WO2022029933A1 - Terminal, procédé de communication sans fil, et station de base - Google Patents

Terminal, procédé de communication sans fil, et station de base Download PDF

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Publication number
WO2022029933A1
WO2022029933A1 PCT/JP2020/030041 JP2020030041W WO2022029933A1 WO 2022029933 A1 WO2022029933 A1 WO 2022029933A1 JP 2020030041 W JP2020030041 W JP 2020030041W WO 2022029933 A1 WO2022029933 A1 WO 2022029933A1
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Prior art keywords
transmission
information
srs
dci
field
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PCT/JP2020/030041
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English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ウェイチー スン
ジン ワン
ラン チン
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株式会社Ｎｔｔドコモ
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Priority to CN202080104367.1A priority Critical patent/CN116018834A/zh
Priority to PCT/JP2020/030041 priority patent/WO2022029933A1/fr
Publication of WO2022029933A1 publication Critical patent/WO2022029933A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • This disclosure relates to terminals, wireless communication methods and base stations in next-generation mobile communication systems.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP Rel.10-14 LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).
  • a successor system to LTE for example, 5th generation mobile communication system (5G), 5G + (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 or later, etc.
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • NR New Radio
  • UL transmission setting instruction state Transmission Configuration Indication state (TCI state)
  • TCI state Transmission Configuration Indication state
  • precoder beam instruction method for uplink (UL).
  • one of the purposes of the present disclosure is to provide a terminal, a wireless communication method, and a base station capable of appropriately controlling PUSCH transmission.
  • the terminal is an uplink transmission setting instruction state (Uplink Transmission Configuration Indication state (UL TCI state)) based on a specific field included in the downlink control information (DCI)). It has a control unit for determining the above, and a transmission unit for transmitting a codebook-based uplink shared channel by applying a precoder determined based on the UL TCI state.
  • UL TCI state Uplink Transmission Configuration Indication state
  • DCI Downlink Control Information
  • PUSCH transmission can be appropriately controlled.
  • FIG. 1 is a diagram showing an example of a correspondence relationship between an antenna port number field and an antenna port number in the first embodiment.
  • FIG. 2 is a diagram showing an example of setting a transmission scheme for enabling the control of the first embodiment.
  • FIG. 3 shows the table 7.3.1.1.2-29 described in TS 38.212 V16.2.0.
  • 4A and 4B are diagrams showing an example of a table relating to spatial relation information instruction according to the second embodiment.
  • 5A and 5B are diagrams showing an example of a table relating to the spatial relation information instruction according to the second embodiment.
  • FIG. 6 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 7 is a diagram showing an example of the configuration of the base station according to the embodiment.
  • FIG. 8 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
  • the UE may be referred to as at least one of a signal and a channel (signal / channel; in the present disclosure, “A / B”” based on the Transmission Configuration Indication state (TCI state).
  • TCI state Transmission Configuration Indication state
  • reception processing eg, at least one of reception, demapping, demodulation, decoding
  • transmission processing eg, transmission, mapping, precoding
  • Modulation at least one of coding
  • the TCI state may represent what applies to the downlink signal / channel.
  • the equivalent of the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.
  • the TCI state is information related to signal / channel pseudo-collocation (Quasi-Co-Location (QCL)), and may be referred to as spatial reception parameters, spatial relation information (SRI), or the like.
  • QCL Signal / channel pseudo-collocation
  • SRI spatial relation information
  • the TCI state may be set in the UE per channel or per signal.
  • QCL is an index showing the statistical properties of signals / channels. For example, when one signal / channel and another signal / channel have a QCL relationship, Doppler shift, Doppler spread, and average delay are performed between these different signals / channels. ), Delay spread, and spatial parameter (for example, spatial Rx parameter) can be assumed to be the same (QCL for at least one of these). You may.
  • the spatial reception parameter may correspond to the received beam of the UE (for example, the received analog beam), or the beam may be specified based on the spatial QCL.
  • the QCL (or at least one element of the QCL) in the present disclosure may be read as sQCL (spatial QCL).
  • QCL types A plurality of types (QCL types) may be specified for the QCL.
  • QCL types AD QCL types with different parameters (or parameter sets) that can be assumed to be the same may be provided, and the parameters (may be referred to as QCL parameters) are shown below:
  • QCL Type A Doppler shift, Doppler spread, average delay and delay spread
  • ⁇ QCL type B Doppler shift and Doppler spread
  • -QCL type C Doppler shift and average delay
  • -QCL type D Spatial reception parameter.
  • Types A to C may correspond to QCL information related to at least one of time and frequency synchronization processing, and type D may correspond to QCL information related to beam control.
  • the UE may assume that a given control resource set (Control Resource Set (CORESET)) has a specific QCL (eg, QCL type D) relationship with another CORESET, channel or reference signal. , QCL assumption (QCL assumption) may be called.
  • CORESET Control Resource Set
  • QCL assumption QCL assumption
  • the UE may determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI state of the signal / channel or the QCL assumption.
  • the TCI state is, for example, a target channel (or a reference signal for the channel (Reference Signal (RS))) and another signal (for example, another downlink reference signal (Downlink Reference Signal (DL-RS))). It may be information about QCL with.
  • the TCI state may be set (instructed) by higher layer signaling, physical layer signaling, or a combination thereof.
  • the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • MAC CE MAC Control Element
  • PDU MAC Protocol Data Unit
  • the broadcast information includes, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may be used.
  • MIB Master Information Block
  • SIB System Information Block
  • RMSI Minimum System Information
  • OSI Other System Information
  • the physical layer signaling may be, for example, downlink control information (DCI).
  • DCI downlink control information
  • the channel / signal to which the TCI state is applied may be referred to as a target channel / reference signal (target channel / RS) or simply a target, and the above-mentioned other signal is a reference reference signal (reference RS) or source.
  • RS reference reference signal
  • source RS may be simply called a reference.
  • the channel for which the TCI state is set may be, for example, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), or the like.
  • PDSCH Physical Downlink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • the RS (DL-RS) having a QCL relationship with the channel is, for example, at least a synchronization signal block (Synchronization Signal Block (SSB)) and a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)).
  • SSB Synchronization Signal Block
  • CSI-RS Channel State Information Reference Signal
  • the DL-RS may be a CSI-RS (also referred to as a Tracking Reference Signal (TRS)) used for tracking or a reference signal (also referred to as a QRS) used for QCL detection.
  • TRS Tracking Reference Signal
  • 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)).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the SSB may be referred to as an SS / PBCH block.
  • the information element of the TCI state (“TCI-state IE” of RRC) set by the upper layer signaling may include one or more QCL information (“QCL-Info”).
  • the QCL information may include at least one of information regarding the DL-RS that is related to the QCL (DL-RS-related information) and information indicating the QCL type (QCL type information).
  • the DL-RS related information includes the DL-RS index (for example, SSB index, non-zero power CSI-RS (Non-Zero-Power (NZP) CSI-RS) resource ID (Identifier)), and the index of the cell in which the RS is located.
  • Information such as the index of the Bandwidth Part (BWP) where the RS is located may be included.
  • the UE is in the information (SRS configuration information, eg, “SRS-Config” of the RRC control element) used to transmit the measurement reference signal (eg, Sounding Reference Signal (SRS)). Parameters) may be received.
  • SRS configuration information eg, “SRS-Config” of the RRC control element
  • SRS Sounding Reference Signal
  • the UE has information about one or more SRS resource sets (SRS resource set information, for example, "SRS-ResourceSet” of RRC control element) and information about one or more SRS resources (SRS resource). At least one piece of information, eg, the RRC control element "SRS-Resource”), may be received.
  • SRS resource set information for example, "SRS-ResourceSet” of RRC control element
  • SRS resource information about one or more SRS resources
  • One SRS resource set may be related to a predetermined number of SRS resources (a predetermined number of SRS resources may be grouped).
  • Each SRS resource may be specified by an SRS resource identifier (SRS Resource Indicator (SRI)) or an SRS resource ID (Identifier).
  • SRI SRS Resource Indicator
  • SRS resource ID Identifier
  • the SRS resource set information may include information on 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 an SRS usage (usage).
  • SRS-ResourceSetId SRS resource set ID
  • SRS-ResourceId SRS resource set ID
  • SRS resource type SRS resource type
  • SRS usage usage
  • the SRS resource types are periodic SRS (Periodic SRS (P-SRS)), semi-persistent SRS (Semi-Persistent SRS (SP-SRS)), and aperiodic CSI (Aperiodic SRS (A-SRS)). May indicate either.
  • the UE may transmit P-SRS and SP-SRS periodically (or periodically after activation), and may transmit A-SRS based on DCI's SRS request.
  • RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse" are, for example, beam management, codebook (CB), noncodebook (noncodebook (). NCB)), antenna switching, etc. may be used.
  • SRS for codebook or non-codebook use may be used to determine a precoder for codebook-based or non-codebook-based uplink shared channel (PUSCH) transmission based on SRI.
  • PUSCH uplink shared channel
  • the UE is based on SRI, transmission rank indicator (Transmitted Rank Indicator (TRI)), and transmission precoding matrix indicator (Transmitted Precoding Matrix Indicator (TPMI)).
  • the precoder for PUSCH transmission may be determined.
  • the UE may determine a precoder for PUSCH transmission based on SRI.
  • the SRS resource information includes SRS resource ID (SRS-ResourceId), number of SRS ports, SRS port number, transmission Comb, SRS resource mapping (for example, time and / or frequency resource position, resource offset, resource cycle, number of repetitions, SRS). It may include (number of symbols, SRS bandwidth, etc.), hopping-related information, SRS resource type, series ID, SRS spatial-related information, and the like.
  • SRS resource ID SRS-ResourceId
  • number of SRS ports for example, number of SRS ports, SRS port number, transmission Comb
  • SRS resource mapping for example, time and / or frequency resource position, resource offset, resource cycle, number of repetitions, SRS. It may include (number of symbols, SRS bandwidth, etc.), hopping-related information, SRS resource type, series ID, SRS spatial-related information, and the like.
  • the spatial relationship information of the SRS may indicate the spatial relationship information between the predetermined reference signal and the SRS.
  • the predetermined reference signal includes 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, another). It may be at least one of SRS).
  • the SS / PBCH block may be referred to as a sync signal block (SSB).
  • the SRS spatial relationship information may include at least one of the SSB index, the CSI-RS resource ID, and the SRS resource ID as the index of the predetermined reference signal.
  • the SSB index, SSB resource ID, and SSB Resource Indicator may be read as each other. Further, the CSI-RS index, the CSI-RS resource ID and the CSI-RS Resource Indicator (CRI) may be read as each other. Further, the SRS index, SRS resource ID and SRI may be read as each other.
  • the SRS spatial relationship information may include a serving cell index, a BWP index (BWP ID), and the like corresponding to the above-mentioned predetermined reference signal.
  • the UE When the SSB or CSI-RS and the spatial relation information regarding the SRS are set for a certain SRS resource, the UE has a spatial domain filter (spatial domain reception filter) for receiving the SSB or CSI-RS.
  • the SRS resource may be transmitted using the same spatial domain filter (spatial domain transmission filter). In this case, the UE may assume that the SSB or CSI-RS UE receive beam and the SRS UE transmit beam are the same.
  • the UE When the UE sets spatial relational information about another SRS (reference SRS) and the SRS (target SRS) for one SRS (target SRS) resource, the UE is a spatial domain filter for transmitting the reference SRS.
  • the target SRS resource may be transmitted using the same spatial domain filter (spatial domain transmission filter) as the (spatial domain transmission filter). That is, in this case, the UE may assume that the UE transmission beam of the reference SRS and the UE transmission beam of the target SRS are the same.
  • the UE may determine the spatial relationship of the PUSCH scheduled by the DCI based on the value of a predetermined field (eg, the SRS Resource Identifier (SRI) field) in the DCI (eg, DCI format 0_1). Specifically, the UE may use the spatial relationship information of the SRS resource (for example, the “spatialRelationInfo” of the RRC information element) determined based on the value of the predetermined field (for example, SRI) for the PUSCH transmission.
  • a predetermined field eg, the SRS Resource Identifier (SRI) field
  • the UE may use the spatial relationship information of the SRS resource (for example, the “spatialRelationInfo” of the RRC information element) determined based on the value of the predetermined field (for example, SRI) for the PUSCH transmission.
  • SRI SRS Resource Identifier
  • the UE when codebook-based transmission is used for PUSCH, the UE has a maximum of two SRS resources, and the SRS resource set of the codebook is set by RRC, and the maximum of two SRSs are set.
  • One of the resources may be designated by DCI (1 bit SRI field).
  • the transmitted beam of PUSCH will be specified by the SRI field.
  • the UE may determine the TPMI for PUSCH and the number of layers (transmission rank) based on the precoding information and the number of layers field (hereinafter, also referred to as the precoding information field). From the codebook for uplinks for the same number of ports as the number of SRS ports indicated by the higher layer parameter "nrofSRS-Ports" set for the SRS resource specified by the SRI field above, the UE can see the TPMI, The precoder may be selected based on the number of layers and the like.
  • the UE when non-codebook-based transmission is used for PUSCH, the UE has a maximum of 4 SRS resources, and the non-codebook SRS resource set is set by RRC, and the maximum of 4 SRS resources are set.
  • One or more of the SRS resources of may be indicated by DCI (2-bit SRI field).
  • the UE may determine the number of layers (transmission rank) for PUSCH based on the above 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 for PUSCH. Further, the UE may calculate the precoder of the SRS resource.
  • the transmission beam of the PUSCH is set. It may be calculated based on the related CSI-RS (measurement). Otherwise, the PUSCH transmit beam may be specified by SRI.
  • the UE may set whether to use the codebook-based PUSCH transmission or the non-codebook-based PUSCH transmission by the upper layer parameter "txConfig" indicating the transmission scheme.
  • the parameter may indicate a "codebook” or “nonCodebook” value.
  • the codebook-based PUSCH (codebook-based PUSCH transmission, codebook-based transmission) may mean a PUSCH when "codebook" is set as a transmission scheme in the UE.
  • the non-codebook-based PUSCH (non-codebook-based PUSCH transmission, non-codebook-based transmission) may mean a PUSCH when "non-codebook" is set as a transmission scheme in the UE.
  • UL TCI state In NR, it is considered to use UL TCI state as a beam instruction method for UL.
  • the UL TCI state is similar to the notification of the DL beam (DL TCI state) of the UE.
  • the DL TCI state may be read as the TCI state for PDCCH / PDSCH.
  • the UL TCI state may be set in the UE by the spatial relationship information specified in a specific release (for example, spatialRelationInfo-r17 specified in Rel.17) (which may be referred to as UL TCI state information).
  • the UL TCI state may be referred to as a unified TCI state (unified TCI state), a spatial relationship, a spatial relationship of a specific release, or the like.
  • One or more of the set UL TCI states may be activated / deactivated using MAC CE. Further, from the set / activated UL TCI state, spatial relation information for at least one of A-SRS, PUSCH, PUCCH, and PRACH may be specified to the UE by DCI.
  • the channel / signal (which may be called the target channel / RS) for which the UL TCI state is set (designated) is, for example, a demodulation reference signal (DeModulation Reference Signal (DMRS)) for PUSCH, PUSCH, and PUCCH. It may be at least one such as DMRS for PUCCH, random access channel (Physical Random Access Channel (PRACH)), SRS and the like.
  • DMRS Demodulation Reference Signal
  • PRACH Physical Random Access Channel
  • SRS Physical Random Access Channel
  • the RS (reference RS) having a QCL relationship with the channel / signal may be, for example, DL RS (for example, SSB, CSI-RS, TRS, etc.) or UL RS (for example, SRS, beam management). For SRS, etc.).
  • DL RS for example, SSB, CSI-RS, TRS, etc.
  • UL RS for example, SRS, beam management
  • the RS having a QCL relationship with the channel / signal may be associated with a panel (panel ID) for receiving or transmitting the RS.
  • the association may be explicitly set (or specified) by higher layer signaling (eg, RRC signaling, MAC CE, etc.) or implicitly determined.
  • the correspondence relationship between the RS and the panel ID may be included in the UL TCI status information and set, or may be included in at least one of the resource setting information, the spatial relationship information, and the like of the RS.
  • the QCL type indicated by the UL TCI state may be an existing QCL type AD or another QCL type, and may have a predetermined spatial relationship, a related antenna port (port index), or the like. It may be included.
  • the UE may perform UL transmission using the panel corresponding to the panel ID.
  • the panel ID may be associated with the UL TCI state, and when the UE specifies (or activates) the UL TCI state for a given UL channel / signal, the UL channel according to the panel ID associated with the UL TCI state. / The panel used for signal transmission may be specified.
  • the present inventors have conceived a method for appropriately performing PUSCH transmission in consideration of the case where the UL TCI state is introduced.
  • a / B may mean "at least one of A and B”.
  • activate, deactivate, instruct (or indicate), select, configure, update, determine, etc. may be read interchangeably.
  • DMRS demodulation reference signal
  • predetermined antenna port group for example, DMRS port group
  • predetermined group for example, for example.
  • 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. may be read as each other.
  • the spatial relationship information Identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be read as each other.
  • the "spatial relation information” may be read as “a set of spatial relation information”, “one or more spatial relation information”, and the like.
  • the TCI state and TCI may be read interchangeably.
  • index, ID, indicator, and resource ID may be read as each other.
  • sequences, lists, sets, groups, groups, clusters, subsets, etc. may be read interchangeably.
  • spatial relation information (spatialRelationInfo), spatial relation information specified in a specific release (for example, spatialRelationInfo-r17 specified in Rel.17), TCI state specified in a specific release (eg, for example). TCIstate-r17) and the like specified in Rel.17 may be read as each other.
  • a spatial relationship information ID (spatialRelationInfoId), a spatial relationship information ID specified in a specific release (for example, spatialRelationInfoId-r17 specified in Rel.17), and a TCI specified in a specific release.
  • the state IDs (for example, TCIstateId-r17 defined by Rel.17) may be read as each other. The names of these parameters are not limited to these.
  • SRI spatial Relation Information
  • SRI spatial Relation Information for PUSCH
  • Spatial Relation UL Beam
  • UE Transmission Beam UE Transmission Beam
  • SRS TCI UL TCI
  • SRI SRS Resource Indicator
  • SRS resource SRS resource indicator
  • precoder precoder
  • the first embodiment relates to a codebook-based PUSCH when using the U-TCI framework.
  • the UE may determine (select) the UL TCI of the PUSCH based on some or all of the specific fields contained in the DCI.
  • the specific field is the existing Rel. It may be a new field not included in the 15 NR DCI format (eg, may be referred to as a UL beam field, UL TCI field, etc.) or an existing Rel. It may be a field included in the 15 NR DCI format (eg, SRI field, SRS request field, precoding information field, etc.).
  • the UE is based on the particular field contained in the DCI from one or more spatial relationship information (upper layer parameter "spatialRelationInfo") configured or activated by higher layer signaling (eg, RRC signaling, MAC signaling).
  • spatialRelationInfo e.g, RRC signaling, MAC signaling.
  • the UE may set the list of the above spatial relation information by RRC signaling.
  • the UE may activate one or more spatial relational information from the set spatial relational information list by MAC CE.
  • the value of the specific field included in the DCI is the spatial relationship information ID associated with the spatial relationship information (for example, the upper layer parameter "spatialRelationInfoId"), the entry number of the above list (for example, the spatial relationship information in which the above list is n). If the entry number is 0 to n-1, the index of the activated spatial relationship information (the first active spatial relationship information is index 0, the second active spatial relationship information is index 1, ... ) Etc. may be applicable to at least one.
  • the spatial relation information may include information about a reference reference signal (for example, SSB / CSI-RS / SRS).
  • the UE may transmit the PUSCH according to the spatial relationship with respect to the reference reference signal.
  • the DCI including the above specific field may not include the SRI field.
  • the above specific fields may be included in place of the SRI fields.
  • the UE may determine the TPMI (or precoder) and RI (or number of layers) based on the precoding information field.
  • the UE may select the precoder from the codebook for uplink.
  • the number of antenna ports for the codebook may be set in the UE by higher layer signaling (eg, the RRC information element "PUSCH-Config" for PUSCH configuration). Alternatively, it may be instructed to the UE by the DCI field (for example, the number of antenna ports field). Note that the code points in the number of antenna ports field may be mapped to 1, 2, 4, and other supported number of antenna ports.
  • the number of antenna ports for the codebook does not depend on the number of antenna ports for SRS resources (eg, given by the upper layer parameter "nrofSRS-Ports").
  • the number of antenna ports for the codebook may be notified to the UE by a higher layer parameter different from the higher layer parameter of the number of antenna ports for the SRS resource, or by a field of number of antenna ports.
  • the UE may select a precoder based on the above TPMI, the number of layers, etc. from the codebook for uplink for the set or specified number of antenna ports.
  • the UE may transmit the PUSCH by using the antenna ports of the set or specified number of antenna ports.
  • FIG. 1 is a diagram showing an example of the correspondence between the number of antenna port fields and the number of antenna ports in the first embodiment.
  • single ports number of ports 1
  • 2 ports number of ports 2
  • 4 ports number of ports 4
  • the correspondence may be defined in advance by specifications, may be set by higher layer signaling, may be specified by DCI, or may be determined based on UE capability.
  • the above antenna port number setting / specification may be applied only if any of the following conditions are met:
  • the spatial relationship information specified by the particular field described above includes information about the reference DL reference signal (eg, SSB / CSI-RS).
  • the spatial relationship information specified by the particular field described above includes information about the reference UL reference signal (eg, SRS).
  • the number of antenna ports is the number of antenna ports set for the reference UL reference signal (for example, in the SRS setting). It may be determined by the number of antenna ports for the SRS resource included in the RRC information element "SRS-Config" (in this case, the above setting / instruction of the number of antenna ports may not be applied).
  • the existing Rel When the spatial relationship information specified by the above-mentioned specific field includes information on the reference DL reference signal, the existing Rel.
  • a table of 15/16 may be referred to, or a table showing a new correspondence may be referred to.
  • the precoding information field may be used to indicate the TPMI and the number of layers.
  • the UE may 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 indicated by the antenna port number field).
  • the precoding information field is variable.
  • the precoding information field prefers a fixed size (if the DCI size changes dynamically, decoding is appropriate. Because it will be difficult to do).
  • the value of X may be predetermined by specifications, set by higher layer signaling, or determined based on UE capability.
  • FIG. 2 is a diagram showing an example of setting a transmission scheme for enabling the control of the first embodiment. This example is described using the Abstract Syntax Notation One (ASN.1) notation (note that this is just an example and may not be a complete description).
  • ASN.1 Abstract Syntax Notation One
  • the PUSCH setting information may include a new parameter (txConfig-r17) indicating the transmission scheme instead of the existing parameter (txConfig) indicating the transmission scheme.
  • the new parameter may take the value of a "new transmission scheme (newTxScheme)" in addition to the existing "codebook” and "nonCodebook”.
  • a UE for which a "new transmission scheme” is set as the new parameter may enable the control of the first embodiment (for example, the UE may refer to the spatial relationship information specified for the PUSCH. It may be expected to include CSI-RS / SSB as a reference signal in addition to or in place of SRS).
  • new transmission scheme (newTxScheme)
  • new transmission scheme (newTxScheme)
  • new transmission scheme for codebook (newTxSchemeForCodebook)" indicating a new transmission scheme for codebooks.
  • the UE can appropriately determine the UL TCI for the codebook-based PUSCH.
  • the first embodiment may be applied to non-codebook-based transmission.
  • the second embodiment relates to a non-codebook-based PUSCH when using the U-TCI framework.
  • the UE may determine (select) the UL TCI of the PUSCH based on a part or all of a specific field included in the DCI.
  • the specific field is the existing Rel. 15 It may be a new field not included in the NR DCI format (for example, it may be called UL beam field, UL TCI field, etc.), or it may be an existing Rel. 15 It may be a field included in the NR DCI format (for example, an SRI field, an SRS request field, a precoding information field, etc.).
  • the UE may not expect the DCI to include the new field (eg, UL TCI field).
  • the new field will be described as a UL TCI field.
  • the DCI including the above specific field may not include the SRI field.
  • the above specific fields may be included in place of the SRI fields.
  • DCI may be expected to include the UL TCI field.
  • the UE may interpret the UL TCI field as an existing SRI field.
  • This table 73.1.1.2-28/29/30/31 corresponds to the correspondence (table) between the SRI field and SRI for non-codebook-based PUSCH transmission.
  • FIG. 3 shows the table 7.3.1.1.2-29 described in TS 38.212 V16.2.0.
  • the value of L max may be set by the upper layer parameter "max MIMO-Layers" indicating the maximum number of MIMO (Multi Input Multi Output) layers, or may be given by the maximum number of layers of PUSCH supported by the UE. good.
  • the UE may consider that the Bit field mapped to index column in FIG. 3 indicates the value of the UL TCI field.
  • UEs with spatial relational information specified in a particular release eg, spatialRelationInfo-r17
  • the DCI for scheduling PUSCH to include UL TCI fields. May be good.
  • the UE may assume that the code points of the UL TCI field are mapped to one or more spatial relationship information set / activated for PUSCH.
  • Each spatial relationship information may include an SRS as a reference reference signal.
  • the UE may be determined as at least one UL TCI of the set / activated spatial relationship information based on the value of the UL TCI field.
  • Each spatial relationship information may include an SRS as a reference reference signal.
  • N SpatialRelationInfo 2, 3, and 4 may correspond to each of the two columns from the left in each figure.
  • N SpatialRelationInfo may mean the number of spatially related information set / activated (for non-codebook-based transmission).
  • UL TCI may be determined based on the set CSI-RS (measurement).
  • the SRI field may be 0 bits.
  • the UE may determine the UL TCI (or precoder) based on the measurement of CSI-RS (associated CSI-RS) associated with the SRS (eg, A-SRS) specified by the SRS request field. good.
  • the UE can appropriately determine the UL TCI for the non-codebook-based PUSCH.
  • a third embodiment relates to a codebook-based / non-codebook-based PUSCH.
  • the spatial relationship of DMRS (PUSCH DMRS) for PUSCH may be set according to the TCI state.
  • the UL beam (spatial domain filter) for the codebook-based / non-codebook-based PUSCH will be a QCL type D for that TCI state. It may be determined by the same spatial domain filter used to receive (QCL-D).
  • the UE may say that the spatial domain filter for the PUSCH is used to receive a QCL-D reference RS (eg, SSB / CSI-RS) in the TCI state configured / activated for that PUSCH. It may be determined that they are the same spatial domain filter.
  • one TCI by DCI (eg, a particular field of the DCI (described in the first and second embodiments)).
  • the state may be specified.
  • the UL beam (spatial domain filter) for the codebook-based / non-codebook-based PUSCH is determined by the same spatial domain filter used to receive the QCL type D (QCL-D) in the specified TCI state. You may.
  • the DCI that schedules the PUSCH may be variable depending on the number of TCI states that are set / activated.
  • the TCI state (TCI state ID) of the third embodiment may mean a DL TCI state (DL TCI state ID).
  • DL TCI state ID DL TCI state ID
  • 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.
  • the UE can appropriately determine the spatial domain filter of the PUSCH based on the TCI state.
  • At least one of the above embodiments may be applied only to UEs that report or support a particular UE capability.
  • the UE is set with specific information related to the above-mentioned embodiment by higher layer signaling (if not set, for example, Rel.15 /. Apply 16 actions).
  • the specific information includes information indicating that UL TCI is enabled (for example, spatialRelation-r17), information indicating that U-TCI is enabled, and SSB / CSI-RS as a reference reference signal. It may be information indicating that spatial relational information is enabled for, information indicating the new transmission scheme described above, arbitrary RRC parameters for a particular release (eg, Rel.17), and the like.
  • the reference reference signals of the spatial relationship information (TCI state, UL TCI state) set / activated in the UE are all DL-RS (for example, SSB / CSI-RS) (for example). In other words, it may be applied when the spatial relation information whose reference reference signal is SRS is not set / activated).
  • wireless communication system Wireless communication system
  • communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.
  • FIG. 6 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
  • the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..
  • the wireless communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs).
  • MR-DC is a dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and a dual connectivity (NR-E) between NR and LTE.
  • E-UTRA-NR Dual Connectivity Evolved Universal Terrestrial Radio Access (E-UTRA)
  • NR-E dual connectivity
  • NE-DC -UTRA Dual Connectivity
  • the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
  • the base station (gNB) of NR is MN
  • the base station (eNB) of LTE (E-UTRA) is SN.
  • the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.
  • a plurality of base stations in the same RAT for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )
  • NR-NR Dual Connectivity NR-DC
  • gNB NR base stations
  • the wireless communication system 1 includes a base station 11 that forms a macrocell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macrocell C1 and forms a small cell C2 that is narrower than the macrocell C1. You may prepare.
  • the user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure.
  • the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.
  • the user terminal 20 may be connected to at least one of a plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).
  • CA Carrier Aggregation
  • DC dual connectivity
  • CC Component Carrier
  • Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
  • the macrocell C1 may be included in FR1 and the small cell C2 may be included in FR2.
  • FR1 may be in a frequency band of 6 GHz or less (sub 6 GHz (sub-6 GHz)), and FR 2 may be in a frequency band higher than 24 GHz (above-24 GHz).
  • the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.
  • the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the plurality of base stations 10 may be connected by wire (for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
  • wire for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.
  • NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.
  • IAB Integrated Access Backhaul
  • relay station relay station
  • the base station 10 may be connected to the core network 30 via another base station 10 or directly.
  • the core network 30 may include at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.
  • a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
  • OFDM Orthogonal Frequency Division Multiplexing
  • DL Downlink
  • UL Uplink
  • CP-OFDM Cyclic Prefix OFDM
  • DFT-s-OFDM Discrete Fourier Transform Spread OFDM
  • OFDMA Orthogonal Frequency Division Multiple. Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the wireless access method may be called a waveform.
  • another wireless access system for example, another single carrier transmission system, another multi-carrier transmission system
  • the UL and DL wireless access systems may be used as the UL and DL wireless access systems.
  • a downlink shared channel Physical Downlink Shared Channel (PDSCH)
  • a broadcast channel Physical Broadcast Channel (PBCH)
  • a downlink control channel Physical Downlink Control
  • PDSCH Physical Downlink Control
  • the uplink shared channel Physical Uplink Shared Channel (PUSCH)
  • the uplink control channel Physical Uplink Control Channel (PUCCH)
  • the random access channel shared by each user terminal 20 are used.
  • Physical Random Access Channel (PRACH) Physical Random Access Channel or the like may be used.
  • User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH.
  • User data, upper layer control information, and the like may be transmitted by the PUSCH.
  • the Master Information Block (MIB) may be transmitted by the PBCH.
  • Lower layer control information may be transmitted by 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 PDSCH and PUSCH.
  • DCI Downlink Control Information
  • the DCI that schedules PDSCH may be called DL assignment, DL DCI, or the like, and the DCI that schedules PUSCH may be called UL grant, UL DCI, or the like.
  • the PDSCH may be read as DL data, and the PUSCH may be read as UL data.
  • a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates).
  • One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.
  • One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
  • One or more search spaces may be referred to as a search space set.
  • the "search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. of the present disclosure may be read as each other.
  • channel state information (Channel State Information (CSI)
  • delivery confirmation information for example, it may be called Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.
  • scheduling request for example.
  • Uplink Control Information (UCI) including at least one of SR) may be transmitted.
  • the PRACH may transmit a random access preamble to establish a connection with the cell.
  • downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" to the beginning of various channels.
  • a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted.
  • the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a demodulation reference signal (DeModulation).
  • CRS Cell-specific Reference Signal
  • CSI-RS Channel State Information Reference Signal
  • DeModulation Demodulation reference signal
  • Reference Signal (DMRS)), positioning reference signal (Positioning Reference Signal (PRS)), phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted.
  • PRS Positioning Reference Signal
  • PTRS Phase Tracking Reference Signal
  • the synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • the signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like.
  • SS, SSB and the like may also be called a reference signal.
  • a measurement reference signal Sounding Reference Signal (SRS)
  • a demodulation reference signal DMRS
  • UL-RS Uplink Reference Signal
  • UE-specific Reference Signal UE-specific Reference Signal
  • FIG. 7 is a diagram showing an example of the configuration of the base station according to the embodiment.
  • the base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140.
  • the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.
  • the functional block of the characteristic portion in the present embodiment is mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
  • 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 described based on the common recognition in the technical field according to the present disclosure.
  • the control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like.
  • the control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
  • the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120.
  • the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, status management of the base station 10, management of radio resources, and the like.
  • the transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123.
  • the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
  • the transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure. be able to.
  • the transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
  • the transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122.
  • the receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.
  • the transmitting / receiving antenna 130 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
  • the transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission / reception unit 120 processes, for example, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • HARQ retransmission control HARQ retransmission control
  • the transmission / reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted. Processing (if necessary), inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-analog transformation may be performed, and the baseband signal may be output.
  • channel coding may include error correction coding
  • modulation modulation
  • mapping mapping, filtering
  • DFT discrete Fourier Transform
  • IFFT inverse Fast Fourier Transform
  • precoding coding
  • transmission processing such as digital-analog transformation
  • the transmission / reception unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..
  • the transmission / reception unit 120 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 130.
  • the transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) for the acquired baseband signal. )) Processing (if necessary), filtering, decoding, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.
  • FFT fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • the transmission / reception unit 120 may perform measurement on the received signal.
  • the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal.
  • the measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
  • RSRP Reference Signal Received Power
  • RSSQ Reference Signal Received Quality
  • SINR Signal to Noise Ratio
  • Signal strength for example, Received Signal Strength Indicator (RSSI)
  • propagation path information for example, CSI
  • the measurement result may be output to the control unit 110.
  • the transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10, etc., and user data (user plane data) for the user terminal 20 and a control plane. Data or the like may be acquired or transmitted.
  • the transmission unit and the reception unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
  • the transmission / reception unit 120 provides the user with downlink control information (Downlink Control Information (DCI)) including a specific field used for determining the uplink transmission setting instruction state (Uplink Transmission Configuration Indication state (UL TCI state)). It may be transmitted to the terminal 20.
  • DCI Downlink Control Information
  • UL TCI state Uplink Transmission Configuration Indication state
  • the transmission / reception unit 120 may receive a codebook-based / non-codebook-based uplink shared channel (PUSCH) transmitted by the user terminal 20 by applying a precoder determined based on the UL TCI state. ..
  • PUSCH codebook-based / non-codebook-based uplink shared channel
  • FIG. 8 is a diagram showing an example of the configuration of the user terminal according to the embodiment.
  • the user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230.
  • the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.
  • the functional block of the feature portion in the present embodiment is mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.
  • 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 described based on the common recognition in the technical field according to the present disclosure.
  • the control unit 210 may control signal generation, mapping, and the like.
  • the control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230.
  • the control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.
  • the transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223.
  • the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
  • the transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.
  • the transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
  • the transmission unit may be composed of a transmission processing unit 2211 and an RF unit 222.
  • the receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.
  • the transmitting / receiving antenna 230 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
  • the transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission / reception unit 220 processes, for example, PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.
  • the transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed, and the baseband signal may be output.
  • Whether or not to apply the DFT process may be based on the transform precoding setting.
  • the transmission / reception unit 220 transmits the channel using the DFT-s-OFDM waveform.
  • the DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.
  • the transmission / reception unit 220 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..
  • the transmission / reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.
  • the transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
  • the transmission / reception unit 220 may perform measurement on the received signal.
  • the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal.
  • the measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
  • the measurement result may be output to the control unit 210.
  • the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmission / reception unit 220 and the transmission / reception antenna 230.
  • the control unit 210 determines the uplink transmission setting instruction state (Uplink Transmission Configuration Indication state (UL TCI state)) based on the specific field included in the downlink control information (Downlink Control Information (DCI)). You may.
  • UL TCI state Uplink Transmission Configuration Indication state
  • DCI Downlink Control Information
  • the DCI may be in DCI format (eg, DCI format 0_0, 0_1, 0_2, etc.) for scheduling PUSCH.
  • the DCI may not include a reference signal for measurement (Sounding Reference Signal (SRS)) resource indicator (SRS Resource Indicator (SRI)) field.
  • SRS Sounding Reference Signal
  • SRI SRS Resource Indicator
  • the specific field is the existing Rel. 15 It may be a new field not included in the NR DCI format (for example, it may be called UL beam field, UL TCI field, etc.), or it may be an existing Rel. 15 It may be a field included in the NR DCI format (for example, an SRI field, an SRS request field, a precoding information field, etc.).
  • the transmission / reception unit 220 may transmit a codebook-based uplink shared channel by applying a precoder determined based on the UL TCI state.
  • the precoder is the number of antenna ports given by a higher layer parameter different from the higher layer parameter of the number of antenna ports for the Sounding Reference Signal (SRS) resource, or the antenna port indicated by the DCI field. It may be determined from the codebook on numbers.
  • SRS Sounding Reference Signal
  • the control unit 210 assumes that the precoding information and the number of layers field of the DCI have a fixed size regardless of the number of antenna ports shown. good.
  • the transmission / reception unit 220 may transmit a non-codebook-based uplink shared channel by applying a precoder determined based on the UL TCI state.
  • the code point of the specific field is a measurement reference signal (Sounding Reference Signal (SRS)) resource indicator (SRS Resource Indicator (SRI)) for non-codebook-based uplink shared channel transmission.
  • SRS Sounding Reference Signal
  • SRI SRS Resource Indicator
  • the UL TCI may be determined (eg, the UL TCI for the one or more SRS resources may be used as the UL TCI).
  • the control unit 210 determines that the code point of the particular field is mapped to one or more spatial relationship information configured or activated for the uplink shared channel and is designated by the value of the particular field.
  • the UL TCI may be determined based on at least one piece of the space-related information (for example, it may be determined that the space-related information is the UL TCI).
  • each functional block is realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (configuration unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
  • the realization method is not particularly limited.
  • the base station, user terminal, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
  • the base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. ..
  • the hardware configuration 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 not to include some of the devices.
  • processor 1001 may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors.
  • the processor 1001 may be mounted by one or more chips.
  • the processor 1001 For each function in the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
  • predetermined software program
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • control unit 110 210
  • transmission / reception unit 120 220
  • the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • the control unit 110 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
  • the memory 1002 is a computer-readable recording medium, for example, at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one.
  • the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, and is, for example, a flexible disk, a floppy disk (registered trademark) disk, an optical magnetic disk (for example, a compact disc (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, etc.). At least one of Blu-ray® discs), removable discs, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers and other suitable storage media. May be configured by.
  • the storage 1003 may be referred to as an auxiliary storage device.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 has, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). May be configured to include.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004.
  • the transmission / reception unit 120 (220) may be physically or logically separated by the transmission unit 120a (220a) and the reception unit 120b (220b).
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings.
  • channels, symbols and signals may be read interchangeably.
  • the signal may be a message.
  • the reference signal may be abbreviated as RS, and may be referred to as a pilot, a pilot signal, or the like depending on the applied standard.
  • the component carrier CC may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
  • the wireless frame may be configured by one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
  • the subframe may be composed of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel.
  • Numerology is, for example, subcarrier interval (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, wireless frame configuration.
  • SCS subcarrier Spacing
  • TTI Transmission Time Interval
  • a specific filtering process performed by the transmitter / receiver in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols in the time domain (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). Further, the slot may be a time unit based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may be composed of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. The minislot may consist of a smaller number of symbols than the slot.
  • the PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
  • the time units such as frames, subframes, slots, mini-slots, and symbols in the present disclosure may be read as each other.
  • one subframe may be called TTI
  • a plurality of consecutive subframes may be called TTI
  • one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • TTI shorter than normal TTI may be referred to as shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot and the like.
  • the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI eg, shortened TTI, etc.
  • TTI having the above TTI length may be read as TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • one or more RBs are 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, and an RB. It may be called a pair or the like.
  • PRB Physical RB
  • SCG sub-carrier Group
  • REG resource element group
  • PRB pair an RB. It may be called a pair or the like.
  • the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
  • BWP UL BWP
  • BWP for DL DL BWP
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active and the UE may not expect to send or receive a given channel / signal outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini-slots, and symbols are merely examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
  • the number of subcarriers, the number of symbols in TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be indicated by a given index.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers.
  • Information, signals, etc. may be input / output via a plurality of network nodes.
  • Input / output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
  • the notification of information is not limited to the embodiment / embodiment described in the present disclosure, and may be performed by using another method.
  • the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or combinations thereof. May be carried out by.
  • DCI downlink control information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like.
  • the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).
  • CE MAC Control Element
  • the notification of predetermined information is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).
  • the determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website where software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the terms “system” and “network” used in this disclosure may be used interchangeably.
  • the “network” may mean a device (eg, a base station) included in the network.
  • precoding "precoding weight”
  • QCL Quality of Co-Co-Location
  • TCI state Transmission Configuration Indication state
  • space "Spatial relation”, “spatial domain filter”, “transmission power”, “phase rotation”, "antenna port”, “antenna port group”, “layer”, “number of layers”
  • Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, "antenna”, “antenna element", “panel” are compatible.
  • base station BS
  • wireless base station fixed station
  • NodeB NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission point (Transmission Point (TP))
  • Reception point Reception Point
  • TRP Transmission / Reception Point
  • Panel , "Cell”, “sector”, “cell group”, “carrier”, “component carrier” and the like
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (eg, 3) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio). Communication services can also be provided by Head (RRH))).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a portion or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the user terminal 20 may have the function of the base station 10 described above.
  • the words such as "up” and “down” may be read as words corresponding to the communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the user terminal in the present disclosure may be read as a base station.
  • the base station 10 may have the functions of the user terminal 20 described above.
  • the operation performed by the base station may be performed by its upper node (upper node) in some cases.
  • various operations performed for communication with a terminal are a base station, one or more network nodes other than the base station (for example,).
  • Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.
  • Each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched and used according to the execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • xG xG (xG (x is, for example, an integer or a fraction)
  • Future Radio Access FAA
  • RAT New -Radio Access Technology
  • NR New Radio
  • NX New radio access
  • FX Future generation radio access
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • UMB Ultra Mobile Broadband
  • LTE 802.11 Wi-Fi®
  • LTE 802.16 WiMAX®
  • LTE 802.20 Ultra-WideBand (UWB), Bluetooth®, and other suitable radios.
  • UMB Ultra Mobile Broadband
  • references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.
  • determining used in this disclosure may include a wide variety of actions.
  • judgment (decision) means judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry) ( For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment”.
  • judgment (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as “determining” such as accessing) (for example, accessing data in memory).
  • judgment (decision) is regarded as “judgment (decision)” of solving, selecting, selecting, establishing, comparing, and the like. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
  • connection are any direct or indirect connections or connections between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “bonded” to each other.
  • the connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
  • the radio frequency domain microwaves. It can be considered to be “connected” or “coupled” to each other using frequency, electromagnetic energy having wavelengths in the region, light (both visible and invisible) regions, and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Terminal selon un mode de réalisation de la présente divulgation, comprenant : une unité de commande qui détermine un état d'indication de configuration de transmission de liaison montante (état UL TCI) sur la base d'un champ spécifique inclus dans des informations de commande de liaison descendante (DCI) ; et une unité de transmission qui utilise un précodeur déterminé sur la base de l'état UL TCI pour transmettre un canal physique partagé de liaison montante basé sur un livre de codes. Le mode de réalisation de la présente divulgation permet de commander de manière appropriée une transmission PUSCH.
PCT/JP2020/030041 2020-08-05 2020-08-05 Terminal, procédé de communication sans fil, et station de base WO2022029933A1 (fr)

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