Terminal, wireless communication method, base station, and system

Abstract

A terminal according to one embodiment of the present disclosure includes: a receiving unit that receives, through higher layer signaling, specific information indicating a mapping between an identifier representing spatial relationship information and parameters related to uplink control channel (PUCCH) transmit power control; and a control unit that determines parameters related to PUCCH transmit power based on the mapping. According to one embodiment of the present disclosure, parameters related to UL transmit power control can be appropriately determined.

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized to achieve even higher data rates and lower latency (Non-Patent Document 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) has been standardized to further enhance the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Releases (Rel.) 8 and 9).

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

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems (e.g., NR after Rel.17), the UL transmission configuration indication state (Uplink Transmission Configuration Indication state (UL TCI state)) is being studied as a beam indication method for the uplink (UL) of the user terminal (user terminal, User Equipment (UE)).

[0009] However, considering the UL TCI status and spatial relationship information expected to be adopted in future wireless communication systems, how the UE determines parameters related to UL transmit power control has not yet been studied. Failure to appropriately determine parameters related to UL transmit power control may lead to a decrease in communication throughput.

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

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present disclosure comprises: a receiving unit that receives specific information of a mapping of an identifier representing spatial relationship information and parameters related to uplink control channel (PUCCH) transmission power control through high-layer signaling; and a control unit that determines parameters related to PUCCH transmission power based on the mapping.

[0013] Effects of the Invention

[0014] According to one embodiment of the present disclosure, it is possible to appropriately determine parameters related to UL transmit power control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram showing an example of information elements related to existing TCI states.

[0016] Figure 2A This is a diagram showing an example of conventional PUCCH spatial relationship information. Figure 2B This is a diagram showing an example of conventional SRS spatial relationship information.

[0017] Figure 3A This is a diagram showing an example of information related to the spatial relationship between the reference RS and the target RS. Figure 3B This is a diagram showing an example of information related to the spatial relationship between the reference RS and the target RS.

[0018] Figure 4This is a diagram showing PUCCH spatial relationship information of Rel.16.

[0019] Figure 5 This is a diagram showing PUCCH power control information of Rel.16.

[0020] Figure 6 This is a diagram showing an example of PUCCH power control information elements in method 1-1.

[0021] Figure 7 This is a diagram showing an example of the ULTCI-PUCCH mapping configuration information element in method 1-1.

[0022] Figure 8 This is a diagram showing a first example of spatial relationship information in embodiment 1-2.

[0023] Figure 9 This is a diagram showing a second example of spatial relationship information in embodiment 1-2.

[0024] Figure 10 This is a diagram showing an example of parameters related to the power control of the PUSCH in Rel.16.

[0025] Figure 11 This is a diagram showing an example of parameters related to PUSCH power control in Example 2-2.

[0026] Figure 12 This is a diagram showing an example of PUSCH power control information elements in method 2-3.

[0027] Figure 13 This is a diagram showing an example of the ULTCI-PUSCH mapping configuration information element in method 2-3.

[0028] Figure 14 This is a diagram showing an example of parameters related to power control of SRS in Rel.16.

[0029] Figure 15A This is a diagram showing the path loss reference RS setting information in method 3-1. Figure 15B This is a diagram showing spatial relationship information in form 3-1.

[0030] Figure 16 This is a diagram showing spatial relationship information in form 3-2.

[0031] Figure 17 This is a diagram showing the ULTCI path loss reference RS setting information in method 3-3.

[0032] Figure 18A This is a diagram showing the ULTCI path loss reference RS setting information in method 3-4. Figure 18B This is a diagram showing the ULTCI path loss RS mapping setting information in method 3-4.

[0033] Figure 19 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0034] Figure 20 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0035] Figure 21 This is a diagram showing an example of the configuration of a user terminal according to an embodiment.

[0036] Figure 22 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment. DETAILED DESCRIPTION

[0037] (TCI, spatial relationship, QCL)

[0038] In NR, research is being conducted on: the UE's reception processing (for example, at least one of reception, demapping, demodulation, and decoding), and transmission processing (for example, at least one of transmission, mapping, precoding, modulation, and coding) of at least one of the control signals and channels (which can also be expressed as signal / channel. In the present disclosure, it can also be replaced with "at least one of A and B" in the same way as "A / B") based on the transmission configuration indication state (Transmission Configuration Indication state (TCI state)).

[0039] The TCI state may also indicate the state of a signal / channel applied to a downlink. A state equivalent to the TCI state applied to a signal / channel applied to an uplink may also be expressed as a spatial relation.

[0040] The TCI status refers to information related to Quasi-Co-Location (QCL) of signals / channels, and may also be referred to as spatial reception parameters, spatial relationship information, etc. The TCI status may be set for each channel or each signal in the UE.

[0041] QCL is an indicator that represents the statistical properties of a signal / channel. For example, when a signal / channel is in a QCL relationship with another signal / channel, it can also mean that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameters (e.g., spatial Rx parameters) can be assumed to be the same among these different signals / channels (at least one of these is QCL).

[0042] In addition, the spatial reception parameter may also correspond to the UE's receive beam (e.g., receive analog beam), and the beam may also be determined based on spatial QCL. The QCL (or at least one element of QCL) in this disclosure may also be replaced with sQCL (spatial QCL).

[0043] QCLs can also be specified in multiple types (QCL types). For example, four QCL types AD can be set that can assume the same parameters (or parameter sets) but with different parameters. The parameters (also referred to as QCL parameters) are represented below:

[0044] QCL Type A (QCL-A): Doppler shift, Doppler spread, average delay, and delay spread,

[0045] QCL type B (QCL-B): Doppler shift and Doppler spread,

[0046] QCL type C (QCL-C): Doppler shift and average delay,

[0047] QCL type D (QCL-D): spatial reception parameters.

[0048] Types A to C may correspond to QCL information associated with synchronization processing of at least one of time and frequency, and type D may correspond to QCL information related to beam steering.

[0049] The UE's assumption that a specific Control Resource Set (CORESET), channel, or reference signal has a specific QCL (e.g., QCL type D) relationship with other CORESETs, channels, or reference signals may also be referred to as a QCL assumption.

[0050] The UE may also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI status or QCL assumption of the signal / channel.

[0051] The TCI state may be, for example, information related to the QCL of the target channel (or the reference signal (RS) used for the channel) and other signals (for example, other downlink reference signals (DL-RS)). The TCI state may also be set (indicated) through higher layer signaling, physical layer signaling, or a combination thereof.

[0052] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0053] MAC signaling may also use, for example, MAC Control Element (MAC CE) and MAC Protocol Data Unit (MAC PDU). Broadcast information may also include, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), and Other System Information (OSI).

[0054] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

[0055] In addition, the channel / signal that becomes the application object of the TCI state can also be called the target channel / RS (target channel / RS), or simply referred to as the target, etc. The above-mentioned other signals can also be called the reference RS (reference RS), or simply referred to as the reference, etc.

[0056] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0057] In addition, the RS that has a QCL relationship with the channel may be, for example, at least one of a synchronization signal block (SynchronizationSignal Block (SSB)), a channel state information reference signal (Channel State Information ReferenceSignal (CSI-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a tracking CSI-RS (also called a tracking reference signal (TRS)), and a QCL detection reference signal (also called QRS).

[0058] The SSB is a signal block that includes at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a broadcast channel (physical broadcast channel (PBCH)). The SSB may also be referred to as an SS / PBCH block.

[0059] The UE may also receive configuration information of a list of information elements containing TCI states (e.g., PDSCH-Config, tci-StatesToAddModList) through higher layer signaling.

[0060] The TCI state information element (RRC's "TCI-state IE") set through higher-layer signaling may also include a TCI state ID and one or more QCL information ("QCL-Info"). The QCL information may also include at least one of information related to the RS that forms a QCL relationship (RS relationship information) and information indicating the QCL type (QCL type information). The RS relationship information may also include information such as the RS index (e.g., SSB index, non-zero-power CSI-RS (Non-Zero-Power (NZP) CSI-RS) resource ID (Identifier)), the index of the cell where the RS is located, and the index of the bandwidth part (Bandwidth Part (BWP)) where the RS is located.

[0061] In Rel.15NR, as a TCI state of at least one of PDCCH and PDSCH, both QCL type A RS and QCL type D RS, or only QCL type A RS can be set to the UE.

[0062] When TRS is configured as a QCL type A RS, it is assumed that the same TRS is transmitted periodically over a long period of time, unlike the demodulation reference signal (DMRS) of the PDCCH or PDSCH. The UE can measure the TRS and calculate average delay, delay spread, etc.

[0063] A UE in which the TRS is configured as a QCL Type A RS in the TCI state of the DMRS of a PDCCH or PDSCH can assume that the DMRS of the PDCCH or PDSCH has the same QCL Type A parameters (average delay, delay spread, etc.) as those of the TRS. Therefore, the Type A parameters (average delay, delay spread, etc.) of the DMRS of the PDCCH or PDSCH can be calculated based on the measurement results of the TRS. When performing channel estimation for at least one of the PDCCH and PDSCH, the UE can use the measurement results of the TRS to perform more accurate channel estimation.

[0064] A UE configured with a QCL type D RS can determine a UE reception beam (spatial domain reception filter, UE spatial domain reception filter) using the QCL type D RS.

[0065] The RS of QCL type X in the TCI state may also refer to an RS that has a QCL type X relationship with a certain channel / signal (DMRS), and the RS may also be referred to as a QCL source of QCL type X in the TCI state.

[0066] Figure 1This is a diagram showing an example of information elements related to the existing TCI status. Figure 1 The UE may also receive information related to the TCI status by using the information element shown.

[0067] <Spatial Relationship for PUCCH>

[0068] The UE may also be configured with parameters (PUCCH configuration information, PUCCH-Config) used in PUCCH transmission through higher-layer signaling (e.g., Radio Resource Control (RRC) signaling). The PUCCH configuration information may also be configured for each partial bandwidth (e.g., uplink bandwidth part (BWP)) within a carrier (also known as a cell or component carrier (CC)).

[0069] The PUCCH configuration information may also include a list of PUCCH resource set information (eg, PUCCH-ResourceSet) and a list of PUCCH spatial relationship information (eg, PUCCH-SpatialRelationInfo).

[0070] The PUCCH resource set information may also include a list (eg, resourceList) of PUCCH resource indices (IDs, eg, PUCCH-ResourceId).

[0071] In addition, when the UE does not have dedicated PUCCH resource setting information (e.g., dedicated PUCCH resource configuration) provided through PUCCH resource set information within the PUCCH setting information (before establishing RRC), the UE may also determine the PUCCH resource set based on parameters (e.g., pucch-ResourceCommon) within system information (e.g., System Information Block Type 1 (SIB1)) or minimum system information (Remaining Minimum System Information (RMSI)). The PUCCH resource set may also include 16 PUCCH resources.

[0072] On the other hand, when the UE has the above-mentioned dedicated PUCCH resource setting information (UE-dedicated uplink control channel structure, dedicated PUCCH resource structure) (after establishing RRC), the UE can also determine the PUCCH resource set according to the number of UCI information bits.

[0073] The UE may also select a specific field (e.g., a PUCCH resource indicator field) based on the value of the specific field (e.g., a PUCCH resource indicator field) in the downlink control information (downlink control information (DCI)) (e.g., DCI format 1_0 or 1_1 used in the scheduling of PDSCH), the number of CCEs (N) in the control resource set (COntrolREsource SET (CORESET)) for receiving the PDCCH carrying the DCI, and the number of CCEs (N) in the control resource set (COntrolREsource SET (CORESET)) for receiving the PDCCH carrying the DCI. CCE ), the index of the first (initial) CCE received by the PDCCH (n CCE，0 ) to determine at least one of the PUCCH resource sets (for example, a PUCCH resource set determined cell-specifically or individually for the UE) a PUCCH resource (index) within the above-mentioned PUCCH resource set.

[0074] PUCCH spatial relation information (e.g., the "PUCCH-spatialRelationInfo" in the RRC information element) may also indicate multiple candidate beams (spatial domain filters) for PUCCH transmission. PUCCH spatial relation information may also indicate the spatial association between RS (reference signal) and PUCCH.

[0075] Figure 2A This is a diagram showing an example of existing PUCCH spatial relationship information. Figure 2A The UE may also receive PUCCH spatial relationship information based on the information shown (eg, RRC information element).

[0076] In addition, in the present disclosure, index, ID, indicator, resource ID, etc. can also be replaced with each other.

[0077] The list of PUCCH spatial relationship information may also include several elements (PUCCH spatial relationship information IE (Information Element)). Each PUCCH spatial relationship information may also include, for example, at least one of an index of the PUCCH spatial relationship information (ID, e.g., pucch-SpatialRelationInfoId), an index of the serving cell (ID, e.g., servingCellId), and information related to the RS with which the PUCCH forms a spatial relationship (reference RS).

[0078] For example, the RS-related information may include an SSB index, a CSI-RS index (e.g., an NZP-CSI-RS resource structure ID), an SRS resource ID, and a BWP ID. The SSB index, CSI-RS index, and SRS resource ID may also be associated with at least one of a beam, a resource, and a port selected by measuring the corresponding RS.

[0079] When more than one PUCCH-related spatial relation information is set, the UE may also perform control based on the PUCCH spatial relation activation / deactivation MAC CE so that one PUCCH spatial relation information becomes active for one PUCCH resource at a certain time.

[0080] The PUCCH spatial relationship activation / deactivation MAC CE of Rel.15NR is expressed by a total of three octets (8 bits×3=24 bits) of octets (Octet, Oct) 1-3.

[0081] The MAC CE may also include information such as the serving cell ID ("Serving Cell ID" field) of the application object, the BWP ID ("BWP ID" field), and the PUCCH resource ID ("PUCCH Resource ID" field).

[0082] In addition, the MAC CE contains "S i ”(i=0-7) field. In a certain S i When the field indicates 1, the UE activates the spatial relationship information of the spatial relationship information ID#i. i When the field indicates 0, the UE deactivates the spatial relationship information of the spatial relationship information ID#i.

[0083] The UE may activate the PUCCH relationship information specified by the MAC CE 3 ms after transmitting a positive response (ACK) to the MAC CE for activating specific PUCCH spatial relationship information.

[0084] <Spatial Relationship between SRS and PUSCH>

[0085] The UE may also receive information (SRS configuration information, for example, parameters in the "SRS-Config" of the RRC control element) used in transmitting a measurement reference signal (for example, a sounding reference signal (SRS)).

[0086] Specifically, the UE may also receive at least one of information related to one or more SRS resource sets (SRS resource set information, for example, "SRS-ResourceSet" of the RRC control element) and information related to one or more SRS resources (SRS resource information, for example, "SRS-Resource" of the RRC control element).

[0087] An SRS resource set may also be associated with a specific number of SRS resources (a specific number of SRS resources may also be grouped). Each SRS resource may also be identified by an SRS resource identifier (SRS Resource Indicator (SRI)) or an SRS resource ID (Identifier).

[0088] The SRS resource set information may also include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and information on the usage of the SRS.

[0089] Here, the SRS resource type can also represent any one of periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic SRS (A-SRS, AP-SRS). In addition, the UE can also periodically (or periodically after activation) send P-SRS and SP-SRS, and send A-SRS based on the SRS request of the DCI.

[0090] Furthermore, the usage ("usage" in the RRC parameter, "SRS-SetUse" in the L1 (Layer-1) parameter) may include, for example, beam management, codebook-based transmission (CB), non-codebook-based transmission (NCB), antenna switching, etc. SRS for codebook-based or non-codebook-based transmission may also be used to determine the precoder for codebook-based or non-codebook-based PUSCH transmission based on SRI.

[0091] For example, in the case of codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI), and Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE may also determine the precoder for PUSCH transmission based on SRI.

[0092] SRS resource information may also include SRS resource ID (SRS-ResourceId), number of SRS ports, SRS port number, sending comb, SRS resource mapping (for example, time and / or frequency resource location, resource offset, resource period, number of repetitions, number of SRS symbols, SRS bandwidth, etc.), jump association information, SRS resource type, sequence ID, SRS spatial relationship information, etc.

[0093] The spatial relationship information of the SRS (e.g., the "spatialRelationInfo" element of the RRC information element) may also indicate the spatial relationship information between a specific reference signal and the SRS. This specific reference signal may also be at least one of a synchronization signal / physical broadcast channel (SS / PBCH) block, a channel state information reference signal (CSI-RS), and an SRS (e.g., another SRS). The SS / PBCH block may also be referred to as a synchronization signal block (SSB).

[0094] Figure 2B This is a diagram showing an example of spatial relationship information of a conventional SRS. Figure 2B The UE may also receive the spatial relationship information of the SRS by using the information shown (eg, RRC information element).

[0095] The spatial relationship information of the SRS may also include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific reference signal.

[0096] In addition, in this disclosure, the SSB index, SSB resource ID, and SSBRI (SSB resource identifier (SSBResourceIndicator)) can also be replaced with each other. In addition, the CSI-RS index, CSI-RS resource ID, and CRI (CSI-RS resource identifier (CSI-RS Resource Indicator)) can also be replaced with each other. In addition, the SRS index, SRS resource ID, and SRI can also be replaced with each other.

[0097] The spatial relationship information of the SRS may also include a serving cell index, a BWP index (BWP ID), etc. corresponding to the above-mentioned specific reference signal.

[0098] In NR, uplink signal transmission can also be controlled based on the presence or absence of beam correlation (BC). BC can also refer to the ability of a node (e.g., a base station or UE) to determine the beam used for signal transmission (transmit beam, Tx beam) based on the beam used for signal reception (receive beam, Rx beam).

[0099] In addition, BC can also be called transmit / receive beam correlation (Tx / Rx beamcorrespondence), beam reciprocity (beam reciprocity), beam calibration (beam calibration), calibrated / non-calibrated (Calibrated / Non-calibrated), reciprocity calibrated / non-calibrated (reciprocity calibrated / non-calibrated), correspondence, consistency, etc.

[0100] For example, in the absence of BC, the UE may also send uplink signals (e.g., PUSCH, PUCCH, SRS, etc.) based on the measurement results of one or more SRS (or SRS resources) using the same beam (spatial domain transmit filter) as the SRS (or SRS resources) indicated from the base station.

[0101] On the other hand, in the case of BC, the UE may also use a beam (spatial domain transmit filter) that is the same as or corresponds to the beam (spatial domain receive filter) used in the reception of a specific SSB or CSI-RS (or CSI-RS resource) to send uplink signals (e.g., PUSCH, PUCCH, SRS, etc.).

[0102] When spatial relationship information related to SSB or CSI-RS and SRS is set for a certain SRS resource (for example, when BC is provided), the UE may transmit the SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain receive filter) used to receive the SSB or CSI-RS. In this case, the UE may also assume that the UE receive beam for the SSB or CSI-RS is the same as the UE transmit beam for the SRS.

[0103] When spatial relationship information related to another SRS (reference SRS) and the target SRS is set for a specific SRS (target SRS) resource (for example, when there is no BC), the UE may transmit the target SRS resource using the same spatial domain filter (spatial domain transmit filter) as that used to transmit the reference SRS. In other words, in this case, the UE may assume that the UE transmit beam for the reference SRS is the same as the UE transmit beam for the target SRS.

[0104] The UE may also determine the spatial relationship of the PUSCH scheduled by the DCI based on the value of a specific field (e.g., the SRS resource identifier (SRI) field) within the DCI (e.g., DCI formats 0_1). Specifically, the UE may also use the spatial relationship information of the SRS resources determined based on the value of the specific field (e.g., SRI) in the PUSCH transmission (e.g., the "spatialRelationInfo" of the RRC information element).

[0105] When codebook-based transmission is used for PUSCH, the UE may be configured with two SRS resources via RRC and instructed to use one of the two SRS resources via DCI (a 1-bit specific field). When non-codebook-based transmission is used for PUSCH, the UE may be configured with four SRS resources via RRC and instructed to use one of the four SRS resources via DCI (a 2-bit specific field). To use a spatial relationship other than the two or four spatial relationships configured via RRC, RRC reconfiguration is required.

[0106] In addition, the spatial relationship of the SRS resources used in the PUSCH can be configured for DL-RS. For example, for SP-SRS, the UE can be configured with the spatial relationship of multiple (e.g., up to 16) SRS resources through RRC and be instructed to use one of the multiple SRS resources through MAC CE.

[0107] UL TCI status

[0108] In future wireless communication systems (e.g., NR after Rel. 17), the use of the UL TCI state as a UL beam indication method is under study. The UL TCI state is similar to the notification of the UE's DL beam (DL TCI state). In addition, the DL TCI state can also be interchanged with the TCI state used for PDCCH / PDSCH.

[0109] The channel / signal (also referred to as the target channel / RS) for which the UL TCI state is set (specified) may be, for example, at least one of PUSCH (DMRS of PUSCH), PUCCH (DMRS of PUCCH), random access channel (Physical Random Access Channel (PRACH)), SRS, etc.

[0110] In addition, the RS (source RS) that has a QCL relationship with the channel / signal can be, for example, a DL RS (for example, SSB, CSI-RS, TRS, etc.) or a UL RS (for example, SRS, SRS for beam management, etc.).

[0111] In the UL TCI state, the RS that is in a QCL relationship with the channel / signal can also be associated with the panel ID used to receive or transmit the RS. This association can be explicitly set (or specified) through higher-layer signaling (e.g., RRC signaling, MAC CE, etc.) or implicitly determined.

[0112] The correspondence between the RS and the panel ID may be set by being included in the UL TCI status information, or may be set by being included in at least one of the resource setting information, spatial relationship information, etc. of the RS.

[0113] The QCL type represented by the UL TCI state can be either the existing QCL type AD or other QCL types, and can also include a specific spatial relationship, an associated antenna port (port index), etc.

[0114] If a panel ID is specified for UL transmission (e.g., specified via DCI), the UE may also use the panel corresponding to the panel ID for the UL transmission. The panel ID may also be associated with the UL TCI state. When a UL TCI state is specified (or activated) for a specific UL channel / signal, the UE may also determine the panel to be used for UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0115] (Multiple TRP)

[0116] In NR, one or more transmission / reception points (TRPs) (multi-TRPs) are being studied to use one or more panels (multi-panels) to perform DL transmissions to the UE. In addition, the UE is being studied to perform UL transmissions to one or more TRPs.

[0117] In addition, multiple TRPs may correspond to the same cell identifier (cell identifier (ID)) or different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0118] Different code words (CW) and different layers may be transmitted from each TRP of the multi-TRP. As one method of multi-TRP transmission, non-coherent joint transmission (NCJT) is being studied.

[0119] In NCJT, for example, TRP1 performs modulation mapping on a first codeword and layer mapping to transmit a first PDSCH using a first precoding scheme for a first number of layers (e.g., two layers). Furthermore, TRP2 performs modulation mapping on a second codeword and layer mapping to transmit a second PDSCH using a second precoding scheme for a second number of layers (e.g., two layers). It is also conceivable that these first and second PDSCHs are not in a quasi-co-location (QCL) relationship (not quasi-co-located).

[0120] In addition, multiple PDSCHs that are NCJTed may also be defined to partially or completely overlap with respect to at least one of the time domain and the frequency domain. That is, at least one of the time and frequency resources of the first PDSCH from the first TRP and the second PDSCH from the second TRP may also overlap.

[0121] (Path loss reference RS)

[0122] Path loss reference RSs (path loss reference signal (RS), path loss reference RS, path loss measurement RS) can also be used to calculate path loss for PUSCH / PUCCH / SRS. In Rel.15 NR, the maximum number of path loss reference RSs is 4. In other words, the UE does not expect each serving cell to simultaneously maintain more than 4 path loss reference RSs for all PUSCH / PUCCH / SRS transmissions.

[0123] (Transmit Power Control)

[0124] <PUSCH Transmit Power Control>

[0125] In NR, the transmission power of PUSCH is controlled based on the TPC command (also called value, increase / decrease value, correction value, etc.) indicated by the value of a specific field (also called TPC command field, etc.) within the DCI.

[0126] For example, when the UE transmits PUSCH on the activated UL BWPb of the carrier f of the serving cell c using the parameter set (open-loop parameter set) with index j and the power control adjustment state with index l, the transmission power (P) of the PUSCH in the PUSCH transmission opportunity (transmission occasion) (also called transmission period, etc.) i is PUSCH，b，f，c (i, j, q d , l)) can also be represented by the following formula (1).

[0127] Here, the power control adjustment state may be configured by a higher-layer parameter to include multiple states (e.g., two states) or a single state. Furthermore, when multiple power control adjustment states are configured, one of the multiple power control adjustment states may be identified by an index l (e.g., l∈{0,1}). The power control adjustment state may also be referred to as a PUSCH power control adjustment state, a first state, a second state, or the like.

[0128] Furthermore, the PUSCH transmission opportunity i is a specific period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0129] [Mathematical formula 1]

[0130] Formula (1)

[0131]

[0132] In formula (1), P CMAX，f，c(i) For example, it is the transmission power (also called maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i. O＿PUSCH，b，f，c (j) For example, it is a parameter related to the target receiving power set in the activation UL BWPb of the carrier f of the service cell c in the parameter set setting j (for example, also called a parameter related to the transmission power offset, the transmission power offset P0, the target receiving power parameter, etc.).

[0133] M PUSCH RB，b，f，c (i) For example, it is the number of resource blocks (bandwidth) allocated to the PUSCH in the transmission opportunity i in the active UL BWPb of the serving cell c and the carrier f with the subcarrier spacing μ. b，f，c (j) is a value provided by a higher layer parameter (for example, also referred to as msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0134] PL b，f，c (q d ) For example, the index q of the reference signal for downlink BWP (path loss reference RS, path loss measurement DL RS, PUSCH-PathlossReferenceRS) associated with the activated UL BWPb of carrier f of serving cell c is used. d , the path loss calculated by the user terminal (path loss compensation).

[0135] Δ TF，b，f，c (i) is a transmission power adjustment component (offset, transmission format compensation) for UL BWPb of carrier f of serving cell c.

[0136] f b，f，c (i, l) is the value of the TPC command of the power control adjustment state index l based on the activated UL BWP of the serving cell c and the carrier f of the transmission opportunity i (e.g., power control adjustment state, cumulative value of TPC commands, closed-loop value). b，f，c (i, l) can also be expressed by formula (2). l can also be called a closed-loop index.

[0137] [Mathematical formula 2]

[0138] Formula (2)

[0139] f b，f，c (i,l)=f b，f，c (i last , l)+δ PUSCH，b，f，c (i last ,i,K PUSCH , l)

[0140] In formula (2), δ PUSCH，b，f，c (i last ,i,K PUSCH , l) For example, it can be the previous PUSCH transmission opportunity i lastThe TPC command may be represented by a TPC command field value in a DCI (e.g., DCI format 0_0 or 0_1) in which the activated UL BWPb of the carrier f of the serving cell c is detected in the subsequent transmission opportunity i, or may be a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled by a specific RNTI (Radio Network Temporary Identifier) (e.g., TPC-PUSCH-RNTI) (CRC-scrambled).

[0141] In the case that the UE is not provided with a path loss reference RS (e.g., PUSCH-PathlossReferenceRS), or in the case that the UE is not provided with dedicated higher layer parameters, the UE may also use the RS resources from the SSB used to obtain the Master Information Block (MIB) to calculate the PL b，f，c (q d ).

[0142] When the UE is configured with the number of RS resource indices up to the value of the maximum number of path loss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRS) and a set of RS configurations for RS resource indices is configured by the path loss reference RS, the set of RS resource indices may include one or both of the set of SS / PBCH block indices and the set of CSI-RS resource indices. The UE may also identify the RS resource index q within the set of RS resource indices. d .

[0143] When PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE may also use the same RS resource index q as that used for the corresponding PRACH transmission. d .

[0144] In the case of being provided with a setting for power control of the SRI-based PUSCH (e.g., SRI-PUSCH-PowerControl) and being provided with more than one value of the ID of the path loss reference RS, the UE may also obtain the mapping between the set of values of the SRI field in DCI format 0_1 and the set of ID values of the path loss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may also determine the RS resource index q based on the ID of the path loss reference RS mapped to the SRI field value in DCI format 0_1 for scheduling the PUSCH. d .

[0145] In the case where PUSCH transmission is scheduled using DCI format 0_0 and the UE is not provided with PUCCH spatial relation information for the PUCCH resource with the lowest index of activated UL BWPb for each carrier f and serving cell c, the UE may also use the same RS resource index q as the PUCCH transmission within the PUCCH resource. d .

[0146] In the case where PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with the spatial configuration of PUCCH transmission, or in the case where PUSCH transmission is scheduled by DCI format 0_1 that does not include the SRI field, or in the case where the configuration of SRI-based PUSCH power control is not provided to the UE, the UE may also use the RS resource index q with a zero path loss reference RS ID d .

[0147] When the PUSCH transmission is configured by configuring a grant configuration (e.g., ConfiguredGrantConfig), and the grant configuration includes a specific parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q d It may also be provided to the UE via a path loss reference index (eg, pathlossReferenceIndex) within a specific parameter.

[0148] In the case where the PUSCH transmission is configured by configuring the grant configuration and the grant configuration does not include specific parameters, the UE may also determine the RS resource index q based on the value of the path loss reference RS ID mapped to the SRI field in the DCI format that activates the PUSCH transmission. d In the case where the DCI format does not contain the SRI field, the UE may also determine the RS resource index q of the ID of the reference RS with zero path loss.d .

[0149] Furthermore, equations (1) and (2) are merely examples and are not limited thereto. A user terminal may control the PUSCH transmit power based on at least one of the parameters exemplified in equations (1) and (2), and may include additional parameters or omit some parameters. Furthermore, in equations (1) and (2), the PUSCH transmit power is controlled for each activated UL BWP for a carrier in a serving cell, but this is not limiting. At least some of the serving cell, carrier, BWP, and power control adjustment state may be omitted.

[0150] <PUCCH Transmit Power Control>

[0151] In addition, in NR, the transmission power of PUCCH is controlled based on the TPC command (also called value, increase or decrease value, correction value, indication value, etc.) represented by the value of a specific field (also called TPC command field, first field, etc.) within the DCI.

[0152] For example, using the index l of the power control adjustment state, the PUCCH transmission power (P PUCCH，b，f，c (i,q u ,q d , l)) can also be represented by the following formula (3).

[0153] The power control adjustment state may also be referred to as a PUCCH power control adjustment state, a first state, a second state, or the like.

[0154] Furthermore, the PUCCH transmission opportunity i is a specific period during which the PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, and the like.

[0155] [Mathematical formula 3]

[0156] Formula (3)

[0157]

[0158] In formula (3), P CMAX，f，c (i) For example, it is the transmission power (also called maximum transmission power, UE maximum output power, etc.) of the user terminal set for carrier f of serving cell c in transmission opportunity i.O＿PUCCH，b，f，c (q u ) For example, it is a parameter related to the target receiving power set in the activation UL BWPb of the carrier f of the service cell c in the transmission opportunity i (for example, also called a parameter related to the transmission power offset, the transmission power offset P0 or the target receiving power parameter, etc.).

[0159] M PUCCH RB，b，f，c (i) For example, the number of resource blocks (bandwidth) allocated to the PUCCH in transmission opportunity i in the active UL BWPb of the serving cell c and the carrier f with a subcarrier spacing μ. b，f，c (q d ) For example, the index q of the reference signal for downlink BWP (path loss reference RS, path loss measurement DLRS, PUCCH-PathlossReferenceRS) associated with the activated UL BWPb of carrier f of serving cell c is used d， Path loss calculated by the user terminal.

[0160] Δ F＿PUCCH (F) is a higher layer parameter given for each PUCCH format. TF，b，f，c (i) is a transmission power adjustment component (offset) for UL BWPb of carrier f in serving cell c.

[0161] g b，f，c (i, l) is the value of the TPC command for the power control adjustment state index l based on the activated UL BWP of carrier f in serving cell c and transmission opportunity i (e.g., power control adjustment state, accumulated value of TPC commands, closed-loop value, PUCCH power adjustment state). For example, g b，f，c (i, l) can also be expressed by formula (4).

[0162] [Formula 4]

[0163] Formula (4)

[0164] g b，f，c (i, l) = g b，f，c (i last , l)+δ PUCCH，b，f，c (i last ,i,K PUCCH , l)

[0165] In formula (4), δ PUCCH，b，f，c (i last ,i,K PUCCH, l) For example, it can be the previous PUCCH transmission opportunity i last The TPC command may be represented by a TPC command field value in a DCI (e.g., DCI format 1_0 or 1_1) in which the activated UL BWPb of the carrier f of the serving cell c is detected in the subsequent transmission opportunity i, or may be a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled by a specific Radio Network Temporary Identifier (RNTI)) (e.g., TPC-PUCCH-RNTI) (CRC-scrambled).

[0166] When the UE is provided with information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relationship information (PUCCH-SpatialRelationInfo), l = {0, 1}. When the UE is not provided with information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relationship information, l can also be 0.

[0167] When the UE receives a TPC command value from DCI format 1_0 or 1_1, and when the UE is provided with PUCCH spatial relationship information, the UE can also obtain the mapping between the PUCCH spatial relationship information ID (pucch-SpatialRelationInfoId) value and the closed loop index (closedLoopIndex, power adjustment state index 1) based on the index provided by the PUCCH P0 ID (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). When the UE receives an activation command including the PUCCH spatial relationship information ID value, the UE can also determine the closed loop index value provided with the value 1 by linking to the corresponding PUCCH P0 ID.

[0168] When the UE activates UL BWPb for carrier f of serving cell c, the higher layer provides the P power adjustment state l for the corresponding PUCCH. O＿PUCCH，b，f，c (q u ) value, g b，f，c (i, l) = 0, k = 0, 1, ..., i. In the case where the UE is provided with PUCCH spatial relationship information, the UE may also uThe PUCCH spatial relationship information associated with the P0 ID and the closed-loop index value corresponding to l is obtained according to q u The value of l is determined by the value of .

[0169] q u It may be a PUCCH P0 ID (p0-PUCCH-Id) indicating the PUCCH P0 (P0-PUCCH) within the PUCCH P0 set (p0-Set).

[0170] Furthermore, equations (3) and (4) are merely examples and are not limited thereto. A user terminal may control the PUCCH transmit power based on at least one of the parameters exemplified in equations (3) and (4), and may include additional parameters or omit some of the parameters. Furthermore, in equations (3) and (4), the PUCCH transmit power is controlled for each activated UL BWP for a carrier in a serving cell, but this is not limiting. At least some of the serving cell, carrier, BWP, and power control adjustment state may also be omitted.

[0171] <SRS Transmit Power Control>

[0172] For example, using the index l of the power control adjustment state, the SRS transmission power (P SRS，b，f，c (i,q s , l)) can also be represented by the following formula (5).

[0173] The power control adjustment state may also be referred to as an SRS power control adjustment state, a value based on a TPC command, an accumulated value of a TPC command, a closed-loop value, a first or second state, etc. l may also be referred to as a closed-loop index.

[0174] Furthermore, the SRS transmission opportunity i is a specific period during which the SRS is transmitted, and may be composed of, for example, one or more symbols, one or more time slots, or the like.

[0175] [Formula 5]

[0176] Formula (5)

[0177]

[0178] In formula (5), P CMAX，f，c(i) is, for example, the UE maximum output power for carrier f of serving cell c in SRS transmission opportunity i. O＿SRS，b，f，c (q s ) is achieved by activating UL BWPb and SRS resource set q for carrier f of serving cell c s Parameters related to the target received power provided by p0 (provided through SRS-ResourceSet and SRS-ResourceSetId) (for example, also called parameters related to the transmit power offset, transmit power offset P0 or target received power parameters, etc.).

[0179] M SRS，b，f，c (i) is the SRS bandwidth represented by the number of resource blocks for SRS transmission opportunity i on activated UL BWPb for carrier f with serving cell c and subcarrier spacing μ.

[0180] α SRS，b，f，c (q s ) by activating UL BWPb and SRS resource set q for serving cell c and carrier f with subcarrier spacing μ s α (e.g., alpha) is provided.

[0181] PL b，f，c (q d ) is the activated DL BWP and SRS resource set q for serving cell c s , using RS resource index q d DL path loss estimate calculated by the UE [dB]. RS resource index q d Is the same as SRS resource set q s The associated path loss reference RS is provided by a DL RS for path loss measurement, for example, pathlossReferenceRS, and is an SS / PBCH block index (for example, ssb-Index) or a CSI-RS resource index (for example, csi-RS-Index).

[0182] h b，f，c (i, l) is the SRS power control adjustment state for the activated UL BWP and SRS transmission opportunity i for carrier f of serving cell c. The SRS power control adjustment state setting (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for SRS transmission and PUSCH transmission, and is the current PUSCH power control adjustment state f. b，f，cOn the other hand, if the SRS power control adjustment state setting indicates independent power control adjustment states for SRS transmission and PUSCH transmission, and no TPC accumulation setting is provided, the SRS power control adjustment state h b，f，c (i) can also be expressed by formula (6).

[0183] [Formula 6]

[0184] Formula (6)

[0185]

[0186] In formula (6), δ SRS，b，f，c (m) can also be encoded in the PDCCH with DCI (e.g., DCI format 2_3) along with other TPC commands. SRS，b，f，c (m) can also be on the activated UL BWPb of the serving cell c and the carrier f with subcarrier spacing μ, at the K of the SRS transmission opportunity i-i0 SRS (i-i0)-1 symbol ago and K of SRS transmission opportunity i SRS (i) The UE receives the cardinality (concentration) c(S) before the code element. i ) of the TPC command value set S i Here i0>0 is the total number of TPC commands in SRS transmission opportunity i-i0. SRS (i-i0)-1 symbol ago than K of SRS transmission opportunity i SRS (i) The smallest integer preceding the symbol.

[0187] Equations (5) and (6) are merely examples and are not intended to be limiting. A user terminal may control the SRS transmit power based on at least one of the parameters exemplified in equations (5) and (6), including additional parameters or omitting some parameters. Furthermore, in equations (5) and (6), the SRS transmit power is controlled for each BWP of a carrier in a cell, but this is not limiting. At least some of the cell, carrier, BWP, and power control adjustment state may be omitted.

[0188] (Indication of power control settings)

[0189] In Rel.15NR, to track changes in spatial relationships, the SRI field in the DCI can be used to switch between various open-loop (OL)-TPC or closed-loop (CL)-TPC states. When the SRS resource set is used for codebook transmission, the maximum number of SRI field values is 2 (the SRI field length is 1 bit). When the SRS resource set is used for non-codebook transmission, the maximum number of SRI field values is 4 (the SRI field length is 2 bits).

[0190] In order to set the power control setting for PUSCH, the PUSCH power control information (PUSCH-PowerControl) within the PUSCH configuration information (PUSCH-Config) includes a list (sri-PUSCH-MappingToAddModList) of power control settings (SRI-PUSCH-PowerControl) mapped to the SRI field value. The power control setting includes a power control setting ID (sri-PUSCH-PowerControlId) corresponding to the SRI field value, a path loss reference RS ID (sri-PUSCH-PathlossReferenceRS-Id) representing the path loss reference RS, a P0-alpha set ID (sri-P0-PUSCH-AlphaSetId) representing the set of P0 and alpha, and a closed loop (CL) ID (sri-PUSCH-ClosedLoopIndex) corresponding to the power control state l.

[0191] At least one of the path loss reference RS ID, the P0-α set ID, and the closed-loop ID can also be referred to as a power control (transmit power control, TPC) parameter. At least one of the path loss reference RS ID and the P0-α set ID is used in open-loop (OL) power control and can therefore also be referred to as an OL power control (TPC) parameter. The closed-loop ID is used in closed-loop (CL) power control and can therefore also be referred to as a CL power control (TPC) parameter.

[0192] For example, power control configuration #0 including P0#0, α#0, path loss reference RS#0, and power control adjustment state #0 (l=0) may also be associated with an SRI field value of 0, and power control configuration #1 including P0#1, α#1, path loss reference RS#1, and power control adjustment state #1 (l=1) may also be associated with an SRI field value of 1. The UE is informed of the associated power control configuration via the SRI field.

[0193] When only one SRS resource is configured for the UE, the SRI field length is 0 bits.

[0194] In order to configure the power control configuration for PUCCH, the PUCCH configuration information (PUCCH-Config) includes the power control configuration (PUCCH-PowerControl). The power control configuration includes the correction value Δ for each PUCCH format. F＿PUCCH (F) (deltaF-PUCCH-f0, deltaF-PUCCH-f1, deltaF-PUCCH-f2, deltaF-PUCCH-f3, deltaF-PUCCH-f4), a set of P0s (p0-Set), a set of path loss reference RSs (pathlossReferenceRSs), and information indicating whether two PUCCH power adjustment states are used (twoPUCCH-PC-AdjustmentStates). The path loss reference RS can also be represented by an SSB index (SSB-Index) or a CSI-RS (NZP-CSI-RS resource ID (NZP-CSI-RS-ResourceId)).

[0195] In this way, in Rel.15NR, the power control settings can be switched.

[0196] (Spatial relationship between reference RS and target RS)

[0197] The UE may also receive information related to the newly defined spatial relationship between the reference RS and the target RS (or, the QCL setting) from the network (NW, such as gNB).

[0198] The UE may also determine the UL beam used by the UE based on the newly defined information related to the spatial relationship between the reference RS and the target RS.

[0199] For example, the UE receives newly defined information on the spatial relationship (TCI state) between the reference RS and the target RS from the NW.

[0200] Next, the UE determines the UL beam used by the UE based on the newly defined information related to the spatial relationship (TCI state) between the reference RS and the target RS, and performs UL transmission to the NW.

[0201] In the present disclosure, the newly defined information related to the spatial relationship between the reference RS and the target RS may be replaced with information related to the UL TCI state, information related to the TCI state that is common to both DL and UL, and the like.

[0202] Here, a method for notifying the UE of information related to the newly defined spatial relationship between the reference RS and the target RS (or the QCL setting) as a framework for the new UL TCI is described. In addition, the application of information related to the spatial relationship between the reference RS and the target RS as a framework for the new UL TCI is described.

[0203] The UE may also receive information related to a newly defined spatial relationship between the reference RS and the target RS (eg, UL TCI state). For example, the UE receives information related to a newly defined spatial relationship between the reference RS and the target RS (eg, UL TCI state) from the NW.

[0204] Next, the UE determines the UL beam used by the UE based on the newly defined information related to the spatial relationship between the reference RS and the target RS (for example, the UL TCI state), and performs UL transmission to the NW.

[0205] The UE may also receive the newly defined information related to the spatial relationship between the reference RS and the target RS (eg, UL TCI state) through at least one of higher layer signaling and physical layer signaling. Alternatively, the UE may receive the information through a combination of higher layer signaling and physical layer signaling.

[0206] The newly defined information regarding the spatial relationship between the reference RS and the target RS may also be, for example, specific information of an RRC information element (e.g., spatialRelationInfo-r17). The reference RS may also be, for example, at least one of an SSB, a CSI-RS, and an SRS. The target RS may also be, for example, a UL RS (e.g., at least one of a DMRS, a PRACH, and an SRS used to demodulate at least one of a PUCCH or a PUSCH).

[0207] In a specific information element (e.g., spatialRelationInfo-r17), an index (ID, e.g., SpatialRelationInfoId) associated with a certain number (e.g., X (X is an integer greater than or equal to 0)) of specific information may be set. In the index associated with a certain number (e.g., X) of specific information, a subset of information related to a certain number (e.g., X) of spatial relationships may be set in each target RS (e.g., at least one of SRS, PUCCH-Config, PUSCH-Config, and PRACH).

[0208] The UE may also be set with a candidate (list) of newly specified information related to the spatial relationship between the reference RS and the target RS through RRC signaling, and be activated / deactivated with information related to the spatial relationship for a certain channel / RS (e.g., SRS, PUCCH, PUSCH) through MAC CE.

[0209] In addition, the UE can also be set with a candidate (list) of newly specified information related to the spatial relationship between the reference RS and the target RS through RRC signaling, and dynamically indicated by L1 signaling (e.g., downlink control information (DCI)) with information related to the spatial relationship used for a certain channel / RS (e.g., non-periodic SRS, PUSCH, PRACH (e.g., PRACH indicated by transmitting a PDCCH in a DCI format containing new fields) and PUCCH (e.g., PUCCH indicated by a new field within DL allocation)).

[0210] The UE may also receive information related to the spatial relationship (UL TCI state) applied to a specific channel / RS through physical layer signaling (L1 signaling). Resource-related information (e.g., resource ID) is set (indicated) for the specific channel / RS, but a different spatial relationship may be set for each of the set (indicated) resources. In other words, the UE may also assume that a different spatial relationship (UL TCI state) is set for each resource set for the specific channel / RS.

[0211] For example, information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may also be Figure 3A The information element related to the spatial relationship between the reference RS and the target RS is shown. In the information element spatialRelationInfo-r17, an index (SpatialRelationInfoId) related to a certain number (eg, X) of specific information may also be set.

[0212] In addition, if Figure 3B As shown, information related to the panel (e.g., ID, index (panelIndex)) may also be set within the information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) element. The information related to the panel may also be information related to the UE antenna group (UE antenna group ID), information related to a specific RS group (specific RS group ID), or at least one of other similar IDs.

[0213] The newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may also be applied to a certain UL channel / RS. For example, the newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may also be applied to all UL channels / RSs. In other words, the UE may be configured with only the newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) to replace the existing spatial relationship.

[0214] In addition, for example, newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may be applied to some UL channels / RSs, and information related to the existing spatial relationship may be applied to the remaining UL channels / RSs.

[0215] In this case, newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) for different UL channels / RSs, as well as information related to the existing spatial relationship, can also be configured in the UE. In this case, information related to a single spatial relationship can also be applied to a single UL channel / RS through higher-layer signaling (e.g., RRC configuration / reconfiguration).

[0216] In addition, in this case, when a newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) or information related to the existing spatial relationship is set for a UL channel / RS, a different spatial relationship can also be applied in the RRC reconfiguration.

[0217] Considering the UL TCI status and spatial relationship information expected to be adopted in future wireless communication systems, how the UE determines parameters related to UL transmit power control has not yet been studied. Failure to appropriately determine parameters related to UL transmit power control may result in reduced communication throughput.

[0218] Therefore, the inventors of the present invention have devised a method for appropriately determining parameters related to UL transmit power control.

[0219] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the respective embodiments and modes can be applied individually or in combination.

[0220] The TCI state may also be replaced with a TCI state or a QCL assumption, a QCL assumption, a spatial domain reception filter, a UE spatial domain reception filter, a spatial domain filter, a UE reception beam, a DL reception beam, a DL-RS, etc. RS of QCL type D, a DL-RS associated with QCL type D, a DL-RS with QCL type D, a source of a DL-RS, an SSB, and a CSI-RS may also be replaced with each other.

[0221] In the present disclosure, the TCI state may also be information related to the receive beam (spatial domain receive filter) indicated (set) to the UE (e.g., DL-RS, QCL type, cell to which the DL-RS is transmitted, etc.). The QCL assumption may also be information related to the receive beam (spatial domain receive filter) assumed by the UE (e.g., DL-RS, QCL type, cell to which the DL-RS is transmitted, etc.) based on the transmission or reception of an associated signal (e.g., PRACH).

[0222] In this disclosure, the terms "UL TCI state" and "UE transmit beam," "UL beam," "spatial relationship of UL TCI states," and "spatial relationship" may be used interchangeably. "UL beam" may also refer to the transmit beam of the PUCCH / PUSCH. "UL TCI," "UL TCI," and "UL-TCI" may also be used interchangeably.

[0223] In the present disclosure, TRP, panel, TRP ID, panel ID, CORESET group ID of CORESET for PDCCH from TRP or panel, CORESET pool index representing CORESET pool of PDCCH from TRP or panel, CORESET ID of CORESET representing PDCCH from TRP or panel, and other indexes corresponding to TRP or panel (DMRS port group ID, etc.) can also be replaced with each other.

[0224] In the present disclosure, SRS may also be replaced with at least one of aperiodic SRS (A-SRS), periodic SRS (P-SRS), and semi-persistent SRS (SP-SRS).

[0225] In this disclosure, "association" and "mapping" may be used interchangeably. In this disclosure, expressions such as "rXX" (e.g., r17) represent 3GPP release numbers (e.g., 3GPP Rel. 17), but may also be replaced with expressions corresponding to other release numbers (e.g., r18, r19, r20, etc.).

[0226] (Wireless Communication Method)

[0227] PUCCH Power Control in Rel.16

[0228] Figure 4 16 is a diagram showing the PUCCH spatial relationship information of Rel.16. Figure 4 As shown, PUCCH spatial relationship information (PUCCH-SpatialRelationInfo-r16) is set as an RRC parameter. PUCCH spatial relationship information (PUCCH-SpatialRelationInfo-r16) includes the ID of the PUCCH path loss reference RS (pucch-PathlossReferenceRS-Id-r16), the ID of the PUCCH transmit power offset P0 (p0-PUCCH-Id-r16), and the closed loop index (closedLoopIndex-r16). These are used for PUCCH power control.

[0229] Figure 5 16 is a diagram showing the PUCCH power control information of Rel.16. Figure 5 As shown, the PUCCH power control information (PUCCH-PowerControl) includes a P0 set (p0-Set) indicating P0-PUCCH and a path loss reference RS (pathlossReferenceRSs).

[0230] Furthermore, P0-PUCCH includes the P0-PUCCH ID (p0-PUCCH-Id) and the P0-PUCCH value (p0-PUCCH-Value). In other words, the PUCCH power control information indicates the association between the P0-PUCCH-ID and the P0-PUCCH value.

[0231] In addition, the PUCCH Path Loss Reference RS (PUCCH-PathlossReferenceRS) includes the PUCCH Path Loss Reference RS-ID (pucch-PathlossReferenceRS-Id) and the downlink reference signal (referenceSignal, SSB, or CSI-RS) used for PUCCH path loss estimation. In other words, the association between the PUCCH Path Loss Reference RS-ID and the downlink reference signal is indicated in the PUCCH power control information.

[0232] <First embodiment>

[0233] In the first embodiment, the configuration of PUCCH power control information within the framework of unified UL TCI (unified TCI, UL TCI) is described. The UE receives specific information, via higher-layer signaling (e.g., RRC), indicating the association (mapping) between an identifier (ID) representing spatial relationship information and parameters related to PUCCH transmit power control (PUCCH path loss reference RS / P0-PUCCH / closed-loop index). Based on the mapping between the spatial relationship information and the parameters related to PUCCH transmit power control, the UE determines parameters related to PUCCH transmit power and determines the PUCCH transmit power. The UE controls PUCCH transmission based on the determined PUCCH transmit power.

[0234] The “PUCCH path loss reference RS” in the first embodiment corresponds to q in equation (3): d "P0-PUCCH" corresponds to P in equation (3) O＿PUCCH，b，f，c (q u ). The “closed loop index” corresponds to l in equations (3) and (4).

[0235] In this disclosure, "PUCCH path loss reference RS" and "PUCCH path loss reference RS-ID" may be used interchangeably. "P0-PUCCH" and "P0-PUCCH-ID" may also be used interchangeably. "PUCCH-closed-loop index" and "closed-loop index" may also be used interchangeably.

[0236] [Method 1-1]

[0237] The UE may also receive specific information indicating the mapping of PUCCH spatial relation information (PUCCH spatial relation information identifier (ID)) and parameters related to PUCCH transmit power control (PUCCH path loss reference RS / P0-PUCCH / closed loop index) through higher layer signaling (e.g., RRC). The specific information may also include the PUCCH spatial relation information identifier and the parameters related to PUCCH transmit power control. The specific information may be a PUCCH power control information element (PUCCH-PowerControl information element) or a new information element that is different from the PUCCH power control information element and does not include a reference signal used in spatial relation.

[0238] Figure 6 1-1 is a diagram showing an example of PUCCH power control information elements in mode 1-1. Figure 6As shown, the PUCCH power control information (PUCCH-PowerControl-r17) as an RRC parameter includes UL-TCI-PUCCH mapping (ULTCI-PUCCH-mapping-r17) corresponding to the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17).

[0239] The ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17) contains the PUCCH spatial relationship information ID (spatialRelationInfoId-r17), the PUCCH path loss reference RS-ID (pucch-PathlossReferenceRS-Id), the P0-PUCCH ID (p0-PUCCH-Id), and the PUCCH closed loop index (pucch-closedLoopIndex). In other words, the PUCCH power control information element indicates the mapping between the PUCCH spatial relationship information and the PUCCH path loss reference RS / P0-PUCCH / closed loop index.

[0240] Figure 7 This is a diagram showing an example of the ULTCI-PUCCH mapping configuration information element in method 1-1. The ULTCI-PUCCH mapping configuration information element is different from the PUCCH power control information element and is an example of a new information element that does not include a reference signal used in a spatial relationship. Figure 7 As shown, the ULTCI-PUCCH mapping information (ULTCI-PUCCH-mapping-r17) corresponds to the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17). The information contained in the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17) is the same as Figure 6 The examples shown are the same.

[0241] The PUCCH spatial relationship information ID (spatialRelationInfoid-r17) can also be used to configure the spatial relationship between the reference RS (e.g., SSB / CSI-RS / SRS) and the target UL channel / RS (e.g., PUCCH / PUSCH / SRS / UL DMRS), indicating a unified (UL) spatial relationship configuration. The PUCCH spatial relationship information ID (spatialRelationInfoId-r17) can also be considered as a UL-TCI state configuration.

[0242] [Method 1-2]

[0243] The UE may also receive specific information (spatial relationship information) indicating the mapping of an identifier (ID) representing the spatial relationship information and parameters related to PUCCH transmit power control (PUCCH path loss reference RS / P0-PUCCH / closed loop index) through higher layer signaling (e.g., RRC). The spatial relationship information may also include an identifier of the spatial relationship information and a PUCCH path loss reference RS-ID / P0-PUCCH-ID / PUCCH-closed loop index. The specific information (spatial relationship information) in method 1-2 includes, for example, information indicating a downlink reference signal (referenceSignal) used in the spatial relationship and a downlink reference signal used in path loss estimation (pucch-PathlossReferenceRS-Config-r17) ( Figure 9 ).

[0244] Figure 8 1-2 is a diagram showing a first example of spatial relationship information. Figure 8 As shown in FIG1 , the spatial relationship information (SpatialRelationInfo-r17) includes the spatial relationship information ID (spatialRelationInfoId-r17), the PUCCH path loss reference RS-ID (pucch-PathlossReferenceRS-Id), the P0-PUCCH-ID (p0-PUCCH-Id), and the PUCCH-closed loop index (pucch-closedLoopIndex). That is, the spatial relationship information represents the mapping between the spatial relationship information ID and the parameters related to the PUCCH transmit power control. In addition, Figure 5 Similarly to the example shown, the PUCCH power control information may also indicate the mapping between the P0-PUCCH ID and the P0-PUCCH value and the mapping between the PUCCH path loss reference RS-ID and the reference signal.

[0245] Figure 9 : is a diagram showing a second example of spatial relationship information in method 1-2. Figure 9As shown, the spatial relationship information (SpatialRelationInfo-r17) includes the spatial relationship information ID (SpatialRelationInfoId-r17), PUCCH path loss reference RS configuration information (pucch-PathlossReferenceRS-Config-r17), the P0-PUCCH value (p0-PUCCH-value), and the PUCCH closed loop index (pucch-closedLoopIndex). In other words, the spatial relationship information represents the mapping between the spatial relationship information ID and parameters related to PUCCH transmit power control.

[0246] In addition, spatial relationship information is used in PUSCH / PUCCH / SRS, and the set power control parameters (PUCCH path loss reference RS, P0-PUCCH, closed-loop index) can also be applied only in PUCCH.

[0247] [UE Operation]

[0248] In the PUCCH power control of the first embodiment, when spatial relationship information is provided (configured), the UE can also obtain the mapping between the spatial relationship information (spatial relationship information ID) and the path loss reference RS / P0-PUCCH / closed loop index. When the spatial relationship information ID is configured / indicated for the PUCCH resource, the UE can also determine the PUCCH path loss reference RS / P0-PUCCH / closed loop index based on a specific mapping. Even when spatial relationship information is not transmitted, the UE can apply Rel.16 PUCCH power control.

[0249] According to the first embodiment, the UE can appropriately determine parameters related to the PUCCH transmission power, and thus can appropriately control the PUCCH transmission power and prevent a decrease in communication throughput.

[0250] PUSCH Power Control in Rel.16

[0251] Figure 10 FIG. 1 is a diagram showing an example of parameters related to power control of the PUSCH of Rel.16. Figure 10As shown, PUSCH power control information (PUSCH-PowerControl) and SRI-PUSCH power control information (SRI-PUSCH-PowerControl) are set as RRC parameters. SRI-PUSCH power information (SRI-PUSCH-PowerControl) includes SRI-PUSCH power control ID (sri-PUSCH-PowerControlId), SRI-PUSCH path loss reference RS-ID (sri-PUSCH-PathlossReferenceRS-Id), SRI-P0-PUSCH-α set ID (sri-PUSCH-AlphaSetId), and SRI-PUSCH-closed loop index (sri-PUSCH-ClosedLoopIndex). That is, the association between the PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed loop index is represented in the SRI-PUSCH power information.

[0252] In PUSCH power control, the UE determines the P0-PUSCH / α / path loss reference RS / closed loop index based on the SRI indicated in the UL scheduling DCI and the mapping of the RRC parameters P0-PUSCH / α / path loss reference RS / closed loop index. In the new unified framework, a new DCI field can also be used to indicate the spatial relationship of the PUSCH instead of the SRI. However, in this case, how to determine the PUSCH power control parameters becomes a problem.

[0253] <Second embodiment>

[0254] The UE receives DCI containing specific information different from the SRI and receives, through higher layer signaling, a mapping of the specific information to parameters related to uplink shared channel (PUSCH) transmit power control. Based on the specific information and mapping contained in the DCI, the UE determines the parameters used for PUSCH transmit power control. This specific information may be, for example, new configuration information (ULTCI) or an identifier for spatial relationship information. The UE uses the parameters used for PUSCH transmit power control to control PUCCH transmit power.

[0255] The parameters related to PUSCH transmit power control are PUSCH path loss reference RS / P0-PUSCH / α(Alpha) / closed loop index. PUSCH path loss reference RS corresponds to q in equation (1). d P0-PUSCH corresponds to P in formula (1) O＿PUSCH，b，f，c (j). α corresponds to α in formula (1) b，f，c(j). The closed-loop index corresponds to l in equation (1).

[0256] In this disclosure, "PUSCH path loss reference RS-ID" and "PUSCH path loss reference RS" can also be used interchangeably. "P0-PUSCH-α set ID" and "P0-PUSCH / α" can also be used interchangeably. "PUSCH-closed loop index" and "closed loop index" can also be used interchangeably.

[0257] [Method 2-1]

[0258] The UE receives DCI containing the ULTCI as specific information different from the SRI and determines the parameters used for PUSCH transmit power control based on the ULTCI and a mapping based on higher-layer signaling. This mapping maps the SRI-PUSCH power control ID transmitted via higher-layer signaling (e.g., RRC) to parameters related to PUSCH transmit power control. The ULTCI in the DCI corresponds to the SRI-PUSCH power control ID in higher-layer signaling (RRC).

[0259] The mapping between the SRI-PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed-loop index can also be set as an RRC parameter, similar to the PUSCH power control in Rel.16 described above. This setting can also represent the mapping between a new indication in the DCI (e.g., ULTCI) and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed-loop index. In other words, the new indication in the DCI (e.g., ULTCI) and the SRI-PUSCH power control ID can also correspond.

[0260] Furthermore, the UE may also determine the parameters (PUSCH path loss reference RS / P0-PUSCH / α / closed loop index) used in PUSCH transmit power control based on the new indication in the DCI (e.g., ULTCI) and the configured mapping. For example, when ULTCI = 0, the UE may also apply the PUSCH path loss reference RS / P0-PUSCH / α / closed loop index mapped to SRI-PUSCH power control ID = 0.

[0261] Upon receiving spatial relationship information and SRI-PUSCH power control information, the UE obtains the mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the codepoint of the ULTCI in the DCI. If the ULTCI is indicated in the DCI scheduling the PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the ULTCI as the parameter to use for PUSCH transmit power control. Even if spatial relationship information is not transmitted, the UE may apply the PUSCH power control described in Rel.16.

[0262] [Method 2-2]

[0263] The UE receives DCI containing the ULTCI as specific information different from the SRI and determines the parameters used for PUSCH transmit power control based on the ULTCI and mapping. This mapping maps the ULTCI-PUSCH power control ID sent via higher layer signaling (RRC) to parameters related to PUSCH transmit power control. The ULTCI in the DCI corresponds to the ULTCI-PUSCH power control ID in the RRC.

[0264] In method 2-2, it is assumed that a new configuration based on RRC is applied to indicate the mapping between the ULTCI in the DCI and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / closed loop index.

[0265] Figure 11 This figure shows an example of parameters related to PUSCH power control in method 2-2. The ULTCI-PUSCH power information (ULTCI-PUSCH-PowerControl-r17), an RRC parameter, includes a ULTCI-PUSCH power control ID (ULTCI-PUSCH-PowerControlId-r17), a ULTCI-PUSCH path loss reference RS-ID (ULTCI-PUSCH-PathlossReferenceRS-Id), a ULTCI-P0-PUSCH-alpha set ID (ULTCI-PUSCH-AlphaSetId), and a ULTCI-PUSCH-ClosedLoopIndex. Specifically, the ULTCI-PUSCH power information shows the mapping between the PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-alpha set ID / closed loop index. The ULTCI in the DCI corresponds to the PUSCH power control ID.

[0266] The UE may also determine the PUSCH path loss reference RS / P0-PUSCH / α / closed loop index based on the ULTCI in the DCI and the configured mapping. For example, when ULTCI = 0, the UE may also apply the PUSCH path loss reference RS / P0-PUSCH / α / closed loop index mapped to ULTCI-PUSCH power control ID = 0.

[0267] Upon receiving spatial relationship information and ULTCI-PUSCH power information, the UE obtains the mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the ULTCI codepoint in the DCI. If the ULTCI is indicated in the DCI scheduling the PUSCH, the UE may also determine the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the ULTCI as the parameter used for PUSCH transmit power control. Even if spatial relationship information is not transmitted, the UE may apply the PUSCH power control described in Rel.16.

[0268] [Method 2-3]

[0269] The UE receives DCI containing a spatial relationship information identifier (spatial relationship information ID) as specific information and determines parameters used for PUSCH transmit power control based on the spatial relationship information ID and a mapping transmitted via higher-layer signaling. This mapping maps the spatial relationship information ID transmitted via higher-layer signaling (RRC) to parameters related to PUSCH transmit power control. The spatial relationship information ID in the DCI corresponds to the spatial relationship information ID in higher-layer signaling (RRC).

[0270] The mapping between the spatial relationship information ID transmitted by higher layer signaling and the parameters related to PUSCH transmission power control can be included in the PUSCH power control information element (PUSCH-PowerControl information element) or in a new information element different from the PUSCH power control information element.

[0271] Figure 12 : is a diagram showing an example of PUSCH power control information element in mode 2-3. Figure 12 As shown, the PUSCH power control information (PUSCH-PowerControl-r17) as the RRC parameter includes the ULTCI-PUSCH mapping (ULTCI-PUSCH-mapping-r17) corresponding to the ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17).

[0272] The ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17) contains the spatial relationship information ID (spatialRelationInfoId-r17), the PUSCH path loss reference RS-ID (PUSCH-PathlossReferenceRS-Id), the P0-PUSCH-alpha set ID (P0-PUSCH-AlphaSetId), and the PUSCH-closed loop index (PUSCH-ClosedLoopIndex). Specifically, the PUSCH power control information element indicates the mapping between the spatial relationship information ID and the parameters used for PUSCH transmit power control (PUSCH path loss reference RS / P0-PUSCH / alpha / closed loop index).

[0273] Figure 13 This is a diagram showing an example of the ULTCI-PUSCH mapping configuration information element in mode 2-3. The ULTCI-PUSCH mapping configuration information element is an example of a new information element different from the PUSCH power control information element. Figure 13 As shown, the ULTCI-PUSCH mapping information (ULTCI-PUSCH-mapping-r17) corresponds to the ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17). The information contained in the ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17) is the same as Figure 12 The examples shown are the same.

[0274] Upon receiving spatial relationship information and ULTCI-PUSCH power information, the UE obtains the mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the spatial relationship information ID. If the spatial relationship information ID is indicated in the DCI scheduling the PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the spatial relationship information ID as the parameter used for PUSCH transmit power control. Even if spatial relationship information is not transmitted, the UE may apply the PUSCH power control method of Rel.16.

[0275] In mode 2-3, the UE may also support PUSCH transmission for multiple TRPs based on a single DCI (S-DCI, a DCI indicating multiple TCI states) (for example, PUSCH transmission for multiple TRPs in Rel.16). To support PUSCH transmission for multiple TRPs, the UE may also map the ULTCI codepoint in the DCI to multiple spatial relation information (spatial relation information IDs). In mode 2-3, the ULTCI codepoint in the DCI can be easily mapped to multiple power control parameters.

[0276] According to the second embodiment, the UE can appropriately determine parameters related to the PUSCH transmission power, and thus can appropriately control the PUSCH transmission power and prevent a decrease in communication throughput.

[0277] SRS Power Control in Rel.16

[0278] Figure 14 FIG. 1 is a diagram showing an example of parameters related to power control of SRS of Rel.16. Figure 14 As shown, in the RRC parameters, an SRS resource set (SRS-ResourceSet) includes α (alpha), P0, path loss reference RS (pathlossReferenceRS), and SRS power control adjustment state (srs-PowerControlAdjustmentStates) as parameters related to SRS power control. Rel.16 SRS power control can also be applied to the new unified ULTCI framework.

[0279] The Path Loss Reference RS for the UL channel / RS is associated with the QCL / TCI state / spatial relationship of the UL channel / RS. In the unified UL TCI framework, the Path Loss Reference RS is set as part of the unified spatial relationship. The Path Loss Reference RS is used for PUCCH / PUSCH / SRS power control.

[0280] <Third embodiment>

[0281] The UE receives information indicating the mapping between the spatial relationship information identifier (spatial relationship information ID) and the path loss reference signal (Path Loss Reference RS) through higher layer signaling. Based on the indicated spatial relationship information ID and the mapping, the UE determines the Path Loss Reference RS to be used for transmit power control. The UE uses the determined Path Loss Reference RS to control the transmit power of the PUSCH / PUCCH / SRS.

[0282] In the present disclosure, "spatial relationship," "spatial relationship information," and "spatial relationship information ID" may also be used interchangeably. "Path loss reference RS," "path loss reference RSID," "path loss reference signal (path loss RS)," "path loss reference signal ID (path loss RSID)," and "PL-RS" may also be used interchangeably.

[0283] The path loss reference RS in the third embodiment corresponds to q in equations (1), (3), and (5): d That is, the path loss reference RS is a parameter used in PUCCH / PUSCH / SRS transmission power control.

[0284] [Method 3-1]

[0285] In Example 3-1, information indicating the mapping between the spatial relationship information ID and the path loss reference signal (Path Loss Reference RS) is included in the spatial relationship information (SpatialRelationInfo-r17) of the RRC parameter. That is, the UE receives the spatial relationship information including the information indicating the mapping.

[0286] Figure 15A as well as Figure 15B This is a diagram showing the setting of the path loss reference RS in method 3-1. Figure 15A This figure shows the path loss reference RS configuration information in method 3-1. The path loss reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17), a new information element (RRC parameter), includes the path loss reference RS ID (PathlossReferenceRS-Id-r17) corresponding to the path loss reference RS (PathlossReferenceRS-r17).

[0287] Figure 15B is a diagram showing the spatial relationship information in method 3-1. Figure 15B As shown, the spatial relationship information as an RRC parameter includes the spatial relationship information ID (spatialRelationInfoId-r17) and the path loss reference RSID (PathlossReferenceRS-Id-r17). In other words, it shows the mapping between the spatial relationship information (spatial relationship information ID) and the path loss reference RS (PathlossReferenceRSID).

[0288] [Method 3-2]

[0289] In method 3-2, information indicating the mapping between the spatial relationship information ID and the path loss reference signal (Path Loss Reference RS) is included in the spatial relationship information (SpatialRelationInfo-r17) of the RRC parameter. That is, the UE receives the spatial relationship information including the information indicating the mapping.

[0290] Figure 16 is a diagram showing the spatial relationship information in mode 3-2. Figure 16 As shown, the spatial relationship information (SpatialRelationInfo-r17) as an RRC parameter includes the spatial relationship information ID (spatialRelationInfoId-r17) and the path loss reference RS configuration information (PathlossReferenceRS-Config-r17). In other words, by directly configuring the path loss reference RS in the spatial relationship information, the mapping between the spatial relationship information ID and the path loss reference RS is indicated.

[0291] [Method 3-3]

[0292] In method 3-3, information indicating the mapping between the spatial relationship information ID and the path loss reference signal (Path Loss Reference RS) is included in the ULTCI Path Loss Reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17), a new RRC parameter. The Path Loss Reference RS can also be replaced with the Path Loss RS. Specifically, the mapping is included in the ULTCI Path Loss RS (ULTCI-PLRS-r17) indicated by the ULTCI Path Loss Reference RS configuration information.

[0293] Figure 17 3-3 is a diagram showing the ULTCI path loss reference RS setting information in mode 3-3. Figure 17 As shown, the ULTCI path loss reference RS configuration information, which is a new RRC parameter, includes a ULTCI path loss RS (ULTCI-PLRS-r17) corresponding to the ULTCI path loss RS mapping (ULTCI-PLRS-mapping-r17). Furthermore, the ULTCI path loss RS (ULTCI-PLRS-r17) includes a spatial relationship information ID (spatialRelationInfoId-r17) and a path loss reference RS ID (PathlossReferenceRS-Id-r17). In other words, the ULTCI path loss reference RS configuration information indicates the mapping between the spatial relationship information ID and the path loss reference RS.

[0294] [Method 3-4]

[0295] In method 3-4, information indicating the mapping between the spatial relationship information ID and the path loss reference signal (Path Loss Reference RS) is included in the ULTCI Path Loss RS mapping configuration information (ULTCI-PLRS-mapping-config-r17), which is a new RRC parameter. The Path Loss Reference RS can also be replaced by the Path Loss RS.

[0296] Figure 18A This is a diagram showing the ULTCI path loss reference RS setting information in method 3-4. Figure 18A The ULTCI path loss reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17) shown is a new RRC parameter, including a path loss reference RS (PathlossReferenceRS-r17).

[0297] Figure 18B This is a diagram showing the ULTCI path loss RS mapping setting information in method 3-4. Figure 18B The ULTCI path loss RS mapping configuration information (ULTCI-PLRS-mapping-config-r17), shown as a new RRC parameter, includes a ULTCI path loss RS (ULTCI-PLRS-r17) corresponding to the ULTCI path loss RS mapping (ULTCI-PLRS-mapping-r17). Furthermore, the ULTCI path loss RS (ULTCI-PLRS-r17) includes a spatial relationship information ID (spatialRelationInfoId-r17) and a path loss reference RS ID (PathlossReferenceRS-Id-r17). In other words, the ULTCI path loss RS mapping configuration information indicates the mapping between the spatial relationship information ID and the path loss reference RS.

[0298] [UE operation]

[0299] During PUCCH / SRS / PUSCH power control, upon receiving spatial relationship information (spatialRelationInfo-r17), the UE obtains a mapping between the spatial relationship information ID and the path loss reference RS (path loss reference RS ID). When a spatial relationship information ID for PUCCH resources / SRS resources / PUSCH transmission is configured (indicated), the UE determines the path loss reference RS based on the spatial relationship information ID and the obtained mapping. The spatial relationship information ID is configured (indicated) in at least one of a MAC CE and a DCI, for example, from a list configured via RRC.

[0300] Furthermore, at least a portion of the first and third embodiments relates to determination of a path loss reference RS for PUCCH power control. At least a portion of the second and third embodiments relates to determination of a path loss reference RS for PUSCH power control.

[0301] According to the third embodiment, the UE can appropriately determine the path loss reference RS used in PUCCH / PUSCH / SRS transmission power control, thereby being able to appropriately control the PUCCH / PUSCH / SRS transmission power and prevent a decrease in communication throughput.

[0302] <Other>

[0303] In this disclosure, "SpatialRelationInfo-r17" may be replaced with "UL TCI-state r17" or "UL beam management r17". The processing in this disclosure may also be applied only when the UE reports capability information supporting the TCI state (UL beam management of Rel.17). A single report may be made for all channels, or a report may be made for each channel (e.g., PUCCH / PUSCH / SRS).

[0304] Cross-channel UL TCI configuration can also be allowed. For example, the UL TCI ID corresponding to the UL TCI configuration configured in a certain channel (SRS / PUCCH / PUSCH) can also be configured as the UL TCI for other channels (SRS / PUCCH / PUSCH). Channels can also be replaced with signals.

[0305] Cross-BWP / CC configuration of UL TCI may also be allowed. For example, a UL TCI ID corresponding to a UL TCI configuration configured in a certain BWP / CC (e.g., BWP#1 / CC#1) may also be configured for another BWP / CC (e.g., BWP#2 / CC#2).

[0306] There are two interpretations of UL TCI in this disclosure: "Replace" or "Append" the current spatial relationship. In the case where UL TCI replaces the current spatial relationship, UL TCI needs to include power control.

[0307] When the UL TCI is appended to the current spatial relation, the UL TCI does not need to include a power control indicator. When the UL TCI is configured using a power control indicator, the UE assumes this indicator for high-speed transmit power control (TPC). Otherwise, the UE may assume Rel. 15 / 16 for TPC (the current spatial relation mechanism for controlling TPC).

[0308] (Wireless Communication System)

[0309] The following describes a configuration of a wireless communication system according to an embodiment of the present disclosure. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof.

[0310] Figure 19 This figure shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), or the like.

[0311] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0312] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0313] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0314] The wireless communication system 1 may also include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are deployed within the macrocell C1 and form small cells C2 that are narrower than the macrocell C1. User terminals 20 may also be located within at least one of the cells. The configuration and number of cells and user terminals 20 are not limited to those shown in the figure. Hereinafter, when not distinguishing between base stations 11 and 12, they are collectively referred to as base stations 10.

[0315] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0316] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0317] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0318] Multiple base stations 10 can also be connected by wired (for example, optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (for example, NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 equivalent to the upper station can also be called an integrated access backhaul (IAB) donor, and the base station 12 equivalent to the relay station (relay) can also be called an IAB node.

[0319] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0320] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0321] In the wireless communication system 1, a radio access scheme based on orthogonal frequency division multiplexing (OFDM) 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), or single carrier frequency division multiple access (SC-FDMA) may be used.

[0322] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0323] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0324] In addition, as uplink channels, the wireless communication system 1 can also use an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc.

[0325] User data, higher-layer control information, and system information blocks (SIBs) are transmitted via the PDSCH. User data, higher-layer control information, and the like can also be transmitted via the PUSCH. Furthermore, the Master Information Block (MIB) can also be transmitted via the PBCH.

[0326] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.

[0327] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0328] In PDCCH detection, a control resource set (CORESET) and a search space can also be used. A CORESET corresponds to the resources for searching for DCI. A search space corresponds to the search area and search method for PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space settings.

[0329] A search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," and "CORESET setting" in this disclosure may be used interchangeably.

[0330] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted via the PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted via the PRACH.

[0331] In the present disclosure, downlink, uplink, etc. may be expressed without the word "link." Furthermore, various channels may be expressed without the word "physical" at the beginning.

[0332] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0333] For example, a synchronization signal may be at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block containing SSs (PSS, SSS) and PBCHs (and DMRS for PBCHs) may also be referred to as an SS / PBCH block or an SS block (SSB). Furthermore, SSs and SSBs may also be referred to as reference signals.

[0334] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0335] (Base Station)

[0336] Figure 20This figure shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface (transmission line interface) 140. Furthermore, more than one of each of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission path interface 140 may be provided.

[0337] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0338] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0339] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. It may also control transmission and reception, measurement, etc., using the transmission and reception unit 120, the transmission and reception antennas 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting up, releasing, etc.) of communication channels, manage the status of the base station 10, manage radio resources, etc.

[0340] The transceiver unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0341] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0342] The transmitting and receiving antenna 130 can be formed of an antenna described based on common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0343] The transmitting and receiving unit 120 may also transmit the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the aforementioned uplink channel, uplink reference signal, etc.

[0344] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmit beam and a receive beam.

[0345] The sending and receiving unit 120 (sending processing unit 1211) can also perform processing on the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (for example, RLC retransmission control), the Medium Access Control (MAC) layer (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0346] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0347] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0348] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 130 .

[0349] The transmitting and receiving unit 120 (receiving processing unit 1212) can also apply receiving processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0350] The transmitting and receiving unit 120 (measuring unit 123) may also perform measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., Reference Signal Received Power (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 also be output to the control unit 110.

[0351] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0352] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0353] The transmitting / receiving unit 120 may also transmit specific information indicating mapping between an identifier of the spatial relationship information and parameters related to PUCCH transmit power control through higher layer signaling.

[0354] The control unit 110 may control the reception of the PUCCH to which the parameters related to the PUCCH transmission power determined based on the mapping are applied.

[0355] The transmitting and receiving unit 120 may also transmit downlink control information (DCI) including specific information different from the measurement reference signal resource identifier (SRI), and transmit a mapping of the specific information and parameters related to uplink shared channel (PUSCH) transmission power control through higher layer signaling.

[0356] The control unit 110 may control the reception of the PUSCH to which the parameters used for PUSCH transmission power control determined based on the specific information and the mapping are applied.

[0357] The transmitting and receiving unit 120 may also transmit information indicating a mapping between an identifier of the spatial relationship information and a path loss reference signal through higher layer signaling.

[0358] The control unit 110 may also control reception of a signal in which the path loss reference signal is applied to transmit power control, the path loss reference signal being determined based on the identifier of the indicated spatial relationship information and the mapping.

[0359] (User Terminal)

[0360] Figure 21 This figure shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Furthermore, more than one of each of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0361] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0362] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0363] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmission and reception unit 220.

[0364] The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0365] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit or may be composed of a transmitting unit and a receiving unit. The transmitting unit may also be composed of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0366] The transmitting and receiving antenna 230 can be formed of an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0367] The transmitting and receiving unit 220 may also receive the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the aforementioned uplink channel, uplink reference signal, etc.

[0368] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0369] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0370] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0371] In addition, whether or not to apply DFT processing may also be based on the transform precoding setting. For a certain channel (e.g., PUSCH), if transform precoding is valid (enabled), the transmitting / receiving unit 220 (transmitting processing unit 2211) may perform DFT processing as the aforementioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting / receiving unit 220 (transmitting processing unit 2211) may perform DFT processing as the aforementioned transmission processing without performing DFT processing.

[0372] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0373] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 230 .

[0374] The transmitting and receiving unit 220 (receiving processing unit 2212) can also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0375] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to received signals. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signals. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0376] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0377] The transmitting / receiving unit 220 may also receive specific information indicating a mapping between an identifier of spatial relation information and parameters related to uplink control channel (PUCCH) transmit power control via higher layer signaling. The specific information may also be a PUCCH power control information element. The specific information may also be different from the PUCCH power control information element and may not include information on reference signals used for spatial relation. The specific information may also include information indicating a downlink reference signal used for spatial relation and a downlink reference signal used for path loss estimation.

[0378] The control unit 210 may also determine parameters related to PUCCH transmission power based on the mapping.

[0379] The transmitting and receiving unit 220 may also receive downlink control information (DCI) including specific information different from the sounding reference signal resource identifier (SRI), and receive a mapping of the specific information to parameters related to uplink shared channel (PUSCH) transmit power control through higher layer signaling. The specific information may also be an uplink transmission configuration indicator (ULTCI). The specific information may also be an identifier of spatial relationship information.

[0380] The control unit 210 may determine parameters used for PUSCH transmission power control based on the specific information and the mapping.

[0381] The transmitting and receiving unit 220 may also receive information indicating a mapping between an identifier of the spatial relationship information and a path loss reference signal through higher layer signaling. The transmitting and receiving unit 220 may also receive the spatial relationship information including information indicating the mapping. The transmitting and receiving unit 220 may also receive uplink transmission configuration indication (ULTCI) path loss reference signal configuration information including information indicating the mapping.

[0382] The control unit 210 may also determine the path loss reference signal used for transmit power control based on the identifier of the indicated spatial relationship information and the mapping.

[0383] (Hardware Structure)

[0384] In addition, the block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0385] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any of them are as described above, and the implementation method is not particularly limited.

[0386] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 22 This figure shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. The base station 10 and user terminal 20 described above can also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0387] In addition, in this disclosure, the terms such as device, circuit, equipment, section, and unit are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or may not include some of the devices.

[0388] For example, although only one processor 1001 is shown, multiple processors may be provided. Furthermore, processing may be performed by a single processor, or by two or more processors simultaneously, sequentially, or using other methods. Furthermore, processor 1001 may be implemented using more than one chip.

[0389] Regarding the various functions in the base station 10 and the user terminal 20, for example, they are achieved by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0390] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, a computing device, registers, etc. For example, at least a portion of the aforementioned control unit 110 (210) and the transmitting and receiving unit 120 (220) may also be implemented by the processor 1001.

[0391] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and performs various processes based on them. As a program, a program that causes a computer to perform at least a portion of the operations described in the above embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated by the processor 1001, and the other functional blocks can also be implemented similarly.

[0392] The memory 1002 may also be a computer-readable recording medium, for example, comprised of at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 may store executable programs (program code), software modules, etc., for implementing the wireless communication method according to an embodiment of the present disclosure.

[0393] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, or a key drive), a magnetic stripe, a database, a server, or other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0394] The communication device 1004 is hardware (a transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like. To implement at least one of frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may also include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. For example, the aforementioned transmitting and receiving unit 120 (220), transmitting and receiving antenna 130 (230), and the like may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be implemented by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0395] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, light emitting diode (LED) lamp, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrated (e.g., a touch panel).

[0396] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0397] Furthermore, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and may use such hardware to implement part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0398] (Variation)

[0399] In addition, the terms described in this disclosure and the terms required for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, or may be referred to as a pilot, pilot signal, etc. depending on the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, frequency carrier, carrier frequency, etc.

[0400] A radio frame can also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) that constitute a radio frame can also be called a subframe. Furthermore, a subframe can also be composed of one or more time slots in the time domain. A subframe can also be a fixed time length (e.g., 1 ms) that is independent of the parameter set (numerology).

[0401] Here, a parameter set may also refer to communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set may also represent at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, radio frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, and the like.

[0402] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0403] A time slot may also contain multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as PDSCH (PUSCH) mapping type B.

[0404] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units used for signal transmission. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective equivalents. Furthermore, the terms frame, subframe, time slot, mini-time slot, and symbol may be used interchangeably in this disclosure.

[0405] For example, a subframe can be called a TTI, multiple consecutive subframes can be called a TTI, and a slot or a mini-slot can be called a TTI. That is, at least one of a subframe and a TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Furthermore, the unit representing a TTI can be called a slot, a mini-slot, or the like, rather than a subframe.

[0406] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules each user terminal by allocating radio resources (such as the frequency bandwidth and transmit power available to each user terminal) in TTI units. The definition of TTI is not limited to this.

[0407] The TTI may also be a unit of time for transmitting channel-coded data packets (transport blocks), code blocks, code words, etc., and may also be a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is given, the time interval (e.g., the number of symbols) to which the transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

[0408] In addition, when a time slot or a mini-time slot is called a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini-time slots) that constitute the minimum time unit of scheduling can also be controlled.

[0409] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a subslot, a time slot, etc.

[0410] In addition, long TTI (for example, normal TTI, subframe, etc.) can also be replaced by TTI with a time length exceeding 1ms, and short TTI (for example, shortened TTI, etc.) can also be replaced by TTI with a TTI length smaller than long TTI and greater than 1ms.

[0411] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it may also include one or more consecutive subcarriers (subcarriers). The number of subcarriers included in an RB may be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0412] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks.

[0413] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, and the like.

[0414] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0415] A Bandwidth Part (BWP) (also referred to as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) used for a particular parameter set within a particular carrier. Common RBs can also be identified by their index relative to the common reference point of the carrier. PRBs can also be defined within a BWP and numbered within that BWP.

[0416] 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.

[0417] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive specific signals / channels outside of the activated BWP. In addition, the terms "cell," "carrier," and the like in this disclosure may be replaced with "BWP."

[0418] The above-mentioned structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, various modifications may be made to the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length.

[0419] Furthermore, the information and parameters described in this disclosure may be expressed as absolute values, relative values relative to a specific value, or other corresponding information. For example, wireless resources may be indicated by specific indexes.

[0420] The names used for parameters, etc. in this disclosure are not intended to be limiting in any respect. Furthermore, the mathematical formulas for these parameters may differ from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not intended to be limiting in any respect.

[0421] Information, signals, and the like described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, and the like that may be referred to throughout the foregoing description may also be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0422] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0423] Input and output information, signals, etc. may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or appended. Output information, signals, etc. may also be deleted. Input information, signals, etc. may also be sent to other devices.

[0424] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0425] In addition, 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. In addition, RRC signaling may also be referred to as RRC message, for example, RRC Connection Setup message, RRC Connection Reconfiguration message, etc. In addition, MAC signaling may also be notified using MAC Control Element (CE), for example.

[0426] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0427] The determination can be made by a value represented by a bit (0 or 1), a true or false value (Boolean value) represented by true (true) or false (false), or by comparing numerical values (for example, comparing with a specific value).

[0428] The term “software” or “firmware” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, sub-programs, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, or the like.

[0429] Furthermore, software, instructions, information, and the like may also be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0430] The terms "system" and "network" used in this disclosure can be used interchangeably. "Network" may also refer to devices included in the network (eg, base stations).

[0431] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)" "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0432] In this disclosure, terms such as "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP))", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" are used interchangeably. In some cases, a base station may be referred to as a macro cell, small cell, femto cell, or pico cell.

[0433] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entire coverage area of at least one of a base station and a base station subsystem that provides communication services within that coverage area.

[0434] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (UE)”, and “terminal” can be used interchangeably.

[0435] The mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client, or several other appropriate terms.

[0436] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. Furthermore, at least one of the base station and the mobile station may also be a device mounted on a mobile object, a mobile object itself, etc. The mobile object may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile object that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0437] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by communication between multiple user terminals (for example, which may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be configured such that the user terminal 20 has the functions of the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0438] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0439] In the present disclosure, actions are assumed to be performed by a base station, and sometimes, depending on the circumstances, by its upper node. Obviously, in a network including one or more network nodes including a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME)), a Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0440] The various methods / implementations described in this disclosure may be used individually or in combination, and may be switched between them during execution. Furthermore, the processing procedures, sequences, flow charts, and the like of the various methods / implementations described in this disclosure may be reversed as long as they do not conflict. For example, the elements of various steps described in this disclosure are presented in an illustrative order, but are not limited to the specific order presented.

[0441] The various modes and embodiments described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB)), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on these. In addition, multiple systems can also be combined for application (for example, LTE or LTE-A, combined with 5G, etc.).

[0442] The phrase “based on” used in this disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0443] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily define the quantity or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, reference to a first and a second element does not imply that only two elements may be used or that the first element must in some way take precedence over the second element.

[0444] The term "determining" as used in this disclosure may encompass a variety of actions. For example, "determining" may also include judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, etc. as performing a "determination."

[0445] In addition, "judgment (decision)" can also be a situation where receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0446] Furthermore, "judgment (decision)" can also refer to situations where resolving, selecting, choosing, establishing, comparing, etc. can be considered as "judgment (decision)". In other words, "judgment (decision)" can also refer to situations where certain actions can be considered as "judgment (decision)".

[0447] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0448] The "maximum transmit power" recorded in this disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0449] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between the two elements being "connected" or "coupled." The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be replaced by "access."

[0450] In the present disclosure, when two elements are connected, it is possible to consider using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples to be "connected" or "combined" with each other.

[0451] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other." Alternatively, the term may also mean "A and B are each different from C." Terms such as "separate" and "bound" may also be interpreted in the same way as "different."

[0452] When used in this disclosure, "include," "including," and variations thereof have the same inclusive meaning as the term "comprising." Furthermore, the term "or" used in this disclosure does not mean an exclusive or.

[0453] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure may also include a case where the noun following the article is in a plural form.

[0454] While the inventions disclosed herein have been described in detail above, it will be apparent to those skilled in the art that the inventions disclosed herein are not limited to the embodiments described herein. The inventions disclosed herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the descriptions in this disclosure are for illustrative purposes only and are not intended to limit the inventions disclosed herein in any way.

Claims

1. A terminal comprising: A sending unit, reporting capability information of supporting an uplink (UL) transmission configuration indication state (TCI state); a receiving unit that receives, through higher layer signaling, mapping information between an identifier indicating a UL TCI state and parameters related to a UL control channel, namely, a PUCCH transmit power control; and a control unit that, when the capability information is reported, determines parameters related to the PUCCH transmit power based on the mapping; and, when the capability information is not reported, determines parameters related to the PUCCH transmit power based on PUCCH spatial relationship information. The information indicating the mapping includes information indicating a downlink reference signal (RS) used for spatial relationship and a downlink RS used for path loss estimation, The PUCCH spatial relationship information includes an identifier and a closed-loop index of a PUCCH path loss reference RS.

2. A wireless communication method, which is a wireless communication method of a terminal, comprising: The step of reporting capability information supporting uplink (UL) transmission setting indication state (TCI state); The step of receiving, through higher layer signaling, information on mapping an identifier indicating a UL TCI state and parameters related to a UL control channel, i.e., a PUCCH transmit power control; and determining parameters related to the PUCCH transmit power based on the mapping if the capability information is reported, and determining parameters related to the PUCCH transmit power based on PUCCH spatial relationship information if the capability information is not reported, The information indicating the mapping includes information indicating a downlink reference signal (RS) used for spatial relationship and a downlink RS used for path loss estimation, The PUCCH spatial relationship information includes an identifier and a closed-loop index of a PUCCH path loss reference RS.

3. A base station comprising: A receiving unit receives capability information supporting an uplink (UL) transmission configuration indication state (TCI) state; a transmitting unit, which transmits, through higher layer signaling, information indicating a mapping between an identifier indicating a UL TCI state and parameters related to a UL control channel, namely, a PUCCH transmit power control; and a control unit that, when the capability information is received, controls reception of a PUCCH to which the parameter related to the PUCCH transmit power determined based on the mapping is applied, and, when the capability information is not received, controls reception of the PUCCH to which the parameter related to the PUCCH transmit power determined based on the PUCCH spatial relationship information is applied, The information indicating the mapping includes information indicating a downlink reference signal (RS) used for spatial relationship and a downlink RS used for path loss estimation, The PUCCH spatial relationship information includes an identifier and a closed-loop index of a PUCCH path loss reference RS.

4. A system having a terminal and a base station, The terminal has: A sending unit, reporting capability information of supporting an uplink (UL) transmission configuration indication state (TCI state); a receiving unit, receiving, through higher layer signaling, information on mapping between an identifier indicating a UL TCI state and parameters related to a UL control channel, i.e., a PUCCH transmit power control; as well as a control unit that, when the capability information is reported, determines parameters related to the PUCCH transmit power based on the mapping; and, when the capability information is not reported, determines parameters related to the PUCCH transmit power based on PUCCH spatial relationship information. The base station has: a receiving unit, receiving the capability information; a sending unit, configured to send information indicating the mapping via the high-layer signaling; as well as a control unit that, when the capability information is received, controls reception of a PUCCH to which the parameter related to the PUCCH transmit power determined based on the mapping is applied, and, when the capability information is not received, controls reception of the PUCCH to which the parameter related to the PUCCH transmit power determined based on the PUCCH spatial relationship information is applied, The information indicating the mapping includes information indicating a downlink reference signal (RS) used for spatial relationship and a downlink RS used for path loss estimation, The PUCCH spatial relationship information includes an identifier and a closed-loop index of a PUCCH path loss reference RS.

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