Terminal, wireless communication method, base station, and system

Abstract

A terminal according to an aspect of the present disclosure comprises: a control unit that determines two power control parameter values when no physical uplink control channel (PUCCH) space-related information is provided; and a transmission unit that transmits the PUCCH by using both at least one of the two power control parameter values and one or more transmission occasions. Said two values are associated with two respective indexes, and said two indexes are two index values of control resource set (CORESET) pool index or are two index values of transmission configuration indication (TCI) state associated with the code point of one of the fields in downlink control information. According to an aspect of the present disclosure, the power control parameters can be appropriately determined.

Description

Technical Field

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

Background Art

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

[0003] A successor system to LTE (for example, also referred to as 5th generation mobile communication system (5G), 5G+(plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.) is also being considered.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a future wireless communication system (e.g., NR), a user terminal (terminal, user terminal, User Equipment (UE)) controls the transmission process of uplink (UL) transmission (UL channel / UL signal) based on information related to Quasi-Co-Location (QCL) (QCL assumption / Transmission Configuration Indication (TCI) state / spatial relationship) and power control parameters.

[0006] However, there are cases where the method for determining power control parameters is not clear. If the power control parameters are not clear, there is a risk of causing a decrease in communication quality, a decrease in throughput, etc.

[0007] Therefore, one object of the present disclosure is to provide a terminal and a wireless communication method that appropriately determine power control parameters 、 base station and system as one of the purposes.

Means for Solving the Problems

[0008] A terminal according to an aspect of the present disclosure includes a control unit that determines values of first and second power control parameters applied to repeated transmission of a Physical Uplink Control Channel (PUCCH) for a plurality of Transmission / Reception Points (TRPs) when PUCCH spatial relationship information is not provided, and a transmission unit that performs repeated transmission of the PUCCH using the values of the first and second power control parameters and one or more transmission opportunities. and whether the repeated transmission of the PUCCH using the specific PUCCH resource is associated with a first TRP among the plurality of TRPs, a second TRP, or both the first and second TRPs is set for each PUCCH resource including the specific PUCCH resource having

Effects of the Invention

[0009] According to an aspect of the present disclosure, power control parameters can be appropriately set.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] (TCI, Spatial Relationship, QCL) In NR, it is considered to control at least one of the receiving process (e.g., at least one of receiving, demapping, demodulating, decoding) and the transmitting process (e.g., at least one of transmitting, mapping, precoding, modulating, encoding) in a UE for at least one of a signal and a channel (referred to as signal / channel) based on a Transmission Configuration Indication state (TCI state).

[0012] The TCI state may represent what is applied to the downlink signal / channel. What corresponds to the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.

[0013] The TCI state is information regarding the Quasi-Co-Location (QCL) of a signal / channel, and may be called a spatial reception parameter, Spatial Relation Information, etc. The TCI state may be set for each channel or each signal in the UE.

[0014] QCL is an indicator showing the statistical properties of a signal / channel. For example, when a certain signal / channel and another signal / channel are in a QCL relationship, it may mean that at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same (QCL for at least one of these) among these different multiple signals / channels.

[0015] Note that the spatial reception parameter may correspond to the reception beam (e.g., reception analog beam) of the UE, and the beam may be specified based on spatial QCL. The QCL (or at least one element of QCL) in the present disclosure may be read as sQCL (spatial QCL).

[0016] Multiple types (QCL types) of QCL may be defined. For example, four QCL types A - D with different parameters (or parameter sets) that can be assumed to be the same may be provided, and the parameters (which may also be referred to as QCL parameters) are shown below: ·QCL type A (QCL - A): Doppler shift, Doppler spread, average delay, and delay spread, ·QCL type B (QCL - B): Doppler shift and Doppler spread, ·QCL type C (QCL - C): Doppler shift and average delay, ·QCL type D (QCL - D): Spatial reception parameter.

[0017] The assumption by the UE that a certain control resource set (Control Resource Set (CORESET)), channel, or reference signal is in a relationship with a specific QCL (e.g., QCL type D) with another CORESET, channel, or reference signal may be referred to as a QCL assumption.

[0018] The UE may determine at least one of the transmission beam (Tx beam) and the reception beam (Rx beam) of the signal / channel based on the TCI state or QCL assumption of the signal / channel.

[0019] The TCI state may be, for example, information regarding the QCL between the target channel (in other words, the reference signal (Reference Signal (RS)) for the channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by upper layer signaling, physical layer signaling, or a combination thereof.

[0020] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0021] The channel for which the TCI state or spatial relation is set (specified) may be, for example, at least one of a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH).

[0022] Also, the RS having a QCL relation with the channel may be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a Tracking Reference Signal (also referred to as TRS), and a QRS (also referred to as a reference signal for QCL detection).

[0023] The SSB is a signal block including at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The SSB may be referred to as an SS / PBCH block.

[0024] The RS of QCL type X in the TCI state may mean the RS related to a certain channel / signal (DMRS) and QCL type X, and this RS may also be called the QCL source of QCL type X in the TCI state.

[0025] For PDCCH and PDSCH, QCL type A RS must be set, and QCL type D RS may be additionally set. Since it is difficult to estimate the Doppler shift, delay, etc. by receiving a single-shot DMRS, QCL type A RS is used to improve the channel estimation accuracy. QCL type D RS is used for receiving beam determination during DMRS reception.

[0026] For example, TRS1-1, 1-2, 1-3, 1-4 are transmitted, and TRS1-1 is notified as QCL type C / D RS according to the TCI state of PDSCH. By notifying the TCI state, the UE can utilize the information obtained from the results of receiving / measuring the past periodic TRS1-1 for receiving / channel estimation of PDSCH DMRS. In this case, the QCL source of PDSCH is TRS1-1, and the QCL target is PDSCH DMRS.

[0027] (Multi-TRP) In NR, it is being considered that one or more transmission / reception points (TRP) (multi-TRP (MTRP)) perform DL transmission to the UE using one or more panels (multi-panel). Also, it is being considered that the UE performs UL transmission to one or more TRP using one or more panels.

[0028] Note that the multiple TRP may correspond to the same cell identifier (cell ID), or may correspond to different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0029] Multi-TRPs (e.g., TRP#1, #2) are connected by ideal / non-ideal backhaul, and information, data, etc. may be exchanged. Different code words (Code Word (CW)) and different layers may be transmitted from each TRP of the multi-TRPs. As a form of multi-TRP transmission, Non-Coherent Joint Transmission (NCJT) may be used.

[0030] In NCJT, for example, TRP#1 modulates and maps the first code word, layer-maps it to the first number of layers (e.g., 2 layers), and transmits the first PDSCH using the first precoding. Also, TRP#2 modulates and maps the second code word, layer-maps it to the second number of layers (e.g., 2 layers), and transmits the second PDSCH using the second precoding.

[0031] Note that multiple PDSCHs (multi-PDSCHs) subject to NCJT may be defined to partially or completely overlap with respect to at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap in at least one of the time and frequency resources.

[0032] These first PDSCH and second PDSCH may be assumed to be not quasi-co-located. The reception of the multi-PDSCH may be reinterpreted as the simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., QCL type D).

[0033] Multiple PDSCHs from multiple TRPs (which may be referred to as multi-PDSCH (multiple PDSCH)) may be scheduled using one DCI (single DCI, single PDCCH) (single-master mode, multi-TRP based on single DCI (single-DCI based multi-TRP)). Multiple PDSCHs from multiple TRPs may be scheduled separately using multiple DCIs (multi-DCI, multiple PDCCH (multiple PDCCH)) (multi-master mode, multi-TRP based on multi-DCI (multi-DCI based multi-TRP)).

[0034] In URLLC for multi-TRP, it is being considered to support repetition of PDSCH (transport block (TB) or codeword (CW)) across multi-TRP. It is being considered to support repetition schemes (URLLC schemes, e.g., scheme 1, 2a, 2b, 3, 4) across multi-TRP in the frequency domain or layer (space) domain or time domain. In scheme 1, multi-PDSCHs from multi-TRP are space division multiplexing (SDM). In schemes 2a, 2b, PDSCHs from multi-TRP are frequency division multiplexing (FDM). In scheme 2a, the redundancy version (RV) is the same for multi-TRP. In scheme 2b, the RV for multi-TRP may be the same or different. In schemes 3, 4, multi-PDSCHs from multi-TRP are time division multiplexing (TDM). In scheme 3, multi-PDSCHs from multi-TRP are transmitted within one slot. In scheme 4, multi-PDSCHs from multi-TRP are transmitted in different slots.

[0035] According to such a multi-TRP scenario, more flexible transmission control using high-quality channels is possible.

[0036] To support multi-TRP transmission within a cell (intra-cell, having the same cell ID) and between cells (inter-cell, having different cell IDs) based on multiple PDCCHs, in the RRC configuration information for linking multiple pairs of PDCCH and PDSCH having multiple TRPs, one control resource set (CORESET) within the PDCCH configuration information (PDCCH-Config) may correspond to one TRP.

[0037] If at least one of the following Conditions 1 and 2 is satisfied, the UE may determine that it is a multi-TRP based on multi-DCI. In this case, the TRP may be re-read as the CORESET pool index. [Condition 1] One CORESET pool index is set. [Condition 2] Two different values (for example, 0 and 1) of the CORESET pool index are set.

[0038] If the following condition is satisfied, the UE may determine that it is a multi-TRP based on single-DCI. In this case, the two TRPs may be re-read as two TCI states indicated by MAC CE / DCI. [Condition] "Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE" is used to indicate one or two TCI states for one code point of the TCI field in DCI.

[0039] The DCI for common beam indication may be a UE-specific DCI format (e.g., DL DCI formats (e.g., 1_1, 1_2), UL DCI formats (e.g., 0_1, 0_2)), or a UE-group common DCI format.

[0040] (Path loss RS) Path loss PL in the transmission power control of each of PUSCH, PUCCH, and SRS b,f,c (q d ) [dB] is the index q of the reference signal (RS, path loss reference RS) for the downlink BWP associated with the active UL BWP b of carrier f of serving cell c d calculated by the UE using. In the present disclosure, the path loss reference RS, pathloss(PL)-RS, PLRS, index q d , the RS used for path loss calculation, the RS resource used for path loss calculation, may be read interchangeably with each other. In the present disclosure, calculation, estimation, measurement, tracking, may be read interchangeably with each other.

[0041] When the path loss RS is updated by the MAC CE, it is being considered whether to change the existing mechanism of the higher layer filtered RSRP for path loss measurement.

[0042] When the path loss RS is updated by a MAC CE, path loss measurements based on L1-RSRP may be applied. At the available timing after the MAC CE for updating the path loss RS, the higher layer filtered RSRP is used for path loss measurements, and L1-RSRP may be used for path loss measurements before the higher layer filtered RSRP is applied. At the available timing after the MAC CE for updating the path loss RS, the higher layer filtered RSRP is used for path loss measurements, and the higher layer filtered RSRP of the previous path loss RS may be used before that timing. Similar to the Rel.15 operation, the higher layer filtered RSRP is used for path loss measurements, and the UE may track all path loss RS candidates configured by the RRC. The maximum number of path loss RSs configurable by the RRC may depend on the UE capabilities. If the maximum number of path loss RSs configurable by the RRC is X, path loss RS candidates less than or equal to X are configured by the RRC, and the path loss RS may be selected by the MAC CE from among the configured path loss RS candidates. The maximum number of path loss RSs configurable by the RRC may be 4, 8, 16, 64, etc.

[0043] In the present disclosure, the higher layer filtered RSRP, the filtered RSRP, the layer 3 filtered RSRP may be read interchangeably with each other.

[0044] (Default TCI state / default spatial relation / default PL-RS) In the RRC connection mode, when the TCI information in the DCI (higher layer parameter TCI-PresentInDCI) is set to "enabled", and when the TCI information in the DCI is not set, if the time offset between the reception of the DL DCI (the DCI that schedules the PDSCH) and the corresponding PDSCH (the PDSCH scheduled by the DCI) is smaller than the threshold (timeDurationForQCL) (application condition, the first condition), in the case of non-cross-carrier scheduling, the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest CORESET ID in the latest slot within the active DL BWP of the CC of that (specific UL signal). Otherwise, the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest TCI state ID of the PDSCH within the active DL BWP of the scheduled CC.

[0045] In Rel.15, individual MAC CEs for activation / deactivation of PUCCH spatial relations and for activation / deactivation of SRS spatial relations are required. The PUSCH spatial relations follow the SRS spatial relations.

[0046] In Rel.16, at least one of the MAC CEs for activation / deactivation of PUCCH spatial relations and for activation / deactivation of SRS spatial relations may not be used.

[0047] If in FR2, neither the spatial relation for PUCCH nor the PL-RS is configured (application condition, second condition), the default assumptions for the spatial relation and PL-RS for PUCCH (default spatial relation and default PL-RS) are applied. If in FR2, neither the spatial relation for SRS (SRS resource for SRS, or SRS resource corresponding to the SRI in DCI format 0_1 that schedules PUSCH) nor the PL-RS is configured (application condition, second condition), the default assumptions for the spatial relation and PL-RS for the PUSCH and SRS scheduled by DCI format 0_1 (default spatial relation and default PL-RS) are applied.

[0048] If a CORESET is configured within the active DL BWP on that CC (application condition), the default spatial relation and default PL-RS may be the TCI state or QCL assumption of the CORESET having the lowest CORESET ID within the active DL BWP. If no CORESET is configured within the active DL BWP on that CC, the default spatial relation and default PL-RS may be the active TCI state having the lowest ID of the PDSCH within the active DL BWP.

[0049] In Rel.15, the spatial relation of the PUSCH scheduled by DCI format 0_0 follows the spatial relation of the PUCCH resource having the lowest PUCCH resource ID among the active spatial relations of the PUCCH on the same CC. The network needs to update the PUCCH spatial relations on all SCell even if no PUCCH is transmitted on the SCell.

[0050] In Rel.16, no PUCCH configuration is required for PUSCH scheduled by DCI format 0_0. For PUSCH scheduled by DCI format 0_0, when there is no active PUCCH spatial relation or no PUCCH resource on the active UL BWP within its CC (application condition, second condition), the default spatial relation and default PL-RS are applied to the PUSCH.

[0051] The application conditions for the default spatial relation / default PL-RS for SRS may include that the default beam path loss activation information element for SRS (upper layer parameter enableDefaultBeamPlForSRS) is set to be valid. The application conditions for the default spatial relation / default PL-RS for PUCCH may include that the default beam path loss activation information element for PUCCH (upper layer parameter enableDefaultBeamPlForPUCCH) is set to be valid. The application conditions for the default spatial relation / default PL-RS for PUSCH scheduled by DCI format 0_0 may include that the default beam path loss activation information element for PUSCH scheduled by DCI format 0_0 (upper layer parameter enableDefaultBeamPlForPUSCH0_0) is set to be valid.

[0052] The above threshold may be referred to as the time duration for QCL, "timeDurationForQCL", "Threshold", "Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI", "Threshold-Sched-Offset", schedule offset threshold, scheduling offset threshold, etc.

[0053] (PUCCH Power Control) In NR, the transmission power of PUCCH is controlled based on the TPC command (also referred to as value, increment / decrement value, correction value, indication value, etc.) indicated by the value of the field (also referred to as TPC command field, first field, etc.) in DCI.

[0054] For example, using the index l of the power control adjustment state (PUCCH power control adjustment state), the transmission power (P PUCCH、b,f,c (i,q u ,q d ,l)) [dBm] of PUCCH in the transmission occasion (also referred to as transmission period, etc.) i of the active UL BWP b of carrier f of serving cell c is based on at least one of P CMAX,f,c (i), P O_PUCCH,b,f,c (q u ), M PUCCH RB,b,f,c (i), PL b,f,c (q d ), Δ F_PUCCH (F), Δ TF,b,f,c (i), g b,f,c (i,l). The power control adjustment state may be referred to as a value based on the TPC command of the power control adjustment state index l, a cumulative value of the TPC command, or a value by closed loop. l may be referred to as a closed loop index.

[0055] Also, the PUCCH transmission occasion i is a period during which PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.

[0056] P CMAX,f,c (i) is, 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 occasion i. P O_PUCCH,b,f,c (q uis a parameter related to the target reception power set for the active UL BWP b of carrier f of serving cell c at transmission opportunity i (for example, also referred to as a parameter related to the transmission power offset, transmission power offset P0, or target reception power parameter, etc.).

[0057] M PUCCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to PUCCH for transmission opportunity i in the active UL BWP b of carrier f of serving cell c and subcarrier spacing μ. PL b,f,c (q d ) is, for example, the index q of the reference signal (path loss reference RS, path loss reference RS for path loss measurement, DL-RS for path loss measurement, PUCCH-PathlossReferenceRS) for the downlink BWP associated with the active UL BWP b of carrier f of serving cell c d and is the path loss (path loss estimation [dB], path loss compensation) calculated at the user equipment using this.

[0058] If the UE is not provided with the path loss reference RS (pathlossReferenceRSs), or before the UE is provided with the individual upper layer parameters, the UE uses the RS resources obtained from the SS / PBCH block used by the UE to acquire the MIB to calculate the path loss PL b,f,c (q d ).

[0059] If the UE is given path loss reference RS information (pathlossReferenceRSs within the PUCCH power control information (PUCCH-PowerControl)) and not given PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE obtains the value of the reference signal within the PUCCH path loss reference RS from the PUCCH path loss reference RS-ID (PUCCH-PathlossReferenceRS-Id) having index 0 within the PUCCH path loss reference RS information (PUCCH-PathlossReferenceRS). The resource of this reference signal is in either the same serving cell or, if given, the serving cell indicated by the value of the path loss reference linking information (pathlossReferenceLinking). The path loss reference linking information indicates whether the UE applies the DL of either the special cell (SpCell) or the secondary cell (SCell) corresponding to this UL as the path loss reference. The SpCell may be the primary cell (PCell) in the master cell group (MCG) or the primary secondary cell (PSCell) in the secondary cell group (SCG). The path loss reference RS information indicates a set of reference signals (e.g., CSI-RS configuration or SS / PBCH block) used for PUCCH path loss estimation.

[0060] Δ F_PUCCH (F) is a higher layer parameter given for each PUCCH format. Δ TF,b,f,c (i) is the transmission power adjustment component (offset) for the uplink BWP b of carrier f of serving cell c.

[0061] g b,f,c(i, l) is a value based on the TPC command of the power control adjustment state index l of the active UL BWP of carrier f in serving cell c and transmission opportunity i (e.g., power control adjustment state, cumulative value of TPC commands, value by closed loop, PUCCH power adjustment state). For example, g b,f,c (i, l) is δ PUCCH,b,f,c It may be based on (i, l).

[0062] Here, δ PUCCH,b,f,c (i, l) is a TPC command value, which is included in DCI format 1_0 or DCI format 1_1 detected by the UE in the PUCCH transmission opportunity i of the active UL BWP b of carrier f in serving cell c, or combined with other TPC commands in DCI format 2_2 having a CRC scrambled by a specific RNTI (Radio Network Temporary Identifier) (e.g., TPC-PUSCH-RNTI) and encoded.

[0063] Σ m=0 C(Ci)-1 δ PUCCH,b,f,c δ(m, l) may be the sum of the TPC command values in the set C of TPC command values having a cardinality C (C i ). C i is a set of TPC command values received by the UE between the K i (i - i 0 ) - 1 symbols before the PUCCH transmission opportunity i of the active UL BWP b of carrier f in serving cell c for the PUCCH power control adjustment state l and the K PUCCH (i - i 0 ) symbols before the PUSCH transmission opportunity i. i PUCCH is the smallest positive integer such that the K 0 (i - i 0 ) symbols before the PUSCH transmission opportunity i - i PUCCH are earlier than the K 0 (i) symbols before the PUSCH transmission opportunity i. PUCCH (i) symbols before the PUSCH transmission opportunity i.

[0064] If the PUCCH transmission is in response to the UE's detection of DCI format 1_0 or DCI format 1_1, K PUCCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c that is after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUCCH transmission. If the PUCCH transmission is configured by the configured grant configuration information (ConfiguredGrantConfig), K PUSCH (i) is the number of symbols per slot N in the active UL BWP b of carrier f of serving cell c symb slot equal to the product of the number of symbols and the minimum value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon). PUCCH,min It may be the number of symbols.

[0065] If the UE provides information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relation information (PUCCH-SpatialRelationInfo), l = {0,1}, and if the UE does not provide information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relation information, l may be 0.

[0066] If the UE obtains the TPC command value from DCI format 1_0 or 1_1, and the UE is provided with PUCCH spatial relation information, the UE may obtain the mapping between the PUCCH spatial relation information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) according to the index provided by the P0 ID for PUCCH (p0-PUCCH-Id within PUCCH-PowerControl within PUCCH-Config). If the UE receives an activation command including the value of the PUCCH spatial relation information ID, the UE may determine the value of the closed-loop index providing the value of l through the link to the corresponding P0 ID for PUCCH.

[0067] If, for the active UL BWP b of carrier f of serving cell c of the UE, the setting of the P O_PUCCH,b,f,c (q u ) value is provided by the upper layer, g b,f,c (i, l) = 0, k = 0, 1, …, i. If the UE is provided with PUCCH spatial relation information, the UE may determine the value of l from the value of q u based on the P0 ID for PUCCH corresponding to q, the closed-loop index value corresponding to l, and the PUCCH spatial relation information associated therewith. u

[0068] q u may be the P0 ID for PUCCH (p0-PUCCH-Id) indicating the P0 for PUCCH (P0-PUCCH) within the P0 set for PUCCH (p0-Set).

[0069] If the UE does not provide PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE obtains the P0 value for PUCCH (p0-PUCCH-Value) from the value of the P0-ID for PUCCH equal to the minimum value of the P0-IDs for PUCCH within the p0-Set.

[0070] If the UE provides pathloss reference RSs (pathlossReferenceRSs) and does not provide PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE obtains the value of the reference signal within the PUCCH pathloss reference RS from the PUCCH pathloss reference RS-ID (pucch-PathlossReferenceRS-Id) having index 0 within the PUCCH pathloss reference RS. The obtained RS resource is on the primary cell or, if pathloss reference linking is provided, on the serving cell indicated by the value of the pathloss reference linking.

[0071] If the UE provides that the number of PUCCH power control adjustment states maintained by the UE is two (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relation information, the PUCCH power control adjustment state (closed-loop) index l ∈ {0,1}. If the UE does not provide that the number of PUCCH power control adjustment states maintained by the UE is two or PUCCH spatial relation information, the PUCCH power control adjustment state (closed-loop) index l = 0.

[0072] That is, if the UE does not provide PUCCH spatial relation information, P0, PL-RS, and the closed-loop index are determined according to the rules. In this case, the minimum P0-ID for PUCCH is applied, PUCCH pathloss reference RS-ID = 0 is applied, and l = 0 is applied.

[0073] In the RRC information element (IE), the PUCCH power control information element (PUCCH-PowerControl) includes a set of P0 for PUCCH (p0-Set) which is a set of P0 for PUCCH (P0-PUCCH), and a set of path loss reference RSs for PUCCH (pathlossReferenceRSs) which is a set of PUCCH path loss reference RS (PUCCH-PathlossReferenceRS). The P0 for PUCCH includes a P0-ID for PUCCH (P0-PUCCH-Id) and a P0 value for PUCCH (p0-PUCCH-Value). The PUCCH path loss reference RS includes a PUCCH path loss reference RS-ID (PUCCH-PathlossReferenceRS-Id) and a reference signal (referenceSignal, SSB index or NZP-CSI-RS resource ID).

[0074] (PUSCH Power Control) In NR, the transmission power of PUSCH is controlled based on the TPC command (also referred to as value, increment / decrement value, correction value, etc.) indicated by the value of the field (also referred to as TPC command field, etc.) in the DCI.

[0075] For example, when the UE transmits PUSCH on the active UL BWP b of carrier f of serving cell c using a parameter set (open-loop parameter set) with index j and an index l of the power control adjustment state (PUSCH power control adjustment state), the transmission power of PUSCH (P PUSCH、b,f,c (i,j,q d ,l)) [dBm] is PUSCH、b,f,c (i,j,q d ,l), P O_PUSCH,b,f,c (j), M PUSCH RB,b,f,c (i), α b,f,c (j), PL b,f,c (q d ), Δ TF,b,f,c (i), f b,f,cIt may be based on at least one of (i, l). The power control adjustment state may be referred to as a value based on the TPC command of the power control adjustment state index l, a cumulative value of the TPC command, or a value by a closed loop. l may be referred to as a closed loop index.

[0076] Also, the PUSCH transmission opportunity i is a period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.

[0077] P CMAX,f,c(i) is, for example, the transmission power of the user terminal (also referred to as the maximum transmission power, UE maximum output power, etc.) set for the carrier f of the serving cell c at the transmission opportunity i. P O_PUSCH,b,f,c (j) is, for example, a parameter related to the target reception power set for the active UL BWP b of the carrier f of the serving cell c at the transmission opportunity i (also referred to as a parameter related to the transmission power offset, transmission power offset P0, target reception power parameter, etc.).

[0078] M PUSCH RB,b,f,c (i) is, for example, the number of resource blocks (bandwidth) allocated to the PUSCH for the transmission opportunity i in the active UL BWP b of the carrier f of the serving cell c and the subcarrier spacing μ. α b,f,c (j) is a value provided by a higher layer parameter (also referred to as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0079] PL b,f,c (q d ) is, for example, the path loss (path loss estimation [dB], path loss compensation) calculated by the user terminal using the index q of the reference signal (reference signal (RS), path loss reference RS, path loss reference RS for path loss measurement, DL-RS for path loss measurement, PUSCH-PathlossReferenceRS) for the downlink BWP associated with the active UL BWP b of the carrier f of the serving cell c. d ​

[0080] If the UE is not provided with a path loss reference RS (e.g., PUSCH - PathlossReferenceRS), or if the UE is not provided with individual upper layer parameters, the UE may use the RS resources from the synchronization signal (SS) / physical broadcast channel (PBCH) block (SS block (SSB)) used to obtain the Master Information Block (MIB) to calculate PL b,f,c (q d ) may be calculated.

[0081] If the UE is configured with a number of RS resource indexes up to the value of the maximum number of path loss reference RSs (e.g., maxNrofPUSCH - PathlossReferenceRSs), and a set of respective RS configurations for the RS resource indexes by the path loss reference RS, the set of RS resource indexes may include one or both of the set of SS / PBCH block indexes and the set of channel state information (CSI)-reference signal (RS) resource indexes. The UE may identify the RS resource index q d within the set of RS resource indexes.

[0082] If PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE may use the same RS resource index q d for the corresponding PRACH transmission.

[0083] If the UE is provided with a setting for power control of the PUSCH by a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl), and is provided with one or more values of the ID of the path loss reference RS, a mapping between a set of values for the SRI field within DCI format 0_1 and a set of ID values of the path loss reference RS may be obtained from upper layer signaling (e.g., sri-PUSCH-PowerControl-Id within SRI-PUSCH-PowerControl). The UE determines the RS resource index q from the ID of the path loss reference RS mapped to the SRI field value within DCI format 0_1 that schedules the PUSCH d may be determined.

[0084] If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with PUCCH spatial relation information for the PUCCH resource having the lowest index for each carrier f and serving cell c's active UL BWP b, the UE may use the same RS resource index q as the PUCCH transmission within the said PUCCH resource d for use.

[0085] If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with the spatial setting of the PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_1 that does not include an SRI field, or if the setting for power control of the PUSCH by the SRI is not provided to the UE, the UE may use the RS resource index q having an ID of zero for the path loss reference RS d for use.

[0086] For PUSCH transmissions configured by a configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration includes a specific parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q is determined by the path loss reference index (e.g., pathlossReferenceIndex) within the specific parameter. d may be provided to the UE.

[0087] For PUSCH transmissions configured by a configured grant configuration, if the configured grant configuration does not include a specific parameter, the UE determines the RS resource index q from the value of the ID of the path loss reference RS mapped to the SRI field within the DCI format that activates the PUSCH transmission. d If the DCI format does not include an SRI field, the UE may determine the RS resource index q having an ID of zero for the path loss reference RS. d may be determined.

[0088] Δ TF,b,f,c (i) is the transmission power adjustment component (offset, transmission format compensation) for the UL BWP b of carrier f of serving cell c.

[0089] f b,f,c (i, l) is the PUSCH power control adjustment state for the active UL BWP b of carrier f of serving cell c at transmission opportunity i. f b,f,c (i, l) is δ PUSCH,b,f,c may be based on (i, l).

[0090] δ PUSCH,b,f,c(i, l) may be the TPC command value included in DCI format 0_0 or DCI format 0_1 that schedules the PUSCH transmission opportunity i on the active UL BWP b of carrier f of serving cell c, or the TPC command value encoded in combination with other TPC commands in DCI format 2_2 having a CRC scrambled by a specific RNTI (Radio Network Temporary Identifier) (e.g., TPC-PUSCH-RNTI).

[0091] Σ m=0 C(Di)-1 δ PUCCH,b,f,c (m, l) may be the sum of the TPC command values in the set D i having cardinality C(D i ). D i is the set of TPC command values received by the UE between, for the PUSCH power control adjustment state l, the K 0 of PUSCH transmission opportunity i - i PUSCH (i - i 0 ) - 1 symbols before and the K PUSCH (i) symbols before PUSCH transmission opportunity i. i 0 is the minimum positive integer such that the K 0 of PUSCH transmission opportunity i - i PUSCH (i - i 0 ) symbols before is earlier than the K PUSCH (i) symbols before PUSCH transmission opportunity i.

[0092] If PUSCH transmission is scheduled by DCI format 0_0 or DCI format 0_1, K PUSCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUSCH transmission. If PUSCH transmission is set by the configured grant configuration information (ConfiguredGrantConfig), KPUSCH (i) is the number of symbols per slot N in the active UL BWP b of carrier f of serving cell c symb slot equal to the product of N and the minimum value of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon), which may be the number of symbols PUSCH,min It may be the number of symbols

[0093] The power control adjustment state may be set to have multiple states (e.g., 2 states) or a single state by upper layer parameters. Also, when multiple power control adjustment states are set, one of the multiple power control adjustment states may be identified by the index l (e.g., l ∈ {0, 1})

[0094] In the following cases 1 to 4, P0 / α / PL-RS / closed-loop index is determined according to the rules

[0095] [Case 1] If a PUSCH transmission excluding the PUSCH retransmission corresponding to the RAR UL grant is scheduled by a DCI format that does not include the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, j = 2 and the UE follows the following operation 1 [[Operation 1]] If a P0 set for PUSCH (P0-PUSCH-Set-r16) is provided to the UE and its DCI format includes an open-loop power control parameter set indication field, the UE determines the value of P O_PUSCH,b,f,c (j) from any of the following values 1, 2, 3. Otherwise, the UE determines the value of P O_PUSCH,b,f,c (j) from the value of the first set (P0-PUSCH-AlphaSet) in the P0-Alpha set (p0-AlphaSets) If the value of the open-loop power control parameter set indication field is '0' or '00', the first set (P0-PUSCH-AlphaSet) within the P0-Alpha sets (p0-AlphaSets). If the value of the open-loop power control parameter set indication field is '1' or '01', the first value within the P0 set for PUSCH (P0-PUSCH-Set-r16) having the lowest P0 set ID for PUSCH (p0-PUSCH-SetID) value. If the value of the open-loop power control parameter set indication field is '11', the second value within the P0 set for PUSCH (P0-PUSCH-Set-r16) having the lowest P0 set ID for PUSCH (p0-PUSCH-SetID) value.

[0096] Thus, the first P0-Alpha set for PUSCH (P0-PUSCH-AlphaSet) may be applied, and the P0 set for PUSCH (P0-PUSCH-Set-r16) having the lowest P0 set ID for PUSCH (p0-PUSCH-SetID) value may be applied.

[0097] [Case 2] If the PUSCH transmission excluding the PUSCH retransmission corresponding to the RAR UL grant is scheduled by a DCI format not including the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, j = 2, and the UE determines α b,f,c (j) from the first P0-Alpha set for PUSCH within the P0-Alpha set.

[0098] [Case 3] If the UE does not configure the PUSCH Pathloss Reference RS (PUSCH-PathlossReferenceRS) and the enableDefaultBeamPL-ForSRS-r16 information element for SRS, or before the UE applies the individual upper layer parameters, the UE uses the RS resource from the same SS / PBCH block index as the SS / PBCH block index used by the UE to obtain the MIB to calculate the PL b,f,c (q d ). If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with the spatial setting for PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_0 that does not include the SRI field, or if the SRI-PUSCH Power Control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE determines the RS resource index q d using a PUSCH Pathloss Reference RS-ID (PUSCH-PathlossReferenceRS-Id) equal to zero. Here, the RS resource is on the serving cell if the serving cell c is provided, or on the serving cell indicated by the value of pathlossReferenceLinking

[0099] [Case 4] The closed-loop index l is determined from the value of j. If j > 1 and the UE is not provided with the SRI-PUSCH Power Control information element (SRI-PUSCH-PowerControl), or if j = 0, then l = 0

[0100] In this way, the first P0-Alpha set for PUSCH (P0-PUSCH-AlphaSet) may be applied, and a PUSCH Pathloss Reference RS-ID (PUSCH-PathlossReferenceRS-Id) of 0 may be applied

[0101] In the RRC information element (IE), the PUSCH configuration (PUSCH-Config) includes the PUSCH power control information element (PUSCH-PowerControl) and the PUSCH power control information element for Rel.16 (PUSCH-PowerControl-v1610). The PUSCH power control information element includes a list of P0-Alpha sets for PUSCH (p0-AlphaSets) and a list of PUSCH path loss reference RSs (PUSCH-PathlossReferenceRS). The P0-Alpha set for PUSCH includes the P0-Alpha set ID for PUSCH (P0-PUSCH-AlphaSetId), P0, and Alpha. The PUSCH path loss reference RS includes the PUSCH path loss reference RS-ID (PUSCH-PathlossReferenceRS-Id) and the reference signal (referenceSignal, SSB index, or NZP-CSI-RS resource ID).

[0102] The PUSCH power control information element for Rel.16 includes a list of P0 sets for Rel.16 PUSCH (P0-PUSCH-SetList-r16). The P0 set for Rel.16 PUSCH includes the P0 set ID for Rel.16 PUSCH (P0-PUSCH-SetId-r16) and a list of P0s for Rel.16 PUSCH (P0-PUSCH-r16).

[0103] In frequency range (FR) 1, as an extension of PUCCH for multi-TRP, supporting independent power control for different TRPs is being considered.

[0104] To support independent power control for different TRPs in FR1, when the UE is not provided with PUCCH spatial relation information, it is not clear how the UE determines at least one of the P0 for PUCCH, the PUCCH path loss reference RS, and the closed-loop index for different TRPs. Also, it is not clear which TRP the UE decides to transmit PUCCH to.

[0105] To support independent power control for different TRPs, when the PUSCH is scheduled by DCI without an SRI field, or when the UE is not provided with SRI-PUSCH null power control information elements, it is not clear how the UE determines at least one of P0 for PUSCH, the PUCCH path loss reference RS, and the closed-loop index for different TRPs. Also, it is not clear which TRP the UE decides to transmit the PUSCH to.

[0106] Therefore, the inventors conceived a method for determining the power control parameters of the UL channel.

[0107] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to the respective embodiments may be applied individually or in combination.

[0108] In the present disclosure, "A / B / C", "at least one of A, B, and C" may be read interchangeably with each other. In the present disclosure, cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, band may be read interchangeably with each other. In the present disclosure, index, ID, indicator, resource ID may be read interchangeably with each other. In the present disclosure, support, control, be able to control, operate, be able to operate may be read interchangeably with each other.

[0109] In the present disclosure, configure, activate, update, indicate, enable, specify, select may be read interchangeably with each other.

[0110] In the present disclosure, "link", "associate", "correspond", and "map" may be read interchangeably with each other. In the present disclosure, "allocate", "assign", "monitor", and "map" may be read interchangeably with each other.

[0111] In the present disclosure, the upper layer signaling may be any one of, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof. In the present disclosure, "RRC", "RRC signaling", "RRC parameter", "upper layer", "upper layer parameter", "RRC information element (IE)", and "RRC message" may be read interchangeably with each other.

[0112] The MAC signaling may use, for example, a MAC control element (MAC CE), a MAC protocol data unit (PDU), etc. The broadcast information may be, for example, a master information block (MIB), a system information block (SIB), remaining minimum system information (RMSI), other system information (OSI), etc.

[0113] In the present disclosure, "MAC CE" and "activation / deactivation command" may be read interchangeably with each other.

[0114] In the present disclosure, beam, spatial domain filter, spatial setting, TCI state, UL TCI state, unified TCI state, unified beam, common TCI state, common beam, TCI assumption, QCL assumption, QCL parameter, spatial domain receive filter, UE spatial domain receive filter, UE receive beam, DL beam, DL receive beam, DL precoding, DL precoder, DL-RS, RS of QCL type D in TCI state / QCL assumption, RS of QCL type A in TCI state / QCL assumption, spatial relationship, spatial domain transmit filter, UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, PL-RS may be read interchangeably with each other. In the present disclosure, QCL type X-RS, DL-RS associated with QCL type X, DL-RS having QCL type X, source of DL-RS, SSB, CSI-RS, SRS may be read interchangeably with each other.

[0115] In the present disclosure, panel, Uplink (UL) transmission entity, TRP, spatial relationship, Control Resource Set (CORESET), PDSCH, codeword, base station, antenna port of a signal (for example, Demodulation Reference Signal (DMRS) port), antenna port group of a signal (for example, DMRS port group), group for multiplexing (for example, Code Division Multiplexing (CDM) group, reference signal group, CORESET group), CORESET pool, CORESET subset, CW, redundancy version (RV), layer (MIMO layer, transmission layer, spatial layer) may be read interchangeably with each other. Also, panel Identifier (ID) and panel may be read interchangeably with each other. In the present disclosure, TRP index, TRP ID, CORESET pool index, ordinal numbers (first, second) of TCI states in two TCI states, TRP may be read interchangeably with each other.

[0116] In the present disclosure, one of two TCI states associated with one code point of a TRP, a transmission point, a panel, a DMRS port group, a CORESET pool, and a TCI field may be read as the other.

[0117] In the present disclosure, a single TRP, a single TRP system, a single TRP transmission, and a single PDSCH may be read as each other. In the present disclosure, a multi-TRP, a multi-TRP system, a multi-TRP transmission, and a multi-PDSCH may be read as each other. In the present disclosure, a single DCI, a single PDCCH, a multi-TRP based on a single DCI, and activation of two TCI states on at least one TCI code point may be read as each other.

[0118] In the present disclosure, a single TRP, a channel using a single TRP, a channel using one TCI state / space relation, non-activation of a multi-TRP by RRC / DCI, non-activation of a plurality of TCI states / space relations by RRC / DCI, not setting a single CORESET pool index (CORESETPoolIndex) value for any CORESET, and not mapping any code point of the TCI field to two TCI states may be read as each other.

[0119] In the present disclosure, a multi-TRP, a channel using a multi-TRP, a channel using a plurality of TCI states / space relations, activation of a multi-TRP by RRC / DCI, activation of a plurality of TCI states / space relations by RRC / DCI, and at least one of a multi-TRP based on a single DCI and a multi-TRP based on a multi-DCI may be read as each other.

[0120] In the present disclosure, multi-TRP based on multi-DCI, multi-TRP based on multi-DCI, the case where a CORESET pool index (CORESETPoolIndex) value of 1 is set for a CORESET, the case where a CORESET pool index is set for one or more CORESETs, and the case where different CORESET pool indexes = 0 or 1 are set for a CORESET may be read interchangeably with each other.

[0121] In the present disclosure, multi-TRP based on single-DCI, multi-TRP based on single-DCI, the case where at least one code point of a TCI field is mapped to two TCI states, the case where a CORESET pool index is not set for a CORESET, and the case where the same CORESET pool index is set for all CORESETs may be read interchangeably with each other.

[0122] In the present disclosure, TRP1 (first TRP) may correspond to a CORESET pool index = 0, or may correspond to a first TCI state among two TCI states corresponding to one code point of a TCI field. TRP2 (second TRP) may correspond to a CORESET pool index = 1, or may correspond to a second TCI state among two TCI states corresponding to one code point of a TCI field.

[0123] In the present disclosure, PUCCH, PUSCH, repetition, transmission occasion may be read interchangeably with each other.

[0124] (Wireless communication method) The DCI field of the TPC command for PUCCH may be extended. Two DCI fields of this TPC command may correspond to the first TRP and the second TRP.

[0125] The DCI fields for the TPC command for PUSCH / SRI for PUSCH may be extended. These two DCI fields for the TPC command / SRI may correspond to the first TRP and the second TRP.

[0126] If PUCCH spatial relation information is not provided, the UE may determine two values of the power control parameter and transmit the PUCCH using at least one of the two values of the power control parameter and one or more transmission occasions.

[0127] If the PUSCH is scheduled by downlink control information that does not include the SRI field, or if the SRI-PUSCH power control information element is not provided, the UE may determine two values of the power control parameter and transmit the PUSCH using at least one of the two values of the power control parameter and one or more transmission occasions.

[0128] The two values may be respectively associated with two indexes (for example, indexes associated with the TRP). The two indexes may be either two index values of the CORESET pool index or two index values of the TCI state associated with one code point of a field in the downlink control information.

[0129] <First Embodiment> A method by which the UE determines at least one of P0 for PUCCH, PUCCH path loss reference RS (PLRS for PUCCH), and the closed-loop index for different TRPs will be described.

[0130] If the UE is not provided with PUCCH spatial relation information, the UE may determine the power control parameter applied to PUCCH transmission to a specific TRP according to the following method. The power control parameter may be at least one of P0 for PUCCH, PLRS for PUCCH, and the closed-loop index.

[0131] "Aspect 1-1": P0 for PUCCH If the UE is not provided with PUCCH spatial relation information, the UE may follow any one of the following Aspects 1-1-1 to 1-1-4 for P0 for PUCCH.

[0132] [Aspect 1-1-1] Two P0 sets are respectively configured for two TRPs. For PUCCH transmission to each TRP, the UE applies the P0 for PUCCH with the minimum ID within the corresponding P0 set.

[0133] FIG. 1A is a diagram showing an example of the configuration of P0 for PUCCH according to Aspect 1-1-1.

[0134] In this example, a P0 set for TRP1 (P0-Set-TRP1) and a P0 set for TRP2 (P0-Set-TRP2) are configured. The P0 set for TRP1 includes the P0 for PUCCH with ID (P0-PUCCH-ID) = 0 and the P0 for PUCCH with ID = 1. The P0 set for TRP2 includes the P0 for PUCCH with ID = 2 and the P0 for PUCCH with ID = 3. Among the P0 set for TRP1, the P0 for PUCCH with the minimum ID (0) is applied to PUCCH transmission to TRP1. Among the P0 set for TRP2, the P0 for PUCCH with the minimum ID (2) is applied to PUCCH transmission to TRP2.

[0135] [Aspect 1-1-2] One P0 set is configured. From that P0 set, two P0s for PUCCH for two TRPs are respectively determined based on rules. For example, for PUCCH transmission to the first TRP, the UE applies the P0 for PUCCH with the minimum ID (e.g., 0), and for PUCCH transmission to the second TRP, the UE applies the P0 for PUCCH with the second minimum ID (e.g., 1).

[0136] FIG. 1B is a diagram showing an example of the configuration of P0 for PUCCH according to Aspect 1-1-2.

[0137] In this example, one P0 set (P0-Set) is configured. This P0 set includes the P0 for PUCCH with ID = 0, the P0 for PUCCH with ID = 1, the P0 for PUCCH with ID = 2, and the P0 for PUCCH with ID = 3. Among the P0 set, the P0 for PUCCH with the smallest ID (0) is applied to the PUCCH transmission to TRP1. Among the P0 set, the P0 for PUCCH with the second smallest ID (1) is applied to the PUCCH transmission to TRP2.

[0138] [Aspect 1-1-3] One P0 set is configured. From this P0 set, two subsets of P0 for PUCCH are explicitly / implicitly configured for two TRPs respectively. For example, the first K P0s for PUCCH (the first subset) are configured for the first TRP, and the P0s for PUCCH from the (K + 1)-th to the maximum number are configured for the second TRP (the second subset). The UE applies the P0 for PUCCH with the smallest ID within the corresponding subset to the PUCCH transmission to each TRP.

[0139] K may be configured, may be specified in the specification, or may depend on the UE capabilities.

[0140] FIG. 1C is a diagram showing an example of the configuration of P0 for PUCCH according to Aspect 1-1-3.

[0141] In this example, one P0 set is configured. This P0 set includes a subset for TRP1 (Sub-set-TRP1) and a subset for TRP2 (Sub-set-TRP2). The subset for TRP1 includes the P0 for PUCCH with ID = 0 and the P0 for PUCCH with ID = 1. The subset for TRP2 includes the P0 for PUCCH with ID = 2 and the P0 for PUCCH with ID = 3. Among the subset for TRP1, the P0 for PUCCH with the smallest ID (0) is applied to the PUCCH transmission to TRP1. Among the subset for TRP2, the P0 for PUCCH with the smallest ID (2, K) is applied to the PUCCH transmission to TRP2.

[0142] [Aspect 1-1-4] Two values of P0 for PUCCH used in the multi-TRP case are explicitly set for two TRPs respectively. The UE applies the corresponding (set) P0 for PUCCH for PUCCH transmission to each TRP.

[0143] Whether the UE transmits PUCCH to either TRP1 (the first TRP) or TRP2 (the second TRP) may follow the second embodiment.

[0144] 《Aspect 1-2》PLRS for PUCCH If the UE is not provided with PUCCH spatial relation information, the UE may follow any one of the following Aspects 1-2-1 to 1-2-4 for PLRS for PUCCH.

[0145] [Aspect 1-2-1] Two sets of PLRS for PUCCH are set for two TRPs respectively. The UE applies the PLRS with the minimum ID (for example, 0) within the corresponding set for PUCCH transmission to each TRP.

[0146] FIG. 2A is a diagram showing an example of the setting of PLRS for PUCCH according to Aspect 1-2-1.

[0147] In this example, a PLRS set for TRP1 (pathlossRS-TRP1) and a P0 set for TRP2 (pathlossRS-TRP2) are set. The PLRS set for TRP1 includes a PLRS for PUCCH with ID = 0 and a PLRS for PUCCH with ID = 1. The PLRS set for TRP2 includes a PLRS for PUCCH with ID = 2 and a PLRS for PUCCH with ID = 3. Among the PLRS sets for TRP1, the PLRS for PUCCH with the minimum ID (0) is applied to PUCCH transmission to TRP1. Among the PLRS sets for TRP2, the PLRS for PUCCH with the minimum ID (2) is applied to PUCCH transmission to TRP2.

[0148] [Aspect 1-2-2] One set of PUCCH PLRS is configured. From that set, two PUCCH PLRS for two TRPs are respectively determined based on rules. For example, for PUCCH transmission to the first TRP, the UE applies the PUCCH PLRS with the minimum ID (e.g., 0), and for PUCCH transmission to the second TRP, the UE applies the PUCCH PLRS with the second minimum ID (e.g., 1).

[0149] FIG. 2B is a diagram showing an example of the configuration of PUCCH PLRS according to Aspect 1-2-2.

[0150] In this example, one set of PUCCH PLRS (pattlossRS) is configured. This set includes the PUCCH PLRS with ID = 0, the PUCCH PLRS with ID = 1, the PUCCH PLRS with ID = 2, and the PUCCH PLRS with ID = 3. Among that set, the PUCCH PLRS with the minimum ID (0) is applied to PUCCH transmission to TRP1. Among that set, the PUCCH PLRS with the second smallest ID (1) is applied to PUCCH transmission to TRP2.

[0151] [Aspect 1-2-3] One set of PUCCH PLRS is configured. From that set, for two TRPs, two subsets of PUCCH PLRS are respectively configured explicitly / implicitly. For example, for the first TRP, the first K PUCCH PLRS (the first subset) are configured, and for the second TRP, the PUCCH PLRS from the (K + 1)-th to the maximum number (the second subset) are configured. The UE applies the PUCCH PLRS with the minimum ID within the corresponding subset to PUCCH transmission to each TRP.

[0152] K may be configured, may be specified in the specification, or may depend on the UE capabilities.

[0153] FIG. 2C is a diagram showing an example of the setting of the PLRS for PUCCH according to Aspect 1-2-3.

[0154] In this example, one set (pathlossRS) of the PLRS for PUCCH is set. This set includes a subset for TRP1 (Sub-set-TRP1) and a subset for TRP2 (Sub-set-TRP2). The subset for TRP1 includes the PLRS for PUCCH with ID = 0 and the PLRS for PUCCH with ID = 1. The subset for TRP2 includes the PLRS for PUCCH with ID = 2 and the PLRS for PUCCH with ID = 3. Among the subsets for TRP1, the PLRS for PUCCH having the minimum ID (0) is applied to the PUCCH transmission to TRP1. Among the subsets for TRP2, the PLRS for PUCCH having the minimum ID (2, K) is applied to the PUCCH transmission to TRP2.

[0155] [Aspect 1-2-4] Two PLRSs for PUCCH used in the multi-TRP case are explicitly set for the two TRPs respectively. The UE applies the corresponding (set) PLRS for PUCCH to the PUCCH transmission to each TRP.

[0156] Whether the UE transmits PUCCH to either TRP1 (the first TRP) or TRP2 (the second TRP) may be in accordance with the second embodiment.

[0157] 《Aspect 1-3》Closed-loop Index for PUCCH If the UE is not provided with PUCCH spatial relation information, the UE may follow any one of Aspects 1-3-1 to 1-3-3 for the closed-loop index l for PUCCH.

[0158] [Aspect 1-3-1] If the UE is not provided with PUCCH spatial relation information, the UE may apply l = 0 to the PUCCH transmission to the first TRP and apply l = 1 to the PUCCH transmission to the second TRP.

[0159] [Aspect 1-3-2] The candidate values of the closed-loop index for the multi-TRP case may be extended to l = {0_0, 0_1, 1_0, 1_1}. Here, {0_0, 0_1} may be candidate values for the first TRP. {1_0, 1_1} may be candidate values for the second TRP. If the UE is not provided with PUCCH spatial relation information, the UE may apply l = 0_0 for PUCCH transmission to the first TRP and l = 1_0 for PUCCH transmission to the second TRP.

[0160] [Aspect 1-3-3] Closed-loop power control adjustment state g b,f,c (i, l) is g b,f,c It may be extended to (i, l, x). TPC command value δ PUCCH,b,f,c (m, l) is δ PUCCH,b,f,c It may be extended to (m, l, x). Here, x may represent the TRP index. If the UE is not provided with PUCCH spatial relation information, the UE may apply l = 0 and x = 0 for PUCCH transmission to the first TRP and l = 0 and x = 1 for PUCCH transmission to the second TRP.

[0161] According to this embodiment, the UE can apply appropriate power control parameters for PUCCH transmission to a specific TRP.

[0162] <The Second Embodiment> A method for the UE to determine to which TRP to transmit the PUCCH will be described.

[0163] For PUCCH transmission to one TRP based on the second embodiment, the UE may apply at least one of P0 for PUCCH, the PUCCH path loss reference RS, and the closed-loop index for that TRP, which are determined based on the first embodiment.

[0164] 《Aspect 2-1》PUCCH transmission without repetition For non-repetitive PUCCH transmission, the UE may determine the association between the PUCCH transmission and the TRP according to any one of the following aspects 2-1-1 to 2-1-6.

[0165] [Aspect 2-1-1] The association is determined from the CORESET pool index of the CORESET in which the UE detects DCI for dynamic PUCCH resource selection (PUCCH resource indication). The DCI may be, for example, DCI format 1_0 / 1_1 / 1_2.

[0166] This aspect may be applied only to multi-TRPs based on multi-DCI.

[0167] [Aspect 2-1-2] For each PUCCH resource / each PUCCH resource set / each PUCCH resource group / each PUCCH format, the TRP index / CORESET pool index is explicitly set.

[0168] [Aspect 2-1-3] Together with the PUCCH resource ID for the PUCCH resource set to be set periodically / semi-persistently, the TRP index / CORESET pool index is explicitly set. Here, the PUCCH resource set to be set periodically / semi-persistently may be a PUCCH resource for CSI reporting (PUCCH-CSI-Resource) or an SR resource.

[0169] [Aspect 2-1-4] In the DL scheduling DCI for dynamic PUCCH resource selection (PUCCH resource indication), the TRP index / CORESET pool index is explicitly indicated. The DCI may be, for example, DCI format 1_0 / 1_1 / 1_2.

[0170] [Aspect 2-1-5] The association is implicitly set by grouping of PUCCH resources / PUCCH resource sets. The PUCCH resources / PUCCH resource sets within the first group may be used for PUCCH transmission to the first TRP. The PUCCH resources / PUCCH resource sets within the second group may be used for PUCCH transmission to the second TRP.

[0171] [Aspect 2-1-6] The TRP index / CORESET pool index is set by RRC and activated by MAC CE, and is applied until RRC reconfiguration or reception of a new MAC CE.

[0172] Any of Aspect 2-1-2 to 2-1-6 may be applied to both multi-TRP based on single DCI and multi-TRP based on multi-DCI.

[0173] For TRP index / CORESET pool index = 0, the UE may apply the P0 / PLRS / closed-loop index for the first TRP in the first embodiment. For TRP index / CORESET pool index = 1, the UE may apply the P0 / PLRS / closed-loop index for the second TRP in the first embodiment.

[0174] [Aspect 2-2] PUCCH Repetition Regarding PUCCH repetition, whether a plurality of repetitions are associated with a single TRP or a multi-TRP may follow any of the following Aspect 2-2-1 to 2-2-5.

[0175] [Aspect 2-2-1] Whether a plurality of repetitions are associated with a single TRP or a multi-TRP is explicitly set for each PUCCH resource / each PUCCH resource set / each PUCCH resource group / each PUCCH format.

[0176] [Aspect 2-2-2] Whether multiple repetitions are associated with a single TRP or with multiple TRPs is explicitly set together with the PUCCH resource ID for the PUCCH resource configured periodically / semi-persistently. Here, the PUCCH resource configured periodically / semi-persistently may be a PUCCH resource for CSI reporting (PUCCH-CSI-Resource) or an SR resource.

[0177] [Aspect 2-2-3] Whether multiple repetitions are associated with a single TRP or with multiple TRPs is implicitly set by the grouping of the PUCCH resource / PUCCH resource set. The PUCCH resource / PUCCH resource set within the first group may be used for PUCCH transmission to a single TRP. The PUCCH resource / PUCCH resource set within the second group may be used for PUCCH transmission to multiple TRPs.

[0178] [Aspect 2-2-4] Whether multiple repetitions are associated with a single TRP or with multiple TRPs is explicitly indicated within DCI for dynamic PUCCH resource selection (PUCCH resource indication). The DCI may be, for example, DCI format 1_0 / 1_1 / 1_2.

[0179] [Aspect 2-2-5] Whether multiple repetitions are associated with a single TRP or with multiple TRPs is set by RRC and activated by MAC CE, and is applied until RRC reconfiguration or reception of a new MAC CE.

[0180] Any one of Aspects 2-2-1 to 2-2-5 may be applied to both multi-TRP based on a single DCI and multi-TRP based on multiple DCIs.

[0181] When all of a plurality of PUCCH repetitions are associated with a single TRP based on any one of Aspects 2-2-1 to 2-2-5, the method similar to that of Aspect 2-1 may be used to determine with which TRP all of the plurality of PUCCH repetitions are associated.

[0182] In the example of FIG. 3A, PUCCH repetitions #1 to #4 are associated with TRP1 (single TRP). In the example of FIG. 3B, PUCCH repetitions #1 to #4 are associated with TRP2 (single TRP). In the example of FIG. 3C, PUCCH repetitions #1 and #3 are associated with TRP1, and PUCCH repetitions #2 and #4 are associated with TRP2. For PUCCH repetitions with respect to TRP1 and 2 (multi-TRP), they may be associated by the cyclic mapping described later.

[0183] If a plurality of PUCCH repetitions are associated with multi-TRP, the mapping between the PUCCH repetitions and the TRP may follow any one of the following Mappings 1 to 3.

[0184] [Mapping 1] Cyclic mapping Cyclic mapping pattern: The first and second beams (TRPs) are applied to the first and second PUCCH repetitions, respectively. The same beam mapping pattern continues to the remaining PUCCH repetitions.

[0185] FIG. 4A shows an example of Mapping 1. In this example, the number of PUCCH repetitions is 4. PUCCH repetitions #1 and #3 are associated with TRP1, and PUCCH repetitions #2 and #4 are associated with TRP2.

[0186] [Mapping 2] Sequential mapping Sequential mapping pattern: The first beam (TRP) is applied to the first and second PUCCH repetitions. The second beam is applied to the third and fourth PUCCH repetitions. The same beam mapping pattern continues to the remaining PUCCH repetitions.

[0187] Figure 4B shows an example of Mapping 2. In this example, the PUCCH repetition number is 8. PUCCH repetitions #1 and #2 are associated with TRP1, and PUCCH repetitions #3 and #4 are associated with TRP2. This mapping pattern is repeated for PUCCH repetitions #5 to #8.

[0188] [Mapping 3] Equal (half - half) mapping Among multiple PUCCH repetitions, the first - half PUCCH repetitions are mapped to the first TRP (beam). Among multiple PUCCH repetitions, the second - half PUCCH repetitions are mapped to the second TRP.

[0189] Figure 4C shows an example of Mapping 3. In this example, the PUCCH repetition number is 8. PUCCH repetitions #1 to #4 are associated with TRP1, and PUCCH repetitions #5 to #8 are associated with TRP2.

[0190] One or more of these mapping patterns are supported, and one mapping pattern may be set by RRC.

[0191] According to this embodiment, the UE can transmit PUCCH transmissions to the appropriate TRP (using the appropriate beam).

[0192] <The Third Embodiment> UE capabilities corresponding to at least one function (feature) in the first to second embodiments may be defined. When the UE reports this UE capability, the UE may perform the corresponding function. When the UE reports this UE capability and the upper - layer parameters corresponding to this function are set, the UE may perform the corresponding function. Upper - layer parameters (RRC information elements) corresponding to this function may be defined. When this upper - layer parameter is set, the UE may perform the corresponding function.

[0193] The UE capability may indicate whether the UE supports this function.

[0194] The UE capability may be that when the UE is not provided with PUCCH spatial relation information, for non-repeated PUCCH transmission, the UE supports different P0 / PLRS / closed-loop indexes for PUCCH transmissions to different multiple TRPs.

[0195] The UE capability may be that when the UE is not provided with PUCCH spatial relation information, for PUCCH repetition, the UE supports different P0 / PLRS / closed-loop indexes for PUCCH repetitions of different PUCCHs to different multiple TRPs. For PUCCH repetitions of the same PUCCH, the UE may apply the same power control parameters. For example, the UE may support the examples in FIG. 3A and FIG. 3B and may not support the example in FIG. 3C.

[0196] The UE capability may be that when the UE is not provided with PUCCH spatial relation information, for PUCCH repetition, the UE supports different P0 / PLRS / closed-loop indexes for PUCCH repetitions of the same PUCCH to different multiple TRPs. For example, the UE may support the example in FIG. 3C.

[0197] The UE capability may be that when the UE is not provided with PUCCH spatial relation information, the UE supports different P0 / PLRS / closed-loop indexes for different multiple TRPs in at least one of the case of multi-TRP based on single DCI and the case of multi-TRP based on multi-DCI.

[0198] According to this embodiment, the UE can implement the above functions while maintaining compatibility with the existing specifications.

[0199] <The Fourth Embodiment> A method for a UE to determine at least one of P0 for PUSCH, alpha, P0 for Rel.16 PUSCH, PUSCH path loss reference RS (PLRS for PUSCH), and a closed-loop index for different TRPs will be described.

[0200] When PUSCH transmission is scheduled by a DCI format that does not include an SRI field, or if SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE may determine the power control parameters applied to PUSCH transmission to a specific TRP according to the following method. The power control parameters may be at least one of P0 for PUSCH, alpha, P0 for Rel.16 PUSCH, PLRS for PUSCH, and a closed-loop index.

[0201] 《Aspect 4-1》P0 / alpha for PUSCH If the P0 set for PUSCH (P0-PUSCH-Set-r16) is not provided to the UE and PUSCH transmission is scheduled by a DCI format that does not include an SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE (the same conditions as in Case 2 above), the UE may follow any of the following Aspects 4-1-1 to 4-1-4 for P0 / alpha for PUSCH.

[0202] [Aspect 4-1-1] Two P0-Alpha multiple sets (p0-AlphaSets) are set for two TRPs respectively. For PUSCH transmission to each TRP, the UE applies the P0 and alpha within the first (having the smallest ID) P0-Alpha set for PUSCH (P0-PUSCH-AlphaSet) within the corresponding P0-Alpha multiple set.

[0203] FIG. 5A is a diagram showing an example of the setting of P0 / alpha for PUSCH according to Aspect 4-1-1.

[0204] In this example, multiple sets of P0-Alpha for TRP1 (p0-AlphaSets-TRP1) and multiple sets of P0-Alpha for TRP2 (p0-AlphaSets-TRP2) are configured. The multiple sets of P0-Alpha for TRP1 include a P0-Alpha set for PUSCH with ID(P0-PUSCH-AlphaSetId-r16)=0 and a P0-Alpha set for PUSCH with ID = 1. The multiple sets of P0-Alpha for TRP2 include a P0-Alpha set for PUSCH with ID = 2 and a P0-Alpha set for PUSCH with ID = 3. Among the multiple sets of P0-Alpha for TRP1, the first P0-Alpha set for PUSCH is applied to PUSCH transmission to TRP1. Among the multiple sets of P0-Alpha for TRP2, the first P0-Alpha set for PUSCH is applied to PUSCH transmission to TRP2.

[0205] [Aspect 4-1-2] One set of multiple P0-Alpha (p0-AlphaSets) is configured. From that set of multiple P0-Alpha, two values of P0 and alpha for PUSCH (two P0-Alpha sets for PUSCH (P0-PUSCH-AlphaSet)) are determined for two TRPs based on rules. For example, the UE applies the first (with the smallest ID) P0-Alpha set for PUSCH to PUSCH transmission to the first TRP and the second (with the second smallest ID) P0-Alpha set for PUSCH to PUSCH transmission to the second TRP.

[0206] FIG. 5B is a diagram showing an example of the configuration of P0 / alpha for PUSCH according to Aspect 4-1-2.

[0207] In this example, a plurality of P0-Alpha sets (p0-AlphaSets) are configured. The plurality of P0-Alpha sets include a P0-Alpha set for PUSCH with ID = 0, a P0-Alpha set for PUSCH with ID = 1, a P0-Alpha set for PUSCH with ID = 2, and a P0-Alpha set for PUSCH with ID = 3. Among the plurality of P0-Alpha sets, the first P0-Alpha set for PUSCH is applied to the PUSCH transmission to TRP1. Among the plurality of P0-Alpha sets, the second P0-Alpha set for PUSCH is applied to the PUSCH transmission to TRP2.

[0208] [Aspect 4-1-3] A plurality of P0-Alpha sets (p0-AlphaSets) are configured. From the P0 sets, two subsets of the P0-Alpha sets for PUSCH (P0-PUSCH-AlphaSet) are explicitly / implicitly configured for two TRPs respectively. For example, the first K P0-Alpha sets for PUSCH (the first subset) are configured for the first TRP, and the P0-Alpha sets for PUSCH from the (K + 1)-th to the maximum number (the second subset) are configured for the second TRP. The UE applies the first (with the smallest ID) P0-Alpha set for PUSCH within the corresponding subset to the PUSCH transmission to each TRP.

[0209] K may be configured, may be specified in the specification, or may depend on the UE capabilities.

[0210] FIG. 5C is a diagram showing an example of the configuration of P0 / alpha for PUSCH according to Aspect 4-1-3.

[0211] In this example, a plurality of sets of P0-Alpha (p0-AlphaSets) are configured. This plurality of sets of P0-Alpha includes a subset for TRP1 (Sub-set-TRP1) and a subset for TRP2 (Sub-set-TRP2). The subset for TRP1 includes a P0-Alpha set for PUSCH with ID = 0 and a P0-Alpha set for PUSCH with ID = 1. The subset for TRP2 includes a P0-Alpha set for PUSCH with ID = 2 and a P0-Alpha set for PUSCH with ID = 3. Among the subsets for TRP1, the first P0-Alpha set for PUSCH is applied to PUSCH transmissions to TRP1. Among the subsets for TRP2, the first P0-Alpha set for PUSCH is applied to PUSCH transmissions to TRP2.

[0212] [Aspect 4-1-4] Two values of P0 and alpha for PUSCH used in the multi-TRP case are explicitly configured for two TRPs respectively. The UE applies the corresponding (configured) P0 and alpha for PUSCH to PUSCH transmissions to each TRP.

[0213] Whether the UE transmits PUSCH to either TRP1 (the first TRP) or TRP2 (the second TRP) may follow the fifth embodiment.

[0214] 《Aspect 4-2》P0 for PUSCH If the P0 set for Rel.16 PUSCH (P0-PUSCH-Set-r16, the P0 set for PUSCH for open-loop power control) is provided to the UE and the PUSCH transmission is scheduled by a DCI format that includes an open-loop power control parameter set indication field, and that DCI format does not include an SRI field, or the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE (the same conditions as in Case 1 above), the UE may follow any of the following Aspects 4-2-1 to 4-2-4 for P0 for PUSCH.

[0215] [Aspect 4-2-1] Two sets (lists, P0-PUSCH-SetList-r16) of Rel.16 PUSCH P0 sets (P0-PUSCH-Set-r16) are set for two TRPs respectively. For PUSCH transmission to each TRP, the UE applies the first (with the smallest ID) Rel.16 PUSCH P0 set in the corresponding list.

[0216] FIG. 6A is a diagram showing an example of the setting of P0 for PUSCH according to Aspect 4-2-1.

[0217] In this example, a PUSCH P0 set list for TRP1 (p0-PUSCH-SetList-TRP1) and a PUSCH P0 set list for TRP2 (p0-PUSCH-SetList-TRP2) are set. The PUSCH P0 set list for TRP1 includes a PUSCH P0 set with ID (P0-PUSCH-SetId)=0 and a PUSCH P0 set with ID=1. The PUSCH P0 set list for TRP2 includes a PUSCH P0 set with ID=2 and a PUSCH P0 set with ID=3. Among the PUSCH P0 set list for TRP1, the first PUSCH P0 set is applied to PUSCH transmission to TRP1. Among the PUSCH P0 set list for TRP2, the first PUSCH P0 set is applied to PUSCH transmission to TRP2.

[0218] [Aspect 4-2-2] One set (list, P0-PUSCH-SetList-r16) of Rel.16 PUSCH P0 sets (P0-PUSCH-Set-r16) is set. From that list, two Rel.16 PUSCH P0 sets are determined for two TRPs respectively based on rules. For example, for PUSCH transmission to the first TRP, the UE applies the first (with the smallest ID) Rel.16 PUSCH P0 set, and for PUSCH transmission to the second TRP, the UE applies the second (with the second smallest ID) Rel.16 PUSCH P0 set.

[0219] FIG. 6B is a diagram showing an example of the setting of P0 for PUSCH according to Embodiment 4-2-2.

[0220] In this example, one P0 set list for PUSCH (p0-PUSCH-SetList) is set. This P0 set list for PUSCH includes a P0 set for PUSCH with ID = 0, a P0 set for PUSCH with ID = 1, a P0 set for PUSCH with ID = 2, and a P0 set for PUSCH with ID = 3. Among the P0 set list for PUSCH, the first P0 set for PUSCH is applied to the PUSCH transmission to TRP1. Among the P0 set list for PUSCH, the second P0 set for PUSCH is applied to the PUSCH transmission to TRP2.

[0221] [Embodiment 4-2-3] One set (list, P0-PUSCH-SetList-r16) of P0 sets for Rel.16 PUSCH (P0-PUSCH-Set-r16) is set. From that list, for two TRPs, two subsets of the P0 sets for Rel.16 PUSCH are explicitly / implicitly set respectively. For example, the first K P0 sets for Rel.16 PUSCH (the first subset) are set for the first TRP, and the P0 sets for Rel.16 PUSCH from the (K + 1)-th to the maximum number are set for the second TRP (the second subset). The UE applies the first (the one with the minimum ID) P0 set for Rel.16 PUSCH within the corresponding subset to the PUSCH transmission to each TRP.

[0222] K may be set, may be specified in the specification, or may depend on the UE capability.

[0223] FIG. 6C is a diagram showing an example of the setting of P0 for PUSCH according to Embodiment 4-2-3.

[0224] In this example, one P0 set list for PUSCH (p0-PUSCH-SetList) is configured. This P0 set list for PUSCH includes a subset for TRP1 (Sub-set-TRP1) and a subset for TRP2 (Sub-set-TRP2). The subset for TRP1 includes a P0 set for PUSCH with ID = 0 and a P0 set for PUSCH with ID = 1. The subset for TRP2 includes a P0 set for PUSCH with ID = 2 and a P0 set for PUSCH with ID = 3. Among the subsets for TRP1, the first P0 set for PUSCH is applied to PUSCH transmission to TRP1. Among the subsets for TRP2, the first P0 set for PUSCH is applied to PUSCH transmission to TRP2.

[0225] [Aspect 4-2-4] Two P0 sets for Rel.16 PUSCH (P0-PUSCH-Set-r16) used in the multi-TRP case are explicitly configured for the two TRPs respectively. The UE applies the corresponding (configured) Rel.16 P0 set for PUSCH to PUSCH transmission to each TRP.

[0226] Whether the UE transmits PUSCH to either TRP1 (the first TRP) or TRP2 (the second TRP) may follow the fifth embodiment.

[0227] 《Aspect 4-3》PLRS for PUSCH If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with a spatial setting for PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_0 that does not include an SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE (the same conditions as in Case 3 above), the UE may follow any of the following Aspects 4-3-1 to 4-3-4 for the PLRS for PUSCH.

[0228] [Aspect 4-3-1] Two sets of PUSCH PLRS are respectively configured for two TRPs. For PUSCH transmission to each TRP, the UE applies the PLRS with the minimum ID (e.g., 0) within the corresponding set.

[0229] FIG. 7A is a diagram showing an example of the configuration of PUSCH PLRS according to Embodiment 4-3-1.

[0230] In this example, a PLRS set for TRP1 (pathlossRS-TRP1) and a P0 set for TRP2 (pathlossRS-TRP2) are configured. The PLRS set for TRP1 includes a PUSCH PLRS with ID (PUSCH-PLRS-ID)=0 and a PUSCH PLRS with ID=1. The PLRS set for TRP2 includes a PUSCH PLRS with ID=2 and a PUSCH PLRS with ID=3. Among the PLRS sets for TRP1, the PUSCH PLRS with the minimum ID (0) is applied to PUSCH transmission to TRP1. Among the PLRS sets for TRP2, the PUSCH PLRS with the minimum ID (2) is applied to PUSCH transmission to TRP2.

[0231] [Embodiment 4-3-2] One set of PUSCH PLRS is configured. From that set, two values of PUSCH PLRS for two TRPs are respectively determined based on rules. For example, for PUSCH transmission to the first TRP, the UE applies the PUSCH PLRS with the minimum ID (e.g., 0), and for PUSCH transmission to the second TRP, the UE applies the PUSCH PLRS with the second minimum ID (e.g., 1).

[0232] FIG. 7B is a diagram showing an example of the configuration of PUSCH PLRS according to Embodiment 4-3-2.

[0233] In this example, one set of PUSCH PLRS (pattlossRS) is configured. This set includes the PUSCH PLRS with ID = 0, the PUSCH PLRS with ID = 1, the PUSCH PLRS with ID = 2, and the PUSCH PLRS with ID = 3. Among that set, the PUSCH PLRS with the minimum ID (0) is applied to PUSCH transmissions to TRP1. Among that set, the PUSCH PLRS with the second smallest ID (1) is applied to PUSCH transmissions to TRP2.

[0234] [Aspect 4-3-3] One set of PUSCH PLRS is configured. From that set, for two TRPs, two subsets of PUSCH PLRS are explicitly / implicitly configured respectively. For example, the first K PUSCH PLRS (the first subset) are configured for the first TRP, and the PUSCH PLRS from the (K + 1)-th to the maximum number are configured for the second TRP (the second subset). The UE applies the PUSCH PLRS with the minimum ID within the corresponding subset for PUSCH transmissions to each TRP.

[0235] K may be configured, may be specified in the specification, or may depend on the UE capabilities.

[0236] FIG. 7C is a diagram showing an example of the configuration of PUSCH PLRS according to Aspect 4-3-3.

[0237] In this example, one set of pathlossRS for PUSCH is configured. This set includes a sub-set for TRP1 (Sub-set-TRP1) and a sub-set for TRP2 (Sub-set-TRP2). The sub-set for TRP1 includes the pathlossRS for PUSCH with ID = 0 and the pathlossRS for PUSCH with ID = 1. The sub-set for TRP2 includes the pathlossRS for PUSCH with ID = 2 and the pathlossRS for PUSCH with ID = 3. Among the sub-set for TRP1, the pathlossRS for PUSCH with the minimum ID (0) is applied to the PUSCH transmission to TRP1. Among the sub-set for TRP2, the pathlossRS for PUSCH with the minimum ID (2, K) is applied to the PUSCH transmission to TRP2.

[0238] [Aspect 4-3-4] Two pathlossRS for PUSCH used in the multi-TRP case are explicitly configured for the two TRPs respectively. The UE applies the corresponding (configured) pathlossRS for PUSCH to the PUSCH transmission to each TRP.

[0239] Whether the UE transmits PUSCH to either TRP1 (the first TRP) or TRP2 (the second TRP) may follow the fifth embodiment.

[0240] 《Aspect 4-4》Closed-loop index for PUSCH If the PUSCH transmission is scheduled by a DCI format that does not include the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE may follow any one of the following Aspects 4-4-1 to 4-4-3 for the closed-loop index l for PUSCH.

[0241] [Aspect 4-4-1] If the PUSCH transmission is scheduled by a DCI format that does not include the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE may apply l = 0 to the PUSCH transmission to the first TRP and apply l = 1 to the PUSCH transmission to the second TRP.

[0242] [Aspect 4-4-2] The candidate values of the closed-loop index for the multi-TRP case may be extended to l = {0_0, 0_1, 1_0, 1_1}. Here, {0_0, 0_1} may be candidate values for the first TRP. {1_0, 1_1} may be candidate values for the second TRP. If the PUSCH transmission is scheduled by a DCI format that does not include the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE may apply l = 0_0 to the PUSCH transmission to the first TRP and apply l = 1_0 to the PUSCH transmission to the second TRP.

[0243] [Aspect 4-4-3] Closed-loop power control adjustment state f b,f,c (i, l) is f b,f,c It may be extended to (i, l, x). TPC command value δ PUSCH,b,f,c (m, l) is δ PUSCH,b,f,c It may be extended to (m, l, x). Here, x may represent the TRP index. If the PUSCH transmission is scheduled by a DCI format that does not include the SRI field, or if the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl) is not provided to the UE, the UE may apply l = 0 and x = 0 to the PUSCH transmission to the first TRP and apply l = 0 and x = 1 to the PUSCH transmission to the second TRP.

[0244] According to this embodiment, the UE can apply appropriate power control parameters to the PUSCH transmission to a specific TRP.

[0245] <Fifth Embodiment> A method for a UE to determine to which TRP to transmit a PUSCH will be described.

[0246] For PUSCH transmission to one TRP based on the fifth embodiment, the UE may apply at least one of P0 for PUSCH, alpha, PUSCH path loss reference RS, and closed-loop index for that TRP, which are determined based on the fourth embodiment.

[0247] <Aspect 5-1> PUSCH Transmission Without Repetition For PUSCH transmission without repetition, the UE may determine the association between PUSCH transmission and the TRP according to any one of Aspects 5-1-1 to 5-1-3 below.

[0248] [Aspect 5-1-1] The association is determined from the CORESET pool index of the CORESET in which the UE detects the UL scheduling DCI. The UL scheduling DCI may be, for example, DCI format 0_0 / 0_1 / 0_2.

[0249] This aspect may be applied only to multi-TRPs based on multi-DCI.

[0250] [Aspect 5-1-2] The TRP index / CORESET pool index is explicitly set by the UL scheduling DCI. The UL scheduling DCI may be, for example, DCI format 0_0 / 0_1 / 0_2.

[0251] [Aspect 5-1-3] The TRP index / CORESET pool index is semi-statically set by the RRC and activated by the MAC CE, and is applied until RRC reconfiguration or reception of a new MAC CE.

[0252] Any one of Aspects 5-1-2 to 5-1-3 may be applied to both multi-TRP based on single DCI and multi-TRP based on multi-DCI.

[0253] For TRP index / CORESET pool index = 0, the UE may apply the P0 / alpha / PLRS / closed-loop index for the first TRP in the fourth embodiment. For TRP index / CORESET pool index = 1, the UE may apply the P0 / alpha / PLRS / closed-loop index for the second TRP in the fourth embodiment.

[0254] 《Aspect 5-2》PUSCH Repetition Regarding PUSCH repetition, whether a plurality of repetitions are associated with a single TRP or a multi-TRP may follow any one of the following Aspects 5-2-1 to 5-2-2.

[0255] [Aspect 5-2-1] Whether a plurality of repetitions are associated with a single TRP or a multi-TRP is explicitly set in the UL scheduling DCI.

[0256] [Aspect 5-2-2] Whether a plurality of repetitions are associated with a single TRP or a multi-TRP is set by RRC / activated by MAC CE and applied until RRC reconfiguration or reception of a new MAC CE.

[0257] Any one of Aspects 5-2-1 to 5-2-2 may be applied to both multi-TRP based on single DCI and multi-TRP based on multi-DCI.

[0258] When all of the multiple PUSCH repetitions are associated with a single TRP based on any one of Aspects 5-2-1 to 5-2-2, it may be determined which TRP all of the multiple PUSCH repetitions are associated with using the same method as in Aspect 5-1.

[0259] In the example of FIG. 8A, PUSCH repetitions #1 to #4 are associated with TRP1 (single TRP). In the example of FIG. 8B, PUSCH repetitions #1 to #4 are associated with TRP2 (single TRP). In the example of FIG. 8C, PUSCH repetitions #1, #3 are associated with TRP1, and PUSCH repetitions #2, #4 are associated with TRP2. For PUSCH repetitions with respect to TRP1 and 2 (multi-TRP), they may be associated by the cyclic mapping described below.

[0260] If multiple PUSCH repetitions are associated with multi-TRP, the mapping between the PUSCH repetitions and the TRP may follow any one of the following Mappings 1 to 3.

[0261] [Mapping 1] Cyclic mapping Cyclic mapping pattern: The first and second beams (TRPs) are applied to the first and second PUSCH repetitions, respectively. The same beam mapping pattern continues to the remaining PUSCH repetitions.

[0262] FIG. 9A shows an example of Mapping 1. In this example, the number of PUSCH repetitions is 4. PUSCH repetitions #1, #3 are associated with TRP1, and PUSCH repetitions #2, #4 are associated with TRP2.

[0263] [Mapping 2] Sequential mapping Sequential mapping pattern: The first beam (TRP) is applied to the first and second PUSCH repetitions. The second beam is applied to the third and fourth PUSCH repetitions. The same beam mapping pattern continues to the remaining PUSCH repetitions.

[0264] Figure 9B shows an example of Mapping 2. In this example, the number of PUSCH repetitions is 8. PUSCH repetitions #1 and #2 are associated with TRP1, and PUSCH repetitions #3 and #4 are associated with TRP2. This mapping pattern is repeated for PUSCH repetitions #5 to #8.

[0265] [Mapping 3] Equal (half - half) mapping Among multiple PUSCH repetitions, the first - half PUSCH repetitions are mapped to the first TRP (beam). Among multiple PUSCH repetitions, the second - half PUSCH repetitions are mapped to the second TRP.

[0266] Figure 9C shows an example of Mapping 3. In this example, the number of PUSCH repetitions is 8. PUSCH repetitions #1 to #4 are associated with TRP1, and PUSCH repetitions #5 to #8 are associated with TRP2.

[0267] One or more of these mapping patterns are supported, and one mapping pattern may be set by RRC.

[0268] According to this embodiment, the UE can transmit PUSCH transmissions to the appropriate TRP (using the appropriate beam).

[0269] <The Sixth Embodiment> UE capabilities corresponding to at least one function (feature) in the fourth to fifth embodiments may be defined. When the UE reports this UE capability, the UE may perform the corresponding function. When the UE reports this UE capability and the upper - layer parameters corresponding to this function are set, the UE may perform the corresponding function. Upper - layer parameters (RRC information elements) corresponding to this function may be defined. When this upper - layer parameter is set, the UE may perform the corresponding function.

[0270] UE capabilities may indicate whether the UE supports this function.

[0271] UE capabilities may support different P0 / alpha / Rel.16 P0 sets for PUSCH (P0-PUSCH-Set-r16) / PLRS / closed-loop index for PUSCH transmissions to different multiple TRPs without repetition when the PUSCH is scheduled by a DCI format without an SRI field, or when the UE is not provided with the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl).

[0272] UE capabilities may support different P0 / alpha / Rel.16 P0 sets for PUSCH (P0-PUSCH-Set-r16) / PLRS / closed-loop index for PUSCH repetitions of different PUSCHs to different multiple TRPs when the PUSCH is scheduled by a DCI format without an SRI field, or when the UE is not provided with the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl). For PUSCH repetitions of the same PUSCH, the UE may apply the same power control parameters. For example, the UE may support the examples in FIGS. 8A and 8B and may not support the example in FIG. 8C.

[0273] UE capabilities may support different P0 / alpha / Rel.16 P0 sets for PUSCH (P0-PUSCH-Set-r16) / PLRS / closed-loop index for PUSCH repetitions of the same PUSCH to different multiple TRPs when the PUSCH is scheduled by a DCI format without an SRI field, or when the UE is not provided with the SRI-PUSCH power control information element (SRI-PUSCH-PowerControl). For example, the UE may support the example in FIG. 8C.

[0274] The UE capability may be to support different P0 / alpha / P0 set for Rel.16 PUSCH (P0-PUSCH-Set-r16) / PLRS / closed-loop index for different multiple TRPs in at least one of a single DCI-based multi-TRP case and a multi-DCI-based multi-TRP case when the PUSCH is scheduled by a DCI format without an SRI field, or when the UE is not provided with SRI-PUSCH power control information element (SRI-PUSCH-PowerControl).

[0275] According to this embodiment, the UE can implement the above functions while maintaining compatibility with the existing specifications.

[0276] (Wireless communication system) Hereinafter, the configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one or a combination of the wireless communication methods according to the above embodiments of the present disclosure.

[0277] FIG. 10 is a diagram showing an example of the schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.

[0278] In addition, the wireless communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple Radio Access Technologies (RATs). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0279] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the Master Node (MN), and the base station (gNB) of NR is the 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.

[0280] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both the MN and the SN are base stations (gNBs) of NR).

[0281] The wireless communication system 1 may include a base station 11 that forms a relatively wide-coverage macro cell C1, and a base station 12 (12a - 12c) that is disposed within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and the user terminal 20 are not limited to the mode shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

[0282] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) and dual connectivity (DC) using a plurality of component carriers (CCs).

[0283] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands, definitions, etc. of FR1 and FR2 are not limited to these. For example, FR1 may correspond to a frequency band higher than FR2.

[0284] Also, the user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0285] The plurality of base stations 10 may be connected by wire (for example, an optical fiber compliant with Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the upper-level station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0286] The base station 10 may be connected to the core network 30 via another base station 10 or directly. The core network 30 may include at least one of, for example, Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0287] The user terminal 20 may be a terminal corresponding to at least one of communication systems such as LTE, LTE-A, 5G, etc.

[0288] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access method may be used. For example, in at least one of the downlink (DL) and uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. may be used.

[0289] The wireless access method may be referred to as a waveform. Note that in the wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0290] In the wireless communication system 1, as downlink channels, a Physical Downlink Shared Channel (PDSCH) shared by each user terminal 20, a Physical Broadcast Channel (PBCH), a Physical Downlink Control Channel (PDCCH), etc. may be used.

[0291] Also, in the wireless communication system 1, as uplink channels, a Physical Uplink Shared Channel (PUSCH) shared by each user terminal 20, a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), etc. may be used.

[0292] User data, upper layer control information, a System Information Block (SIB), etc. are transmitted by the PDSCH. User data, upper layer control information, etc. may be transmitted by the PUSCH. Also, a Master Information Block (MIB) may be transmitted by the PBCH.

[0293] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, downlink control information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0294] Note that the DCI for scheduling the PDSCH may be called DL assignment, DL DCI, etc., and the DCI for scheduling the PUSCH may be called UL grant, UL DCI, etc. Note that the PDSCH may be read as DL data, and the PUSCH may be read as UL data.

[0295] For PDCCH detection, a control resource set (CORESET) and a search space may be used. The CORESET corresponds to the resource for searching for DCI. The search space corresponds to the search area and search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0296] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. in the present disclosure may be read interchangeably with each other.

[0297] Uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (e.g., also referred to as Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) may be transmitted by PUCCH. A random access preamble for connection establishment with the cell may be transmitted by PRACH.

[0298] Note that in the present disclosure, downlink, uplink, etc. may be expressed without adding "link". Also, "Physical" may not be added at the beginning of various channels.

[0299] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, 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. may be transmitted.

[0300] The synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, an SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0301] Also, in the wireless communication system 1, as the uplink reference signal (Uplink Reference Signal (UL-RS)), a sounding reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may be transmitted. Note that DMRS may also be called a UE-specific reference signal.

[0302] (Base station) FIG. 11 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may be provided.

[0303] In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processes of each part described below may be omitted.

[0304] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0305] The control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping), etc. The control unit 110 may control transmission, reception, measurement, etc. using the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140. The control unit 110 may generate data, control information, a sequence, etc. to be transmitted as signals and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting, releasing, etc.) of communication channels, state management of the base station 10, management of radio resources, etc.

[0306] The transceiver unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0307] The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122. The reception unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0308] The transmission / reception antenna 130 can be composed of an antenna described based on the common understanding in the technical field related to the present disclosure, such as an array antenna.

[0309] The transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0310] The transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0311] The transmission / reception unit 120 (transmission processing unit 1211) may perform processing of the Packet Data Convergence Protocol (PDCP) layer, processing of the Radio Link Control (RLC) layer (e.g., RLC retransmission control), processing of the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc. on, for example, data and control information obtained from the control unit 110, and generate a bit string to be transmitted.

[0312] The transceiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel encoding (which may include error correction encoding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit sequence to be transmitted, and output a baseband signal.

[0313] The transceiver unit 120 (RF unit 122) may perform modulation to the radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna 130.

[0314] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to the baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0315] The transceiver unit 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing on the acquired baseband signal, and acquire user data, etc.

[0316] The transmission / reception unit 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0317] The transmission path interface 140 may transmit and receive signals (backhaul signaling) with devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0318] Note that the transmission unit and reception unit of the base station 10 in the present disclosure may be configured by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0319] When the physical uplink control channel (PUCCH) spatial relation information is not provided to the terminal, the control unit 110 may determine two values of the power control parameter. The transceiver unit 120 may receive the PUCCH transmitted using at least one of the two values of the power control parameter and one or more transmission occasions. The two values may be respectively associated with two indexes. The two indexes may be any of two index values of the control resource set (CORESET) pool index and two index values of the transmission configuration indication (TCI) state associated with one code point of a field in the downlink control information.

[0320] When the physical uplink shared channel (PUSCH) is scheduled by the downlink control information that does not include the sounding reference signal resource indicator (SRI) field, or when the SRI-PUSCH power control information element is not provided to the terminal, the control unit 110 may determine two values of the power control parameter. The transceiver unit 120 may receive the PUSCH transmitted using at least one of the two values of the power control parameter and one or more transmission occasions. The two values may be respectively associated with two indexes. The two indexes may be any of two index values of the control resource set (CORESET) pool index and two index values of the transmission configuration indication (TCI) state associated with one code point of a field in the downlink control information.

[0321] (User Equipment) FIG. 12 is a diagram showing an example of the configuration of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that one or more of the control unit 210, the transceiver unit 220, and the transceiver antenna 230 may be provided.

[0322] Note that in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.

[0323] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0324] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission, reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transmission / reception unit 220.

[0325] The transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmission / reception unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0326] The transmission / reception unit 220 may be configured as an integrated transmission / reception unit or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 2211 and the RF unit 222. The reception unit may be composed of the reception processing unit 2212, the RF unit 222, and the measurement unit 223.

[0327] The transmission / reception antenna 230 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, for example, an array antenna.

[0328] The transceiver unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, etc. The transceiver unit 220 may transmit the above-described uplink channel, uplink reference signal, etc.

[0329] The transceiver unit 220 may form at least one of a transmission beam and a reception beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.

[0330] The transceiver unit 220 (transmission processing unit 2211) may perform processing of the PDCP layer, processing of the RLC layer (e.g., RLC retransmission control), processing of the MAC layer (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, for example, and generate a bit sequence to be transmitted.

[0331] The transceiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc. on the bit sequence to be transmitted, and output a baseband signal.

[0332] Whether or not to apply DFT processing may be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is enabled, the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the above-described transmission processing to transmit the channel using the DFT-s-OFDM waveform, or if not, it may not perform DFT processing as the above-described transmission processing.

[0333] The transceiver unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna 230.

[0334] On the one hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transceiver antenna 230.

[0335] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0336] The transceiver unit 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), reception quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0337] Note that the transmission unit and reception unit of the user terminal 20 in the present disclosure may be constituted by at least one of the transceiver unit 220 and the transceiver antenna 230.

[0338] When physical uplink control channel (PUCCH) spatial relation information is not provided, the control unit 210 may determine two values of power control parameters. The transceiver unit 220 may transmit PUCCH by using at least one of the two values of the power control parameters and one or more transmission occasions. The two values may be respectively associated with two indexes. The two indexes may be any of two index values of a control resource set (CORESET) pool index and two index values of a transmission configuration indication (TCI) state associated with one code point of a field in downlink control information (Embodiments 1 to 3).

[0339] The control unit 210 may determine the two values from any of two sets of the power control parameters, one set of the power control parameters, and two subsets within one set of the power control parameters (Embodiment 1).

[0340] The control unit 210 may associate at least one of the two values with the one or more transmission occasions based on at least one of downlink control information indicating the resources of the PUCCH, the resources of the PUCCH, a radio resource control information element, and a medium access control (MAC) control element (CE) (Embodiment 2).

[0341] The power control parameter may be at least one of P0, a reference signal for path loss, and a closed-loop index (Embodiment 1).

[0342] When the physical uplink shared channel (PUSCH) is scheduled by downlink control information that does not include a sounding reference signal resource indicator (SRI) field, or when an SRI-PUSCH power control information element is not provided, the control unit 210 may determine two values of power control parameters. The transceiver unit 220 may transmit the PUSCH using at least one of the two values of the power control parameters and one or more transmission occasions. The two values may be respectively associated with two indexes. The two indexes may be any of two index values of a control resource set (CORESET) pool index and two index values of a transmission configuration indication (TCI) state associated with one code point of a field in the downlink control information (Embodiments 4 to 6).

[0343] The control unit 210 may determine the two values from any of two sets of the power control parameters, one set of the power control parameters, and two subsets within one set of the power control parameters (Embodiment 4).

[0344] The control unit 210 may associate at least one of the two values with the one or more transmission occasions based on at least one of the downlink control information for scheduling the PUSCH, a radio resource control information element, and a medium access control (MAC) control element (CE) (Embodiment 5).

[0345] The power control parameter may be at least one of P0, alpha, a reference signal for path loss, and a closed-loop index (Embodiment 4).

[0346] (Hardware Configuration) Note that the block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (e.g., using wired, wireless, etc.) connected and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0347] Here, functions include, but are not limited to, judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection determination, establishment, comparison, assumption, expectation, regarded as, notification (broadcasting), notification (notifying), communication (communicating), forwarding, configuration (configuring), reconfiguration (reconfiguring), allocation (allocating, mapping), assignment (assigning), etc. For example, a functional block (component) that functions as transmission may be referred to as a transmission unit, a transmitter, etc. In any case, as described above, the realization method is not particularly limited.

[0348] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 13 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may physically be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0349] In the present disclosure, terms such as device, circuit, device, section, unit, etc. can be read interchangeably with each other. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without including some devices.

[0350] For example, although only one processor 1001 is illustrated, there may be a plurality of processors. Also, the processing may be executed by one processor, or the processing may be executed by two or more processors simultaneously, sequentially, or using other methods. Note that the processor 1001 may be implemented by one or more chips.

[0351] Each function in the base station 10 and the user terminal 20 is realized, for example, by causing a predetermined software (program) to be loaded onto hardware such as the processor 1001 and the memory 1002, and the processor 1001 performs calculations to control communication via the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003.

[0352] The processor 1001 controls the entire computer by operating, for example, an operating system. The processor 1001 may be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the above-described control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0353] Also, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 110(210) may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and the same may be true for other functional blocks.

[0354] The memory 1002 is a computer-readable recording medium, and may be constituted by, for example, at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other appropriate storage media. The memory 1002 may be referred to as a register, cache, main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0355] The storage 1003 is a computer-readable recording medium, and may be constituted by, for example, at least one of a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (e.g., a compact disc (Compact Disc ROM (CD-ROM), etc.), a digital versatile disc, a Blu-ray (registered trademark) disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage 1003 may be referred to as an auxiliary storage device.

[0356] The communication device 1004 is hardware (a transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to implement at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-described transceiver unit 120 (220), transceiver antenna 130 (230), etc. may be implemented by the communication device 1004. The transceiver unit 120 (220) may be physically or logically separated into a transmitter unit 120a (220a) and a receiver unit 120b (220b).

[0357] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an external input. The output device 1006 is an output device (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs an output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (e.g., a touch panel).

[0358] Also, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using different buses for each device.

[0359] In addition, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0360] (Modification example) In addition, terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be read interchangeably with each other. Also, a signal may be a message. A reference signal may also be abbreviated as RS and may be called a pilot, a pilot signal, etc. depending on the applicable standard. Also, a Component Carrier (CC) may be called a cell, a frequency carrier, a carrier frequency, etc.

[0361] The radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may be called a subframe. Further, the subframe may be composed of one or more slots in the time domain. The subframe may have a fixed time length (e.g., 1 ms) that does not depend on numerology.

[0362] Here, the new numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. The new numerology may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering process performed by the transceiver in the frequency domain, specific windowing process performed by the transceiver in the time domain, etc.

[0363] A slot may be composed of one or more symbols (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Also, a slot may be a time unit based on the new numerology.

[0364] A slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, a mini-slot may be called a sub-slot. A mini-slot may be composed of a smaller number of symbols than a slot. The PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using a mini-slot may be called PDSCH (PUSCH) mapping type B.

[0365] A radio frame, sub-frame, slot, mini-slot, and symbol all represent time units for signal transmission. Different names may be used for the radio frame, sub-frame, slot, mini-slot, and symbol respectively. Note that the time units such as frame, sub-frame, slot, mini-slot, and symbol in this disclosure may be read interchangeably with each other.

[0366] For example, one sub-frame may be called a TTI, or a plurality of consecutive sub-frames may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the sub-frame and the TTI may be the sub-frame (1 ms) in the existing LTE, or a period shorter than 1 ms (for example, 1 - 13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, mini-slot, etc. instead of a sub-frame.

[0367] Here, the TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used at each user terminal) to each user terminal in units of TTI. Note that the definition of the TTI is not limited to this.

[0368] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), code block, codeword, etc., or may be a processing unit for scheduling, link adaptation, etc. Note that when the TTI is given, the time interval (for example, the number of symbols) in which the transport block, code block, codeword, etc. are actually mapped may be shorter than the TTI.

[0369] When one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

[0370] A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

[0371] Note that a long TTI (e.g., a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be read as a TTI having a TTI length less than that of a long TTI and not less than 1 ms.

[0372] A resource block (Resource Block (RB)) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or a plurality of consecutive subcarriers. The number of subcarriers included in an RB may be the same regardless of the numerology, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0373] Also, an RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini-slot, 1 subframe, or 1 TTI. One TTI, one subframe, etc. may each be constituted by one or a plurality of resource blocks.

[0374] One or more RBs may be referred to as Physical Resource Blocks (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0375] Also, a resource block may be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource area of 1 sub-carrier and 1 symbol.

[0376] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RBs may be specified by the index of the RBs based on the common reference point of the carrier. A PRB is defined in a certain BWP and may be numbered within the BWP.

[0377] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured within one carrier.

[0378] At least one of the configured BWPs may be active, and it may not be assumed that the UE transmits and receives a predetermined signal / channel outside the active BWP. Note that in the present disclosure, "cell", "carrier", etc. may be read as "BWP".

[0379] Note that the structures such as the above-described radio frame, sub-frame, slot, mini-slot, and symbol are merely examples. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be variously changed.

[0380] In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, relative values from a predetermined value, or using corresponding other information. For example, a radio resource may be indicated by a predetermined index.

[0381] The names used for parameters, etc. in the present disclosure are not limiting names in any way. Furthermore, mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Since various channels (such as PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting names in any way.

[0382] The information, signals, etc. described in the present disclosure may be represented using any of various different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0383] In addition, information, signals, etc. can be output at least one of from a higher layer to a lower layer and from a lower layer to a higher layer. Information, signals, etc. may be input and output via a plurality of network nodes.

[0384] The input / output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. The information, signals, etc. to be input / output may be overwritten, updated, or appended. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.

[0385] The notification of information is not limited to the modes / embodiments described in the present disclosure and may be performed using other methods. For example, the notification of information in the present disclosure may be implemented by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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 combinations thereof.

[0386] Note that the physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Also, the RRC signaling may also be referred to as an RRC message and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. Further, the MAC signaling may be notified, for example, using a MAC Control Element (CE).

[0387] Also, the notification of predetermined information (e.g., the notification of "being X") is not limited to an explicit notification and may be performed implicitly (e.g., by not performing the notification of the predetermined information or by the notification of another piece of information).

[0388] The determination may be made based on a value represented by 1 bit (either 0 or 1), a boolean value represented by true or false, or a numerical comparison (e.g., comparison with a predetermined value).

[0389] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by some other name.

[0390] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of the transmission medium.

[0391] The terms "system" and "network" used in the present disclosure may be used interchangeably. "Network" may mean a device (e.g., a base station) included in the network.

[0392] 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", "panel", etc. can be used interchangeably.

[0393] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. can be used interchangeably. The base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0394] A base station can accommodate one or more (e.g., three) cells. When the base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each of the smaller areas can also provide communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services in this coverage.

[0395] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" can be used interchangeably.

[0396] A mobile station may also be called a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other appropriate term.

[0397] At least one of the base station and the mobile station may also be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may also be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or unmanned). Note that at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0398] Also, the base station in the present disclosure may be replaced by a user terminal. For example, for a configuration in which communication between a base station and a user terminal is replaced by communication between a plurality of user terminals (which may be referred to as, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured to be functions of the user terminal 20. Also, terms such as "uplink" and "downlink" may be replaced with terms corresponding to communication between terminals (for example, "sidelink"). For example, an uplink channel, a downlink channel, etc. may be replaced with a sidelink channel.

[0399] Similarly, the user terminal in the present disclosure may be replaced by a base station. In this case, the functions of the above-described user terminal 20 may be configured to be functions of the base station 10.

[0400] In the present disclosure, operations assumed to be performed by a base station may in some cases be performed by its upper node. In a network including one or more network nodes having a base station, it is clear that 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, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc., but not limited thereto), or a combination thereof.

[0401] Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched and used during execution. Also, the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, for the methods described in the present disclosure, elements of various steps are presented using an exemplary order and are not limited to the specific order presented.

[0402] Each aspect / embodiment described in the present disclosure may be applied to systems using Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (x is, for example, an integer or a decimal), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), other suitable wireless communication methods, and next-generation systems extended based on these. Further, a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G) may be applied.

[0403] The description "based on" used in the present disclosure does not mean "only based on" unless otherwise specified. In other words, the description "based on" means both "only based on" and "at least based on".

[0404] Any reference to an element using terms such as "first", "second", etc. used in this disclosure does not generally limit the quantity or order of those elements. These terms can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not mean that only two elements can be employed or that the first element must precede the second element in any form.

[0405] The term "determining" as used in this disclosure may encompass a wide variety of operations. For example, "determining" may be considered to be "judging", "calculating", "computing", "processing", "deriving", "investigating", "looking up, searching, inquiring" (e.g., searching in a table, database, or another data structure), "ascertaining", etc.

[0406] Also, "determining" may be considered to be "receiving" (e.g., receiving information), "transmitting" (e.g., transmitting information), "input", "output", "accessing" (e.g., accessing data in memory), etc.

[0407] Also, "determining" may be considered to be "resolving", "selecting", "choosing", "establishing", "comparing", etc. That is, "determining" may be considered to be "determining" some operation.

[0408] Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

[0409] The "maximum transmit power" described in this disclosure may mean the maximum value of the transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0410] As used in this disclosure, the terms "connected" and "coupled", or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "accessed".

[0411] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and, as some non-limiting and non-exhaustive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, optical (both visible and invisible) region, etc.

[0412] In this disclosure, the term "A is different from B" may mean that "A is different from B from each other". Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted in the same way as "different".

[0413] In the present disclosure, when the terms "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0414] In the present disclosure, for example, when articles are added by translation, such as a, an and the in English, the present disclosure may include that the nouns following these articles are in the plural form.

[0415] As described above, the invention according to the present disclosure has been described in detail. However, it is obvious to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and changed forms without departing from the spirit and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. A control unit that determines values of first and second power control parameters applied to repeated transmission of a Physical Uplink Control Channel (PUCCH) when Physical Uplink Control Channel (PUCCH) spatial relation information is not provided, for a plurality of Transmission / Reception Points (TRPs); A transmission unit that performs repeated transmission of the PUCCH using the values of the first and second power control parameters and one or more transmission occasions; and A terminal, wherein for each PUCCH resource including the specific PUCCH resource, it is set whether the repeated transmission of the PUCCH using the specific PUCCH resource is associated with a first TRP among the plurality of TRPs, a second TRP, or both the first and second TRPs.

2. The terminal according to claim 1, wherein the power control parameter is at least one of P0 for PUCCH, a path loss reference signal for PUCCH, and a closed-loop index.

3. The terminal according to claim 1, wherein the transmission unit reports a UE capability indicating that it supports the first and second power control parameters applied to the repeated transmission of the PUCCH.

4. The terminal according to claim 1, wherein the control unit applies cyclic mapping or sequential mapping with respect to the mapping between the repeated transmission of the PUCCH and the values of the first and second power control parameters.

5. The terminal according to claim 1, wherein when the number of repeated transmissions of the PUCCH is 4 and the number of the plurality of TRPs is 2, the control unit applies the value of the first power control parameter to the repeated transmissions of the first and third PUCCHs for the first TRP, and applies the value of the second power control parameter to the repeated transmissions of the second and fourth PUCCHs for the second TRP, or applies the value of the first power control parameter to the repeated transmissions of the first and second PUCCHs for the first TRP, and applies the value of the second power control parameter to the repeated transmissions of the third and fourth PUCCHs for the second TRP.

6. When physical uplink control channel (PUCCH) spatial relation information is not provided, determining values of first and second power control parameters applied to repeated transmission of PUCCH for a plurality of transmission / reception points (Transmission / Reception Point (TRP)); using the values of the first and second power control parameters and one or more transmission occasions to perform repeated transmission of the PUCCH; A wireless communication method for a terminal, wherein whether repeated transmission of the PUCCH using a specific PUCCH resource is associated with a first TRP among the plurality of TRPs, a second TRP, or both the first and second TRPs is set for each PUCCH resource including the specific PUCCH resource.

7. When physical uplink control channel (PUCCH) spatial relation information is not provided to a terminal, a control unit that determines values of first and second power control parameters applied to repeated transmission of PUCCH for a plurality of transmission / reception points (Transmission / Reception Point (TRP)); a receiving unit that receives repeated transmission of the PUCCH transmitted using the values of the first and second power control parameters and one or more transmission occasions; A base station, wherein whether repeated transmission of the PUCCH using a specific PUCCH resource is associated with a first TRP among the plurality of TRPs, a second TRP, or both the first and second TRPs is set for each PUCCH resource including the specific PUCCH resource.

8. A system having a terminal and a base station, wherein when physical uplink control channel (PUCCH) spatial relation information is not provided, the terminal has a control unit that determines values of first and second power control parameters applied to repeated transmission of PUCCH for a plurality of transmission / reception points (Transmission / Reception Point (TRP)); and a transmitting unit that performs repeated transmission of the PUCCH using the values of the first and second power control parameters and one or more transmission occasions; wherein when the PUCCH spatial relation information is not provided to the terminal, the base station has a control unit that determines the values of the first and second power control parameters. A receiving unit that receives repeated transmission of the PUCCH transmitted using the values of the first and second power control parameters and the one or more transmission opportunities; A system in which repeated transmission of the PUCCH using a specific PUCCH resource is associated with a first TRP among the plurality of TRPs, associated with a second TRP, or associated with the first and second TRPs, is set for each PUCCH resource including the specific PUCCH resource.

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