Terminal, base station, system, and wireless communication method

Abstract

A terminal according to one aspect of the present disclosure includes: a receiving unit that receives downlink control information (DCI) including specific information different from a measurement reference signal resource identifier (SRI), and receives a mapping of the specific information and parameters related to physical uplink shared channel (PUSCH) transmission power control through higher layer signaling; and a control unit that determines parameters used in PUSCH transmission power control based on the specific information and the mapping. According to one aspect of the present disclosure, parameters related to UL transmission power control can be appropriately determined.

Description

Technical Field

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

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

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

[0004] Prior Art Documents

[0005] Non-Patent Documents

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

[0009] However, considering the UL TCI state, spatial relation information, etc. that are scheduled to be adopted in future wireless communication systems, no study has been conducted on how a UE determines parameters related to UL transmit power control. If the parameters related to UL transmit power control cannot be appropriately determined, there is a concern that the communication throughput may decrease.

[0010] Therefore, one of the objectives 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 transmit power control.

[0011] Means for Solving the Problem

[0012] A terminal according to one aspect of the present disclosure includes: a receiving unit that receives downlink control information (DCI) including specific information different from a measurement reference signal resource identifier (SRI), and receives a mapping of the specific information and parameters related to the transmit power control of a physical uplink shared channel (PUSCH) through higher layer signaling; and a control unit that determines parameters used in PUSCH transmit power control based on the specific information and the mapping.

[0013] Advantageous Effects of the Invention

[0014] According to one aspect of the present disclosure, parameters related to UL transmit power control can be appropriately determined. Description of the Drawings

[0015] Figure 1 FIG. is an example of an information element related to an existing TCI state.

[0016] Figure 2A FIG. is an example of existing PUCCH spatial relation information. Figure 2B FIG. is an example of existing SRS spatial relation information.

[0017] Figure 3A FIG. is an example of information related to the spatial relation between a reference RS and a target RS. Figure 3B FIG. is an example of information related to the spatial relation between a reference RS and a target RS.

[0018] Figure 4 It is a diagram showing the PUCCH spatial relation information of Rel. 16.

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

[0020] Figure 6 It is a diagram showing an example of the PUCCH power control information element in Mode 1-1.

[0021] Figure 7 It is a diagram showing an example of the ULTCI-PUCCH mapping setting information element in Mode 1-1.

[0022] Figure 8 It is a diagram showing the first example of the spatial relation information in Mode 1-2.

[0023] Figure 9 It is a diagram showing the second example of the spatial relation information in Mode 1-2.

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

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

[0026] Figure 12 It is a diagram showing an example of the PUSCH power control information element in Mode 2-3.

[0027] Figure 13 It is a diagram showing an example of the ULTCI-PUSCH mapping setting information element in Mode 2-3.

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

[0029] Figure 15A It is a diagram showing the path loss reference RS setting information in Mode 3-1. Figure 15B It is a diagram showing the spatial relation information in Mode 3-1.

[0030] Figure 16 It is a diagram showing the spatial relation information in Mode 3-2.

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

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

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

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

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

[0036] Figure 22 This is a diagram showing an example of the hardware structure of a base station and a user terminal according to an embodiment. Detailed Embodiment

[0037] (TCI, Spatial Relation, QCL)

[0038] In NR, it is being studied that: Based on the Transmission Configuration Indication state (TCI state), a UE controls the reception processing (e.g., at least one of reception, demapping, demodulation, decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, encoding) of at least one of a control signal and a channel (which may also be expressed as a signal / channel. In this disclosure, "A / B" may also be equivalently replaced with "at least one of A and B").

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

[0040] The TCI state refers to information related to the Quasi-Co-Location (QCL) of a signal / channel, and may also be referred to as a spatial reception parameter, Spatial Relation Information, etc. The TCI state may also be set for a UE for each channel or each signal.

[0041] QCL is an indicator representing the statistical properties of a signal / channel. For example, in the case where a certain signal / channel and other signal / channels are in a QCL relationship, it can also mean that among these multiple different signals / channels, it is possible to assume that at least one of Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same (being QCL for at least one of these).

[0042] In addition, the spatial Rx parameter can also correspond to the receiving beam of the UE (e.g., receiving analog beam), and the beam can also be determined based on spatial QCL. The QCL (or an element of at least one of the QCLs) in the present disclosure can also be replaced with sQCL (spatial QCL).

[0043] QCL can also be defined in multiple types (QCL types). For example, four different QCL types A - D can be set for which different parameters (or parameter sets) can be assumed to be the same. Hereinafter, these parameters (which can also be referred to as QCL parameters) are represented:

[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 Rx parameter.

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

[0049] When the UE assumes 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, it can also be referred to as a QCL assumption.

[0050] The UE can also determine at least one of the transmission beam (Tx beam) and the reception beam (Rx beam) of the signal / channel based on the TCI state or QCL assumption of the signal / channel.

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

[0052] In the present disclosure, the higher layer signaling can also be, for example, any one of radio resource control (RRC) signaling, medium access control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0053] The MAC signaling can also use, for example, MAC control elements (MAC CE), MAC protocol data units (PDU), etc. The broadcast information can also be, for example, the master information block (MIB), system information block (SIB), minimum system information (remaining minimum system information (RMSI)), other system information (OSI), etc.

[0054] The physical layer signaling can also be, for example, downlink control information (downlink control information (DCI)).

[0055] In addition, the channel / signal to which the TCI state is applied can also be referred to as the target channel / RS (target channel / RS), abbreviated as the target, etc., and the above other signals can also be referred to as reference RS (reference RS), abbreviated as the reference, etc.

[0056] A channel configured (designated) with a TCI state or a spatial relation may also 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 also be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a measurement reference signal (Sounding Reference Signal (SRS)), a CSI-RS for tracking (also referred to as a Tracking Reference Signal (TRS)), and a reference signal for QCL detection (also referred to as a 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, via higher layer signaling, configuration information (e.g., PDSCH-Config, tci-StatesToAddModList) that includes a list of information elements of TCI states.

[0060] The information element of the TCI state (the "TCI-state IE" of RRC) set by higher-layer signaling may also include the 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 is in 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 index of the RS (e.g., SSB index, 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.15 NR, as the TCI state of at least one of PDCCH and PDSCH, both the RS of QCL type A and the RS of QCL type D, or only the RS of QCL type A can be set for the UE.

[0062] In the case where the TRS is set as the RS of QCL type A, the TRS is assumed to be different from the demodulation reference signal (DMRS) of PDCCH or PDSCH, and the same TRS is transmitted periodically for a long time. The UE can measure the TRS and calculate the average delay, delay spread, etc.

[0063] The UE in which the TRS is set as the RS of QCL type A in the TCI state of the DMRS of PDCCH or PDSCH can assume that the parameters (average delay, delay spread, etc.) of QCL type A of the DMRS of PDCCH or PDSCH are the same as those of the TRS, and thus can obtain the type A parameters (average delay, delay spread, etc.) of the DMRS of PDCCH or PDSCH based on the measurement results of the TRS. When the UE performs channel estimation of at least one of PDCCH and PDSCH, it can use the measurement results of the TRS for more accurate channel estimation.

[0064] The UE set with the RS of QCL type D can use the RS of QCL type D to determine the UE receive beam (spatial domain receive filter, UE spatial domain receive filter).

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

[0066] Figure 1This is an example of a diagram showing information elements related to the existing TCI state. Using Figure 1 the information elements shown, the UE can also receive information related to the TCI state.

[0067] <Spatial relation for PUCCH>

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

[0069] The PUCCH configuration information can also include a list of PUCCH resource set information (e.g., PUCCH-ResourceSet) and a list of PUCCH spatial relation information (e.g., PUCCH-SpatialRelationInfo).

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

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

[0072] On the other hand, in the case where the UE has the above dedicated PUCCH resource configuration information (UE-specific uplink control channel structure, dedicated PUCCH resource structure) (after RRC establishment), the UE can also determine the PUCCH resource set according to the number of UCI information bits.

[0073] The UE can also determine a PUCCH resource (index) within the above PUCCH resource set (e.g., a cell-specific or UE-individual determined PUCCH resource set) based on at least one of the value of a specific field (e.g., PUCCH resource indicator field) within the downlink control information (Downlink Control Information (DCI)), such as DCI format 1_0 or 1_1 used in the scheduling of the PDSCH, the number of CCEs (N CCE ) in the control resource set (CORESET) for receiving the PDCCH carrying the DCI, and the index (n CCE，0 ) of the first (initial) CCE for receiving the PDCCH.

[0074] PUCCH spatial relation information (e.g., "PUCCH-spatialRelationInfo" of the RRC information element) can also represent multiple candidate beams (spatial domain filters) for PUCCH transmission. The PUCCH spatial relation information can also represent the spatial association between the RS (Reference Signal) and the PUCCH.

[0075] Figure 2A is a diagram showing an example of existing PUCCH spatial relation information. Using Figure 2A the information shown (e.g., RRC information element), the UE can also receive the PUCCH spatial relation information.

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

[0077] The list of PUCCH spatial relation information can also contain several elements (PUCCH spatial relation information IE (Information Element)). Each PUCCH spatial relation information can also contain, for example, at least one of the index (ID, e.g., pucch-SpatialRelationInfoId) of the PUCCH spatial relation information, the index (ID, e.g., servingCellId) of the serving cell, and information related to the RS (reference RS) that has a spatial relation with the PUCCH.

[0078] For example, the information related to the RS may also be an SSB index, a CSI-RS index (e.g., NZP-CSI-RS resource structure ID), or an SRS resource ID and the ID of the BWP. The SSB index, the CSI-RS index, and the SRS resource ID may also be associated with at least one of the beams, resources, and ports selected through the measurement of the corresponding RS.

[0079] When the spatial relation information related to the PUCCH is set to be more than one, the UE can also perform control based on the PUCCH spatial relation Activation / Deactivation MAC CE to activate one PUCCH spatial relation information with respect to one PUCCH resource at a certain time.

[0080] The PUCCH spatial relation Activation / Deactivation MAC CE of Rel.15 NR is expressed by a total of three octets (8 bits × 3 = 24 bits) in octets 1-3.

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

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

[0083] The UE can also activate the PUCCH relation information specified by this MAC CE 3 ms after sending an ACK (acknowledgment) for the MAC CE for activating a specific PUCCH spatial relation information.

[0084] <Spatial Relations for SRS and PUSCH>

[0085] The UE can also receive information (SRS configuration information, e.g., parameters in "SRS-Config" of the RRC control element) used in the transmission of a measurement reference signal (e.g., Sounding Reference Signal (SRS)).

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

[0087] An SRS resource set can also be associated with a specific number of SRS resources (a specific number of SRS resources can also be grouped). Each SRS resource can also be determined by an SRS resource indicator (SRI) or an SRS resource ID (Identifier).

[0088] The SRS resource set information can also include the SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, the 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 (Periodic SRS (P-SRS)), semi-persistent SRS (Semi-Persistent SRS (SP-SRS)), and aperiodic SRS (Aperiodic SRS (A-SRS, AP-SRS)). In addition, the UE can also send P-SRS and SP-SRS periodically (or after activation, periodically) and send A-SRS based on the SRS request of DCI.

[0090] In addition, the usage (the "usage" of the RRC parameter, the "SRS-SetUse" of the L1 (Layer-1) parameter) can be, for example, beam management, codebook-based transmission (codebook: CB), non-codebook-based transmission (nonCodebook: NCB), antenna switching, etc. The SRS for the usage of codebook-based transmission or non-codebook-based transmission can also be used in the determination of 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 can also determine the precoder for PUSCH transmission based on the SRI, the Transmitted Rank Indicator (TRI), and the Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE can also determine the precoder for PUSCH transmission based on the SRI.

[0092] The SRS resource information may also include the SRS resource ID (SRS-ResourceId), the number of SRS ports, the SRS port number, the transmission Comb, the SRS resource mapping (e.g., time and / or frequency resource location, resource offset, period of the resource, number of repetitions, number of SRS symbols, SRS bandwidth, etc.), the hopping association information, the SRS resource type, the sequence ID, the spatial relation information of the SRS, etc.

[0093] The spatial relation information of the SRS (e.g., "spatialRelationInfo" of the RRC information element) may also represent the spatial relation information between a specific reference signal and the SRS. The specific reference signal may also be at least one of the synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel: SS / PBCH) block, the Channel State Information Reference Signal (CSI-RS), and the SRS (e.g., other SRS). The SS / PBCH block may also be referred to as the synchronization signal block (SSB).

[0094] Figure 2B is a diagram showing an example of the existing spatial relation information of the SRS. Using Figure 2B the information shown (e.g., the RRC information element), the UE can also receive the spatial relation information of the SRS.

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

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

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

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

[0099] In addition, BC can also be referred to as transmission / reception beam correspondence, beam reciprocity, beam calibration, calibrated / non-calibrated, reciprocity calibrated / non-calibrated, correspondence, consistency, etc.

[0100] For example, in the absence of BC, the UE can also use the same beam (spatial domain transmission filter) as the SRS (or SRS resource) indicated by the base station based on the measurement results of one or more SRSs (or SRS resources) to transmit uplink signals (e.g., PUSCH, PUCCH, SRS, etc.).

[0101] On the other hand, in the presence of BC, the UE can also use the same or corresponding beam (spatial domain transmission filter) as the beam (spatial domain reception filter) used in the reception of a specific SSB or CSI-RS (or CSI-RS resource) to transmit uplink signals (e.g., PUSCH, PUCCH, SRS, etc.).

[0102] When spatial relation information related to an SSB or CSI-RS and an SRS is set for a certain SRS resource (for example, in the case of having BC), the UE can also use the same spatial domain filter (spatial domain transmission filter) as the spatial domain filter (spatial domain reception filter) used for the reception of the SSB or CSI-RS to transmit the SRS resource. In this case, the UE can also be considered that the UE reception beam of the SSB or CSI-RS is the same as the UE transmission beam of the SRS.

[0103] When spatial relation information related to another SRS (reference SRS) and a certain SRS (target SRS) is set for a certain SRS (target SRS) resource (for example, in the case of not having BC), the UE can also use the same spatial domain filter (spatial domain transmission filter) as the spatial domain filter (spatial domain transmission filter) used for the transmission of the reference SRS to transmit the target SRS resource. That is, in this case, the UE can also be considered that the UE transmission beam of the reference SRS is the same as the UE transmission beam of the target SRS.

[0104] The UE can also determine the spatial relation of the PUSCH scheduled by the DCI based on the value of a specific field (for example, SRS resource identifier (SRI) field) in the DCI (for example, DCI format 0_1). Specifically, the UE can also use the spatial relation information (for example, "spatialRelationInfo" of the RRC information element) of the SRS resource determined based on the value of the specific field (for example, SRI) for PUSCH transmission.

[0105] In the case of using codebook-based transmission for the PUSCH, the UE can also be set two SRS resources by RRC and be indicated one of the two SRS resources by the DCI (a specific 1-bit field). In the case of using non-codebook-based transmission for the PUSCH, the UE can also be set four SRS resources by RRC and be indicated one of the four SRS resources by the DCI (a specific 2-bit field). To use a spatial relation other than the two or four spatial relations set by RRC, RRC reconfiguration is required.

[0106] In addition, DL-RS can be set for the spatial relation of the SRS resource used in the PUSCH. For example, for SP-SRS, the UE can be set the spatial relations of multiple (for example, up to 16) SRS resources by RRC and be indicated one of the multiple SRS resources by the MAC CE.

[0107]

[0108] In future wireless communication systems (e.g., NR after Rel.17), as a UL beam indication method, the use of UL TCI states is being studied. 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 for PDCCH / PDSCH.

[0109] The channel / signal for which the UL TCI state is set (specified) (which can also be referred to as the target channel / RS) can 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 is in a QCL relationship with this channel / signal can be, for example, either a DL RS (e.g., SSB, CSI-RS, TRS, etc.) or a UL RS (e.g., SRS, SRS for beam management, etc.).

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

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

[0113] The QCL type represented by the UL TCI state can be the existing QCL types A - D, can be other QCL types, and can also include specific spatial relationships, associated antenna ports (port indices), etc.

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

[0115] (Multi-TRP)

[0116] In NR, one or more Transmission / Reception Points (TRPs) (multi-TRP) are being studied to perform DL transmission to a UE using one or more planes (multi-plane). In addition, the UE's UL transmission to one or more TRPs is being studied.

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

[0118] Different codewords (Code Word (CW)) and different layers can also be transmitted from each of the multi-TRP's TRPs. As a way of multi-TRP transmission, Non-Coherent Joint Transmission (NCJT) is being studied.

[0119] In NCJT, for example, TRP1 modulates and maps the first codeword, performs layer mapping, and uses the first precoding to transmit the first PDSCH for the first number of layers (e.g., 2 layers). In addition, TRP2 modulates and maps the second codeword, performs layer mapping, and uses the second precoding to transmit the second PDSCH for the second number of layers (e.g., 2 layers). It can also be assumed that these first PDSCH and second PDSCH are not in a Quasi-Co-Location (QCL) relationship (not quasi-co-located).

[0120] In addition, multiple PDSCHs transmitted by NCJT can also be defined as partially or completely overlapping 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 can overlap.

[0121] (Path Loss Reference RS)

[0122] The Path Loss Reference RS (Path Loss Reference Reference Signal (RS), Path Loss Reference RS, Path Loss Measurement RS) can also be used in the calculation of the path loss for PUSCH / PUCCH / SRS. In Rel. 15 NR, the maximum number of Path Loss Reference RS is 4. In other words, the UE does not expect to maintain more than 4 Path Loss Reference RS per serving cell simultaneously for all PUSCH / PUCCH / SRS transmissions.

[0123] (Transmission Power Control)

[0124] <Transmission Power Control for PUSCH>

[0125] In NR, the transmission power of PUSCH is controlled based on the TPC command (also referred to as value, increment / decrement value, correction value, etc.) indicated by the value of a specific field (also known as the TPC command field, etc.) within the DCI.

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

[0127] Here, the power control adjustment state can also be set by a higher-layer parameter to have multiple states (e.g., two states) or a single state. In addition, when multiple power control adjustment states are set, one of the multiple power control adjustment states can also be identified by the index l (e.g., l ∈ {0, 1}). The power control adjustment state can also be referred to as the PUSCH power control adjustment state, the first or second state, etc.

[0128] In addition, the PUSCH transmission opportunity i is a specific period during which PUSCH is transmitted. For example, it can also be composed of one or more symbols, one or more time slots, etc.

[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 referred to as the maximum transmission power, UE maximum output power, etc.) of the user terminal set in the carrier f of the serving cell c during the transmission opportunity i. P O＿PUSCHParameters such as a, b, f, and c(j) are parameters related to the target received power set, for example, in the active UL BWP b of carrier f of serving cell c in parameter set setting j (for example, also referred to as parameters related to transmission power offset, transmission power offset P0, target received power parameters, etc.).

[0133] M PUSCH RB Parameters such as a, b, f, and c(i) are the number of resource blocks (bandwidth) allocated to the PUSCH, for example, in transmission opportunity i in the active UL BWP b of carrier f of serving cell c and subcarrier spacing μ. αb,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 ) is, for example, the index q of the reference signal (path loss reference RS, DL RS for path loss measurement, PUSCH - PathlossReferenceRS) used with the downlink BWP associated with the active UL BWP b of carrier f of serving cell c d , the path loss (path loss compensation) calculated by the user equipment.

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

[0136] f b , f,c(i,l) is the value of the TPC command for the power control adjustment state index 1 of the active UL BWP of carrier f based on serving cell c and transmission opportunity i (for example, power control adjustment state, cumulative value of the TPC command, value based on closed - loop). For example, f b , f,c(i,l) can also be represented by Equation (2). l can also be referred to as the closed - loop index.

[0137] [Mathematical formula 2]

[0138] Equation (2)

[0139] f b，f，c (i,l)=fb,f,c(ilast,l)+δ PUSCH，b，f，c (ilast,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 transmission opportunity i of the PUSCH immediately before last The subsequent transmission opportunity i may be a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 0_0 or 0_1) in which the activated UL BWP b of the carrier f of the serving cell c is detected, or a TPC command represented by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled by a specific 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 where a setting for power control of the SRI-based PUSCH is provided (e.g., SRI-PUSCH-PowerControl), and more than one value of the ID of the path loss reference RS is provided, the UE can also obtain, from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id within SRI-PUSCH-PowerControl), the mapping between the set of values for the SRI field within DCI format 0_1 and the set of ID values of the path loss reference RS. The UE can also determine the RS resource index q based on the ID of the path loss reference RS mapped to the SRI field value within DCI format 0_1 that schedules the PUSCH. d 。

[0145] In the case where PUSCH transmission is scheduled by DCI format 0_0, and the UE is not provided with PUCCH spatial relation information for the PUCCH resource having the lowest index for each carrier f and serving cell c of the active UL BWP b, the UE can also use the same RS resource index q as that for PUCCH transmission within this 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 setting for PUCCH transmission, or in the case where PUSCH transmission is scheduled by DCI format 0_1 that does not contain an SRI field, or in the case where the setting for power control of the SRI-based PUSCH is not provided to the UE, the UE can also use the RS resource index q with an ID of the path loss reference RS of zero. d 。

[0147] In the case where, for PUSCH transmission configured by a configured grant setting (e.g., ConfiguredGrantConfig), the configured grant setting contains a specific parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q d can also be provided to the UE through the path loss reference index (e.g., pathlossReferenceIndex) within the specific parameter.

[0148] In the case where, for PUSCH transmission configured by a configured grant setting, the configured grant setting does not contain a specific parameter, the UE can also determine the RS resource index q based on the value of the ID of the path loss reference RS mapped to the SRI field within the DCI format that activates the PUSCH transmission. d 。In the case where the DCI format does not contain an SRI field, the UE can also determine the RS resource index q with an ID of the path loss reference RS of zerod 。

[0149] In addition, Equations (1) and (2) are merely illustrative and not limited thereto. The user terminal only needs to control the transmission power of the PUSCH based on at least one of the parameters illustrated in Equations (1) and (2), and may include additional parameters or omit some parameters. In addition, in the above Equations (1) and (2), the transmission power of the PUSCH is controlled for each active UL BWP of a certain carrier of a certain serving cell, but not limited thereto. At least a part of the serving cell, carrier, BWP, and power control adjustment state may also be omitted.

[0150] <PUCCH Transmission Power Control>

[0151] In addition, in NR, the transmission power of the PUCCH is controlled based on the TPC command (also referred to as value, increment / decrement value, correction value, indication value, etc.) indicated by the value of a specific field (also referred to as TPC command field, first field, etc.) in the DCI.

[0152] For example, using the index l of the power control adjustment state, the transmission power (P PUCCH , b, f, c(i, q u , q d , l)) of the PUCCH in the PUCCH transmission opportunity (transmission occasion) (also referred to as transmission period, etc.) i for the active UL BWP b of the carrier f of the serving cell c can also be represented by the following Equation (3).

[0153] The power control adjustment state may also be referred to as PUCCH power control adjustment state, first state, second state, etc.

[0154] In addition, the PUCCH transmission opportunity i is a specific period during which the PUCCH is transmitted. For example, it may be composed of one or more symbols, one or more time slots, etc.

[0155] [Mathematical Formula 3]

[0156] Equation (3)

[0157]

[0158] In Equation (3), P CMAX，f，c(i) For example, it is the transmission power of the user terminal (also known as the maximum transmission power, UE maximum output power, etc.) set in the carrier f of the serving cell c in transmission opportunity i. P O_PUCCH，b，f，c (q u ) For example, it is a parameter related to the target reception power set in the active UL BWP b of the carrier f of the serving cell c in transmission opportunity i (for example, also known as a parameter related to the transmission power offset, transmission power offset P0, or target reception power parameter, etc.).

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

[0160] Δ F_PUCCH (F) is a high - layer parameter given for each PUCCH format. Δ TF，b，f，c (i) is the transmission power adjustment component (offset) for the UL BWP b of the carrier f of the serving cell c.

[0161] g b ,f,c(i,l) is the value of the TPC command based on the power control adjustment status index 1 of the active UL BWP of the carrier f of the serving cell c and transmission opportunity i (for example, power control adjustment status, cumulative value of the TPC command, value based on closed - loop, PUCCH power adjustment status). For example, gb,f,c(i,l) can also be represented by Equation (4).

[0162] [Mathematical formula 4]

[0163] Equation (4)

[0164] g b，f，c (i,l) = g b，f，c (i last ,l)+δ PUSCH，b，f，c (i last ,i,K[[ID=4,6]] PUCCH ,l)

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

[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 of 1 by linking to the corresponding PUCCH P0 ID.

[0168] When the UE activates UL BWP b for carrier f of serving cell c, the higher layer provides the corresponding PUCCH power adjustment state 1. 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 be based on the corresponding uThe PUCCH P0 ID associated with the PUCCH spatial relation information corresponding to the closed-loop index value of 1 is determined by the value of q u to determine the value of 1 according to the value of q

[0169] q u It can also be the PUCCH P0 ID (p0-PUCCH-Id) representing the PUCCH P0 (P0-PUCCH) within the PUCCH P0 set (p0-Set).

[0170] In addition, Equations (3) and (4) are merely illustrative and not limited thereto. The user equipment only needs to control the transmission power of the PUCCH based on at least one of the parameters illustrated in Equations (3) and (4), and can include additional parameters or omit some parameters. In addition, in the above Equations (3) and (4), the transmission power of the PUCCH is controlled for each active UL BWP of a certain carrier of a certain serving cell, but not limited thereto. At least a part of the serving cell, carrier, BWP, and power control adjustment state can also be omitted.

[0171] <SRS Transmission Power Control>

[0172] For example, using the index l of the power control adjustment state, for the SRS transmission opportunity (transmission occasion) (also referred to as the transmission period, etc.) i of the active UL BWP b of the carrier f of the serving cell c, the transmission power (P SRS , b, f, c(i, qs, l)) of the SRS can also be represented by the following Equation (5).

[0173] The power control adjustment state can also be referred to as the SRS power control adjustment state, the value based on the TPC command, the cumulative value of the TPC command, the value based on the closed loop, the first state, the second state, etc. l can also be referred to as the closed-loop index.

[0174] In addition, the SRS transmission opportunity i is a specific period during which the SRS is transmitted. For example, it can also be composed of one or more symbols, one or more time slots, etc.

[0175] [Mathematical Formula 5]

[0176] Equation (5)

[0177]

[0178] In Equation (5), P CMAX，f，c(i) is the maximum output power of the UE for the carrier f of the serving cell c in the SRS transmission opportunity i. P O_SRS，b，f，c (q s ) is a parameter related to the target received power provided by p0 provided through the activated UL BWP b and SRS resource set q for the carrier f of the serving cell c s (provided by SRS-ResourceSet and SRS-ResourceSetId) (for example, also referred to as a parameter related to the transmission power offset, transmission power offset P0, or target received power parameter, etc.).

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

[0180] α SRS，b，f，c (q s ) is provided by α (for example, alpha) through the activated UL BWP b and SRS resource set q for the carrier f of the serving cell c and the subcarrier spacing μ s .

[0181] PL b，f，c (q d ) is the DL path loss estimation value [dB] calculated by the UE for the activated DL BWP of the serving cell c and the SRS resource set q s , using the RS resource index q d . The RS resource index q d is the path loss reference RS associated with the SRS resource set q s (provided by the DL RS for path loss measurement, for example, pathlossReferenceRS), and is the SS / PBCH block index (for example, ssb-Index) or 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 of the carrier f of the serving cell c and the SRS transmission opportunity i. The setting of the SRS power control adjustment state (for example, srs-PowerControlAdjustmentStates) is the current PUSCH power control adjustment state f when it represents the same power control adjustment state for SRS transmission and PUSCH transmission b，f，c(i, l). On the other hand, in the case where the setting of the SRS power control adjustment state represents an independent power control adjustment state for SRS transmission and PUSCH transmission and the setting of TPC accumulation is not provided, the SRS power control adjustment state h b，f，c (i) can also be represented by Equation (6).

[0183] [Mathematical formula 6]

[0184] Equation (6)

[0185]

[0186] In Equation (6), δ SRS，b，f，c (m) can also be encoded together with other TPC commands in the PDCCH with DCI (e.g., DCI format 2_3). Σδ SRS，b，f，c (m) can also be the sum of the TPC commands within the set S SRS with cardinality c(S SRS ) received by the UE between the K i (i - i0) - 1 symbols before the SRS transmission opportunity i - i0 and the K i (i) symbols before the SRS transmission opportunity i on the active UL BWP b of the carrier f with subcarrier spacing μ in the serving cell c. Here, i0 > 0 is the smallest integer earlier than the K SRS (i - i0) - 1 symbols before the SRS transmission opportunity i - i0 compared to the K SRS (i) symbols before the SRS transmission opportunity i.

[0187] In addition, Equations (5) and (6) are merely illustrative and not limited thereto. The user terminal only needs to control the transmission power of SRS based on at least one of the parameters illustrated in Equations (5) and (6), and may include additional parameters or omit some parameters. Furthermore, in the above - mentioned Equations (5) and (6), the transmission power of SRS is controlled for each BWP of a certain carrier in a certain cell, but not limited thereto. At least a part of the cell, carrier, BWP, and power control adjustment state may be omitted.

[0188] (Indication of power control setting)

[0189] In Rel.15 NR, in order to follow the change of spatial relationship, the switching between multiple states of open-loop (OL)-TPC or closed-loop (CL)-TPC can be performed through the SRI field in DCI. When the usage of the SRS resource set is codebook transmission, the maximum number of SRI field values is 2 (the SRI field length is 1 bit), and when the usage of the SRS resource set is 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, within the PUSCH power control information (PUSCH-PowerControl) in the PUSCH setting information (PUSCH-Config), a list (sri-PUSCH-MappingToAddModList) of power control settings (SRI-PUSCH-PowerControl) mapped to the SRI field values is included. 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) indicating the path loss reference RS, a P0-α set ID (sri-P0-PUSCH-AlphaSetId) indicating the set of P0 and α, and a closed-loop (CL) ID (sri-PUSCH-ClosedLoopIndex) corresponding to the power control state 1.

[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 (transmission 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, so it can also be referred to as an OL power control (TPC) parameter. The closed-loop ID is used in closed-loop (CL) power control, so it can also be referred to as a CL power control (TPC) parameter.

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

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

[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 of notifying the UE of information related to the spatial relationship (or, QCL setting) between the newly defined reference RS and the target RS, which is the framework of the new UL TCI, will be described. In addition, as the framework of the new UL TCI, the application of the information related to the spatial relationship between the reference RS and the target RS will be described.

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

[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 (e.g., 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 (e.g., UL TCI state) through at least one of high-layer signaling and physical-layer signaling. In addition, the UE may also receive this information by combining high-layer signaling and physical-layer signaling.

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

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

[0208] The UE can also be configured via RRC signaling as a candidate (list) for information related to the newly defined spatial relationship between the reference RS and the target RS, and the information related to the spatial relationship for a certain channel / RS (e.g., SRS, PUCCH, PUSCH) can be activated / deactivated via a MAC CE.

[0209] In addition, the UE can also be configured via RRC signaling as a candidate (list) for information related to the newly defined spatial relationship between the reference RS and the target RS, and be dynamically indicated via L1 signaling (e.g., downlink control information (DCI)) for the information related to the spatial relationship for a certain channel / RS (e.g., aperiodic SRS, PUSCH, PRACH (e.g., PRACH indicated by transmitting a PDCCH with a new field in the DCI format) and PUCCH (e.g., PUCCH indicated by a new field in the DL allocation)).

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

[0211] For example, the information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) can also be Figure 3A the information element related to the spatial relationship between the reference RS and the target RS as shown. Within the information element of spatialRelationInfo-r17, an index (SpatialRelationInfoId) related to a certain quantity (e.g., X) of specific information can also be configured.

[0212] In addition, as Figure 3B shown, within the information element related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17), information related to the panel (e.g., ID, panelIndex) can also be configured. The information related to the panel can also be at least one of the information related to the UE antenna group (UE antenna group ID), the information related to a specific RS group (specific RS group ID), or 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) can 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) can also be applied to all UL channels / RS. In other words, the UE can also 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, the newly defined information related to the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) can be applied to several UL channels / RS, and the information related to the existing spatial relationship can be applied to the remaining UL channels / RS.

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

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

[0217] Considering the UL TCI state, spatial relationship information, etc. that are scheduled to be adopted in future wireless communication systems, there has been no research on how the UE determines the parameters related to UL transmit power control. If the parameters related to UL transmit power control cannot be determined appropriately, there is a concern about a reduction in communication throughput.

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

[0219] Hereinafter, embodiments related to the present disclosure will be described in detail with reference to the drawings. Each embodiment and the wireless communication method related to each mode can be applied separately or in combination.

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

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

[0222] In this disclosure, the UL TCI state can also be replaced with the transmit beam of the UE, the UL beam, the spatial relationship of the UL TCI state, the spatial relationship, etc. The UL beam can also mean the transmit beam of the PUCCH / PUSCH. "UL TCI", "ULTCI", "UL-TCI" can also be replaced with each other.

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

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

[0225] In this disclosure, "correlation" and "mapping" can also be replaced with each other. Expressions such as "rXX" (e.g., r17) in this disclosure represent the version number of 3GPP (e.g., 3GPP Rel.17), but can also be replaced with expressions corresponding to other version numbers (e.g., r18, r19, r20, etc.).

[0226] (Wireless communication method)

[0227] <PUCCH Power Control of Rel.16>

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

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

[0230] In addition, P0-PUCCH includes the ID of P0-PUCCH (p0-PUCCH-Id) and the value of P0-PUCCH (p0-PUCCH-Value). That is, the association between the P0-PUCCH-ID and the value of P0-PUCCH is represented in the PUCCH power control information.

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

[0232] <First Embodiment>

[0233] In the first embodiment, the setting of power control information for PUCCH in the framework of unified UL TCI (unified TCI, unified TCI, ULTCI) is described. The UE receives, through higher layer signaling (e.g., RRC), specific information indicating the association (mapping) between the identifier (ID) representing spatial relation information and the parameters related to PUCCH transmission power control (PUCCH path loss reference RS / P0-PUCCH / closed-loop index). The UE determines the parameters related to PUCCH transmission power based on the mapping between the spatial relation information and the parameters related to PUCCH transmission power control, and determines the PUCCH transmission power. The UE controls the transmission of PUCCH based on the determined PUCCH transmission 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 ). "Closed-loop index" corresponds to l in Equations (3) and (4).

[0235] In the present disclosure, "PUCCH path loss reference RS" and "PUCCH path loss reference RS-ID" can also be replaced with each other. "P0-PUCCH" and "P0-PUCCH-ID" can also be replaced with each other. "PUCCH-closed-loop index" and "closed-loop index" can also be replaced with each other.

[0236] [Method 1-1]

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

[0238] Figure 6 is a diagram showing an example of the PUCCH power control information element in Method 1-1. As Figure 6As shown, the PUCCH power control information (PUCCH-PowerControl-r17) as an RRC parameter includes the 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) includes the PUCCH spatial relation 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 mapping between the PUCCH spatial relation information and the PUCCH path loss reference RS / P0-PUCCH / closed-loop index is represented in the PUCCH power control information element.

[0240] Figure 7 It is a diagram showing an example of the ULTCI-PUCCH mapping setting information element in Mode 1-1. Different from the PUCCH power control information element, the ULTCI-PUCCH mapping setting information element is an example of a new information element that does not include the reference signal used in the spatial relation. As Figure 7 shown, the ULTCI-PUCCH mapping information (ULTCI-PUCCH-mapping-r17) corresponds to the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17). The information included in the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17) is the same as Figure 6 the example shown.

[0241] The PUCCH spatial relation information ID (spatialRelationInfoid-r17) can also be used in the setting of the spatial relation between the reference RS (e.g., SSB / CSI-RS / SRS) and the target UL channel / RS (e.g., PUCCH / PUSCH / SRS / UL DMRS), representing the unified (UL) spatial relation setting. The PUCCH spatial relation information ID (spatialRelationInfoId-r17) can also be regarded as the UL-TCI state setting.

[0242] [Mode 1-2]

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

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

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

[0246] In addition, the spatial relation 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 to PUCCH.

[0247] [UE's operation]

[0248] In the PUCCH power control of the first embodiment, when the spatial relation information is provided (set), the UE can also obtain the mapping between the spatial relation information ID and the path loss reference RS / P0-PUCCH / closed loop index. When the spatial relation information ID is set / 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. When the spatial relation information is not transmitted, the UE can also apply the PUCCH power control of Rel.16.

[0249] According to the first embodiment, the UE can appropriately determine the parameters related to the PUCCH transmit power, so it can appropriately control the PUCCH transmit power and prevent the reduction of communication throughput.

[0250] <Rel.16 PUSCH power control>

[0251] Figure 10 It is a diagram showing an example of parameters related to the power control of Rel.16 PUSCH. As 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-P0-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 P0-PUSCH / α / path loss reference RS / closed-loop index based on the mapping of SRI, P0-PUSCH / α / path loss reference RS / closed-loop index of RRC parameters indicated in the DCI for scheduling UL. In the new unified framework, a new DCI field can also be used to indicate the spatial relationship of PUSCH instead of SRI. However, in this case, how to determine the parameters of PUSCH power control becomes a problem.

[0253] <Second Embodiment>

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

[0255] The parameters related to the PUSCH transmission power control are PUSCH path loss reference RS / P0-PUSCH / α (Alpha) / closed-loop index. The PUSCH path loss reference RS corresponds to q in Equation (1). d . P0-PUSCH corresponds to P in Equation (1). O_PUSCH，b，f，c (j). α corresponds to α in Equation (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 replaced with each other. "P0-PUSCH-α set ID" and "P0-PUSCH / α" can also be replaced with each other. "PUSCH-closed-loop index" and "closed-loop index" can also be replaced with each other.

[0257] [Method 2-1]

[0258] The UE receives DCI containing ULTCI as specific information different from SRI, and determines the parameters used in PUSCH transmit power control based on ULTCI and the mapping based on higher-layer signaling. This mapping is the mapping between the SRI-PUSCH power control ID sent by higher-layer signaling (such as RRC) and the parameters related to PUSCH transmit power control. The ULTCI in 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 in the same way as the PUSCH power control in Rel. 16 above. This setting can also represent the mapping between the new indication (such as ULTCI) in DCI and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed-loop index. That is, the new indication (such as ULTCI) in DCI can also correspond to the SRI-PUSCH power control ID.

[0260] Moreover, the UE can 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 (such as ULTCI) in DCI and the set mapping. For example, when ULTCI = 0, the UE can also apply the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the SRI-PUSCH power control ID = 0.

[0261] Upon receiving the spatial relation 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 code point of ULTCI in the DCI. When ULTCI is indicated in the DCI scheduling PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to this ULTCI as the parameter used in PUSCH transmission power control. In the case where the spatial relation information is not transmitted, the UE can also apply the above Rel.16 PUSCH power control.

[0262] [Mode 2-2]

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

[0264] In Mode 2-2, it is envisaged to apply a new RRC-based setting, which represents 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 It is a diagram showing an example of the parameters related to the power control of PUSCH in Mode 2-2. The ULTCI-PUSCH power information (ULTCI-PUSCH-PowerControl-r17) as an RRC parameter includes the ULTCI-PUSCH power control ID (ULTCI-PUSCH-PowerControlId-r17), the ULTCI-PUSCH path loss reference RS-ID (ULTCI-PUSCH-PathlossReferenceRS-Id), the ULTCI-P0-PUSCH-α set ID (ULTCI-P0-PUSCH-AlphaSetId), and the ULTCI-PUSCH-closed-loop index (ULTCI-PUSCH-ClosedLoopIndex). That is, the mapping between the PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / closed-loop index is represented in the ULTCI-PUSCH power information. The ULTCI in the DCI corresponds to the PUSCH power control ID.

[0266] The UE can 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 can 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 the spatial relation 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 code point of ULTCI in the DCI. When ULTCI is indicated in the DCI for scheduling PUSCH, the UE can also determine the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to that ULTCI as the parameter used in PUSCH transmission power control. When the spatial relation information is not sent, the UE can also apply the above Rel.16 PUSCH power control.

[0268] [Method 2-3]

[0269] The UE receives the DCI containing the identifier of the spatial relation information (spatial relation information ID) as specific information, and determines the parameter used in PUSCH transmission power control based on the spatial relation information ID and the mapping sent via higher layer signaling. This mapping is the mapping between the spatial relation information ID sent via higher layer signaling (RRC) and the parameter related to PUSCH transmission power control. The spatial relation information ID in the DCI corresponds to the spatial relation information ID in the higher layer signaling (RRC).

[0270] The mapping between the spatial relation information ID sent via higher layer signaling and the parameter related to PUSCH transmission power control can be included either in the PUSCH power control information element or in a new information element different from the PUSCH power control information element. The following explains each example.

[0271] Figure 12 It is a diagram showing an example of the PUSCH power control information element in Method 2-3. As Figure 12As shown, the PUSCH power control information (PUSCH-PowerControl-r17) as an 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) includes the spatial relation information ID (spatialRelationInfoId-r17), the PUSCH path loss reference RS-ID (PUSCH-PathlossReferenceRS-Id), the P0-PUSCH-α set ID (P0-PUSCH-AlphaSetId), and the PUSCH-closed loop index (PUSCH-ClosedLoopIndex). That is, the mapping of the spatial relation information ID and the parameters (PUSCH path loss reference RS / P0-PUSCH / α / closed loop index) used in the PUSCH transmission power control is represented in the PUSCH power control information element.

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

[0274] When receiving the spatial relation information and the 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 relation information ID. When the spatial relation 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 relation information ID as the parameter used in the PUSCH transmission power control. When the spatial relation information is not sent, the UE can also apply the PUSCH power control method of Rel.16.

[0275] In Mode 2-3, the UE can also support PUSCH transmission for multiple TRPs based on a single DCI (S-DCI, a DCI indicating multiple TCI states) (e.g., PUSCH transmission for multiple TRPs in Rel. 16). To support PUSCH transmission for multiple TRPs, the UE can also map the code points of the UL TCI in the DCI to multiple spatial relation information (spatial relation information IDs). In Mode 2-3, the UL TCI code points in the DCI are easily mapped to multiple power control parameters.

[0276] According to the second embodiment, the UE can appropriately determine the parameters related to the PUSCH transmission power, so it can appropriately control the PUSCH transmission power and prevent the reduction of communication throughput.

[0277] <SRS Power Control in Rel. 16>

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

[0279] The path loss reference RS of the UL channel / RS is associated with the QCL / TCI state / spatial relation of the UL channel / RS. In the unified UL TCI framework, the path loss reference RS is set as part of the unified spatial relation. The path loss reference RS is applied to PUCCH / PUSCH / SRS power control.

[0280] <Third Embodiment>

[0281] The UE receives, through higher layer signaling, information indicating the mapping of the identifier of the spatial relation information (spatial relation information ID) and the path loss reference reference signal (path loss reference RS), and based on the indicated spatial relation information ID and this mapping, determines the path loss reference RS to be used in the transmission power control. The UE uses the determined path loss reference RS to control the transmission power of PUSCH / PUCCH / SRS.

[0282] In the present disclosure, "spatial relationship", "spatial relationship information", and "spatial relationship information ID" can also be replaced with each other. "Path loss reference RS", "Path loss reference RS ID", "Path loss reference signal (Path loss RS)", "Path loss reference signal ID (Path loss RS ID)", and "PL-RS" can also be replaced with each other.

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

[0284] [Mode 3-1]

[0285] In Mode 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 And Figure 15B is a diagram showing the setting of the path loss reference RS in Mode 3-1. Figure 15A is a diagram showing the path loss reference RS setting information in Mode 3-1. The path loss reference RS setting information (ULTCI-PathlossReferenceRS-config-r17), as 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 Mode 3-1. As Figure 15B shown, the spatial relationship information as an RRC parameter includes the spatial relationship information ID (spatialRelationInfoId-r17) and the path loss reference RS ID (PathlossReferenceRS-Id-r17). That is, the mapping between the spatial relationship information (spatial relationship information ID) and the path loss reference RS (path loss reference RS ID) is represented.

[0288] [Mode 3-2]

[0289] In Mode 3-2, the information indicating the mapping between the spatial relation information ID and the path loss reference reference signal (path loss reference RS) is included in the spatial relation information (SpatialRelationInfo-r17) of the RRC parameters. That is, the UE receives the spatial relation information including the information indicating the mapping.

[0290] Figure 16 is a diagram showing the spatial relation information in Mode 3-2. As Figure 16 shown, the spatial relation information (SpatialRelationInfo-r17) as an RRC parameter includes the spatial relation information ID (spatialRelationInfoId-r17) and the path loss reference RS setting information (PathlossReferenceRS-Config-r17). That is, by directly setting the path loss reference RS in the spatial relation information, the mapping between the spatial relation information ID and the path loss reference RS is represented.

[0291] [Mode 3-3]

[0292] In Mode 3-3, the information indicating the mapping between the spatial relation information ID and the path loss reference reference signal (path loss reference RS) is included in the ULTCI path loss reference RS setting information (ULTCI-PathlossReferenceRS-config-r17) as 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 setting information.

[0293] Figure 17 is a diagram showing the ULTCI path loss reference RS setting information in Mode 3-3. As Figure 17 shown, the ULTCI path loss reference RS setting information as a new RRC parameter includes the ULTCI path loss RS (ULTCI-PLRS-r17) corresponding to the ULTCI path loss RS mapping (ULTCI-PLRS-mapping-r17). In addition, the ULTCI path loss RS (ULTCI-PLRS-r17) includes the spatial relation information ID (spatialRelationInfoId-r17) and the path loss reference RS ID (PathlossReferenceRS-Id-r17). That is, the ULTCI path loss reference RS setting information represents the mapping between the spatial relation information ID and the path loss reference RS.

[0294] [Mode 3-4]

[0295] In Mode 3-4, the information indicating the mapping between the spatial relation information ID and the path loss reference 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 with the path loss RS.

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

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

[0298] [UE operation]

[0299] In the power control of PUCCH / SRS / PUSCH, when the UE receives the spatial relation information (spatialRelationInfo-r17), the UE obtains the mapping between the spatial relation information ID and the path loss reference RS (path loss reference RS ID). When the spatial relation information ID for PUCCH resource / SRS resource / PUSCH transmission is configured (indicated), the UE determines the path loss reference RS based on this spatial relation information ID and the obtained mapping. The spatial relation information ID is configured (indicated) from a list configured through RRC by at least one of MAC CE and DCI.

[0300] In addition, at least a part of the first embodiment and the third embodiment relates to the determination of the path loss reference RS for PUCCH power control. At least a part of the second embodiment and the third embodiment relates to the determination of the 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, and thus can appropriately control the PUCCH / PUSCH / SRS transmission power and prevent a reduction in communication throughput.

[0302] <Other>

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

[0304] Cross-channel setting of UL TCI may also be allowed. For example, the UL TCI ID corresponding to the UL TCI setting set in a certain channel (SRS / PUCCH / PUSCH) may also be set as the UL TCI for other channels (SRS / PUCCH / PUSCH). The channel may also be replaced by a signal.

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

[0306] There are two interpretations for UL TCI in the present disclosure. "Replace" or "append" the current spatial relation. In the case where the UL TCI replaces the current spatial relation, the UL TCI needs to include power control.

[0307] In the case where the UL TCI is added to the current spatial relation, it is not necessary to include a power control indication in the UL TCI. In the case where the UL TCI is set by a power control indication, the UE assumes this indication for high-speed transmission power control (transmission power control (TPC)). In cases where this is not so, the UE may also assume Rel.15 / 16 for TPC (the current spatial relation mechanism for controlling TPC).

[0308] (Wireless communication system)

[0309] Hereinafter, the structure of a wireless communication system according to an embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one of or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure.

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

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

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

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

[0314] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage area, and a base station 12 (12a - 12c) that is configured within the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located within at least one cell. The configuration, number, etc. of each cell and the user terminal 20 are not limited to the manner shown in the figure. Hereinafter, without distinguishing between the base stations 11 and 12, they are collectively referred to as the base station 10.

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

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

[0317] Furthermore, the user terminal 20 may communicate 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 via wired (e.g., optical fibers based on the Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is utilized as a backhaul between base stations 11 and 12, the base station 11 equivalent to the upper station can also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to the relay station can also be referred to as an IAB node.

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

[0320] User terminals 20 can also be terminals that support at least one of communication methods such as LTE, LTE-A, 5G, etc.

[0321] In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) can also be utilized. For example, in at least one of the Downlink (DL) and Uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. can also be utilized.

[0322] The wireless access method can also be referred to as a waveform. Additionally, in the wireless communication system 1, other wireless access methods (e.g., other single-carrier transmission methods, other multi-carrier transmission methods) can also be used in the wireless access methods of UL and DL.

[0323] As a downlink channel, in the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc., which are shared among the respective user terminals 20, can also be used.

[0324] In addition, as an uplink channel, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc., which are shared among the respective user terminals 20, can also be used.

[0325] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through the PDSCH. User data, high-layer control information, etc. can also be transmitted through the PUSCH. In addition, the Master Information Block (MIB) can also be transmitted through the PBCH.

[0326] Low-layer control information can also be transmitted through the PDCCH. The low-layer control information can also include, for example, downlink control information (Downlink Control Information (DCI)), and the downlink control information includes scheduling information of at least one of the PDSCH and the PUSCH.

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

[0328] In the detection of PDCCH, a control resource set (CORESET) and a search space can also be utilized. A CORESET corresponds to the resource for searching 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 certain search space based on the search space configuration.

[0329] A search space can also correspond to PDCCH candidates equivalent to one or more aggregation levels. One or more search spaces can also be referred to as a search space set. Additionally, in the present disclosure, "search space", "search space set", "search space configuration", "search space set configuration", "CORESET", "CORESET configuration", etc. can also be used interchangeably.

[0330] Uplink control information (Uplink Control Information (UCI)) including at least one of channel state information (Channel State Information (CSI)), delivery confirmation information (e.g., which can also be referred to as Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) can also be transmitted via PUCCH. A random access preamble for establishing a connection with a cell can also be transmitted via PRACH.

[0331] Furthermore, in the present disclosure, the downlink, uplink, etc. can also be expressed without "link". In addition, it can also be expressed without "Physical" at the beginning of various channels.

[0332] In the wireless communication system 1, it is also possible to transmit a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. As the DL-RS, in the wireless communication system 1, it is also possible to transmit 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.

[0333] The synchronization signal may also be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as an SS / PBCH block, an SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0334] Furthermore, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), it is also possible to transmit a reference signal for measurement (sounding reference signal (Sounding Reference Signal (SRS))), a demodulation reference signal (DMRS), etc. In addition, DMRS may also be referred to as a user terminal-specific reference signal (UE-specific Reference Signal).

[0335] (Base station)

[0336] Figure 20This is a diagram showing an example of the structure of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission path interface (transmission line interface) 140. Additionally, one or more of the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140 may be provided respectively.

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

[0338] The control unit 110 implements the overall control of the base station 10. The control unit 110 can be composed of a controller, a control circuit, etc. that can be explained based on the common knowledge in the technical field related to this disclosure.

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

[0340] The transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmission / reception unit 120 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc. that can be explained based on the common knowledge in the technical field related to this disclosure.

[0341] The transmission / reception unit 120 may be configured as an integrated transmission / reception unit or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of the transmission processing unit 1211 and the RF unit 122. The reception unit may be composed of the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

[0342] The transmitting and receiving antenna 130 can be composed of antennas that can be described based on common knowledge in the technical field related to the present disclosure, such as an array antenna and the like.

[0343] The transmitting and receiving unit 120 can also transmit the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmitting and receiving unit 120 can also receive the above-mentioned uplink channels, uplink reference signals, etc.

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

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

[0346] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform transmitting processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing (filtering process), Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, digital-to-analog conversion, etc. on the bit string to be transmitted, and output a baseband signal.

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

[0348] On the other hand, the transmitting and receiving unit 120 (RF unit 122) can also amplify, perform filter processing, demodulate to a baseband signal, etc. on the radio frequency band signal received through the transmitting and receiving antenna 130.

[0349] The transmission / reception unit 120 (reception processing unit 1212) can also apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data and the like.

[0350] The transmission / reception unit 120 (measurement unit 123) can also perform measurements related to the received signal. For example, the measurement unit 123 can also perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 can also perform measurements on received power (e.g., Reference Signal Received Power (RSRP)), reception 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 can also be output to the control unit 110.

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

[0352] In addition, the transmission unit and reception unit of the base station 10 in the present disclosure can also be constituted by at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.

[0353] The transmission / reception unit 120 can also transmit specific information representing the mapping of the identifier indicating the spatial relationship information and the parameters related to PUCCH transmission power control through high-layer signaling.

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

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

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

[0357] The transmission / reception unit 120 may also transmit, via higher layer signaling, information on the mapping between the identifier indicating the spatial relation information and the path loss reference signal.

[0358] The control unit 110 may also control the reception of the signal to which the path loss reference signal is applied for transmission power control, where the path loss reference signal is determined based on the identifier of the indicated spatial relation information and the mapping.

[0359] (User Equipment)

[0360] Figure 21 is a diagram showing an example of the structure of a user equipment according to an embodiment. The user equipment 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided respectively.

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

[0362] The control unit 210 implements overall control of the user equipment 20. The control unit 210 may be composed of a controller, a control circuit, etc. that can be explained based on common knowledge in the technical field related to the present disclosure.

[0363] The control unit 210 may also control the generation, mapping, etc. of signals. The control unit 210 may also control the transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / 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 / reception unit 220.

[0364] The transmission / reception 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 transmission / reception unit 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, etc., which are described based on the common knowledge in the technical field related to the present disclosure.

[0365] The transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may also be composed of a transmission processing unit 2211 and an RF unit 222. The reception unit may also be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0366] The transmission / reception antenna 230 can be composed of an antenna described based on the common knowledge in the technical field related to the present disclosure, such as an array antenna.

[0367] The transmission / reception unit 220 may also receive the above-mentioned downlink channels, synchronization signals, downlink reference signals, etc. The transmission / reception unit 220 may also transmit the above-mentioned uplink channels, uplink reference signals, etc.

[0368] The transmission / reception unit 220 may also use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc., to form at least one of a transmission beam and a reception beam.

[0369] The transmission / reception unit 220 (transmission processing unit 2211) may, for example, also perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on the data, control information, etc., obtained from the control unit 210, and generate a bit string to be transmitted.

[0370] The transmission / reception unit 220 (transmission processing unit 2211) may also perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filter processing, DFT processing (if necessary), IFFT processing, precoding, digital-to-analog conversion, etc., on the bit string to be transmitted, and output a baseband signal.

[0371] In addition, regarding whether to apply DFT processing, it can also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when the transform precoding is effective (enabled), the transmission / reception unit 220 (transmission processing unit 2211) can also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using the DFT-s-OFDM waveform. In cases where this is not the case, the transmission / reception unit 220 (transmission processing unit 2211) can also not perform DFT processing as the above-mentioned transmission processing.

[0372] The transmission / reception unit 220 (RF unit 222) can also perform modulation to the radio frequency band, filter processing, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmission / reception antenna 230.

[0373] On the other hand, the transmission / reception unit 220 (RF unit 222) can also perform amplification, filter processing, demodulation to the baseband signal, etc. on the radio frequency band signal received through the transmission / reception antenna 230.

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

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

[0376] In addition, the transmission unit and reception unit of the user terminal 20 in the present disclosure can also be constituted by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.

[0377] The transmission / reception unit 220 may also receive, via higher layer signaling, specific information indicating a mapping between an identifier of spatial relation information and parameters related to physical uplink control channel (PUCCH) transmission power control. 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 be information that does not include a reference signal used in the spatial relation. The specific information may also include information indicating a downlink reference signal used in the spatial relation and a downlink reference signal used in path loss estimation.

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

[0379] The transmission / reception unit 220 may also receive downlink control information (DCI) including specific information different from a sounding reference signal resource identifier (SRI), and receive, via higher layer signaling, a mapping between the specific information and parameters related to physical uplink shared channel (PUSCH) transmission power control. The specific information may also be an uplink transmission setting indication (ULTCI). The specific information may also be an identifier of spatial relation information.

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

[0381] The transmission / reception unit 220 may also receive, via higher layer signaling, information indicating a mapping between an identifier of spatial relation information and a path loss reference signal. The transmission / reception unit 220 may also receive the spatial relation information including information indicating the mapping. The transmission / reception unit 220 may also receive uplink transmission setting indication (ULTCI) path loss reference signal setting information including information indicating the mapping.

[0382] The control unit 210 may also determine, based on the identifier of the indicated spatial relation information and the mapping, the path loss reference signal used in transmission power control.

[0383] (Hardware Structure)

[0384] In addition, the block diagrams used in the description of the above embodiments illustrate blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. Furthermore, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented by a single device physically or logically combined, or can be implemented by two or more physically or logically separated devices directly or indirectly (e.g., by wire, wireless, etc.) connected with these multiple devices. The functional block can also be implemented by combining the above single device or the above multiple devices with software.

[0385] Here, among functions, there are judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, broadcasting, notification, communication, forwarding, configuration (setting), reconfiguration (resetting), allocation, mapping, assignment, etc., but are not limited to these. For example, a functional block (structural unit) that implements a transmission function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0386] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure can also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 22 It is a diagram showing an example of the hardware structure of a base station and a user terminal according to an embodiment. The above base station 10 and user terminal 20 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, etc.

[0387] In addition, in the present disclosure, terms such as device, circuit, equipment, section, unit, etc. can be mutually replaced. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of each device shown in the figure, or can be configured not to include some devices.

[0388] For example, only one processor 1001 is illustrated, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or by other means. Further, the processor 1001 may also be implemented by one or more chips.

[0389] Regarding each function in the base station 10 and the user terminal 20, for example, by reading a specific software (program) into hardware such as the processor 1001 and the memory 1002, the processor 1001 performs operations and controls communication via the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003, thereby implementing the function.

[0390] The processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may also be constituted by a central processing unit (Central Processing Unit (CPU)) including an interface with peripheral devices, a control device, an arithmetic device, registers, etc. For example, at least a part of the above control unit 110 (210), transmission / reception unit 120 (220), etc. may also be implemented by the processor 1001.

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

[0392] The memory 1002 may also be a computer-readable recording medium, for example, constituted by at least one of a read-only memory (Read Only Memory (ROM)), an erasable programmable read-only memory (Erasable Programmable ROM (EPROM)), an electrically erasable programmable read-only memory (Electrically EPROM (EEPROM)), a random access memory (Random Access Memory (RAM)), and other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store a program (program code), software module, etc. executable for implementing the wireless communication method according to an embodiment of the present disclosure.

[0393] The storage device 1003 can also be a computer-readable recording medium, which is composed of at least one of, for example, a flexible disc, a floppy (registered trademark) disc, an optical disc (such as a compact disc (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disc, a Blu-ray (registered trademark) disc, a removable disc, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage device 1003 can also be referred to as an auxiliary storage device.

[0394] The communication device 1004 is hardware (a transmitting and receiving device) for performing inter-computer communication via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. In order to implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), the communication device 1004 can also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. can also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) can also be physically or logically separated and implemented by a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0395] The input device 1005 is an input device (such as a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (such as a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs output to the outside. In addition, the input device 1005 and the output device 1006 can also be integrated (such as a touch panel).

[0396] In addition, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 can be composed of a single bus or different buses can be used between each device.

[0397] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA). Part or all of the functional blocks may also be implemented using this hardware. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0398] (Variant example)

[0399] Furthermore, the terms described in this disclosure and the terms necessary for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be replaced with each other. In addition, a signal may also be a message. A Reference Signal can also be abbreviated as RS and may also be referred to as a Pilot, a pilot signal, etc. according to the applied standard. In addition, a Component Carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0400] A radio frame may also be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also have a fixed time length (e.g., 1 ms) independent of the numerology.

[0401] Here, the numerology may also refer to communication parameters applied in at least one of the transmission and reception of a certain signal or channel. For example, the numerology may also represent at least one of a SubCarrier Spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a Transmission Time Interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transmitter-receiver in the frequency domain, and a specific windowing process performed by a transmitter-receiver in the time domain.

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

[0403] A time slot can also contain multiple mini-slots. Each mini-slot can also be composed of one or more symbols in the time domain. In addition, a mini-slot can also be referred to as a sub-slot. A mini-slot can also be composed of a smaller number of symbols than a time slot. A Physical Downlink Shared Channel (PDSCH) (or Physical Uplink Shared Channel (PUSCH)) transmitted in a time unit larger than a mini-slot can also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot can also be referred to as PDSCH (PUSCH) mapping type B.

[0404] A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol all represent time units when transmitting signals. A radio frame, a sub-frame, a time slot, a mini-slot, and a symbol can also use their respective other names. In addition, time units such as frames, sub-frames, time slots, mini-slots, and symbols in this disclosure can also be replaced with each other.

[0405] For example, a sub-frame can also be referred to as a Transmission Time Interval (TTI), multiple consecutive sub-frames can also be referred to as a TTI, and a time slot or a mini-slot can also be referred to as a TTI. That is, at least one of a sub-frame and a TTI can be a sub-frame (1 ms) in the existing Long Term Evolution (LTE), can also be a period shorter than 1 ms (such as 1 - 13 symbols), and can also be a period longer than 1 ms. In addition, the unit representing a TTI can also not be referred to as a sub-frame, but as a time slot, a mini-slot, etc.

[0406] Here, a TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as the frequency bandwidth and transmission power that can be used in each user terminal) to each user terminal in units of TTI. In addition, the definition of a TTI is not limited to this.

[0407] A TTI can also be the transmission time unit of a data packet (transmission block), a code block, a codeword, etc. that has undergone channel coding, and can also become a processing unit for scheduling, link adaptation, etc. In addition, when a TTI is given, the actual time interval (such as the number of symbols) for mapping a transmission block, a code block, a codeword, etc. can also be shorter than this TTI.

[0408] In addition, when a time slot or a mini-slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini-slot) can also be the minimum time unit for scheduling. Moreover, the number of time slots (mini-slots) that constitute the minimum time unit for this scheduling can also be controlled.

[0409] A TTI having a time length of 1 ms can 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 the normal TTI can also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a time slot, etc.

[0410] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can also be replaced with a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) can also be replaced with a TTI having a TTI length less than that of the long TTI and not less than 1 ms.

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

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

[0413] In addition, one or more RBs can also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0414] In addition, a resource block can also be composed of one or more resource elements (REs). For example, one RE can also be a radio resource area of a subcarrier and a symbol.

[0415] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth, etc.) may also represent a subset of consecutive common RBs (common resource blocks) used for a certain parameter set in a certain carrier. Here, the common RBs may also be determined by the indexes of the RBs based on the common reference point of the carrier. The PRBs may also be defined in a certain BWP and be additionally numbered within that BWP.

[0416] A BWP may also include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be set within a carrier.

[0417] At least one of the set BWPs may be active, and the UE may not assume to transmit and receive specific signals / channels outside the active BWP. In addition, "cell", "carrier", etc. in this disclosure may also be replaced with "BWP".

[0418] In addition, the structures such as the above-mentioned radio frames, subframes, time slots, mini-slots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-slots included in a time slot, the symbols and the number of RBs included in a time slot or mini-slot, the number of subcarriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be changed in various ways.

[0419] In addition, the information, parameters, etc. described in this disclosure may be represented by absolute values, may be represented by relative values with respect to a specific value, or may be represented by corresponding other information. For example, radio resources may also be indicated by specific indexes.

[0420] In this disclosure, the names used for parameters, etc. are not restrictive names in all aspects. Furthermore, the mathematical formulas, etc. using these parameters may also be different from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and thus, the various names assigned to these various channels and information elements are not restrictive names in all aspects.

[0421] The information, signals, etc. described in this disclosure can also be represented using any one of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be mentioned throughout the above description, can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0422] In addition, 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] The information, signals, etc. input and output can be stored in a specific location (e.g., a memory), or can be managed using a management table. The information, signals, etc. input and output can be overwritten, updated, or appended. The information, signals, etc. output can also be deleted. The information, signals, etc. input can also be sent to other devices.

[0424] The notification of information is not limited to the methods / embodiments described in this disclosure, and can also be performed by other methods. For example, the notification of information in this disclosure can also be implemented by physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), higher 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 an RRC message, such as an RRC Connection Setup message, an RRC Connection Reconfiguration (RRC Connection Re-setting) message, etc. In addition, MAC signaling may also be notified, for example, using a MAC Control Element (MAC CE).

[0426] In addition, the notification of specific information (e.g., the notification of "is X") is not limited to explicit notification and may also be performed implicitly (e.g., by not notifying the specific information or by notifying other information).

[0427] The determination may be made by a value represented by one bit (0 or 1), by a true / false value (Boolean value) represented by true or false, or by a numerical comparison (e.g., comparison with a specific value).

[0428] Software, whether referred to as software, firmware, middleware, micro-code, a hardware description language, or by any other name, should be broadly interpreted 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, etc.

[0429] In addition, software, instructions, information, etc. can also be sent and received via a transmission medium. For example, in the case of sending software from a website, server, or other remote source using at least one of wired technologies (coaxial cables, fiber optic cables, twisted pairs, Digital Subscriber Line (DSL), etc.) and wireless technologies (infrared rays, microwaves, etc.), at least one of these wired technologies and wireless technologies is included in the definition of the transmission medium.

[0430] Terms such as "system" and "network" used in the present disclosure can be used interchangeably. "Network" can also mean a device included in the network (e.g., a base station).

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

[0432] In the present disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. can be used interchangeably. There are also cases where base stations are referred to using terms such as macro cell, small cell, femto cell, pico cell, etc.

[0433] A base station can accommodate one or more (e.g., three) cells. When the base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within the coverage range.

[0434] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "user device (User Equipment (UE))", "terminal", etc. can be used interchangeably.

[0435] There are also cases where the mobile station is referred to by subscriber station, mobile unit, subscriber unit, radio 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 can also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station can be a device mounted on a moving body, the moving body itself, etc. The moving body can be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanoid or non-humanoid). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station can also be an Internet of Things (IoT) device such as a sensor.

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

[0438] Similarly, the user terminal in the present disclosure can also be replaced by a base station. In this case, it can also be configured that the base station 10 has the functions of the above-mentioned user terminal 20.

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

[0440] The various methods / embodiments described in the present disclosure can be used alone, in combination, or switched during execution. In addition, the processing procedures, sequences, flowcharts, etc. of the various methods / embodiments described in the present disclosure can also be reordered as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented in an exemplary order, but are not limited to the specific order presented.

[0441] Each method / embodiment described in the present disclosure can 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) (where x is, for example, an integer or a decimal), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other suitable wireless communication methods, next-generation systems extended based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) and applied.

[0442] The description "based on" used in the present disclosure, unless specifically stated otherwise, does not mean "only based on". In other words, the description "based on" means both "only based on" and "at least based on".

[0443] Any reference to an element using designations such as "first", "second", etc. used in this disclosure does not fully define the quantity or order of these elements. These designations can be used in this disclosure as a convenient method for distinguishing between more than two elements. Therefore, the reference to the first and second elements does not mean that only two elements can be employed, or that the first element must be prior to the second element in a certain form.

[0444] The term "determining" as used in this disclosure encompasses diverse actions in some cases. For example, "determining" can also be a case where judging, calculating, computing, processing, deriving, investigating, looking up (searching, inquiry) (such as searching in a table, database, or other data structure), ascertaining, etc. are regarded as performing "determining".

[0445] In addition, "determining" can also be a case where receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, accessing (e.g., accessing data in a memory), etc. are regarded as performing "determining".

[0446] In addition, "determining" can also be a case where resolving, selecting, choosing, establishing, comparing, etc. are regarded as performing "determining". That is, "determining" can also be a case where some actions are regarded as performing "determining".

[0447] In addition, "determining" can also be replaced by "assuming", "expecting", "considering", etc.

[0448] The "maximum transmit power" described in this disclosure can either mean the maximum value of the transmit power, or the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0449] Terms such as "connected" and "coupled" used in this disclosure, or all their variations, mean all direct or indirect connections or couplings between two or more elements, and can include the case where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination of them. For example, "connected" can also be replaced by "access".

[0450] In this disclosure, when two elements are connected, it is possible to consider using one or more wires, cables, printed electrical connections, etc., and electromagnetic energy having wavelengths in the radio frequency domain, microwave region, and optical (both visible and invisible) regions, etc., as several non-limiting and non-exhaustive examples, and being "connected" or "coupled" to each other.

[0451] In this disclosure, a term such as "A is different from B" can also mean that "A is different from B mutually". In addition, this term can also mean that "A and B are respectively different from C". Terms such as "separated" and "coupled" can also be interpreted in the same way as "different".

[0452] When using "include", "including", and their variations in this disclosure, these terms, like the term "comprising", are meant to be inclusive. Furthermore, the term "or" used in this disclosure does not mean the exclusive or.

[0453] In this disclosure, for example, in the case where articles are added through translation like a, an, and the in English, this disclosure can also include the case where the nouns following these articles are in the plural form.

[0454] As described above, the invention related to the present disclosure has been described in detail. However, for those skilled in the art, the invention related to the present disclosure is obviously not limited to the embodiments described in the present disclosure. The invention related to the present disclosure can be implemented in the form of modifications and changes without departing from the gist and scope of the invention determined based on the description in the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not carry any restrictive meaning for the invention related to the present disclosure.

Claims

1. A terminal, comprising: a transmitting unit that reports capability information indicating a transmission setting indication state (i.e., TCI state) supporting an uplink (UL); a receiving unit that receives downlink control information (DCI) representing an identifier of the TCI state of the UL, and receives, via a higher layer signaling, a mapping between the identifier of the TCI state of the UL and a parameter related to the transmission power control of a UL shared channel (PUSCH); and a control unit that, when the capability information is reported, determines a parameter used in the PUSCH transmission power control based on the identifier of the TCI state of the UL and the mapping, and when the capability information is not reported, determines a parameter used in the PUSCH transmission power control according to a setting of the PUSCH power control based on a measurement reference signal resource identifier (SRI), wherein the setting includes an identifier of a PUSCH path loss reference reference signal (i.e., path loss reference RS) and a closed-loop index.

2. A wireless communication method, which is a wireless communication method of a terminal, comprising: a step of reporting capability information indicating a transmission setting indication state (i.e., TCI state) supporting an uplink (UL); a step of receiving downlink control information (DCI) representing an identifier of the TCI state of the UL, and receiving, via a higher layer signaling, a mapping between the identifier of the TCI state of the UL and a parameter related to the transmission power control of a UL shared channel (PUSCH); and a step of, when the capability information is reported, determining a parameter used in the PUSCH transmission power control based on the identifier of the TCI state of the UL and the mapping, and when the capability information is not reported, determining a parameter used in the PUSCH transmission power control according to a setting of the PUSCH power control based on a measurement reference signal resource identifier (SRI), wherein the setting includes an identifier of a PUSCH path loss reference reference signal (i.e., path loss reference RS) and a closed-loop index.

3. A base station, comprising: a receiving unit that receives capability information indicating a transmission setting indication state (i.e., TCI state) supporting an uplink (UL); a transmitting unit that transmits downlink control information (DCI) representing an identifier of the TCI state of the UL, and transmits, via a higher layer signaling, a mapping between the identifier of the TCI state of the UL and a parameter related to the transmission power control of a UL shared channel (PUSCH); and a control unit that, when the capability information is received, controls the reception of a PUSCH to which a parameter used in the PUSCH transmission power control determined based on the identifier of the TCI state of the UL and the mapping is applied, and when the capability information is not received, controls the reception of a PUSCH to which a parameter used in the PUSCH transmission power control determined according to a setting of the PUSCH power control based on a measurement reference signal resource identifier (SRI) is applied, wherein the setting includes an identifier of a PUSCH path loss reference reference signal (i.e., path loss reference RS) and a closed-loop index.

4. A system including a terminal and a base station, wherein the terminal includes: A transmitting unit that reports capability information indicating a transmission setting indication status, i.e., a TCI status, supporting an uplink (UL). A receiving unit that receives downlink control information (DCI) representing an identifier of the TCI status of the UL, and receives, via a high-layer signaling, a mapping between the identifier of the TCI status of the UL and parameters related to the transmission power control of a physical uplink shared channel (PUSCH). And A control unit that, when the capability information has been reported, determines parameters used in the PUSCH transmission power control based on the identifier of the TCI status of the UL and the mapping, and when the capability information has not been reported, determines parameters used in the PUSCH transmission power control according to a setting of the PUSCH power control based on a sounding reference signal resource identifier (SRI). The base station has: A receiving unit that receives the capability information. A transmitting unit that transmits the DCI and transmits the high-layer signaling. And A control unit that, when the capability information has been received, controls the reception of the PUSCH to which the parameters used in the PUSCH transmission power control determined based on the identifier of the TCI status of the UL and the mapping are applied, and when the capability information has not been received, controls the reception of the PUSCH to which the parameters used in the PUSCH transmission power control determined according to the setting are applied. The setting includes an identifier of a PUSCH path loss reference reference signal, i.e., a path loss reference RS, and a closed-loop index.

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