WO2023013023A1 - Terminal, procédé de communication sans fil et station de base - Google Patents

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

Info

Publication number
WO2023013023A1
WO2023013023A1 PCT/JP2021/029282 JP2021029282W WO2023013023A1 WO 2023013023 A1 WO2023013023 A1 WO 2023013023A1 JP 2021029282 W JP2021029282 W JP 2021029282W WO 2023013023 A1 WO2023013023 A1 WO 2023013023A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
precoding
transmission
frequency
srs
Prior art date
Application number
PCT/JP2021/029282
Other languages
English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ジン ワン
ラン チン
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to CN202180101433.4A priority Critical patent/CN117837095A/zh
Priority to PCT/JP2021/029282 priority patent/WO2023013023A1/fr
Publication of WO2023013023A1 publication Critical patent/WO2023013023A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting

Definitions

  • the present disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.
  • LTE Long Term Evolution
  • 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).
  • LTE successor systems for example, 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later
  • 5G 5th generation mobile communication system
  • 5G+ 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • NR New Radio
  • precoding frequency selective precoding
  • frequency selective precoding control in the frequency direction of UL transmission
  • the details of this operation have not been sufficiently studied. For example, when frequency selective precoding is performed, sufficient consideration has not been given as to what conditions/rules/parameters should be used to control precoding. If precoding is not properly applied, throughput may decrease or communication quality may deteriorate.
  • one object of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control precoding even when precoding is selectively performed in the frequency direction.
  • a terminal includes a receiving unit that receives at least one of first information about precoding in the frequency direction for a physical uplink shared channel and second information about a transmission precoding matrix index, and a control unit that controls precoding applied to the physical uplink shared channel based on at least one of the first information and the second information.
  • precoding can be appropriately controlled even when precoding is selectively performed in the frequency direction.
  • FIG. 1 is a diagram showing an example of the correspondence relationship between precoding information and bit values of the number-of-layers field included in DCI and TPMI/layer.
  • 2A-2D are diagrams illustrating an example of association between precoder types and TPMI indexes.
  • 3A and 3B are diagrams showing an example of frequency selective precoding in the first embodiment.
  • FIG. 4 is a diagram illustrating an example of correspondence between bandwidth sizes and RBG sizes (for example, reference values) in the first embodiment.
  • FIG. 5 is a diagram showing another example of frequency selective precoding in the first embodiment.
  • FIG. 6 is a diagram showing an example of the correspondence relationship between bit values of predetermined fields of DCI and TPMI when frequency selective precoding is applied in the third embodiment.
  • FIG. 7 is a diagram illustrating an example of a schematic configuration of a radio communication system according to an embodiment.
  • FIG. 8 is a diagram illustrating an example of the configuration of a base station according to one embodiment.
  • FIG. 9 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment.
  • FIG. 10 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to one embodiment.
  • repeat transmission is supported in data transmission.
  • the base station network (NW), gNB) may repeat transmission of DL data (for example, downlink shared channel (PDSCH)) a predetermined number of times.
  • the UE may repeat the UL data (eg, uplink shared channel (PUSCH)) a predetermined number of times.
  • DL data for example, downlink shared channel (PDSCH)
  • PUSCH uplink shared channel
  • a UE may be scheduled for a predetermined number of repeated PUSCH transmissions with a single DCI.
  • the number of iterations is also called a repetition factor K or an aggregation factor K.
  • the n-th repetition is also called the n-th transmission occasion, etc., and may be identified by a repetition index k (0 ⁇ k ⁇ K-1).
  • Repeated transmission may be applied to dynamically scheduled PUSCH in DCI (eg, dynamic grant-based PUSCH) or to configured grant-based PUSCH.
  • the UE semi-statically receives information indicating the repetition factor K (eg, aggregationFactorUL or aggregationFactorDL) via higher layer signaling.
  • the higher layer signaling may be, for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination thereof.
  • MAC CE Control Element
  • MAC PDU Protocol Data Unit
  • the broadcast information may be, for example, a master information block (MIB), a system information block (SIB), or a minimum system information (RMSI: Remaining Minimum System Information).
  • MIB master information block
  • SIB system information block
  • RMSI Minimum System Information
  • PDSCH reception processing for example, reception, demapping, demodulation, decoding at least one
  • control the PUSCH transmission process e.g., transmission, mapping, modulation, and/or coding
  • allocation of time domain resources e.g.
  • RB resource blocks
  • RBG resource block groups
  • MCS Modulation and Coding Scheme
  • DMRS Demodulation Reference Signal
  • TCI transmission configuration indication
  • the same symbol allocation may be applied between consecutive K slots.
  • UE based on the start symbol S and the number of symbols L (eg, Start and Length Indicator (SLIV)) determined based on the value m of a predetermined field (eg, Time Domain Resource Allocation (TDRA) field) in the DCI
  • L Start and Length Indicator
  • TDRA Time Domain Resource Allocation
  • a symbol allocation in each slot may be determined.
  • the UE may determine the first slot based on K2 information determined based on the value m of a predetermined field (eg, TDRA field) of DCI.
  • the redundancy version (Redundancy Version (RV)) applied to the TB based on the same data may be the same, or may be at least partially different.
  • the RV applied to that TB at the nth slot may be determined based on the value of a predetermined field (eg, RV field) in the DCI.
  • the PUSCH may be repeatedly transmitted over multiple slots (per slot).
  • the UE may dynamically receive information indicating the repetition factor K (for example, numberofrepetitions) using downlink control information.
  • a repetition factor may be determined based on the value m of a predetermined field (eg, the TDRA field) within the DCI. For example, a table that defines the correspondence between bit values notified by DCI, repetition coefficient K, start symbol S, and number of symbols L may be supported.
  • a slot-based repetition transmission may be called repetition transmission type A (eg, PUSCH repetition Type A), and a subslot-based repetition transmission may be called repetition transmission type B (eg, PUSCH repetition Type B).
  • repetition transmission type A eg, PUSCH repetition Type A
  • repetition transmission type B eg, PUSCH repetition Type B
  • the UE may be configured to apply at least one of repeat transmission type A and repeat transmission type B.
  • the repeat transmission type applied by the UE may be notified from the base station to the UE through higher layer signaling (eg, PUSCHRepTypeIndicator).
  • Either repeat transmission type A or repeat transmission type B may be configured in the UE for each DCI format that schedules PUSCH.
  • a first DCI format e.g., DCI format 0_1
  • higher layer signaling e.g., PUSCHRepTypeIndicator-AorDCIFormat0_1
  • PUSCH-RepTypeB repeat transmission type B
  • the UE receives the first DCI Apply repeat transmission type B for PUSCH repeat transmissions scheduled in the format. Otherwise (e.g., if PUSCH-RepTypeB is not configured or if PUSCH-RepTypA is configured), the UE applies repeat transmission type A for PUSCH repeat transmissions scheduled in the first DCI format. do.
  • PUSCH precoder In NR, it is considered that the UE supports Codebook (CB) and/or Non-Codebook (NCB) based transmission.
  • CB Codebook
  • NCB Non-Codebook
  • the UE uses at least a measurement reference signal (SRS) resource indicator (SRS Resource Indicator (SRI)), at least one of the CB-based and NCB-based physical uplink shared channel (PUSCH )) to determine the precoder (precoding matrix) for transmission.
  • SRS measurement reference signal
  • SRI SRS Resource Indicator
  • PUSCH physical uplink shared channel
  • the UE determines the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI), Transmitted Precoding Matrix Indicator (TPMI), etc. You may The UE may determine the precoder for PUSCH transmission based on the SRI for NCB-based transmission.
  • SRI Transmitted Rank Indicator
  • TRI Transmitted Rank Indicator
  • TPMI Transmitted Precoding Matrix Indicator
  • SRI, TRI, TPMI, etc. may be notified to the UE using downlink control information (DCI).
  • DCI downlink control information
  • the SRI may be specified by the SRS Resource Indicator field (SRI field) of the DCI, or specified by the parameter "srs-ResourceIndicator” included in the RRC information element "Configured GrantConfig" of the configured grant PUSCH.
  • SRI field SRS Resource Indicator field
  • SR SRI field
  • the UE may report UE capability information regarding the precoder type, and the base station may configure the precoder type based on the UE capability information through higher layer signaling.
  • the UE capability information may be precoder type information (which may be represented by the RRC parameter “pusch-TransCoherence”) that the UE uses in PUSCH transmission.
  • higher layer signaling may be, for example, 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 may be, for example, a master information block (MIB), a system information block (SIB), or the like.
  • the UE is based on the precoder type information (which may be represented by the RRC parameter "codebookSubset") included in the PUSCH configuration information ("PUSCH-Config" information element of RRC signaling) notified by higher layer signaling, A precoder to be used for PUSCH transmission may be determined.
  • the UE may be configured with the subset of PMI specified by TPMI by codebookSubset.
  • the precoder type is either full coherent, fully coherent, coherent, partial coherent, non coherent, or a combination of at least two of these (for example, “complete and fullyAndPartialAndNonCoherent”, “partialAndNonCoherent”, etc.).
  • Perfect coherence means that all antenna ports used for transmission are synchronized (phase can be adjusted, phase can be controlled for each coherent antenna port, precoder can be applied appropriately for each coherent antenna port, etc.) may be expressed as). Partial coherence may mean that some of the antenna ports used for transmission are synchronized, but some of the antenna ports are not synchronized with other ports. Non-coherent may mean that each antenna port used for transmission is not synchronized.
  • a UE that supports fully coherent precoder types may be assumed to support partially coherent and non-coherent precoder types.
  • a UE that supports a partially coherent precoder type may be assumed to support a non-coherent precoder type.
  • the precoder type may be read as coherency, PUSCH transmission coherence, coherence type, coherence type, codebook type, codebook subset, codebook subset type, or the like.
  • the UE derives from DCI (e.g., DCI format 0_1/0_2, and so on) to schedule UL transmissions from multiple precoders (which may be referred to as precoding matrices, codebooks, etc.) for CB-based transmissions.
  • DCI e.g., DCI format 0_1/0_2, and so on
  • precoding matrices codebooks, etc.
  • a precoding matrix corresponding to the TPMI index may be determined.
  • the number of bits for the precoding information and the number of layers field included in DCI may be determined based on the number of antenna ports, the setting of predetermined upper layer parameters, the presence or absence of transform precoder setting, and the like.
  • FIG. 1 is a diagram showing an example of precoding information and layer number fields included in DCI.
  • FIG. 1 shows a case where the precoding information and layer number fields consist of 4, 5 or 6 bits for 4 antenna ports.
  • a predetermined number of layers/TPMI is specified by the bit value (or code point) of the precoding information and the number of layers field.
  • FIG. 2A is a table of precoding matrix W for single layer (rank 1) transmission with 4 antenna ports in DFT-s-OFDM (Discrete Fourier Transform spread OFDM, transform precoding is disabled) correspond to
  • the UE is notified of any TPMI from 0 to 27 for single layer transmission. Also, if the precoder type is partialAndNonCoherent, the UE is configured with any TPMI from 0 to 11 for single layer transmission. If the precoder type is nonCoherent, the UE is set to any TPMI from 0 to 3 for single layer transmission.
  • a precoding matrix in which only one component in each column is not 0 may be called a noncoherent codebook.
  • a precoding matrix in which a predetermined number (but not all) of the entries in each column are non-zero may be referred to as a partially coherent codebook.
  • a precoding matrix whose elements in each column are not all zeros may be called a fully coherent codebook.
  • Non-coherent codebooks and partially coherent codebooks may be called antenna selection precoders.
  • a fully coherent codebook may be referred to as a non-antenna selection precoder.
  • RRC parameter “codebookSubset” “partialAndNonCoherent”.
  • FIG. 2B corresponds to a table of precoding matrices W for 2-layer (rank 2) transmission using 4 antenna ports with transform precoding disabled.
  • FIG. 2C corresponds to a table of precoding matrices W for 3-layer (rank 3) transmission with 4 antenna ports with transform precoding disabled.
  • FIG. 2D corresponds to a table of precoding matrices W for 3-layer (rank 3) transmission using 4 antenna ports with transform precoding disabled.
  • the UE receives information (SRS configuration information, for example, parameters in "SRS-Config" of the RRC control element) used for transmission of measurement reference signals (for example, Sounding Reference Signal (SRS)))
  • SRS configuration information for example, parameters in "SRS-Config" of the RRC control element
  • SRS Sounding Reference Signal
  • the UE receives information on one or more SRS resource sets (SRS resource set information, e.g., "SRS-ResourceSet” of the RRC control element) and information on one or more SRS resources (SRS resource information, eg, "SRS-Resource” of the RRC control element).
  • SRS resource set information e.g., "SRS-ResourceSet” of the RRC control element
  • SRS resource information e.g. "SRS-Resource” of the RRC control element
  • One SRS resource set may be associated with a predetermined number of SRS resources (a predetermined number of SRS resources may be grouped together).
  • Each SRS resource may be identified by an SRS resource indicator (SRI) or an SRS resource ID (Identifier).
  • the SRS resource set information may include an SRS resource set ID (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, an SRS resource type, and SRS usage information.
  • SRS-ResourceSetId SRS resource set ID
  • SRS-ResourceId SRS resource set ID
  • SRS resource type SRS resource type
  • SRS usage information SRS usage information
  • the SRS resource types are periodic SRS (P-SRS), semi-persistent SRS (SP-SRS), aperiodic SRS (A-SRS, AP -SRS)).
  • P-SRS periodic SRS
  • SP-SRS semi-persistent SRS
  • A-SRS aperiodic SRS
  • AP -SRS aperiodic SRS
  • the UE may transmit P-SRS and SP-SRS periodically (or periodically after activation) and transmit A-SRS based on DCI's SRS request.
  • the usage is, for example, beam management (beamManagement), codebook-based transmission (codebook: CB), non-codebook-based transmission (nonCodebook: NCB), antenna switching, and the like.
  • the SRS for codebook-based or non-codebook-based transmission applications may be used to determine the precoder for codebook-based or non-codebook-based PUSCH transmission based on SRI.
  • the UE determines the precoder for PUSCH transmission based on SRI, Transmitted Rank Indicator (TRI) and Transmitted Precoding Matrix Indicator (TPMI). You may The UE may determine the precoder for PUSCH transmission based on the SRI for non-codebook-based transmission.
  • TRI Transmitted Rank Indicator
  • TPMI Transmitted Precoding Matrix Indicator
  • SRS resource information includes SRS resource ID (SRS-ResourceId), SRS port number, SRS port number, transmission Comb, SRS resource mapping (eg, time and/or frequency resource position, resource offset, resource period, repetition number, SRS number of symbols, SRS bandwidth, etc.), hopping related information, SRS resource type, sequence ID, spatial relationship information of SRS, and so on.
  • the spatial relationship information of the SRS may indicate spatial relationship information between a given reference signal and the SRS.
  • the predetermined reference signal includes a Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block, a Channel State Information Reference Signal (CSI-RS) and an SRS (for example, another SRS) may be at least one of An SS/PBCH block may be referred to as a Synchronization Signal Block (SSB).
  • SS/PBCH Synchronization Signal/Physical Broadcast Channel
  • CSI-RS Channel State Information Reference Signal
  • SRS for example, another SRS
  • SSB Synchronization Signal Block
  • the SRS spatial relationship information may include at least one of the SSB index, CSI-RS resource ID, and SRS resource ID as the index of the predetermined reference signal.
  • the SSB index, SSB resource ID and SSBRI may be read interchangeably.
  • the CSI-RS index, CSI-RS resource ID and CRI may be read interchangeably.
  • the SRS index, the SRS resource ID, and the SRI may be read interchangeably.
  • the spatial relationship information of the SRS may include the serving cell index, BWP index (BWP ID), etc. corresponding to the predetermined reference signal.
  • BC is, for example, a node (e.g., base station or UE) determines the beam (transmission beam, Tx beam) used for signal transmission based on the beam (reception beam, Rx beam) used for signal reception. It may be the ability to
  • BC is Tx/Rx beam correspondence, beam reciprocity, beam calibration, calibrated/non-calibrated, reciprocity calibration It may also be called reciprocity calibrated/non-calibrated, degree of correspondence, degree of agreement, and the like.
  • the UE uses the same beam (spatial domain transmit filter) as the SRS (or SRS resources) indicated by the base station based on the measurement results of one or more SRS (or SRS resources) , may transmit uplink signals (eg, PUSCH, PUCCH, SRS, etc.).
  • uplink signals eg, PUSCH, PUCCH, SRS, etc.
  • the UE uses the same or corresponding beam (spatial domain transmit filter) as the beam (spatial domain receive filter) used for receiving a given SSB or CSI-RS (or CSI-RS resource) may transmit uplink signals (for example, PUSCH, PUCCH, SRS, etc.).
  • the beam spatial domain receive filter
  • uplink signals for example, PUSCH, PUCCH, SRS, etc.
  • the spatial domain for reception of the SSB or CSI-RS may be transmitted using the same spatial domain filter (spatial domain transmit filter) as the filter (spatial domain receive filter).
  • the UE may assume that the UE receive beam for SSB or CSI-RS and the UE transmit beam for SRS are the same.
  • target SRS For a given SRS (target SRS) resource, if the UE is configured with spatial relationship information about another SRS (reference SRS) and the given SRS (target SRS) (for example, without BC), the given reference SRS
  • the target SRS resources may be transmitted using the same spatial domain filter (spatial domain transmit filter) as for the transmission of . 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 PUSCHs scheduled by the DCI based on the value of a predetermined field (eg, SRS resource identifier (SRI) field) within the DCI (eg, DCI format 0_1). Specifically, the UE may use the spatial relationship information (eg, “spatialRelationInfo” of the RRC information element) of the SRS resource determined based on the value of the predetermined field (eg, SRI) for PUSCH transmission.
  • a predetermined field eg, SRS resource identifier (SRI) field
  • SRI spatialRelationInfo
  • the UE when using codebook-based transmission, the UE may be configured with two SRS resources by RRC and indicated one of the two SRS resources by DCI (a 1-bit predetermined field).
  • the UE when using non-codebook based transmission, the UE may be configured with 4 SRS resources by RRC and one of the 4 SRS resources may be indicated by DCI (a 2-bit predefined field).
  • DCI Downlink Control Channel
  • DL-RS can be configured for the spatial relationship of SRS resources used for PUSCH.
  • the UE can be configured by RRC for the spatial relationship of multiple (eg, up to 16) SRS resources and directed to one of the multiple SRS resources by MAC CE.
  • UL TCI state (UL TCI state) Rel.
  • UL TCI status signaling is similar to UE DL beam (DL TCI status) signaling. Note that the DL TCI state may be interchanged with the TCI state for PDCCH/PDSCH.
  • Channels/signals (which may be called target channels/RSs) for which the UL TCI state is set (specified) are, for example, PUSCH (DMRS of PUSCH), PUCCH (DMRS of PUCCH), random access channel (Physical Random Access Channel (PRACH)), SRS, etc. may be at least one.
  • PUSCH DMRS of PUSCH
  • PUCCH DMRS of PUCCH
  • PRACH Physical Random Access Channel
  • SRS Physical Random Access Channel
  • the RS (source RS) that has a QCL relationship with the channel/signal may be, for example, a DL RS (eg, SSB, CSI-RS, TRS, etc.), or a UL RS (eg, SRS, beam management SRS, etc.) may be used.
  • a DL RS eg, SSB, CSI-RS, TRS, etc.
  • a UL RS eg, SRS, beam management SRS, etc.
  • an RS that has a QCL relationship with that channel/signal may be associated with a panel ID for receiving or transmitting that RS.
  • the association may be explicitly set (or designated) by higher layer signaling (for example, RRC signaling, MAC CE, etc.), or may be determined implicitly.
  • the correspondence between RSs and panel IDs may be included and set in the UL TCI state information, or may be included and set in at least one of the RS's resource setting information, spatial relationship information, and the like.
  • the QCL type indicated by the UL TCI state may be the existing QCL types A to D, or other QCL types, and may indicate a predetermined spatial relationship, associated antenna port (port index), etc. may contain.
  • the UE For UL transmission, if the UE is specified with the relevant panel ID (eg, specified by DCI), the UE may use the panel corresponding to the panel ID to perform the UL transmission.
  • a Panel ID may be associated with a UL TCI state, and the UE, when assigned (or activated) with a UL TCI state for a given UL channel/signal, will configure that UL channel according to the Panel ID associated with that UL TCI state. / You may specify the panel to use for signaling.
  • UL sub-band precoding Rel. 18 NR and later, when performing UL transmission (e.g., PUSCH transmission), it is possible to support UL subband precoding (or frequency selective precoding) that applies multiple precoding in the frequency domain. is assumed.
  • Frequency selective precoding may be read as subband precoding, separate precoding, frequency group precoding, or frequency direction precoding.
  • the frequency domain may be read as the frequency domain or the frequency direction.
  • a frequency unit may be read as a frequency resource unit, a subband unit, a frequency part unit, or a bandwidth unit.
  • the problem is how to set/indicate subband precoding (eg, precoding PMI) for CB-based PUSCH (eg, CB-based PUSCH).
  • precoding PMI subband precoding
  • A/B may be read as “at least one of A and B”
  • A/B/C may be read as “at least one of A, B and C”.
  • activate, deactivate, indicate (or indicate), select, configure, update, determine, notify, etc. may be read interchangeably.
  • CW, TB, beam, panel, PUSCH, PDSCH, UE panel, RS port group, DMRS port group, SRS port group, RS resource group, DMRS resource group, SRS resource group, beam group, TCI state group, Spatial relationship group, SRS resource indicator (SRI) group, antenna port group, antenna group, CORESET group, CORESET pool may be read interchangeably.
  • a panel may be associated with at least one of a panel ID, a UL TCI state, a UL beam, a DL beam, a DL RS resource, and spatial relationship information.
  • spatial relationship In the present disclosure, spatial relationship, spatial setting, spatial relationship information, spatialRelationInfo, SRI, SRS resource, precoder, UL TCI, TCI state, Unified TCI, QCL, etc. may be read interchangeably.
  • indexes, IDs, indicators, and resource IDs may be read interchangeably.
  • single DCI sDCI
  • single PDCCH single PDCCH
  • multi-TRP MTRP
  • scheduling multiple PUSCHs corresponding to different SRIs
  • sDCI-based MTRP Transmission activating two TCI states on at least one TCI codepoint
  • multi-DCI multi-PDCCH
  • multi-TRP system based on multi-DCI
  • mDCI-based MTRP mDCI-based MTRP transmission
  • multi-DCI is used for MTRP
  • repetition one repetition
  • occasion and channel
  • channel may be read interchangeably.
  • UL data, TB, CW, and UCI may be read interchangeably.
  • two CWs transmitted using PUSCH may be CWs with different contents or CWs with the same contents.
  • a PUSCH that transmits two CWs may be considered as one PUSCH transmitted simultaneously or repeatedly.
  • DCI in the following embodiments may be limited to a specific DCI format among DCI formats for scheduling PUSCH (eg, DCI formats 0_0, 0_1, 0_2), or may correspond to a plurality of DCI formats. good too.
  • common control the same control, the same processing
  • different control may be performed for each DCI format.
  • PUSCH transmission in the following embodiments may or may not be premised on the use of multiple panels (may be applied regardless of the panel).
  • PUSCH transmission is taken as an example of UL transmission, but it is not limited to this. It may be applied to channels/signals with frequency selective precoding. Also, in the following description, frequency selective precoding will be explained, but precoding in the time direction (time selective precoding) may be similarly applied.
  • At least one of the following options 1-1 to 1-3 may be applied as precoding control conditions/rules/parameters in the frequency direction.
  • CB-based transmissions for one or more (eg, two) CW/TB PUSCHs may be applied.
  • the same configuration may be applied to the two CW/TBs, or different configurations may be applied.
  • the granularity (or level) of frequency selective precoding for UL transmission may be defined/configured.
  • the granularity of precoding is a predetermined subcarrier unit, a predetermined resource block (RB) unit, a predetermined physical resource block (PRB) unit, a predetermined resource block group (RBG) unit, a predetermined subband unit, and a precoding resource block group (PRG) unit. It may be at least one of the units.
  • the granularity of precoding to be applied may be defined in advance in the specifications, or may be set in the UE by upper layer parameters or the like.
  • a reference value for example, X
  • precoding may be applied separately for each X RBGs.
  • the reference value X may be determined based on UE capabilities (eg, UE capabilities).
  • FIG. 3A shows an example of the case where the precoding granularity is in RBG units (here, 4 RBG (reference value 4)).
  • precoding may be applied/configured separately for each 4 RBGs.
  • the granularity of subband precoding may be defined in the specification for given conditions/parameters.
  • the predetermined condition/parameter may be at least one of a certain bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, DCI scheduled bandwidth (BW), and frequency range (FR). .
  • the association between subband precoding granularity (or reference value) and predetermined conditions/parameters may be defined using a new table or an existing table.
  • the association between the granularity of subband precoding and each parameter may be defined by reusing a table that associates the RBG size (or reference value) with the size of the bandwidth portion (see FIG. 4). .
  • FIG. 4 shows an example of the correspondence relationship between the bandwidth size and the RBG size.
  • a plurality of settings (cases) may be defined as the correspondence relationship between the bandwidth size and the RBG size. Which setting to use may be notified from the base station to the UE through higher layer signaling or the like.
  • Granularity/reference values for frequency selective precoding may be set/indicated to the UE based on at least one of RRC, MAC CE, and DCI.
  • candidates for granularity/reference values corresponding to predetermined conditions/parameters are defined in advance in specifications or set by upper layer parameters, etc., and specific granularity/reference values to be actually applied are MAC CE /DCI may be indicated to the UE.
  • the UE can appropriately control frequency selective precoding. Also, by adopting a configuration in which the granularity/reference value of frequency selective precoding can be changed, it becomes possible to flexibly control frequency selective precoding according to PUSCH transmission.
  • the number of frequency selective precoding for UL transmission may be defined/configured.
  • the number of frequency selective precoding indicates the number of frequency parts to which precoding can be applied separately in the frequency direction, or the number of frequency parts to which different precoding can be applied in the frequency direction.
  • a frequency part may be called a frequency part.
  • the UE may apply precoding separately for each frequency part.
  • Y frequency parts may be set for separate precoding for a bandwidth of Z (Z BW).
  • Z BW a bandwidth of Z
  • Application of separate precoding in the Y frequency parts may be supported.
  • FIG. 3B shows a case where the number of frequency selective precodings (for example, frequency parts for which frequency selective precoding is performed) is two. In this case, application of separate precoding for the two frequency parts in a given total UL bandwidth or a scheduled bandwidth may be supported.
  • the number of frequency selective precoding may be defined for a given condition/parameter.
  • the predetermined condition/parameter may be at least one of a certain bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, DCI scheduled bandwidth (BW), and frequency range (FR). .
  • the association between the number of frequency selective precodings and predetermined conditions/parameters may be defined using a new table or an existing table.
  • the number of frequency selective precoding may be set/indicated to the UE based on at least one of RRC, MAC CE and DCI.
  • the number of candidates corresponding to a predetermined condition / parameter e.g., candidate number
  • the specific number to be actually applied is indicated to the UE by MAC CE / DCI etc.
  • the number of frequency selective precoding may be determined based on predetermined parameters.
  • the predetermined parameter may be, for example, the bandwidth or frequency domain of the PUSCH to be scheduled.
  • frequency precoding can be flexibly controlled.
  • Frequency resources may be defined/configured as separate groups (eg, separate groups) for frequency selective precoding of UL transmissions.
  • a separate group includes a predetermined number of subcarriers (or a predetermined subcarrier level), a predetermined number of RBs (or a predetermined RB level), a predetermined number of PRBs (or a predetermined PRB level), a predetermined number of RBGs (or a predetermined RBG level), and at least one of a predetermined number of subbands (or a predetermined subband level).
  • the group ID of the separate group may be indicated as the frequency selective precoding group.
  • the group ID may be specified for a given condition/parameter at each level (e.g. X subcarrier/RB/PRB/RBG/subband level) or may be set by higher layer parameters.
  • the predetermined condition/parameter may be at least one of a certain bandwidth (BW), subcarrier spacing (SCS), total number of PRBs, DCI scheduled bandwidth (BW), and frequency range (FR). .
  • Levels indicated by the same group ID may be regarded as a group of certain frequency parts, and the same TPMI may be indicated (or applied).
  • Group IDs for all levels may be set by RRC/MAC CE/DCI.
  • FIG. 5 shows an example of applying frequency precoding based on a group (eg, separate group) unit.
  • the same precoding is applied to the frequency domain (subband precoding group 00) corresponding to the first frequency portion.
  • the same precoding is applied to each frequency region (subband precoding group 01) corresponding to the second frequency portion.
  • Whether or not to apply frequency selective precoding may be set/indicated based on at least one of RRC, MAC CE and DCI.
  • a predetermined field of DCI may be used to dynamically indicate to the UE whether to apply frequency selective precoding.
  • a predetermined field may be set in a predetermined DCI format (eg, a DCI format used for PUSCH scheduling (eg, DCI format 0_1/0_2)).
  • the predetermined field may be a new field (for example, 1 bit), or a field of an existing system (for example, before Rel.17) may be used.
  • a new field (eg, an indication field for frequency selective precoding) may be defined/applied as an indication for each PUSCH respectively scheduled by each DCI. This makes it possible to flexibly control whether or not to apply frequency selective precoding for each PUSCH transmission.
  • the new field may be defined/applied to one or more PUSCHs transmitted between the timing indicated by the new field and the new instruction (next instruction).
  • the new instruction next instruction
  • Whether or not to apply frequency selective precoding may be semi-statically set/instructed to the UE using RRC/MAC CE. In this case, switching of frequency selective precoding can be semi-statically controlled.
  • a predetermined condition for example, TPMI, etc.
  • frequency selective precoding is set (or enabled/activated) for UL transmission such as PUSCH
  • frequency selective precoding is configured by RRC/MAC CE/DCI, even if the DCI format includes a field indicating the TPMI corresponding to each frequency part of the UL transmission (for example, the new (Y-1) field) good.
  • Y may be the number of frequency parts (or the number of frequency selective precodings) for which frequency selective precoding is applied/configured.
  • the information (or table) corresponding to the code points indicating the first frequency part and the information (or table) corresponding to the code points indicating the other frequency parts are different. good too.
  • the rank of the first frequency part and TPMI may be indicated.
  • the remaining frequency parts eg, (Y ⁇ 1) frequency parts
  • a new TPMI field for TPMI notification may be set for each frequency part.
  • the rank/layer number and TPMI are indicated using fields/code points corresponding to some of the multiple frequency parts (eg, the first frequency part).
  • TPMI may be indicated using fields/code points corresponding to other frequency parts (rank/number of layers may not be indicated).
  • the size of the field corresponding to some of the multiple frequency parts (eg, the first frequency part) and the size of the field corresponding to the other frequency parts may be set in common or may be set differently. may be
  • the number of new fields (Y-1) (or the number of new fields) may be set in relation to the UL bandwidth (UL BW) .
  • the actual valid field number (or field number) may be related to the scheduled frequency resource (eg, FDRA).
  • Y 4.
  • FDRA Frequency Domain Resource Allocation
  • the interpretation/judgment of the TPMI field included in the DCI may be changed based on the frequency domain of the PUSCH to be scheduled.
  • the number of new fields included in the DCI (Y-1) (or number of new fields) may be determined.
  • Y 4.
  • FDRA Frequency Domain Resource Allocation
  • bit size of each field for TPMI/value of TPMI indication is the antenna port number, enable/disable of transform precoder, maximum rank (maxRank), and UL full power transmission settings. It may be determined based on at least one of a condition and a codebook subset setting condition. New tables for sub-band TPMI may also be defined based on the settings of these parameters.
  • FIG. 6 is a diagram showing an association/table between bits (for example, code points) of predetermined fields included in DCI and TPMI when frequency selective precoding is set/supported.
  • the predetermined field may be read as a new field, a TPMI indication field, or a field for frequency selective precoding.
  • the range of values of the TPMI indication may be rank (or layer) dependent according to the UL codebook (see Figures 2A-D). If restrictions/constraints are set on the subband precoding codebook, the range of values for the TPMI indication may be reduced.
  • a limit may be set on the codebook for UL subband precoding. For example, if 0-15 are set as valid precoding matrices for layer 1 and layer 2 of the UL subband precoding codebook, the table in FIG. The bit size of the field may be set to 4 bits.
  • the third embodiment may be applied to 1-CW PUSCH transmission.
  • 2CW PUSCH transmission or multi-TRP PUSCH repetition case MTRP PUSCH repetition case
  • option 3-1 below or Option 3-2 may apply.
  • the third embodiment may be applied in common to 2CW.
  • the third embodiment may be applied only to one CW (eg, the first CW).
  • An additional set of TPMI indication fields may be added to the DCI for the second CW/TRP.
  • the TPMI indication field may be called a precoding information indication field.
  • the additional set of TPMI fields may be Y new TPMI fields for each frequency part of the second CW/TRP.
  • the number of layers (or the number of ranks) may be determined based on the TPMI field (eg, precoding information and number of layers indication field) included in the DCI for the first CW/TRP.
  • the additional set of TPMI fields may be precoding information and the number of layers (eg, existing TPMI fields) + (Y-1) new TPMI fields for the second CW/TRP.
  • the fourth embodiment describes a modulation and coding scheme (MCS) when frequency selective precoding (or subband precoding) is set.
  • MCS modulation and coding scheme
  • MCS may be fixedly set to wideband, or set/set separately between wideband and subband by RRC/MAC CE/DCI. may be instructed.
  • a new field (eg, (Y-1) fields) indicating the MCS for each frequency part of the PUSCH is formatted DCI as well as the TPMI for each frequency part. may be included in
  • UE capability information In the above first to fourth embodiments, the following UE capabilities may be set. Note that the UE capabilities below may be read as parameters (eg, higher layer parameters) set in the UE from the network (eg, base station).
  • UE capability information regarding whether to support frequency selective precoding for UL MIMO may be defined.
  • Certain conditions/parameters are certain frequency ranges (e.g. FRx), certain BWs, certain ranks/antenna ports, certain UL transmission schemes (e.g. CB-based/non-CB-based PUSCH), enable/disable transform precoder, At least one of a UL full power transmission (ul-FullPowerTransmission) setting and a codebook subset.
  • UL frequency selective precoding may be supported in the case of a predetermined BW or more and a predetermined or less rank (number of layers).
  • UE capability information regarding whether to support additional CB restrictions for UL frequency selective precoding may be defined.
  • UE capability information regarding whether to support UL frequency selective precoding for 2 CW PUSCH/1 CW PUSCH may be defined.
  • UE capability information regarding whether to support UL frequency selective precoding for multi-TRPPUSCH repetition case (MTRP PUSCH repetition case)/single-TRPPUSCH (S-TRP PUSCH) may be defined.
  • UE capability information regarding whether to support UL subband MCS for PUSCH may be defined.
  • UE capability information regarding the number of subbands that the UE can support may be defined.
  • the first to fourth embodiments may be configured to be applied to a UE that supports/reports at least one of the UE capabilities described above.
  • the first to fourth embodiments may be configured to be applied to a UE set from the network.
  • wireless communication system A configuration of a wireless communication system according to an embodiment of the present disclosure will be described below.
  • communication is performed using any one of the radio communication methods according to the above embodiments of the present disclosure or a combination thereof.
  • FIG. 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to one 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 the Third Generation Partnership Project (3GPP). .
  • LTE Long Term Evolution
  • 5G NR 5th generation mobile communication system New Radio
  • 3GPP Third Generation Partnership Project
  • the wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
  • RATs Radio Access Technologies
  • MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)), etc.
  • RATs Radio Access Technologies
  • MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)), etc.
  • LTE Evolved Universal Terrestrial Radio Access
  • EN-DC E-UTRA-NR Dual Connectivity
  • NE-DC NR-E -UTRA Dual Connectivity
  • the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN).
  • the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
  • the wireless communication system 1 has dual connectivity between multiple base stations within 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.
  • dual connectivity NR-NR Dual Connectivity (NN-DC) in which both MN and SN are NR base stations (gNB)
  • gNB NR base stations
  • a wireless communication system 1 includes a base station 11 forming a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) arranged in the macrocell C1 and forming a small cell C2 narrower than the macrocell C1. You may prepare.
  • a user terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminals 20 are not limited to the embodiment shown in the figure.
  • the base stations 11 and 12 are collectively referred to as the base station 10 when not distinguished.
  • the user terminal 20 may connect to at least one of the multiple base stations 10 .
  • the user terminal 20 may utilize at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)).
  • Macrocell C1 may be included in FR1, and small cell C2 may be included in FR2.
  • FR1 may be a frequency band below 6 GHz (sub-6 GHz)
  • FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.
  • the user terminal 20 may communicate 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
  • a plurality of base stations 10 may be connected by wire (for example, an optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
  • wire for example, an optical fiber conforming to Common Public Radio Interface (CPRI), X2 interface, etc.
  • NR communication for example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) is an IAB Also called a node.
  • IAB Integrated Access Backhaul
  • relay station relay station
  • the base station 10 may be connected to the core network 30 directly or via another base station 10 .
  • the core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and the like.
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the user terminal 20 may be a terminal compatible with at least one of communication schemes such as LTE, LTE-A, and 5G.
  • a radio access scheme based on orthogonal frequency division multiplexing may be used.
  • OFDM orthogonal frequency division multiplexing
  • 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
  • a radio access method may be called a waveform.
  • other radio access schemes for example, other single-carrier transmission schemes and other multi-carrier transmission schemes
  • the UL and DL radio access schemes may be used as the UL and DL radio access schemes.
  • a downlink shared channel Physical Downlink Shared Channel (PDSCH)
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control Channel
  • an uplink shared channel (PUSCH) shared by each user terminal 20 an uplink control channel (PUCCH), a random access channel (Physical Random Access Channel (PRACH)) or the like may be used.
  • PUSCH uplink shared channel
  • PUCCH uplink control channel
  • PRACH Physical Random Access Channel
  • User data, upper layer control information, System Information Block (SIB), etc. are transmitted by the PDSCH.
  • User data, higher layer control information, and the like may be transmitted by PUSCH.
  • a Master Information Block (MIB) may be transmitted by the PBCH.
  • Lower layer control information may be transmitted by the PDCCH.
  • the lower layer control information may include, for example, downlink control information (DCI) including scheduling information for at least one of PDSCH and PUSCH.
  • DCI downlink control information
  • the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
  • the DCI that schedules PUSCH may be called UL grant, UL DCI, etc.
  • PDSCH may be replaced with DL data
  • PUSCH may be replaced with UL data.
  • a control resource set (CControl Resource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
  • CORESET corresponds to a resource searching for DCI.
  • the search space corresponds to the search area and search method of PDCCH candidates.
  • a CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with certain search spaces 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. Note that “search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. in the present disclosure may be read interchangeably.
  • PUCCH channel state information
  • acknowledgment information for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
  • SR scheduling request
  • a random access preamble for connection establishment with a cell may be transmitted by the PRACH.
  • downlink, uplink, etc. may be expressed without adding "link”.
  • various channels may be expressed without adding "Physical" to the head.
  • synchronization signals SS
  • downlink reference signals DL-RS
  • the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DeModulation Reference Signal (DMRS)), Positioning Reference Signal (PRS)), Phase Tracking Reference Signal (PTRS)), etc.
  • CRS cell-specific reference signal
  • CSI-RS channel state information reference signal
  • DMRS Demodulation reference signal
  • PRS Positioning Reference Signal
  • PTRS Phase Tracking Reference Signal
  • the synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • a signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called SS/PBCH block, SS Block (SSB), and so on.
  • SS, SSB, etc. may also be referred to as reference signals.
  • DMRS may also be called a user terminal-specific reference signal (UE-specific reference signal).
  • FIG. 8 is a diagram illustrating an example of the configuration of a base station according to one embodiment.
  • the base station 10 comprises a control section 110 , a transmission/reception section 120 , a transmission/reception antenna 130 and a transmission line interface 140 .
  • One or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission line interface 140 may be provided.
  • this example mainly shows the functional blocks that characterize the present embodiment, 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 unit described below may be omitted.
  • the control unit 110 controls the base station 10 as a whole.
  • the control unit 110 can be configured from a controller, a control circuit, and the like, which are explained based on common recognition in the technical field according to the present disclosure.
  • the control unit 110 may control signal generation, scheduling (eg, resource allocation, mapping), and the like.
  • the control unit 110 may control transmission/reception, measurement, etc. 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, etc., and transfer them to the transmission/reception unit 120 .
  • the control unit 110 may perform call processing (setup, release, etc.) of communication channels, state management of the base station 10, management of radio resources, and the like.
  • the transmitting/receiving section 120 may include a baseband section 121 , a radio frequency (RF) section 122 and a measuring section 123 .
  • the baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212 .
  • the transmitting/receiving unit 120 is configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, etc., which are explained based on 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 configured from a transmission unit and a reception unit.
  • the transmission section may be composed of the transmission processing section 1211 and the RF section 122 .
  • the receiving section may be composed of a reception processing section 1212 , an RF section 122 and a measurement section 123 .
  • the transmitting/receiving antenna 130 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
  • the transmitting/receiving unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmitting/receiving unit 120 may receive the above-described uplink channel, uplink reference signal, and the like.
  • the transmitting/receiving unit 120 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.
  • digital beamforming eg, precoding
  • analog beamforming eg, phase rotation
  • the transmission/reception unit 120 (transmission processing unit 1211) performs 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. may be performed to generate a bit string to be transmitted.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • HARQ retransmission control for example, HARQ retransmission control
  • the transmission/reception unit 120 (transmission processing unit 1211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (DFT) on the bit string to be transmitted. Processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-to-analog conversion may be performed, and the baseband signal may be output.
  • channel coding which may include error correction coding
  • modulation modulation
  • mapping mapping
  • filtering filtering
  • DFT discrete Fourier transform
  • DFT discrete Fourier transform
  • the transmitting/receiving unit 120 may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 130. .
  • the transmitting/receiving unit 120 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.
  • the transmission/reception unit 120 (reception processing unit 1212) performs analog-to-digital conversion, Fast Fourier transform (FFT) processing, and Inverse Discrete Fourier transform (IDFT) processing on the acquired baseband signal. )) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing. User data and the like may be acquired.
  • FFT Fast Fourier transform
  • IDFT Inverse Discrete Fourier transform
  • the transmitting/receiving unit 120 may measure the received signal.
  • the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, etc. based on the received signal.
  • the measurement unit 123 measures received power (for example, Reference Signal Received Power (RSRP)), reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)) , signal strength (for example, Received Signal Strength Indicator (RSSI)), channel information (for example, CSI), and the like may be measured.
  • RSRP Reference Signal Received Power
  • RSSQ Reference Signal Received Quality
  • SINR Signal to Noise Ratio
  • RSSI Received Signal Strength Indicator
  • channel information for example, CSI
  • the transmission path interface 140 transmits and receives signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, etc., and user data (user plane data) for the user terminal 20, control plane data, and the like. Data and the like may be obtained, transmitted, and the like.
  • the transmitter and receiver of the base station 10 in the present disclosure may be configured by at least one of the transmitter/receiver 120, the transmitter/receiver antenna 130, and the transmission line interface 140.
  • the transmitting/receiving unit 120 may transmit at least one of the first information about precoding in the frequency direction for the physical uplink shared channel and the second information about the transmission precoding matrix index.
  • the control unit 110 may control reception of physical uplink shared channels to which precoding is applied based on at least one of the first information and the second information.
  • FIG. 9 is a diagram illustrating an example of the configuration of a user terminal according to one embodiment.
  • the user terminal 20 includes a control section 210 , a transmission/reception section 220 and a transmission/reception antenna 230 .
  • One or more of each of the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided.
  • this example mainly shows the functional blocks of the features of the present embodiment, 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 unit described below may be omitted.
  • the control unit 210 controls the user terminal 20 as a whole.
  • the control unit 210 can be configured from a controller, a control circuit, and the like, which are explained based on 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, etc. using the transmission/reception unit 220 and the transmission/reception antenna 230 .
  • the control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transmission/reception unit 220 .
  • the transmitting/receiving section 220 may include a baseband section 221 , an RF section 222 and a measurement section 223 .
  • the baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212 .
  • the transmitting/receiving unit 220 can be configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, etc., which are explained based on 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 configured from a transmission unit and a reception unit.
  • the transmission section may be composed of a transmission processing section 2211 and an RF section 222 .
  • the receiving section may include a reception processing section 2212 , an RF section 222 and a measurement section 223 .
  • the transmitting/receiving antenna 230 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
  • the transmitting/receiving unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmitting/receiving unit 220 may transmit the above-described uplink channel, uplink reference signal, and the like.
  • the transmitter/receiver 220 may form at least one of the transmission beam and the reception beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.
  • digital beamforming eg, precoding
  • analog beamforming eg, phase rotation
  • the transmission/reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, for data and control information acquired from the control unit 210, for example , HARQ retransmission control), etc., to generate a bit string to be transmitted.
  • RLC layer processing for example, RLC retransmission control
  • MAC layer processing for example, for data and control information acquired from the control unit 210, for example , HARQ retransmission control
  • the transmitting/receiving unit 220 (transmission processing unit 2211) performs channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), and IFFT processing on a bit string to be transmitted. , precoding, digital-analog conversion, and other transmission processing may be performed, and the baseband signal may be output.
  • Whether or not to apply DFT processing may be based on transform precoding settings. Transmitting/receiving unit 220 (transmission processing unit 2211), for a certain channel (for example, PUSCH), if transform precoding is enabled, the above to transmit the channel using the DFT-s-OFDM waveform
  • the DFT process may be performed as the transmission process, or otherwise the DFT process may not be performed as the transmission process.
  • the transmitting/receiving unit 220 may perform modulation to a radio frequency band, filter processing, amplification, and the like on the baseband signal, and may transmit the radio frequency band signal via the transmitting/receiving antenna 230. .
  • the transmitting/receiving section 220 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 230.
  • the transmission/reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (error correction) on the acquired baseband signal. decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
  • the transmitting/receiving section 220 may measure the received signal.
  • the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
  • the measuring unit 223 may measure received power (eg, RSRP), received quality (eg, RSRQ, SINR, SNR), signal strength (eg, RSSI), channel information (eg, CSI), and the like.
  • the measurement result may be output to control section 210 .
  • the transmitter and receiver of the user terminal 20 in the present disclosure may be configured by at least one of the transmitter/receiver 220 and the transmitter/receiver antenna 230 .
  • the transmitting/receiving unit 220 may receive at least one of the first information about precoding in the frequency direction for the physical uplink shared channel and the second information about the transmission precoding matrix index.
  • the control unit 210 may control precoding applied to the physical uplink shared channel based on at least one of the first information and the second information.
  • the first information may include at least one of information about the granularity of precoding in the frequency direction, information about the number of precodings in the frequency direction, and information about the frequency parts included in the precoding group.
  • the first information may include information indicating whether or not to apply precoding to the physical uplink shared channel for each predetermined frequency part.
  • the downlink control information used for scheduling the physical uplink shared channel includes second information corresponding to each frequency part.
  • each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • function includes judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, deem , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (component) that performs transmission may be called a transmitting unit, a transmitter, or the like. In either case, as described above, the implementation method is not particularly limited.
  • a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 10 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to one embodiment.
  • the base station 10 and 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 each device shown in the figure, or may be configured without some devices.
  • processor 1001 may be implemented by one or more chips.
  • predetermined software program
  • the processor 1001 performs calculations, communication via the communication device 1004 and at least one of reading and writing data in the memory 1002 and the storage 1003 .
  • the processor 1001 operates an operating system and controls 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 device, registers, and the like.
  • CPU central processing unit
  • control unit 110 210
  • transmission/reception unit 120 220
  • FIG. 10 FIG. 10
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be similarly implemented.
  • the memory 1002 is a computer-readable recording medium, such as Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or at least any other suitable storage medium. may be configured by one.
  • the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray disc), removable disc, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium may be configured by Storage 1003 may also be called an auxiliary storage device.
  • a computer-readable recording medium for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray disc), removable disc, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium may be configured by Storage 1003 may also
  • the communication device 1004 is hardware (transmitting/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, or the like.
  • the communication device 1004 includes a high-frequency switch, duplexer, filter, frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD), for example. may be configured to include
  • the transmitting/receiving unit 120 (220), the transmitting/receiving antenna 130 (230), and the like described above may be realized by the communication device 1004.
  • the transmitter/receiver 120 (220) may be physically or logically separated into a transmitter 120a (220a) and a receiver 120b (220b).
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives 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. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • a signal may also be a message.
  • a reference signal may be abbreviated as RS, and may also be called a pilot, a pilot signal, etc., depending on the applicable standard.
  • a component carrier may also be called a cell, a frequency carrier, a carrier frequency, or the like.
  • a radio frame may consist of one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) that make up a radio frame may be called a subframe.
  • a subframe may consist of one or more slots in the time domain.
  • a subframe may be a fixed time length (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
  • Numerology for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration , a particular filtering process performed by the transceiver in the frequency domain, a particular windowing process performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may also be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in time units larger than a minislot may be referred to as PDSCH (PUSCH) Mapping Type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations. Note that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read interchangeably.
  • one subframe may be called a TTI
  • a plurality of consecutive subframes may be called a TTI
  • one slot or one minislot may be called a 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 Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the 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 called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the neumerology, eg twelve.
  • the number of subcarriers included in an RB may be determined based on neumerology.
  • an RB may contain one or more symbols in the time domain and may be 1 slot, 1 minislot, 1 subframe or 1 TTI long.
  • One TTI, one subframe, etc. may each be configured with one or more resource blocks.
  • One or more RBs are Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB Also called a pair.
  • PRB Physical Resource Block
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pair RB Also called a pair.
  • a resource block may be composed of one or more resource elements (Resource Element (RE)).
  • RE resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a Bandwidth Part (which may also be called a bandwidth part) represents a subset of contiguous common resource blocks (RBs) for a numerology on a carrier.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
  • BWP for UL
  • BWP for DL DL BWP
  • One or multiple BWPs may be configured for a UE within one carrier.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
  • the number of subframes contained in a radio frame, the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers and the number of symbols in a TTI, symbol length, cyclic prefix (CP) length, etc. can be varied.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. may be represented. For example, radio resources may be indicated by a predetermined index.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • information, signals, etc. can be output from a higher layer to a lower layer and/or from a lower layer to a higher layer.
  • Information, signals, etc. may be input and output through multiple 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 and output information, signals, etc. may be overwritten, updated or appended. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to other devices.
  • Uplink Control Information (UCI) Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may also be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like.
  • RRC signaling may also be called 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 (CE).
  • CE MAC Control Element
  • notification of predetermined information is not limited to explicit notification, but implicit notification (for example, by not notifying the predetermined information or by providing another information by notice of
  • the determination may be made by a value (0 or 1) represented by 1 bit, or by a boolean value represented by true or false. , may be performed by numerical comparison (eg, comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) , a server, or other remote source, these wired and/or wireless technologies are included within the definition of transmission media.
  • a “network” may refer to devices (eg, base stations) included in a network.
  • precoding "precoding weight”
  • QCL Quality of Co-Location
  • TCI state Transmission Configuration Indication state
  • spatialal patial relation
  • spatialal 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 interchangeable. can be used as intended.
  • base station BS
  • radio base station fixed station
  • NodeB NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission Point (TP)”, “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is assigned to a base station subsystem (e.g., a small indoor base station (Remote Radio)). Head (RRH))) may also provide communication services.
  • a base station subsystem e.g., a small indoor base station (Remote Radio)). Head (RRH)
  • RRH Head
  • the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.
  • MS Mobile Station
  • UE User Equipment
  • 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. , a handset, a user agent, a mobile client, a 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 a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and 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 as a user terminal.
  • communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
  • the user terminal 20 may have the functions of the base station 10 described above.
  • words such as "uplink” and “downlink” may be replaced with words corresponding to communication between terminals (for example, "sidelink”).
  • uplink channels, downlink channels, etc. may be read as sidelink channels.
  • user terminals in the present disclosure may be read as base stations.
  • the base station 10 may have the functions of the user terminal 20 described above.
  • operations that are assumed to be performed by the base station may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may involve the base station, one or more network nodes other than the base station (e.g., Clearly, this can be done by a Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. (but not limited to these) or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching along with execution. Also, the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in the present disclosure may be rearranged as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • 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 decimal number)
  • 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
  • IEEE 802.11 Wi-Fi®
  • IEEE 802.16 WiMAX®
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth®, or other suitable wireless It may be applied to systems using communication methods, next-generation systems extended based on these, and the like. Also, multiple systems may be applied to systems using communication methods, next-generation systems extended based on these, and the like
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • determining includes judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry ( For example, looking up in a table, database, or another data structure), ascertaining, etc. may be considered to be “determining.”
  • determining (deciding) includes receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access ( accessing (e.g., accessing data in memory), etc.
  • determining is considered to be “determining” resolving, selecting, choosing, establishing, comparing, etc. good too. That is, “determining (determining)” may be regarded as “determining (determining)” some action.
  • connection refers to any connection or coupling, direct or indirect, between two or more elements. and can include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other. Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
  • radio frequency domain when two elements are connected, using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-exhaustive examples, radio frequency domain, microwave They can be considered to be “connected” or “coupled” together using the domain, electromagnetic energy having wavelengths in the optical (both visible and invisible) domain, and the like.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”

Landscapes

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

Abstract

Un terminal selon un aspect de la présente divulgation comprend : une unité de réception qui reçoit des premières informations concernant le précodage d'un canal physique partagé de liaison montante dans une direction de fréquence et/ou des secondes informations concernant un indice de matrice de précodage de transmission ; et une unité de commande qui, sur la base des premières informations et/ou des secondes informations, commande qu'un précodage soit appliqué au canal physique partagé de liaison montante.
PCT/JP2021/029282 2021-08-06 2021-08-06 Terminal, procédé de communication sans fil et station de base WO2023013023A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202180101433.4A CN117837095A (zh) 2021-08-06 2021-08-06 终端、无线通信方法以及基站
PCT/JP2021/029282 WO2023013023A1 (fr) 2021-08-06 2021-08-06 Terminal, procédé de communication sans fil et station de base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/029282 WO2023013023A1 (fr) 2021-08-06 2021-08-06 Terminal, procédé de communication sans fil et station de base

Publications (1)

Publication Number Publication Date
WO2023013023A1 true WO2023013023A1 (fr) 2023-02-09

Family

ID=85155389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/029282 WO2023013023A1 (fr) 2021-08-06 2021-08-06 Terminal, procédé de communication sans fil et station de base

Country Status (2)

Country Link
CN (1) CN117837095A (fr)
WO (1) WO2023013023A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200275416A1 (en) * 2017-01-13 2020-08-27 Idac Holdings, Inc. Methods, apparatuses and systems directed to phase-continuous frequency selective precoding
JP2021516459A (ja) * 2018-01-12 2021-07-01 オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． アップリンクデータ伝送方法及び関連装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200275416A1 (en) * 2017-01-13 2020-08-27 Idac Holdings, Inc. Methods, apparatuses and systems directed to phase-continuous frequency selective precoding
JP2021516459A (ja) * 2018-01-12 2021-07-01 オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． アップリンクデータ伝送方法及び関連装置

Also Published As

Publication number Publication date
CN117837095A (zh) 2024-04-05

Similar Documents

Publication Publication Date Title
JP7268147B2 (ja) 端末、無線通信方法、基地局及びシステム
JP7234262B2 (ja) 端末、無線通信方法、基地局及びシステム
JP7264921B2 (ja) 端末、無線通信方法、基地局及びシステム
WO2021090403A1 (fr) Terminal et procédé de communication sans fil
WO2022149272A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2022029933A1 (fr) Terminal, procédé de communication sans fil, et station de base
WO2022153395A1 (fr) Terminal, procédé de communication sans fil et station de base
JP7230059B2 (ja) 端末、無線通信方法、基地局及びシステム
WO2022029979A1 (fr) Terminal, procédé de communication sans fil, et station de base
JP7168769B2 (ja) 端末、無線通信方法、基地局及びシステム
JP7323615B2 (ja) 端末及び無線通信方法
WO2020144782A1 (fr) Équipement utilisateur et procédé de communication sans fil
WO2022149274A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2022029934A1 (fr) Terminal, procédé de communication sans fil et station de base
US20230397121A1 (en) Terminal, radio communication method, and base station
WO2020194743A1 (fr) Terminal d'utilisateur et procédé de communication sans fil
WO2023013023A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023281676A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023281675A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023007670A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023281680A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023002610A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023002609A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2023002611A1 (fr) Terminal, procédé de communication sans fil et station de base
WO2022224457A1 (fr) Terminal, procédé de communication sans fil et station de base

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21952846

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE