WO2023203677A1 - Terminal, procédé de communication radio et station de base - Google Patents

Terminal, procédé de communication radio et station de base Download PDF

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Publication number
WO2023203677A1
WO2023203677A1 PCT/JP2022/018275 JP2022018275W WO2023203677A1 WO 2023203677 A1 WO2023203677 A1 WO 2023203677A1 JP 2022018275 W JP2022018275 W JP 2022018275W WO 2023203677 A1 WO2023203677 A1 WO 2023203677A1
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Prior art keywords
srs
information
value
transmission
resource
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PCT/JP2022/018275
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English (en)
Japanese (ja)
Inventor
祐輝 松村
尚哉 芝池
聡 永田
ジン ワン
ラン チン
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2022/018275 priority Critical patent/WO2023203677A1/fr
Publication of WO2023203677A1 publication Critical patent/WO2023203677A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system.
  • LTE Long Term Evolution
  • 3GPP Rel. 10-14 LTE-Advanced (3GPP Rel. 10-14) has been specified for the purpose of further increasing capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Releases (Rel.) 8 and 9).
  • LTE Long Term Evolution
  • 5G 5th generation mobile communication system
  • 5G+ plus
  • NR New Radio
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the uses of sounding reference signals will be wide-ranging.
  • the NR SRS is used not only for uplink (UL) CSI measurement, but also for downlink (DL) CSI measurement, beam management, and the like.
  • one of the purposes of the present disclosure is to provide a terminal, a wireless communication method, and a base station that suppress SRS interference.
  • a terminal includes a receiving unit that receives a configuration of a sounding reference signal (SRS) and receives a downlink control information format indicating a value of a parameter in the configuration, and and a control unit that controls transmission of the SRS.
  • SRS sounding reference signal
  • SRS interference can be suppressed.
  • FIG. 1 is a diagram illustrating an example of SRS resource set configuration information elements.
  • FIG. 2 is a diagram illustrating an example of SRS resource configuration information elements.
  • FIG. 3 is a diagram illustrating an example of association of parameters related to SRS.
  • FIG. 4 shows an example of a band for SRS frequency hopping.
  • FIG. 5 shows an example of SRS frequency hopping.
  • FIG. 6 shows another example of SRS frequency hopping.
  • FIG. 16 is a table showing the relationship between the number of transmission combs K TC and the maximum number of SRS cyclic shifts n SRS CS,max in No. 16.
  • FIG. 16 is a table showing the relationship between the number of transmission combs K TC and the maximum number of SRS cyclic shifts n SRS CS,
  • FIG. 8 is a table showing the number of transmission combs K TC and the SRS cyclic shift value n SRS CS,i when the number of SRS ports N ap SRS is 2.
  • FIG. 9 is a table showing the number of transmission combs K TC and the SRS cyclic shift value n SRS CS,i when the number of SRS ports N ap SRS is 4.
  • FIG. 10 is a diagram showing the resource start position k TC p_i in the frequency direction when the number of SRS ports N ap SRS is 2.
  • FIG. 11 is a diagram showing the resource start position k 0 p_i in the frequency direction when the number of SRS ports N ap SRS is 4.
  • FIG. 12A and 12B are diagrams illustrating an example of inter-TRP SRS interference.
  • FIG. 13 is a diagram illustrating an example of the SRS transmission instruction DCI.
  • FIG. 14 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 15 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • FIG. 16 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • FIG. 17 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
  • FIG. 18 is a diagram illustrating an example of a vehicle according to an embodiment.
  • SRS Signal Reference Signals
  • NR SRS is used not only for uplink (UL) CSI measurement, which is also used in existing LTE (LTE Rel. 8-14), but also for downlink (DL) CSI measurement, beam It is also used for beam management, etc.
  • the UE may be configured with one or more SRS resources.
  • SRS resources may be identified by an SRS Resource Index (SRI).
  • SRI SRS Resource Index
  • Each SRS resource may have one or more SRS ports (may correspond to one or more SRS ports).
  • the number of ports for each SRS may be 1, 2, 4, etc.
  • the UE may be configured with one or more SRS resource sets.
  • One SRS resource set may be associated with a predetermined number of SRS resources.
  • the UE may use upper layer parameters in common with respect to SRS resources included in one SRS resource set.
  • the resource set in the present disclosure may be read as a set, resource group, group, or the like.
  • Information regarding SRS resources or resource sets may be configured in the UE using upper layer signaling, physical layer signaling, or a combination thereof.
  • the SRS configuration information element may include an SRS resource set configuration information element (FIG. 1), an SRS resource configuration information element (FIG. 2), etc.
  • the SRS resource set configuration information element (for example, "SRS-ResourceSet” of the RRC parameter) includes an SRS resource set ID (Identifier) (SRS-ResourceSetId), a list of SRS resource IDs (SRS-ResourceId) used in the resource set, It may also include information on the SRS resource type (resourceType) and the usage of the SRS.
  • the SRS resource type may indicate the same time domain behavior of SRS resource configuration, such as periodic SRS (Periodic SRS (P-SRS)), semi-persistent SRS (Semi-Persistent SRS) (SP-SRS)) or aperiodic SRS (A-SRS).
  • P-SRS Period SRS
  • SP-SRS semi-persistent SRS
  • A-SRS aperiodic SRS
  • the UE may transmit the P-SRS and SP-SRS periodically (or periodically after activation).
  • the UE may transmit the A-SRS based on the DCI's SRS request.
  • SRS RRC parameter "usage", L1 (Layer-1) parameter "SRS-SetUse”
  • L1 (Layer-1) parameter "SRS-SetUse” is, for example, beam management (beamManagement), codebook (CB), non-codebook (CB), non-codebook (NCB)), antenna switching (antenna switching), etc.
  • the SRS for codebook or non-codebook use may be used to determine a precoder for SRI-based codebook-based or non-codebook-based Physical Uplink Shared Channel (PUSCH) transmission.
  • PUSCH Physical Uplink Shared Channel
  • SRS for beam management purposes may assume that only one SRS resource for each SRS resource set can be transmitted at a given time instant. Note that in the same Bandwidth Part (BWP), if a plurality of SRS resources corresponding to the same time domain behavior belong to different SRS resource sets, these SRS resources may be transmitted simultaneously.
  • BWP Bandwidth Part
  • the SRS resource configuration information element (e.g., "SRS-Resource" of the RRC parameter) includes the SRS resource ID (SRS-ResourceId), the number of SRS ports, the number of transmission combs, the SRS resource mapping (e.g., time and/or The information may include frequency resource location, resource offset, resource period, repetition number, number of SRS symbols, SRS bandwidth, etc.), hopping related information, SRS resource type, sequence ID, spatial relationship information, and the like.
  • SRS resource ID SRS-ResourceId
  • the information may include frequency resource location, resource offset, resource period, repetition number, number of SRS symbols, SRS bandwidth, etc.
  • hopping related information e.g., SRS resource type, sequence ID, spatial relationship information, and the like.
  • the value of the number of transmission combs is ⁇ 2,4 ⁇ .
  • the value of the number of SRS ports (nrofSRS-Ports) N ap SRS is ⁇ 1,2,4 ⁇ .
  • the value of antenna port number p i is ⁇ 1000,1001,... ⁇ .
  • the number of consecutive OFDM symbols of SRS (nrofSymbols) N symb is ⁇ 1,2,4 ⁇ .
  • Setting the number of transmission combs may include a comb offset and a cyclic shift (cyclic shift (CS) index, CS number).
  • CS cyclic shift
  • the UE may switch the Bandwidth Part (BWP) for transmitting SRS for each slot, or may switch the antenna. Further, the UE may apply at least one of intra-slot hopping and inter-slot hopping to SRS transmission.
  • BWP Bandwidth Part
  • the frequency domain starting position k 0 p_i for p i (p_i) is given by the following calculation formula.
  • k - indicates a variable with an overline attached to k, and may also be called k bar.
  • k - 0 p_i may be based on the comb offset K - TC .
  • KTC is the number of transmitted combs.
  • M SC,b SRS is the number of subcarriers used for SRS transmission in the SRS bandwidth m SRS,b [RB].
  • n b is a constant.
  • SRS bandwidth setting Rel.
  • C SRS ⁇ 0,...,63 ⁇ configuration index, row index
  • B SRS ⁇ 0, 1, 2, 3 ⁇ band division boundary number
  • the SRS bandwidth is determined using the table (association/mapping of parameters for SRS).
  • B SRS the available bandwidth is divided into several parts. Multiple parts are used for SRS hopping.
  • C SRS configures a set of SRS bands.
  • B SRS divides the available bandwidth into multiple parts. B The larger the SRS , the greater the number of frequency partitions (the smaller the size of the frequency partitions).
  • Parameters b hop ⁇ 0, 1, 2, 3 ⁇ are set for SRS frequency hopping. If b hop ⁇ B SRS , SRS frequency hopping is enabled. As shown in the example of FIG. 5, SRS is transmitted using the SRS band among the bands (hopping bands) given for SRS frequency hopping.
  • SRS SRS frequency hopping
  • Multi-port SRS transmission Multiport SRS transmission
  • the UE When performing multiport SRS transmission, the UE performs multiplexing using cyclic shift. Equation (1) indicates the cyclic shift ⁇ i at the antenna port P i .
  • Formula (1) is Rel. 17 is being considered for use.
  • the number of transmitted combs KTC is eight.
  • FIG. 7 shows Rel. 16 is a table showing the relationship between the number of transmission combs K TC and the maximum number of SRS cyclic shifts n SRS CS,max in No. 16. Note that it is assumed that n SRS CS,max ⁇ 0,1,...,n SRS CS,max ⁇ and N ap SRS ⁇ 1,2,4 ⁇ .
  • FIG. 8 is a table showing the number of transmission combs K TC and the SRS cyclic shift value n SRS CS,i when the number of SRS ports N ap SRS is 2.
  • FIG. 9 is a table showing the number of transmission combs K TC and the SRS cyclic shift value n SRS CS,i when the number of SRS ports N ap SRS is 4.
  • Equation (2) indicates the resource start position k 0 p_i in the frequency direction.
  • Formula (2) is expressed as Rel. 17 is being considered for use. Note that among the three cases of k - TC p_i , the first case (A) corresponds to odd-numbered ports ⁇ 1001, 1003 ⁇ when the number of transmission combs is 8.
  • the third case (case C) is another case.
  • n shift is set by the parameter freqDomainShift of the SRS resource configuration information element (FIG. 2).
  • k - TC is set by combOffset of the SRS resource configuration information element.
  • the transmissionComb of the SRS resource configuration information element is used for KTC . That is, in case C, the value of the RRC parameter is applied as is.
  • FIG. 10 is a diagram showing the resource start position k TC p_i in the frequency direction when the number of SRS ports N ap SRS is 2. In this example, case C of equation (2) is used.
  • FIG. 11 is a diagram showing the resource start position k 0 p_i in the frequency direction when the number of SRS ports N ap SRS is 4.
  • SRS base series The SRS sequence is given by the following equation.
  • x ⁇ y represents a mark with y attached to the upper right of x.
  • r ⁇ p i (n,l') r u,v ⁇ ( ⁇ i , ⁇ )(n) 0 ⁇ n ⁇ M sc,b
  • SRS -1 ⁇ r u,v ⁇ ( ⁇ i , ⁇ )(n) e j ⁇ n r - u,v (n), 0 ⁇ n ⁇ M ZC
  • the SRS sequence is obtained by applying the cyclic shift ⁇ i to the base sequence r ⁇ u,v (n).
  • the base sequence r ⁇ u,v (n) is a low peak to average power ratio (PAPR) sequence.
  • the low PARR sequence may be a constant amplitude zero auto-correlation (CAZAC) sequence (for example, a Zadoff-Chu (ZC) sequence) or a sequence defined in a specification.
  • CAZAC constant amplitude zero auto-correlation
  • ZC Zadoff-Chu
  • At least one of sequence hopping and group hopping for low PAPR sequences may be configured by RRC.
  • the base sequence r - u,v (n) is divided into multiple groups.
  • r - indicates a variable with an overline attached to r, and may also be called r bar.
  • v represents the base sequence number within the group.
  • the definition of the base sequence r - u,v (0),...,r - u,v (M ZC -1) depends on the sequence length M ZC .
  • Group hopping is based on the SRS sequence IDn ID SRS and the symbol number within the radio frame for the SRS resource.
  • the symbol number is the slot number n s,f ⁇ in the radio frame, the number of symbols in the slot N symb slot , the starting symbol l 0 for the SRS resource, the SRS symbol number l' in the SRS resource, determined by
  • sequence number is based on the symbol number within the radio frame for that SRS resource.
  • JT Joint transmission may refer to simultaneous data transmission from multiple points (eg, TRPs) to a single UE.
  • Rel. 17 supports non-coherent joint transmission (NCJT) from two TRPs.
  • PDSCHs from the two TRPs may be independently precoded and independently decoded.
  • Frequency resources may be non-overlapping, partially overlapping, or full-overlapping. If overlap occurs, the PDSCH from one TRP will interfere with the PDSCH from the other TRP.
  • CJT coherent joint transmission
  • Data from the four TRPs may be coherently precoded and transmitted to the UE on the same time-frequency resource.
  • the same precoding matrix may be used.
  • Coherent may mean that there is a fixed relationship between the phases of multiple received signals.
  • 4TRP joint precoding the signal quality is improved and there is no interference between the 4 TRPs.
  • Data may only be subject to interference outside of the four TRPs.
  • a CJT is a transmission from coherent multiple TRPs on different MIMO layers on the same time and frequency resources.
  • the SRS set by one TRP may be received simultaneously by coherent multiple TRPs.
  • the base station For support of multi-TRP (MTRP) CJT up to 4 TRPs, the base station needs to obtain DL CJT CSI from 4 TRPs.
  • a base station can estimate DL CSI through UL SRS measurements that take into account UL-DL channel reciprocity.
  • multiple TRPs should be able to measure SRS from CJT UE (cell edge UE).
  • the following policies 1 and 2 can be considered.
  • Policy 1 Improve SRS capabilities so that all UEs using up to 4 TRPs are configured with orthogonal SRS resources to avoid inter-TRP interference.
  • cell-edge UE #1 of TRP #2 transmits SRS #1-1 to TRP #1 and SRS #1-2 to TRP #2.
  • Measurement of SRS #1-2 from cell edge UE #1 is subject to strong interference from SRS #2-2 from cell center UE #2 of TRP #2 due to non-orthogonality in TRP #2.
  • FIG. 12B when the time and frequency resources of SRS #1-2 partially overlap with the time and frequency resources of SRS #2-2, fixed interference will occur. If such interference cannot be avoided, there is a risk that communication throughput will decrease.
  • the present inventors came up with a method for dynamically indicating parameters related to SRS.
  • A/B and “at least one of A and B” may be read interchangeably. Furthermore, in the present disclosure, “A/B/C” may mean “at least one of A, B, and C.”
  • Radio Resource Control RRC
  • RRC parameters RRC parameters
  • RRC messages upper layer parameters, fields, Information Elements (IEs), settings, etc.
  • IEs Information Elements
  • CE Medium Access Control Element
  • update command activation/deactivation command, etc.
  • the upper layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), or the like.
  • Broadcast information includes, for example, a master information block (MIB), a system information block (SIB), a minimum system information (RMSI), and other system information ( Other System Information (OSI)) may also be used.
  • MIB master information block
  • SIB system information block
  • RMSI minimum system information
  • OSI Other System Information
  • the physical layer signaling may be, for example, downlink control information (DCI), uplink control information (UCI), etc.
  • DCI downlink control information
  • UCI uplink control information
  • an index an identifier (ID), an indicator, a resource ID, etc.
  • ID an identifier
  • indicator an indicator
  • resource ID a resource ID
  • sequences, lists, sets, groups, groups, clusters, subsets, etc. may be used interchangeably.
  • Rel.XX indicates a 3GPP release.
  • release number “XX” is just an example, and may be replaced with another number.
  • the CS index, CS number, CS value (cyclic shift value), n SRS cs and n SRS cs,i may be read interchangeably.
  • the SRS sequence may be a low peak-to-average power ratio (PAPR) sequence defined by a cyclic shift (CS) ⁇ i of the base sequence.
  • ⁇ i may be given by 2 ⁇ *n SRS cs, i /n SRS cs,max using the CS index n SRS cs,i and the maximum CS number n SRS cs,max .
  • n SRS cs,i is based on CS index n SRS cs , n SRS cs,max , antenna port number p i , and port number N ap SRS , ⁇ 0,1,...n SRS cs,max -1 ⁇ It may be.
  • the CS index n SRS cs or n SRS cs,i may be set by upper layer signaling or may be included in the transmission comb configuration (upper layer parameter transmissionComb).
  • transmission comb settings, transmissionComb, and number of transmission combs may be interchanged.
  • the transmission comb configuration may include at least one of the number of transmission combs (K TC ), a comb offset (starting subcarrier offset), and a CS index.
  • At least one of P-SRS, SP-SRS, and AP-SRS may be used as the SRS in the present disclosure.
  • PSRS and P-SRS may be read interchangeably.
  • SP SRS and SP-SRS may be read interchangeably.
  • AP SRS and AP-SRS may be read interchangeably.
  • the resource set group and the SRS resource set group may be interchanged.
  • xTyR is applied, “txry” is transmitted (reported) in UE capability information (e.g., supportedSRS-TxPortSwitch), and xTyR is configured in upper layer signaling/physical layer signaling. It may be read differently.
  • UL transmission with a number of layers greater than 4 may be applied.
  • the processing of the present disclosure may be applied to UEs that support a number of layers greater than four.
  • SRS port, transmission port, and SRS transmission port may be read interchangeably.
  • reception port, antenna port, and UE antenna port may be interchanged.
  • a port and an antenna port may be read interchangeably.
  • X ports in the present disclosure may mean X antenna ports (SRS antenna ports).
  • multiplexing using different comb indexes, frequency division multiplexing (FDM), and multiplexing using the same time resource and different frequency resources may be interchanged.
  • multiplexing using different cyclic shift indexes, Code Division Multiplexing (CDM), multiplexing using different cyclic shift indexes and the same time resource and the same frequency resource may be read as each other.
  • ports #0 to #7 may be replaced with ports #1000 to #1007. That is, 1000 may be added to each port number for ports #0 to #7.
  • the dynamic indication, DCI, DCI format 0_1/0_2/1_1/1_2, DCI including fields of SRS request (triggered A-SRS resource set)/SRS resource set/SRS resource indication, are mutually exclusive. It may be read differently.
  • upper layer configured ID configurable index, specific index, TRP index, panel index, index introduced for CJT, antenna port index, RS (SRS) port index, CORESET pool
  • SRS RS
  • This embodiment relates to dynamic instructions to the SRS.
  • the DCI When a DCI triggers an aperiodic (A) SRS resource set, the DCI includes a dynamic indication (dynamic update) of one or more of the following parameters (information elements): (You can also support it.)
  • the DCI may include an SRS resource set/SRS resource indication field.
  • - SRS resource set ID in case the triggered aperiodic SRS resource set includes more than one SRS resource.
  • - Indication of time domain allocation for indicated SRS resources - Indication of frequency domain allocation for indicated SRS resources.
  • - Indication of comb number of transmission combs
  • CS cyclic shift
  • TPC transmission power control
  • the DCI includes a field that triggers A-SRS (first instruction, SRS instruction, SRS resource set/SRS resource instruction) and a specific DCI field (first instruction) that indicates one or more specific parameters. 2 instructions).
  • the presence or absence of a specific DCI field is set by an RRC parameter common to the case where SRS triggering is accompanied by data scheduling/CSI triggering and the case where SRS triggering is not accompanied by data scheduling/CSI triggering. It's okay.
  • Whether or not a specific DCI field exists is set by individual RRC parameters in cases where SRS triggering is accompanied by data scheduling/CSI triggering and cases where SRS triggering is not accompanied by data scheduling/CSI triggering. It's okay.
  • Whether or not a specific DCI field exists may be set only for cases where SRS triggering does not involve data scheduling/CSI triggering. In this case, for SRS triggering without data scheduling/CSI triggering, unused DCI fields (e.g., DCI fields used for data scheduling/CSI triggering) are reused for another purpose/use. may be done. In this case, the new DCI field for SRS triggering without data scheduling/CSI triggering may not exist.
  • New UE capability signaling/reporting may be introduced indicating that the UE supports dynamic indication of one or more of its specific parameters or each specific parameter.
  • the dynamic indication of one or more specific parameters may be used to update SRS resources or SRS resource sets of periodic (P)/semi-persistent (SP) SRS.
  • SRS interference can be flexibly controlled by DCI dynamically changing SRS resources.
  • the instruction field for time domain placement for the indicated SRS resource may be an indication/update of a specific parameter of one or more of the following parameters: ⁇ Start position l 0 (startPosition). The starting position of the OFDM symbol position of that SRS resource within the slot (position in the direction from the last symbol of the slot to the start symbol of the slot). - Number of symbols Nsymb SRS (nrofSymbols). The number of symbols in the OFDM symbol position of that SRS resource within the slot. - Repetition factor R (repetitionFactor, number of repetitions). ⁇ resourceMapping (contains at least one of startPosition, nrofSymbols, and repetitionFactor).
  • the one or more specific parameters may be indicated by fields of their joint indication, or may be indicated by fields of separate indications corresponding to each specific parameter.
  • the DCI may update some or all of the one or more specific parameters.
  • the time domain arrangement of SRS resources can be dynamically updated.
  • the indication field for frequency domain placement for the indicated SRS resource may be an indication/update of a specific parameter of one or more of the following parameters: ⁇ Frequency domain position n RRC (freqDomainPosition). ⁇ Frequency domain shift n shift (freqDomainShift).
  • the one or more specific parameters may be indicated by fields of their joint indication, or may be indicated by fields of separate indications corresponding to each specific parameter.
  • the DCI may update some or all of the one or more specific parameters.
  • the frequency domain arrangement of SRS resources can be dynamically updated.
  • the indication field for the comb/CS for the indicated SRS resource may be an indication/update of one or more specific parameters among the following parameters: - Number of transmitted combs K TC (n2/n4, comb2/comb4). - Comb offset K - TC (combOffset-n2/combOffset-n4, comb offset for a certain number of transmitted combs K TC , starting subcarrier offset). - CS (cyclicShift-n2/cyclicShift-n4, CS for a certain transmission comb number KTC , integer n SRS cs used for CS determination).
  • the one or more specific parameters may be indicated by fields of their joint indication, or may be indicated by fields of separate indications corresponding to each specific parameter.
  • the DCI may update some or all of the one or more specific parameters.
  • the comb/CS of the SRS resource can be dynamically updated.
  • the indication field for hopping configuration for the indicated SRS resource may be an indication/update of a specific parameter of one or more of the following parameters: -SRS band set C SRS (c-SRS). - Bandwidth B SRS (b-SRS, integer) of one of the configured sets. - Parameter b hop (b-hop, integer) for SRS frequency hopping. - Parameters for SRS frequency hopping (freqHopping, information including parameters c-SRS/b-SRS/b-hop for SRS frequency hopping). - Setting of base sequence group (sequence group number) hopping or sequence (sequence number) hopping (groupOrSequenceHopping) for SRS.
  • the one or more specific parameters may be indicated by fields of their joint indication, or may be indicated by fields of separate indications corresponding to each specific parameter.
  • the DCI may update some or all of the one or more specific parameters.
  • the hopping configuration of SRS resources can be dynamically updated.
  • the UE may support MAC CE for updating one or more specific parameters for one or more SRS resources.
  • the UE may support an RRC IE that configures multiple settings for one or more specific parameters for one or more SRS resources.
  • the plurality of settings may be respectively associated with a plurality of IDs.
  • a UE may support a MAC CE that indicates one or more configurations for one or more specific parameters for one or more SRS resources.
  • a UE may support UE group common DCI for one or more specific parameters for multiple UEs.
  • DCI format 2_3 may be used as the DCI.
  • DCI format 2_3 is used for sending a group of TPC commands for SRS transmission by one or more UEs.
  • the indication of one or more specific parameters in embodiments #0 to #4 may be applied to the indicated SRS resource.
  • the indication of the one or more specific parameters may be applied to the second/third/fourth hop or second/third/fourth symbol within the indicated SRS resource.
  • the value of the specific parameter (time/frequency/comb/CS/hopping/sequence ID) of the first symbol may be different from the value of the specific parameter of the second symbol.
  • At least one of the embodiments described above may apply only to UEs that have reported or support a particular UE capability.
  • the particular UE capability may indicate at least one of the following: - Support processing/operation/control/information for at least one of the above embodiments. - Supporting dynamic indication of one or more specific parameters or each specific parameter. ⁇ Support CJT. - Support reception from coherent multiple TRPs.
  • the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (for example, cell, band, BWP). , capability for each frequency range (for example, Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or for each subcarrier spacing (SCS). It may be the ability of
  • the above-mentioned specific UE capability may be a capability that is applied across all duplex schemes (commonly regardless of the duplex scheme), or may be a capability that is applied across all duplex schemes (for example, Time Division Duplex).
  • the capability may be for each frequency division duplex (TDD)) or frequency division duplex (FDD)).
  • the UE is configured with specific information related to the embodiment described above by upper layer signaling.
  • the specific information may be information indicating enabling at least one feature of the embodiments described above, any RRC parameters for a specific release (eg, Rel. 18), or the like. _r18 may be added to the name of the RRC parameter.
  • the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, for example, Rel. 15/16 operations may be applied.
  • the UE can realize the above functions while maintaining compatibility with existing specifications.
  • a receiving unit that receives a configuration of a sounding reference signal (SRS) and receives a downlink control information format indicating a value of a parameter in the configuration;
  • a terminal comprising: a control unit that controls transmission of the SRS based on the setting and the value.
  • the downlink control information format includes a first field for triggering the SRS and a second field indicating the value.
  • the parameters are set by SRS resource ID, time domain arrangement, frequency domain arrangement, number of transmission combs, cyclic shift, hopping setting, transmission power control command, sequence ID, and upper layer signaling.
  • the terminal according to supplementary note 1 or supplementary note 2, which indicates at least one of the following.
  • the setting indicates a first value of the parameter
  • the downlink control information format indicates a second value of the parameter
  • the terminal according to any one of appendices 1 to 3, wherein the control unit updates the parameter from the first value to the second value in response to reception of the downlink control information format.
  • wireless communication system The 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 wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof.
  • FIG. 14 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by 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 support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
  • MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
  • RATs Radio Access Technologies
  • MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
  • E-UTRA 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 (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
  • the NR base station (gNB) is the MN
  • 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) where both the MN and SN are NR base stations (gNB)). )) may be supported.
  • dual connectivity NR-NR Dual Connectivity (NN-DC) where both the MN and SN are NR base stations (gNB)).
  • the wireless communication system 1 includes a base station 11 that forms a macro cell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are located within the macro cell C1 and form a small cell C2 that is narrower than the macro cell C1. You may prepare.
  • User terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.
  • the user terminal 20 may be connected to at least one of the plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
  • Macro cell C1 may be included in FR1
  • 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 FR1 may correspond to a higher frequency band than FR2, for example.
  • 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
  • the plurality of base stations 10 may be connected by wire (for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)) or wirelessly (for example, NR communication).
  • wire for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)
  • NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is an upper station, is an Integrated Access Backhaul (IAB) donor, and base station 12, which is a relay station, is an IAB donor. May also be called a node.
  • IAB Integrated Access Backhaul
  • the base station 10 may be connected to the core network 30 via another base station 10 or directly.
  • the core network 30 may include, 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 systems such as LTE, LTE-A, and 5G.
  • an orthogonal frequency division multiplexing (OFDM)-based wireless access method 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 wireless access method may also be called a waveform.
  • other wireless access methods for example, other single carrier transmission methods, other multicarrier transmission methods
  • the UL and DL radio access methods may be used as the UL and DL radio access methods.
  • the downlink channels include a physical downlink shared channel (PDSCH) shared by each user terminal 20, a broadcast channel (physical broadcast channel (PBCH)), and a downlink control channel (physical downlink control). Channel (PDCCH)) or the like may be used.
  • PDSCH physical downlink shared channel
  • PBCH physical broadcast channel
  • PDCCH downlink control channel
  • uplink channels include a physical uplink shared channel (PUSCH) shared by each user terminal 20, an uplink control channel (PUCCH), and a random access channel. (Physical Random Access Channel (PRACH)) or the like may be used.
  • PUSCH physical 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, upper layer control information, etc. may be transmitted by PUSCH.
  • a Master Information Block (MIB) may be transmitted via the PBCH.
  • Lower layer control information may be transmitted by PDCCH.
  • the lower layer control information may include, for example, downlink control information (DCI) that includes scheduling information for at least one of PDSCH and PUSCH.
  • DCI downlink control information
  • DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
  • 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 (CONtrol REsource SET (CORESET)) and a search space may be used to detect the PDCCH.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to a search area and a search method for PDCCH candidates (PDCCH candidates).
  • PDCCH candidates PDCCH candidates
  • One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.
  • 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.
  • the PUCCH allows channel state information (CSI), delivery confirmation information (for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and scheduling request ( Uplink Control Information (UCI) including at least one of SR)) may be transmitted.
  • CSI channel state information
  • delivery confirmation information for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
  • UCI Uplink Control Information including at least one of SR
  • a random access preamble for establishing a connection with a cell may be transmitted by PRACH.
  • downlinks, uplinks, etc. may be expressed without adding "link”.
  • various channels may be expressed without adding "Physical” at the beginning.
  • a synchronization signal (SS), a downlink reference signal (DL-RS), and the like may be transmitted.
  • the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), and a demodulation reference signal (DeModulation).
  • Reference Signal (DMRS)), Positioning Reference Signal (PRS), Phase Tracking Reference Signal (PTRS), etc. may be transmitted.
  • the synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).
  • a signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS/PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.
  • DMRS Downlink Reference Signal
  • UL-RS uplink reference signals
  • SRS Sounding Reference Signal
  • DMRS demodulation reference signals
  • UE-specific reference signal user terminal-specific reference signal
  • FIG. 15 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • the base station 10 includes a control section 110, a transmitting/receiving section 120, a transmitting/receiving antenna 130, and a transmission line interface 140. Note that one or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided.
  • this example mainly shows functional blocks that are characteristic of 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 entire base station 10.
  • the control unit 110 can be configured from a controller, a control circuit, etc., which will be explained based on common recognition in the technical field related to the present disclosure.
  • the control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), and the like.
  • the control unit 110 may control transmission and reception, measurement, etc. using the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
  • the control unit 110 may generate data, control information, a sequence, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 120.
  • the control unit 110 may perform communication channel call processing (setting, release, etc.), status management of the base station 10, radio resource management, 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 transmitter/receiver unit 120 includes a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter/receiver circuit, etc., which are explained based on common understanding in the technical field related to the present disclosure. be able to.
  • the transmitting/receiving section 120 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
  • the transmitting section may include a transmitting processing section 1211 and an RF section 122.
  • the reception section may include 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 transmitter/receiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transmitter/receiver 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmitting/receiving unit 120 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transmitting/receiving 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 transmitting/receiving unit 120 performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, and discrete Fourier transform (DFT) on the bit string to be transmitted.
  • a baseband signal may be output by performing transmission processing such as processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion.
  • IFFT Inverse Fast Fourier Transform
  • the transmitting/receiving unit 120 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 130. .
  • the transmitting/receiving section 120 may perform amplification, filter processing, demodulation into a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.
  • the transmitting/receiving unit 120 (reception processing unit 1212) performs analog-to-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) processing (if necessary), applying reception processing such as filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing, User data etc. may also be acquired.
  • FFT fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • the transmitting/receiving unit 120 may perform measurements regarding 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)), propagation path information (for example, CSI), etc. may be measured.
  • the measurement results may be output to the control unit 110.
  • the transmission path interface 140 transmits and receives signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and transmits and receives user data (user plane data) for the user terminal 20, control plane It is also possible to acquire and transmit data.
  • the transmitting unit and receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
  • the transmitting/receiving unit 120 may transmit settings for a sounding reference signal (SRS) and may transmit a downlink control information format indicating values of parameters within the settings.
  • the control unit 110 may control reception of the SRS based on the setting and the value.
  • SRS sounding reference signal
  • FIG. 16 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • the user terminal 20 includes a control section 210, a transmitting/receiving section 220, and a transmitting/receiving antenna 230. Note that 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 functional blocks that are characteristic 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 entire user terminal 20.
  • the control unit 210 can be configured from a controller, a control circuit, etc., which will be explained based on common recognition in the technical field related to the present disclosure.
  • the control unit 210 may control signal generation, mapping, etc.
  • the control unit 210 may control transmission and reception using the transmitting/receiving unit 220 and the transmitting/receiving antenna 230, measurement, and the like.
  • the control unit 210 may generate data, control information, sequences, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 220.
  • the transmitting/receiving section 220 may include a baseband section 221, an RF section 222, and a measuring 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 measuring circuit, a transmitting/receiving circuit, etc., which are explained based on common recognition in the technical field related to the present disclosure.
  • the transmitting/receiving section 220 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
  • the transmitting section may include a transmitting processing section 2211 and an RF section 222.
  • the reception 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, such as an array antenna, as described based on common recognition in the technical field related to the present disclosure.
  • the transmitter/receiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transmitter/receiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmitting/receiving unit 220 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transmission/reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (e.g. RLC retransmission control), MAC layer processing (e.g. , HARQ retransmission control), etc., to generate a bit string to be transmitted.
  • RLC layer processing e.g. RLC retransmission control
  • MAC layer processing e.g. , HARQ retransmission control
  • the transmitting/receiving unit 220 (transmission processing unit 2211) performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, DFT processing (as necessary), and IFFT processing on the bit string to be transmitted. , precoding, digital-to-analog conversion, etc., and output a baseband signal.
  • DFT processing may be based on the settings of transform precoding.
  • the transmitting/receiving unit 220 transmits the above processing in order to transmit the channel using the DFT-s-OFDM waveform.
  • DFT processing may be performed as the transmission processing, or if not, DFT processing may not be performed as the transmission processing.
  • the transmitting/receiving unit 220 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 230. .
  • the transmitting/receiving section 220 may perform amplification, filter processing, demodulation into 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), filter processing, demapping, demodulation, and decoding (error correction) on the acquired baseband signal. (which may include decoding), MAC layer processing, RLC layer processing, and PDCP layer processing may be applied to obtain user data and the like.
  • the transmitting/receiving unit 220 may perform measurements regarding the received signal.
  • the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
  • the measurement unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
  • the measurement results may be output to the control unit 210.
  • the transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.
  • the transmitting/receiving unit 220 may receive a configuration of a sounding reference signal (SRS) and receive a downlink control information format indicating values of parameters within the configuration.
  • the control unit 210 may control the transmission of the SRS based on the setting and the value.
  • SRS sounding reference signal
  • the downlink control information format may include a first field for triggering the SRS and a second field indicating the value.
  • the parameters are set by SRS resource ID, time domain arrangement, frequency domain arrangement, number of transmission combs, cyclic shift, hopping setting, transmission power control command, sequence ID, and upper layer signaling. It may also indicate at least one of the following.
  • the settings may indicate a first value of the parameter
  • the downlink control information format may indicate a second value of the parameter.
  • the control unit 210 may update the parameter from the first value to the second value in response to receiving the downlink control information format.
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • functions include judgment, decision, judgement, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and consideration. , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (configuration unit) 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. 17 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an 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, etc. .
  • 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 not to include some of the devices.
  • processor 1001 may be implemented using one or more chips.
  • Each function in the base station 10 and the user terminal 20 is performed by, for example, loading predetermined software (program) onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations and communicates via the communication device 1004. This is achieved by controlling at least one of reading and writing data in the memory 1002 and storage 1003.
  • predetermined software program
  • the processor 1001 operates an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • the above-mentioned control unit 110 (210), transmitting/receiving unit 120 (220), etc. may be realized by the processor 1001.
  • 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 in accordance with these.
  • programs program codes
  • software modules software modules
  • data etc.
  • the control unit 110 may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks may also be realized in the same way.
  • the memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. It may be composed of one. Memory 1002 may be called a register, cache, main memory, or the like.
  • the memory 1002 can store executable programs (program codes), software modules, and the like to implement a wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
  • a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
  • the communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be configured to include.
  • FDD frequency division duplex
  • TDD time division duplex
  • 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 (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts 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 performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
  • the base station 10 and user terminal 20 also 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 to include 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 hardwares.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • channel, symbol and signal may be interchanged.
  • the signal may be a message.
  • the reference signal may also be abbreviated as RS, and may be called a pilot, pilot signal, etc. depending on the applicable standard.
  • a component carrier CC may be called a cell, a frequency carrier, a carrier frequency, or the like.
  • a radio frame may be composed of one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting a radio frame may be called a subframe.
  • a subframe may be composed of one or more slots in the time domain.
  • a subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
  • Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, and radio frame configuration. , a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • a slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Furthermore, a slot may be a time unit based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots 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. Other names may be used for the radio frame, subframe, slot, minislot, and symbol. 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.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the minimum time unit for scheduling 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
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes 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, etc.
  • TTI TTI in 3GPP Rel. 8-12
  • normal TTI long TTI
  • normal subframe normal subframe
  • long subframe slot
  • TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers (subcarriers) in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • an RB may include one or more symbols in the time domain, and may have a length of one slot, one minislot, one subframe, or one TTI.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs include a physical resource block (Physical RB (PRB)), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, and an RB. They may also be called pairs.
  • PRB Physical RB
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB. They may also be called pairs.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • Bandwidth Part (also called partial bandwidth, etc.) refers to a subset of consecutive common resource blocks (RB) for a certain numerology in a certain carrier.
  • the common RB may be specified by an RB index based on a 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 UL BWP
  • BWP for DL DL BWP
  • One or more BWPs may be configured within one carrier for a UE.
  • 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 of the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • the structures of the radio frame, subframe, slot, minislot, symbol, etc. described above are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB The number of subcarriers, the number of symbols within a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • radio resources may be indicated by a predetermined index.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • information, signals, etc. may be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layer.
  • Information, signals, etc. may be input and output via 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. Information, signals, etc. that are input and output can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
  • Notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
  • the notification of information in this disclosure may be physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof It may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof It may be carried out by
  • 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), etc.
  • RRC signaling may 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 prescribed information is not limited to explicit notification, but may be made implicitly (for example, by not notifying the prescribed information or by providing other information) (by notification).
  • the determination may be made by a value expressed by 1 bit (0 or 1), or by a boolean value expressed by true or false. , may be performed by numerical comparison (for example, comparison with a predetermined value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wired technology such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology such as infrared, microwave, etc.
  • Network may refer to devices (eg, base stations) included in the network.
  • precoding "precoding weight”
  • QCL quadsi-co-location
  • TCI state "Transmission Configuration Indication state
  • space space
  • spatial relation "spatial domain filter”
  • transmission power "phase rotation”
  • antenna port "antenna port group”
  • layer "number of layers”
  • Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, and “panel” are interchangeable.
  • Base Station BS
  • Wireless base station Wireless base station
  • Fixed station NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission Point (TP)”, “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
  • cell “sector,” “cell group,” “carrier,” “component carrier,” and the like
  • a base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is connected to a base station subsystem (e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)).
  • a base station subsystem e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)
  • RRH Remote Radio Communication services
  • the term “cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
  • a base station transmitting information to a terminal may be interchanged with the base station instructing the terminal to control/operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal. , handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc.
  • a transmitting device may be called a transmitting device, a receiving device, a wireless communication device, etc.
  • the base station and the mobile station may be a device mounted on a moving object, the moving object itself, or the like.
  • the moving body refers to a movable object, and the moving speed is arbitrary, and naturally includes cases where the moving body is stopped.
  • the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships (ships and other watercraft). , including, but not limited to, airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and items mounted thereon.
  • the mobile object may be a mobile object that autonomously travels based on a travel command.
  • the moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ).
  • a vehicle for example, a car, an airplane, etc.
  • an unmanned moving object for example, a drone, a self-driving car, etc.
  • 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 the mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • FIG. 18 is a diagram illustrating an example of a vehicle according to an embodiment.
  • the vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (current sensor 50, (including a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service section 59, and a communication module 60.
  • current sensor 50 including a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58
  • an information service section 59 including a communication module 60.
  • the drive unit 41 is composed of, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor.
  • the steering unit 42 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.
  • the electronic control unit 49 includes a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input/output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49.
  • the electronic control section 49 may be called an electronic control unit (ECU).
  • the signals from the various sensors 50 to 58 include a current signal from the current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheel 46/rear wheel 47 obtained by the rotation speed sensor 51, and a signal obtained by the air pressure sensor 52.
  • air pressure signals of the front wheels 46/rear wheels 47 a vehicle speed signal acquired by the vehicle speed sensor 53, an acceleration signal acquired by the acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by the accelerator pedal sensor 55, and a brake pedal sensor.
  • 56 a shift lever 45 operation signal obtained by the shift lever sensor 57, and an object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc. There are signals etc.
  • the information service department 59 includes various devices such as car navigation systems, audio systems, speakers, displays, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It consists of one or more ECUs that control the The information service unit 59 provides various information/services (for example, multimedia information/multimedia services) to the occupants of the vehicle 40 using information acquired from an external device via the communication module 60 or the like.
  • various information/services for example, multimedia information/multimedia services
  • the information service unit 59 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • the driving support system unit 64 includes millimeter wave radar, Light Detection and Ranging (LiDAR), a camera, a positioning locator (for example, Global Navigation Satellite System (GNSS), etc.), and map information (for example, High Definition (HD)). maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMUs), inertial navigation systems (INS), etc.), artificial intelligence ( Artificial Intelligence (AI) chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving burden, as well as one or more devices that control these devices. It consists of an ECU. Further, the driving support system section 64 transmits and receives various information via the communication module 60, and realizes a driving support function or an automatic driving function.
  • LiDAR Light Detection and Ranging
  • GNSS Global Navigation Satellite System
  • HD High Definition
  • maps for example, autonomous vehicle (AV) maps, etc.
  • gyro systems e.g.,
  • the communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63.
  • the communication module 60 communicates via the communication port 63 with a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, which are included in the vehicle 40.
  • Data (information) is transmitted and received between the axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58.
  • the communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication.
  • the communication module 60 may be located either inside or outside the electronic control unit 49.
  • the external device may be, for example, the base station 10, user terminal 20, etc. described above.
  • the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (it may function as at least one of the base station 10 and the user terminal 20).
  • the communication module 60 receives signals from the various sensors 50 to 58 described above that are input to the electronic control unit 49, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 59. At least one of the information based on the information may be transmitted to an external device via wireless communication.
  • the electronic control unit 49, various sensors 50-58, information service unit 59, etc. may be called an input unit that receives input.
  • the PUSCH transmitted by the communication module 60 may include information based on the above input.
  • the communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 59 provided in the vehicle.
  • the information service unit 59 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 60). may be called.
  • the communication module 60 also stores various information received from external devices into a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 controls the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, and left and right rear wheels provided in the vehicle 40. 47, axle 48, various sensors 50-58, etc. may be controlled.
  • the base station in the present disclosure may be replaced by a user terminal.
  • communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • each aspect/embodiment of the present disclosure may be applied.
  • the user terminal 20 may have the functions that the base station 10 described above has.
  • words such as "uplink” and “downlink” may be replaced with words corresponding to inter-terminal communication (for example, "sidelink”).
  • uplink channels, downlink channels, etc. may be replaced with sidelink channels.
  • the user terminal in the present disclosure may be replaced with a base station.
  • the base station 10 may have the functions that the user terminal 20 described above has.
  • the operations performed by the base station may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (e.g. It is clear that this can be performed by a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc. (though not limited thereto), or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular 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 x is an integer or decimal number, for example
  • Future Radio Access FAA
  • RAT New-Radio Access Technology
  • NR New Radio
  • NX New Radio Access
  • FX Future Generation Radio Access
  • G Global System for Mobile Communications
  • CDMA2000 Ultra Mobile Broadband
  • UMB Ultra Mobile Broadband
  • IEEE 802 .11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate wireless communication methods.
  • the present invention may be applied to systems to be used, next-generation systems expanded, modified, created, or defined based on these
  • the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • determining may encompass a wide variety of actions. For example, “judgment” can mean judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry ( For example, searching in a table, database, or other data structure), ascertaining, etc. may be considered to be “determining.”
  • judgment (decision) includes receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), access ( may be considered to be “determining”, such as accessing data in memory (eg, accessing data in memory).
  • judgment is considered to mean “judging” resolving, selecting, choosing, establishing, comparing, etc. Good too.
  • judgment (decision) may be considered to be “judgment (decision)” of some action.
  • the "maximum transmit power" described in this disclosure may mean the maximum value of transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the It may also mean rated UE maximum transmit power).
  • connection refers to any connection or coupling, direct or indirect, between two or more elements.
  • the coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • microwave when two elements are connected, they may be connected using one or more electrical wires, cables, printed electrical connections, etc., as well as in the radio frequency domain, microwave can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the light (both visible and invisible) range.
  • a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
  • the i-th (i is any integer), not only in the elementary, comparative, and superlative, but also interchangeably (for example, "the highest” can be interpreted as “the i-th highest”). may be read interchangeably).

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

Abstract

Le terminal selon un aspect de la présente divulgation comprend : une unité de réception qui reçoit un réglage de signal de référence de sondage (SRS) et reçoit un format d'informations de commande de liaison descendante indiquant des valeurs de paramètres dans le réglage ; et une unité de commande qui commande la transmission du SRS sur la base du réglage et de la valeur. Selon un aspect de la présente divulgation, il est possible de supprimer des interférences de SRS.
PCT/JP2022/018275 2022-04-20 2022-04-20 Terminal, procédé de communication radio et station de base WO2023203677A1 (fr)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2020536471A (ja) * 2017-10-02 2020-12-10 テレフオンアクチーボラゲット エルエム エリクソン（パブル） サウンディング参照送信
US20210359819A1 (en) * 2019-02-01 2021-11-18 Huawei Technologies Co., Ltd. Device, Network, and Method for Sounding Reference Signal Transmission and Reception
WO2022029900A1 (fr) * 2020-08-04 2022-02-10 株式会社Ｎｔｔドコモ Terminal, procédé de communication sans fil et station de base

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Publication number Priority date Publication date Assignee Title
JP2020536471A (ja) * 2017-10-02 2020-12-10 テレフオンアクチーボラゲット エルエム エリクソン（パブル） サウンディング参照送信
US20210359819A1 (en) * 2019-02-01 2021-11-18 Huawei Technologies Co., Ltd. Device, Network, and Method for Sounding Reference Signal Transmission and Reception
WO2022029900A1 (fr) * 2020-08-04 2022-02-10 株式会社Ｎｔｔドコモ Terminal, procédé de communication sans fil et station de base

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INTERDIGITAL, INC.: "Remaining issues on beam management", 3GPP DRAFT; R1-1804845 REMAINING ISSUES ON BEAM MANAGEMENT_FINAL, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Sanya, China; 20180416 - 20180420, 7 April 2018 (2018-04-07), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051414197 *
NTT DOCOMO, INC: "Discussion on SRS enhancement", 3GPP DRAFT; R1-2107843, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210816 - 20210827, 6 August 2021 (2021-08-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052033640 *

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