Terminal, wireless communication method, base station and system

Abstract

The terminal according to an embodiment of the present disclosure has: a reception unit that receives downlink control information (DCI) including specific information different from a measurement reference signal resource identifier (SRI), and receives, through higher layer signaling, mapping between the specific information and a parameter relating to uplink shared channel (PUSCH) transmission power control; and a control unit that determines a parameter used in PUSCH transmission power control on the basis of the specific information and the mapping. According to the embodiment of the present disclosure, a parameter relating to UL transmission power control can be suitably determined.

Description

[Technical field]

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

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

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

[0004] [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 [Problem to be solved by the invention]

[0005] In future wireless communication systems (e.g., NR after Rel. 17), an Uplink Transmission Configuration Indication state (UL TCI state) is being considered as an uplink (UL) beam indication method for user terminals (user equipment (UE)).

[0006] However, there is still no research on how the UE determines parameters related to UL transmit power control, taking into account the UL TCI state and spatial relationship information that are expected to be adopted in future wireless communication systems. If the parameters related to UL transmit power control cannot be determined appropriately, there is a risk of communication throughput decreasing.

[0007] Therefore, the present disclosure provides a terminal and a wireless communication method capable of appropriately determining parameters related to UL transmission power control. 、 base station and systems One of the aims is to provide. [Means for solving the problem]

[0008] A terminal according to an embodiment of the present disclosure includes: A transmitter that reports capability information supporting a transmission configuration indication (TCI) state of an uplink (UL), and T.C. I-type receiving downlink control information (DCI) indicating an identifier of the state of the UL an identifier for the TCI state; UL A receiving unit that receives mapping with parameters related to a shared channel (PUSCH) transmission power control by higher layer signaling; When the capability information is reported, The above UL Based on the TCI state identifier and the mapping, The above Determine parameters to be used for PUSCH transmission power control and, when the capability information is not reported, determining a parameter to be used for the PUSCH transmission power control based on a power control setting of the PUSCH by a measurement reference signal resource indicator (SRI). A control unit for controlling the The configuration includes a PUSCH path loss reference signal (RS) identifier and a closed loop index. . Effect of the Invention

[0009] According to one aspect of the present disclosure, parameters related to UL transmission power control can be appropriately determined. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram showing an example of information elements regarding existing TCI states. [Diagram 2] Fig. 2A is a diagram showing an example of existing PUCCH spatial relationship information, and Fig. 2B is a diagram showing an example of existing SRS spatial relationship information. [Diagram 3] 3A and 3B are diagrams illustrating an example of information regarding the spatial relationship between a reference RS and a target RS. [Figure 4] FIG. 4 is a diagram showing PUCCH spatial relationship information in Rel.16. [Diagram 5] FIG. 5 is a diagram showing PUCCH power control information in Rel.16. [Figure 6] FIG. 6 is a diagram showing an example of a PUCCH power control information element in aspect 1-1. [Figure 7] FIG. 7 is a diagram showing an example of a ULTCI-PUCCH mapping setting information element in aspect 1-1. [Figure 8] FIG. 8 is a diagram showing a first example of spatial relationship information in aspect 1-2. [Figure 9] FIG. 9 is a diagram showing a second example of the spatial relationship information in aspect 1-2. [Figure 10] FIG. 10 is a diagram illustrating an example of parameters related to power control of the PUSCH in Rel.16. [Figure 11] FIG. 11 is a diagram illustrating an example of parameters related to power control of the PUSCH in aspect 2-2. [Figure 12] FIG. 12 is a diagram illustrating an example of a PUSCH power control information element in example 2-3. [Figure 13]FIG. 13 is a diagram illustrating an example of a ULTCI-PUSCH mapping configuration information element in aspect 2-3. [Figure 14] FIG. 14 is a diagram showing an example of parameters related to power control of SRS in Rel. 16. [Figure 15] Fig. 15A is a diagram showing path loss reference RS configuration information in example 3-1, and Fig. 15B is a diagram showing spatial relationship information in example 3-1. [Figure 16] FIG. 16 is a diagram showing spatial relationship information in aspect 3-2. [Figure 17] FIG. 17 is a diagram showing ULTCI path loss reference RS configuration information in aspect 3-3. [Figure 18] Fig. 18A is a diagram showing ULTCI path loss reference RS configuration information in example 3-4, and Fig. 18B is a diagram showing ULTCI path loss RS mapping configuration information in example 3-4. [Figure 19] FIG. 19 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 20] FIG. 20 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 21] FIG. 21 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 22] FIG. 22 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (TCI, spatial relations, QCL) In NR, it is considered that a UE will control reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and encoding) of at least one of a signal and a channel (which may be expressed as signal / channel. In this disclosure, "A / B" may similarly be read as "at least one of A and B") based on a transmission configuration indication state (TCI state).

[0012] The TCI state may represent a state that is applied to a downlink signal / channel. The equivalent of the TCI state that is applied to an uplink signal / channel may be expressed as a spatial relation.

[0013] The TCI state is information on the Quasi-Co-Location (QCL) of signals / channels, and may be called spatial reception parameters, spatial relation information, etc. The TCI state may be configured in the UE for each channel or for each signal.

[0014] A QCL is an index that indicates the statistical properties of a signal / channel. For example, when a signal / channel and another signal / channel are in a QCL relationship, it may mean that it can be assumed that at least one of the following is the same (QCL with respect to at least one of the following) between these different signals / channels: Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter).

[0015] In addition, the spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be specified based on a spatial QCL. A QCL (or at least one element of a QCL) in the present disclosure may be replaced with a spatial QCL (sQCL).

[0016] A plurality of types (QCL types) of QCL may be defined. For example, four QCL types AD may be provided, each having different parameters (or parameter sets) that can be assumed to be the same. The parameters (which may be called QCL parameters) are as follows: QCL Type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread, QCL type B (QCL-B): Doppler shift and Doppler spread, QCL type C (QCL-C): Doppler shift and mean delay, · QCL type D (QCL-D): spatial reception parameters.

[0017] Types A to C may correspond to QCL information related to at least one of time and frequency synchronization processing, and type D may correspond to QCL information related to beam control.

[0018] The UE's assumption that a given Control Resource Set (CORESET), channel, or reference signal is in a particular QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be referred to as a QCL assumption.

[0019] The UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for a signal / channel based on the TCI condition or QCL assumptions of the signal / channel.

[0020] The TCI state may be, for example, information about the QCL between a target channel (or a Reference Signal (RS) for the channel) and another signal (e.g., another Downlink Reference Signal (DL-RS)). The TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination of these.

[0021] In the present disclosure, higher layer signaling may be, for example, any one or a combination of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like.

[0022] The MAC signaling may be, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0023] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0024] In addition, the channel / signal to which the TCI state is applied may be called a target channel / RS or simply a target, and the other signal may be called a reference RS or simply a reference.

[0025] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0026] In addition, the RS that has a QCL relationship with the channel may be, for example, at least one of a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a tracking CSI-RS (also called a tracking reference signal (TRS)), and a QCL detection reference signal (also called a QRS).

[0027] An SSB is a signal block including at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). An SSB may be referred to as an SS / PBCH block.

[0028] The UE may receive configuration information including a list of information elements of the TCI states (eg, PDSCH-Config, tci-StatesToAddModList) through higher layer signaling.

[0029] An information element of the TCI state set by higher layer signaling ("TCI-state IE" of RRC) may include a TCI state ID and one or more pieces of QCL information ("QCL-Info"). The QCL information may include at least one of information on an RS having a QCL relationship (RS relationship information) and information indicating a QCL type (QCL type information). The RS relationship information may include information such as an index of the RS (e.g., an SSB index, a Non-Zero-Power (NZP) CSI-RS resource identifier), an index of a cell in which the RS is located, an index of a Bandwidth Part (BWP) in which the RS is located, etc.

[0030] In Rel.15 NR, both the QCL type A RS and the QCL type D RS, or only the QCL type A RS, can be configured for a UE as at least one TCI state of the PDCCH and the PDSCH.

[0031] When the TRS is configured as the RS of QCL type A, unlike the demodulation reference signal (DMRS) of the PDCCH or PDSCH, the same TRS is expected to be transmitted periodically over a long period of time. The UE can measure the TRS and calculate the average delay, delay spread, etc.

[0032] A UE in which the TRS is set as a QCL type A RS in the TCI state of the DMRS of PDCCH or PDSCH can assume that the parameters of the QCL type A of the DMRS of PDCCH or PDSCH and the parameters of the QCL type A of the TRS (average delay, delay spread, etc.) are the same, and can therefore obtain the parameters of the DMRS of PDCCH or PDSCH type A (average delay, delay spread, etc.) from the measurement result of the TRS. When performing channel estimation of at least one of the PDCCH and the PDSCH, the UE can perform more accurate channel estimation by using the measurement result of the TRS.

[0033] A UE configured with QCL-Type D RS can determine a UE receive beam (spatial domain receive filter, UE spatial domain receive filter) using the QCL-Type D RS.

[0034] The RS of QCL-Type X in a TCI state may mean an RS that is related to a certain channel / signal (its DMRS) and QCL-Type X, and this RS may also be called the QCL source of QCL-Type X in the TCI state.

[0035] FIG. 1 is a diagram showing an example of an information element related to an existing TCI state. Using an information element as shown in FIG. 1, a UE may receive information related to the TCI state.

[0036] <Spatial Relation for PUCCH> A UE may be configured with parameters (PUCCH configuration information, PUCCH-Config) used for PUCCH transmission by upper layer signaling (e.g., Radio Resource Control (RRC) signaling). The PUCCH configuration information may be configured for each partial band (e.g., Bandwidth Part (BWP)) within a carrier (also referred to as a cell or a Component Carrier (CC)).

[0037] The PUCCH configuration information may include a list of PUCCH resource set information (e.g., PUCCH-ResourceSet) and a list of PUCCH spatial relation information (e.g., PUCCH-SpatialRelationInfo).

[0038] The PUCCH resource set information may include a list (e.g., resourceList) of PUCCH resource indices (IDs, e.g., PUCCH-ResourceId).

[0039] Also, when the UE does not have dedicated PUCCH resource configuration information (e.g., dedicated PUCCH resource configuration) provided by PUCCH resource set information in the PUCCH configuration information (before RRC setup), the UE may determine a PUCCH resource set based on a parameter (e.g., pucch-ResourceCommon) in system information (e.g., System Information Block Type1 (SIB1) or Remaining Minimum System Information (RMSI)). The PUCCH resource set may include 16 PUCCH resources.

[0040] On the other hand, when the UE has the dedicated PUCCH resource configuration information (UE dedicated uplink control channel configuration, dedicated PUCCH resource configuration) (after RRC setup), the UE may determine a PUCCH resource set according to the number of UCI information bits.

[0041] The UE determines the value of a predetermined field (e.g., a PUCCH resource indicator field) in the Downlink Control Information (DCI) (e.g., DCI format 1_0 or 1_1 used for scheduling the PDSCH) and the number of CCEs (N) in a control resource set (CONTROLL REsource SET (CORESET)) for receiving the PDCCH carrying the DCI. CCE ) and the index (n CCE,0 ), and may determine one PUCCH resource (index) in the PUCCH resource set (eg, a PUCCH resource set that is cell-specific or determined individually for the UE).

[0042] The PUCCH spatial relationship information (e.g., the RRC information element "PUCCH-spatialRelationInfo") may indicate multiple candidate beams (spatial domain filters) for PUCCH transmission. The PUCCH spatial relationship information may indicate a spatial relationship between a Reference signal (RS) and the PUCCH.

[0043] 2A is a diagram showing an example of existing PUCCH spatial relationship information. Using information such as that shown in FIG. 2A (eg, an RRC information element), a UE may receive the PUCCH spatial relationship information.

[0044] In addition, in this disclosure, the terms index, ID, indicator, resource ID, etc. may be read as interchangeable.

[0045] The list of PUCCH spatial relationship information may include several elements (PUCCH spatial relationship information IEs (Information Elements)). Each PUCCH spatial relationship information may include at least one of an index (ID, e.g., pucch-SpatialRelationInfoId) of the PUCCH spatial relationship information, an index (ID, e.g., servingCellId) of a serving cell, and information on an RS (reference RS) that has a spatial relationship with the PUCCH.

[0046] For example, the information about the RS may be an SSB index, a CSI-RS index (e.g., an NZP-CSI-RS resource configuration ID), or an SRS resource ID and an ID of a BWP. The SSB index, the CSI-RS index, and the SRS resource ID may be associated with at least one of a beam, a resource, and a port selected by measurement of the corresponding RS.

[0047] When more than one piece of spatial relation information regarding PUCCH is configured for the UE, the UE may control such that, based on the PUCCH spatial relation Activation / Deactivation MAC CE, one piece of PUCCH spatial relation information becomes active for one PUCCH resource at a certain time.

[0048] The PUCCH spatial relation Activation / Deactivation MAC CE of Rel.15 NR is represented by a total of 3 octets (8 bits × 3 = 24 bits) in octets 1 - 3.

[0049] The said MAC CE may include information such as the serving cell ID to which it applies ("Serving Cell ID" field), BWP ID ("BWP ID" field), PUCCH resource ID ("PUCCH Resource ID" field), etc.

[0050] Also, the said MAC CE includes the field of "S i "(i = 0 - 7). When the field of a certain S i indicates 1, the UE activates the spatial relation information of spatial relation information ID#i. When the field of a certain S i indicates 0, the UE deactivates the spatial relation information of spatial relation information ID#i.

[0051] The UE may activate the PUCCH relation information specified by the said MAC CE 3 ms after transmitting an acknowledgement (ACK) for the MAC CE that activates a predetermined PUCCH spatial relation information.

[0052] <Spatial relation for SRS, PUSCH> The UE may receive information (SRS configuration information, for example, parameters in the RRC control element "SRS-Config") used to transmit a measurement reference signal (for example, a Sounding Reference Signal (SRS)).

[0053] Specifically, the UE may receive at least one of information regarding one or more SRS resource sets (SRS resource set information, e.g., the RRC control element "SRS-ResourceSet") and information regarding one or more SRS resources (SRS resource information, e.g., the RRC control element "SRS-Resource").

[0054] An SRS resource set may be associated with (group together) a number of SRS resources, each of which may be identified by an SRS Resource Indicator (SRI) or SRS Resource Identifier (ID).

[0055] The SRS resource set information may include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and information on SRS usage.

[0056] Here, the SRS resource type may indicate any one of periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), and aperiodic SRS (A-SRS, AP-SRS). Note that the UE may transmit the P-SRS and SP-SRS periodically (or periodically after activation) and transmit the A-SRS based on an SRS request of the DCI.

[0057] Furthermore, the use (RRC parameter "usage" and L1 (Layer-1) parameter "SRS-SetUse") may be, for example, beam management, codebook-based transmission (codebook: CB), non-codebook-based transmission (nonCodebook: NCB), antenna switching, etc. The SRS for the use of codebook-based transmission or non-codebook-based transmission may be used to determine a precoder for codebook-based or non-codebook-based PUSCH transmission based on the SRI.

[0058] For example, the UE may determine a precoder for PUSCH transmission based on the SRI, a Transmitted Rank Indicator (TRI), and a Transmitted Precoding Matrix Indicator (TPMI) in the case of codebook-based transmission. The UE may determine a precoder for PUSCH transmission based on the SRI in the case of non-codebook-based transmission.

[0059] The SRS resource information may include an SRS resource ID (SRS-ResourceId), an SRS port number, an SRS port number, a transmission Comb, an SRS resource mapping (e.g., time and / or frequency resource position, resource offset, resource period, repetition number, SRS symbol number, SRS bandwidth, etc.), hopping related information, an SRS resource type, a sequence ID, spatial relationship information of the SRS, etc.

[0060] The spatial relationship information of the SRS (e.g., the RRC information element "spatialRelationInfo") may indicate spatial relationship information between a predetermined reference signal and the SRS. The predetermined reference signal may be at least one of a Synchronization Signal / Physical Broadcast Channel (SS / PBCH) block, a Channel State Information Reference Signal (CSI-RS), and an SRS (e.g., another SRS). The SS / PBCH block may be referred to as a Synchronization Signal Block (SSB).

[0061] 2B is a diagram showing an example of spatial relationship information of an existing SRS. Using information (eg, an RRC information element) as shown in FIG 2B, a UE may receive spatial relationship information of an SRS.

[0062] The spatial relationship information of the SRS may include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the predetermined reference signal.

[0063] In the present disclosure, the SSB index, the SSB resource ID, and the SSBRI (SSB Resource Indicator) may be interchangeable. Also, the CSI-RS index, the CSI-RS resource ID, and the CRI (CSI-RS Resource Indicator) may be interchangeable. Also, the SRS index, the SRS resource ID, and the SRI may be interchangeable.

[0064] The spatial relationship information of the SRS may include a serving cell index, a BWP index (BWP ID), etc., corresponding to the above-mentioned predetermined reference signal.

[0065] In NR, the transmission of an uplink signal may be controlled based on the presence or absence of Beam Correspondence (BC). BC may be, for example, the ability of a node (e.g., a base station or a UE) to determine a beam (transmitting beam, Tx beam) to be used for transmitting a signal based on a beam (receiving beam, Rx beam) to be used for receiving the signal.

[0066] In addition, BC may also be called transmit / receive beam correspondence (Tx / Rx beam correspondence), beam reciprocity, beam calibration, calibrated / non-calibrated, reciprocity calibrated / non-calibrated, correspondence, agreement, etc.

[0067] For example, in the absence of BC, the UE may transmit an uplink signal (e.g., PUSCH, PUCCH, SRS, etc.) using the same beam (spatial domain transmit filter) as the SRS (or SRS resource) instructed by the base station based on measurement results of one or more SRSs (or SRS resources).

[0068] On the other hand, when BC is present, the UE may transmit an uplink signal (e.g., PUSCH, PUCCH, SRS, etc.) using a beam (spatial domain transmit filter) that is the same as or corresponds to the beam (spatial domain receive filter) used to receive a specified SSB or CSI-RS (or CSI-RS resource).

[0069] When the UE is configured with spatial relationship information regarding the SSB or CSI-RS and the SRS for a certain SRS resource (e.g., with BC), the UE may transmit the SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter for receiving the SSB or CSI-RS (spatial domain receive filter). In this case, the UE may assume that the UE receive beam for the SSB or CSI-RS and the UE transmit beam for the SRS are the same.

[0070] When the UE is configured with spatial relationship information regarding a certain SRS (target SRS) resource between another SRS (reference SRS) and the SRS (target SRS) (e.g., without BC), the UE may transmit the target SRS resource using the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain transmit filter) for transmitting the reference SRS. That is, in this case, the UE may assume that the UE transmit beam of the reference SRS and the UE transmit beam of the target SRS are the same.

[0071] The UE may determine the spatial relationship of the PUSCH scheduled by the DCI (e.g., DCI format 0_1) based on a value of a predetermined field (e.g., an SRS resource identifier (SRI) field) in the DCI. Specifically, the UE may use spatial relationship information of the SRS resource (e.g., the RRC information element "spatialRelationInfo") determined based on the value of the predetermined field (e.g., the SRI) for PUSCH transmission.

[0072] When codebook-based transmission is used for PUSCH, two SRS resources may be configured for the UE by RRC, and one of the two SRS resources may be indicated by DCI (a 1-bit predetermined field). When non-codebook-based transmission is used for PUSCH, four SRS resources may be configured for the UE by RRC, and one of the four SRS resources may be indicated by DCI (a 2-bit predetermined field). In order to use a spatial relationship other than the two or four spatial relationships configured by RRC, RRC reconfiguration is required.

[0073] In addition, the DL-RS can be configured for the spatial relationship of the SRS resources used for the PUSCH. For example, for the SP-SRS, the UE can be configured by the RRC with the spatial relationship of multiple (e.g., up to 16) SRS resources, and one of the multiple SRS resources can be indicated by the MAC CE.

[0074] <ul tci状態> In future wireless communication systems (e.g., NR after Rel.17), the use of the UL TCI state as a UL beam indication method is being considered. The UL TCI state is similar to the notification of the DL beam (DL TCI state) of the UE. Note that the DL TCI state may be read as the TCI state for PDCCH / PDSCH and vice versa.

[0075] The channel / signal (which may be referred to as a target channel / RS) to which the UL TCI state is set (specified) may be, for example, at least one of a PUSCH (DMRS of PUSCH), a PUCCH (DMRS of PUCCH), a random access channel (Physical Random Access Channel (PRACH)), an SRS, etc.

[0076] Furthermore, the RS (source RS) that has a QCL relationship with the channel / signal may be, for example, a DL RS (e.g., SSB, CSI-RS, TRS, etc.) or a UL RS (e.g., SRS, SRS for beam management, etc.).

[0077] In the UL TCI state, an RS that has a QCL relationship with the channel / signal may be associated with a panel ID for receiving or transmitting the RS. The association may be explicitly configured (or specified) or implicitly determined by higher layer signaling (e.g., RRC signaling, MAC CE, etc.).

[0078] The correspondence between the RS and the panel ID may be set by being included in the UL TCI state information, or may be set by being included in at least one of the resource setting information, spatial relationship information, and the like of the RS.

[0079] The QCL type indicated by the UL TCI state may be the existing QCL type AD or may be another QCL type, and may include a predefined spatial relationship, associated antenna ports (port index), etc.

[0080] When a UE is assigned an associated panel ID for a UL transmission (e.g., assigned by DCI), the UE may perform the UL transmission using a panel corresponding to the panel ID. The panel ID may be associated with a UL TCI state, and when a UE is assigned (or activated) a UL TCI state for a given UL channel / signal, the UE may identify the panel to use for the UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0081] (Multi-TRP) In NR, one or more transmission / reception points (TRPs) (multi-TRPs) are considered to perform DL transmission to a UE using one or more panels (multi-panels). Also, it is considered that a UE performs UL transmission to one or more TRPs.

[0082] Note that multiple TRPs may correspond to the same cell identifier (cell identifier (ID)) or different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0083] Each TRP of the multi-TRP may transmit a different code word (CW) and a different layer. As one form of multi-TRP transmission, non-coherent joint transmission (NCJT) is being considered.

[0084] In NCJT, for example, TRP1 modulates and maps the first codeword, layer-maps it, and transmits the first PDSCH using the first precoding for the first number of layers (e.g., 2 layers). Also, TRP2 modulates and maps the second codeword, layer-maps it, and transmits the second PDSCH using the second precoding for the second number of layers (e.g., 2 layers). These first PDSCH and second PDSCH may be assumed to be not quasi-co-located (not in a Quasi-Co-Location (QCL) relationship).

[0085] Note that multiple PDSCHs subject to NCJT may be defined to partially or completely overlap with respect to at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap in at least one of the time and frequency resources.

[0086] (Pathloss reference RS) The pathloss reference reference signal (RS) (pathloss reference RS, RS for pathloss measurement) is used for calculating the pathloss for PUSCH / PUCCH / SRS. In Rel.15 NR, the maximum number of pathloss reference RSs is 4. In other words, the UE does not expect to simultaneously hold more than 4 pathloss reference RSs per serving cell for all PUSCH / PUCCH / SRS transmissions.

[0087] (Transmission power control) <Transmission power control for PUSCH> In NR, the transmission power of the PUSCH is controlled based on the TPC command (also referred to as a value, increment / decrement value, correction value, etc.) indicated by the value in a predetermined field (also referred to as the TPC command field, etc.) in the DCI.

[0088] For example, when a UE transmits a PUSCH on an active UL BWP b of a carrier f of a serving cell c using a parameter set (open loop parameter set) with index j and a power control adjustment state index l, the transmission power (P PUSCH、b,f,c (i,j,q d , l) may be expressed by the following formula (1).

[0089] Here, the power control adjustment state may be configured to have multiple states (e.g., two states) or a single state by a higher layer parameter. In addition, when multiple power control adjustment states are configured, one of the multiple power control adjustment states may be identified by an index l (e.g., l∈{0,1}). The power control adjustment state may be called a PUSCH power control adjustment state, a first or second state, etc.

[0090] Furthermore, the PUSCH transmission opportunity i is a predetermined period during which the PUSCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0091]

number

[0092] In formula (1), P CMAX,f,c(i) is, for example, the transmission power of the user equipment (also called maximum transmission power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i. O_PUSCH,b,f,c (j) is, for example, a parameter related to a target received power set for an active UL BWP b of a carrier f of a serving cell c in a parameter set configuration j (e.g., a parameter related to a transmit power offset, a transmit power offset P0, a target received power parameter, etc.).

[0093] M PUSCH RB,b,f,c (i) is the number of resource blocks (bandwidth) allocated to PUSCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (j) is a value provided by a higher layer parameter (e.g., also called msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0094] PL b,f,c (q d ) is, for example, the index q of the reference signal for the downlink BWP (path loss reference RS, DL RS for path loss measurement, PUSCH-PathlossReferenceRS) associated with the active UL BWP b of the carrier f of the serving cell c. d is the path loss (path loss compensation) calculated at the user terminal using

[0095] Δ TF,b,f,c (i) is the transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0096] f b,f,c (i,l) is the TPC command-based value (e.g., power control adjustment state, accumulated value of TPC commands, closed loop value) of the power control adjustment state index l of the active UL BWP of carrier f of serving cell c and transmission opportunity i. For example, f b,f,c (i, l) may be expressed by equation (2), where l may be called the closed-loop index.

[0097]

number

[0098] In formula (2), δ PUSCH,b,f,c (i last ,i,K PUSCH , l) is, for example, the previous PUSCH transmission opportunity i last The TPC command may be a TPC command indicated by a TPC command field value in a DCI (e.g., DCI format 0_0 or 0_1) detected in an active UL BWP b of carrier f of serving cell c for a transmission opportunity i after the transmission opportunity i, or a TPC command indicated by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled with a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI) (CRC-scrambled).

[0099] If the UE is not provided with a path loss reference RS (e.g., PUSCH-PathlossReferenceRS) or if the UE is not provided with dedicated higher layer parameters, the UE may use RS resources from the SSB used to obtain the Master Information Block (MIB) to obtain the PL. b,f,c (q d ) may be calculated.

[0100] When the UE is configured with a number of RS resource indexes up to a value of a maximum number of pathloss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRS) and a set of respective RS configurations for the RS resource indexes according to the pathloss reference RSs, the set of RS resource indexes may include one or both of a set of SS / PBCH block indexes and a set of CSI-RS resource indexes. The UE may select RS resource index q in the set of RS resource indexes. d may be identified.

[0101] If a PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE shall use the same RS resource index q as for the corresponding PRACH transmission. d may also be used.

[0102] If the UE is provided with a configuration of PUSCH power control by SRI (e.g., SRI-PUSCH-PowerControl) and one or more values ​​of the ID of the pathloss reference RS, it may obtain a mapping between a set of values ​​for the SRI field in DCI format 0_1 ​​and a set of ID values ​​of the pathloss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may derive the RS resource index q from the ID of the pathloss reference RS mapped to the SRI field value in DCI format 0_1 ​​that schedules the PUSCH. d may be determined.

[0103] If a PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with PUCCH spatial relationship information for the PUCCH resource with the lowest index for the active UL BWP b of each carrier f and serving cell c, the UE shall select the PUCCH resource with the same RS resource index q as the PUCCH transmission in that PUCCH resource. d may also be used.

[0104] If a PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with spatial settings of PUCCH transmission, or if a PUSCH transmission is scheduled by DCI format 0_1 ​​that does not include an SRI field, or if the UE is not provided with a power control setting of PUSCH by SRI, the UE shall select RS resource index q with an ID of a path loss reference RS of zero. d may also be used.

[0105] For PUSCH transmission configured by a configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration includes a predetermined parameter (e.g., rrc-CofiguredUplinkGrant), the RS resource index q is determined by the path loss reference index (e.g., pathlossReferenceIndex) within the predetermined parameter. d may be provided to the UE.

[0106] For PUSCH transmission configured by a configured grant configuration, if the configured grant configuration does not include a predetermined parameter, the UE determines the RS resource index q from the value of the ID of the path loss reference RS mapped to the SRI field within the DCI format that activates the PUSCH transmission. d If the DCI format does not include an SRI field, the UE may determine the RS resource index q having an ID of a path loss reference RS of zero. d may be determined.

[0107] Note that the formulas (1) and (2) are merely examples and are not limited thereto. The user equipment may control the transmission power of the PUSCH based on at least one parameter exemplified in the formulas (1) and (2), and additional parameters may be included or some parameters may be omitted. Also, in the above formulas (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 this is not limiting. At least a part of the serving cell, carrier, BWP, and power control adjustment state may be omitted.

[0108] <PUCCH Transmission Power Control> Also, 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 predetermined field (also referred to as TPC command field, first field, etc.) within the DCI.

[0109] For example, the index l of the power control adjustment state is used to calculate the transmission power (P PUCCH、b,f,c (i,q u ,q d , l) may be expressed by the following formula (3).

[0110] The power control adjustment state may be referred to as a PUCCH power control adjustment state, a first or second state, and so on.

[0111] Furthermore, a PUCCH transmission opportunity i is a predetermined period during which a PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0112]

number

[0113] In equation (3), P CMAX,f,c (i) is, for example, the transmission power of the user equipment (also called maximum transmission power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i. O_PUCCH,b,f,c (q u ) is, for example, a parameter related to a target received power set for an active UL BWP b of a carrier f of a serving cell c at a transmission opportunity i (e.g., a parameter related to a transmit power offset, also referred to as a transmit power offset P0 or a target received power parameter, etc.).

[0114] M PUCCH RB,b,f,c (i) is the number of resource blocks (bandwidth) allocated to PUCCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (q d ) is, for example, the index q of the reference signal for the downlink BWP (path loss reference RS, DL RS for path loss measurement, PUCCH-PathlossReferenceRS) associated with the active UL BWP b of the carrier f of the serving cell c. d is the path loss calculated at the user terminal using

[0115] Δ F_PUCCH (F) is a higher layer parameter given for each PUCCH format. Δ TF,b,f,c (i) is the transmission power adjustment component (offset) for UL BWP b of carrier f of serving cell c.

[0116] g b,f,c (i,l) is the TPC command-based value (e.g., power control adjustment state, accumulated value of TPC commands, value by closed loop, PUCCH power adjustment state) of the power control adjustment state index l of the active UL BWP of carrier f of serving cell c and transmission opportunity i. For example, g b,f,c (i,l) may be expressed by equation (4).

[0117]

number

[0118] In formula (4), δ PUCCH,b,f,c (i last ,i,K PUCCH , l) is, for example, the previous PUCCH transmission opportunity i last The TPC command may be a TPC command indicated by a TPC command field value in a DCI (e.g., DCI format 1_0 or 1_1) detected in an active UL BWP b of carrier f of serving cell c for a transmission opportunity i after a transmission opportunity i, or a TPC command indicated by a TPC command field value in a DCI (e.g., DCI format 2_2) having CRC parity bits scrambled with a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUCCH-RNTI) (CRC-scrambled).

[0119] If 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}; if the UE is not provided with information indicating the use of two power control adjustment states for PUCCH or spatial relationship information for PUCCH, l=0.

[0120] If the UE obtains the TPC command values ​​from DCI format 1_0 or 1_1, and if the UE is provided with PUCCH spatial relation information, the UE may obtain a mapping between the PUCCH spatial relation information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) by an index provided by the P0 ID for PUCCH (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). If the UE receives an activation command including a value of the PUCCH spatial relation information ID, the UE may determine the value of the closed-loop index that provides the value of l through a link to the corresponding P0 ID for PUCCH.

[0121] If the UE has an active UL BWP b for carrier f in serving cell c, then it has P O_PUCCH,b,f,c (q u ) If the value setting is provided by the upper layer, g b,f,c (i, l) = 0, k = 0, 1, …, i. If the UE provides PUCCH spatial relation information, the UE u Based on the PUCCH P0 ID corresponding to q, the closed-loop index value corresponding to l, and the PUCCH spatial relation information associated therewith, the UE may determine the value of l from the value of q. u

[0122] q u may be the PUCCH P0 ID (p0-PUCCH-Id) indicating the PUCCH P0 (P0-PUCCH) within the PUCCH P0 set (p0-Set).

[0123] Note that formulas (3) and (4) are merely examples and are not limited thereto. The user equipment may control the transmission power of the PUCCH based on at least one of the parameters exemplified in formulas (3) and (4), and additional parameters may be included or some parameters may be omitted. Also, in the above formulas (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 this is not limiting. At least some of the serving cell, carrier, BWP, and power control adjustment state may be omitted.

[0124] <Transmission Power Control for SRS> For example, using the index l of the power control adjustment state, the transmission power (P SRS、b,f,c (i, q s , l)) of the SRS in the SRS transmission occasion (also referred to as the transmission period, etc.) i for the active UL BWP b of the carrier f of the serving cell c may be represented by the following formula (5).

[0125] The power control adjustment state may be referred to as an SRS power control adjustment state, a value based on TPC commands, an accumulated value of TPC commands, a value due to closed loop, a first or second state, etc. l may be referred to as a closed loop index.

[0126] Furthermore, the SRS transmission opportunity i is a predetermined period during which the SRS is transmitted, and may be composed of, for example, one or more symbols, one or more slots, etc.

[0127]

number

[0128] In equation (5), P CMAX,f,c (i) is, for example, the UE maximum output power for carrier f of serving cell c at SRS transmission opportunity i. P O_SRS,b,f,c (q s ) represents the active UL BWP b of carrier f in serving cell c and the SRS resource set q s (provided by SRS-ResourceSet and SRS-ResourceSetId), and a parameter relating to the target received power provided by p0 for (for example, a parameter relating to a transmission power offset, also referred to as a transmission power offset P0 or a target received power parameter, etc.).

[0129] M SRS,b,f,c (i) is the SRS bandwidth in number of resource blocks for SRS transmission opportunity i on active UL BWP b of carrier f with serving cell c and subcarrier spacing μ;

[0130] α SRS,b,f,c (q s ) is the active UL BWP b of serving cell c and carrier f with subcarrier spacing μ and SRS resource set q s and α (e.g., alpha) for

[0131] PL b,f,c (q d ) is the active DL BWP of serving cell c and the SRS resource set q s For,,, the RS resource index q d is the DL path loss estimate [dB] calculated by the UE using the RS resource index q d is the SRS resource set q s and a pathloss reference RS (provided by a DL RS for pathloss measurement, e.g., pathlossReferenceRS) associated with the SS / PBCH block index (e.g., ssb-Index) or a CSI-RS resource index (e.g., csi-RS-Index).

[0132] h b,f,c (i,l) is the SRS power control adjustment state for the active UL BWP of carrier f of serving cell c and SRS transmission opportunity i. If the SRS power control adjustment state configuration (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for SRS transmission and PUSCH transmission, the current PUSCH power control adjustment state f b,f,c On the other hand, if the SRS power control adjustment state setting indicates independent power control adjustment states for SRS transmission and PUSCH transmission, and the TPC accumulation setting is not provided, the SRS power control adjustment state h b,f,c (i) may be expressed by equation (6).

[0133]

number

[0134] In formula (6), δ SRS,b,f,c (m) is coded together with other TPC commands in a PDCCH with DCI (e.g., DCI format 2_3). SRS,b,f,c (m) is the K of SRS transmission opportunities i-i0 on the active UL BWP b of carrier f with serving cell c and subcarrier spacing μ SRS (i-i0)-1 symbols ago and K SRS (i) The cardinality c(S i ) a set of TPC command values ​​S i where i0>0 is the sum of the TPC commands in K for SRS transmission opportunity i-i0. SRS The (i-i0)-1 symbol before is K SRS (i) The smallest integer that is earlier than the symbol before.

[0135] Note that formulas (5) and (6) are merely examples and are not limited thereto. The user terminal only needs to control the transmission power of the SRS based on at least one parameter exemplified in formulas (5) and (6), and additional parameters may be included or some parameters may be omitted. In addition, in the above formulas (5) and (6), the transmission power of the SRS is controlled for each BWP of a certain carrier of a certain cell, but this is not limited thereto. At least some of the cell, carrier, BWP, and power control adjustment state may be omitted.

[0136] (Power control setting instructions) In Rel.15 NR, the SRI field in the DCI allows switching between multiple states of open-loop (OL)-TPC or closed-loop (CL)-TPC to track changes in spatial relationships. If 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 if the usage of the SRS resource set is nonCodebook transmission, the maximum number of SRI field values ​​is 4 (the SRI field length is 2 bits).

[0137] In order to set the power control setting for the PUSCH, a list (sri-PUSCH-MappingToAddModList) of power control settings (SRI-PUSCH-PowerControl) to be mapped to the SRI field value is included in the PUSCH power control information (PUSCH-PowerControl) in the PUSCH setting information (PUSCH-Config). 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 a path loss reference RS, a P0-α set ID (sri-P0-PUSCH-AlphaSetId) indicating a set of P0 and α, and a closed loop (CL) ID (sri-PUSCH-ClosedLoopIndex) corresponding to the power control state l.

[0138] At least one of the path loss reference RS ID, the P0-α set ID, and the closed loop ID may be referred to as a power control (transmit power control, TPC) parameter. At least one of the path loss reference RS ID and the P0-α set ID may be referred to as an OL power control (TPC) parameter since they are used for open loop (OL) power control. The closed loop ID may be referred to as a CL power control (TPC) parameter since they are used for closed loop (CL) power control.

[0139] For example, a power control setting #0 including P0#0, α#0, path loss reference RS#0, and power control adjustment state #0 (l=0) may be associated with an SRI field value 0, and a power control setting #1 including P0#1, α#1, path loss reference RS#1, and power control adjustment state #1 (l=1) may be associated with an SRI field value 1. The UE is instructed of the associated power control setting by the SRI field.

[0140] If a UE is configured with only one SRS resource, the SRI field length is 0 bits.

[0141] In order to set the power control setting for the PUCCH, the power control setting (PUCCH-PowerControl) is included in the PUCCH setting information (PUCCH-Config). The power control setting includes a correction value Δ F_PUCCH (F) (deltaF-PUCCH-f0, deltaF-PUCCH-f1, deltaF-PUCCH-f2, deltaF-PUCCH-f3, deltaF-PUCCH-f4), a set of P0 (p0-Set), a set of pathloss reference RSs (pathlossReferenceRSs), and information indicating whether to use two PUCCH power adjustment states (twoPUCCH-PC-AdjustmentStates). The pathloss reference RS may be represented by an SSB index (SSB-Index) or a CSI-RS (NZP-CSI-RS resource ID (NZP-CSI-RS-ResourceId)).

[0142] In this way, in Rel.15 NR, it is possible to switch power control settings.

[0143] (Spatial relationship between reference RS and target RS) The UE may receive information regarding the newly defined spatial relationship (or QCL setting) between the reference RS and the target RS from the network (NW, e.g., gNB).

[0144] The UE may determine the UL beam that the UE will use based on the newly defined information regarding the spatial relationship between the reference RS and the target RS.

[0145] For example, the UE receives information from the NW regarding the newly defined spatial relationship (TCI state) between the reference RS and the target RS.

[0146] The UE then determines the UL beam to be used by the UE based on the newly defined information on the spatial relationship (TCI state) between the reference RS and the target RS, and performs UL transmission to the NW.

[0147] In the present disclosure, newly defined information regarding the spatial relationship between the reference RS and the target RS may be read as information regarding the UL TCI state, information regarding the TCI state common to DL and UL, and the like.

[0148] Here, a method for notifying a UE of information on the spatial relationship between a reference RS and a target RS (or QCL setting), which is newly defined as a framework of the new UL TCI, will be described. Also, application of the information on the spatial relationship between a reference RS and a target RS will be described as a framework of the new UL TCI.

[0149] The UE may receive information regarding the newly defined spatial relationship between the reference RS and the target RS (e.g., UL TCI state). For example, the UE receives information regarding the newly defined spatial relationship between the reference RS and the target RS (e.g., UL TCI state) from the NW.

[0150] The UE then determines the UL beam to be used by the UE based on the newly defined information on the spatial relationship (e.g., UL TCI state) between the reference RS and the target RS, and performs UL transmission to the NW.

[0151] The UE may receive information regarding the newly defined spatial relationship (e.g., UL TCI state) between the reference RS and the target RS through higher layer signaling and / or physical layer signaling, or may receive the information through a combination of higher layer signaling and physical layer signaling.

[0152] The newly defined information on the spatial relationship between the reference RS and the target RS may be, for example, specific information of an RRC information element (e.g., spatialRelationInfo-r17). The reference RS may be, for example, at least one of an SSB, a CSI-RS, and an SRS. The target RS may be, for example, an UL RS (e.g., at least one of a DMRS, a PRACH, and an SRS for demodulating at least one of a PUCCH or a PUSCH).

[0153] In the specific information (e.g., spatialRelationInfo-r17) element, an index (ID, e.g., SpatialRelationInfoId) for a certain number (e.g., X (X is an integer equal to or greater than 0)) of specific information may be set. In the index for the certain number (e.g., X) of specific information, a subset of the certain number (e.g., X) of information on spatial relations may be set for each target RS (e.g., at least one of SRS, PUCCH-Config, PUSCH-Config, and PRACH).

[0154] The UE may be configured by RRC signaling with a candidate (list) of information regarding the spatial relationship between the newly defined reference RS and target RS, and the MAC CE may activate / deactivate information regarding the spatial relationship for a certain channel / RS (e.g., SRS, PUCCH, PUSCH).

[0155] In addition, the UE may be configured with a list of candidates for newly defined information regarding the spatial relationship between the reference RS and the target RS through RRC signaling, and information regarding the spatial relationship for a certain channel / RS (e.g., aperiodic SRS, PUSCH, PRACH (e.g., PRACH indicated by a PDCCH carrying a DCI format including a new field), and PUCCH (e.g., PUCCH indicated by a new field in a DL assignment)) may be dynamically indicated through L1 signaling (e.g., downlink control information (DCI)).

[0156] The UE may receive information about the spatial relationship (UL TCI state) applied to a specific channel / RS through physical layer signaling (L1 signaling). Information about resources (e.g., resource IDs) is configured (indicated) for the specific channel / RS, and different spatial relationships may be configured for each of the configured (indicated) resources. In other words, the UE may assume that different spatial relationships (UL TCI states) are configured for each resource configured for the specific channel / RS.

[0157] For example, the information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may be an information element on the spatial relationship between the reference RS and the target RS as shown in Fig. 3A. In the information element of spatialRelationInfo-r17, an index (SpatialRelationInfoId) on a certain number (e.g., X pieces) of specific information may be set.

[0158] Also, as shown in Fig. 3B, in the information about the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17), information about the panel (e.g., ID, index (panelIndex)) may be set. The information about the panel may be at least one of information about a UE antenna group (UE antenna group ID), information about a specific RS group (specific RS group ID), or other similar IDs.

[0159] The newly defined information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may be applied to a certain UL channel / RS. For example, the newly defined information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may be applied to all UL channels / RS. In other words, the UE may be configured with only the newly defined information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) instead of the existing spatial relationship.

[0160] Also, for example, newly defined information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) may be applied to some UL channels / RSs, and existing information on the spatial relationship may be applied to the remaining UL channels / RSs.

[0161] In this case, newly defined information on the spatial relationship between the reference RS and the target RS for different UL channels / RSs (e.g., spatialRelationInfo-r17) and information on the existing spatial relationship may both be configured in the UE. At this time, one piece of spatial relationship information may be applied to one UL channel / RS by higher layer signaling (e.g., RRC configuration / reconfiguration).

[0162] In this case, if a newly defined piece of information on the spatial relationship between the reference RS and the target RS (e.g., spatialRelationInfo-r17) or information on the existing spatial relationship is configured for one UL channel / RS, a different spatial relationship may be applied during RRC reconfiguration.

[0163] How the UE determines parameters related to UL transmit power control, taking into account the UL TCI state and spatial relationship information that are planned to be adopted in future wireless communication systems, has not yet been studied. If the parameters related to UL transmit power control cannot be determined appropriately, there is a risk of communication throughput decreasing.

[0164] Therefore, the present inventors have conceived a method for appropriately determining parameters relating to UL transmission power control.

[0165] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication methods according to the embodiments and aspects may be applied independently or in combination.

[0166] The TCI state may be read as a TCI state or a QCL assumption, a QCL assumption, a spatial domain receive filter, a UE spatial domain receive filter, a spatial domain filter, a UE receive beam, a DL receive beam, a DL-RS, etc. The RS of QCL type D, the DL-RS associated with QCL type D, the DL-RS with QCL type D, the source of the DL-RS, the SSB, and the CSI-RS may be read as each other.

[0167] In the present disclosure, the TCI state may be information about a receive beam (spatial domain receive filter) instructed (configured) for the UE (e.g., DL-RS, QCL type, cell in which DL-RS is transmitted, etc.). The QCL assumption may be information about a receive beam (spatial domain receive filter) assumed by the UE based on transmission or reception of an associated signal (e.g., PRACH, DL-RS, QCL type, cell in which DL-RS is transmitted, etc.).

[0168] In the present disclosure, the UL TCI state may be interchangeably read as a transmission beam of a UE, a UL beam, a spatial relationship of a UL TCI state, a spatial relationship, etc. The UL beam may refer to a transmission beam of a PUCCH / PUSCH. "UL TCI", "ULTCI", and "UL-TCI" may be interchangeably read.

[0169] In the present disclosure, TRP, panel, TRP ID, panel ID, CORESET group ID for a CORESET of a PDCCH from a TRP or panel, CORESET pool index indicating a CORESET pool of a PDCCH from a TRP or panel, CORESET ID indicating a CORESET of a PDCCH from a TRP or panel, and other indices corresponding to a TRP or panel (such as a DMRS port group ID) may be interpreted as interchangeable.

[0170] In the present disclosure, SRS may be interpreted as at least one of aperiodic SRS (A-SRS), periodic SRS (P-SRS), and semi-persistent (SP-SRS).

[0171] In this disclosure, the terms "relationship" and "mapping" may be interchangeable. The term "rXX" (e.g., r17) in this disclosure indicates a 3GPP release number (e.g., 3GPP Rel. 17), but may be replaced with a term corresponding to another release number (e.g., r18, r19, r20, etc.).

[0172] (Wireless communication method) <PUCCH Power Control in Rel.16> Figure 4 is a diagram showing the PUCCH spatial relation information in Rel.16. As shown in Figure 4, 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 for the power control of PUCCH.

[0173] Figure 5 is a diagram showing the PUCCH power control information in Rel.16. As shown in Figure 5, the PUCCH power control information (PUCCH-PowerControl) includes a set of P0 (p0-Set) that indicates P0-PUCCH and path loss reference RSs (pathlossReferenceRSs).

[0174] Also, P0-PUCCH includes the ID of P0-PUCCH (p0-PUCCH-Id) and the value of P0-PUCCH (p0-PUCCH-Value). That is, the PUCCH power control information shows the relevance between the P0-PUCCH ID and the value of P0-PUCCH.

[0175] Also, the PUCCH path loss reference RS (PUCCH-PathlossReferenceRS) includes the PUCCH path loss reference RS-ID (pucch-PathlossReferenceRS-Id) and the downlink reference signal (referenceSignal, SSB or CSI-RS) used for PUCCH path loss estimation. That is, the PUCCH power control information shows the relevance between the PUCCH path loss reference RS-ID and the downlink reference signal.

[0176] <The First Embodiment> In the first embodiment, a description is given of a configuration of PUCCH power control information in a unified UL TCI (unified TCI, UL TCI) framework. The UE receives specific information indicating a relationship (mapping) between an identifier (ID) of spatial relationship information and a parameter related to PUCCH transmission power control (PUCCH path loss reference RS / P0-PUCCH / closed loop index) by higher layer signaling (e.g., RRC). The UE determines a parameter related to PUCCH transmission power based on the mapping between the spatial relationship information and the parameter related to PUCCH transmission power control, and determines the PUCCH transmission power. The UE controls the transmission of the PUCCH based on the determined PUCCH transmission power.

[0177] The "PUCCH path loss reference RS" in the first embodiment is q d "P0-PUCCH" corresponds to P O_PUCCH,b,f,c (q u ) The “closed-loop index” corresponds to l in equations (3) and (4).

[0178] In the present disclosure, "PUCCH path loss reference RS" and "PUCCH path loss reference RS-ID" may be interchangeable. "P0-PUCCH" and "P0-PUCCH-ID" may be interchangeable. "PUCCH-closed loop index" and "closed loop index" may be interchangeable.

[0179] [Aspect 1-1] The UE may receive specific information indicating a mapping between the PUCCH spatial relationship information (an identifier (ID) of the PUCCH spatial relationship information) and a parameter related to the PUCCH transmission power control (PUCCH path loss reference RS / P0-PUCCH / closed loop index) by higher layer signaling (e.g., RRC). The specific information may include the identifier of the PUCCH spatial relationship information and the parameter related to the PUCCH transmission power control. The specific information may be a PUCCH power control information element, or may be a new information element that is different from the PUCCH power control information element and does not include a reference signal used for spatial relationship.

[0180] Fig. 6 is a diagram showing an example of a PUCCH power control information element in aspect 1-1. As shown in Fig. 6, the PUCCH power control information (PUCCH-PowerControl-r17) which is an RRC parameter includes UL-TCI-PUCCH mapping (ULTCI-PUCCH-mapping-r17) corresponding to the ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17).

[0181] The ULTCI-PUCCH power control information (ULTCI-PUCCH-PowerControl-r17) includes a PUCCH spatial relation information ID (spatialRelationInfoId-r17), a PUCCH path loss reference RS-ID (pucch-PathlossReferenceRS-Id), a P0-PUCCH-ID (p0-PUCCH-Id), and a PUCCH-closed loop index (pucch-closedLoopIndex). That is, the PUCCH power control information element indicates mapping between the PUCCH spatial relation information and the PUCCH path loss reference RS / P0-PUCCH / closed loop index.

[0182] Fig. 7 is a diagram showing an example of a ULTCI-PUCCH mapping setting information element in aspect 1-1. The ULTCI-PUCCH mapping setting information element is an example of a new information element that does not include a reference signal used for spatial relationship, unlike the PUCCH power control information element. As shown in Fig. 7, 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 the example shown in Fig. 6.

[0183] The PUCCH spatial relationship information ID (spatialRelationInfoid-r17) may indicate a unified (UL) spatial relationship configuration used to configure the spatial relationship between a reference RS (e.g., SSB / CSI-RS / SRS) and a target UL channel / RS (e.g., PUCCH / PUSCH / SRS / UL DMRS). The PUCCH spatial relationship information ID (spatialRelationInfoId-r17) may be considered as a UL-TCI state configuration.

[0184] [Aspect 1-2] The UE may receive specific information (spatial relationship information) indicating mapping between an identifier (ID) of spatial relationship information and a parameter related to PUCCH transmission power control (PUCCH path loss reference RS / P0-PUCCH / closed loop index) by higher layer signaling (e.g., RRC). The spatial relationship information may include an identifier of the spatial relationship information and a PUCCH path loss reference RS-ID / P0-PUCCH-ID / PUCCH-closed loop index. The specific information (spatial relationship information) in aspect 1-2 includes, for example, information indicating a downlink reference signal (referenceSignal) used for spatial relationship and a downlink reference signal used for path loss estimation (pucch-PathlossReferenceRS-Config-r17) (FIG. 9).

[0185] Fig. 8 is a diagram showing a first example of spatial relation information in aspect 1-2. As shown in Fig. 8, the spatial relation information (SpatialRelationInfo-r17) includes a spatial relation information ID (spatialRelationInfoId-r17), a PUCCH path loss reference RS-ID (pucch-PathlossReferenceRS-Id), a P0-PUCCH-ID (p0-PUCCH-Id), and a PUCCH-closed loop index (pucch-closedLoopIndex). That is, the spatial relation information indicates a mapping between the spatial relation information ID and a parameter related to PUCCH transmission power control. Note that, similarly to the example shown in Fig. 5, the PUCCH power control information may indicate a mapping between the ID of P0-PUCCH and the value of P0-PUCCH, and a mapping between the PUCCH path loss reference RS-ID and a reference signal.

[0186] Fig. 9 is a diagram showing a second example of spatial relation information in aspect 1-2. As shown in Fig. 9, the spatial relation information (SpatialRelationInfo-r17) includes a spatial relation information ID (SpatialRelationInfoId-r17), configuration information of the PUCCH path loss reference RS (pucch-PathlossReferenceRS-Config-r17), a value of P0-PUCCH (p0-PUCCH-value), and a PUCCH-closed loop index (pucch-closedLoopIndex). That is, the spatial relation information indicates a mapping between the spatial relation information ID and a parameter related to PUCCH transmission power control.

[0187] In addition, the spatial relationship information may be used for PUSCH / PUCCH / SRS, and the configured power control parameters (PUCCH path loss reference RS, P0-PUCCH, closed loop index) may be applied only to the PUCCH.

[0188] [UE behavior] In the PUCCH power control of the first embodiment, when spatial relation information is provided (configured), the UE may obtain the mapping between the spatial relation information (spatial relation information ID) and the path loss reference RS / P0-PUCCH / closed loop index. When the spatial relation information ID is configured / indicated for the PUCCH resource, the UE may determine the PUCCH path loss reference RS / P0-PUCCH / closed loop index based on the identified mapping. When the spatial relation information is not transmitted, the UE may apply the Rel.16 PUCCH power control.

[0189] According to the first embodiment, since the UE can appropriately determine the parameters related to the PUCCH transmission power, it can appropriately control the PUCCH transmission power and prevent the reduction of the communication throughput.

[0190] <Rel.16 PUSCH Power Control> FIG. 10 is a diagram showing an example of parameters related to the power control of Rel.16 PUSCH. As shown in FIG. 10, the PUSCH power control information (PUSCH-PowerControl) and the SRI-PUSCH power control information (SRI-PUSCH-PowerControl) are configured as RRC parameters. The SRI-PUSCH power information (SRI-PUSCH-PowerControl) includes the SRI-PUSCH power control ID (sri-PUSCH-PowerControlId), the SRI-PUSCH path loss reference RS-ID (sri-PUSCH-PathlossReferenceRS-Id), the SRI-P0-PUSCH-α set ID (sri-P0-PUSCH-AlphaSetId), and the SRI-PUSCH-closed loop index (sri-PUSCH-ClosedLoopIndex). That is, in the SRI-PUSCH power information, the relevance between the PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed loop index is shown.

[0191] In PUSCH power control, the UE determines P0-PUSCH / α / path loss reference RS / closed loop index based on SRI indicated in DCI for scheduling UL, and mapping of P0-PUSCH / α / path loss reference RS / closed loop index with RRC parameters. In the new unified framework, a new DCI field may be used to indicate the spatial relationship of PUSCH instead of SRI. However, the question arises as to how the parameters of PUSCH power control are determined in that case.

[0192] <Second embodiment> The UE receives DCI including specific information different from the SRI, and receives mapping between the specific information and parameters related to uplink shared channel (PUSCH) transmission power control by higher layer signaling. The UE determines parameters to be used for PUSCH transmission power control based on the specific information included in the DCI and the mapping. The specific information is, for example, new configuration information (ULTCI) or an identifier of spatial relationship information. The UE controls PUCCH transmission power using the parameters to be used for PUSCH transmission power control.

[0193] The parameter related to the PUSCH transmission power control is PUSCH path loss reference RS / P0-PUSCH / α(Alpha) / closed loop index. The PUSCH path loss reference RS is expressed by q d P0-PUSCH corresponds to P O_PUSCH,b,f,c (j). α corresponds to α in Eq. (1). b,f,c (j). The closed-loop index corresponds to l in equation (1).

[0194] In the present disclosure, the terms "PUSCH pathloss reference RS-ID" and "PUSCH pathloss reference RS" may be interchangeable. The terms "P0-PUSCH-α set ID" and "P0-PUSCH / α" may be interchangeable. The terms "PUSCH-closed-loop index" and "closed-loop index" may be interchangeable.

[0195] [Aspect 2-1] The UE receives DCI including ULTCI as specific information different from SRI, and determines parameters to be used for PUSCH transmission power control based on mapping by ULTCI and higher layer signaling. The mapping is assumed to be mapping between SRI-PUSCH power control ID transmitted by higher layer signaling (e.g., RRC) and parameters related to PUSCH transmission power control. It is assumed that ULTCI in DCI corresponds to SRI-PUSCH power control ID in higher layer signaling (RRC).

[0196] 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 may be configured as an RRC parameter, similar to the PUSCH power control of Rel. 16 described above. This configuration may indicate the mapping between a new indication in DCI (e.g., ULTCI) and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / PUSCH-closed loop index. That is, the new indication in DCI (e.g., ULTCI) may correspond to the SRI-PUSCH power control ID.

[0197] The UE may then determine the parameters (PUSCH pathloss reference RS / P0-PUSCH / α / closed-loop index) used for PUSCH transmission power control based on the new indication (e.g., ULTCI) in the DCI and the configured mapping. For example, when ULTCI=0, the UE may apply the PUSCH pathloss reference RS / P0-PUSCH / α / closed-loop index mapped to the SRI-PUSCH power control ID=0.

[0198] When the UE receives the spatial relationship information and the SRI-PUSCH power control information, the UE obtains a mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the code point of the ULTCI in the DCI. When the ULTCI is indicated in the DCI that schedules the PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the ULTCI as a parameter to be used for the PUSCH transmission power control. When the spatial relationship information is not transmitted, the UE may apply the PUSCH power control of Rel. 16 described above.

[0199] [Aspect 2-2] The UE receives DCI including ULTCI as specific information different from SRI, and determines parameters to be used for PUSCH transmission power control based on the ULTCI and mapping. The mapping is assumed to be a mapping between a ULTCI-PUSCH power control ID and parameters related to PUSCH transmission power control transmitted by higher layer signaling (RRC). It is assumed that the ULTCI in DCI corresponds to the ULTCI-PUSCH power control ID in RRC.

[0200] In aspect 2-2, it is assumed that a new configuration by RRC indicating mapping between ULTCI in DCI and PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / closed-loop index is applied.

[0201] FIG. 11 is a diagram showing an example of parameters related to power control of PUSCH in aspect 2-2. ULTCI-PUSCH power information (ULTCI-PUSCH-PowerControl-r17), which is an RRC parameter, includes ULTCI-PUSCH power control ID (ULTCI-PUSCH-PowerControlId-r17), ULTCI-PUSCH path loss reference RS-ID (ULTCI-PUSCH-PathlossReferenceRS-Id), ULTCI-P0-PUSCH-α set ID (ULTCI-P0-PUSCH-AlphaSetId), and ULTCI-PUSCH-closed loop index (ULTCI-PUSCH-ClosedLoopIndex). That is, in the ULTCI-PUSCH power information, a mapping between the PUSCH power control ID and the PUSCH path loss reference RS-ID / P0-PUSCH-α set ID / closed loop index is shown. ULTCI in DCI corresponds to the PUSCH power control ID.

[0202] The UE may 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, if ULTCI=0, the UE may apply the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to ULTCI-PUSCH power control ID=0.

[0203] When the UE receives the spatial relationship information and the ULTCI-PUSCH power information, the UE obtains a mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the code point of the ULTCI in the DCI. When the ULTCI is indicated in the DCI that schedules the PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the ULTCI as a parameter to be used for PUSCH transmission power control. When the spatial relationship information is not transmitted, the UE may apply the PUSCH power control of Rel. 16 described above.

[0204] [Aspect 2-3] The UE receives DCI including an identifier of spatial relationship information (spatial relationship information ID) as specific information, and determines parameters to be used for PUSCH transmission power control based on the spatial relationship information ID and mapping transmitted by higher layer signaling. The mapping is a mapping between the spatial relationship information ID and parameters related to PUSCH transmission power control transmitted by higher layer signaling (RRC). It is assumed that the spatial relationship information ID in the DCI corresponds to the spatial relationship information ID in the higher layer signaling (RRC).

[0205] The mapping between the spatial relationship information ID transmitted by higher layer signaling and the parameters related to PUSCH transmission power control may be included in a PUSCH power control information element (PUSCH-Power Control information element), or may be included in a new information element different from the PUSCH power control information element. Each example will be described below.

[0206] Fig. 12 is a diagram showing an example of a PUSCH power control information element in aspect 2-3. As shown in Fig. 12, the PUSCH power control information (PUSCH-PowerControl-r17) which is an RRC parameter includes ULTCI-PUSCH mapping (ULTCI-PUSCH-mapping-r17) corresponding to the ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17).

[0207] The ULTCI-PUSCH power control information (ULTCI-PUSCH-PowerControl-r17) includes a spatial relationship information ID (spatialRelationInfoId-r17), a PUSCH pathloss reference RS-ID (PUSCH-PathlossReferenceRS-Id), a P0-PUSCH-α set ID (P0-PUSCH-AlphaSetId), and a PUSCH-closed loop index (PUSCH-ClosedLoopIndex). That is, the PUSCH power control information element indicates mapping between the spatial relationship information ID and parameters (PUSCH pathloss reference RS / P0-PUSCH / α / closed loop index) used for PUSCH transmission power control.

[0208] FIG. 13 is a diagram showing an example of a ULTCI-PUSCH mapping setting information element in aspect 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 shown in FIG. 13, 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 example shown in FIG. 12.

[0209] When the UE receives the spatial relationship information and the ULTCI-PUSCH power information, the UE obtains a mapping between the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index and the spatial relationship information ID. When the spatial relationship information ID is indicated in the DCI for scheduling the PUSCH, the UE determines the PUSCH path loss reference RS / P0-PUSCH / α / closed-loop index mapped to the spatial relationship information ID as a parameter to be used for PUSCH transmission power control. When the spatial relationship information is not transmitted, the UE may apply the PUSCH power control method of Rel. 16.

[0210] In aspect 2-3, the UE may support PUSCH transmission for single DCI (S-DCI, one DCI that indicates multiple TCI states) based multi-TRP (e.g., PUSCH transmission for Rel. 16 multi-TRP). In order for the UE to support PUSCH transmission for multi-TRP, the code point of ULTCI in the DCI may be mapped to multiple spatial relation information (spatial relation information ID). In aspect 2-3, the ULTCI code point in the DCI is easily mapped to multiple power control parameters.

[0211] According to the second embodiment, since the UE can appropriately determine the parameter related to the PUSCH transmission power, it can appropriately control the PUSCH transmission power and prevent the decrease of the communication throughput.

[0212] <Rel.16 SRS Power Control> FIG. 14 is a diagram showing an example of parameters related to the power control of Rel. 16 SRS. As shown in FIG. 14, the RRC parameter SRS resource set (SRS-ResourceSet) includes, as parameters related to the power control of SRS, α (alpha), P0, pathloss reference RS, and SRS power control adjustment states. The Rel. 16 SRS power control is also applied to the new unified UL TCI framework.

[0213] The pathloss reference RS of the UL channel / RS is related to the QCL / TCI state / spatial relation of the UL channel / RS. In the unified UL TCI framework, the pathloss reference RS is set as part of the unified spatial relation. The pathloss reference RS is applied to PUCCH / PUSCH / SRS power control.

[0214] <The Third Embodiment> The UE receives information indicating a mapping between an identifier of spatial relationship information (spatial relationship information ID) and a path loss reference signal (path loss reference RS) through higher layer signaling, and determines a path loss reference RS to be used for transmission power control based on the indicated spatial relationship information ID and the mapping. The UE controls the transmission power of PUSCH / PUCCH / SRS using the determined path loss reference RS.

[0215] In the present disclosure, the terms "spatial relationship", "spatial relationship information", and "spatial relationship information ID" may be interchangeable. The terms "pathloss reference RS", "pathloss reference RSID", "pathloss reference signal (pathloss RS)", "pathloss reference signal ID (pathloss RSID)", and "PL-RS" may be interchangeable.

[0216] The path loss reference RS in the third embodiment is expressed as q d That is, the path loss reference RS is a parameter used for PUCCH / PUSCH / SRS transmission power control.

[0217] [Aspect 3-1] In aspect 3-1, information indicating 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 parameters. That is, the UE receives the spatial relationship information including the information indicating the mapping.

[0218] 15A and 15B are diagrams showing configuration of a pathloss reference RS in aspect 3-1. Fig. 15A is a diagram showing pathloss reference RS configuration information in aspect 3-1. The pathloss reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17), which is a new information element (RRC parameter), includes a pathloss reference RSID (PathlossReferenceRS-Id-r17) corresponding to the pathloss reference RS (PathlossReferenceRS-r17).

[0219] Fig. 15B is a diagram showing spatial relationship information in aspect 3-1. As shown in Fig. 15B, the spatial relationship information, which is an RRC parameter, includes a spatial relationship information ID (spatialRelationInfoId-r17) and a pathloss reference RSID (PathlossReferenceRS-Id-r17). That is, the mapping between the spatial relationship information (spatial relationship information ID) and the pathloss reference RS (pathloss reference RSID) is shown.

[0220] [Aspect 3-2] In aspect 3-2, information indicating 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 parameters. That is, the UE receives the spatial relationship information including the information indicating the mapping.

[0221] Fig. 16 is a diagram showing spatial relationship information in aspect 3-2. As shown in Fig. 16, spatial relationship information (SpatialRelationInfo-r17), which is an RRC parameter, includes a spatial relationship information ID (spatialRelationInfoId-r17) and pathloss reference RS configuration information (PathlossReferenceRS-Config-r17). That is, the pathloss reference RS is directly configured in the spatial relationship information, thereby indicating mapping between the spatial relationship information ID and the pathloss reference RS.

[0222] [Aspect 3-3] In aspect 3-3, information indicating mapping between the spatial relationship information ID and the pathloss reference signal (pathloss reference RS) is included in ULTCI pathloss reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17), which is a new RRC parameter. The pathloss reference RS may be read as the pathloss RS. Specifically, the mapping is included in the ULTCI pathloss RS (ULTCI-PLRS-r17) indicated by the ULTCI pathloss reference RS configuration information.

[0223] Fig. 17 is a diagram showing ULTCI pathloss reference RS configuration information in aspect 3-3. As shown in Fig. 17, the ULTCI pathloss reference RS configuration information, which is a new RRC parameter, includes a ULTCI pathloss RS (ULTCI-PLRS-r17) corresponding to a ULTCI pathloss RS mapping (ULTCI-PLRS-mapping-r17). In addition, the ULTCI pathloss RS (ULTCI-PLRS-r17) includes a spatial relationship information ID (spatialRelationInfoId-r17) and a pathloss reference RSID (PathlossReferenceRS-Id-r17). That is, the ULTCI pathloss reference RS configuration information indicates mapping between the spatial relationship information ID and the pathloss reference RS.

[0224] [Aspect 3-4] In aspect 3-4, information indicating mapping between the spatial relationship information ID and the path loss reference signal (path loss reference RS) is included in ULTCI path loss RS mapping configuration information (ULTCI-PLRS-mapping-config-r17), which is a new RRC parameter. The path loss reference RS may be read as the path loss RS.

[0225] Fig. 18A is a diagram showing ULTCI pathloss reference RS configuration information in aspect 3-4. The ULTCI pathloss reference RS configuration information (ULTCI-PathlossReferenceRS-config-r17) shown in Fig. 18A is a new RRC parameter, and includes a pathloss reference RS (PathlossReferenceRS-r17).

[0226] Fig. 18B is a diagram showing ULTCI path loss RS mapping configuration information in aspect 3-4. The ULTCI path loss RS mapping configuration information (ULTCI-PLRS-mapping-config-r17) shown in Fig. 18B, which is a new RRC parameter, includes a ULTCI path loss RS (ULTCI-PLRS-r17) corresponding to the ULTCI path loss RS mapping (ULTCI-PLRS-mapping-r17). In addition, the ULTCI path loss RS (ULTCI-PLRS-r17) includes a spatial relationship information ID (spatialRelationInfoId-r17) and a path loss reference RSID (PathlossReferenceRS-Id-r17). That is, the ULTCI path loss RS mapping configuration information indicates mapping between the spatial relationship information ID and the path loss reference RS.

[0227] [UE Actions] In the power control of PUCCH / SRS / PUSCH, when the UE receives spatial relation information (spatialRelationInfo-r17), the UE obtains a mapping between spatial relation information ID and path loss reference RS (path loss reference RSID). 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 the spatial relation information ID and the obtained mapping. The spatial relation information ID is configured (indicated) by at least one of MAC CE and DCI, for example, from a list configured by RRC.

[0228] At least a part of the first embodiment and the third embodiment relates to determining a path loss reference RS for PUCCH power control, and at least a part of the second embodiment and the third embodiment relates to determining a path loss reference RS for PUSCH power control.

[0229] According to the third embodiment, the UE can appropriately determine the path loss reference RS used for PUCCH / PUSCH / SRS transmission power control, and therefore can appropriately control the PUCCH / PUSCH / SRS transmission power and prevent a decrease in communication throughput.

[0230] <Other> In the present disclosure, "SpatialRelationInfo-r17" may be read as "UL TCI-state r17" or "UL beam management r17". The processing in the present disclosure may be applied only if the UE reports capability information supporting the TCI state (UL beam management in Rel.17). There may be one report for all channels, or reports may be made per channel (e.g. PUCCH / PUSCH / SRS).

[0231] Cross-channel configuration of UL TCI may be permitted. For example, a UL TCI ID corresponding to a UL TCI configuration configured for a certain channel (SRS / PUCCH / PUSCH) may be configured for the UL TCI of another channel (SRS / PUCCH / PUSCH). A channel may be read as a signal.

[0232] Cross-BWP / CC configuration of UL TCI may be permitted. For example, a UL TCI ID corresponding to a UL TCI configuration configured for a BWP / CC (e.g., BWP#1 / CC#1) may be configured for another BWP / CC (e.g., BWP#2 / CC#2).

[0233] There are two interpretations of UL TCI in this disclosure: "replacing" or "adding" to the current spatial relationship. If the UL TCI replaces the current spatial relationship, then the UL TCI must include power control.

[0234] If the UL TCI is added to the current spatial relationship, there is no need to include a power control indication in the UL TCI. If the UL TCI is configured with a power control indication, the UE shall assume this indication for fast transmission power control (TPC). Otherwise, the UE may assume Rel. 15 / 16 for TPC (the current spatial relationship mechanism for controlling TPC).

[0235] (Wireless communication system) A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination of these methods.

[0236] 19 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), or the like, which are specified by the Third Generation Partnership Project (3GPP).

[0237] Furthermore, the wireless communication system 1 may support dual connectivity between a plurality of Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0238] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN) and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN and the LTE (E-UTRA) base station (eNB) is the SN.

[0239] The wireless communication system 1 may support dual connectivity between multiple base stations in the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0240] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are arranged in the macrocell C1 and form a small cell C2 that is narrower than the macrocell C1. A user terminal 20 may be located in at least one of the cells. The arrangement and number of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as a base station 10.

[0241] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0242] 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 above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.

[0243] Furthermore, the user terminal 20 may perform communication in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0244] The multiple base stations 10 may be connected by wire (e.g., optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0245] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include at least one of, for example, an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0246] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0247] In the wireless communication system 1, a wireless access scheme based on Orthogonal Frequency Division Multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc. may be used.

[0248] The radio access scheme may be called a waveform. In the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0249] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0250] In addition, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0251] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0252] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information of at least one of the PDSCH and the PUSCH.

[0253] In addition, DCI for scheduling PDSCH may be called DL assignment, DL DCI, etc., and DCI for scheduling PUSCH may be called UL grant, UL DCI, etc. In addition, PDSCH may be replaced with DL data, and PUSCH may be replaced with UL data.

[0254] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or multiple search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0255] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," and "CORESET setting" in the present disclosure may be read as interchangeable terms.

[0256] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and a scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0257] In the present disclosure, a downlink, an uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning of the channels.

[0258] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0259] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and the DMRS for the PBCH) may be called an SS / PBCH block, an SS Block (SSB), or the like. In addition, the SS, SSB, and the like may also be called a reference signal.

[0260] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may be called a user equipment specific reference signal (UE-specific reference signal).

[0261] (base station) 20 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140 may be provided.

[0262] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and the base station 10 may be assumed to have other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0263] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured with a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0264] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transmission and reception unit 120. The control unit 110 may perform call processing (setting, release, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0265] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0266] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0267] The transmitting / receiving antenna 130 can be composed of an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0268] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0269] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0270] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0271] The transceiver 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0272] The transceiver unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, and the like on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna .

[0273] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency signal received by the transceiver antenna .

[0274] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0275] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc., based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0276] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data) for the user terminal 20, control plane data, etc.

[0277] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0278] The transceiver 120 may transmit specific information indicating the mapping between the identifier of the spatial relationship information and the parameters related to the PUCCH transmission power control by higher layer signaling.

[0279] The control unit 110 may control reception of the PUCCH to which the parameters related to the PUCCH transmission power determined based on the mapping are applied.

[0280] The transceiver 120 may transmit downlink control information (DCI) including specific information different from a measurement reference signal resource identifier (SRI), and may transmit mapping between the specific information and a parameter related to a physical uplink shared channel (PUSCH) transmission power control by higher layer signaling.

[0281] The control unit 110 may control reception of a PUSCH to which parameters used for PUSCH transmission power control determined based on the specific information and the mapping are applied.

[0282] The transceiver 120 may transmit information indicating mapping between the identifier of the spatial relationship information and the path loss reference signal by higher layer signaling.

[0283] The control unit 110 may control reception of a signal in which the path loss reference signal determined based on the indicated identifier of spatial relationship information and the mapping is applied to transmission power control.

[0284] (User terminal) 21 is a diagram showing an example of the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230.

[0285] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and the user terminal 20 may be assumed to have other functional blocks necessary for wireless communication. Some of the processes of each unit described below may be omitted.

[0286] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured with a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0287] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission / reception, measurement, etc. using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transmission / reception unit 220.

[0288] The transmitting / receiving unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting / receiving unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting / receiving circuit, and the like, which are described based on common understanding in the technical field related to the present disclosure.

[0289] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0290] The transmitting / receiving antenna 230 can be composed of an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.

[0291] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0292] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0293] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0294] The transceiver 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit sequence to be transmitted, and output a baseband signal.

[0295] Whether or not to apply the DFT process may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver 220 (transmission processor 2211) may perform the DFT process as the transmission process to transmit the channel using a DFT-s-OFDM waveform, and may not perform the DFT process as the transmission process if transform precoding is enabled for the channel.

[0296] The transceiver unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, and the like on the baseband signal, and transmit the radio frequency band signal via the transceiver antenna 230.

[0297] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency signal received by the transceiver antenna 230.

[0298] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0299] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0300] In addition, the transmitting section and the receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0301] The transceiver 220 may receive specific information indicating a mapping between an identifier of spatial relationship information and a parameter related to uplink control channel (PUCCH) transmission power control by higher layer signaling. The specific information may be a PUCCH power control information element. The specific information may be information that does not include a reference signal used for spatial relationship, unlike the PUCCH power control information element. The specific information may include information indicating a downlink reference signal used for spatial relationship and a downlink reference signal used for path loss estimation.

[0302] The control unit 210 may determine a parameter related to the PUCCH transmission power based on the mapping.

[0303] The transceiver 220 may receive downlink control information (DCI) including specific information different from a measurement reference signal resource identifier (SRI), and may receive mapping between the specific information and a parameter related to uplink shared channel (PUSCH) transmission power control by higher layer signaling. The specific information may be an uplink transmission configuration indication (ULTCI). The specific information may be an identifier of spatial related information.

[0304] The control unit 210 may determine parameters to be used for PUSCH transmission power control based on the specific information and the mapping.

[0305] The transceiver 220 may receive information indicating a mapping between an identifier of spatial relationship information and a path loss reference signal by higher layer signaling. The transceiver 220 may receive the spatial relationship information including information indicating the mapping. The transceiver 220 may receive uplink transmission configuration indication (ULTCI) path loss reference signal configuration information including information indicating the mapping.

[0306] The control unit 210 may determine the path loss reference signal to be used for transmission power control, based on the indicated identifier of the spatial relationship information and the mapping.

[0307] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. The method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically combined, or may be realized by using two or more devices that are physically or logically separated and directly or indirectly connected (for example, by wire, wirelessly, etc.). The functional blocks may be realized by combining the one device or the multiple devices with software.

[0308] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs the function of transmission may be called a transmitting unit, a transmitter, and the like. In either case, as described above, the method of realization is not particularly limited.

[0309] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 22 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. The above-mentioned base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0310] In this disclosure, the terms "apparatus," "circuit," "device," "section," "unit," and the like can be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0311] For example, although only one processor 1001 is shown, there may be multiple processors. Also, the processes may be performed by one processor, or the processes may be performed by two or more processors simultaneously, sequentially, or in other manners. Also, the processor 1001 may be implemented by one or more chips.

[0312] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading a specific software (program) onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations, controls communications via a communication device 1004, and controls at least one of reading and writing of data in the memory 1002 and the storage 1003.

[0313] The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0314] Moreover, the processor 1001 reads out programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to the programs. As the programs, programs that cause a computer to execute at least a part of the operations described in the above-mentioned embodiments are used. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and the other functional blocks may be realized in a similar manner.

[0315] The memory 1002 is a computer-readable recording medium, and may be configured by at least one of, for example, a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), and other suitable storage media. The memory 1002 may be called a register, a cache, a main memory (primary storage device), and the like. The memory 1002 can store a program (program code), a software module, and the like that is executable to implement a wireless communication method according to an embodiment of the present disclosure.

[0316] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0317] The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0318] The input device 1005 is an input device (e.g., 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 (e.g., a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0319] 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 may be configured using a single bus, or may be configured using different buses between each device.

[0320] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc., and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0321] (Modification) In addition, the terms explained in this disclosure and the terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be read as mutually interchangeable. A signal may also be a message. A reference signal may also be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applied standard. A component carrier (CC) may also be called a cell, a frequency carrier, a carrier frequency, etc.

[0322] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0323] Here, the numerology may be a communication parameter applied to at least one of the transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), a number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0324] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. A slot may also be a time unit based on numerology.

[0325] A slot may include multiple minislots. Each minislot may be composed of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may be composed of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0326] A radio frame, a subframe, a slot, a minislot, and a symbol each represent a time unit for transmitting a signal. A different name may be used for the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be read as interchangeable with each other.

[0327] For example, one subframe may be called a TTI, multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0328] Here, 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 frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0329] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) in which a transport block, a code block, a code word, etc. are actually mapped may be shorter than the TTI.

[0330] In addition, when one slot or one minislot is called TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. Also, the number of slots (minislots) constituting the minimum time unit of scheduling may be controlled.

[0331] A TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, etc.

[0332] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0333] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0334] In addition, an RB may include one or more symbols in the time domain, and may have a length of one slot, one minislot, one subframe, or one TTI. Each of one TTI, one subframe, etc. may be composed of one or more resource blocks.

[0335] In addition, one or more RBs may be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0336] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0337] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a numerology on a carrier, where the common RBs may be identified by the index of the RBs relative to a common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0338] The BWP may include a UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0339] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell", "carrier", etc. in this disclosure may be replaced with "BWP".

[0340] The above-mentioned structures of radio frames, subframes, slots, minislots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

[0341] In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, may be represented using relative values ​​from a predetermined value, or may be represented using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0342] The names used for parameters and the like in this disclosure are not limiting in any way. Furthermore, the formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.

[0343] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0344] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via a plurality of network nodes.

[0345] Input and output information, signals, etc. may be stored in a specific location (e.g., memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0346] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0347] The physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. The RRC signaling may be called an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc. The MAC signaling may be notified, for example, by using a MAC Control Element (CE).

[0348] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0349] The determination may be made based on a value represented by a single bit (0 or 1), a Boolean value represented as true or false, or by comparing numerical values ​​(e.g., with a predetermined value).

[0350] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0351] Additionally, software, instructions, information, etc. may be transmitted or received over a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave, etc.), then these wired and / or wireless technologies are included within the definition of transmission media.

[0352] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0353] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," and the like may be used interchangeably.

[0354] In this disclosure, terms such as "Base Station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. A base station may also be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, etc.

[0355] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small base station for indoor use (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services in this coverage.

[0356] In this disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", etc. may be used interchangeably.

[0357] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0358] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may include a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0359] Furthermore, the base station in the present disclosure may be read as a user terminal. For example, each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be read as a side channel.

[0360] Similarly, the user terminal in the present disclosure may be interpreted as a base station. In this case, the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0361] In the present disclosure, an operation performed by a base station may be performed by its upper node in some cases. It is clear that in a network including one or more network nodes having base stations, various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0362] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched according to implementation. In addition, the processing procedures, sequences, flow charts, etc. of each aspect / embodiment described in this disclosure may be reordered unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0363] Each aspect / embodiment described in the present disclosure may be implemented using any of a wide variety of standards, including Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal point)), 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 The present invention may be applied to systems using 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), other appropriate wireless communication methods, next-generation systems that are based on these, etc. Also, the present invention may be applied to a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0364] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0365] Any reference to an element using a designation such as "first," "second," etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

[0366] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, and the like.

[0367] A "determining" may also be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), etc.

[0368] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. That is, "determination" may be considered to be "deciding" to perform some action.

[0369] Additionally, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," etc.

[0370] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, may mean the nominal UE maximum transmit power, or may mean the rated UE maximum transmit power.

[0371] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0372] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, and the like, as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, and the like, as some non-limiting and non-exhaustive examples.

[0373] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0374] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Further, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0375] In this disclosure, where articles have been added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0376] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modified and altered forms without departing from the spirit and scope of the invention defined based on the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the invention according to the present disclosure.

Claims

1. A transmitter that reports capability information supporting an uplink (UL) transmission configuration indication (TCI) state; A receiver that receives downlink control information (DCI) indicating an identifier of a UL TCI state, and receives a mapping between the identifier of the UL TCI state and a parameter related to an UL shared channel (PUSCH) transmission power control by higher layer signaling; A control unit that determines a parameter to be used for the PUSCH transmission power control based on an identifier of the UL TCI state and the mapping when the capability information is reported, and determines a parameter to be used for the PUSCH transmission power control based on a power control setting of the PUSCH by a measurement reference signal resource indicator (SRI) when the capability information is not reported, The terminal, wherein the configuration includes an identifier of a PUSCH path loss reference signal (RS) and a closed-loop index.

2. A step of reporting capability information supporting an uplink (UL) transmission configuration indication (TCI) state; receiving downlink control information (DCI) indicating an identifier of a UL TCI state, and receiving a mapping between the identifier of the UL TCI state and a parameter related to an UL shared channel (PUSCH) transmission power control by higher layer signaling; When the capability information is reported, a parameter to be used for the PUSCH transmission power control is determined based on an identifier of the TCI state of the UL and the mapping, and when the capability information is not reported, a parameter to be used for the PUSCH transmission power control is determined based on a power control setting of the PUSCH by a measurement reference signal resource indicator (SRI), The wireless communication method for a terminal, wherein the setting includes an identifier of a PUSCH path loss reference signal (RS) and a closed loop index.

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

4. A system having a terminal and a base station, The terminal includes a transmitter that reports capability information supporting a transmission configuration indication (TCI) state of an uplink (UL); A receiver that receives downlink control information (DCI) indicating an identifier of a UL TCI state, and receives a mapping between the identifier of the UL TCI state and a parameter related to an UL shared channel (PUSCH) transmission power control by higher layer signaling; A control unit that determines a parameter to be used for the PUSCH transmission power control based on an identifier of the UL TCI state and the mapping when the capability information is reported, and determines a parameter to be used for the PUSCH transmission power control based on a power control setting of the PUSCH by a measurement reference signal resource indicator (SRI) when the capability information is not reported, The base station includes a receiving unit for receiving the capability information; A transmitter for transmitting the higher layer signaling; A control unit that controls reception of a PUSCH to which a parameter used for the PUSCH transmission power control determined based on an identifier of the UL TCI state and the mapping is applied when the capability information is received, and controls reception of the PUSCH to which a parameter used for the PUSCH transmission power control determined based on the setting is applied when the capability information is not received, The system, wherein the configuration includes a PUSCH path loss reference reference signal (RS) identifier and a closed loop index.

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