the activated UL BWP b of carrier f of serving cell c can also be represented by the following formula (2).

[0070]

[0071] The power control adjustment state may also be referred to as a PUCCH power control adjustment state, a first or second state, or the like.

[0072] Furthermore, the PUCCH transmission opportunity i is a specific period for transmitting the PUCCH, and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0073] In formula (2), P CMAX,f,c (i) For example, the transmission power of the user terminal set for the carrier f of the serving cell c in the transmission opportunity i (also referred to as the maximum transmission power, the UE maximum output power, etc.). O_PUCCH,b,f,c (q u ) is, for example, a parameter related to a target receiving power set for activating UL BWP b of carrier f of serving cell c in transmitting opportunity i (for example, also referred to as a parameter related to a transmitting power offset, a transmitting power offset P0, or a target receiving power parameter, etc.).

[0074] M PUCCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to the PUCCH for transmission opportunity i in the activated UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (q d ) is, for example, an index q of a reference signal for a downlink BWP (path loss reference RS, path loss measurement DLRS, PUCCH-PathlossReferenceRS) associated with an activated UL BWP b of a carrier f of a serving cell c used in a user terminal. d To calculate the path loss.

[0075] Δ F_PUCCH (F) is a high-level parameter provided for each PUCCH format. TF,b,f,c (i) is a transmission power adjustment component (offset) for UL BWP b of carrier f of serving cell c.

[0076] g b,f,c (i,l) is the value of the TPC command of the power control adjustment state index l based on the activated UL BWP of the serving cell c and the carrier f of the transmission opportunity i (e.g., power control adjustment state, accumulated value of TPC command, closed-loop based value, PUCCH power adjustment state).

[0077] Alternatively, when the UE is provided with information indicating two PUCCH power control adjustment states (two-PUCCH-PC-AdjustmentStates) and PUCCH spatial relation information (PUCCH-SpatialRelationInfo), l = {0, 1}; when the UE is not provided with information indicating two PUCCH power control adjustment states or PUCCH spatial relation information, l = 0.

[0078] When the UE obtains the TPC command value from DCI format 1_0 or 1_1 and is provided with PUCCH spatial relation information, the UE can also obtain the mapping between the PUCCH spatial relation information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) according to the index provided by P0 ID for PUCCH (p0-PUCCH-Id within PUCCH-PowerControl within PUCCH-Config). When the UE receives an activation command containing the value of the PUCCH spatial relation information ID, the UE can also determine the value of the closed-loop index that provides the value of l through the link to the corresponding P0 ID for PUCCH.

[0079] When the UE activates the UL BWP b for the carrier f of the serving cell c and is provided with the setting of the P O_PUCCH,b,f,c (q u ) value for the corresponding PUCCH power adjustment state l by a higher layer, g b,f,c (i, l) = 0, where k = 0, 1,..., i. When the UE is provided with PUCCH spatial relation information, the UE can also determine the value of l based on the PUCCH spatial relation information associated with the P0 ID for PUCCH corresponding to q u and the closed-loop index value corresponding to l. u

[0080] q u can also be the PUCCH P0 ID (p0-PUCCH-Id) of the PUCCH P0 (P0-PUCCH) within the PUCCH P0 set (p0-Set).

[0081] <SRS Transmission Power Control>

[0082] ​For example, using the index l of the power control adjustment state, the transmission power (P) of the SRS in the transmission occasion (also called transmission period, etc.) i of the measurement reference signal (Sounding Reference Signal (SRS)) of the activated UL BWP b of the carrier f of the serving cell c is calculated. SRS,b,f,c (i,q s ,l)) can also be expressed by the following formula (3).

[0083] The power control adjustment state may also be referred to as an SRS power control adjustment state, a value based on a TPC command, an accumulated value of a TPC command, a closed-loop based value, a first or second state, etc. l may also be referred to as a closed-loop index.

[0084] Furthermore, the SRS transmission opportunity i is a specific period for transmitting the SRS and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0085]

[0086] In formula (3), P CMAX,f,c (i) is, for example, the UE maximum transmission power for carrier f of serving cell c in SRS transmission opportunity i. O_SRS,b,f,c (q s ) For example, by activating UL BWP b and SRS resource set q for carrier f of serving cell c s Parameters related to the target received power provided by p0 (provided by SRS-ResourceSet and SRS-ResourceSetId) (for example, also referred to as parameters related to the transmit power offset, transmit power offset P0, or target received power parameters, etc.).

[0087] M SRS,b,f,c (i) is the SRS bandwidth represented by the number of resource blocks for SRS transmission opportunity i on activated UL BWP b for carrier f with serving cell c and subcarrier spacing μ.

[0088] α SRS,b,f,c (q s ) by activating UL BWP b and SRS resource set q for serving cell c and carrier f with subcarrier spacing μ s , α (e.g., alpha) is provided.

[0089] PL b,f,c(q d ) For example, the activation DL BWP for serving cell c and SRS resource set q s , the UE uses the RS resource index q d Calculated DL path loss estimate [dB]. RS resource index q d Is the same as SRS resource set q s The associated path loss reference RS (DL RS for path loss measurement, for example, provided by pathlossReferenceRS) is an SS / PBCH block index (for example, ssb-Index) or a CSI-RS resource index (for example, csi-RS-Index).

[0090] h b ,f,c(i,l) is the SRS power control adjustment state for the activated UL BWP and SRS transmission opportunity i for carrier f of serving cell c. In the case where the SRS power control adjustment state setting (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for SRS transmission and PUSCH transmission, h b ,f,c(i,l) and the current PUSCH power control adjustment state f b ,f,c(i,l) are the same.

[0091] The transmission opportunity i of PUSCH, PUCCH and SRS can also be determined by the time slot index n within the system frame number SFN. s ,f μ , the first symbol S in the slot, and the number of consecutive symbols L. When a PUSCH of repetition type B is transmitted, the transmission opportunity of the PUSCH may be a nominal repetition.

[0092] (Power requirements)

[0093] In NR, the response to the problem of Maximum Permitted Exposure (MPE) (or electromagnetic power density exposure) is studied. For health and safety reasons, UE is required to meet the Federal Communication Commission (FCC) regulations regarding maximum radiation to the human body.

[0094] For example, in Rel.15NR, in order to limit exposure, a restriction using the power management maximum power reduction (Power-management Maximum Power Reduction (P-MPR), the maximum allowed UE output power reduction) is specified. For example, in the case of non-carrier aggregation (CA), the UE maximum output power P CMAX,f,c is set to the corresponding P UMAX,f,c (measured maximum output power, measured set maximum UE output power) satisfies the following formula (4).

[0095] P Powerclsss +ΔP tBE -MAX(MAX(MPR f，c , A-MPR t，c )+ΔMB P，n , P-MPR f，c )-MAX{T(MAX(MPR f，c , A-MPR f，c )), T(P-MPR f，c}≤P UMAX.f.c ≤EIRP max (4)

[0097] EIRP max Set the corresponding measurement peak to the maximum value of the equivalent radiated power (Effective Isotropic Radiated Power (EIRP)). P-MPR f,c Let P-MPR be a value indicating a reduction in the maximum output power permitted for carrier f of serving cell c. f ,c is imported into the set UE maximum output power P of carrier f of serving cell c CMAX,f,c The corresponding total radiated power P TMAX,f,c Become a P TMAX,f,c ≤TRP max .

[0098] In the case of carrier aggregation (CA), the maximum UE output power P CMAX,f,c is set to the corresponding P UMAX,f,c The following formula (5) is satisfied.

[0099] P Powerclass -MAX(MAX(MPR, A-MPR))+ΔMB P，n ,P-MPR)-MAX{T(MAX(MPR,A-MPR)),T(P-MPR)}≤P UMAX ≤EIRP max (5)

[0100] Measured P for carrier aggregation UMAX Defined as P UMAX =Σ c,f(c) P UMAX,f,c Here, P UMAX is the measured power P of the carrier f = f(c) serving cell c UMAX,f,c The linear value of the measured total radiated power P of the carrier aggregation TMAX Defined as P TMAX =10log 10 Σ c,f(c) P TMAX,f,c Here, P TMAX is the total radiated power P of carrier f = f(c) serving cell c TMAX,f,c The linear value of the measured value. For the total radiated power P TMAX , the boundary is defined as P TMAX ≤TRP max .

[0101] That is, the UE can set its maximum output power as P CMAX , so that the peak EIRP (P UMAX ) is within the range of the lower limit and the upper limit, and the measured total radiated power P TMAX Satisfy P TMAX ≤TRP ma .

[0102] (Multiple TRP)

[0103] In NR, one or more transmission / reception points (Transmission / Reception Point (TRP)) (Multi-TRP (M-TRP)) are studied to perform DL transmission to the UE using one or more panels (multi-panels). In addition, the UE is studied to perform UL transmission to one or more TRPs.

[0104] However, in future wireless systems (e.g., NR after Rel.17), research is underway to use a single DCI (single DCI, S-DCI) for repeated PUSCH transmissions of multiple TRPs (MTRP PUSCH repetition) to indicate multiple (e.g., 2) SRS resource identifiers (SRS Resource Indicator (SRI))) / Transmitted Precoding Matrix Indicator (TPMI)).

[0105] For example, in the case of codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI) and TPMI. In the case of non-codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI. In addition, SRI may be specified to the UE through DCI or provided through high-layer parameters.

[0106] In the case where a single DCI indicates multiple SRI / TPMIs, the following Option 1 or Option 2 is considered.

[0107] - Option 1: Indicating SRI / TPMI (values) for multiple (eg, 2) TRPs using a field for indicating multiple (eg, 2) SRI / TPMIs;

[0108] - Option 2: A field indicated to indicate one SRI / TPMI is provided with code points corresponding to values ​​of a plurality of (for example, 2) SRI / TPMIs.

[0109] In Option 1, the code point of each of the multiple SRI / TPMI fields may correspond to a TPMI value. The correspondence (association) between the SRI / TPMI field and the SRI / TPMI value may also be pre-defined in the specification. In addition, the correspondence (association) between the SRI / TPMI field and the SRI / TPMI value may use the correspondence specified up to Rel. 16, or may be the correspondence specified after Rel. 17. The correspondence between the SRI / TPMI field and the SRI / TPMI value may also be different for each of the multiple SRI / TPMI fields.

[0110] In Option 2, a code point indicating one SRI / TPMI field may also correspond to multiple (e.g., 2) SRI / TPMI values. The correspondence (association) between the SRI / TPMI field and the SRI / TPMI value may be pre-specified in the specification, or may be notified / set / activated through RRC signaling / MAC CE.

[0111] In addition, research is underway to dynamically indicate / switch single PUSCH transmission / repeated transmission of PUSCH using a single TRP (SingleTRP (STRP)) and repeated transmission of PUSCH using multiple TRPs (Multi TRP (MTRP)) through DCI. This dynamic switching can utilize specific fields included in the DCI specified up to Rel.16, or specific fields specified after Rel.17 (for example, fields for specifying STRP or MTRP operations).

[0112] In addition, the "dynamic switching" in the present disclosure may also mean "switching by using at least one of high-layer signaling and physical layer signaling". In addition, the "switching" in the present disclosure may also be interchangeably written with switching, change, changing, application, indication, setting, etc.

[0113] (PHR)

[0114] In future wireless communication systems (e.g., NR), the UE sends a PH report (Power Headroom Report (PHR)) containing information about the power headroom (PH) of each serving cell to the network. The network can use PHR to control the uplink transmission power of the UE.

[0115] In the case where M-TRP PUSCH is supported / configured / activated and reporting of two PHRs for two TRPs is configured / activated, including two PHRs (a first PHR and a second PHR) in the PHR MAC CE is under study. Reporting of two PHRs for two TRPs can also be configured to the UE via a higher layer parameter (RRC parameter).

[0116] Here, the first PHR may be reported in the same manner as Rel. 15 / 16. The second PHR may be a PHR of a TRP different from the first PHR. The second PHR may be reported as an actual PHR or as a virtual PHR.

[0117] The actual PHR is a PHR based on actual PUSCH transmission, and may also be referred to as real PHR. The actual PHR may also be calculated based on a power control parameter used for actual PUSCH transmission.

[0118] A virtual PHR is a PHR that is independent of actual PUSCH transmission (based on reference PUSCH transmission), and may also be referred to as a reference PHR, a PHR that follows a reference format, etc. The virtual PHR may be calculated based on the default power control parameters already specified in Rel.15 / 16NR, or may be calculated based on new default power control parameters.

[0119] When the UE determines that the type 1 power headroom report of the activated serving cell is based on the actual PUSCH transmission, for the PUSCH transmission opportunity i on the activated UL BWP b of the carrier f of the serving cell c, the UE calculates the type 1 power headroom report as shown in the following formula (6). The PHR in formula (6) can also be called the actual PHR.

[0120]

[0121] When the UE determines that the type 1 power headroom report of the activated serving cell is sent based on the reference PUSCH, for the PUSCH transmission opportunity i on the activated UL BWP b of the carrier f of the serving cell c, the UE calculates the type 1 power headroom report as shown in the following formula (7). The PHR in formula (7) can also be called a virtual PHR.

[0122]

[0123] Here, P CMAX,f,c (i) Line (P CMAX,f,c (i) The upper part of P is added with ~) By assuming MPR = 0dB, A-MPR = 0db, P-MPR = 0dB, ΔT C = 0dB. A-MPR means additional MAR (Additional MPR). For the remaining parameters, P O_PUSCH,b,f,c (j) and α b,f,c (j) Using P O_NOMINAL_PUSCH,f,c (0), p0-PUSCH-AlphaSetId=0, PL b,f,c (q d )Use pusch-PathlossReferenceRS-Id=0, l=0.

[0124] (PHR MAC CE)

[0125] The PHR may also be transmitted through MAC (Medium Access Control) signaling using 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).

[0126] In NR, a single entry PHR MAC CE related to the Primary Cell (PCell) is supported.

[0127] Figure 3 This is a diagram showing an example of a single-entry PHR MAC CE in Rel. 16 NR. This MAC CE is composed of 2 octets (=16 bits). Figure 3 The 'R' respectively indicates a 1-bit reserved field, for example, a value set to '0'.

[0128] Figure 3 'PH (Type 1, PCell)' is a 6-bit field indicating an index related to a Type 1 PH of a primary cell (PCell). The index related to the PH is associated with a specific PH value (in decibel (dB)) (or level).

[0129] In addition, for example, type 1 PH may be a PH that takes PUSCH into consideration (for example, only the power of PUSCH is considered), type 2 PH may be a PH that takes PUCCH into consideration (for example, the power of both PUSCH and PUCCH is considered), and type 3 PH may be a PH that takes measurement reference signals (Sounding Reference Signal (SRS))) into consideration (for example, the power of PUSCH and SRS is considered).

[0130] Figure 3 'P CMAX,f,c ' indicates a 6-bit field, indicating the P used for the calculation of the above PH field CMAX,f,c The index associated with this P CMAX,f,c The relevant index is associated with the specific UE transmit power level (dB). CMAX,f,c It can also be referred to as the maximum transmission power (maximum allowed transmission power) set by the UE for the serving cell c of the carrier f. CMAX,f,c Also expressed as P CMAX , PCMAX, etc.

[0131] Figure 3The 'P' in the field may be a field related to the Power Management Maximum Power Reduction (P-MPR) or the maximum allowed UE output power reduction for the serving cell c, or a field associated with the Maximum Permitted Exposure (MPE). Figure 3 The 'MPE' of the UE may also be a field associated with the MPE. The 'P', 'MPE' and other fields may also be rewritten as the 'R' field by setting using higher layer signaling to the UE.

[0132] The 'P' field is set to 0 if the P-MPR value applied to meet the MPE requirement is less than a specific P-MPR value (e.g., P-MPR_00) when MPE reporting of FR2 is set (higher layer parameter mpe-Reporting-FR2) and the serving cell operates in FR2, otherwise it is set to 1.

[0133] In addition, the 'P' field may also indicate whether power backoff is applied for power management when the MPE report of FR2 is not configured or the serving cell operates in FR1. CMAX In the case where the fields have different values, the 'P' field is set to 1.

[0134] The 'MPE' field may also indicate the power backoff applied to meet the MPE requirement when MPE reporting for FR2 is set (higher layer parameter mpe-Reporting-FR2), the serving cell operates in FR2, and the 'P' field is set to 1. This field may also indicate an index corresponding to the measured P-MPR value (e.g., in dB units).

[0135] When the MPE report of FR2 is not configured, or the serving cell operates in FR1, or the 'P' field is configured to 0, an R field (R bit) may exist instead of the 'MPE' field.

[0136] In NR, it is also possible to support a multiple entry PHR MAC CE (multiple entry PHR MAC CE) containing multiple data similar to the single entry (2 octets) described above. The multiple entry PHR MAC CE may also include PH fields for the Primary Secondary Cell (PSCell) and the Secondary Cell (SCell). In addition, PCell and PSCell may also be referred to as Special Cell (SpCell).

[0137] Figure 4 is a diagram showing an example of a multi-entry PHR MAC CE in Rel.16NR. Figure 3 The same fields are not described repeatedly. Figure 4 The 6-bit field including the term 'PH' respectively represents the corresponding type (eg, types 1 to 3 described above) and a PH field for the cell.

[0138] In addition, the existence of the Type 2PH field of SpCell for other MAC entities can also be set by setting the higher-level parameter phr-Type2OtherCell to true.

[0139] Figure 4 The inclusion of 'P CMAX,f,c The 6-bit field of the term ' indicates the PH used in the calculation of the immediately preceding PH field. CMAX,f,c P CMAX,f,c field. Figure 4 'C i ' is a field indicating whether the PH field of the serving cell corresponding to the serving cell index i is included in the PHR. In addition, Figure 4 The maximum serving cell index is less than 8. If the maximum serving cell index is greater than 8, the MAC CE may include, for example, a serving cell index that can indicate i=31 or more. i ' field.

[0140] In addition, the number added to the "serving cell" in the PH field and the CMAX,f,c The number attached to the field may not mean the serving cell index, but may simply mean the number of values ​​contained in the MAC CE.

[0141] Figure 4The 'V' in the PH field indicates whether the PH value corresponding to the immediately following PH field is based on actual transmission (V = 0) or based on a reference format (V = 1). The PH based on the reference format can also be called a virtual PH. In addition, in the case of V = 1, the corresponding 'PH CMAX,c The ' field, 'MPE' field, etc. can also be omitted (omit).

[0142] The network may also send PHR setting information related to the conditions for triggering PHR to the UE. Here, the PHR setting information includes, for example, a prohibit timer, a periodic timer, a threshold for path loss change, etc. High-layer signaling may also be used in the notification. When the PHR triggering conditions are met, the UE triggers PHR.

[0143] (Maximum transmit power)

[0144] The maximum transmission power (maximum transmission power) P in panel p of carrier f serving cell c is shown as follows: CMAXpanel,f,c,p Example of setting. CMAXpanel,f,c,p It can also be written as P CMAX,f,c,p ).

[0145] Option 0

[0146] The UE may also receive a setting related to the maximum transmit power of each serving cell and each carrier (e.g., the same setting as Rel. 17), and determine the maximum transmit power of each panel based on the setting. CMAX,f,c The maximum transmission power of carrier f of service cell c can be set based on P CMAX,f,c To determine the maximum transmission power P of each panel p CMAX,f,c,p , or based on P CMAX,f,c With P CMAX,f,c,p The maximum transmission power P of each panel p is determined by the relationship CMAX,f,c,p The P CMAX,f,c And this relationship can be set to the UE through high-layer signaling / physical layer signaling. The following example is given for the maximum transmission power of each panel in this case.

[0147] Option 0-1

[0148] The UE can also determine the maximum transmission power P of panel p based on the following equation (8): CMAX,f,c,p N is the number of panels that are instructed to transmit simultaneously. That is, the maximum transmission power of each panel may also be the same.

[0149]

[0150] For example, when multiple panels are instructed to transmit simultaneously, N=2 may be used. When single panel transmission is instructed, N=1 may be used. Alternatively, N may follow the value set from the network (base station) through high-layer signaling / physical layer signaling, and at least one of the UE capabilities. N may also apply different values ​​in the case of single panel transmission and multi-panel transmission. Alternatively, N may be the maximum number of panels supported by the UE in UL transmission (for example, N=2), and the application of single panel transmission or simultaneous multi-panel transmission may not be indicated by the network.

[0151] Option 0-2

[0152] The UE can also determine the maximum transmission power P of panel p based on the following equation (9): CMAX,f,c,p 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 the panel p and may be different for each panel. That is, the maximum transmission power of each panel may be different.

[0153]

[0154] Np may also follow at least one of the value set by the network (base station) through high-layer signaling / physical layer signaling and UE capability. Np may also apply different values ​​in the case of single-panel transmission and multi-panel transmission.

[0155] 《Options 0-3》

[0156] The UE can also determine the maximum transmission power P of panel p based on the following formula (10): CMAX,f,c,p That is, the sum of the maximum transmission powers of the panels p may be the maximum transmission power of the UE. In this case, the maximum transmission powers of the panels may be the same, different, or some of the panels may have the same maximum transmission power.

[0157]

[0158] As a result, the maximum transmit power in panel p, the maximum transmit power of the entire panel, and their relationship become clear, and the UE can use appropriate transmit power to control simultaneous UL transmission of multiple panels.

[0159] (M-TRP PHR report of Rel.17)

[0160] In the repetition of the M-TRP PUSCH of Rel. 17, when the PHR MAC CE is reported in time slot n, the first PHR for the first TRP is reported in the same manner as Rel. 16. The second PHR for the second TRP may also be defined as follows (1)-(3).

[0161] (1) The first PHR is the actual PHR, and when the repetition of the PUSCH associated with the second TRP is in time slot n, the second PHR is the actual PHR.

[0162] (2) When the first PHR is an actual PHR and the PUSCH repetition slot associated with the second TRP is not n, the second PHR is a virtual PHR.

[0163] (3) The first PHR is a virtual PHR, and the second PHR is a virtual PHR.

[0164] The virtual PHR can also be calculated using the default power control parameters (p0, alpha (α), PL-RS, closedloopindex) of each TRP.

[0165] When twoPHRMode is provided in the activated UL BWP b of the carrier f providing the serving cell c to the UE, and two SRS resource sets whose usage is set to "codebook" or "non-codebook" by srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, the UE provides the following two types of first power headroom reports (1) and (2). In (1) and (2), it is premised that the UE provides the first type 1 PHR for the actual PUSCH repetition of the earliest PUSCH transmission started in the time slot associated with one SRS resource set.

[0166] (1) When the UE sends a PUSCH repetition associated with other SRS resource sets in time slot n, the UE provides a second type 1 power headroom report for the first actual PUSCH repetition associated with the other SRS resource sets overlapping with time slot n.

[0167] (2) Otherwise (if the condition of (1) is not satisfied), the UE provides a second type 1 power headroom report for the reference PUSCH transmission associated with other SRS resource sets.

[0168] (Notes)

[0169] In the present disclosure, "panel" may also represent the value (set of values) of UE capability as in Rel. 17. In addition, "panel" may also represent "UE antenna group" or other equivalent definitions.

[0170] The beam may also represent the spatial relationship / TCI / Spatial Relation Information (SRI). The TRP may also refer to the CORESETPool / SRS resource set.

[0171] In Simultaneous multi-panel Tx (STxMP), the following method can also be applied.

[0172] Single DCI (S-DCI) Space Division Multiplexing (SDM)

[0173] Method: Different layers / DMRS ports of a PUSCH are precoded separately and sent simultaneously from different UE beams / panels.

[0174] S-DCI frequency division multiplexing (FDM)-A mode: Different parts of the frequency domain resources of a PUSCH transmission opportunity are transmitted from different UE beams / panels.

[0175] S-DCI FDM-B mode: Two PUSCH transmission opportunities of the same / different RVs of the same TB are transmitted from different UE beams on non-overlapping frequency domain resources and the same time domain resources.

[0176] / Panel sending method.

[0177] S-DCI SFN-based transmission method: The same PUSCH / DMRS is transmitted simultaneously from two different UE beams / panels.

[0178] S-DCI spatial domain repetitive transmission: 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.

[0179] M-DCI mode: overlap (completely / partially overlap in time domain, completely / partially overlap in frequency domain)

[0180] Partially overlapping or non-overlapping) 2 PUSCHs are sent from 2 different UE beams / panels.

[0181] Considering that multiple TRPs are used as a premise in simultaneous multi-panel transmission, one panel corresponds to one TRP. Therefore, in the present disclosure, the PUSCH associated with the panel can also be referred to as the PUSCH associated with the TRP, and the PHR / power of the panel can also be referred to as the PHR / power of the TRP.

[0182] In the present disclosure, it is considered that a UE receives PUSCH / SRS in one panel and receives PUCCH / SRS in time resources that completely / partially overlap with PUSCH reception in other panels (simultaneous multi-panel reception).

[0183] The "single panel transmission" in the present disclosure may also be used only for the case where there is a PUSCH transmission with a single panel and there is no PUCCH / SRS transmission in other panels on time resources that completely / partially overlap with the PUSCH transmission. In addition, in this case, as to how to handle the PHR report, it is necessary to study so that, for example, in the case of PUSCH+SRS, a type 1 PHR based on PUSCH and a type 3 PHR based on SRS are reported.

[0184] Alternatively, the "single-panel transmission" in the present disclosure may also be applied to a situation where there is a PUSCH transmission with a single panel, and there is a PUCCH / SRS transmission with some other panel on time resources that completely / partially overlap with the PUSCH transmission.

[0185] (Concept of simultaneous UL transmission of multiple panels)

[0186] In the case of simultaneous UL transmission of multiple panels, if the limitation of the maximum UL transmission power is taken into consideration, at least one of the following assumptions 1-1 to 1-3 is assumed.

[0187] [Scenario 1-1]

[0188] Consider the maximum UL transmission power of each panel. Assume that the actual transmission power of PUSCH / PUCCH / SRS of panel p in serving cell c is less than the maximum UL transmission power of panel p in serving cell c. That is, P panel_actual,c,p ≤P panel_max,c,p The maximum UL transmission power of panel p in serving cell c can also be calculated by any of the above equations (8)-(10) of (maximum transmission power). In addition, when the carrier is not determined, the element of carrier f can also be removed.

[0189] P panel_actual,c,p is the actual transmission power of serving cell c and panel p, P panel_max,c,p is the maximum UL transmit power of serving cell c, panel p.

[0190] [Scenario 1-2]

[0191] Consider the maximum UL transmission power of each cell. Assume that the total actual transmission power of PUSCH / PUCCH / SRS from multiple panels of serving cell c is less than the maximum UL transmission power of serving cell c. That is, Σ p P panel_actual,c,p ≤P cell_max,c In addition, the maximum UL transmission power of the serving cell c may also be the value determined in Rel.17 (ie, P CMAX,f,c ). panel_actual,c,p is the actual transmission power of panel p serving cell c, P cell_max,c is the maximum UL transmit power of serving cell c.

[0192] [Scenario 1-3]

[0193] Both the maximum UL transmission power of each panel and the maximum transmission power of each cell may be considered. The transmission power may also satisfy both conditions of assumption 1 and assumption 2.

[0194] (Concept of single-panel UL delivery)

[0195] In the case of supporting dynamic switching between single-panel transmission and multi-panel simultaneous transmission, if the limitation of the maximum UL transmission power is taken into consideration, at least one of the following assumptions 2-1 and 2-2 is assumed.

[0196] [Scenario 2-1]

[0197] Consider the maximum UL transmission power of each panel. Assume that the actual transmission power of PUSCH / PUCCH / SRS transmitted by a single panel in panel p in serving cell c is less than the maximum UL transmission power of panel p in serving cell c. That is, P panel_actual,c,p ≤P panel_max,c,p Established.

[0198] P panel_actual,c,p is the actual transmission power of serving cell c and panel p, P panel_max,c,p is the maximum UL transmit power of serving cell c, panel p.

[0199] [Scenario 2-2]

[0200] Consider the maximum UL transmission power of each cell. Assume that the total actual transmission power of PUSCH / PUCCH / SRS from a single panel of serving cell c is less than the maximum UL transmission power of serving cell c. That is, P panel_actual,c,p ≤P cell_max,c In addition, the maximum UL transmission power of the serving cell c may also be the value determined in Rel.17 (ie, P CMAX,f,c ).

[0201] P panel_actual,c,p is the actual transmission power of panel p serving cell c, P cell_max,c is the maximum UL transmit power of serving cell c.

[0202] In addition, in the case of single-panel delivery, P panel_actual,c,p , P cell_max,c If they are the same, then scenario 2-1 and scenario 2-2 are the same.

[0203] (analyze)

[0204] When supporting multi-panel simultaneous UL transmission, although the UE transmits UL from two panels simultaneously, the reporting / calculation of PHR at this time is not clear. 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 not clear. As a result, transmission control cannot be properly performed, and there is a concern that communication throughput will be reduced.

[0205] Therefore, the inventors of the present invention have conceived a wireless communication method capable of appropriately performing transmission power control for each panel.

[0206] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0207] In the present disclosure, "A / B" and "at least one of A and B" may be replaced with each other. In addition, in the present disclosure, "A / B / C" may also mean "at least one of A, B, and C".

[0208] In the present disclosure, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. may also be mutually rewritten. In the present disclosure, support, control, controllable, operate, and operate may also be mutually rewritten.

[0209] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, high-layer parameters, fields, Information Element (IE), settings, etc. may also be mutually overwritten. In the present disclosure, Medium Access Control (MAC) Control Element (CE), update commands, activation / deactivation commands, etc. may also be mutually overwritten.

[0210] In the present disclosure, the high-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.

[0211] In the present disclosure, MAC signaling may also use, for example, MAC Control Element (MACCE), MAC Protocol Data Unit (PDU), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0212] In the present disclosure, the physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI)), etc.

[0213] In the present disclosure, index, identifier (ID), indicator, resource ID, etc. may also be mutually overwritten. In the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may also be mutually overwritten.

[0214] In the present disclosure, panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmission entity, transmission / reception point (TRP)), base station, spatial relation information (SpatialRelationInformation(SRI)), spatial relation, SRS resource indicator (SRS Resource Indicator(SRI)), control resource set (COntrol REsource SET(CORESET)), physical downlink shared channel (Physical Downlink Shared Channel(PDSCH)), codeword (Codeword(CW)), transport block (TransportBlock(TB)), reference signal (ReferenceSignal(RS)), antenna port (e.g., demodulation reference signal (DeModulation ReferenceSignal(DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (Code Division Multiplexing(CDM)) group), reference signal group, CORESET group, physical uplink control channel (Physical Uplink Control Channel (PUCCH)) group, PUCCH resource group), resources (for example, reference signal resources, SRS resources), resource sets (for example, reference signal resource sets), CORESET pool, downlink transmission configuration indication state (Transmission Configuration Indication state (TCI state)) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), common TCI state (common TCI state), Quasi-Co-Location (Quasi-Co-Location (QCL)), QCL assumptions, etc. can also be rewritten with each other.

[0215] In addition, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) can also be overwritten with each other. "Spatial relationship information" can also be overwritten with "a collection of spatial relationship information", "one or more spatial relationship information", etc. TCI state and TCI can also be overwritten with each other.

[0216] In addition, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) can also be overwritten with each other. "Spatial relationship information" can also be overwritten with "a collection of spatial relationship information", "one or more spatial relationship information", etc. TCI state and TCI can also be overwritten with each other.

[0217] In the present disclosure, multi-panel simultaneous transmission (simultaneous multi-panel transmission) and multi-panel simultaneous UL transmission (simultaneous multi-panel UL transmission) can also be overwritten with each other. In the present disclosure, support and being set / indicated can also be overwritten with each other. In the present disclosure, loop, power control loop, power control loop index, closed loop, open loop, power control adjustment state can also be overwritten with each other. In the present disclosure, transmission power and output power can also be overwritten with each other.

[0218] The power limit in the present disclosure may also refer to a limit based on the maximum transmission power. The PHR in the present disclosure may also refer to an actual PHR, a virtual PHR, or both an actual PHR and a virtual PHR, unless otherwise specified. The p and q in the present disclosure may also refer to a panel index.

[0219] In the present disclosure, multiple TRPs (MTRP, M-TRP), multiple TRP systems, multiple TRP transmissions, and multiple PDSCHs can also be rewritten mutually.

[0220] In the present disclosure, "PHR", "PH", "PH field", "PH value", etc. may also be mutually overwritten. In addition, in the present disclosure, a PH field may also be mutually overwritten with a PH field of a certain type (eg, type 1 / 2 / 3 / X).

[0221] In addition, in the present disclosure, the PHR MAC CE may also include fields for each of the multiple serving cells (P CMX field, P field, etc.).

[0222] In addition, in the present disclosure, “(for / corresponding to / ) PH field” CMAX The field / P-MPR value / power backoff" may also be combined with the "P value for / corresponding to / for the PUSCH sent by the PH field". CMAX The fields / P-MPR value / power backoff" can also be overwritten with each other.

[0223] In the present disclosure, P-MPR, P-MPR value and power backoff may also be overwritten with each other.

[0224] (Wireless Communication Method)

[0225] <First Embodiment>

[0226] In the case of supporting simultaneous uplink (UL) transmission from multiple panels, the UE receives a setting of a restriction related to the transmission power of each panel / each cell. Based on the setting, the UE controls the transmission (reporting) of at least one of a power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission (first PHR) and a PHR not dependent on the actual PUSCH transmission (second PHR). Figure 5 ). The above-mentioned limitation may also be the maximum UL transmission power, for example, the maximum UL transmission power of each panel in equations (8) to (10), or the maximum UL transmission power of each cell determined in the same manner as equations (8) to (10). The maximum UL transmission power may also be determined by the UE based on its capabilities.

[0227] [Method 1-1]

[0228] In the scenario 1-1 of multi-panel simultaneous UL transmission, the maximum UL transmission power of each panel is considered. When the PUSCH transmission of the serving cell c is multi-panel simultaneous UL transmission, the UE can also report to indicate the PHR of the PUSCH of the serving cell c through the following options.

[0229] Option 1

[0230] The UE reports 2 actual PHRs for the 2 panels. The UE may also calculate the 2 actual PHRs based on the power limit of each panel as shown in equation (11).

[0231]

[0232] 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 based on the configuration parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) from the network used in PUSCH transmission. p is the panel index. P cell_max,c,p It is also possible to use P in the above formulas (8) to (10) CMAXpanel,f,c,p (P CMAX,f,c,p ) is calculated similarly.

[0233] Option 2

[0234] The UE reports one actual PHR of the two panels. The PHR of each panel is calculated based on the power limit value of each panel, similarly to Option 1 of this method. The UE may also apply any of the following (1) to (5).

[0235] (1) The UE always reports the PHR associated with the first panel / second panel.

[0236] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0237] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0238] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0239] (5) The UE reports the average value of the PHR of multiple panels.

[0240] In the present disclosure, the first panel / second panel may also represent the first / second SRI / TCI state, the SRS resource set of the minimum / maximum ID, the panel of the minimum / maximum ID, the TRP of the minimum / maximum ID (when one panel is associated with the TRP).

[0241] Option 3

[0242] The UE reports the PHR according to option 1 / 2, and the UE may further report two PHRs for two panels based on the power limit of each cell as shown in the following equation (12).

[0243]

[0244] 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 based on the configuration parameters used in PUSCH transmission (P0, α, PL-RS, closedloopindex, resource allocation, etc.). p is the panel index. cell_max,c It is also possible to use P in the above formulas (8) to (10) CMAXpanel,f,c,p (P CMAX,f,c,p ) is calculated similarly. This option is intended to provide a PHR reference for single-panel transmission when multiple panels transmit simultaneously based on the power limit of each panel and a single panel transmits based on the power limit of each cell.

[0245] Option 4

[0246] The UE may also report PHR according to option 1 / 2, and the UE may further report PHR for one of the two panels based on the power limit of the cell. For each panel, PHR may also be based on the cell power limit, similar to xPHR in option 3. c,p (Equation (12)) is calculated in the same manner. The UE may also apply any of the following (1) to (5).

[0247] (1) The UE always reports the PHR associated with the first panel / second panel.

[0248] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0249] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0250] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0251] (5) The UE reports the average value of the PHR of multiple panels.

[0252] [Method 1-2]

[0253] In scenario 2-1, the maximum UL transmission power of each panel is considered. In the case where the PUSCH transmission of serving cell c is a single-panel transmission of panel p, the UE reports the PHR of the PUSCH of serving cell c according to the following options.

[0254] Option 1

[0255] The UE reports the actual PHR of a serving cell based on the power limit of each cell, as shown in equation (13). The PHR is the actual PHR of panel p, which is calculated based on the maximum UL transmit power of the serving cell and the transmit power of the PUSCH calculated by the setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) used in PUSCH transmission, as in Rel.17.

[0256]

[0257] The maximum UL transmission power and power control parameters of the serving cell can also be determined in the same manner as Rel. 17. This option can also be used together with the assumption 2-2 of the single-panel assumption. That is, in single-panel transmission, the maximum power limit of each cell is considered.

[0258] Option 2

[0259] The UE may also report an actual PHR to the serving cell based on the transmit power control for each panel, as shown in equation (14). The PHR is the actual PHR of panel p, which is calculated based on the maximum UL transmit power of the panel and the transmit power of the PUSCH calculated by the setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) used in PUSCH transmission.

[0260]

[0261] The maximum UL transmission power of the panel can also be determined in the same way as in equations (8) to (10). The power control parameters can also be determined in the same way as in Rel. 17. This option can also be used together with the assumption 2-1 of single-panel transmission. That is, the maximum transmission power limit of each panel can also be considered for single-panel transmission. In addition, in single-panel transmission, when the maximum transmission power of the panel is the same as the maximum transmission power of the cell, option 2 becomes the same as option 1.

[0262] Option 3

[0263] The UE may also report 2 PHRs for 2 panels for the serving cell. The UE may also report the actual PHR of panel p based on the power limit of each cell and report the virtual PHR of another panel q based on the limit of each cell. The actual PHR of panel p is reported as option 1.

[0264] Similar to Rel.17, the virtual PHR of other panels q is calculated based on the maximum UL transmit power of the serving cell and the virtual transmit power of PUSCH calculated by default setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) (Formula (15)).

[0265]

[0266] q is the panel index. The maximum UL transmission power and default power control parameters of the serving cell can also be determined in the same way as Rel. 17. This option can also be used together with the concept 2-2 of single panel transmission.

[0267] Option 4

[0268] The UE may also report 2 PHRs for 2 panels to the serving cell. The UE may also report the actual PHR of panel p based on the power limit of each panel and report the virtual PHR of another panel q based on the power limit of each panel. The actual PHR of panel p may also be reported as option 2.

[0269] The virtual PHR of other panels q can also be calculated as in formula (16) based on the maximum UL transmit power of the panel and the virtual transmit power of PUSCH calculated by the default setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.).

[0270]

[0271] The default power control parameters can also be determined in the same way as Rel.17. This option can also be used together with the assumption 2-1 of single-panel transmission. That is, the maximum transmission power limit of each panel is considered for single-panel transmission. In single-panel transmission, when the maximum transmission power of the panel is the same as the maximum transmission power of the cell, option 4 is the same as option 3.

[0272] Option 5

[0273] The UE reports PHR according to option 1 or 3 (based on the restriction of each cell), and the UE may further report 2 PHRs for 2 panels based on the restriction of each panel as follows.

[0274] The PHR for panel p is calculated as shown in formula (17) based on the maximum UL transmit power of the panel and the PUSCH transmit power calculated by the setting parameters used in PUSCH transmission (P0, α, PL-RS, closedloopindex, resource allocation, etc.).

[0275]

[0276] Alternatively, for panel q, the PHR of panel p may be calculated based on the virtual transmission power as in equation (18).

[0277]

[0278] For the PHR of other panels, q can also be calculated as in (19) based on the default setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) calculated according to the maximum UL transmit power of the panel and the virtual transmit power based on PUSCH.

[0279]

[0280] Option 6

[0281] The UE may also report the PHR according to option 1 or 3 (restriction based on each cell), and thus report one of the PHRs of the two panels based on restriction based on each panel as follows.

[0282] For each panel, with option 5 xPHR c,p 、xPHR c,q The PHR is calculated in the same manner. The UE may apply any of the following (1) to (6) to report the PHR of at least one of the two panels.

[0283] (1) The UE always reports the PHR associated with the first panel / second panel.

[0284] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0285] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0286] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0287] (5) The UE reports the average value of the PHR of multiple panels.

[0288] (6) Always report the PHR of panel p, i.e. the PHR associated with the panel used in the single panel transmission.

[0289] According to options 5 and 6, in the case of simultaneous transmission of multiple panels, the power limit is based on each panel, and on the other hand, in the case of power limit based on each cell in single panel transmission, PHR reference can be appropriately provided.

[0290] [Method 1-3]

[0291] In the scenario 2-1 of single-panel reception, the maximum UL transmission power of each panel is considered. When there is no PUSCH transmission in the serving cell c, the UE applies any of the following options 1 to 4 to report the virtual PHR of the PUSCH of the serving cell c.

[0292] Option 1

[0293] The UE reports two virtual PHRs to the two panels of the serving cell. The virtual PHR of each panel is calculated based on the power limit of each cell. The virtual PHR of each panel can also reuse option 3 of method 1-2.

[0294] Option 2

[0295] The UE reports two virtual PHRs for the two panels of the serving cell. The virtual PHR of each panel is calculated based on the power limit of each panel. The virtual PHR of each panel can also reuse option 4 of method 1-2.

[0296] Option 3

[0297] 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 of each cell, similar to Option 1 / 2.

[0298] Option 4

[0299] The UE reports one PHR to the two panels of the serving cell. The virtual PHR of each panel is calculated based on the power limit of each panel, similar to Option 2. For Options 3 and 4, any of the following (1) to (5) may also be applied.

[0300] (1) The UE always reports the PHR associated with the first panel / second panel.

[0301] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0302] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0303] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0304] (5) The UE reports the average value of the PHR of multiple panels.

[0305] Option 5

[0306] A combination of option 1 / 3 and option 2 / 4 may also be applied. That is, the UE may also report a virtual PHR based on the restriction for each cell according to option 1 / 3, and additionally report a virtual PHR based on the restriction for each panel according to option 2 / 4. Thus, in the case where multiple panels simultaneously transmit a power restriction based on each panel, and a single panel transmits a power restriction based on each cell, a reference to the PHR can be provided for both the simultaneous transmission of multiple panels and the transmission of a single panel.

[0307] <Second Embodiment>

[0308] In the case of supporting simultaneous uplink (UL) transmission from multiple panels, the UE receives a setting of a restriction related to the transmission power of each panel / each cell. Based on the setting, the UE controls the transmission (reporting) of at least one of a power headroom (PHR) (first PHR) based on actual physical uplink shared channel (PUSCH) transmission and a PHR (second PHR) not depending on actual PUSCH transmission. Figure 5 ). At least one of the first PHR and the second PHR may also be sent based on a single panel.

[0309] [Method 2-1]

[0310] In the case of assumption 1-2 of multi-panel simultaneous transmission, the maximum UL received power of each cell is considered. In the case of multi-panel simultaneous transmission of PUSCH of serving cell c, UE reports the PHR of PUSCH of serving cell c according to the following options.

[0311] Option 1

[0312] The UE reports an actual PHR to the serving cell. The UE calculates the maximum UL transmit power of the cell based on the maximum UL transmit power of the cell and the sum of the transmit powers of PUSCHs associated with multiple panels calculated by the setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) used in PUSCH transmission (Formula (20)). The maximum UL transmit power of the serving cell is determined in the same way as Rel.17.

[0313]

[0314] Option 2

[0315] The UE reports the PHR according to Option 1. Furthermore, the UE reports two PHRs for two panels (based on single panel transmission). For each panel, the UE calculates the PHR (Formula (21)) based on the maximum UL transmission power of the cell and the transmission power of the PUSCH associated with the panel calculated by the setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) used in PUSCH transmission.

[0316] The maximum UL transmission power of the serving cell is determined in the same manner as Rel.17.

[0317]

[0318] As a result, the UE reports the PHR as a reference for simultaneous transmission of multiple panels, and can also report the PHR as a reference for transmission of a single panel.

[0319] Option 3

[0320] The UE reports the PHR according to Option 1. Furthermore, the UE reports an actual PHR for two panels as follows (based on single panel transmission). For each panel, the PHR is calculated in the same manner as in Option 2. The UE may also apply any of the following (1) to (5).

[0321] (1) The UE always reports the PHR associated with the first panel / second panel.

[0322] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0323] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0324] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0325] (5) The UE reports the average value of the PHR of multiple panels.

[0326] As a result, the UE reports the PHR as a reference for simultaneous transmission of multiple panels, and can also report the PHR as a reference for transmission of a single panel.

[0327] [Method 2-2]

[0328] In the scenario 1-2 of simultaneous transmission of multiple panels, the maximum UL transmission power of each cell is considered. When the PUSCH transmission of serving cell c is a single-panel transmission of panel p, the UE reports the PHR of the PUSCH of serving cell c according to the following options. The PHR transmission of this method can also be based on the PHR transmitted by a single panel.

[0329] Option 1

[0330] The UE reports an actual PHR to the serving cell. As in Rel.17, the UE calculates the PHR (Equation (22)) based on the maximum UL transmit power of the serving cell and the PUSCH transmit power calculated using the configuration parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) used in PUSCH transmission.

[0331]

[0332] The maximum UL transmission power and power control parameters of the serving cell may also be determined in the same manner as Rel.17.

[0333] Option 2

[0334] The UE reports 2 PHRs for 2 panels. The UE reports the actual PHR of panel p and reports the virtual PHR of another panel q. As in Rel.17, the virtual PHR of another panel q is calculated based on the maximum UL transmit power of the serving cell and the virtual transmit power of PUSCH calculated by the default setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) (Formula (23)). q is the panel index.

[0335]

[0336] The maximum UL transmission power and power control parameters of the serving cell can be determined in the same manner as Rel.17.

[0337] Option 3

[0338] The UE reports the contents of option 1 / 2, and then the UE reports the virtual PHR (virtual multi-panel simultaneous transmission of PHR) as follows. The virtual multi-panel simultaneous transmission of PHR is calculated based on the maximum UL transmission power of the serving cell, the transmission power of the PUSCH associated with panel p calculated by the setting parameters used in PUSCH transmission (P0, α, PL-RS, closedloopindex, resource allocation, etc.), and the virtual transmission power of the PUSCH associated with panel q calculated by the default setting parameters (P0, α, PL-RS, closedloopindex, resource allocation, etc.) (Formula (24)). p, q are panel indices.

[0339]

[0340] The maximum UL transmission power and power control parameters of the serving cell and the default power control parameters may also be determined in the same manner as Rel.17.

[0341] Option 4

[0342] The UE reports the content of option 1 / 2, and then the UE reports the virtual PHR (virtual multi-panel sends PHR simultaneously) as follows.

[0343] The virtual multi-panel simultaneous transmission PHR is based on the maximum UL transmission power of the serving cell and the total virtual transmission power of PUSCH associated with multiple panels calculated by the default setting parameters (P0, α, PL-RS, closedloopindex), and is calculated in the same way as Rel.17 (Formula (25)).

[0344]

[0345] The maximum UL transmission power and power control parameters of the serving cell and the default power control parameters may also be determined in the same manner as Rel.17.

[0346] Through options 3 and 4, the UE reports the PHR as a reference for simultaneous transmission of multiple panels, and can further report the PHR as a reference for transmission of a single panel.

[0347] [Method 2-3]

[0348] In the scenario 1-2 of simultaneous transmission of multiple panels, the maximum UL transmission power of each cell can also be considered. When there is no PUSCH in the serving cell c, the UE reports the virtual PHR for PUSCH of the serving cell c according to the following options 1 and 2. The PHR of this method can also be a virtual PHR.

[0349] Option 1

[0350] The UE reports two virtual PHRs for two panels. The virtual PHR for each panel is calculated in the same manner as the virtual PHR of Option 2 of Method 2-2.

[0351] Option 2

[0352] The UE reports one virtual PHR among the PHRs of multiple panels. The virtual PHR of each panel is calculated in the same manner as the virtual PHR of Option 2 of Method 2-2. For Option 2, the following (1) to (5) can also be applied.

[0353] (1) The UE always reports the PHR associated with the first panel / second panel.

[0354] (2) The UE is configured / instructed by the network (base station) via physical layer / high layer signaling whether to report the PHR associated with the first panel / second panel.

[0355] (3) The UE decides which panel's PHR to report and reports the panel index together with the PHR.

[0356] (4) The UE reports the PHR with the largest / smallest PHR value among the PHRs of multiple panels.

[0357] (5) The UE reports the average value of the PHR of multiple panels.

[0358] Option 3

[0359] The UE reports the contents of option 1 / 2, and further, the UE reports a virtual PHR (virtual multi-panel simultaneous transmission PHR). The virtual multi-panel simultaneous transmission PHR is calculated in the same manner as the virtual multi-panel simultaneous transmission PHR in option 4 of method 2-2. With option 3, the UE reports the PHR as a reference for multi-panel simultaneous transmission, and can report the PHR as a reference for single-panel transmission.

[0360] <Third Embodiment>

[0361] In assumptions 1-3 of simultaneous transmission of multiple panels, both the maximum UL transmission power of each panel and the maximum transmission power of each cell are considered.

[0362] [Method 3-1]

[0363] When the PUSCH transmission of serving cell c is multi-panel simultaneous transmission, the UE applies a combination of method 1-1 and method 2-1 to report the PHR of the PUSCH of serving cell c. That is, the UE reports both the PHR according to method 1-1 and the PHR according to method 2-1.

[0364] [Method 3-2]

[0365] When the PUSCH transmission of the serving cell c is single-panel transmission, the UE applies a combination of method 1-2 and method 2-2 to report the PHR of the PUSCH of the serving cell c. That is, the UE reports both the PHR according to method 1-2 and the PHR according to method 2-2.

[0366] [Method 3-3]

[0367] When there is no PUSCH transmission in serving cell c, the UE applies a combination of method 1-3 and method 2-3 to report the PHR for the PUSCH of serving cell c. That is, the UE reports both the PHR according to method 1-3 and the PHR according to method 2-3.

[0368] <Notes>

[0369] In each of the above embodiments / modes, the actual PHR is calculated based on the actual PUSCH transmission and based on the power control parameters used in the PUSCH transmission and set. The virtual PHR is calculated based on the reference PUSCH transmission and based on the default power control parameters determined according to a predefined rule. The power control parameters are set from the network (base station) through physical layer signaling / high layer signaling.

[0370] In a single panel transmission, when one actual PHR and one virtual PHR are reported for two panels respectively, the actual PHR corresponds to the panel used in the actual PUSCH transmission / the panel associated with the actual PUSCH transmission and is calculated based on the actual PUSCH transmission. The virtual PHR corresponds to the other panels not used in the PUSCH transmission and is calculated based on the reference / virtual PUSCH transmission associated with the other panels.

[0371] The PHR of the present disclosure may also apply a single-entry PHR (for a single serving cell), a multiple-entry PHR (for multiple serving cells), or both a single-entry PHR (for a single serving cell) and a multiple-entry PHR (for multiple serving cells).

[0372] <Modification>

[0373] [Modification 1]

[0374] In the case of multiple cells (multiple serving cells), if PHR is transmitted in serving cell c1, the UE reports PHR of serving cell c2 as follows.

[0375] When the UE is configured with multiple cells for PUSCH transmission, and the SCS setting μ1 on the activated UL BWP b1 of the carrier f1 of the serving cell c1 is smaller than the SCS structure μ2 on the activated UL BWP b2 of the carrier f2 of the serving cell c2, and the UE provides a type 1 power headroom report in the PUSCH transmission in the time slot on the activated UL BWP b1 that overlaps with multiple time slots on the activated UL BWP b2, the UE provides a type 1 power headroom report for the initial PUSCH in the initial time slot of the multiple time slots on the activated UL BWP b2 that completely overlaps with the time slot on the activated UL BWP b1 (when any).

[0376] When the UE is set with the same SCS setting on the activated UL BWP b1 of carrier f1 of serving cell c1 and the activated UL BWP b2 of carrier f2 of serving cell c2 in multiple cells for PUSCH transmission, and the UE provides type-1 power headroom report in the PUSCH transmission in the time slot on the activated UL BWP b1, the UE provides type-1 power headroom report for the initial PUSCH on the time slot on the activated UL BWP b2 that overlaps with the time slot on the activated UL BWP b1 (when exists).

[0377] When the UE is configured for multiple cells for PUSCH transmission and provides Type 1 power headroom report in PUSCH transmission of type B with nominal repetition of PUSCH that repeats one or more time slots on activated UL BWP b2 across multiple time slots on activated UL BWP b1, the UE provides Type 1 power headroom report for the initial PUSCH (where present) in the initial time slot of one or more time slots on activated UL BWP b2 that repeats the multiple time slots of nominal repetition on activated UL BWP b1.

[0378] [Modification 2]

[0379] In the case of multiple serving cells, when reporting the PHR of serving cell c2 when the PHR is transmitted on serving cell c1, the following options may also be applied.

[0380] Option 1

[0381] The rule of Rel. 17 may be reused (variation 1). That is, the UE provides PHR to "the first PUSH or the first PUSCH in the first slot of UL BWP b2 of serving cell c2 that partially / completely overlaps with the slot in BWP b1 of serving cell c1 that transmitted the PHR report".

[0382] 《Option 2-1》

[0383] UE provides PHR in order to "send the first multi-panel simultaneous transmission using PUSH or the first multi-panel simultaneous transmission using PUSCH in the first time slot of UL BWP b2 of service cell c2 that partially / completely overlaps the time slot on BWP b1 of service cell c1 that sent the PHR report."

[0384] Option 2-2

[0385] The UE provides PHR for "the first single-panel PUSCH in the first slot of UL BWP b2 of serving cell c2 that partially / completely overlaps with the slot in BWP b1 of serving cell c1 that transmitted the PHR report, or the first single-panel PUSCH transmission".

[0386] 《Option 2-3》

[0387] UE provides PHR for "the first single-panel PUSCH transmission from the first panel on the first time slot of UL BWP b2 of serving cell c2 that partially / completely overlaps with the time slot on BWP b1 of serving cell c1 for which the PHR report was sent, or the first single-panel PUSCH transmission from the first panel"

[0388] 《Options 2-4》

[0389] The UE provides PHR for "the initial single-panel PUSH transmission from the second panel on the initial time slot of UL BWP b2 of service cell c2 that partially / completely overlaps with the time slot of BWP b1 of service cell c1 that sent the PHR report, or the initial single-panel PUSCH transmission from the second panel".

[0390] 《Options 2-5》

[0391] Multiple options from options 2-1 to 2-4 are supported. For example, option 2-1+option 2-2, that is, the UE reports PHR for each of the initial multi-panel simultaneous PUSCH transmission and the initial single-panel PUSCH transmission.

[0392] 《Options 2-6》

[0393] The UE may also be configured / triggered / instructed by the network (base station) to perform any of the above options, and report the PHR based on the configuration / triggering / instruction.

[0394] When the PUSCH determined by UL BWP2 of serving cell 2 according to the rules of Rel.17 or the new rules (options 2-1 to 2-6) is transmitted by multiple panels simultaneously, the UE may also report PHR according to method 1-1 / 2-1 / 3-1. When the PUSCH determined by UL BWP2 of serving cell 2 according to the rules of Rel.17 or the new rules is transmitted by a single panel, the UE may also report PHR according to method 1-2 / 2-2 / 3-2. When the PUSCH determined by ULBWP2 of serving cell 2 according to the rules of Rel.17 or the new rules is a reference PUSCH, the UE may also report PHR according to method 1-3 / 2-3 / 3-3.

[0395] <Fourth Embodiment>

[0396] In each of the above-described embodiments, when the PHRs of two panels are reported, any of the following (1) to (3) may be applied.

[0397] (1) The Rel.17 MAC CE used for reporting multi-TRP PHR can also be reused. That is, "Enhanced single-entry PHR for MAC CE of multiple TRPs" and "Enhanced multi-entry PHR for MAC CE of multiple TRPs" can also be applied.

[0398] (2) A new MAC CE with two or more PHR fields is introduced for each serving cell for simultaneous transmission of multiple panels. One MAC CE may also contain the PHR of one or more cells.

[0399] (3) Two MAC CEs report two PHRs for two panels respectively.

[0400] When two PHR fields are reported by one MAC CE (the above (2)), the two PHR fields are associated with different panels, that is, the first PHR field is associated with the first panel, and the second PHR field is associated with the second panel.

[0401] Alternatively, in the case of a single panel transmission, when an actual PHR and a virtual PHR are reported for each of the two panels, the actual PHR is used for the panel used in the actual PUSCH transmission / the panel associated with the actual PUSCH transmission, and the virtual PHR is used for other panels not used in the PUSCH transmission and is performed based on the reference / virtual PUSCH transmission associated with the other panels.

[0402] When two MAC CEs are reported for two PHRs for two panels ((3) above), the two MAC CEs are distinguished by different LCIDs. That is, 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 can also be distinguished by the panel index or the TRP index included in the MAC CE (it is considered that one panel is associated with one TRP).

[0403] Alternatively, in the case of a single panel transmission, when an actual PHR and a virtual PHR are reported for two panels respectively, the actual PHR is for the panel used in the actual PUSCH transmission / the panel associated with the actual PUSCH transmission, and the virtual PHR is for other panels not used in the PUSCH transmission, and is performed on the other panels based on the associated reference / virtual PUSCH transmission.

[0404] In the above, the first / second panel can also represent the first / second SRI / TCI state, or an SRS resource set with low / high ID, or a panel with low / high ID, or a TRP with low / high ID (one panel is considered to be associated with a TRP).

[0405] A specific example of MAC CE of this method is described. Figure 6 This is an example showing that one MAC CE includes two PHRs corresponding to one cell. Figure 7 This is an example showing that a MAC CE includes a PHR corresponding to a cell. Figure 7 In , the panel index is included separately from the PHR.

[0406] Figure 8 This is an example showing that one MAC CE corresponds to multiple cells, and each cell contains 2 PHRs.

[0407] Fig. 9 This example shows that one MAC CE corresponds to multiple cells, and each cell contains one PHR. Fig. 9 In , the panel index is included separately from the PHR.

[0408] Each MAC CE may also include, for example, an identifier indicating whether each PHR is an actual PHR or a virtual PHR (similar to the V field of the MAC CE of Rel.16 / 17), the maximum power of each panel, the maximum power of each cell (similar to the P field of the MAC CE of Rel.16 / 17), and the maximum power of each panel. CMAX Same), MPE indication of the panel, MPE indication of the cell (same as the P field and MPE field of MAC CE of Rel.16 / 17), etc.

[0409] <Others>

[0410] In addition, methods 1-2 and 2-2 represent the repetition of the reporting of the PHR when scheduling multi-panel transmission based on assumptions 1-1 to 1-3 of simultaneous transmission of multiple panels. For example, when applying assumption 1-1 of simultaneous transmission of multiple panels (limitation of each panel), when scheduling single-panel transmission, the switching between single-panel transmission and multi-panel transmission is considered, so that the PHR of each panel of the simultaneous transmission of multiple panels is reported by the limitation of each panel.

[0411] In the scenario 1-2 (restriction per cell) of simultaneous transmission of multiple panels, when scheduling single panel transmission, the switching between single panel transmission and multi-panel transmission is considered, so as to report the virtual PHR of simultaneous transmission of multiple panels by utilizing the restriction per cell.

[0412] The UE may also be set / indicated through physical layer signaling / high layer signaling for dynamic switching between single panel transmission and simultaneous transmission of multiple panels. In addition, the UE may also send (report) UE capabilities indicating whether dynamic switching between single panel transmission and simultaneous transmission of multiple panels is supported. The UE may also apply different implementation methods / methods / options depending on whether dynamic switching between single panel transmission and simultaneous transmission of multiple panels is supported.

[0413] <Supplement>

[0414] At least one of the above-mentioned implementation modes may also be applied only to a UE that reports a specific UE capability (UE capability) or supports the specific UE capability.

[0415] The specific UE capability may also represent at least one of the following:

[0416] Supporting specific processing / operation / control / information for at least one of the above embodiments.

[0417] UE supports simultaneous sending and receiving of multiple panels.

[0418] · The UE supports power limitation per panel or per cell for simultaneous multi-panel transmission.

[0419] UE supports power limitation for each panel or each cell for single panel transmission (when supporting simultaneous multi-panel transmission).

[0420] The UE supports reporting 2 PHRs for 2 panels for one serving cell.

[0421] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across the entire frequency (commonly regardless of the frequency), or capabilities per frequency (for example, cell, band, BWP), or capabilities per frequency range (for example, Frequency Range 1 (FR1)), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or capabilities per subcarrier spacing (SubCarrier Spacing (SCS)).

[0422] In addition, the above-mentioned specific UE capabilities can be capabilities applied across full-duplex modes (commonly regardless of the duplex mode) or capabilities according to duplex modes (for example, time division duplex (TDD) and frequency division duplex (FDD)).

[0423] Furthermore, at least one of the above-mentioned embodiments may be applied when specific information associated with the above-mentioned embodiments is set to the UE through higher layer signaling.

[0424] The UE may also apply operations such as Rel.15 / 16 without supporting at least one of the above-mentioned specific UE capabilities or without being set with the above-mentioned specific information.

[0425] (Supplement A)

[0426] The following inventions are added to one embodiment of the present disclosure.

[0427] [Note 1]

[0428] A terminal having:

[0429] a receiving unit that receives settings of restrictions related to transmission power of each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and

[0430] The control unit controls, based on the setting, transmission of at least one of: a first power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission, and a second PHR not dependent on actual PUSCH transmission.

[0431] [Note 2]

[0432] A terminal as described in Appendix 1, wherein:

[0433] The control unit controls transmission of at least one of: a PHR based on a restriction on a transmission power of each panel, and a PHR based on a restriction on a transmission power of each cell.

[0434] [Note 3]

[0435] A terminal as described in Supplement 1 or Supplement 2, wherein:

[0436] The control unit controls the transmission of both the first PHR and the second PHR.

[0437] [Note 4]

[0438] A terminal as described in any one of Notes 1 to 3, wherein:

[0439] The control unit sends the PHR of one of the two panels.

[0440] (Supplementary Note B)

[0441] The following inventions are added to one embodiment of the present disclosure.

[0442] [Note 1]

[0443] A terminal having:

[0444] a receiving unit that receives settings of restrictions related to transmission power of each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and

[0445] The control unit 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 not dependent on the actual PUSCH transmission,

[0446] At least one of the first PHR and the second PHR is sent based on a single panel.

[0447] [Note 2]

[0448] A terminal as described in Appendix 1, wherein:

[0449] The control unit controls transmission of the PHR based on a restriction on transmission power of each cell.

[0450] [Note 3]

[0451] A terminal as described in Supplement 1 or Supplement 2, wherein:

[0452] The control unit controls transmission of both the first PHR and the second PHR.

[0453] [Note 4]

[0454] A terminal as described in any one of Notes 1 to 3, wherein:

[0455] The control unit sends the PHR of one of the two panels.

[0456] (Note C)

[0457] The following inventions are added to one embodiment of the present disclosure.

[0458] [Note 1]

[0459] A terminal having:

[0460] a control unit that applies a power headroom (PHR) for each panel if simultaneous uplink (UL) transmissions from multiple panels are supported; and

[0461] The sending unit sends a medium access control element (MAC CE) including the PHR of each panel.

[0462] [Note 2]

[0463] A terminal as described in Appendix 1, wherein:

[0464] The MAC CE includes 2 PHRs for each cell.

[0465] [Note 3]

[0466] A terminal as described in Supplement 1 or Supplement 2, wherein:

[0467] The MAC CE includes a panel index corresponding to the PHR.

[0468] (Wireless Communication System)

[0469] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0470] Fig.101 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0471] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0472] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0473] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0474] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0475] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0476] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0477] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0478] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0479] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also 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.

[0480] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0481] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0482] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0483] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0484] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0485] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0486] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0487] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0488] In the detection of PDCCH, the control resource set (CORESET) and the search space (search space) can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0489] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be rewritten mutually.

[0490] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0491] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0492] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0493] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0494] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0495] (Base Station)

[0496] Fig.11 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0497] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0498] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0499] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0500] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0501] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0502] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0503] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0504] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0505] The sending and receiving unit 120 (the sending processing unit 1211 may also) performs processing on the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (for example, RLC retransmission control), the Medium Access Control (MAC) layer (for example, HARQ retransmission control), etc., for data and control information obtained from the control unit 110, and generates a bit string to be sent.

[0506] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0507] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0508] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0509] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing (filtering processing), demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0510] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0511] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0512] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0513] In addition, when simultaneous uplink (UL) transmission from multiple panels is supported, the transmission and reception unit 120 may transmit settings related to restrictions on the transmission power of each panel or each cell.

[0514] When simultaneous uplink (UL) transmission from multiple panels is supported, the transmitting and receiving unit 120 may be applied with the power headroom (PHR) of each panel and receive a medium access control element (MAC CE) including the PHR of each code.

[0515] The control unit 110 may also control the reception of at least one of the following sent based on the setting: a first power headroom (PHR) sent based on an actual physical uplink shared channel (PUSCH), and a second PHR that is not dependent on the actual PUSCH transmission. At least one of the first PHR and the second PHR may also be sent based on a single panel.

[0516] (User Terminal)

[0517] Fig.12 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided in one or more portions.

[0518] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0519] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0520] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0521] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0522] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0523] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0524] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0525] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0526] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0527] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0528] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0529] The transmitting and receiving unit 220 (RF unit 222 ) may perform modulation, filter processing (filtering processing), amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0530] On the other hand, the transmitting and receiving unit 220 (RF unit 222) may perform amplification, filter processing (filter processing), demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230.

[0531] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing (filtering processing), demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0532] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0533] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0534] In addition, when simultaneous uplink (UL) transmission from multiple panels is supported, the transmission and reception unit 220 may receive settings related to restrictions on the transmission power of each panel or each cell.

[0535] The control unit 210 may also control the transmission of at least one of the following based on the setting: a first power headroom (PHR) based on an actual physical uplink shared channel (PUSCH) transmission, and a second PHR that is not dependent on the actual PUSCH transmission. At least one of the first PHR and the second PHR may also be transmitted based on a single panel.

[0536] The control unit 210 may also control transmission of at least one of: a PHR based on a restriction related to the transmission power of each panel, and a PHR based on a restriction related to the transmission power of each cell.

[0537] The control unit 210 may also control the sending of both the first PHR and the second PHR.

[0538] The control unit 210 may also control the transmission of the PHR of one of the two panels.

[0539] The control unit 210 may also apply a power headroom (PHR) per panel if simultaneous uplink (UL) transmissions from multiple panels are supported.

[0540] The transmitting and receiving unit 220 may also transmit a Medium Access Control Control Element (MAC CE) including the PHR of each panel. The MAC CE may also include two PHRs for each cell. The MAC CE may also include a panel index corresponding to the PHR.

[0541] (Hardware Structure)

[0542] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0543] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method thereof is not particularly limited.

[0544] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.13 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0545] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be interchangeably used. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0546] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0547] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0548] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0549] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0550] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0551] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0552] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0553] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0554] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0555] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0556] (Variation Example)

[0557] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be rewritten with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0558] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0559] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0560] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0561] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0562] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be replaced with each other.

[0563] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0564] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0565] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when 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.

[0566] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0567] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0568] In addition, a long TTI (e.g., normal TTI, subframe, etc.) can also be rewritten as a TTI with a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) can also be rewritten as a TTI with a TTI length shorter than that of the long TTI and longer than 1 ms.

[0569] 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 (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0570] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0571] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0572] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0573] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0574] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0575] At least one of the set BWPs may be activated, and the UE may not assume that a specific signal / channel is transmitted or received outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0576] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0577] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0578] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0579] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0580] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0581] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0582] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0583] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0584] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0585] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0586] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0587] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0588] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0589] 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", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0590] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0591] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0592] In the present disclosure, the base station sending information to the terminal may also be rewritten as the base station instructing the terminal to control / operate based on the information.

[0593] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0594] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0595] At least one of the base station and the mobile station may also be referred to as a transmission device, a reception device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, a moving object body, etc.

[0596] The mobile body refers to a movable object, and the moving speed is arbitrary, and of course it also includes the situation where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, automatic two-wheeled vehicles (motorcycles), bicycles, connected cars, loading shovels, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trolleys, rickshaws, ships (ships and other watercrafts), airplanes, rockets, artificial satellites, drones, multi-rotor aircraft, quadcopters, balloons and objects carried on them, but are not limited to these. In addition, the mobile body can also be a mobile body that drives autonomously based on operating instructions.

[0597] The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0598] Fig.14 1 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0599] The driving unit 41 is composed of at least one of an engine, a motor, or a combination of an engine and a motor. The steering unit 42 is composed of at least a steering wheel (also called a handlebar), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0600] The electronic control unit 49 is composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an ECU (Electronic Control Unit).

[0601] Signals from various sensors 50-58 include a current signal from a current sensor 50 for sensing the current of a motor, a speed signal of the front wheels 46 / rear wheels 47 obtained by a speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by other sensors 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of an accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of a brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of a shift lever 45 obtained by a shift lever sensor 57, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0602] The information service unit 59 is composed of various devices such as a vehicle navigation system, an audio system, a speaker, a display, a television, and a radio for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 provides various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40 using information obtained from an external device via the communication module 60, etc.

[0603] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0604] The driving assistance system unit 64 is composed of various devices such as millimeter wave radar, light detection and ranging (LiDAR), camera, positioning locator (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., high-precision (High Definition (HD))) map, autonomous vehicle (Autonomous Vehicle (AV)) map, etc.), gyroscope system (e.g., inertial measurement unit (Inertial Measurement Unit (IMU))), inertial navigation unit (Inertial Navigation System (INS))), artificial intelligence (Artificial Intelligence (AI)) chip, AI processor, etc., for providing functions for preventing accidents before they happen or reducing the driver's driving load, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 64 sends and receives various information via the communication module 60 and realizes driving assistance function or autonomous driving function.

[0605] The communication module 60 can communicate with the microprocessor 61 and the components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 of the vehicle 40 via the communication port 63.

[0606] The communication module 60 can be controlled by the microprocessor 61 of the electronic control unit 49, and is a communication device that can communicate with an external device. For example, various information is sent and received with the external device via wireless communication. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it can also function as at least one of the base station 10 and user terminal 20).

[0607] The communication module 60 may also transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted through the communication module 60 may also include information based on the above input.

[0608] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device, and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 may also be referred to as an output unit for outputting information (for example, outputting information to a display, a speaker, etc. based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0609] In addition, the communication module 60 stores various information received from the external device in the memory 62 that can be used by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, and various sensors 50-58 of the vehicle 40 based on the information stored in the memory 62.

[0610] In addition, the base station in the present disclosure may also be rewritten as a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink", "downlink", etc. may also be rewritten as terms corresponding to communication between terminals (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may also be rewritten as sidelink channels.

[0611] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0612] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering the Mobility Management Entity (MME)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0613] The various methods / implementations described in this disclosure may be used alone or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, timings, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the method described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0614] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on these enhancements, corrections, production or regulations, etc. In addition, multiple systems can also be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0615] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0616] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0617] The term "determining" used in the present disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0618] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0619] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0620] In addition, "judge (decide)" can also be rewritten as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0621] The “maximum transmit power” recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated maximum transmit power).

[0622] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be rewritten as "access".

[0623] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as being "connected" or "combined" to each other using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0624] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same manner as "different".

[0625] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0626] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0627] In the present disclosure, "below", "less than", "above", "more than", "equal to", etc. can also be rephrased with each other. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rephrased with each other, without being limited to the original degree, comparative degree, and superlative degree. In addition, in the present disclosure, sentences meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. can also be rephrased with each other as expressions with "ith" attached, without being limited to the original degree, comparative degree, and superlative degree (for example, "highest" can also be rephrased with "i-th highest").

[0628] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may also be replaced by each other.

[0629] The invention involved in the present disclosure is described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered method without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

[0630] This application is based on Japanese Patent Application No. 2022-81198 filed on May 17, 2022, the entire contents of which are expressly incorporated herein by reference.

Claims

1. A terminal having: a receiving unit that receives settings of restrictions related to transmission power of each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and The control unit controls, based on the setting, transmission of at least one of: a first power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission, and a second PHR not dependent on actual PUSCH transmission.

2. The terminal according to claim 1, wherein: The control unit controls transmission of at least one of: a PHR based on a restriction on a transmission power of each panel, and a PHR based on a restriction on a transmission power of each cell.

3. The terminal according to claim 1, wherein: The control unit controls the transmission of both the first PHR and the second PHR.

4. The terminal according to claim 1, wherein: The control unit controls the transmission of the PHR of one of the two panels.

5. A wireless communication method of a terminal, comprising: The step of receiving settings of limitations related to transmit power per panel or per cell in the event that simultaneous uplink (UL) transmission from multiple panels is supported; and Based on the setting, a step of controlling transmission of at least one of: a first power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission, and a second PHR not dependent on actual PUSCH transmission.

6. A base station, comprising: a transmitting unit that transmits settings related to restrictions on transmission power for each panel or each cell when simultaneous uplink (UL) transmission from multiple panels is supported; and The control unit controls reception of at least one of the following transmitted based on the setting: a first power headroom (PHR) based on actual physical uplink shared channel (PUSCH) transmission, and a second PHR not dependent on actual PUSCH transmission.

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