Terminal, wireless communication method, base station and system

Abstract

A terminal according to one embodiment of the present disclosure includes: a control unit that determines an uplink transmission configuration indication state (UL TCI state) based on a specific field included in downlink control information (Downlink Control Information (DCI)); and a transmission unit that applies precoding determined based on the UL TCI state and transmits an uplink shared channel based on a codebook. According to one embodiment of the present disclosure, PUSCH transmission can be appropriately controlled.

Description

Technical Field

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

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

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

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In NR, as a beam (precoding) indication method for uplink (UL), the use of UL transmission configuration indication state (TCI state) is being studied.

[0009] However, no research has been conducted on how to control the UL beam used by the UE when the UE is placed in the UL TCI state. If this control is not clear, there is a concern that the increase in communication throughput may be suppressed.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station capable of appropriately controlling PUSCH transmission.

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present invention comprises: a control unit, which determines an uplink transmission configuration indication state (Uplink Transmission Configuration Indication state (UL TCI state)) based on a specific field contained in downlink control information (Downlink Control Information (DCI)); and a sending unit, which applies precoding determined based on the UL TCI state to send an uplink shared channel based on a codebook.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, PUSCH transmission can be appropriately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram showing an example of the correspondence between the antenna port number field and the number of antenna ports in the first embodiment.

[0016] Figure 2 This is a diagram showing an example of setting a transmission scheme for activating the control according to the first embodiment.

[0017] Figure 3 Table 7.3.1.1.2-29 described in TS 38.212 V16.2.0 is shown.

[0018] Figure 4A as well as Figure 4B It is a diagram showing an example of a table related to spatial relationship information indication according to the second embodiment.

[0019] Figure 5A as well as Figure 5BIt is a diagram showing an example of a table related to spatial relationship information indication according to the second embodiment.

[0020] Figure 6 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0021] Figure 7 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0022] Figure 8 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0023] Fig. 9 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0024] (TCI, spatial relationship, QCL)

[0025] In NR, research is being conducted on: UE's reception processing (for example, at least one of reception, demapping, demodulation, and decoding), transmission processing (for example, at least one of transmission, mapping, precoding, modulation, and coding), etc. of control signals and at least one of channels (which can also be expressed as signal / channel. In the present disclosure, "A / B" can also be replaced by "at least one of A and B") based on the transmission configuration indication state (Transmission Configuration Indication state (TCI state)).

[0026] The TCI state may also represent the state of a signal / channel applied to a downlink. A state equivalent to the TCI state of a signal / channel applied to an uplink may also be expressed as a spatial relation.

[0027] The TCI state refers to information related to Quasi-Co-Location (QCL) of signals / channels, and may also be referred to as spatial reception parameters, Spatial Relation Information (SRI), etc. The TCI state may also be set for each channel or each signal to the UE.

[0028] QCL is an indicator that indicates the statistical properties of a signal / channel. For example, the fact that a certain signal / channel is in a QCL relationship with other signals / channels may also mean that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is assumed to be the same among these different signals / channels (at least one of these is QCL).

[0029] In addition, the spatial reception parameter may also correspond to a reception beam of the UE (eg, a reception analog beam), and the beam may also be determined based on the spatial QCL. The QCL (or at least one element of the QCL) in the present disclosure may also be replaced by sQCL (spatial QCL).

[0030] QCL may also be specified in multiple types (QCL types). For example, four QCL types AD may be set that can be conceived to have the same parameters (or parameter sets) but different parameters. The parameters (also referred to as QCL parameters) are shown below:

[0031] QCL Type A: Doppler shift, Doppler spread, average delay, and delay spread,

[0032] QCL Type B: Doppler shift and Doppler spread,

[0033] QCL Type C: Doppler shift and average delay,

[0034] QCL Type D: Spatial reception parameters.

[0035] Types A to C may correspond to QCL information associated with synchronization processing of at least one of time and frequency, and type D may correspond to QCL information related to beam control.

[0036] The relationship that the UE assumes that a specific Control Resource Set (CORESET), channel or reference signal is in a specific QCL (e.g., QCL type D) with other CORESETs, channels or reference signals may also be referred to as QCL assumption.

[0037] The UE may also determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI status or QCL assumption of the signal / channel.

[0038] The TCI state may be, for example, information related to the QCL between the channel being the object (or the reference signal (ReferenceSignal(RS)) used for the channel) and other signals (for example, other downlink reference signals (DownlinkReferenceSignal(DL-RS))). The TCI state may also be set (indicated) by high-layer signaling, physical layer signaling, or a combination thereof.

[0039] In the present disclosure, the high-layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0040] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0041] The physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI))).

[0042] In addition, the channel / signal that becomes the application object of the TCI state can also be called the target channel / reference signal (target channel / RS), or simply referred to as the target, etc. The other signals mentioned above can also be called the reference reference signal (reference RS), source RS (source RS), or simply referred to as reference, etc.

[0043] The channel to which the TCI state is set (specified) may be, for example, a downlink shared channel (Physical Downlink Shared Channel (PDSCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH))), etc.

[0044] In addition, the RS (DL-RS) that forms a QCL relationship with the channel may be, for example, at least one of a synchronization signal block (Synchronization Signal Block (SSB)) and a channel state information reference signal (CSI-RS). Alternatively, the DL-RS may be a CSI-RS used for tracking (also called a tracking reference signal (TRS))), or a reference signal used for QCL detection (also called QRS).

[0045] The SSB is a signal block including at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS)), and a broadcast channel (Physical Broadcast Channel (PBCH)). The SSB may also be referred to as an SS / PBCH block.

[0046] The information element of the TCI state set by high-layer signaling ("TCI-state IE" of RRC) may also include one or more QCL information ("QCL-Info"). The QCL information may also include at least one of information related to the DL-RS that forms a QCL relationship (DL-RS relationship information) and information indicating the QCL type (QCL type information). The DL-RS relationship information may also include information such as the index of the DL-RS (for example, SSB index, non-zero power CSI-RS (Non-Zero-Power (NZP) CSI-RS) resource ID (identifier)), the index of the cell where the RS is located, and the index of the bandwidth part (Bandwidth Part (BWP)) where the RS is located.

[0047] (Spatial relationship between SRS and PUSCH)

[0048] In Rel.15NR, the UE can also receive information (SRS setting information, for example, parameters in the "SRS-Config" of the RRC control element) used in sending a measurement reference signal (for example, a sounding reference signal (SRS)).

[0049] Specifically, the UE may also receive at least one of information related to one or more SRS resource sets (SRS resource set information, for example, "SRS-ResourceSet" of the RRC control element) and information related to one or more SRS resources (SRS resource information, for example, "SRS-Resource" of the RRC control element).

[0050] An SRS resource set may also be associated with a specific number of SRS resources (or the specific number of SRS resources may be grouped). Each SRS resource may also be identified by an SRS resource identifier (SRS Resource Indicator (SRI)) or an SRS resource ID (Identifier).

[0051] The SRS resource set information may also include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and information on the usage of the SRS.

[0052] Here, the SRS resource type may also represent any one of periodic SRS (Periodic SRS (P-SRS)), semi-persistent SRS (Semi-Persistent SRS (SP-SRS)), and aperiodic CSI (Aperiodic SRS (A-SRS)). In addition, the UE may also periodically (or periodically after activation) send P-SRS and SP-SRS, and send A-SRS based on the SRS request of the DCI.

[0053] In addition, the purpose (RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse") may be, for example, beam management (beamManagement), codebook (codebook (CB)), noncodebook (noncodebook (NCB)), antenna switching, etc. SRS for codebook or non-codebook purposes may also be used in the decision of precoding transmitted by a codebook-based or non-codebook-based uplink shared channel (Physical Uplink Shared Channel (PUSCH)) based on SRI.

[0054] For example, in the case of codebook-based transmission, the UE may also determine the precoding for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI) and Transmitted Precoding Matrix Indicator (TPMI). In the case of non-codebook-based transmission, the UE may also determine the precoding for PUSCH transmission based on SRI.

[0055] SRS resource information may also include SRS resource ID (SRS-ResourceId), SRS port number, SRS port number, sending comb, SRS resource mapping (for example, time and / or frequency resource location, resource offset, resource period, number of repetitions, number of SRS code elements, SRS bandwidth, etc.), jump association information, SRS resource type, sequence ID, SRS spatial relationship information, etc.

[0056] The spatial relationship information of SRS (for example, "spatialRelationInfo" of RRC information element) may also indicate the spatial relationship information between a specific reference signal and SRS. The specific reference signal may also be at least one of a synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and an SRS (for example, other SRS). The SS / PBCH block may also be referred to as a synchronization signal block (SSB).

[0057] The spatial relationship information of SRS may also include at least one of an SSB index, a CSI-RS resource ID, and an SRS resource ID as an index of the above-mentioned specific reference signal.

[0058] In addition, in the present disclosure, the SSB index, SSB resource ID, and SSB resource indicator (SSBRI) may also be replaced with each other. In addition, the CSI-RS index, CSI-RS resource ID, and CSI-RS resource indicator (CSI-RS Resource Indicator (CRI)) may also be replaced with each other. In addition, the SRS index, SRS resource ID, and SRI may also be replaced with each other.

[0059] The spatial relationship information of the SRS may also include a serving cell index, a BWP index (BWP ID), etc. corresponding to the above-mentioned specific reference signal.

[0060] In the case where spatial relationship information related to SSB or CSI-RS and SRS is set for a certain SRS resource, the UE may also use the same spatial domain filter (spatial domain transmit filter) as the spatial domain filter (spatial domain receive filter) used for receiving the SSB or CSI-RS to transmit the SRS resource. In this case, the UE may also assume that the UE receive beam of the SSB or CSI-RS is the same as the UE transmit beam of the SRS.

[0061] In the case where spatial relationship information related to other SRS (reference SRS) and the SRS (target SRS) is set for a certain SRS (target SRS) resource, the UE may also use the same spatial domain filter (spatial domain transmission filter) as the spatial domain filter (spatial domain transmission filter) used for transmitting the reference SRS to transmit the target SRS resource. That is, in this case, the UE may also assume that the UE transmission beam of the reference SRS is the same as the UE transmission beam of the target SRS.

[0062] The UE may also determine the spatial relationship of the PUSCH scheduled by the DCI based on the value of a specific field (e.g., SRS resource identifier (SRI) field) in the DCI (e.g., DCI format 0_1). Specifically, the UE may also use the spatial relationship information of the SRS resource determined based on the value of the specific field (e.g., SRI) (e.g., "spatialRelationInfo" of the RRC information element) for PUSCH transmission.

[0063] In Rel.15 / 16NR, when codebook-based transmission is used for PUSCH, the UE may also be configured with an SRS resource set having a maximum of two SRS resources for the purpose of the codebook through RRC, and be indicated one of the maximum two SRS resources through DCI (1-bit SRI field). The transmit beam of PUSCH is specified by the SRI field.

[0064] The UE may also determine the TPMI and the number of layers (transmission rank) for the PUSCH based on the precoding information and the number of layers field (hereinafter also referred to as the precoding information field). The UE may also select precoding from the uplink codebook for the number of ports based on the TPMI, the number of layers, etc., which is the same as the number of SRS ports indicated by "nrofSRS-Ports" of the higher layer parameter set for the SRS resource specified by the SRI field.

[0065] In Rel.15 / 16NR, when non-codebook based transmission is used for PUSCH, the UE can also be set with a SRS resource set with a maximum of four SRS resources for non-codebook use through RRC, and one of the maximum four SRS resources can be indicated through DCI (2-bit SRI field).

[0066] The UE may also determine the number of layers (transmission rank) used for the PUSCH based on the SRI field. For example, the UE may determine that the number of SRS resources specified by the SRI field is the same as the number of layers used for the PUSCH. In addition, the UE may also calculate the precoding of the SRS resources.

[0067] In the case where a CSI-RS (also referred to as an associated CSI-RS) associated with the SRS resource (or the SRS resource set to which the SRS resource belongs) is set by a higher layer, the transmit beam of the PUSCH can also be calculated based on (the measurement of) the set associated CSI-RS. Otherwise, the transmit beam of the PUSCH can also be specified by the SRI.

[0068] In addition, the UE may be configured to use codebook-based PUSCH transmission or non-codebook-based PUSCH transmission through a higher layer parameter "txConfig" indicating a transmission scheme. This parameter may also indicate a value of "codebook" or "non-codebook".

[0069] In the present disclosure, codebook-based PUSCH (codebook-based PUSCH transmission, codebook-based transmission) may also mean PUSCH when "codebook" is set as the transmission scheme in the UE. In the present disclosure, non-codebook-based PUSCH (non-codebook-based PUSCH transmission, non-codebook-based transmission) may also mean PUSCH when "non-codebook" is set as the transmission scheme in the UE.

[0070] (UL TCI status)

[0071] In NR, as a beam indication method for UL, the use of UL TCI status is being studied. UL TCI status is similar to the notification of DL beam (DL TCI status) of UE. In addition, DL TCI status can also be interchanged with TCI status for PDCCH / PDSCH.

[0072] The UL TCI state can also be set to the UE through the spatial relationship information specified in a specific version (for example, spatialRelationInfo-r17 specified in Rel.17) (also referred to as UL TCI state information). The UL TCI state can be called a unified TCI state (unified TCI state (U-TCI state)), a spatial relationship, a spatial relationship of a specific version, etc.

[0073] One or more of the configured UL TCI states may also be activated / deactivated using MAC CE. In addition, according to the configured / activated UL TCI state, spatial relationship information for at least one of A-SRS, PUSCH, PUCCH, and PRACH may also be specified to the UE via DCI.

[0074] The channel / signal (also referred to as the target channel / RS) for which the UL TCI state is set (specified) may be, for example, at least one of a demodulation reference signal (DeModulation Reference Signal (DMRS)) for PUSCH, PUSCH, DMRS for PUCCH, a random access channel (Physical Random Access Channel (PRACH)), SRS, etc.

[0075] In addition, the RS (reference RS) that has a QCL relationship with the channel / signal can be, for example, a DL RS (for example, SSB, CSI-RS, TRS, etc.) or a UL RS (for example, SRS, SRS for beam management, etc.).

[0076] In the UL TCI state, the RS that is in a QCL relationship with the channel / signal can also be associated with the panel (panel ID) used to receive or send the RS. The association can be explicitly set (or specified) through high-level signaling (e.g., RRC signaling, MAC CE, etc.) or can be implicitly determined.

[0077] The correspondence between the RS and the panel ID may be set by being included in the UL TCI status information, or may be set by being included in at least one of the resource setting information, the spatial relationship information, etc. of the RS.

[0078] The QCL type represented by the UL TCI state can be either the existing QCL type AD or other QCL types, and can also include a specific spatial relationship, an associated antenna port (port index), and the like.

[0079] If an associated panel ID is specified for UL transmission (for example, specified by DCI), the UE may also use the panel corresponding to the panel ID for the UL transmission. The panel ID may also be associated with the UL TCI state. When the UL TCI state is specified (or activated) for a specific UL channel / signal, the UE may also determine the panel used in the UL channel / signal transmission according to the panel ID associated with the UL TCI state.

[0080] However, no research has been conducted on how to control the UL beam used by the UE when the UE is placed in the UL TCI state. If this control is not clear, there is a concern that the increase in communication throughput may be suppressed.

[0081] For example, when the UL TCI state is introduced, when the SSB / CSI-RS is used as a reference signal for PUSCH transmission for the above-mentioned codebook-based PUSCH, it is considered that the SRS of the purpose = codebook is not set. In this case, the base station considers determining the TPMI, transmission rank, etc. based on the UE's DL CSI measurement (feedback report) rather than the SRS measurement.

[0082] In this case, there is no need to include the SRI field in the DCI format, but there is no study on how to notify QCL (spatial relationship) information, the number of antenna ports, etc. for PUSCH when the SRI field is not used.

[0083] Therefore, the inventors of the present invention have conceived a method for appropriately performing PUSCH transmission in consideration of the case where the UL TCI state is introduced.

[0084] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods involved in each embodiment can be applied individually or in combination. In addition, the embodiments of the present disclosure can also be used when the UL TCI state is not introduced.

[0085] In addition, in the present disclosure, “A / B” may also mean “at least one of A and B”.

[0086] In the present disclosure, activation, deactivation, indication (or indication), selection, configuration, update, determination, etc. may also be used interchangeably.

[0087] In the present disclosure, panel, beam, panel group, beam group, uplink (UL) transmitting entity, TRP, spatial relationship information (SRI), spatial relationship, control resource set (CORESET), physical downlink shared channel (PDSCH), codeword, base station, specific antenna port (for example, demodulation reference signal (DMRS)) port), specific antenna port group (for example, DMRS port group), specific group (for example, code division multiplexing (CDM)) group, specific reference signal group, CORESET group), specific resource (for example, specific reference signal resource), specific resource set (for example, specific reference signal resource set), CORESET pool, PUCCH group (PUCCH resource group), spatial relationship group, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state (unified TCI state), QCL, etc. can also be replaced with each other.

[0088] In addition, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) can also be replaced with each other. "Spatial relationship information" can also be replaced with "a collection of spatial relationship information", "one or more spatial relationship information", etc. TCI state and TCI can also be replaced with each other.

[0089] In the present disclosure, index, ID, indicator, resource ID can also be replaced with each other. In addition, in the present disclosure, sequence, list, set, group, group, cluster, subset, etc. can also be replaced with each other.

[0090] In the following embodiments, spatial relationship information (spatialRelationInfo), spatial relationship information specified in a specific version (for example, spatialRelationInfo-r17 specified in Rel.17), TCI state specified in a specific version (for example, TCIstate-r17 specified in Rel.17), etc. may also be interchangeable.

[0091] Furthermore, in the following embodiments, the spatial relationship information ID (spatialRelationInfoId), the spatial relationship information ID specified in a specific version (for example, spatialRelationInfoId-r17 specified in Rel.17), the TCI state ID specified in a specific version (for example, TCIstateId-r17 specified in Rel.17), etc. may be replaced with each other. In addition, the names of these parameters are not limited to these.

[0092] In the description of the following implementation methods, "Spatial Relation Information (Spatial Relation Information (SRI))", "Spatial relationship information for PUSCH", "spatial relationship", "UL beam", "UE's transmit beam", "ULTCI", "UL TCI state", "spatial relationship of UL TCI state", SRS Resource Indicator (SRS Resource Indicator (SRI)), SRS resources, precoding, etc. may also be interchangeable.

[0093] (Wireless Communication Method)

[0094] <First embodiment>

[0095] The first embodiment relates to codebook-based PUSCH using the U-TCI framework.

[0096] [DCI field used to specify spatial relationship information]

[0097] The UE may also determine (select) the UL TCI of the PUSCH based on part or all of a specific field included in the DCI. The specific field may be a new field not included in the existing Rel.15NR DCI format (for example, it may also be called a UL beam field, a UL TCI field, etc.), or a field included in the existing Rel.15NR DCI format (for example, an SRI field, an SRS request field, a precoding information field, etc.).

[0098] The UE may determine the UL TCI of the PUSCH based on the above-mentioned specific fields included in the DCI according to one or more spatial relationship information (higher layer parameter "spatialRelationInfo") set or activated through higher layer signaling (eg, RRC signaling, MAC signaling).

[0099] The UE may also be configured with the list of the above-mentioned spatial relationship information through RRC signaling. The UE may also be configured with one or more spatial relationship information in the list of the above-mentioned spatial relationship information through MAC CE.

[0100] The value of the above-mentioned specific field included in the DCI may also be equivalent to at least one of the spatial relationship information ID associated with the spatial relationship information (for example, the high-level parameter "spatialRelationInfoId"), the entry number of the above-mentioned list (for example, when the above-mentioned list contains n spatial relationship information, the entry numbers are 0 to n-1), the index of the activated spatial relationship information (the first activated spatial relationship information is index 0, the second activated spatial relationship information is index 1, ...), etc.

[0101] The spatial relationship information may also include information related to a reference signal (eg, SSB / CSI-RS / SRS). The UE may also transmit the PUSCH according to the spatial relationship related to the reference signal.

[0102] In the first embodiment, the DCI including the above-mentioned specific field (eg, UL TCI field) may not include the SRI field. In other words, the DCI format for scheduling the PUSCH may include the above-mentioned specific field instead of the SRI field.

[0103] [Setting / specifying the number of antenna ports]

[0104] The UE may also determine the TPMI (or precoding) and RI (or number of layers) based on the precoding information field. The UE may also select precoding from a codebook for uplink.

[0105] The number of antenna ports used for the codebook (e.g., for referencing the codebook) may be set to the UE via higher layer signaling (e.g., RRC information element "PUSCH-Config" for PUSCH configuration), or may be indicated to the UE via a DCI field (e.g., antenna port number field). In addition, the code point of the antenna port number field may also be mapped to 1, 2, 4, or other supported antenna port numbers.

[0106] The number of antenna ports used for the codebook is independent of the number of antenna ports used for SRS resources (for example, given by the higher layer parameter "nrofSRS-Ports"). In other words, the number of antenna ports used for the codebook may also be notified to the UE by a higher layer parameter different from the higher layer parameter of the number of antenna ports used for SRS resources, or by an antenna port number field.

[0107] The UE may select precoding from a codebook for uplink for which the number of antenna ports is set or specified, based on the TPMI, the number of layers, and the like.

[0108] The UE may also transmit the PUSCH using a set or specified number of antenna ports.

[0109] Figure 1 This is a diagram showing an example of the correspondence between the antenna port number field and the number of antenna ports in the first embodiment. In this example, for example, the values ​​of the antenna port number field are 0, 1, and 2, corresponding to a single port (port number 1), 2 ports (port number 2), and 4 ports (port number 4), respectively.

[0110] This correspondence may be pre-defined through specifications, may be set through higher-layer signaling, may be specified through DCI, or may be determined based on UE capabilities.

[0111] The above setting / designation of the number of antenna ports may also be applied only to a case where any one of the following conditions is met:

[0112] The spatial relationship information specified by the above-mentioned specific field includes information related to the reference DL reference signal (for example, SSB / CSI-RS),

[0113] The spatial relationship information specified by the above-mentioned specific field includes information related to a reference UL reference signal (for example, SRS).

[0114] In addition, when the spatial relationship information specified by the above-mentioned specific field includes information related to the reference UL reference signal, the number of antenna ports can also be determined by the number of antenna ports set for the reference UL reference signal (for example, the number of antenna ports for SRS resources included in the RRC information element "SRS-Config" used for SRS setting) (in this case, the setting / indication of the above-mentioned number of antenna ports may not be applied).

[0115] In addition, when the spatial relationship information specified by the above-mentioned specific field includes information related to the reference DL reference signal, either the existing Rel.15 / 16 table indicating the correspondence between the precoding information field, TPMI and the number of layers or the table indicating the new correspondence can be referred to.

[0116] In the case where the DCI includes the above-mentioned antenna port number field, the precoding information field is used to indicate the TPMI and the number of layers. The precoding information field in this case may also be specified as X bits (for example, X=6). The UE may also assume that the precoding information field has a fixed size regardless of the value of the antenna port number field (the number of antenna ports represented by the antenna port number field).

[0117] In the existing NR specification, in the case of codebook-based transmission, the size of the precoding information field is variable based on the number of antenna ports that is semi-statically set (for example, the same number of ports as the number of SRS ports indicated by the "nrofSRS-Ports" of the higher layer parameter). On the other hand, this is because the precoding information field is preferably a fixed size in the case where the number of antenna ports is dynamically specified by the antenna port number field (this is because it is difficult to decode appropriately if the size of the DCI changes dynamically).

[0118] The value of X may be pre-defined through specifications, may be set through higher-layer signaling, or may be determined based on UE capabilities.

[0119] [Sending plan]

[0120] A transmission scheme for activating the control of the first embodiment may also be newly defined. Figure 2 This is a diagram showing an example of setting a transmission scheme for activating control of the first embodiment. This example is described using Abstract Syntax Notation One (ASN.1) notation (it is only an example and may not be a complete description).

[0121] In this example, the PUSCH setting information (PUSCH-Config) may also include a new parameter (txConfig-r17) indicating the transmission scheme to replace the existing parameter (txConfig) indicating the transmission scheme. In addition to the existing "codebook" and "non-codebook", the new parameter can also take the value of "new transmission scheme (newTxScheme)". The UE to which the "new transmission scheme" is set as a new parameter can also activate the control of the first embodiment (for example, the UE can also foresee that the spatial relationship information specified for PUSCH includes CSI-RS / SSB as a reference reference signal in addition to or instead of SRS).

[0122] In addition, the name of the new parameter (txConfig-r17) and the name of the new transmission scheme (newTxScheme) are not limited to these. For example, "new transmission scheme (newTxScheme)" can also be replaced by "new transmission scheme for codebook (newTxSchemeForCodebook)" indicating a new transmission scheme for codebook.

[0123] According to the first embodiment described above, the UE can appropriately determine the ULTCI for the PUSCH based on the codebook. In addition, the first embodiment can also be applied to non-codebook-based transmission.

[0124] <Second embodiment>

[0125] The second embodiment relates to non-codebook based PUSCH using the U-TCI framework.

[0126] The UE may also determine (select) the UL TCI of the PUSCH based on part or all of a specific field included in the DCI. The specific field may be a new field not included in the existing Rel.15NR DCI format (for example, it may also be called a UL beam field, a UL TCI field, etc.), or a field included in the existing Rel.15NR DCI format (for example, an SRI field, an SRS request field, a precoding information field, etc.).

[0127] When the specific field is an SRI field, the SRI field may be mapped to an SRS resource with a usage=non-codebook. In this case, the UE may not expect that the DCI includes the new field (eg, UL TCI field). For simplicity, the new field is described below as a UL TCI field.

[0128] In the second embodiment, the DCI including the above-mentioned specific field (eg, UL TCI field) may not include the SRI field. In other words, the DCI format for scheduling the PUSCH may include the above-mentioned specific field instead of the SRI field.

[0129] Spatial relation information (eg, spatialRelationInfo-r17) specified in a specific release is set for non-codebook PUSCH transmission, and a UE for which an SRS resource set with usage = non-codebook is set can also expect that the DCI for scheduling PUSCH includes a UL TCI field.

[0130] The UE may also interpret the UL TCI field as an existing SRI field. For example, the UE may also determine that the code point of the UL TCI field follows Table 7.3.1.1.2-28 / 29 / 30 / 31 (or the same as these tables) recorded in TS 38.212 V16.2.0 of the existing Rel.16 specification, and based on the value of the UL TCI field, determine one or more SRS resources included in the SRS resource set with purpose = non-codebook for the spatial relationship information of PUSCH. The UE may also determine the UL TCI based on the one or more SRS resources.

[0131] Table 7.3.1.1.2-28 / 29 / 30 / 31 corresponds to the correspondence relationship (table) between the SRI field and SRI used for non-codebook-based PUSCH transmission.

[0132] Figure 3 Table 7.3.1.1.2-29 described in TS 38.212 V16.2.0 is shown. This table relates to L max = 2 for non-codebook based PUSCH transmission. max The value of can be set by the higher-layer parameter "maxMIMO-Layers" indicating the maximum number of MIMO (Multi Input Multi Output) layers, or can be given by the maximum number of PUSCH layers supported by the UE.

[0133] The Bit field mapped to index column indicates the value of the SRI field. SRS Indicates the number of SRS resources configured for the SRS resource set. Figure 3 N is shown in SRS =2,3,4.

[0134] In the case of the above replacement, the UE can also be regarded as Figure 3 The Bitfield mapped to index column represents the value of the UL TCI field.

[0135] A UE configured with spatial relation information (eg, spatialRelationInfo-r17) specified in a specific release for non-codebook PUSCH transmission may also assume that the DCI for scheduling PUSCH includes the UL TCI field. In this case, the UE may not be configured with an SRS resource set with usage = non-codebook.

[0136] The UE may also assume that the code point of the UL TCI field is mapped to one or more spatial relationship information set / activated for PUSCH. Each spatial relationship information may also include SRS as a reference reference signal. The UE may also determine the UL TCI of at least one of the spatial relationship information set / activated based on the value of the UL TCI field. Each spatial relationship information may also include SRS as a reference reference signal.

[0137] Figure 4A as well as Figure 4B and Figure 5A as well as Figure 5B 1 is a diagram showing an example of a table related to spatial relationship information indication according to the second embodiment. These tables relate to the correspondence between the UL TCI field (codepoint (Codepoint)) and the spatial relationship information (spatialRelationInfo(s)) for non-codebook based PUSCH transmission. Figure 4A , Figure 4B , Figure 5A as well as Figure 5B Corresponding to the above L max =1, 2, 3 and 4.

[0138] In addition, Figure 3 N SRS Similarly, N SpatialRelationInfo = 2, 3, 4 can also correspond to every 2 columns from the left in each figure. Here, N SpatialRelationInfo It may also mean the amount of spatial relationship information that is set / activated (for non-codebook based transmission).

[0139] exist Figure 4A , Figure 4B , Figure 5A as well as Figure 5B In the above, spatialRelationInfo(s)=i may also mean the i-th spatial relationship information set for PUSCH. spatialRelationInfo(s)=i may also mean the i-th spatial relationship information from the smallest (or largest) spatial relationship information ID set for PUSCH.

[0140] In the case where the specific field is the SRS request field, the UL TCI may also be determined based on (measurement of) the configured CSI-RS. In this case, the SRI field may also be 0 bits. For example, the UE may also determine the UL TCI (or precoding) based on the measurement of the CSI-RS (associated CSI-RS) associated with the SRS (e.g., A-SRS) specified by the SRS request field.

[0141] According to the second embodiment described above, the UE can appropriately determine the ULTCI for the non-codebook-based PUSCH.

[0142] <Third Embodiment>

[0143] The third embodiment relates to codebook-based / non-codebook-based PUSCH.

[0144] In the third embodiment, the spatial relationship of the DMRS for PUSCH (PUSCH DMRS) may also be set by the TCI state.

[0145] For example, when a certain TCI state is set / activated for PUSCH (or PUSCH DMRS), the UL beam (spatial domain filter) for codebook-based / non-codebook-based PUSCH may also be determined by the same spatial domain filter as the spatial domain filter used in the reception of QCL type D (QCL-D) in the TCI state. For example, the UE may also determine that the spatial domain filter for PUSCH is the same spatial domain filter as the spatial domain filter used in the reception of the reference RS (e.g., SSB / CSI-RS) of QCL-D in the TCI state set / activated for the PUSCH.

[0146] In the case where multiple TCI states are set / activated for PUSCH (or PUSCH DMRS), one TCI state may be specified by DCI (e.g., a specific field of the DCI (described in the first and second embodiments)). The UL beam (spatial domain filter) for codebook-based / non-codebook-based PUSCH may also be determined by the same spatial domain filter as that used in the reception of QCL type D (QCL-D) in the specified TCI state.

[0147] The DCI for scheduling PUSCH (or the above-mentioned specific field of the DCI) may also be variable depending on the number of TCI states that are set / activated.

[0148] In addition, the TCI state (TCI state ID) of the third embodiment may also refer to the DL TCI state (DL TCI state ID). In this case, there is no need to reconfigure / activate the UL TCI state, and the DL TCI state can be used not only as the TCI state of PDCCH / PDSCH / CSI-RS, but also as the UL TCI state of PUSCH.

[0149] According to the third embodiment described above, the UE can appropriately determine the spatial domain filter of the PUSCH based on the TCI state.

[0150] <Other>

[0151] At least one of the above-mentioned embodiments may also be applied only to a UE that reports a specific UE capability (UE capability) or supports the specific UE capability.

[0152] The specific UE capability may also represent at least one of the following:

[0153] (Replacement Usage = SRS in Codebook) Whether codebook-based PUSCH transmission using spatial relationship information for PUSCH including SSB / CSI-RS as reference signal is supported,

[0154] (Replacement Usage = Non-codebook SRS) Whether non-codebook based PUSCH transmission using spatial relation information for PUSCH including SSB / CSI-RS as reference signal is supported,

[0155] The number (or maximum number) of spatial relationships supported for PUSCH transmission.

[0156] In addition, at least one of the above-mentioned embodiments may also be applied to a case where the UE is configured with specific information associated with the above-mentioned embodiments through high-layer signaling (if not configured, for example, the operation of Rel.15 / 16 is applied). For example, the specific information may also be information indicating activation of UL TCI (for example, spatialRelation-r17), information indicating activation of U-TCI, information indicating activation of spatial relationship information for PUSCH containing SSB / CSI-RS as a reference reference signal, information indicating the above-mentioned new transmission scheme, any RRC parameter for a specific version (for example, Rel.17), etc.

[0157] At least one of the above-mentioned embodiments can also be applied to the situation where all the reference reference signals of the spatial relationship information (TCI state, UL TCI state) set / activated in the UE are DL-RS (for example, SSB / CSI-RS) (in other words, the spatial relationship information in which the reference reference signal is not set / activated is SRS).

[0158] (Wireless Communication System)

[0159] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0160] Figure 61 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0161] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0162] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0163] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0164] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0165] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0166] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0167] 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).

[0168] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0169] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0170] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0171] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0172] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0173] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0174] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0175] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0176] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0177] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0178] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0179] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0180] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0181] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0182] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0183] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0184] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0185] (Base Station)

[0186] Figure 7 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0187] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0188] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0189] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0190] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0191] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0192] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0193] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0194] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0195] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0196] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0197] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0198] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0199] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0200] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0201] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0202] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0203] Furthermore, the transmitting / receiving unit 120 may transmit to the user terminal 20 downlink control information (Downlink Control Information (DCI)) including a specific field used for determining an uplink transmission configuration indication state (Uplink Transmission Configuration Indication state (UL TCI state)).

[0204] The transmitting and receiving unit 120 may also receive a codebook-based / non-codebook-based uplink shared channel (PUSCH) transmitted by the user terminal 20 by applying precoding determined based on the UL TCI state.

[0205] (User Terminal)

[0206] Figure 8 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0207] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0208] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0209] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0210] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0211] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0212] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0213] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0214] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0215] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0216] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0217] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0218] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0219] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0220] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0221] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0222] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0223] In addition, the control unit 210 may determine the uplink transmission configuration indication state (Uplink Transmission Configuration Indication state (UL TCI state)) based on a specific field included in downlink control information (Downlink Control Information (DCI)).

[0224] The DCI may be a DCI format for scheduling PUSCH (for example, DCI format 0_0, 0_1, 0_2, etc.) The DCI may not include a sounding reference signal (Sounding Reference Signal (SRS)) resource indicator (SRS Resource Indicator (SRI)) field.

[0225] The specific field can be a new field not included in the existing Rel.15NR DCI format (for example, it can also be called UL beam field, UL TCI field, etc.), or it can be a field included in the existing Rel.15NR DCI format (for example, SRI field, SRS request field, precoding information field, etc.).

[0226] The transmitting and receiving unit 220 may also apply precoding determined based on the UL TCI state to transmit the uplink shared channel based on the codebook.

[0227] The precoding may be determined based on the number of antenna ports given by higher-layer parameters different from the number of antenna ports for measuring reference signal (Sounding Reference Signal (SRS)) resources, or by a codebook for the number of antenna ports indicated by the field of the DCI.

[0228] The control unit 210 may also assume that, when the DCI includes a field indicating the number of antenna ports, the precoding information and layer number field of the DCI have a fixed size regardless of the indicated number of antenna ports.

[0229] The transmitting and receiving unit 220 may also apply precoding determined based on the UL TCI state to transmit a non-codebook based uplink shared channel.

[0230] The control unit 210 may also determine that the code point of the specific field follows the same correspondence between the SRS Resource Indicator (SRI) field and the SRI for transmission based on a non-codebook uplink shared channel, and determine the UL TCI based on one or more SRS resources included in the SRS resource set whose purpose = non-codebook and is specified by the value of the specific field (for example, the UL TCI used for the one or more SRS resources may also be used as the UL TCI).

[0231] The control unit 210 may also determine that the code point of the specific field is mapped to one or more spatial relationship information set or activated for the uplink shared channel, and determine the UL TCI based on at least one of the spatial relationship information specified by the value of the specific field (for example, it may also be determined that the spatial relationship information is the UL TCI).

[0232] (Hardware Structure)

[0233] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0234] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0235] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 9 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0236] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0237] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0238] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0239] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0240] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0241] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0242] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0243] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0244] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0245] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0246] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0247] (Variation Example)

[0248] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc., depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0249] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0250] Here, the parameter set may also refer to a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0251] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0252] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0253] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0254] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0255] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0256] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0257] In addition, when a time slot or a mini time slot is called TTI, more than one TTI (i.e., more than one time slot or more than one mini time slot) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0258] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0259] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0260] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0261] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0262] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0263] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

[0264] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0265] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0266] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific channel / signal other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0267] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0268] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0269] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0270] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0271] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0272] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0273] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0274] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0275] Furthermore, notification of specific information (for example, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (for example, by not notifying the specific information or by notifying other information).

[0276] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0277] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0278] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0279] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0280] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0281] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0282] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0283] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0284] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or some other appropriate terminology.

[0285] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0286] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0287] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0288] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node according to the circumstances. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0289] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0290] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (Ultra Mobile Broadband (UMB)), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0291] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0292] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0293] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0294] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0295] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0296] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0297] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0298] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" with each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0299] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0300] When the terms "include", "including", and variations thereof are used in the present disclosure, these terms, like the term "comprising", have an inclusive meaning. Furthermore, the term "or" used in the present disclosure does not mean an exclusive-or.

[0301] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0302] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: a receiving unit, receiving a MAC control element (MAC CE) for activating one or more TCI states used in a downlink shared channel (PDSCH), a downlink control channel (PDCCH), a channel state information reference signal (CSI-RS), and an uplink shared channel (PUSCH) from a list of transmission configuration indication states (TCI states), and receiving downlink control information (DCI); A control unit, based on a specific field included in the DCI, determines a TCI state from the one or more TCI states; as well as The transmitting unit applies a spatial domain filter determined based on the TCI state and transmits an uplink shared channel based on the codebook.

2. The terminal according to claim 1, wherein: The DCI does not include a Sounding Reference Signal Resource Indicator (SRI) field.

3. The terminal according to claim 1, wherein: The TCI status includes a synchronization signal block (Synchronization Signal Block (SSB)) or information related to CSI-RS.

4. A wireless communication method, which is a wireless communication method of a terminal, comprising: The step of receiving a MAC control element (MAC CE) for activating one or more TCI states used in a downlink shared channel (PDSCH), a downlink control channel (PDCCH), a channel state information reference signal (CSI-RS), and an uplink shared channel (PUSCH) from a list of transmission configuration indication states (TCI states); The step of receiving downlink control information, namely DCI (Downlink Control Information); The step of determining a TCI state from the one or more TCI states based on a specific field included in the DCI; as well as The step of applying a spatial domain filter determined based on the TCI state and transmitting an uplink shared channel based on a codebook.

5. A base station, comprising: a transmitting unit, sending a MAC control element (MAC CE) for activating one or more TCI states used in a downlink shared channel (PDSCH), a downlink control channel (PDCCH), a channel state information reference signal (CSI-RS), and an uplink shared channel (PUSCH) from a list of transmission configuration indication states (TCI states), and the transmitting unit sends downlink control information (DCI); A control unit, based on a specific field included in the DCI, determines a TCI state from the one or more TCI states; The receiving unit receives a codebook-based uplink shared channel, where the codebook-based uplink shared channel is sent by applying a spatial domain filter determined based on the TCI state.

6. A system comprising a terminal and a base station, The terminal has: a receiving unit, receiving a MAC control element (MAC CE) for activating one or more TCI states used in a downlink shared channel (PDSCH), a downlink control channel (PDCCH), a channel state information reference signal (CSI-RS), and an uplink shared channel (PUSCH) from a list of transmission configuration indication states (TCI states), and receiving downlink control information (DCI); A control unit, based on a specific field included in the DCI, determines a TCI state from the one or more TCI states; as well as a transmitting unit, applying a spatial domain filter determined based on the TCI state, and transmitting an uplink shared channel based on a codebook, The base station sends the DCI.

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