Terminal, wireless communication method, base station and system

Abstract

The present invention appropriately reports a PHR including a plurality of PHs. A terminal according to one aspect of the present disclosure comprises: a control unit for generating a medium access control (MAC) control element that includes two power headroom (PH) fields for one serving cell, and includes a PCMAX,f,c field relating to at least one of the two PH fields; and a transmission unit for transmitting the MAC control element.

Description

Terminal, wireless communication method and base station

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

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

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

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

[0005] In future wireless communication systems (e.g., NR), a terminal (user terminal, User Equipment (UE)) will transmit a Power Headroom Report (PHR) containing information on the power headroom (PH) for each serving cell to the network. The network can use the PHR to control the uplink transmission power of the UE.

[0006] In NR, it is considered that one or more transmission / reception points (TRPs) (multi-TRPs (MTRPs)) perform DL transmission to a UE. It is also considered that a UE performs UL transmission to one or more TRPs.

[0007] In future wireless systems (e.g., NR Rel. 17 and later), repeated transmission of the Physical Uplink Shared Channel (PUSCH) of the MTRP is being considered. Also, when the MTRP PUSCH is supported / configured / enabled and reporting of two PHs for two TRPs is configured / enabled, the inclusion of two PHRs in the PHR Medium Access Control Element (PHR MAC CE) is being considered.

[0008] However, the current standard does not specify how to configure some fields when two PHs are included in the PHR MAC CE. If the PHR is not reported appropriately, communication throughput, communication quality, etc. may be degraded.

[0009] 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 report a PHR that includes multiple PHs.

[0010] A terminal according to one aspect of the present disclosure includes two Power Headroom (PH) fields for one serving cell, and a P Headroom (PH) field for at least one of the two PH fields. ＣＭＡＸ，ｆ，ｃ The apparatus includes a control unit that generates a Medium Access Control (MAC) control element including a field, and a transmission unit that transmits the MAC control element.

[0011] According to one aspect of the present disclosure, a PHR including multiple PHs can be appropriately reported.

[0012]

[0033] Figure 1 is a diagram showing an example of a single-entry PHR MAC CE in Rel. 16 NR. Figure 2 is a diagram showing an example of a multiple-entry PHR MAC CE in Rel. 16 NR. Figure 3A is a diagram showing an example of a case assumed in embodiment 2.1.4. Figure 3B is a diagram showing an example of a case assumed in embodiments 2.1.5 and 2.1.6. Figure 4A is a diagram showing an example of a case assumed in embodiment 2.2.4. Figure 4B is a diagram showing an example of a case assumed in embodiments 2.2.5 and 2.2.6. Figure 5 is a diagram showing an example of a single-entry PHR MAC CE in the first to third embodiments. Figure 6 is a diagram showing an example of a multiple-entry PHR MAC CE in the first to third embodiments. Figure 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. Figure 8 is a diagram showing an example of a configuration of a base station according to an embodiment. Figure 9 is a diagram showing an example of a configuration of a user terminal according to an embodiment. Figure 10 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. FIG. 11 is a diagram illustrating an example of a vehicle according to an embodiment.

[0013] (PHR) In future wireless communication systems (e.g., NR), a UE will transmit a Power Headroom Report (PHR) to the network, including information on the power headroom (PH) for each serving cell. The network can use the PHR to control the uplink transmission power of the UE.

[0014] The PHR may be transmitted by Medium Access Control (MAC) signaling using a Physical Uplink Shared Channel (PUSCH). For example, the PHR is notified using a PHR MAC Control Element (CE) included in a MAC Protocol Data Unit (PDU).

[0015] In NR, a single entry PHR MAC CE for the primary cell (PCell) is supported.

[0016] Figure 1 shows an example of a single-entry PHR MAC CE in Rel. 16 NR. This MAC CE consists of two octets (= 16 bits). Each 'R' in Figure 1 indicates a 1-bit reserved field, which is set to, for example, '0'.

[0017] 1, 'PH (Type 1, PCell)' indicates a 6-bit field and indicates an index for a Type 1 PH of the primary cell (PCell). The index for the PH is associated with a specific PH value (in decibels (dB)) (or level).

[0018] For example, Type 1 PH may be a PH when taking into consideration the PUSCH (e.g., taking into consideration only the power of the PUSCH), Type 2 PH may be a PH when taking into consideration the PUCCH (e.g., taking into consideration the power of both the PUSCH and the PUCCH), and Type 3 PH may be a PH when taking into consideration a measurement reference signal (Sounding Reference Signal (SRS)) (e.g., taking into consideration the power of the PUSCH and the SRS).

[0019] 'P' in Figure 1 ＣＭＡＸ，ｆ，ｃ ' indicates a 6-bit field, and is the P used in calculating the PH field above. ＣＭＡＸ，ｆ，ｃ The index for the P ＣＭＡＸ，ｆ，ｃ The index for P is associated with a specific UE transmit power level (dB). ＣＭＡＸ，ｆ，ｃ may be referred to as the configured maximum transmit power (maximum allowed transmit power) of the UE for serving cell c of carrier f. ＣＭＡＸ，ｆ，ｃ is simply P ＣＭＡＸ It is also written as PCMAX.

[0020] 'P' in FIG. 1 may be a field related to Power Management Maximum Power Reduction (P-MPR) or Maximum Permitted UE Output Power Reduction for the serving cell c, or may be a field related to Maximum Permitted Exposure (MPE). 'MPE' in FIG. 1 may be a field related to MPE. Fields such as 'P' and 'MPE' may be replaced with 'R' fields depending on the configuration using higher layer signaling to the UE.

[0021] The 'P' field is set to FR2 MPE reporting (upper layer parameter mpe-Reporting-FR2), and if the serving cell operates in FR2, it is set to 0 if the P-MPR value applied to meet the MPE requirement is less than a specific P-MPR value (e.g., P-MPR_00), otherwise it is set to 1.

[0022] Also, the 'P' field may indicate whether power backoff is applied for power management when FR2 MPE reporting is not configured or when the serving cell operates in FR1. If power backoff is not applied for power management, the corresponding P ＣＭＡＸ If the fields were to have different values, the 'P' field is set to one.

[0023] The 'MPE' field may indicate the power backoff to be applied to satisfy the MPE requirement if MPE reporting for FR2 (higher layer parameter mpe-Reporting-FR2) is set, the serving cell operates in FR2, and the 'P' field is set to 1. This field may indicate an index corresponding to the measured P-MPR value (e.g., in dB).

[0024] If FR2 MPE reporting is not configured, or the serving cell is operating in FR1, or the 'P' field is set to 0, the R field (R bit) may be present instead of the 'MPE' field.

[0025] In NR, a multiple entry PHR MAC CE that includes multiple pieces of data similar to the above-mentioned single entry (2 octets) is also supported. The multiple entry PHR MAC CE may include a PH field for a primary secondary cell (PSCell) and a secondary cell (SCell). Note that the PCell and PSCell may be referred to as special cells (SpCells).

[0026] Figure 2 shows an example of a multiple-entry PHR MAC CE in Rel. 16 NR. The same fields as in Figure 1 will not be described again. The 6-bit fields containing the word 'PH' in Figure 2 indicate the corresponding type (e.g., types 1-3 described above) and PH field for the cell.

[0027] Note that the presence of the Type 2 PH field for the SpCell of another MAC entity may be set by the higher layer parameter phr-Type2OtherCell being true.

[0028] 'P' in FIG. ＣＭＡＸ，ｆ，ｃ The 6-bit field containing the word ' is the P value used in the calculation of the previous PH field. ＣＭＡＸ，ｆ，ｃ P indicates ＣＭＡＸ，ｆ，ｃ It is a field. ｉ ' is a field indicating whether the PH field of the serving cell corresponding to the serving cell index i is included in the PHR. Note that FIG. 2 shows the case where the maximum serving cell index is less than 8. If it is 8 or more, the MAC CE can indicate serving cells up to i=31, for example. ｉ ' field may be included.

[0029] The number and P assigned to the "serving cell" in the PH field ＣＭＡＸ，ｆ，ｃThe number in the field may not necessarily mean the serving cell index, but may simply mean the ordinal number of the value included in the MAC CE.

[0030] 'V' in FIG. 2 is a field that indicates whether the PH value corresponding to the immediately following PH field is based on real transmission (V=0) or on a reference format (V=1). A PH based on a reference format may be called a virtual PH. Note that when V=1, the corresponding 'P ＣＭＡＸ，ｃ The ', 'MPE' fields, etc. may be omitted.

[0031] The network may transmit PHR configuration information to the UE regarding the conditions for triggering PHR, such as a prohibit timer, a periodic timer, and a path loss change threshold. This notification may be performed via higher layer signaling. The UE triggers PHR when the PHR trigger conditions are met.

[0032] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0033] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0034] (Multi-TRP) In NR, one or more transmission / reception points (Transmission / Reception Points (TRP)) (Multi-TRP (M-TRP)) are considered to perform DL transmission to a UE using one or more panels (multi-panels). It is also considered that a UE performs UL transmission to one or more TRPs.

[0035] In future wireless systems (e.g., NR Rel. 17 and later), it is being considered to indicate multiple (e.g., two) SRS Resource Indicators (SRIs) / Transmitted Precoding Matrix Indicators (TPMIs) using a single DCI for performing PUSCH repetition transmission of multiple TRPs (MTRP PUSCH repetition).

[0036] For example, in the case of codebook-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI, a Transmitted Rank Indicator (TRI), and the TPMI. In the case of non-codebook-based transmission, the UE may determine a precoder for PUSCH transmission based on the SRI. Note that the SRI may be specified to the UE by the DCI or may be provided by higher layer parameters.

[0037] When a single DCI indicates multiple SRI / TPMIs, the following Option 1 or Option 2 can be considered: - Option 1: A field indicating multiple (e.g., two) SRI / TPMIs is used to indicate SRI / TPMI (values) for multiple (e.g., two) TRPs; - Option 2: A field indicating one SRI / TPMI is indicated, and a code point corresponding to the multiple (e.g., two) SRI / TPMI values ​​is set in the field indicating the SRI / TPMI.

[0038] In Option 1, each code point in multiple SRI / TPMI fields may correspond to one TPMI value. The correspondence (association) between the SRI / TPMI fields and the SRI / TPMI values ​​may be defined in advance in the specifications. Furthermore, the correspondence (association) between the SRI / TPMI fields and the SRI / TPMI values ​​may be the correspondence defined up to Rel. 16 or the correspondence defined in Rel. 17 or later. The correspondence between the SRI / TPMI fields and the SRI / TPMI values ​​may differ for each of the multiple SRI / TPMI fields.

[0039] In Option 2, a code point indicating one SRI / TPMI field may correspond to multiple (e.g., two) SRI / TPMI values. The correspondence (association) between the SRI / TPMI field and the SRI / TPMI value may be defined in advance in a specification, or may be notified / configured / activated by RRC signaling / MAC CE.

[0040] It is being considered that a DCI can dynamically indicate / switch between single PUSCH transmission / repeated PUSCH transmission using a single TRP (Single TRP (STRP)) and repeated PUSCH transmission using multiple TRPs (Multi TRP (MTRP)). This dynamic switching may utilize a specific field included in DCI defined up to Rel. 16, or a specific field defined in Rel. 17 or later (e.g., a field for specifying STRP or MTRP operation).

[0041] Furthermore, the term "dynamic switch" in the present disclosure may refer to a "switch that uses at least one of higher layer signaling and physical layer signaling." Furthermore, the term "switch" in the present disclosure may be interchangeably read as switching, change, changing, applying, instructing, setting, and the like.

[0042] Incidentally, when M-TRP PUSCH is supported / configured / enabled and reporting of two PHRs for two TRPs is configured / enabled, it is considered to include two PHRs (first PHR and second PHR) in the PHR MAC CE. Reporting of two PHRs for two TRPs may be configured for the UE by higher layer parameters (RRC parameters).

[0043] Here, the first PHR may be reported as in Rel. 15 / 16. The second PHR may be a PHR of a different TRP than the first PHR. The second PHR may be reported as an actual PHR or a virtual PHR.

[0044] The actual PHR is a PHR based on an actual PUSCH transmission and may be referred to as a real PHR. The actual PHR may be calculated based on power control parameters for the actual PUSCH transmission.

[0045] The virtual PHR is a PHR that does not depend on the actual PUSCH transmission (based on the reference PUSCH transmission) and may be referred to as a reference PHR, a PHR according to a reference format, etc. The virtual PHR may be calculated based on the default power control parameters already specified in Rel. 15 / 16 NR, or may be calculated based on new default power control parameters.

[0046] In the present disclosure, the power control parameter is P ＣＭＡＸ，ｆ，ｃ , Maximum Power Reduction (MPR), P-MPR, Additional Maximum Power Reduction (Additional MPR (A-MPR)), ΔTc, P ０ , alpha, a pathloss reference signal (PL-RS), and a closed-loop index (l). For example, in Rel. 16 NR, the default power control parameters are MPR=0 [dB], A-MPR=0 [dB], P-MPR=0 [dB], ΔT Ｃ = 0 [dB], and P ０ and alpha is P ０＿ＮＯＭＩＡＮＡＬ＿ＰＵＳＣＨ、ｆ、ｃ (0) and upper layer parameter p0-PUSCH-AlphaSetId=0, and the downlink path loss estimation is obtained using upper layer parameter pusch-PathlossReferenceRS-Id=0, with l=0.

[0047] However, in the current standard, when two PHRs are included in the PHR MAC CE, ＣＭＡＸ It does not specify how to configure the P field, MPE field, etc. If an appropriate PHR is not reported, communication throughput and communication quality may be degraded.

[0048] Therefore, the present inventors have conceived a method for appropriately reporting a PHR that includes multiple PHs.

[0049] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0050] In the present disclosure, "A / B" and "at least one of A and B" may be read interchangeably.

[0051] In the present disclosure, the terms activate, deactivate, indicate, select, configure, update, determine, etc. may be read interchangeably.

[0052] In the present disclosure, RRC, RRC parameters, RRC messages, RRC signaling, higher layer parameters, information elements (IEs), and configurations may be interchangeable. In the present disclosure, MAC CE, update commands, and activation / deactivation commands may be interchangeable. In the present disclosure, supporting, controlling, controllable, operating, and operable may be interchangeable.

[0053] In the present disclosure, the terms panel, beam, panel group, beam group, precoder, Uplink (UL) transmitting entity, TRP, spatial relationship information (SRI), spatial relationship, SRS Resource Indicator (SRI), SRS resource, control resource set (CONTROLLER RESOLUTION SET (CORESET)), Physical Downlink Shared Channel (PDSCH), codeword, base station, predetermined antenna port (e.g., Demodulation Reference Signal (DMRS) port), predetermined antenna port group (e.g., DMRS port group), predetermined group (e.g., Code Division Multiplexing (CDM) group, predetermined reference signal group, CORESET group), predetermined resource (e.g., predetermined reference signal resource), predetermined resource set (e.g., predetermined reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink TCI state (DLTC), The terms unified TCI state, common TCI state, QCL, QCL assumption, etc. may be read interchangeably.

[0054] Furthermore, the TCI state identifier (ID) and the TCI state may be interchangeable. The TCI state and the TCI may be interchangeable.

[0055] In this disclosure, the terms index, ID, indicator, and resource ID may be interchangeable. In this disclosure, the terms sequence, list, set, group, cluster, and subset may be interchangeable.

[0056] In the present disclosure, the terms TRP index, CORESET pool index (CORESETPoolIndex), pool index, group index, etc. may be read interchangeably.

[0057] In the present disclosure, a single PDCCH (DCI) may be referred to as a PDCCH (DCI) of a first scheduling type (e.g., scheduling type A (or type 1)), and a multi-PDCCH (DCI) may be referred to as a PDCCH (DCI) of a second scheduling type (e.g., scheduling type B (or type 2)).

[0058] In the present disclosure, for a single DCI, the i-th TRP (TRP#i) may refer to the i-th TCI state, the i-th CDM group, etc. (i is an integer). For a multi-DCI, the i-th TRP (TRP#i) may refer to the CORESET corresponding to CORESET pool index=i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0059] In the present disclosure, multi-TRP (MTRP, M-TRP), multi-TRP system, multi-TRP transmission, and multi-PDSCH may be read interchangeably.

[0060] In the present disclosure, single DCI (sDCI), single PDCCH, multi-TRP system based on single DCI, sDCI-based MTRP, scheduling multiple PUSHs (corresponding to different SRIs) using one DCI, sDCI-based MTRP transmission, and activating two TCI states on at least one TCI codepoint may be read interchangeably.

[0061] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, mDCI-based MTRP, mDCI-based MTRP transmission, use of multi-DCI for MTRP, scheduling multiple PUSHs (corresponding to different SRIs) using two DCIs, and setting two CORESET pool indices or CORESET pool index = 1 (or a value greater than or equal to 1) may be read interchangeably.

[0062] The repetition in the present disclosure may be interchangeably referred to as MTRP-based repetition, Rel. 17 repetition, repetition applying a different spatial relationship, repetitive PUSCH, repetitive PUCCH, repetitive transmission, etc. Furthermore, the repetitive transmission in the following embodiments may correspond to at least one of repetitive transmission type A, repetitive transmission type B, and other repetitive transmission types.

[0063] In addition, in the repeated PUSCH, the same codeword / transport block may be transmitted in each PUSCH (each repetition). The repeated PUSCH may be interchangeably read as multiple PUSCHs having the same content (e.g., data / codeword / transport block).

[0064] In the present disclosure, the first TRP and the second TRP may be interchangeably read as the first PUSH and the second PUSH, the first PUSH transmission opportunity and the second PUSH transmission opportunity, the first SRI and the second SRI, etc.

[0065] In the present disclosure, MTRP PUSCH repetition may be interchangeably read as two PUCCH repetitions for two TRPs, two PUSCH repetitions using two SRIs, two PUSCH repetitions using two sets of power control parameters (power control parameters are described below), etc.

[0066] In this disclosure, STRP PUSCH repetition may refer to multiple PUSCH transmissions transmitted using one (same) SRI / power control parameter set / beam / precoder, and single transmission may refer to a PUSCH transmission transmitted using one SRI / power control parameter set / beam / precoder.

[0067] In addition, PUSCH repetition / PUSCH transmission for TRP1 may mean PUSCH repetition / PUSCH transmission using the first SRI (or SRI field) / first power control parameter set.

[0068] Furthermore, PUSCH repetition / PUSCH transmission for TRP2 may mean PUSCH repetition / PUSCH transmission using a second SRI (or SRI field) / second power control parameter set.

[0069] In the following embodiments, repeated transmission of a PUSCH using multiple TRPs may be interchangeably referred to as M-TRP PUSCH, MTRP PUSCH repetition, PUSCH transmission using multiple TRPs, repeated transmission of a PUSCH for multiple TRPs, PUSCH across multiple TRPs, repeated PUSCH across multiple TRPs, simply repeated PUSCH, repeated transmission, multiple PUSCH transmission, PUSCH transmission using multiple SRIs, M-TRP PUSCH, etc.

[0070] In addition, a PUSCH transmission using a single TRP may also be referred to as an S-TRP PUSCH, an STRP PUSCH repetition, a PUSCH transmission using a single TRP, a repeated PUSCH transmission for a single TRP, a PUSCH across a single TRP, a repeated PUSCH across a single TRP, a single PUSCH transmission for a single TRP, simply a single PUSCH transmission, a PUSCH transmission in a single TRP, a PUSCH transmission using a single SRI, etc.

[0071] In each embodiment of the present disclosure, UL transmission is described using, as an example, PUSCH transmission for single / multiple TRPs using one DCI and codebook-based PUSCH transmission. However, non-codebook-based PUSCH transmission may also be applied, and PUSCH transmission to which each embodiment can be applied is not limited to these. When each embodiment of the present disclosure is applied to non-codebook-based PUSCH transmission, one or more SRS resources (SRIs) may be indicated to the UE by each SRI field. Furthermore, common or different embodiments may be applied to codebook-based PUSCH transmission and non-codebook-based PUSCH transmission. Furthermore, UL transmission is not limited to PUSCH, and each embodiment of the present disclosure can also be applied to PUCCH as appropriate (PUSCH may be read as PUCCH).

[0072] In addition, in each embodiment of the present disclosure, the case where the number of multiple TRPs, multiple SRIs, etc. is two is mainly described as an example, but these numbers may be three or more. In other words, "two" in the present disclosure may be read as "multiple."

[0073] In the present disclosure, "CORESET pool index is set to 0" may be read interchangeably as "CORESET pool index is set to 0 or CORESET pool index is not set."

[0074] Also, in the present disclosure, the CORESET pool index, the PUSCH repetition index, and the higher layer index may be read as interchangeable.

[0075] In the present disclosure, the terms "PHR," "PH," "PH field," "PH value," etc. may be interchangeable. Also, in the present disclosure, the PH field may be interchangeable with a PH field of a certain type (e.g., type 1 / 2 / 3 / X).

[0076] Note that, although each of the embodiments described below is based on the premise that MTRP PUSCH repetition is enabled for the UE by a higher layer parameter, this is not limiting. "MTRP PUSCH repetition is enabled" may mean "two codebook-based / non-codebook-based SRS resource sets are configured."

[0077] In each embodiment, the PHR MAC CE includes a field (P ＣＭＡＸ field, P field, etc.).

[0078] In the following embodiments, "PH field (corresponding to / for / )" ＣＭＡＸ "P-MPR value / power backoff" corresponds to "P-MPR value / power backoff of (corresponding to / for) the PUSCH transmission corresponding to the PH field. ＣＭＡＸ These terms may be interchangeably read as "field / P-MPR value / power backoff".

[0079] In the present disclosure, the terms P-MPR, P-MPR value, and power backoff may be read interchangeably.

[0080] (Wireless Communication Method) First Embodiment The first embodiment is a method for transmitting PHR MAC CE. ＣＭＡＸ Regarding the field.

[0081] In the first embodiment, P corresponding to two PH fields of one serving cell ＣＭＡＸ Two fields may be included. ＣＭＡＸ The first P of the field ＣＭＡＸ The field is the P field used to calculate the first PH field of the serving cell. ＣＭＡＸ and the second P ＣＭＡＸ The field is a P field used to calculate the second PH field of the serving cell. ＣＭＡＸ may indicate the value of

[0082] In the first embodiment, P corresponding to two PH fields of one serving cell ＣＭＡＸ Only one field may be included. ＣＭＡＸ The field may indicate at least one of the following: The P used in calculating the first PH field of the serving cell. ＣＭＡＸ the value of P used to calculate the second PH field of the serving cell; ＣＭＡＸ the value of P used to calculate the first and second PH fields of the serving cell; ＣＭＡＸ (In this case, a common P ＣＭＡＸ The value of P used to calculate the PH field corresponding to the actual PH of the serving cell may be used. ＣＭＡＸ (when the number of PH fields corresponding to the actual PH of the serving cell is 1).

[0083] According to the first embodiment described above, even when two PH fields of one serving cell are included in a PHR report, the UE can report the PHR corresponding to the PH field. ＣＭＡＸThe fields may be appropriately included in the PHR report.

[0084] Second Embodiment The second embodiment relates to the P field in the PHR MAC CE.

[0085] The second embodiment is broadly divided into the following two cases: - Embodiment 2.1: When MPE reporting for FR2 (higher layer parameter mpe-Reporting-FR2) is configured and the serving cell operates in FR2; - Embodiment 2.2: When MPE reporting for FR2 is not configured or the serving cell operates in FR1.

[0086] [Embodiment 2.1] In embodiment 2.1, the applied P-MPR value for (corresponding to) the first PH field of the serving cell is also simply referred to as the first P-MPR value, and the applied P-MPR value for (corresponding to) the second PH field of the serving cell is also simply referred to as the second P-MPR value.

[0087] In embodiment 2.1, two P fields corresponding to the two PH fields of one serving cell may be included, where the first P field indicates whether the first P-MPR value is smaller than a specific P-MPR value (e.g., P-MPR_00), and the second P field indicates whether the second P-MPR value is smaller than a specific P-MPR value (e.g., P-MPR_00).

[0088] In addition, in embodiment 2.1, the specific P-MPR value for each P-field may be the same or different. The UE may determine information regarding the specific P-MPR value for a P-field based on a specific rule / UE capability, or may be notified using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel, or a combination thereof. In the present disclosure, the "specific P-MPR value" may be interchangeably read as a "set / specified threshold."

[0089] In embodiment 2.1, only one P field corresponding to two PH fields of one serving cell may be included. The P-field may be according to at least one of the following: - embodiment 2.1.1: if the first P-MPR value is smaller than a specific P-MPR value, it is set to 0, otherwise it is set to 1; - embodiment 2.1.2: if the second P-MPR value is smaller than a specific P-MPR value, it is set to 0, otherwise it is set to 1; - embodiment 2.1.3: if the applied P-MPR value for the PH field corresponding to the actual PH of the serving cell (the number of PH fields corresponding to the actual PH of the serving cell is 1) is smaller than a specific P-MPR value, it is set to 0, otherwise it is set to 1; - embodiment 2.1.4: if both the first P-MPR value and the second P-MPR value are smaller than a specific P-MPR value, it is set to 0, otherwise it is set to 1; - embodiment 2.1.5: if both the first P-MPR value and the second P-MPR value are smaller than a specific P-MPR value, it is set to 0, otherwise it is set to 1; - Embodiment 2.1.6: If one (or at least one) of the first P-MPR value and the second P-MPR value is less than a specific P-MPR value, it is set to 0, otherwise it is set to 1.

[0090] In addition, in the above embodiment 2.1.4, only the case where both the first P-MPR value and the second P-MPR value are smaller than a specific P-MPR value and the case where both the first P-MPR value and the second P-MPR value are not smaller than a specific P-MPR value may be assumed (it may be assumed that other cases do not occur).

[0091] In addition, in the above embodiments 2.1.5 / 2.1.6, it may be assumed that cases may occur in which one of the first P-MPR value and the second P-MPR value is smaller than a specific P-MPR value, and the other is not smaller than the specific P-MPR value (for example, it may be assumed that these cases may occur in addition to the cases assumed in embodiment 2.1.4).

[0092] 3A is a diagram showing an example of a case assumed in embodiment 2.1.4. In this example, only cases are assumed in which both the first PHR (PH) field and the second PHR (PH) field are smaller than a specific P-MPR value (e.g., P-MPR_00) or both are equal to or greater than the specific P-MPR value.

[0093] 3B is a diagram showing an example of a case assumed in embodiments 2.1.5 and 2.1.6. In this example, not only a case where both the first PHR (PH) field and the second PHR (PH) field are smaller than a specific P-MPR value (e.g., P-MPR_00) or both are equal to or greater than the specific P-MPR value, but also a case where one is smaller than the specific P-MPR value and the other is equal to or greater than the specific P-MPR value is assumed.

[0094] [Embodiment 2.2] In embodiment 2.2, the application of power backoff for (corresponding to) power management for the first PH field of the serving cell is also simply referred to as "first power backoff is applied," and the application of power backoff for (corresponding to) power management for the second PH field of the serving cell is also simply referred to as "second power backoff is applied."

[0095] In embodiment 2.2, two P fields corresponding to two PH fields of one serving cell may be included, where the first P field may indicate whether a first power backoff (e.g., P-MPR>0) is applied, and the second P field may indicate whether a second power backoff (e.g., P-MPR>0) is applied.

[0096] In addition, in embodiment 2.2, the power backoff for each P-field may be the same or different. The UE may determine the information regarding the power backoff for a certain P-field based on a specific rule / UE capability, or may be notified using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal / channel, or a combination thereof. In the present disclosure, "power backoff (e.g., P-MPR>0) is applied" may mean "if power backoff is not applied due to power management, the corresponding P-field is not applied." ＣＭＡＸ The fields were to have different values."

[0097] In embodiment 2.2, only one P field corresponding to two PH fields of one serving cell may be included, and the P field may conform to at least one of the following: - embodiment 2.2.1: set to 1 if a first power backoff is applied, and set to 0 otherwise; - embodiment 2.2.2: set to 1 if a second power backoff is applied, and set to 0 otherwise; - embodiment 2.2.3: set to 1 if a power backoff (e.g., P-MPR>0) is applied for power management for the PH field corresponding to the actual PH of the serving cell (the number of PH fields corresponding to the actual PH of the serving cell is 1), and set to 0 otherwise; - embodiment 2.2.4: set to 1 if both the first power backoff and the second power backoff are applied, and set to 0 otherwise; - embodiment 2.2.5: set to 1 if both the first power backoff and the second power backoff are applied, and set to 0 otherwise. Embodiment 2.2.6: Set to 1 if one (or at least one) of the first power backoff and the second power backoff is applied, otherwise set to 0.

[0098] In addition, in the above embodiment 2.2.4, only the case in which both the first power backoff and the second power backoff are applied and the case in which neither the first power backoff nor the second power backoff are applied may be assumed (it may be assumed that other cases do not occur).

[0099] In addition, in the above embodiments 2.2.5 / 2.2.6, it may be assumed that cases may occur in which one of the first power backoff and the second power backoff is applied and the other is not applied (for example, it may be assumed that these cases may occur in addition to the cases assumed in embodiment 2.2.4).

[0100] 4A is a diagram showing an example of a case assumed in embodiment 2.2.4. In this example, only a case where P-MPR (power backoff) is applied to both the first PHR (PH) field and the second PHR (PH) field, and a case where P-MPR (power backoff) is not applied to both the first PHR (PH) field and the second PHR (PH) field are assumed.

[0101] 4B is a diagram showing an example of a case assumed in embodiments 2.2.5 and 2.2.6. In this example, not only a case where the P-MPR is applied to both the first PHR(PH) field and the second PHR(PH) field, a case where the P-MPR is not applied to both, but also a case where the P-MPR is applied to one field but not the other is assumed.

[0102] In the second embodiment, "set to 0" and "set to 1" may be interpreted interchangeably.

[0103] According to the second embodiment described above, even when the UE includes two PH fields of one serving cell in the PHR report, the UE can appropriately include a P field corresponding to the PH field in the PHR report.

[0104] Third Embodiment The third embodiment relates to the MPE field in the PHR MAC CE.

[0105] In the third embodiment, the power backoff applied to satisfy the MPE requirement for (corresponding to) the first PH field of the serving cell is also simply referred to as the first power backoff, and the power backoff applied to satisfy the MPE requirement for (corresponding to) the second PH field of the serving cell is also simply referred to as the second power backoff. Note that the MPE field may indicate an index corresponding to the measured P-MPR value (e.g., in dB).

[0106] In the third embodiment, when FR2 MPE reporting (e.g., upper layer parameter mpe-Reporting-FR2) is configured, a serving cell operates in FR2, and at least one P field corresponding to the serving cell is set to 1, two MPE fields corresponding to two PH fields of one serving cell may be included. Of these two MPE fields, the first MPE field may indicate a first power backoff, and the second MPE field may indicate a second power backoff.

[0107] In the third embodiment, when the MPE reporting of FR2 (e.g., the upper layer parameter mpe-Reporting-FR2) is configured, the serving cell operates in FR2, and at least one P field corresponding to the serving cell is set to 1, only one MPE field corresponding to two PH fields of one serving cell may be included. ＣＭＡＸ The field may indicate at least one of the following: - a first power backoff; - a second power backoff; - a first power backoff and a second power backoff (in this case, a common power backoff value may be used to calculate the first PH field and the second PH field); - a power backoff applied to meet the MPE requirement for (corresponding to) the PH field corresponding to the actual PH of the serving cell (when the number of PH fields corresponding to the actual PH of the serving cell is 1).

[0108] In the third embodiment, "MPE reporting for FR2 (e.g., upper layer parameter mpe-Reporting-FR2) is configured, and the serving cell operates in FR2" may be read as "MPE reporting for FR2 is not configured, or the serving cell operates in FR1."

[0109] According to the third embodiment described above, even when the UE includes two PH fields of one serving cell in the PHR report, the UE can appropriately include the MPE field corresponding to the PH field in the PHR report.

[0110] <Specific Example of PHR MAC CE in First to Third Embodiments> The PHR MAC CE in the first to third embodiments may be a single-entry PHR MAC CE or a multiple-entry PHR MAC CE.

[0111] 5 is a diagram showing an example of a single-entry PHR MAC CE in the first to third embodiments. Differences from FIG. 1 will be described, and the same points will not be described repeatedly.

[0112] PH_1 and PH_2 correspond to the first and second PH fields, respectively, and may indicate, for example, the PH for TRP1 and the PH for TRP2. In addition, "_1" and "_2" attached to other fields indicate that the fields correspond to the first and second PH fields, respectively.

[0113] For example, P_1 and P_2 correspond to the first and second P fields in the second embodiment, MPE_1 and MPE_2 correspond to the first and second MPE fields in the third embodiment, and P ＣＭＡＸ _1 and P ＣＭＡＸ _2 is the first and second P of the first embodiment ＣＭＡＸ The fields may correspond to the fields. Note that "_1" and "_2" may not be written, or may be written differently.

[0114] The V field indicates whether the immediately following PH field is a real or virtual PHR. For example, V=1 may mean that the immediately following PHR field is a virtual PHR, and V=0 may mean that the immediately following PHR field is a real PHR (or vice versa).

[0115] 6 is a diagram showing an example of a multiple-entry PHR MAC CE in the first to third embodiments. Differences from FIG. 2 will be explained, and the same points will not be explained again. Also, the same fields as those in FIG. 5 will not be explained again.

[0116] PH_j,1 and PH_j,2 correspond to the first and second PH fields, respectively, and may indicate, for example, a PH for TRP1 and a PH for TRP2. In addition, "_j,1" and "_j,2" attached to other fields indicate that the fields correspond to the first and second PH fields, respectively. Note that "_j,1" and "_j,2" may not be written, or may be written differently.

[0117] In FIG. ｉ The field corresponds to the field indicating that one or two PHRs are reported, and C ｉ Indicates whether an octet (a string of 8 bits as shown) containing PHR_j,2 corresponding to the field exists. For example, X ｉ = 1 exists, X ｉ = 0 may mean not present (and vice versa).

[0118] In addition, X ０ The field may correspond to a field indicating that one or two PHRs are reported for serving cell index=0 (or PCell or SpCell). ０ The field may be an R field.

[0119] In addition, X ｉ Field (X ｉThe octet containing the PHR field may not be included in the PHR MAC CE. If the number of PHs reported for each serving cell is configured, if reporting two PHRs for two TRPs is configured / enabled, etc., then X ｉ There is no need to include the field.

[0120] <Others> At least one of the above-described embodiments may be applied when the DCI specifies STRP PUSCH repetition or single transmission (in other words, PUSCH transmission without repetition) for a serving cell, or when the DCI specifies MTRP PUSCH repetition for a serving cell.

[0121] In each embodiment, "reporting a PHR" may mean "reporting a PHR for a serving cell for which STRP PUSCH repetition / single transmission / MTRP PUSCH repetition is specified by DCI." In the present disclosure, the reported PHR may be a Type 1 PH or another type of PH.

[0122] In addition, the first PH (PH indicated by the first PH field) and the second PH (PH indicated by the second PH field) appearing in each embodiment may correspond to at least one of the following cases: - Case A: The first PH is an actual PH, and the second PH is an actual PH; - Case B: The first PH is an actual PH, and the second PH is a virtual PH; - Case C: The first PH is a virtual PH, and the second PH is a virtual PH; - Case D: The first PH is a virtual PH, and the second PH is an actual PH.

[0123] In the present disclosure, a UE may have multiple panels (UL panels, panels available for UL transmission). Note that in the present disclosure, the terms panel, UE antenna group, UE antenna port group, UE capability value, and UE capability value set may be interchangeable. Furthermore, the multiple panels may support different numbers of antenna ports, different numbers of SRS ports, different numbers of layers, different numbers of beams, different transmit powers, and different equivalent isotopically radiated powers (EIRPs). (In other words, different panels may transmit / receive different parameters (elements) of these parameters.)

[0124] UEs that support multiple panels and UEs that do not support multiple panels may apply different options (aspects / configurations / controls) of the first / second / third embodiments described above.

[0125] In addition, different options (aspects / configurations / controls) of the first, second, and third embodiments may be applied when two PHRs / two TRPs / two beams (SRS resource sets / SRIs / SRI fields) of an MTRP PUSCH repetition are associated with the same panel and when they are associated with different panels. For example, a PHR MAC CE reporting two PH fields for the same panel may have a different configuration from a PHR MAC CE reporting two PH fields for different panels.

[0126] It should be noted that at least one of the above-described embodiments may be applied only to UEs that have reported or support a particular UE capability.

[0127] The specific UE capability may indicate at least one of the following: whether it supports multi-TRP PUSCH repetition; two PH / P (per serving cell); ＣＭＡＸ / P / MPE field (including PHR MAC CE) is supported or not.

[0128] In addition, the specific UE capabilities may be determined for each serving cell.

[0129] Furthermore, at least one of the above-described embodiments may be applied when specific information related to the above-described embodiments is configured in the UE by higher layer signaling (if not configured, for example, the operation of Rel. 15 / 16 is applied). For example, the specific information may include information indicating that multi-TRP PUSCH repetition is enabled, information indicating that multiple PH / P ＣＭＡＸ The information may be information indicating that the PHR MAC CE including the PHR / P / MPE fields is enabled / configured, or any RRC parameter for a specific release (e.g., Rel. 17), etc. Also, the UE may be configured using higher layer parameters to determine based on which of the above-mentioned embodiments / cases / conditions the PHR control is to be performed.

[0130] The above-described embodiment may be applied to a case where PUSCH repetition type A / type B is used.

[0131] It should be noted that the above-described embodiments may be applied when a specific mapping pattern of MTRP repetition (cyclical, sequential, half-half, etc.) is used.

[0132] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0133] 7 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0134] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0135] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0136] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0137] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0138] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0139] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0140] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0141] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0142] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0143] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0144] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0145] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0146] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0147] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.

[0148] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0149] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0150] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0151] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0152] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0153] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0154] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0155] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0156] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0157] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0158] (Base Station) Fig. 8 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0159] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0160] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0161] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0162] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0163] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0164] The transmitting / receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0165] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0166] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0167] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0168] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0169] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0170] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0171] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0172] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0173] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0174] The transmitter and receiver of the base station 10 in the present disclosure may be configured by at least one of the transmitter / receiver 120, the transmitter / receiver antenna 130, and the transmission path interface 140.

[0175] In addition, the transceiver unit 120 may transmit, to the user terminal 20, information (e.g., an RRC parameter) that configures the inclusion of two Power Headroom (PH) fields in a Medium Access Control (MAC) control element for one serving cell.

[0176] The transceiver 120 determines whether or not the P field is related to at least one of the two PH fields. ＣＭＡＸ，ｆ，ｃ The MAC control element including the field may be received from the user terminal 20 .

[0177] (User Terminal) Fig. 9 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0178] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0179] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0180] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0181] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0182] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0183] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0184] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0185] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0186] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0187] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0188] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0189] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0190] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0191] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0192] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0193] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0194] The control unit 210 includes two Power Headroom (PH) fields for one serving cell, and determines the P related to at least one of the two PH fields. ＣＭＡＸ，ｆ，ｃ A Medium Access Control (MAC) control element may be generated that includes the fields.

[0195] The transceiver 220 may transmit the MAC control element.

[0196] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0197] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0198] For example, a base station, a user terminal, or the like according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 10 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0199] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0200] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0201] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0202] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0203] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0204] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0205] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0206] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0207] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0208] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0209] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0210] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0211] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0212] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0213] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0214] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0215] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0216] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0217] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0218] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0219] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0220] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0221] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0222] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0223] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0224] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0225] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0226] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0227] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0228] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0229] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0230] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0231] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0232] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0233] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0234] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0235] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0236] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0237] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0238] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0239] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0240] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0241] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0242] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0243] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0244] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0245] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0246] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0247] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0248] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0249] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0250] 11 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0251] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0252] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0253] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0254] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0255] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0256] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0257] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0258] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0259] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0260] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0261] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0262] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0263] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0264] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0265] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0266] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0267] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0268] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0269] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0270] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0271] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "deciding" some action.

[0272] Furthermore, "judgment (decision)" may be read as "assuming," "expecting," "considering," or the like.

[0273] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0274] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0275] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0276] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0277] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0278] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0279] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

[0280] This application is based on Japanese Patent Application No. 2022-25117, filed February 21, 2022, the contents of which are incorporated herein in their entirety.

Claims

1. A method for supporting a physical uplink shared channel (PUSCH) repetition of multiple transmitting / receiving points (TRPs) and configuring two Power Headroom Reports (PHRs), comprising: providing two Power Headroom (PH) fields for one serving cell and one PHR field commonly used for calculating the two PH fields; ＣＭＡＸ，ｆ，ｃ A control unit for generating a Medium Access Control (MAC) control element including a field; A terminal having a transmitter that transmits the MAC control element.

2. A terminal as described in claim 1, wherein, of the two PH fields, a first PH field indicates a PH for a first TRP, and a second PH field indicates a PH for a second TRP.

3. A method for supporting a physical uplink shared channel (PUSCH) repetition of a multi-transmit / receive point (TRP) and configuring two Power Headroom Reports (PHRs), comprising: providing two Power Headroom (PH) fields for one serving cell and one PHR field commonly used for calculating the two PH fields; ＣＭＡＸ，ｆ，ｃ generating a Medium Access Control (MAC) control element including a field; and transmitting the MAC control element.

4. A transmitter that supports multiple transmission / reception point (TRP) physical uplink shared channel (PUSCH) repetition and transmits settings related to two power headroom reports (PHRs) to a terminal; Two Power Headroom (PH) fields for one serving cell and one P field commonly used for calculating the two PH fields ＣＭＡＸ，ｆ，ｃ A base station having a receiving unit for receiving a MAC control element including a field from the terminal.

5. A system having a terminal and a base station, The terminal includes: A controller that generates a Medium Access Control (MAC) control element including two Power Headroom (PH) fields for one serving cell and one P CMAX,f,c field commonly used for calculating the two PH fields when supporting a Physical Uplink Shared Channel (PUSCH) repetition of multiple transmission / reception points (TRPs) and two Power Headroom Reports (PHRs) are configured; a transmitter for transmitting the MAC control element; The base station, A system having a receiver for receiving the MAC control element.