Terminal, wireless communication method and base station

Abstract

A terminal according to one embodiment of the present disclosure includes: a receiving unit for receiving a downlink control information (DCI) for a plurality of physical uplink control channels (PUCCHs); and a control unit for controlling the transmission of the PUCCH based on an extended transmit power control command field (TPC command field) and spatial relationship information (SRI) corresponding to an index associated with the TPC contained in the DCI. According to one embodiment of the present disclosure, appropriate repeated transmission of the PUCCH can be achieved.

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Release (Rel.) 8, 9 of the Third Generation Partnership Project (3GPP)).

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

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In Rel.15NR, a user terminal (user terminal, User Equipment (UE)) may also be set with spatial relationship information (also referred to as spatial relationship information (SRI)) related to a physical uplink control channel (Physical Uplink Control Channel (PUCCH)). In Rel.15NR, control is performed so that one PUCCH SRI is activated for one PUCCH resource within a certain time.

[0009] In NR, in order to improve the reliability of PUCCH, the UE is studying to repeatedly send PUCCH to multiple transmission and reception points. The repeated transmission of PUCCH can also be called PUCCH repetition.

[0010] However, if the NR specifications to date are followed, different SRIs cannot be applied in PUCCH repetitions, and the reception quality of PUCCH cannot be effectively improved. In this case, for example, spatial diversity gain and high-rank transmission using multiple transmission and reception points cannot be properly achieved, and there is a concern that the increase in communication throughput will be suppressed.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can implement appropriate PUCCH repetitive transmission.

[0012] Means for solving problems

[0013] A terminal involved in one method of the present disclosure comprises: a receiving unit, which receives a downlink control information, i.e., DCI, for multiple physical uplink control channels, i.e., multiple PUCCHs; and a control unit, which controls the transmission of the PUCCH based on an extended transmit power control command field, i.e., an extended TPC command field, contained in the DCI, and spatial relationship information, i.e., SRI, corresponding to an index associated with the TPC.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, appropriate PUCCH repetitive transmission can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A as well as Figure 1B This is a diagram showing an example of the association between the extended TPC command field and the closed-loop index.

[0017] Figure 2A as well as Figure 2BThis is a diagram showing another example of the association between the extended TPC command field and the closed-loop index.

[0018] Figure 3A as well as Figure 3B This is a diagram showing an example of the association between the extended TPC command field and spatial relationship information (SRI).

[0019] Figure 4 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0020] Figure 5 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0021] Figure 6 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0022] Figure 7 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0023] (Spatial relationship information)

[0024] In NR, the UE controls the transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and coding) of at least one of an uplink signal and a channel (also expressed as signal / channel) based on a specific spatial relation.

[0025] The spatial relationship applied to a specific signal / channel may also be determined by spatial relationship information (Spatial Relation Information (SRI)) notified (set) using higher layer signaling.

[0026] In addition, 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.

[0027] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0028] For example, in Rel-15 NR, the spatial relationship information (RRC's "PUCCH-SpatialRelationInfo" information element) between a specific reference signal (Reference Signal (RS)) and an uplink control channel (Physical Uplink Control Channel (PUCCH)) can also be included in the PUCCH setting information (RRC's "PUCCH-Config" information element) and set to the UE.

[0029] The specific RS may be at least one of a synchronization signal block (Synchronization Signal Block (SSB)), a channel state information reference signal (CSI-RS)), and a measurement reference signal (Sounding Reference Signal (SRS)).

[0030] The set SRI may also include an SRI identifier (SRI Identifier (ID)) for identifying (marking) the SRI. In addition, the SRI may also include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific RS. In addition, these spatial relationship information may also include a service cell index corresponding to the above-mentioned specific RS, a bandwidth part (Bandwidth Part (BWP)) ID, etc.

[0031] In the case where spatial relationship information related to SSB or CSI-RS and PUCCH is set, the UE may also transmit the PUCCH using the same spatial domain filter as the spatial domain filter used for receiving the SSB or CSI-RS. That is, in this case, the UE may also assume that the UE receiving beam of the SSB or CSI-RS is the same as the UE transmitting beam of the PUCCH.

[0032] When the spatial relationship information related to SRS and PUCCH is set, the UE may also use the same spatial domain filter as that used for the transmission of the SRS to transmit the PUCCH. That is, in this case, the UE may also assume that the UE transmission beam of the SRS is the same as the UE transmission beam of the PUCCH.

[0033] In addition, the spatial domain filter used for transmission of the base station, the downlink spatial domain transmission filter, and the transmission beam of the base station can also be replaced with each other. The spatial domain filter used for reception of the base station, the uplink spatial domain receive filter, and the reception beam of the base station can also be replaced with each other.

[0034] In addition, the spatial domain filter used for UE transmission, the uplink spatial domain transmission filter, and the UE's transmission beam can also be replaced with each other. The spatial domain filter used for UE reception, the downlink spatial domain receive filter, and the UE's receive beam can also be replaced with each other.

[0035] The SRI may be configured for the UE in units of PUCCH configuration (PUCCH-Config). The SRI configured in the PUCCH configuration may be applied to all PUCCH resources configured in the PUCCH configuration.

[0036] In the case where more than one SRI related to PUCCH is set, the UE may also perform control so as to activate one PUCCH SRI for one PUCCH resource within a certain time based on PUCCH spatial relation Activation / Deactivation MAC CE.

[0037] (PUCCH Transmission Power Control)

[0038] In NR, the transmission power of PUCCH is controlled based on the TPC command (also called value, increase or decrease value, correction value, indication value, etc.) represented by the value of a specific field (also called TPC command field, first field, etc.) within DCI.

[0039] The TPC command field may also be included in a specific DCI (e.g., DCI format 1_0 / 1_1 / 1_2 / 2_2). In Rel.16NR, the TPC command field may also have a bit length of 2 bits. In addition, a field indicating closed-loop power control (e.g., a closed loop indicator field) may also be included in a specific DCI (e.g., DCI format 2_2).

[0040] For example, using the index l of the power control adjustment state, the PUCCH transmission power (P PUCCH、b,f,c (i,q u ,q d ,l)) can also be expressed by the following formula (1).

[0041] The power control adjustment state may also be referred to as a PUCCH power control adjustment state, a first or second state, or the like.

[0042] Furthermore, the PUCCH transmission opportunity i is a specific period during which the PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0043] [Mathematical formula 1]

[0044] (Formula 1)

[0045]

[0046] In formula (1), P CMAX,f,c(i) For example, the transmission power (also referred to as maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i. O_PUCCH,b,f,c (q u) is, for example, a parameter related to a target receiving power set for activating UL BWP b of carrier f of serving cell c in transmitting opportunity i (for example, also referred to as a parameter related to a transmitting power offset, a transmitting power offset P0, or a target receiving power parameter, etc.).

[0047] M PUCCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to the PUCCH for transmission opportunity i in the activated ULBWP b for carrier f with serving cell c and subcarrier spacing μ. b,f,c (q d ) is, for example, an index q of a reference signal for a downlink BWP (path loss reference RS, DL RS for path loss measurement, PUCCH-PathlossReferenceRS) associated with an activated UL BWP b of a carrier f of a serving cell c. d The path loss is calculated in the user terminal.

[0048] Δ F_PUCCH (F) is a higher layer parameter provided for each PUCCH format. TF,b,f,c (i) is a transmission power adjustment component (offset) for UL BWP b of carrier f of serving cell c.

[0049] g b,f,c (i, l) is the value of the TPC command of the power control adjustment state index l based on the activated UL BWP of the serving cell c and the carrier f of the transmission opportunity i (e.g., power control adjustment state, cumulative value of TPC commands, closed loop based value, PUCCH power adjustment state). b,f,c (i, l) can also be expressed by formula (2). l can also be called a closed loop index.

[0050] [Mathematical formula 2]

[0051] (Formula 2)

[0052]

[0053] In formula (2), δ PUCCH,b,f,c (m, l) is the TPC command value in PUCCH transmission opportunity m. C(C_i)-1 m＝0 δ PUCCH,b,f,c (m,l) is the K before the PUCCH transmission opportunity i-i0 PUCCH (i-i0)-1 symbol and K before the PUCCH transmission opportunity i PUCCH(i) The group C between code elements (C i ) in a set of TPC command values ​​for a certain PUCCH transmission opportunity. Here, i0 is an integer greater than 1. The TPC command value in a certain PUCCH transmission opportunity can be either a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 1_0 or 1_1) detected by the activation UL BWPb of carrier f of serving cell c, or a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled by a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUCCH-RNTI) (e.g., CRC-scrambled).

[0054] When the UE is provided with information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relationship information (PUCCH-SpatialRelationInfo), l={0,1}. When the UE is not provided with information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relationship information, l=0.

[0055] In the case where the UE obtains a TPC command value from DCI format 1_0 or 1_1, and in the case where the UE is provided with PUCCH spatial relationship information, the UE may also obtain a mapping (associate, associate) between the PUCCH spatial relationship information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) through the index provided by the PUCCH P0 ID (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). In the case where the UE receives an activation command including a value of the PUCCH spatial relationship information ID, the UE may also determine the value of the closed-loop index providing the value of l through a link to the corresponding PUCCH P0 ID.

[0056] When the UE activates UL BWP b for carrier f of serving cell c, the higher layer provides the P power adjustment state l for the corresponding PUCCH. O_PUCCH,b,f,c (q u ) value, g b,f,c (k, l) = 0, k = 0, 1, ..., i. In the case where the UE is provided with PUCCH spatial relationship information, the UE may alsou The PUCCH spatial relationship information associated with the PUCCH with the P0 ID and the closed-loop index value corresponding to l is obtained according to q u The value of l is determined by the value of .

[0057] q u It may be a PUCCH P0 ID (p0-PUCCH-Id) indicating a PUCCH P0 (P0-PUCCH) within a PUCCH P0 set (p0-Set).

[0058] In addition, equations (1) and (2) are merely examples and are not limited thereto. The user terminal only needs to control the transmission power of the PUCCH based on at least one parameter illustrated in equations (1) and (2), and may include additional parameters or omit some parameters. In addition, in the above equations (1) and (2), the transmission power of the PUCCH is controlled for each activated UL BWP of a certain carrier of a certain serving cell, but the present invention is not limited thereto. At least a part of the serving cell, carrier, BWP, and power control adjustment state may also be omitted.

[0059] (Multiple TRP)

[0060] In NR, research is underway to allow UE to perform UL transmission (e.g., PUCCH transmission) to one or more Transmission / Reception Point (TRP) (Multi-TRP (M-TRP)).

[0061] As an example, research is underway to improve the reliability of PUCCH for use cases (or services) for ultra-high reliability and low latency, such as Ultra Reliable and Low Latency Communications (URLLC), by repeatedly sending PUCCH with different SRIs applied to multiple TRPs. Repeated transmission of PUCCH may also be referred to as PUCCH repetition. Repeated transmission may also be referred to as repetition.

[0062] In addition, the SRI may correspond to a beam. For example, the UE may assume that PUCCHs of different SRIs are transmitted using different beams.

[0063] By repeatedly transmitting the PUCCH, it is possible to expect an improvement in the reception quality of the PUCCH on the network side. However, in the current Rel.15 / 16 NR, only the same spatial relationship is allowed for repeated transmission of the PUCCH.

[0064] More specifically, in the repeated transmission of PUCCH across multiple TRPs, multiple spatial relationship information (SRI) is set / activated / indicated for multiple TRPs. In this case, if the channel state between the UE and different TRPs is different, independent closed-loop power control for multiple TRPs is required (for example, power control such as indexes (e.g., closed-loop indexes) associated with different TPCs corresponding to different SRIs).

[0065] However, there is insufficient research on how to indicate multiple TPC commands for multiple closed-loop power controls through one DCI, and it is impossible to perform control suitable for multiple SRIs. In addition, in Rel.15 / 16, a maximum of two independent closed-loop power controls are supported, but if UL transmission across multiple TRPs is considered, a larger number of independent closed-loop power controls are required.

[0066] Therefore, if the NR specifications to date are followed, different SRIs cannot be applied in PUCCH repetitions, and the reception quality of PUCCH cannot be effectively improved. In this case, spatial diversity gain and high-rank transmission when using multiple TRPs cannot be properly achieved, and there is a concern that the increase in communication throughput will be suppressed.

[0067] Therefore, the inventors of the present invention have come up with a method for realizing appropriate PUCCH repetition transmission. In one aspect of the present disclosure, for example, for PUCCH repetition using different spatial relationships, a UE can appropriately determine the number of repetitions.

[0068] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0069] In addition, in the present disclosure, "A / B" may also mean "at least one of A and B". In addition, setting / activation / indication may also mean at least one of setting through high-layer signaling (e.g., RRC signaling), activating through MAC signaling (e.g., MAC CE), and indicating through physical layer signaling (e.g., DCI).

[0070] In addition, in the present disclosure, activation, deactivation, indication (or indication), selection, configuration, update, determination, etc. may also be used interchangeably. In addition, in the present disclosure, sequence, list, set, group, cluster, subset, etc. may also be used interchangeably.

[0071] In the present disclosure, panel, beam, panel group, beam group, uplink (Uplink (UL)) transmission entity, TRP, spatial relationship information (SRI), combination of SRI, spatial relationship information for PUCCH, pucch-spatialRelationInfo, spatialRelationInfo, spatial relationship, control resource set (COntrol REsourceSET (CORESET)), physical downlink shared channel (Physical Downlink Shared Channel (PDSCH)), codeword, base station, specific antenna port (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) port), specific antenna port group (e.g., DMRS port group), specific group (e.g., Code Division Multiplexing (CDM)) group, specific reference signal group, CORESET group), specific resource (e.g., specific reference signal resource), specific resource set (e.g., specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), QCL, etc. can also be replaced with each other.

[0072] In the present disclosure, the i-th spatial relationship information (pucch-spatialRelationInfo) may also mean the i-th spatial relationship information (i is an integer) set / activated / indicated for a certain PUCCH resource when multiple spatial relationship information is set / activated / indicated for the certain PUCCH resource. In addition, in the present disclosure, the i-th spatial relationship information may also mean the spatial relationship information set / activated / indicated for the i-th PUCCH resource when multiple PUCCH resources are set / activated / indicated for repeated transmission of PUCCH.

[0073] In the present disclosure, the number of spatial relationship information (pucch-spatialRelationInfo) may also mean the number of spatial relationship information set / activated / indicated for a certain PUCCH resource when multiple spatial relationship information is set / activated / indicated for the certain PUCCH resource. In addition, in the present disclosure, the number of spatial relationship information (pucch-spatialRelationInfo) may also mean the number of spatial relationship information set / activated / indicated for repeated transmission of the PUCCH when multiple PUCCH resources are set / activated / indicated for repeated transmission of the PUCCH.

[0074] In addition, for a single DCI, the i-th TRP (TRP#i) may also mean the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0075] In addition, for multi-DCI, the i-th TRP (TRP#i) can also mean the CORESET corresponding to the CORESET pool index = i, the i-th TCI state, the i-th CDM group, etc. (i is an integer).

[0076] The panel may also be associated with at least one of a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group for a group-based beam report.

[0077] In addition, the panel identifier (Identifier (ID)) and the panel can also be replaced with each other. That is, the TRP ID and the TRP, the CORESET group ID and the CORESET group, etc. can also be replaced with each other.

[0078] In the present disclosure, index, ID, indicator, resource ID may also be replaced with each other. In the present disclosure, list, group, cluster, subset, etc. may also be replaced with each other.

[0079] In the present disclosure, the description simply referred to as "spatial relationship" can also be replaced by the spatial relationship of PUCCH.

[0080] The PUCCH repetition disclosed in the present invention may also be replaced with MTRP-based repetition, Rel.17 repetition, repetition using different spatial relationships, etc. In addition, the PUCCH is described in the following example as the PUCCH used in the transmission of the Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) for PDSCH, but it may also be the PUCCH used for the transmission of at least one UCI such as HARQ-ACK, SR, CSI (e.g., non-periodic CSI), and may also be replaced in this way.

[0081] In addition, the multiple spatial relationship information (SRI) in the present disclosure can also be replaced with SRI sequences, SRI sets, SRI patterns, SRIs applied in PUCCH repetitions, etc.

[0082] In the following implementations, the PUCCH across multiple TRPs may be replaced with repeated PUCCH across multiple TRPs, or may be simply replaced with repeated PUCCH, repeated transmission, multiple PUCCH transmissions, etc.

[0083] (Wireless Communication Method)

[0084] <First embodiment>

[0085] In the first embodiment, a specific index determined by the UE for repeated transmission of PUCCH using multiple TRPs is described. The specific index may also be an index associated with TPC (e.g., a closed-loop index). The UE may also control the transmission of multiple PUCCHs based at least on the specific index.

[0086] The number of candidates for a specific index (e.g., closed-loop index) determined by the UE may be increased to a specific number (e.g., N) compared to Rel.15 / 16. The specific number N may be, for example, 4. The possible value of the specific index may be, for example, greater than 0 and less than N-1.

[0087] At this time, in the RRC setting, the correspondence between the spatial relationship information (SRI, for example, pucch-spatialRelationInfo) and N specific indexes can also be set to the UE. With respect to the correspondence, the UE can also be updated through higher layer signaling (for example, MAC CE).

[0088] The UE may determine the value of the specific index corresponding to each SRI specified by the DCI based on the correspondence relationship.

[0089] In addition, when the candidate number of a specific index is N, the number of bits of the field indicating closed-loop power control (e.g., closed-loop indicator field) included in a specific DCI format (e.g., DCI format 2_2) may be increased to log2(N) bits compared to Rel.15 / 16. For example, when N=4, the field may also have a bit length of 2 bits. A specific DCI format may also be scrambled by a specific RNTI (e.g., at least one of TPC-PUSCH-RNTI and TPC-PUCCH-RNTI).

[0090] According to the first embodiment, even in the case of repeated transmission of PUCCH using multiple TRPs, it is possible to appropriately determine the index associated with TPC.

[0091] <Second embodiment>

[0092] In a second embodiment, the number of bits of a TPC command field included in a DCI for scheduling PUCCH transmission across multiple TRPs and the association of the TPC command field with an index associated with TPC (e.g., a closed loop index) are described. The UE may also control multiple PUCCH transmissions based at least on the index.

[0093] The number of bits of the TPC command field included in a DCI (e.g., DCI format 1_0 / 1_1 / 1_2) that schedules PUCCH transmission across multiple TRPs can also be extended to a specific number of bits (e.g., 2M) compared to the number of bits in Rel.15 / 16. In the present disclosure, M can be either the number of TRPs or the number of spatial relationship information (SRI, e.g., pucch-spatialRelationInfo) that can be set / activated / indicated for PUCCH transmission across multiple TRPs.

[0094] For example, when SRI is indicated via DCI for PUCCH transmission for two TRPs, the TPC command field may also be extended to 4 bits.

[0095] The association between the extended TPC command field and a specific index associated with TPC (e.g., a closed-loop index) may also follow at least one of the following associations 1 or 2. The closed-loop index is described below, but the closed-loop index of the present disclosure may also be replaced by any specific index associated with TPC.

[0096] [Relation 1]

[0097] When the extended TPC command field is divided into bits of every specific number (for example, 2, 4, etc.), the xth (x is an arbitrary integer) small (or large) specific number of bits can also be associated with the xth spatial relationship information (SRI, for example, pucch-spatialRelationInfo) set / activated / indicated.

[0098] Figure 1A FIG. 1 is a diagram showing an example of the association between the extended TPC command field and the closed loop index. Figure 1A In the example shown, the case where M=2 is shown, the first (first) SRI corresponds to the closed-loop index l=2, and the second (second) SRI corresponds to the closed-loop index l=1. Figure 1AIn the example, the left side of the TPC command field represents the low-order bits, and the right side represents the high-order bits. At this time, the low-order 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l=2 corresponding to the first SRI, and the high-order 2 bits (n2 and n3) correspond to the closed-loop index l=1 corresponding to the second SRI.

[0099] In addition, in the figures shown in the present disclosure, the SRI, the value of the closed-loop index, the number of bits and the value of the TPC command field are all examples and are not limited to this. In addition, in the figures shown in the present disclosure, for convenience, the left side of the TPC command field represents the lower bits and the right side represents the higher bits, but it is not limited to this.

[0100] [Relation 2]

[0101] When the extended TPC command field is divided into every specific number (for example, two) bits, the xth small (or large) specific number of bits can also be associated with the spatial relationship information (SRI) corresponding to the xth small (or large) closed-loop index set / activated / indicated.

[0102] In the present disclosure, “small” may be replaced by “large.” In addition, low bit and lowest bit may be replaced by high bit and highest bit, respectively.

[0103] Figure 1B FIG. 1 is a diagram showing an example of the association between the extended TPC command field and the closed loop index. Figure 1B In the example shown, the case of M=2 is shown, the first (first) SRI corresponds to the closed-loop index l=2, and the second (second) SRI corresponds to the closed-loop index l=1. At this time, the lower 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l=1 corresponding to the second SRI, and the upper 2 bits (n2 and n3) correspond to the closed-loop index l=2 corresponding to the first SRI.

[0104] In addition, when at least two of the multiple SRIs set / activated / indicated correspond to the same closed-loop index, the association of the extended TPC command field with the specific index associated with the TPC may also follow at least one of the following associations 2-1 or 2-2.

[0105] "Relation 2-1"

[0106] The valid bits of the TPC command may also be determined based on the values ​​of different closed-loop indices corresponding to the configured / activated / indicated SRI. For the TPC command field, the UE may also determine the valid bits based on the number of different closed-loop indices.

[0107] Specifically, the UE may also determine that a specific number (e.g., 2L) of low-order (or high-order) bits of the TPC command field included in the DCI are valid bits. For bits other than these, they may also be set to fixed values ​​(e.g., 0 or 1). In addition, the UE may also ignore the bits other than these. At this time, L may also be the number of values ​​of different closed-loop indexes corresponding to the set / activated / indicated SRI.

[0108] Figure 2A FIG. 4 is a diagram showing another example of the association between the extended TPC command field and the closed loop index. Figure 2A In the example shown, the first SRI and the second SRI correspond to the closed-loop index l = 1, and the third SRI corresponds to the closed-loop index l = 2. At this time, the lowest 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l = 1 corresponding to the first SRI and the second SRI, and the next lowest 2 bits (n2 and n3) correspond to the closed-loop index l = 2 corresponding to the third SRI.

[0109] At this time, the most significant 2 bits (n4 and n5) of the TPC command field may be set to fixed values ​​(eg, 0 or 1).

[0110] "Relation 2-2"

[0111] The valid bits of the TPC command may also be determined based on at least one of the number of TRPs (PUCCH) or the number of SRIs that can be set / activated / indicated for PUCCH transmission based on multiple TRPs. For the TPC command field, the UE may also determine the valid bits based on the number of TRPs (PUCCH) or at least one of the number of SRIs that can be set / activated / indicated for PUCCH transmission based on multiple TRPs.

[0112] Specifically, the UE may also determine that a specific number (e.g., 2M) of bits in the TPC command field included in the DCI are valid bits. In this case, M may be either the number of TRPs or the number of SRIs that can be set / activated / indicated for PUCCH transmission based on multiple TRPs.

[0113] Regarding the 2L bits (L is, for example, the number of values ​​of different closed-loop indexes corresponding to SRI) in the 2M bits of the TPC command field of the DCI, it is also possible to represent the TPC command corresponding to any closed-loop index. The bits other than these (the remaining 2M-2L bits) may also be set to the same value as any one of the values ​​of the valid bits. In other words, the bits other than these may also be values ​​that copy any one of the values ​​of the valid bits. The bits other than these may also copy the TPC command field value corresponding to the closed-loop index of the same value corresponding to at least two of the multiple SRIs.

[0114] Figure 2B FIG. 4 is a diagram showing another example of the association between the extended TPC command field and the closed loop index. Figure 2B In the example shown, the first SRI and the second SRI correspond to the closed-loop index l = 1, and the third SRI corresponds to the closed-loop index l = 2. At this time, the least significant 2 bits (n0 and n1) of the TPC command field correspond to the closed-loop index l = 1 corresponding to the first SRI and the second SRI, and the most significant 2 bits (n4 and n5) correspond to the closed-loop index l = 2 corresponding to the third SRI.

[0115] At this time, n2 and n3 of the TPC command field are copied to the TPC command field values ​​corresponding to the closed loop indexes of the same value corresponding to at least two of the multiple SRIs. That is, n2 and n3 of the TPC command field are set to the same values ​​as n0 and n1.

[0116] [Modification of the Second Embodiment]

[0117] In the case of supporting dynamic switching between PUCCH transmission using one TRP and PUCCH transmission using multiple TRPs (for example, in the case where one or more SRIs are allowed to be set / activated / indicated), one or more SRIs may also be set / activated / indicated. At this time, in the case where one SRI is set / activated / indicated, the extended TPC command field may also follow at least one of the following methods 1 or 2.

[0118] In addition, this embodiment can also be applied when the number of SRIs (for example, pucch-spatialRelationInfo) set / activated / indicated is smaller than the number of specific periods (for example, transmission opportunities, time slots) set / activated / indicated.

[0119] Method 1

[0120] The UE may also determine that a specific number (e.g., 2) of the lowest (or highest) bits of the TPC command field included in the DCI are valid bits. The other bits may also be set to fixed values ​​(e.g., 0 or 1). In addition, the UE may also ignore the other bits.

[0121] Figure 3A This is a diagram showing an example of the association between the extended TPC command field and the spatial relationship information (SRI). At this time, the least significant 2 bits (n0 and n1) of the TPC command field are used in the TPC command field for the closed-loop index associated with the SRI. On the other hand, the remaining 2 bits (n2 and n3) are set to a fixed value (here, 0).

[0122] Method 2

[0123] The UE may also determine that a specific number (e.g., 2M) of bits in the TPC command field included in the DCI are valid bits. In this case, M may be either the number of TRPs or the maximum number of SRIs that can be set / activated / indicated for PUCCH transmission based on multiple TRPs.

[0124] A portion of the 2M bits of the TPC command field of the DCI (for example, 2 bits) may also represent a TPC command corresponding to any closed-loop index, and the remaining bits (the remaining 2M-2 bits) may also be set to the same value as the portion of the bits.

[0125] Figure 3B This is a diagram showing an example of the association between the extended TPC command field and SRI. At this time, the least significant 2 bits (n0 and n1) of the TPC command field are used in the TPC command field for the closed-loop index associated with SRI. On the other hand, the remaining 2 bits (n2 and n3) are set to valid bits, that is, the same values ​​as n0 and n1.

[0126] According to the variation of the second embodiment, regardless of whether the SRI to be set / activated / indicated is one or multiple, the TPC command of each SRI can be appropriately determined using the extended TPC command field.

[0127] According to the second embodiment and the modification of the second embodiment described above, it is possible to appropriately set the association between the extended TPC command field and the index associated with TPC.

[0128] <Third embodiment>

[0129] In the third embodiment, the UE capability (UE capability) related to the index (eg, closed loop index) associated with TPC is described. The UE may also report (send) the capability information to the NW.

[0130] The UE capability related to the index associated with TPC can also be defined as the maximum value of the total number of the index for multiple (e.g., all) TRPs in a certain service cell. In other words, the UE capability can also be defined as the maximum value of the total number of the index for multiple PUCCHs.

[0131] In addition, the UE capability related to the index associated with the TPC can also be defined as the maximum number of the index for each TRP in a certain service cell. In other words, the UE capability can also be defined as the maximum number of the index for one PUCCH among multiple PUCCHs.

[0132] In addition, the embodiments of the present disclosure may also be applied under at least one of the conditions that the UE reports the UE capability corresponding to the above-mentioned at least one to the NW, and the above-mentioned at least one UE capability is set / activated / indicated to the UE through high-layer signaling. The embodiments of the present disclosure may also be applied when specific high-layer parameters are set / activated / indicated to the UE (for example, information for activating the extended TPC command field, information for setting a closed-loop index greater than 2, parameters for activating M-TRP repetitions, etc.).

[0133] (Wireless Communication System)

[0134] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0135] Figure 4 1 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0136] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0137] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0138] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0139] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0140] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0141] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0142] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0143] Multiple base stations (e.g., RRH) 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0144] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0145] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0146] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0147] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0148] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0149] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0150] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0151] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0152] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0153] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0154] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0155] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0156] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0157] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0158] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0159] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0160] (Base Station)

[0161] Figure 5 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0162] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0163] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0164] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0165] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0166] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0167] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0168] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0169] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0170] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0171] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0172] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0173] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0174] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0175] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0176] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0177] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0178] The transmitting and receiving unit 120 may also transmit a downlink control information (DCI) for a plurality of physical uplink control channels (PUCCHs). The control unit 110 may also control the reception of the PUCCH transmitted based on an extended transmit power control (TPC) command field included in the DCI and spatial relationship information (SRI) corresponding to an index associated with the TPC (first embodiment).

[0179] (User Terminal)

[0180] Figure 62 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0181] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0182] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0183] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0184] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0185] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0186] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0187] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0188] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0189] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0190] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0191] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0192] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0193] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0194] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0195] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0196] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0197] The transmitting and receiving unit 220 may also receive a downlink control information (DCI) for a plurality of physical uplink control channels (PUCCHs). The control unit 210 may also control the transmission of the PUCCH based on an extended transmit power control (TPC) command field included in the DCI and spatial relationship information (SRI) corresponding to an index associated with the TPC (first and second embodiments).

[0198] The control unit 210 may also control the transmission of the PUCCH based on the SRI corresponding to each of the bits of the extended TPC command field divided into a specific number (second embodiment).

[0199] The control unit 210 may also determine the valid bits in the extended TPC command field based on at least one of the number of indexes associated with different TPCs, the number of PUCCHs, and the number of SRIs (second embodiment).

[0200] The control unit 210 may also control to report capability information, wherein the capability information is defined as the maximum value of the total number of indices associated with the TPC for the multiple PUCCHs, or the maximum number of indices associated with the TPC for one PUCCH among the multiple PUCCHs (third embodiment).

[0201] (Hardware Structure)

[0202] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0203] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0204] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 7 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0205] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be used interchangeably. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of the devices shown in the figure, or to exclude some of the devices.

[0206] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0207] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0208] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0209] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0210] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0211] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0212] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0213] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0214] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0215] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0216] (Variation Example)

[0217] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0218] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0219] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0220] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0221] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0222] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0223] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0224] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0225] TTI may also be a transmission time unit of a data packet (transport block), code block, code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is provided, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped may also be shorter than the TTI.

[0226] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0227] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0228] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0229] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0230] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0231] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0232] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0233] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0234] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0235] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0236] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0237] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0238] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0239] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0240] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0241] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0242] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0243] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0244] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0245] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0246] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0247] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0248] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0249] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0250] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0251] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0252] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0253] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0254] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0255] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0256] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0257] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering the Mobility Management Entity (MME)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0258] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0259] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0260] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0261] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0262] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0263] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0264] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0265] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0266] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0267] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0268] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0269] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0270] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0271] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: A receiving unit receives a downlink control information (DCI) for repeated transmission of a physical uplink control channel (PUCCH); and a control unit, in a case where more than one piece of spatial relationship information is activated for resources used for repeated transmission of the PUCCH, controlling the transmission power of the PUCCH based on a specific number of lower bits for a transmission power control command corresponding to a first closed-loop index, i.e., a TPC command, included in the DCI, a specific number of higher bits different from the lower bits for a TPC command corresponding to a second closed-loop index, and at least one of the first closed-loop index and the second closed-loop index corresponding to the one or more pieces of spatial relationship information, When multiple spatial relationship information are activated and the control of the PUCCH transmission power is based on both the first closed-loop index and the second closed-loop index, the total number of bits of the specific number of low-order bits and the specific number of high-order bits is twice the number of activated spatial relationship information.

2. The terminal according to claim 1, wherein: When the one or more spatial relationship information are activated, the control unit uses only one of the specific number of lower bits and the specific number of upper bits in controlling the transmission power of the PUCCH, and ignores the other.

3. The terminal according to claim 1 or claim 2, wherein: The number of the specific number of high-order bits is set through higher-layer signaling.

4. A wireless communication method of a terminal, comprising: The step of receiving a downlink control information (DCI) for repeated transmission of a physical uplink control channel (PUCCH); and In a case where more than one piece of spatial relationship information is activated for resources used for repeated transmission of the PUCCH, a step of controlling the transmission power of the PUCCH based on a specific number of lower bits for a transmission power control command corresponding to a first closed-loop index, i.e., a TPC command, included in the DCI, a specific number of higher bits different from the lower bits for a TPC command corresponding to a second closed-loop index, and at least one of the first closed-loop index and the second closed-loop index corresponding to the one or more pieces of spatial relationship information, When multiple spatial relationship information are activated and the control of the PUCCH transmission power is based on both the first closed-loop index and the second closed-loop index, the total number of bits of the specific number of low-order bits and the specific number of high-order bits is twice the number of activated spatial relationship information.

5. A base station, comprising: A transmitting unit, transmitting a downlink control information (DCI) for repeated transmission of a physical uplink control channel (PUCCH); and A control unit, in a case where more than one piece of spatial relationship information is activated for a terminal for a resource used for repeated transmission of the PUCCH, controls the DCI to include a specific number of low-order bits for a transmission power control command corresponding to a first closed-loop index, that is, a TPC command, and a specific number of high-order bits different from the low-order bits for a TPC command corresponding to a second closed-loop index in order to control the transmission power of the PUCCH by the terminal, At least one of the first closed-loop index and the second closed-loop index corresponds to the one or more spatial relationship information, When multiple spatial relationship information are activated and the control of the PUCCH transmission power is based on both the first closed-loop index and the second closed-loop index, the total number of bits of the specific number of low-order bits and the specific number of high-order bits is twice the number of activated spatial relationship information.

6. A system comprising a terminal and a base station, The terminal has: A receiving unit, receiving a downlink control information (DCI) for repeated transmission of a physical uplink control channel (PUCCH); as well as a control unit, in a case where more than one piece of spatial relationship information is activated for resources used for repeated transmission of the PUCCH, controlling the transmission power of the PUCCH based on a specific number of lower bits for a transmission power control command corresponding to a first closed-loop index, i.e., a TPC command, included in the DCI, a specific number of higher bits different from the lower bits for a TPC command corresponding to a second closed-loop index, and at least one of the first closed-loop index and the second closed-loop index corresponding to the one or more pieces of spatial relationship information, When a plurality of spatial relationship information are activated and control of the transmit power of the PUCCH is based on both the first closed-loop index and the second closed-loop index, a total number of bits of the specific number of lower bits and the specific number of upper bits is twice the number of activated spatial relationship information, The base station has: A sending unit, sending the one DCI; as well as A control unit, when more than one piece of spatial relationship information is activated for resources used for repeated transmission of the PUCCH for a terminal, controls the DCI to include the specific number of low-order bits and the specific number of high-order bits in order for the terminal to control the transmission power of the PUCCH.

Images