WO2021063337A1 - Method executed by user equipment, and user equipment - Google Patents

Method executed by user equipment, and user equipment Download PDF

Info

Publication number
WO2021063337A1
WO2021063337A1 PCT/CN2020/118651 CN2020118651W WO2021063337A1 WO 2021063337 A1 WO2021063337 A1 WO 2021063337A1 CN 2020118651 W CN2020118651 W CN 2020118651W WO 2021063337 A1 WO2021063337 A1 WO 2021063337A1
Authority
WO
WIPO (PCT)
Prior art keywords
optionally
synchronization
synchronized
configuration
synchronization source
Prior art date
Application number
PCT/CN2020/118651
Other languages
French (fr)
Chinese (zh)
Inventor
罗超
刘仁茂
赵毅男
Original Assignee
夏普株式会社
罗超
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 夏普株式会社, 罗超 filed Critical 夏普株式会社
Publication of WO2021063337A1 publication Critical patent/WO2021063337A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present invention relates to a method executed by a user equipment and a user equipment.
  • synchronization sources are defined in NR SL (and 5G V2X based on NR SL, see Non-Patent Document 4), and each synchronization source corresponds to a priority. How to determine the priority of the corresponding synchronization source for the UE that is synchronizing is a problem that needs to be solved.
  • Non-Patent Document 1 RP-152293, New WI proposal: Support for V2V services based on LTE sidelink
  • Non-Patent Document 2 RP-170798, New WID on 3GPP V2X Phase 2
  • Non-Patent Document 3 RP-170855, New WID on New Radio Access Technology
  • Non-Patent Document 4 RP-190766, New WID on 5G V2X with NR sidelink
  • the present invention provides a method executed by a user equipment and a user equipment, so that the UE determines the priority of the synchronization source being detected and/or received as early as possible during the process of searching for the synchronization source, and reduces The time to determine the synchronization source is small.
  • a method performed by a user equipment UE which is characterized by including: obtaining synchronization source priority indication information from another UE as a synchronization source; and according to the obtained synchronization source priority indication information, Determine the priority of the synchronization source.
  • the synchronization source priority indication information indicates the set ⁇ direct synchronization to GNSS UE, Indirectly synchronized to the GNSS UE, directly synchronized to the base station UE, indirectly synchronized to the base station UE, other UE ⁇ .
  • the synchronization source priority indication information indicates the set ⁇ UE synchronized to GNSS, synchronization A value in the UE to the base station, other UE ⁇ .
  • the synchronization source priority indication information indicates the set ⁇ direct synchronized UE, indirect synchronization UE, other UE ⁇ .
  • the synchronization source priority indication information indicates the set ⁇ UE directly synchronized to the GNSS , Indirectly synchronized to the GNSS UE, a value in other UE ⁇ .
  • the synchronization source priority indication information indication set ⁇ UE directly synchronized to the base station, UE indirectly synchronized to the base station, and directly synchronized to the global navigation satellite system GNSS UE , Indirectly synchronized to the GNSS UE, a value in other UE ⁇ .
  • the synchronization source priority indication information indicates a value in the set ⁇ UE synchronized to the base station, UE synchronized to the global navigation satellite system GNSS, other UE ⁇ .
  • the synchronization source priority indication information indicates a value in the set ⁇ directly synchronized UE, indirectly synchronized UE, other UE ⁇ .
  • the synchronization source priority indication information is indicated by the payload of the physical direct broadcast channel PSBCH and/or the direct synchronization signal identifier SL SSID.
  • the present invention also provides a method executed by a user equipment and a user equipment, so that the UE can derive the DFN from the information of the SSB in the DFN period, without directly logging in the SL
  • the MIB indicates complete DFN information, which improves the efficiency of time domain information indication.
  • a method executed by a user equipment UE is proposed, which is characterized by including: acquiring SL timing indication information; and determining SL timing information according to the acquired timing indication information.
  • the present invention also provides a method executed by user equipment and user equipment, which not only ensures the flexibility of SL time domain resource configuration, but also greatly reduces the signaling overhead in SL SSB. .
  • a method executed by a user equipment UE is provided, which is characterized by including: obtaining SL time domain resource indication information; and determining the SL time domain resource according to the obtained time domain resource indication information.
  • a user equipment which is characterized by comprising: a processor; and a memory storing instructions, wherein the instructions execute the above-mentioned method when run by the processor.
  • the UE is enabled to determine the priority of the synchronization source being detected and/or received as early as possible in the process of searching for the synchronization source, and the time for determining the synchronization source is reduced.
  • the UE can derive DFN from the information of the SSB in the DFN period without directly indicating complete DFN information in the SL MIB, which improves the efficiency of time domain information indication.
  • the flexibility of SL time domain resource configuration is ensured, and the signaling overhead in the SL SSB is greatly reduced.
  • Figure 1 shows an example of the division and numbering of direct frames, direct half-frames, direct subframes, and direct time slots.
  • FIG. 2 shows an example of the relationship between "DFN period”, "number of SL SSB periods in DFN period”, and "number of SL SSB transmissions in SL SSB period”.
  • Fig. 3 shows a flowchart of a method executed by a user equipment according to the first embodiment of the present invention.
  • Fig. 4 shows a flowchart of a method executed by a user equipment according to the second embodiment of the present invention.
  • Fig. 5 shows a flowchart of a method executed by a user equipment according to the third embodiment of the present invention.
  • Fig. 6 shows a block diagram of the user equipment UE involved in the present invention.
  • 3GPP 3rd Generation Partnership Project
  • the third generation partnership project the third generation partnership project
  • BWP Bandwidth Part, Bandwidth Part
  • CA Carrier Aggregation, carrier aggregation
  • CCE control-channel element, control channel element
  • CORESET control-resource set, control resource set
  • CP Cyclic Prefix, cyclic prefix
  • CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing, Cyclic Prefix Orthogonal Frequency Division Multiplexing
  • CRB Common Resource Block, common resource block
  • CRC Cyclic Redundancy Check, cyclic redundancy check
  • CSI Channel-state Information, channel state information
  • DCI Downlink Control Information, downlink control information
  • DFN Direct Frame Number, direct frame number
  • DFT-s-OFDM Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing
  • DL-SCH Downlink Shared Channel, downlink shared channel
  • DM-RS Demodulation reference signal, demodulation reference signal
  • eMBB Enhanced Mobile Broadband, enhanced mobile broadband communications
  • eNB E-UTRAN Node B, E-UTRAN Node B
  • E-UTRAN Evolved UMTS Terrestrial Radio Access Network, the evolved UMTS terrestrial radio access network
  • FDD Frequency Division Duplex, Frequency Division Duplex
  • FDRA Frequency Domain Resource Assignment, frequency domain resource allocation
  • GLONASS GLObal NAvigation Satellite System, Global Navigation Satellite System
  • gNB NR Node B, NR Node B
  • GNSS Global Navigation Satellite System, Global Navigation Satellite System
  • GPS Global Positioning System, Global Positioning System
  • ID Identity (or Identifier), identity, identifier
  • IP Internet Protocol, Internet Protocol
  • LCID Logical Channel ID, logical channel identifier
  • LTE Long Term Evolution, long-term evolution
  • LTE-A Long Term Evolution-Advanced, Long Term Evolution-Upgraded Version
  • MAC Medium Access Control, medium access control
  • MAC CE MAC Control Element, MAC control element
  • MCG Master Cell Group, master cell group
  • MIB Master Information Block, master information block
  • MIB-SL Master Information Block-Sidelink, master information block-go straight
  • MIB-SL-V2X Master Information Block-Sidelink-V2X, master information block-straight-going-V2X
  • MIB-V2X Master Information Block-V2X, Master Information Block-V2X
  • mMTC massive Machine Type Communication, large-scale machine type communication
  • NAS Non-Access-Stratum, non-access layer
  • NDI New Data Indicator, new data indicator
  • NUL Normal Uplink, normal uplink
  • OFDM Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
  • PBCH Physical Broadcast Channel, physical broadcast channel
  • PDCCH Physical Downlink Control Channel, physical downlink control channel
  • PDCP Packet Data Convergence Protocol, packet data convergence protocol
  • PDSCH Physical Downlink Shared Channel, physical downlink shared channel
  • PSBCH Physical Sidelink Broadcast Channel, physical direct broadcast channel
  • PSCCH Physical Sidelink Control Channel, physical direct control channel
  • PSFCH Physical Sidelink Feedback Channel, physical direct feedback channel
  • PSSCH Physical Sidelink Shared Channel, physical direct shared channel
  • PRB Physical Resource Block, physical resource block
  • PSS Primary Synchronization Signal, the primary synchronization signal
  • PSS-SL Primary Synchronization Signal for Sidelink, direct main synchronization signal
  • PSSS Primary Sidelink Synchronization Signal, main straight line synchronization signal
  • PTAG Primary Timing Advance Group, the main timing advance group
  • PUSCH Physical uplink shared channel, physical uplink shared channel
  • PUCCH Physical uplink control channel, physical uplink control channel
  • QoS Quality of Service, quality of service
  • QZSS Quasi-Zenith Satellite System, Quasi-Zenith Satellite System
  • RAR Random Access Response, Random Access Response
  • RB Resource Block, resource block
  • REG resource-element group, resource element group
  • RF Radio Frequency, radio frequency
  • RLC Radio Link Control, radio link control protocol
  • Radio-Network Temporary Identifier Radio-Network Temporary Identifier, wireless network temporary identifier
  • RRC Radio Resource Control, radio resource control
  • RV Redundancy Version, redundant version
  • S-BWP Sidelink Bandwidth Part, straight bandwidth segment
  • S-MIB Sidelink Master Information Block, go straight to the master information block
  • S-PSS Sidelink Primary Synchronization Signal, direct main synchronization signal
  • S-SSB Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
  • S-SSS Sidelink Secondary Synchronization Signal, direct-travel secondary synchronization signal
  • SCG Secondary Cell Group, secondary cell group
  • SCI Sidelink Control Information, direct control information
  • SCS Subcarrier Spacing, subcarrier spacing
  • SDAP Service Data Adaptation Protocol, service data adaptation protocol
  • SFN System Frame Number, system frame number
  • SIB System Information Block, system information block
  • SL BWP Sidelink Bandwidth Part, straight bandwidth segment
  • SL MIB Sidelink Master Information Block
  • SL PSS Sidelink Primary Synchronization Signal, direct main synchronization signal
  • SL SS Sidelink Synchronization Signal, direct synchronization signal
  • SL SSID Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
  • SL SSB Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
  • SL SSS Sidelink Secondary Synchronization Signal, direct-travel secondary synchronization signal
  • SLSS Sidelink Synchronization Signal, direct synchronization signal
  • SLSS ID Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
  • SLSSID Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
  • SpCell Special Cell, special cell
  • SRS Sounding Reference Signal, sounding reference signal
  • SSB SS/PBCH block, synchronization signal/physical broadcast channel block
  • SSB-SL SS/PBCH block for Sidelink, direct synchronization signal/physical broadcast channel block
  • SSS Secondary Synchronization Signal, secondary synchronization signal
  • SSS-SL Secondary Synchronization Signal for Sidelink, direct auxiliary synchronization signal
  • SSSB Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
  • SSSS Secondary Sidelink Synchronization Signal, auxiliary direct synchronization signal
  • Timing Advance Timing Advance
  • TAG Timing Advance Group, timing advance group
  • Transport Block transport block
  • TCP Transmission Control Protocol, Transmission Control Protocol
  • TDD Time Division Duplex, time division duplex
  • TPC Transmit power control, transmission power control
  • UE User Equipment, user equipment
  • UMTS Universal Mobile Telecommunications System
  • Universal Mobile Telecommunications System Universal Mobile Telecommunications System
  • V2I Vehicle-to-Infrastructure, vehicle to infrastructure
  • V2N Vehicle-to-network, vehicle-to-network
  • V2P Vehicle-to-Pedestrian, vehicle to pedestrian
  • V2V Vehicle-to-vehicle, vehicle-to-vehicle
  • V2X Vehicle-to-everything, vehicle to any entity
  • VRB Virtual Resource Block, virtual resource block
  • the interface between devices can be called PC5 interface, and the corresponding transmission link can be called at the physical layer. It is a "straight" or “sidelink” (SL) link, which is used to distinguish between an uplink (UL) link and a downlink (DL) link.
  • Communication based on the SL link can be called SL communication (sidelink communication).
  • the SL link and the corresponding SL communication can be based on LTE technology (hereinafter referred to as LTE SL) or NR technology (hereinafter referred to as NR SL).
  • 5G V2X communication can be based on LTE SL or NR SL. Unless otherwise specified below, "SL” refers to NR SL.
  • the physical layer of the SL interface can support one or more modes in one or more of the in-coverage, out-of-coverage, and partial-coverage scenarios For example, broadcast transmission, groupcast transmission, unicast transmission, and so on.
  • the SCS subcarrier spacing, subcarrier spacing, denoted as ⁇ f, in kHz
  • the SCS can be 15kHz (normal CP), or 30kHz (normal CP), or 60kHz (normal CP) Or extended CP
  • the SCS corresponding to the SL link can be 60kHz (normal CP or extended CP), or 120kHz (normal CP).
  • the signals and channels related to the SL synchronization function can include:
  • ⁇ PSBCH Physical Sidelink Broadcast Channel, physical direct broadcast channel
  • SL PSS, SL SSS, and PSBCH together can be organized into blocks on time-frequency resources, for example, called SL SSB (Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block), or S-SSB, Or called SSB, or SL-SSB, or SSB-SL.
  • the transmission bandwidth of the SL SSB (for example, 11 resource blocks) is located in the SL BWP (Sidelink Bandwidth Part) configured for the UE, or S-BWP, or SBWP, or SL-BWP, or Referred to as BWP-SL).
  • SL PSS and/or SL SSS can carry SL SSID (Sidelink Synchronization Identity, or Sidelink Synchronization Identifier), or Sidelink Synchronization Signal Identity, or Sidelink Synchronization Signal Identity, or Sidelink Synchronization Signal Identity, or SL-SSID, or SL-SSID Called SSID-SL, or SLSSID, or SLSS ID, or S-SSID, etc.), PSBCH can carry SL MIB (Sidelink Master Information Block), or SL-MIB , Or S-MIB, or MIB-SL, or MIB-SL-V2X).
  • the SL MIB may include configuration information of the SL link, for example, information related to the direct frame number or the direct subframe number or the direct time slot number where the PSBCH (or the corresponding SL SSB) carrying the SL MIB is located.
  • the synchronization source related to SL synchronization may include GNSS (Global Navigation Satellite System), gNB, eNB, and UE (for example, NR UE, LTE UE, NR UE or LTE UE).
  • GNSS Global Navigation Satellite System
  • gNB Global Navigation Satellite System
  • eNB eNode B
  • UE for example, NR UE, LTE UE, NR UE or LTE UE.
  • a UE serving as a synchronization source for example, a UE transmitting SL and SSB
  • SyncRef UE for example, a UE transmitting SL and SSB
  • the priority of the synchronization source can be defined as shown in Table 1.
  • the configuration or pre-configuration information can be used to determine whether to use "GNSS-based synchronization” (ie the second column in Table 1) or "gNB/eNB-based synchronization” (ie, the third column in Table 1).
  • the "define gNB/eNB-based synchronization source” refers to the definition of "gNB/eNB”, "UE synchronized directly to gNB/eNB” and “indirectly synchronized to gNB/eNB” in the second column of Table 1.
  • UE these three synchronization sources.
  • the "defining a synchronization source based on gNB/eNB” may sometimes be referred to as "using a synchronization source based on gNB/eNB”.
  • priorities in the first column of Table 1 is just an example, and the priorities can also be numbered and/or named in other ways; for example, when using “GNSS-based If the synchronization source based on gNB/eNB is not defined, the “other UE” in the second column of Table 1 can also be numbered and/or named “P3” instead of “P6”.
  • the "other UEs" in the second column of Table 1 may include “UEs directly synchronized to gNB/eNB” and/or "UE synchronized to gNB/eNB indirectly” may not include “UE synchronized directly to gNB/eNB” and/or "UE synchronized to gNB/eNB indirectly”.
  • GNSS Global Positioning System
  • GLONASS Globalbal Navigation Satellite System
  • BeiDou BeiDou Navigation Satellite System
  • Galileo Galileo Navigation Satellite System
  • QZSS Quadrature-Zenith Satellite System
  • Quasi-Zenith Satellite System Quasi-Zenith Satellite System
  • the synchronization source is a GNSS or a base station (such as gNB, or eNB, etc.)
  • synchronization is in progress (for example, synchronization-related signals and/or channels from one or more synchronization sources are being detected)
  • the UE can infer the priority of the corresponding synchronization source from the type of synchronization source. For example, if the configuration or pre-configuration information indicates "gNB/eNB-based synchronization", and the synchronization source being detected is gNB or eNB, it can be seen from Table 1 that the priority of the synchronization source being detected is P0.
  • the synchronization source is SyncRef UE
  • how the UE that is synchronizing determines the priority of the corresponding synchronization source is a problem that needs to be solved.
  • the SL link can be divided into multiple direct frames in the time domain (direct frame, or system frame, system frame, or wireless frame, radio frame, sometimes abbreviated as frame, frame).
  • Frames are numbered (for example, called DFN, Direct Frame Number, direct frame number), and the corresponding period may also be called "DFN period" (denoted as T DFN_PERIOD ).
  • Each direct frame can contain A direct half frame (or half direct frame, or half direct frame, or half frame, half frame), in which the direct half frame number corresponding to each direct half frame is in the order of increasing time E.g,
  • Each direct frame can contain Direct subframes (direct subframes, or subframes, subframes), in which the direct subframe numbers corresponding to each direct subframe are sequentially ascending in time E.g,
  • Each direct half frame can contain Direct subframes, where the direct subframe number corresponding to each direct subframe is in increasing order of time as E.g,
  • the length (or duration) of a direct frame can be recorded as E.g,
  • the length (or duration) of a direct half frame can be recorded as E.g,
  • the length (or duration) of a direct subframe can be recorded as E.g,
  • the length of a direct time slot (or duration, denoted as ) Can be related to ⁇ .
  • ⁇ the length of a direct time slot (or duration, denoted as )
  • the SL synchronization process supports periodic SL SSB transmission, and the corresponding period may also be referred to as "SL SSB period" (denoted as T SLSSB ).
  • T SLSSB can also be indicated by pre-configuration or configuration information.
  • the number of SL SSB transfers in one SL SSB cycle (denoted as ) Can be a pre-defined value, or can be indicated by pre-configuration or configuration information. E.g,
  • T1 can be one of the following:
  • T2 can be one of the following:
  • T3 can be one of the following:
  • T4 can be one of the following:
  • the Each SL SSB can use the same transmission beam for transmission, or use different transmission beams for transmission.
  • Figure 2 is about the "DFN period" T DFN_PERIOD and "the number of SL SSB periods in the DFN period” And “the number of SL SSB transfers in the SL SSB cycle”
  • T DFN_PERIOD 10240 milliseconds
  • one SL transmission can occupy one or more OFDM symbols in one slot, or multiple slots (wherein each slot occupies one or more OFDM symbols).
  • SL timing information or information related to the frame structure, such as OFDM symbol boundaries, slot boundaries, sub-frame boundaries, half-frame boundaries, frame Boundary, the number of a given time slot in a subframe or half frame or frame, the number of a given subframe in a half frame or frame, the number of a given half frame in a frame, a given The number of the frame in the DFN period, etc.
  • SL time domain resources for example, for SL transmission, and/or for SL reception, and/or for AGC on SL, and/or for GP on SL, and/or for other Time domain resources related to SL usage
  • “higher layer” can refer to one or more protocol layers or protocol sublayers above the physical layer.
  • the MAC layer the RLC layer, the PC5 RRC layer, the PDCP layer, the RRC layer, and so on.
  • the "pre-configuration" information may be information pre-configured through higher layer protocols/signaling.
  • the "configuration" information may be information configured through a higher layer protocol/signaling.
  • ⁇ is the SCS configuration of the SL carrier.
  • all SL transmissions in one SL carrier use the same SCS configuration and/or the same CP.
  • ⁇ is the SCS configuration of SL BWP.
  • all SL transmissions in one SL BWP use the same SCS configuration and/or the same CP.
  • ⁇ is the SCS configuration of the resource pool.
  • all SL transmissions in a resource pool use the same SCS configuration and/or the same CP.
  • SL SSB may also be called candidate SL SSB, or SL SSB candidate.
  • SL SSB candidate on the time domain and/or frequency domain resources corresponding to a candidate SL SSB, there may or may not be SL SSB transmission.
  • SL SSB transmission on the time domain and/or frequency domain resources corresponding to one candidate SL SSB, there may be one or more SL SSBs transmitted by the UE.
  • SL SSB can only be used in "SL time slots" (for example, for SL transmission, and/or for SL reception, and/or for AGC on SL, and/or for GP on SL , And/or used for other SL-related purposes) on the time slot).
  • SL time slots for example, for SL transmission, and/or for SL reception, and/or for AGC on SL, and/or for GP on SL , And/or used for other SL-related purposes
  • the "SL time slot" can be a time slot configured to allow SL transmission; for example, on a carrier, part or all of the time slots can be configured as SL time slots; another example, on a carrier, part or all of the time slots Time slots can be configured as UL time slots; another example, on a carrier, part or all of the time slots can be configured as DL time slots; another example, on a carrier, part or all of the time slots can be configured as FL (flexible) Slot; another example, on a carrier, part or all of the time slots can be configured as reserved time slots.
  • Fig. 3 is a flowchart showing a method executed by a user equipment according to the first embodiment of the present invention.
  • the steps performed by the user equipment UE include: step S101 and step S103.
  • step S101 the synchronization source priority indication information is obtained.
  • the synchronization source may be a UE (referred to as SyncRefUE), and the "synchronization source priority indication information" may be indicated by the SL SSB transmitted by the SyncRef UE. among them,
  • the SL SSB may include SL PSS, SL SSS, and PSBCH.
  • the "receiving SL SSB" may refer to receiving part or all of the SL SSB.
  • receiving SL PSS may refer to receiving SL PSS.
  • Another example is receiving SL PSS and SL SSS.
  • Another example is receiving SL PSS, SL SSS and PSBCH.
  • one or more of the following can be determined by receiving the SL SSB:
  • the total number of SL PSS sequences is 2.
  • the set of numbers of the SL PSS sequence is ⁇ 0, 1 ⁇ .
  • the total number of SL SSS sequences is 336.
  • the set of numbers of the SL SSS sequence is ⁇ 0, 1, ..., 335 ⁇ .
  • the total number of SL SSIDs is 672.
  • the value set of SL SSID can be ⁇ 0, 1, ..., 671 ⁇ .
  • the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
  • PSBCH payload PSBCH payload
  • the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • a PSBCH payload such as SL MIB
  • other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • the “receiving” can be replaced with “detection”.
  • the "synchronization source priority indication information" may indicate the set ⁇ UE synchronized directly to GNSS, UE synchronized indirectly to GNSS, synchronized directly to gNB/ eNB UE, indirectly synchronized to a value in gNB/eNB UE, other UE ⁇ .
  • the "other UE” may not include the "UE directly synchronized to GNSS” or the “indirectly synchronized to GNSS UE” does not include the "UE directly synchronized to the gNB/eNB", nor does it include the "UE synchronized indirectly to the gNB/eNB”.
  • the "other UE” may not include the "UE directly synchronized to GNSS” or the "indirectly synchronized to GNSS UE”.
  • GNSS UE may not include the "UE directly synchronized to GNSS” or the "indirectly synchronized to GNSS UE”.
  • the "synchronization source priority indication information" can indicate the set ⁇ synchronize directly to GNSS
  • the UE that is indirectly synchronized to the GNSS, the UE that is directly synchronized to the gNB/eNB, the UE that is indirectly synchronized to the gNB/eNB, and other UEs are a value in ⁇ . among them,
  • the "other UEs” may not include the "UEs that are directly synchronized to GNSS”, nor the “UEs that are synchronized indirectly to GNSS”, nor the "UEs that are synchronized directly to gNB/ eNB UE” does not include the "UE indirectly synchronized to gNB/eNB”.
  • the "synchronization source priority indication information" may indicate the set ⁇ synchronized to GNSS UE, the UE synchronized to the gNB/eNB, other UE). among them,
  • the "UE synchronized to GNSS” may be a UE synchronized to GNSS directly or indirectly.
  • the "UE synchronized to gNB/eNB” may be a UE synchronized to gNB/eNB directly or indirectly.
  • the "other UE” may not include the "UE synchronized to the GNSS", nor the "UE synchronized to the gNB/eNB”.
  • the "synchronization source priority indication information" may indicate the set ⁇ direct synchronized UE , Indirectly synchronized UE, a value in other UE ⁇ . among them,
  • the "directly synchronized UE” may be a UE directly synchronized to GNSS or a UE directly synchronized to gNB/eNB.
  • the "indirectly synchronized UE” may be a UE that is indirectly synchronized to GNSS or a UE that is indirectly synchronized to a gNB/eNB.
  • the "other UE” may not include the "directly synchronized UE” or the "indirectly synchronized UE”.
  • the "synchronization source priority indication information" may indicate the set ⁇ synchronize directly to GNSS UE, indirectly synchronized to GNSS UE, a value in other UE ⁇ . among them,
  • the "other UE” may not include the "UE directly synchronized to the GNSS", nor the "UE synchronized to the GNSS indirectly”.
  • the "other UEs” may not include the "UEs that are directly synchronized to GNSS”, nor the “UEs that are synchronized indirectly to GNSS”, nor the "UEs that are synchronized directly to gNB/ eNB UE” does not include the "UE indirectly synchronized to gNB/eNB”.
  • the "synchronization source priority indication information" can indicate the set ⁇ direct synchronization to the gNB/eNB UE, indirect synchronization to the gNB/eNB UE , The UE directly synchronized to GNSS, indirectly synchronized to the GNSS UE, a value in other UE ⁇ . among them,
  • the "other UE” may not include the "UE directly synchronized to the gNB/eNB", nor the “UE synchronized to the gNB/eNB indirectly”, nor the “directly synchronized UE”.
  • “UE synchronized to GNSS” does not include the "UE indirectly synchronized to GNSS”.
  • the "synchronization source priority indication information" can indicate the set ⁇ UE synchronized to gNB/eNB, UE synchronized to GNSS, other UE ⁇ A value in. among them,
  • the "UE synchronized to gNB/eNB” may be a UE synchronized to gNB/eNB directly or indirectly.
  • the "UE synchronized to GNSS” may be a UE synchronized to GNSS directly or indirectly.
  • the "other UE” may not include the "UE synchronized to the gNB/eNB", nor the "UE synchronized to the GNSS”.
  • the "synchronization source priority indication information" can indicate a value in the set ⁇ direct synchronization UE, indirect synchronization UE, other UE ⁇ . among them,
  • the "directly synchronized UE” may be a UE directly synchronized to a gNB/eNB or a UE directly synchronized to a GNSS.
  • the "indirectly synchronized UE” may be a UE that is indirectly synchronized to a gNB/eNB or a UE that is indirectly synchronized to a GNSS.
  • the "other UE” may not include the "directly synchronized UE” or the "indirectly synchronized UE”.
  • the "synchronization source priority indication information" can be represented by 1 bit, or by 2 bits, or by 3 bits, or by 4 bits.
  • one or more bits (including all bits) of the "synchronization source priority indication information" may be included in the payload of the PSBCH.
  • one or more bits (including all bits) of the "synchronization source priority indication information" may be included in the PSBCH payload (for example, SL MIB) generated by the higher layer.
  • one or more bits (including all bits) of the "synchronization source priority indication information" may be included in other PSBCH payloads (such as those generated by the physical layer) except the PSBCH payload generated by the higher layer. PSBCH payload).
  • one or more bits (including all bits) of the "synchronization source priority indication information" can be coded jointly with other indication information in the PSBCH payload.
  • a part of the bits in the PSBCH payload is not only used to indicate the "synchronization source priority indication information", but also used to indicate other indication information.
  • one or more bits (including all bits) of the "synchronization source priority indication information" may be indicated by the value of the SL SSID.
  • the value of the SL SSID one of N predefined or pre-configured or configured SL SSID sets (denoted as S 0 , S 1 ,..., S N-1 ) (denoted as S i , The possible values of i are 0, 1, ..., N-1), and then the "synchronization source priority indication information" is determined according to the SL SSID set S i (or according to the determined i). among them,
  • the N SL SSID sets S 0 , S 1 , ..., S N-1 do not intersect each other (or do not overlap each other).
  • the determination criterion SL SSID set S i is the value of the SL SSID SL SSID belonging to the set (or the value of SL SSID in the SL SSID set in S i) S i.
  • the value of the SL SSID does not belong to any other set except S i among S 0 , S 1 , ..., S N-1.
  • the union of S 1 , S 2 ,..., S N (S 0 +S 1 +...+S N-1 ) may be equal to the set S, or may be the union of the set S A subset.
  • N can be a predefined value.
  • N 3.
  • N 5.
  • N 3.
  • one or more of S 0 , S 1 ,..., S N-1 may be a predefined set.
  • the definition of one or more of S 0 , S 1 , ..., S N-1 is determined by one or more configuration or pre-configuration information.
  • S 1 or pre-configured in the configuration definition at the GNSS-based synchronization when the synchronization may be different from the definition in the S 1 or pre-configured based on the configuration gNB / eNB's.
  • each of S 0 , S 1 , ..., S N-1 respectively contains one or more SL SSIDs.
  • each of S 0 , S 1 , ..., S N-1 corresponds to a value in the value set of the "synchronization source priority indication information".
  • S 0 corresponds to the synchronization source with the highest priority in the value set of the "synchronization source priority indication information”; for another example, S 1 corresponds to the second highest priority in the value set of the "synchronization source priority indication information" Priority synchronization source; ...; S N-1 corresponds to the lowest priority synchronization source in the value set of the "synchronization source priority indication information"; and so on. among them,
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • S 0 corresponds to "UE directly synchronized to GNSS”
  • S 1 corresponds to "indirect synchronization”
  • S 2 corresponds to "UE directly synchronized to gNB/eNB”
  • S 3 corresponds to "UE synchronized to gNB/eNB indirectly”
  • S 4 corresponds to "other UE”.
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • S 0 corresponds to "UE synchronized to GNSS”
  • S 1 corresponds to "Sync to gNB /eNB's UE”
  • S 2 corresponds to "other UE”.
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • S 0 corresponds to "directly synchronized UE”
  • S 1 corresponds to "indirectly synchronized UE”
  • S 2 corresponds to "other UE”.
  • S 0 corresponds to "UE directly synchronized to gNB/eNB”
  • S 1 corresponds to "UE synchronized to gNB/eNB indirectly”
  • S 2 corresponds to "UE directly synchronized to GNSS”
  • S 3 corresponds to "UE synchronized to GNSS indirectly”
  • S 4 corresponds to "other UE”.
  • S 0 corresponds to "UE synchronized to gNB/eNB”
  • S 1 corresponds to "UE synchronized to GNSS”
  • S 2 corresponds to "other UE” .
  • S 0 corresponds to "directly synchronized UE”
  • S 1 corresponds to "indirectly synchronized UE”
  • S 2 corresponds to "other UE”.
  • one or more bits (including all bits) of the "synchronization source priority indication information" can be coded jointly with other indication information indicated by the SL SSID.
  • the SL SSID is not only used to indicate the "synchronization source priority indication information", but also used to indicate other indication information.
  • a part of the "synchronization source priority indication information" is indicated by the PSBCH payload, and the other part is indicated by the SL SSID.
  • step S103 the priority of the synchronization source is determined according to the "synchronization source priority indication information".
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • the "synchronization source priority indication information” indicates "UE directly synchronized to GNSS”
  • the priority of the synchronization source is P0 (see Table 1).
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • the "synchronization source priority indication information" indicates "UE synchronized to GNSS”
  • the priority of the synchronization source is P1 or P2 (see Table 1).
  • other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P2.
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is to define a synchronization source based on gNB/eNB
  • the "synchronization source priority indication information" indicates "directly synchronized UE”
  • the priority of the synchronization source is P1 or P4 (see Table 1).
  • other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P4.
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is not to define a synchronization source based on gNB/eNB
  • the "synchronization source priority indication information" indicates "UE indirectly synchronized to GNSS”
  • the priority of the synchronization source is P2 (see Table 1).
  • the configuration or pre-configuration is GNSS-based synchronization
  • the configuration or pre-configuration is not to define a synchronization source based on gNB/eNB
  • the "synchronization source priority indication information" indicates "other UEs”
  • the priority of the synchronization source is P6 (see Table 1).
  • the priority of the synchronization source is P4 (see Table 1).
  • the priority of the synchronization source is P1 or P2 (See Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P2.
  • the priority of the synchronization source is P1 or P4 (see Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P4.
  • the priority of the synchronization source is indicated in the SL SSB, especially the value of the SL SSID, so that the UE can determine the synchronization source that is being detected and/or received as early as possible in the process of searching for the synchronization source Priority, reducing the time to determine the synchronization source.
  • Fig. 4 is a flowchart showing a method executed by a user equipment according to the second embodiment of the present invention.
  • the steps performed by the user equipment UE include: step S201 and step S203.
  • step S201 SL timing indication information is acquired.
  • the "SL timing indication information" is indicated by SL SSB. among them,
  • the SL SSB is transmitted by one UE (called SyncRef UE).
  • the SL SSB may include SL PSS, SL SSS, and PSBCH.
  • the "receiving SL SSB" may refer to receiving part or all of the SL SSB.
  • receiving SL PSS may refer to receiving SL PSS.
  • Another example is receiving SL PSS and SL SSS.
  • Another example is receiving SL PSS, SL SSS and PSBCH.
  • one or more of the following can be determined by receiving the SL SSB:
  • the total number of SL PSS sequences is 2.
  • the set of numbers of the SL PSS sequence is ⁇ 0, 1 ⁇ .
  • the total number of SL SSS sequences is 336.
  • the set of numbers of the SL SSS sequence is ⁇ 0, 1, ..., 335 ⁇ .
  • the total number of SL SSIDs is 672.
  • the value set of SL SSID can be ⁇ 0, 1, ..., 671 ⁇ .
  • the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
  • PSBCH payload PSBCH payload
  • the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • a PSBCH payload such as SL MIB
  • other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • the “receiving” can be replaced with “detection”.
  • one or more bits (including all bits) of the "SL timing indication information" may be included in the PSBCH payload. among them,
  • one or more bits (including all bits) of the "SL timing indication information" may be included in the PSBCH payload (for example, SL MIB) generated by the higher layer.
  • one or more bits (including all bits) of the "SL timing indication information" may be included in other PSBCH payloads except the PSBCH payload generated by the higher layer (for example, the PSBCH payload generated by the physical layer is valid). Load).
  • one or more bits (including all bits) of the "SL timing indication information" can be coded jointly with other indication information in the PSBCH payload.
  • a part of the bits in the PSBCH payload is not only used to indicate the "SL timing indication information", but also used to indicate other indication information.
  • one or more bits (including all bits) of the "SL timing indication information" may be indicated by a PSBCH transmission parameter (such as a DMRS sequence) included in the SL SSB.
  • a PSBCH transmission parameter such as a DMRS sequence
  • the "SL timing indication information" includes one or more of the following:
  • the "number of the SL SSB period in the DFN period" Can take set A value in.
  • the unit of T SLSSB is a frame.
  • the "SL SSB number in the SL SSB cycle" Can take set A value in.
  • the "SL SSB number in the DFN cycle" Can take set A value in.
  • the unit of T SLSSB is a frame.
  • step S203 SL timing information is determined. For example, determine the time domain information of the SL SSB. For another example, by determining the time domain information of the SL SSB, the SL timing information on the SL link is determined. among them,
  • the time domain information of the SL SSB may include one or more of the following:
  • n directframe n'directframe
  • n directframe n'directframe + ⁇ directframe
  • n directframe n'directframe- ⁇ directframe
  • ⁇ directframe can be a pre-defined or pre-configured or configured value.
  • the direct frame number may be the number of the direct frame in which the SL SSB is located in the DFN period.
  • the direct frame number can be set A value in.
  • n'directframe can be calculated in one of the following ways:
  • n directhalfframe n'directhalfframe
  • n directhalfframe n'directhalfframe + ⁇ directhalfframe
  • n directhalfframe n'directhalfframe- ⁇ directhalfframe
  • ⁇ directhalfframe can be a pre-defined or pre-configured or configured value.
  • the direct field number may be the number of the direct field in which the SL SSB is located in the direct frame.
  • the direct field number can be set A value in.
  • n′ directhalfframe can be calculated in one of the following ways:
  • n directsubframe n'directsubframe
  • n directsubframe n'directsubframe + ⁇ directsubframe
  • n directsubframe n'directsubframe- ⁇ directsubframe
  • ⁇ directsubframe can be a pre-defined or pre-configured or configured value.
  • the direct subframe number may be the number of the direct subframe in which the SL SSB is located in the direct half frame.
  • the direct subframe numbers can be set A value in.
  • n′ directsubframe can be calculated in one of the following ways:
  • the direct subframe number may be the number of the direct subframe in which the SL SSB is located in the direct frame.
  • the direct subframe numbers can be set A value in.
  • n′ directsubframe can be calculated in one of the following ways:
  • n directslot n'directslot
  • n directslot n'directslot + ⁇ directslot
  • n directslot n'directslot- ⁇ directslot . among them,
  • ⁇ directslot can be a pre-defined or pre-configured or configured value.
  • the direct slot number may be the number in the direct subframe of the direct slot in which the SL SSB is located.
  • the direct time slot number can be set A value in.
  • n′ directslot can be calculated in one of the following ways:
  • the direct slot number may be the number in the direct half-frame of the direct slot in which the SL SSB is located.
  • the direct time slot number can be set A value in.
  • n′ directslot can be calculated in one of the following ways:
  • the direct time slot number may be the number of the direct time slot in which the SL SSB is located in the direct frame.
  • the direct time slot number can be set A value in.
  • n′ directslot can be calculated in one of the following ways:
  • the SL timing information on the SL link may include one or more of the following:
  • said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of, Can be replaced with Or replace with Where, optionally, It can be a pre-defined or pre-configured or configured value.
  • said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of, Can be replaced with Or replace with Where, optionally, It can be a pre-defined or pre-configured or configured value.
  • said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of, Can be replaced with x, or with Where x is an arbitrary expression (where applicable).
  • x is an arbitrary expression (where applicable).
  • N Rep may be a predefined or pre-configured or configured value; optionally, N Rep represents the "number of repetitions" in the SL SSB period, for example, at this time, in the one SL SSB period of A SL SSB transmission can be repeated N Rep times (including the first time), that is, the total number of SL SSB transmissions in one SL SSB cycle can be
  • the "number of the SL SSB period in the DFN period” Can be determined by the "SL SSB number in the DFN cycle" determine.
  • the SL timing information is composed of the "number of the SL SSB period in the DFN period” And/or other information is further determined; optionally, the "SL timing indication information” does not include the "number of the SL SSB period in the DFN period”
  • the "SL timing indication information” includes the "SL SSB number in the DFN period”
  • the "SL SSB number in the SL SSB period" Can be determined by the "SL SSB number in the DFN cycle" determine.
  • the SL timing information is composed of the "number of the SL SSB period in the DFN period” And/or other information is further determined; optionally, the "SL timing indication information” does not include the "SL SSB number in the SL SSB period”
  • the "SL timing indication information” includes the "SL SSB number in the DFN period"
  • the unit of T SLSSB may be milliseconds.
  • T SLSSB 160 milliseconds.
  • the unit of T SLSSB may be a frame.
  • T SLSSB 16 frames.
  • the units of T SLSSB appearing in different places may be different.
  • the second embodiment of the present invention uses the rule that SSB appears in the DFN period to indicate the information of the corresponding SSB in the DFN period in the SL MIB and/or PSBCH payload and/or PSBCH transmission parameters, so that the UE can
  • the DFN is derived from the information of the SSB in the DFN period, instead of directly indicating complete DFN information in the SL MIB (for example, a value of 0 to 1023, 10 bits are required), which improves the efficiency of time domain information indication.
  • Fig. 5 is a flowchart showing a method executed by a user equipment according to the third embodiment of the present invention.
  • the steps performed by the user equipment UE include: step S301 and step S303.
  • step S301 the SL time domain resource indication information is obtained.
  • the "SL time domain resource indication information" is indicated by SL SSB. among them,
  • the SL SSB is transmitted by one UE (called SyncRef UE).
  • the SL SSB may include SL PSS, SL SSS, and PSBCH.
  • the "receiving SL SSB" may refer to receiving part or all of the SL SSB.
  • receiving SL PSS may refer to receiving SL PSS.
  • Another example is receiving SL PSS and SL SSS.
  • Another example is receiving SL PSS, SL SSS and PSBCH.
  • one or more of the following can be determined by receiving the SL SSB:
  • the total number of SL PSS sequences is 2.
  • the set of numbers of the SL PSS sequence is ⁇ 0, 1 ⁇ .
  • the total number of SL SSS sequences is 336.
  • the set of numbers of the SL SSS sequence is ⁇ 0, 1, ..., 335 ⁇ .
  • the total number of SL SSIDs is 672.
  • the value set of SL SSID can be ⁇ 0, 1, ..., 671 ⁇ .
  • the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
  • PSBCH payload PSBCH payload
  • the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • a PSBCH payload such as SL MIB
  • other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
  • the “receiving” can be replaced with “detection”.
  • one or more bits (including all bits) of the "SL time domain resource indication information" may be included in the PSBCH payload. among them,
  • one or more bits (including all bits) of the "SL time domain resource indication information" may be included in the PSBCH payload (for example, including SL MIB) generated by a higher layer.
  • one or more bits (including all bits) of the "SL time domain resource indication information" may be included in other PSBCH payloads (such as those generated by the physical layer) except for the PSBCH payload generated by the higher layer. PSBCH payload).
  • one or more bits (including all bits) of the "SL time domain resource indication information" can be coded jointly with other indication information in the PSBCH payload.
  • a part of the bits in the PSBCH payload is not only used to indicate the "SL time domain resource indication information", but also used to indicate other indication information.
  • one or more bits (including all bits) of the "SL time domain resource indication information" may be indicated by a PSBCH transmission parameter (for example, a DMRS sequence) included in the SL SSB.
  • a PSBCH transmission parameter for example, a DMRS sequence
  • the "SL time domain resource indication information" can be represented by I TD bits. among them,
  • I TD can be pre-defined as a value in the set R1, or pre-configured or configured as a value in the set R1, or pre-configured or configured as a value in any subset of the set R1 value.
  • the set R1 may be one of the following:
  • the "SL time domain resource indication information" can be set A value in R2, or a value in any subset of the set R2.
  • the "SL time domain resource indication information" is an index to the SL time domain resource configuration information list. among them,
  • the "SL time domain resource configuration information list" can contain at most N TD, max items SL time domain resource configuration information (or in other words, the maximum length of the "SL time domain resource configuration information list” can be N TD, max ). among them,
  • N TD, max can be pre-defined as a value in the set R3, or pre-configured or configured as a value in the set R3, or pre-configured or configured as any subset of the set R3 A value of.
  • the set R3 may be one of the following:
  • each item of SL time domain resource configuration information in the "SL time domain resource configuration information list" may include one or more of the following:
  • the unit of the size (or width or length, denoted as B SL ) of the SL time slot bitmap may be bits.
  • the size of the SL time slot bitmap can be pre-defined as a value in the set R4, or configured or pre-configured as a value in the set R4, or pre-configured or configured as the set R4 A value in any subset of.
  • the set R4 may be one of the following:
  • the value or value set of the size of the SL time slot bitmap may be related to the subcarrier interval and/or CP length configured by the corresponding SL link or SL carrier or SL BWP or resource pool.
  • different subcarrier intervals and/or CP lengths correspond to different values or value sets of the size of the SL time slot bitmap.
  • the value of the SL start OFDM symbol is the number of the OFDM symbol in one slot.
  • the SL start OFDM symbol may be predefined as any value in the set R5, or configured or pre-configured as a value in any subset of the set R5. among them,
  • the set R5 may be equal to ⁇ 1, 2, ..., 13 ⁇ .
  • the set R5 may be equal to ⁇ 1, 2, ..., 11 ⁇ .
  • the value or value set of the SL start OFDM symbol may be related to the subcarrier interval and/or CP length configured by the SL carrier.
  • different subcarrier intervals and/or CP lengths correspond to different values or value sets of the SL starting OFDM symbols.
  • the value of the SL ending OFDM symbol is the number of the OFDM symbol in one slot.
  • the SL end OFDM symbol may be predefined as any value in the set R6, or configured or pre-configured as a value in any subset of the set R6. among them,
  • the set R6 may be equal to ⁇ 1, 2, ..., 13 ⁇ .
  • the set R6 may be equal to ⁇ 1, 2, ..., 11 ⁇ .
  • the value or value set of the SL ending OFDM symbol may be related to the subcarrier interval and/or CP length configured by the SL carrier.
  • different subcarrier intervals and/or CP lengths correspond to different values or value sets of SL ending OFDM symbols.
  • T SL time domain resource period
  • the unit of the SL time domain resource period may be one or more symbols.
  • the unit of the SL time domain resource period may be one or more time slots.
  • the unit of the SL time domain resource period may be one or more subframes.
  • the unit of the SL time domain resource period may be one or more frames.
  • the unit of the SL time domain resource period may be one or more milliseconds.
  • the unit of the SL time domain resource period may be one or more seconds.
  • the SL time domain resource period may be related to the "SL SSB period" T SLSSB .
  • T SL k 1 ⁇ T SLSSB , where k 1 is an integer, or 1/k 1 is an integer.
  • the SL time domain resource period may be related to the size B SL of the SL time slot bitmap.
  • T SL k 2 ⁇ B SL , where k 2 is an integer.
  • the non-integer value is only applicable when the unit of the SL time domain resource period is milliseconds or seconds.
  • the value set of the SL time domain resource period may be related to the subcarrier interval and/or CP length configured by the SL carrier.
  • different subcarrier intervals and/or CP lengths correspond to different values or value sets of SL time domain resource periods.
  • the unit of the SL time domain resource offset may be one or more symbols.
  • the unit of the SL time domain resource offset may be one or more time slots.
  • the unit of the SL time domain resource offset may be one or more subframes.
  • the unit of the SL time domain resource offset may be one or more frames.
  • the unit of the SL time domain resource offset may be one or more milliseconds.
  • the unit of the SL time domain resource offset may be one or more seconds.
  • step S303 the SL time domain resource is determined.
  • an item in the SL time domain resource configuration information list is determined according to the "SL time domain resource indication information" (for example, the index of the SL time domain resource configuration information list). For example, if the value of the index is 0, the determined SL time domain resource configuration information is the first item of the SL time domain resource configuration information list.
  • SL time domain resource indication information for example, the index of the SL time domain resource configuration information list.
  • the SL time domain resource is determined according to the determined SL time domain resource configuration information. For example, starting from the time slot n s that satisfies the SL condition, the SL time slot bitmap is applied. among them,
  • ⁇ D may be the value represented by the "SL time domain resource offset" D SL in units of time slots.
  • ⁇ T may be the value represented by the "SL time domain resource period" T SL in units of time slots.
  • the "applying the SL time slot bitmap" may be determining the time slot corresponding to the bit with the value "1" in the SL time slot bitmap as the SL time slot. among them,
  • the set of OFDM symbols used for the SL may be ⁇ n starting , n starting +1, ..., n ending ⁇ .
  • the "application of the SL time slot bitmap" can start from the most significant bit of the SL time slot bitmap, or it can start from the least significant bit of the SL time slot bitmap.
  • the "used for SL” may be used for SL transmission, or for SL reception, or for AGC on SL, or for GP on SL, or For other purposes related to SL.
  • the SL time domain resource configuration information list is indicated in the pre-configuration or configuration information, and an index of the SL time domain resource configuration information list is indicated in the SL SSB, thus ensuring the SL time domain.
  • the flexibility of resource configuration greatly reduces the signaling overhead in the SL SSB.
  • FIG. 6 is used to illustrate a user equipment that can execute the method executed by the user equipment described in detail above in the present invention as a modified example.
  • Fig. 6 is a block diagram showing a user equipment UE related to the present invention.
  • the user equipment UE40 includes a processor 401 and a memory 402.
  • the processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like.
  • the memory 402 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memories.
  • the memory 402 stores program instructions. When the instruction is executed by the processor 401, it can execute the above-mentioned method executed by the user equipment described in detail in the present invention.
  • the method and related equipment of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the method shown above is only exemplary, and the various embodiments described above can be combined with each other without contradiction.
  • the method of the present invention is not limited to the steps and sequence shown above.
  • the network nodes and user equipment shown above may include more modules, for example, may also include modules that can be developed or that can be developed in the future and can be used for base stations, MMEs, or UEs, and so on.
  • the various identifiers shown above are only exemplary rather than restrictive, and the present invention is not limited to specific information elements as examples of these identifiers. Those skilled in the art can make many changes and modifications based on the teaching of the illustrated embodiment.
  • the foregoing embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Device, application specific integrated circuit (ASIC), field programmable gate array (FPGA), programmable logic device (CPLD), etc.
  • DSP digital signal processing
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • CPLD programmable logic device
  • base station may refer to a mobile communication data and control switching center with a certain transmission power and a certain coverage area, including functions such as resource allocation and scheduling, data reception and transmission.
  • User equipment may refer to a user's mobile terminal, for example, including mobile phones, notebooks, and other terminal devices that can communicate with base stations or micro base stations wirelessly.
  • the embodiments of the present invention disclosed herein can be implemented on a computer program product.
  • the computer program product is a product that has a computer-readable medium with computer program logic encoded on the computer-readable medium, and when executed on a computing device, the computer program logic provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of the computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • This arrangement of the present invention is typically provided as software, code and/or other data structures arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk or hard disk, or as software, code and/or other data structures such as one or more Firmware or microcode on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules.
  • Software or firmware or such a configuration may be installed on a computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
  • each functional module or each feature of the base station equipment and terminal equipment used in each of the foregoing embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits.
  • Circuits designed to perform the functions described in this specification can include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC) or general-purpose integrated circuits, field programmable gate arrays (FPGA), or other Programming logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above devices.
  • the general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine.
  • the above-mentioned general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit.
  • the present invention can also use integrated circuits obtained by using this advanced technology.

Abstract

Provided are a method executed by a user equipment (UE), characterized by comprising: acquiring synchronization source priority indication information from another UE serving as a synchronization source; and determining the priority of the synchronization source according to the acquired synchronization source priority indication information.

Description

由用户设备执行的方法以及用户设备Method executed by user equipment and user equipment 技术领域Technical field
本发明涉及一种由用户设备执行的方法以及用户设备。The present invention relates to a method executed by a user equipment and a user equipment.
背景技术Background technique
在NR SL(以及基于NR SL的5G V2X，参见非专利文献4)中定义了多个同步源，其中每个同步源对应一个优先级。正在进行同步的UE如何确定相应同步源的优先级，是一个需要解决的问题。Multiple synchronization sources are defined in NR SL (and 5G V2X based on NR SL, see Non-Patent Document 4), and each synchronization source corresponds to a priority. How to determine the priority of the corresponding synchronization source for the UE that is synchronizing is a problem that needs to be solved.
另外，在NR SL中，对于正在进行同步的UE，如何通过同步源提供的信息确定SL定时信息，也是一个需要解决的问题。In addition, in NR SL, how to determine the SL timing information based on the information provided by the synchronization source for the UE that is synchronizing is also a problem that needs to be solved.
另外，如何确定SL时域资源，也是一个需要解决的问题。In addition, how to determine SL time domain resources is also a problem that needs to be solved.
在先技术文献Prior Art Literature
非专利文献Non-patent literature
非专利文献1：RP-152293，New WI proposal：Support for V2V services based on LTE sidelinkNon-Patent Document 1: RP-152293, New WI proposal: Support for V2V services based on LTE sidelink
非专利文献2：RP-170798，New WID on 3GPP V2X Phase 2Non-Patent Document 2: RP-170798, New WID on 3GPP V2X Phase 2
非专利文献3：RP-170855，New WID on New Radio Access TechnologyNon-Patent Document 3: RP-170855, New WID on New Radio Access Technology
非专利文献4：RP-190766，New WID on 5G V2X with NR sidelinkNon-Patent Document 4: RP-190766, New WID on 5G V2X with NR sidelink
发明内容Summary of the invention
为了解决上述问题中的至少一部分，本发明提供了一种由用户设备执行的方法以及用户设备，使得UE在搜寻同步源的过程中尽早确定正在检测和/或接收的同步源的优先级，减小了确定同步源的时间。In order to solve at least a part of the above-mentioned problems, the present invention provides a method executed by a user equipment and a user equipment, so that the UE determines the priority of the synchronization source being detected and/or received as early as possible during the process of searching for the synchronization source, and reduces The time to determine the synchronization source is small.
根据本发明，提出了一种由用户设备UE执行的方法，其特征在于包括：从作为同步源的另一UE获取同步源优先级指示信息；以及根据获取的所述同步源优先级指示信息，确定所述同步源的优先级。According to the present invention, a method performed by a user equipment UE is proposed, which is characterized by including: obtaining synchronization source priority indication information from another UE as a synchronization source; and according to the obtained synchronization source priority indication information, Determine the priority of the synchronization source.
优选地，若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，直接同步到基站的UE，间接同步到基站的UE，其他UE}中的一个值。Preferably, if it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {direct synchronization to GNSS UE, Indirectly synchronized to the GNSS UE, directly synchronized to the base station UE, indirectly synchronized to the base station UE, other UE}.
优选地，若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{同步到GNSS的UE，同步到基站的UE，其他UE}中的一个值。Preferably, if it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {UE synchronized to GNSS, synchronization A value in the UE to the base station, other UE}.
优选地，若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。Preferably, if it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {direct synchronized UE, indirect synchronization UE, other UE}.
优选地，若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为不使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。Preferably, if it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to not use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {UE directly synchronized to the GNSS , Indirectly synchronized to the GNSS UE, a value in other UE}.
优选地，若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指示集合{直接同步到基站的UE，间接同步到基站的UE，直接同步到全球导航卫星系统GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。Preferably, if the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indication set {UE directly synchronized to the base station, UE indirectly synchronized to the base station, and directly synchronized to the global navigation satellite system GNSS UE , Indirectly synchronized to the GNSS UE, a value in other UE}.
优选地，若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指示集合{同步到基站的UE，同步到全球导航卫星系统GNSS的UE，其他UE}中的一个值。Preferably, if the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indicates a value in the set {UE synchronized to the base station, UE synchronized to the global navigation satellite system GNSS, other UE}.
优选地，若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。Preferably, if the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indicates a value in the set {directly synchronized UE, indirectly synchronized UE, other UE}.
优选地，所述同步源优先级指示信息由物理直行广播信道PSBCH的有效载荷和/或直行同步信号标识SL SSID指示。Preferably, the synchronization source priority indication information is indicated by the payload of the physical direct broadcast channel PSBCH and/or the direct synchronization signal identifier SL SSID.
为了解决上述问题中的至少一部分，本发明还提供了一种由用户设备执行的方法以及用户设备，使得UE可以从所述SSB在DFN周期内的信息中推导出DFN，而不需要直接在SL MIB中指示完整的DFN信息，提高了时域信息指示的效率。In order to solve at least a part of the above-mentioned problems, the present invention also provides a method executed by a user equipment and a user equipment, so that the UE can derive the DFN from the information of the SSB in the DFN period, without directly logging in the SL The MIB indicates complete DFN information, which improves the efficiency of time domain information indication.
根据本发明，提出了一种由用户设备UE执行的方法，其特征在于包 括：获取SL定时指示信息；以及根据所获取的定时指示信息，确定SL定时信息。According to the present invention, a method executed by a user equipment UE is proposed, which is characterized by including: acquiring SL timing indication information; and determining SL timing information according to the acquired timing indication information.
为了解决上述问题中的至少一部分，本发明还提供了一种由用户设备执行的方法以及用户设备，既确保了SL时域资源配置的灵活性，又极大减少了SL SSB中的信令开销。In order to solve at least part of the above-mentioned problems, the present invention also provides a method executed by user equipment and user equipment, which not only ensures the flexibility of SL time domain resource configuration, but also greatly reduces the signaling overhead in SL SSB. .
根据本发明，提出了一种由用户设备UE执行的方法，其特征在于包括：获取SL时域资源指示信息；以及根据所获取的时域资源指示信息，确定SL时域资源。According to the present invention, a method executed by a user equipment UE is provided, which is characterized by including: obtaining SL time domain resource indication information; and determining the SL time domain resource according to the obtained time domain resource indication information.
此外，根据本发明，提出了一种用户设备，其特征在于，包括：处理器；以及存储器，存储有指令，其中，所述指令在由所述处理器运行时执行上述的方法。In addition, according to the present invention, a user equipment is provided, which is characterized by comprising: a processor; and a memory storing instructions, wherein the instructions execute the above-mentioned method when run by the processor.
根据本发明，使得UE在搜寻同步源的过程中尽早确定正在检测和/或接收的同步源的优先级，减小了确定同步源的时间。According to the present invention, the UE is enabled to determine the priority of the synchronization source being detected and/or received as early as possible in the process of searching for the synchronization source, and the time for determining the synchronization source is reduced.
根据本发明，使得UE可以从所述SSB在DFN周期内的信息中推导出DFN，而不需要直接在SL MIB中指示完整的DFN信息，提高了时域信息指示的效率。According to the present invention, the UE can derive DFN from the information of the SSB in the DFN period without directly indicating complete DFN information in the SL MIB, which improves the efficiency of time domain information indication.
根据本发明，既确保了SL时域资源配置的灵活性，又极大减少了SL SSB中的信令开销。According to the present invention, the flexibility of SL time domain resource configuration is ensured, and the signaling overhead in the SL SSB is greatly reduced.
附图说明Description of the drawings
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：The above and other features of the present invention will become more apparent through the following detailed description in conjunction with the accompanying drawings, among which:
图1示出了对直接帧、直接半帧、直接子帧和直接时隙等的划分和编号的一个例子。Figure 1 shows an example of the division and numbering of direct frames, direct half-frames, direct subframes, and direct time slots.
图2示出了关于“DFN周期”、“DFN周期内的SL SSB周期的个数”和“SL SSB周期内的SL SSB传输的个数”之间的关系的一个例子。FIG. 2 shows an example of the relationship between "DFN period", "number of SL SSB periods in DFN period", and "number of SL SSB transmissions in SL SSB period".
图3示出了根据本发明的实施例一的由用户设备执行的方法的流程图。Fig. 3 shows a flowchart of a method executed by a user equipment according to the first embodiment of the present invention.
图4示出了根据本发明的实施例二的由用户设备执行的方法的流程 图。Fig. 4 shows a flowchart of a method executed by a user equipment according to the second embodiment of the present invention.
图5示出了根据本发明的实施例三的由用户设备执行的方法的流程图。Fig. 5 shows a flowchart of a method executed by a user equipment according to the third embodiment of the present invention.
图6示出了本发明所涉及的用户设备UE的框图。Fig. 6 shows a block diagram of the user equipment UE involved in the present invention.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。The present invention will be described in detail below in conjunction with the drawings and specific implementations. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies that are not directly related to the present invention are omitted to prevent confusion in the understanding of the present invention.
下文以5G移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本发明的多个实施方式。然而，需要指出的是，本发明不限于以下实施方式，而是可适用于更多其它的无线通信系统，例如5G之后的通信系统以及5G之前的4G移动通信系统等。Hereinafter, taking the 5G mobile communication system and its subsequent evolved versions as an example application environment, multiple embodiments according to the present invention are described in detail. However, it should be pointed out that the present invention is not limited to the following embodiments, but is applicable to more other wireless communication systems, such as communication systems after 5G and 4G mobile communication systems before 5G.
下面描述本发明涉及的部分术语，如未特别说明，本发明涉及的术语采用此处定义。本发明给出的术语在LTE、LTE-Advanced、LTE-Advanced Pro、NR以及之后的通信系统中可能采用不同的命名方式，但本发明中采用统一的术语，在应用到具体的系统中时，可以替换为相应系统中采用的术语。The following describes some terms related to the present invention. Unless otherwise specified, the terms related to the present invention are defined here. The terminology given in the present invention may adopt different naming methods in LTE, LTE-Advanced, LTE-Advanced Pro, NR and later communication systems, but a unified terminology is used in the present invention. When applied to a specific system, It can be replaced with terms used in the corresponding system.
3GPP：3rd Generation Partnership Project，第三代合作伙伴计划3GPP: 3rd Generation Partnership Project, the third generation partnership project
AS：Access Stratum，接入层AS: Access Stratum, access layer
BWP：Bandwidth Part，带宽片段BWP: Bandwidth Part, Bandwidth Part
CA：Carrier Aggregation，载波聚合CA: Carrier Aggregation, carrier aggregation
CCE：control-channel element，控制信道元素CCE: control-channel element, control channel element
CORESET：control-resource set，控制资源集CORESET: control-resource set, control resource set
CP：Cyclic Prefix，循环前缀CP: Cyclic Prefix, cyclic prefix
CP-OFDM：Cyclic Prefix Orthogonal Frequency Division Multiplexing，循环前缀正交频分复用CP-OFDM: Cyclic Prefix Orthogonal Frequency Division Multiplexing, Cyclic Prefix Orthogonal Frequency Division Multiplexing
CRB：Common Resource Block，公共资源块CRB: Common Resource Block, common resource block
CRC：Cyclic Redundancy Check，循环冗余校验CRC: Cyclic Redundancy Check, cyclic redundancy check
CSI：Channel-state Information，信道状态信息CSI: Channel-state Information, channel state information
CSS：Common Search Space，公共搜索空间CSS: Common Search Space, public search space
DC：Dual Connectivity，双连接DC: Dual Connectivity, dual connection
DCI：Downlink Control Information，下行控制信息DCI: Downlink Control Information, downlink control information
DFN：Direct Frame Number，直接帧号DFN: Direct Frame Number, direct frame number
DFT-s-OFDM：Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing，离散傅里叶变换扩频正交频分复用DFT-s-OFDM: Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing
DL：Downlink，下行DL: Downlink, down
DL-SCH：Downlink Shared Channel，下行共享信道DL-SCH: Downlink Shared Channel, downlink shared channel
DM-RS：Demodulation reference signal，解调参考信号DM-RS: Demodulation reference signal, demodulation reference signal
eMBB：Enhanced Mobile Broadband，增强的移动宽带通信eMBB: Enhanced Mobile Broadband, enhanced mobile broadband communications
eNB：E-UTRAN Node B，E-UTRAN节点BeNB: E-UTRAN Node B, E-UTRAN Node B
E-UTRAN：Evolved UMTS Terrestrial Radio Access Network，演进的UMTS陆地无线接入网E-UTRAN: Evolved UMTS Terrestrial Radio Access Network, the evolved UMTS terrestrial radio access network
FDD：Frequency Division Duplex，频分双工FDD: Frequency Division Duplex, Frequency Division Duplex
FDRA：Frequency Domain Resource Assignment，频域资源分配FDRA: Frequency Domain Resource Assignment, frequency domain resource allocation
FR1：Frequency Range 1，频率范围1FR1: Frequency Range 1, frequency range 1
FR2：Frequency Range 1，频率范围2FR2: Frequency Range 1, Frequency range 2
GLONASS：GLObal NAvigation Satellite System，全球导航卫星系统GLONASS: GLObal NAvigation Satellite System, Global Navigation Satellite System
gNB：NR Node B，NR节点BgNB: NR Node B, NR Node B
GNSS：Global Navigation Satellite System，全球导航卫星系统GNSS: Global Navigation Satellite System, Global Navigation Satellite System
GPS：Global Positioning System，全球定位系统GPS: Global Positioning System, Global Positioning System
HARQ：Hybrid Automatic Repeat Request，混合自动重复请求HARQ: Hybrid Automatic Repeat Request, hybrid automatic repeat request
ID：Identity(或者Identifier)，身份，标识符ID: Identity (or Identifier), identity, identifier
IE：Information Element，信息元素IE: Information Element, information element
IP：Internet Protocol，网际协议IP: Internet Protocol, Internet Protocol
LCID：Logical Channel ID，逻辑信道标识符LCID: Logical Channel ID, logical channel identifier
LTE：Long Term Evolution，长期演进LTE: Long Term Evolution, long-term evolution
LTE-A：Long Term Evolution-Advanced，长期演进-升级版LTE-A: Long Term Evolution-Advanced, Long Term Evolution-Upgraded Version
MAC：Medium Access Control，介质访问控制MAC: Medium Access Control, medium access control
MAC CE：MAC Control Element，MAC控制元素MAC CE: MAC Control Element, MAC control element
MCG：Master Cell Group，主小区组MCG: Master Cell Group, master cell group
MIB：Master Information Block，主信息块MIB: Master Information Block, master information block
MIB-SL：Master Information Block-Sidelink，主信息块-直行MIB-SL: Master Information Block-Sidelink, master information block-go straight
MIB-SL-V2X：Master Information Block-Sidelink-V2X，主信息块-直行-V2XMIB-SL-V2X: Master Information Block-Sidelink-V2X, master information block-straight-going-V2X
MIB-V2X：Master Information Block-V2X，主信息块-V2XMIB-V2X: Master Information Block-V2X, Master Information Block-V2X
mMTC：massive Machine Type Communication，大规模机器类通信mMTC: massive Machine Type Communication, large-scale machine type communication
NAS：Non-Access-Stratum，非接入层NAS: Non-Access-Stratum, non-access layer
NDI：New Data Indicator，新数据指示符NDI: New Data Indicator, new data indicator
NR：New Radio，新无线电NR: New Radio, New Radio
NUL：Normal Uplink，正常上行NUL: Normal Uplink, normal uplink
OFDM：Orthogonal Frequency Division Multiplexing，正交频分复用OFDM: Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
PBCH：Physical Broadcast Channel，物理广播信道PBCH: Physical Broadcast Channel, physical broadcast channel
PDCCH：Physical Downlink Control Channel，物理下行控制信道PDCCH: Physical Downlink Control Channel, physical downlink control channel
PDCP：Packet Data Convergence Protocol，分组数据汇聚协议PDCP: Packet Data Convergence Protocol, packet data convergence protocol
PDSCH：Physical Downlink Shared Channel，物理下行共享信道PDSCH: Physical Downlink Shared Channel, physical downlink shared channel
PSBCH：Physical Sidelink Broadcast Channel，物理直行广播信道PSBCH: Physical Sidelink Broadcast Channel, physical direct broadcast channel
PSCCH：Physical Sidelink Control Channel，物理直行控制信道PSCCH: Physical Sidelink Control Channel, physical direct control channel
PSFCH：Physical Sidelink Feedback Channel，物理直行反馈信道PSFCH: Physical Sidelink Feedback Channel, physical direct feedback channel
PSSCH：Physical Sidelink Shared Channel，物理直行共享信道PSSCH: Physical Sidelink Shared Channel, physical direct shared channel
PRB：Physical Resource Block，物理资源块PRB: Physical Resource Block, physical resource block
PSS：Primary Synchronization Signal，主同步信号PSS: Primary Synchronization Signal, the primary synchronization signal
PSS-SL：Primary Synchronization Signal for Sidelink，直行主同步信号PSS-SL: Primary Synchronization Signal for Sidelink, direct main synchronization signal
PSSS：Primary Sidelink Synchronization Signal，主直行同步信号PSSS: Primary Sidelink Synchronization Signal, main straight line synchronization signal
PTAG：Primary Timing Advance Group，主定时提前组PTAG: Primary Timing Advance Group, the main timing advance group
PUSCH：Physical uplink shared channel，物理上行共享信道PUSCH: Physical uplink shared channel, physical uplink shared channel
PUCCH：Physical uplink control channel，物理上行控制信道PUCCH: Physical uplink control channel, physical uplink control channel
QCL：Quasi co-location，准共置QCL: Quasi co-location, quasi co-location
QoS：Quality of Service，服务质量QoS: Quality of Service, quality of service
QZSS：Quasi-Zenith Satellite System，准天顶卫星系统QZSS: Quasi-Zenith Satellite System, Quasi-Zenith Satellite System
RAR：Random Access Response，随机接入响应RAR: Random Access Response, Random Access Response
RB：Resource Block，资源块RB: Resource Block, resource block
RE：Resource Element，资源元素RE: Resource Element, resource element
REG：resource-element group，资源元素组REG: resource-element group, resource element group
RF：Radio Frequency，射频RF: Radio Frequency, radio frequency
RLC：Radio Link Control，无线链路控制协议RLC: Radio Link Control, radio link control protocol
RNTI：Radio-Network Temporary Identifier，无线网络临时标识符RNTI: Radio-Network Temporary Identifier, wireless network temporary identifier
RRC：Radio Resource Control，无线资源控制RRC: Radio Resource Control, radio resource control
RV：Redundancy Version，冗余版本RV: Redundancy Version, redundant version
S-BWP：Sidelink Bandwidth Part，直行带宽片段S-BWP: Sidelink Bandwidth Part, straight bandwidth segment
S-MIB：Sidelink Master Information Block，直行主信息块S-MIB: Sidelink Master Information Block, go straight to the master information block
S-PSS：Sidelink Primary Synchronization Signal，直行主同步信号S-PSS: Sidelink Primary Synchronization Signal, direct main synchronization signal
S-SSB：Sidelink SS/PBCH block，直行同步信号/物理广播信道块S-SSB: Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
S-SSS：Sidelink Secondary Synchronization Signal，直行辅同步信号S-SSS: Sidelink Secondary Synchronization Signal, direct-travel secondary synchronization signal
SCG：Secondary Cell Group，次小区组SCG: Secondary Cell Group, secondary cell group
SCI：Sidelink Control Information，直行控制信息SCI: Sidelink Control Information, direct control information
SCS：Subcarrier Spacing，子载波间隔SCS: Subcarrier Spacing, subcarrier spacing
SDAP：Service Data Adaptation Protocol，业务数据适配协议SDAP: Service Data Adaptation Protocol, service data adaptation protocol
SFN：System Frame Number，系统帧号SFN: System Frame Number, system frame number
SIB：System Information Block，系统信息块SIB: System Information Block, system information block
SL：Sidelink，直行SL: Sidelink, go straight
SL BWP：Sidelink Bandwidth Part，直行带宽片段SL BWP: Sidelink Bandwidth Part, straight bandwidth segment
SL MIB：Sidelink Master Information Block，直行主信息块SL MIB: Sidelink Master Information Block, go straight to the master information block
SL PSS：Sidelink Primary Synchronization Signal，直行主同步信号SL PSS: Sidelink Primary Synchronization Signal, direct main synchronization signal
SL SS：Sidelink Synchronisation Signal，直行同步信号SL SS: Sidelink Synchronization Signal, direct synchronization signal
SL SSID：Sidelink Synchronization Signal Identity(或者Sidelink Synchronization Signal Identifier)，直行同步信号标识SL SSID: Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
SL SSB：Sidelink SS/PBCH block，直行同步信号/物理广播信道块SL SSB: Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
SL SSS：Sidelink Secondary Synchronization Signal，直行辅同步信号SL SSS: Sidelink Secondary Synchronization Signal, direct-travel secondary synchronization signal
SLSS：Sidelink Synchronisation Signal，直行同步信号SLSS: Sidelink Synchronization Signal, direct synchronization signal
SLSS ID：Sidelink Synchronization Signal Identity(或者Sidelink Synchronization Signal Identifier)，直行同步信号标识SLSS ID: Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
SLSSID：Sidelink Synchronization Signal Identity(或者Sidelink Synchronization Signal Identifier)，直行同步信号标识SLSSID: Sidelink Synchronization Signal Identity (or Sidelink Synchronization Signal Identifier), direct synchronization signal identification
SpCell：Special Cell，特殊小区SpCell: Special Cell, special cell
SRS：Sounding Reference Signal，探测参考信号SRS: Sounding Reference Signal, sounding reference signal
SSB：SS/PBCH block，同步信号/物理广播信道块SSB: SS/PBCH block, synchronization signal/physical broadcast channel block
SSB-SL：SS/PBCH block for Sidelink，直行同步信号/物理广播信道块SSB-SL: SS/PBCH block for Sidelink, direct synchronization signal/physical broadcast channel block
SSS：Secondary Synchronization Signal，辅同步信号SSS: Secondary Synchronization Signal, secondary synchronization signal
SSS-SL：Secondary Synchronization Signal for Sidelink，直行辅同步信号SSS-SL: Secondary Synchronization Signal for Sidelink, direct auxiliary synchronization signal
SSSB：Sidelink SS/PBCH block，直行同步信号/物理广播信道块SSSB: Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
SSSS：Secondary Sidelink Synchronization Signal，辅直行同步信号SSSS: Secondary Sidelink Synchronization Signal, auxiliary direct synchronization signal
STAG：Secondary Timing Advance Group，辅定时提前组STAG: Secondary Timing Advance Group, secondary timing advance group
SUL：Supplementary Uplink，补充上行SUL: Supplementary Uplink, supplementary uplink
TA：Timing Advance，定时提前TA: Timing Advance, timing advance
TAG：Timing Advance Group，定时提前组TAG: Timing Advance Group, timing advance group
TB：Transport Block，传输块TB: Transport Block, transport block
TCP：Transmission Control Protocol，传输控制协议TCP: Transmission Control Protocol, Transmission Control Protocol
TDD：Time Division Duplex，时分双工TDD: Time Division Duplex, time division duplex
TPC：Transmit power control，传输功率控制TPC: Transmit power control, transmission power control
UE：User Equipment，用户设备UE: User Equipment, user equipment
UL：Uplink，上行UL: Uplink, uplink
UMTS：Universal Mobile Telecommunications System，通用移动通信系统UMTS: Universal Mobile Telecommunications System, Universal Mobile Telecommunications System
URLLC：Ultra-Reliable and Low Latency Communication，超可靠低延迟通信URLLC: Ultra-Reliable and Low Latency Communication, ultra-reliable and low latency communication
USS：UE-specific Search Space，UE特定搜索空间USS: UE-specific Search Space, UE-specific search space
V2I：Vehicle-to-Infrastructure，车辆到基础设施V2I: Vehicle-to-Infrastructure, vehicle to infrastructure
V2N：Vehicle-to-network，车辆到网络V2N: Vehicle-to-network, vehicle-to-network
V2P：Vehicle-to-Pedestrian，车辆到行人V2P: Vehicle-to-Pedestrian, vehicle to pedestrian
V2V：Vehicle-to-vehicle，车辆到车辆V2V: Vehicle-to-vehicle, vehicle-to-vehicle
V2X：Vehicle-to-everything，车辆到任何实体V2X: Vehicle-to-everything, vehicle to any entity
VRB：Virtual Resource Block，虚拟资源块VRB: Virtual Resource Block, virtual resource block
在基于D2D(Device to Device，设备到设备)技术的通信中，设备(也称为用户设备，User Equipment，UE)之间的接口可以称为PC5接口，相应的传输链路在物理层可以称为“直行”或者说“侧行”(sidelink，简称SL)链路，用于区别上行(uplink，简称UL)链路和下行(downlink，简称DL)链路。基于SL链路的通信可以称为SL通信(sidelink communication)。SL链路及相应的SL通信可以基于LTE技术(下面简称LTE SL)，也可以基于NR技术(下面简称NR SL)。5G V2X通信既可以基于LTE SL，也可以基于NR SL。下文中若未特别说明，“SL”指的是NR SL。In the communication based on D2D (Device to Device) technology, the interface between devices (also called User Equipment, UE) can be called PC5 interface, and the corresponding transmission link can be called at the physical layer. It is a "straight" or "sidelink" (SL) link, which is used to distinguish between an uplink (UL) link and a downlink (DL) link. Communication based on the SL link can be called SL communication (sidelink communication). The SL link and the corresponding SL communication can be based on LTE technology (hereinafter referred to as LTE SL) or NR technology (hereinafter referred to as NR SL). 5G V2X communication can be based on LTE SL or NR SL. Unless otherwise specified below, "SL" refers to NR SL.
SL接口的物理层可以支持在有覆盖(in-coverage)、无覆盖(out-of-coverage)和部分覆盖(partial-coverage)场景中的一种或多种场景下进行一种或多种模式的传输，例如广播(broadcast)传输，又如组播(groupcast)传输，又如单播(unicast)传输，等等。The physical layer of the SL interface can support one or more modes in one or more of the in-coverage, out-of-coverage, and partial-coverage scenarios For example, broadcast transmission, groupcast transmission, unicast transmission, and so on.
对频率范围1(FR1)，SL链路对应的SCS(subcarrier spacing，子载波间隔，记为Δf，单位为kHz)可以是15kHz(正常CP)，或者30kHz(正常CP)，或者60kHz(正常CP或者扩展CP)；对频率范围2(FR2)，SL链路对应的SCS可以是60kHz(正常CP或者扩展CP)，或者120kHz(正常CP)。每个SCS分别对应一个SCS配置(SCS configuration，记为μ)，例如，Δf＝15kHz对应μ＝0，Δf＝30kHz对应μ＝1，Δf＝60kHz对应μ＝2，Δf＝120kHz对应μ＝3，等等；又如，对任意一个给定的μ，Δf＝2 μ·15kHz。 For frequency range 1 (FR1), the SCS (subcarrier spacing, subcarrier spacing, denoted as Δf, in kHz) corresponding to the SL link can be 15kHz (normal CP), or 30kHz (normal CP), or 60kHz (normal CP) Or extended CP); for frequency range 2 (FR2), the SCS corresponding to the SL link can be 60kHz (normal CP or extended CP), or 120kHz (normal CP). Each SCS corresponds to a SCS configuration (SCS configuration, denoted as μ), for example, Δf=15kHz corresponds to μ=0, Δf=30kHz corresponds to μ=1, Δf=60kHz corresponds to μ=2, Δf=120kHz corresponds to μ=3 , Etc.; another example, for any given μ, Δf = 2 μ · 15kHz.
和SL同步功能相关的信号和信道可以包括：The signals and channels related to the SL synchronization function can include:
●SL PSS(Sidelink Primary Synchronization Signal，直行主同步信 号)，或者称为S-PSS，或者称为SPSS，或者称为SL-PSS，或者称为PSS-SL，或者称为PSSS(Primary Sidelink Synchronization Signal，主直行同步信号)，等等。●SL PSS (Sidelink Primary Synchronization Signal), or S-PSS, or SPSS, or SL-PSS, or PSS-SL, or PSSS (Primary Sidelink Synchronization Signal) , Main straight sync signal), etc.
●SL SSS(Sidelink Secondary Synchronization Signal，直行辅同步信号)，或者称为S-SSS，或者称为SSSS(Sidelink Secondary Synchronization Signal)，或者称为SL-SSS，或者称为SSS-SL，或者称为SSSS(Secondary Sidelink Synchronization Signal，辅直行同步信号)，等等。●SL SSS (Sidelink Secondary Synchronization Signal), or S-SSS, or SSSS (Sidelink Secondary Synchronization Signal), or SL-SSS, or SSS-SL, or SSSS (Secondary Sidelink Synchronization Signal), etc.
●PSBCH(Physical Sidelink Broadcast Channel，物理直行广播信道)。●PSBCH (Physical Sidelink Broadcast Channel, physical direct broadcast channel).
SL PSS、SL SSS和PSBCH一起可以在时频资源上组织成块状的形式，例如称为SL SSB(Sidelink SS/PBCH block，直行同步信号/物理广播信道块)，或者称为S-SSB，或者称为SSSB，或者称为SL-SSB，或者称为SSB-SL。SL SSB的传输带宽(例如，11个资源块)位于给UE所配置的SL BWP(Sidelink Bandwidth Part，直行带宽片段，或者称为S-BWP，或者称为SBWP，或者称为SL-BWP，或者称为BWP-SL)内。SL PSS和/或SL SSS可以携带SL SSID(Sidelink Synchronization Identity，或者Sidelink Synchronization Identifier，直行同步标识，或者Sidelink Synchronization Signal Identity，或者Sidelink Synchronization Signal Identifier，直行同步信号标识，或者称为SL-SSID，或者称为SSID-SL，或者称为SLSSID，或者称为SLSS ID，或者称为S-SSID，等等)，PSBCH可以携带SL MIB(Sidelink Master Information Block，直行主信息块，或者称为SL-MIB，或者称为S-MIB，或者称为MIB-SL，或者称为MIB-SL-V2X)。SL MIB中可以包含SL链路的配置信息，例如与携带所述SL MIB的PSBCH(或者相应的SL SSB)所在的直接帧号或者直接子帧号或者直接时隙号有关的信息。SL PSS, SL SSS, and PSBCH together can be organized into blocks on time-frequency resources, for example, called SL SSB (Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block), or S-SSB, Or called SSB, or SL-SSB, or SSB-SL. The transmission bandwidth of the SL SSB (for example, 11 resource blocks) is located in the SL BWP (Sidelink Bandwidth Part) configured for the UE, or S-BWP, or SBWP, or SL-BWP, or Referred to as BWP-SL). SL PSS and/or SL SSS can carry SL SSID (Sidelink Synchronization Identity, or Sidelink Synchronization Identifier), or Sidelink Synchronization Signal Identity, or Sidelink Synchronization Signal Identity, or Sidelink Synchronization Signal Identity, or SL-SSID, or SL-SSID Called SSID-SL, or SLSSID, or SLSS ID, or S-SSID, etc.), PSBCH can carry SL MIB (Sidelink Master Information Block), or SL-MIB , Or S-MIB, or MIB-SL, or MIB-SL-V2X). The SL MIB may include configuration information of the SL link, for example, information related to the direct frame number or the direct subframe number or the direct time slot number where the PSBCH (or the corresponding SL SSB) carrying the SL MIB is located.
与SL同步有关的同步源(synchronization source，或者称为同步参考，synchronization reference，或者称为同步参考源，synchronization reference source)可以包括GNSS(Global navigation satellite system，全球导航卫星系统)、gNB、eNB和UE(例如NR UE，又如LTE UE，又如NR UE或LTE UE)。一个作为同步源的UE(例如，传输SL SSB的UE)，也可 以称为SyncRef UE。The synchronization source related to SL synchronization (synchronization source, or synchronization reference, or synchronization reference source, or synchronization reference source) may include GNSS (Global Navigation Satellite System), gNB, eNB, and UE (for example, NR UE, LTE UE, NR UE or LTE UE). A UE serving as a synchronization source (for example, a UE transmitting SL and SSB) can also be called SyncRef UE.
同步源的优先级可以按表1所示的方式定义。其中，可以通过配置或预配置信息确定是使用“基于GNSS的同步”(即表1中的第二列)还是使用“基于gNB/eNB的同步”(即表1中的第三列)。另外，在使用“基于GNSS的同步”时，可以通过配置或预配置信息确定是否定义基于gNB/eNB的同步源。其中，所述“定义基于gNB/eNB的同步源”是指在表1中的第二列中定义“gNB/eNB”、“直接同步到gNB/eNB的UE”和“间接同步到gNB/eNB的UE”这三个同步源。可选地，所述“定义基于gNB/eNB的同步源”有时也可以称为“使用基于gNB/eNB的同步源”。The priority of the synchronization source can be defined as shown in Table 1. Among them, the configuration or pre-configuration information can be used to determine whether to use "GNSS-based synchronization" (ie the second column in Table 1) or "gNB/eNB-based synchronization" (ie, the third column in Table 1). In addition, when using "GNSS-based synchronization", you can determine whether to define a gNB/eNB-based synchronization source through configuration or pre-configuration information. Among them, the "define gNB/eNB-based synchronization source" refers to the definition of "gNB/eNB", "UE synchronized directly to gNB/eNB" and "indirectly synchronized to gNB/eNB" in the second column of Table 1. UE” these three synchronization sources. Optionally, the "defining a synchronization source based on gNB/eNB" may sometimes be referred to as "using a synchronization source based on gNB/eNB".
本领域技术人员应该理解，表1中的第一列中对优先级的编号和/或命名只是一个示例，也可以按其他方式对优先级进行编号和/或命名；例如，在使用“基于GNSS的同步”时，若不定义基于gNB/eNB的同步源，则表1中的第二列中的“其他UE”也可以编号和/或命名为“P3”而不是“P6”。Those skilled in the art should understand that the numbering and/or naming of priorities in the first column of Table 1 is just an example, and the priorities can also be numbered and/or named in other ways; for example, when using “GNSS-based If the synchronization source based on gNB/eNB is not defined, the “other UE” in the second column of Table 1 can also be numbered and/or named “P3” instead of “P6”.
在使用“基于GNSS的同步”时，若不定义基于gNB/eNB的同步源，则表1中的第二列中的“其他UE”可以包括“直接同步到gNB/eNB的UE”和/或“间接同步到gNB/eNB的UE”，也可以不包括“直接同步到gNB/eNB的UE”和/或“间接同步到gNB/eNB的UE”。When using "GNSS-based synchronization", if the gNB/eNB-based synchronization source is not defined, the "other UEs" in the second column of Table 1 may include "UEs directly synchronized to gNB/eNB" and/or "UE synchronized to gNB/eNB indirectly" may not include "UE synchronized directly to gNB/eNB" and/or "UE synchronized to gNB/eNB indirectly".
GNSS的例子包括GPS(Global Positioning System，全球定位系统)、GLONASS(GLObal NAvigation Satellite System，全球导航卫星系统)、BeiDou(北斗导航卫星系统)、Galileo(伽利略导航卫星系统)、QZSS(Quasi-Zenith Satellite System，准天顶卫星系统)等。Examples of GNSS include GPS (Global Positioning System), GLONASS (GLObal Navigation Satellite System), BeiDou (BeiDou Navigation Satellite System), Galileo (Galileo Navigation Satellite System), QZSS (Quasi-Zenith Satellite System) System, Quasi-Zenith Satellite System) and so on.
表1 SL同步源优先级Table 1 Priority of SL synchronization source
优先级priority 基于GNSS的同步GNSS-based synchronization 基于gNB/eNB的同步Synchronization based on gNB/eNB
P0P0 GNSSGNSS gNB/eNBgNB/eNB
P1P1 直接同步到GNSS的UEUE directly synchronized to GNSS 直接同步到gNB/eNB的UEUE directly synchronized to gNB/eNB
P2P2 间接同步到GNSS的UEIndirectly synchronized to GNSS UE 间接同步到gNB/eNB的UEUE indirectly synchronized to gNB/eNB
P3P3 gNB/eNBgNB/eNB GNSSGNSS
P4P4 直接同步到gNB/eNB的UEUE directly synchronized to gNB/eNB 直接同步到GNSS的UEUE directly synchronized to GNSS
P5P5 间接同步到gNB/eNB的UEUE indirectly synchronized to gNB/eNB 间接同步到GNSS的UEIndirectly synchronized to GNSS UE
P6P6 其他UEOther UE 其他UEOther UE
在SL同步过程中，对于同步源为GNSS或者基站(例如gNB，或者eNB等)的情况，正在进行同步(例如，正在检测一个或多个同步源发 出的与同步有关的信号和/或信道)的UE从同步源的类型可以推断相应的同步源优先级。例如，若配置或预配置信息指示“基于gNB/eNB的同步”，且正在检测的同步源为gNB或eNB，则从表1可以看出，所述正在检测的同步源的优先级为P0。但是，对于同步源为SyncRef UE的情况，正在进行同步的UE如何确定相应同步源的优先级，是一个需要解决的问题。In the SL synchronization process, when the synchronization source is a GNSS or a base station (such as gNB, or eNB, etc.), synchronization is in progress (for example, synchronization-related signals and/or channels from one or more synchronization sources are being detected) The UE can infer the priority of the corresponding synchronization source from the type of synchronization source. For example, if the configuration or pre-configuration information indicates "gNB/eNB-based synchronization", and the synchronization source being detected is gNB or eNB, it can be seen from Table 1 that the priority of the synchronization source being detected is P0. However, for the case where the synchronization source is SyncRef UE, how the UE that is synchronizing determines the priority of the corresponding synchronization source is a problem that needs to be solved.
SL链路在时域上可以划分成多个直接帧(direct frame，或者称为系统帧，system frame，或者称为无线帧，radio frame，有时简称为帧，frame)，并周期性地对直接帧进行编号(例如称为DFN，Direct Frame Number，直接帧号)，相应的周期也可以称为“DFN周期”(记为T DFN_PERIOD)。T DFN_PERIOD可以是一个预定义的值，例如，T DFN_PERIOD＝10240毫秒。 The SL link can be divided into multiple direct frames in the time domain (direct frame, or system frame, system frame, or wireless frame, radio frame, sometimes abbreviated as frame, frame). Frames are numbered (for example, called DFN, Direct Frame Number, direct frame number), and the corresponding period may also be called "DFN period" (denoted as T DFN_PERIOD ). T DFN_PERIOD may be a predefined value, for example, T DFN_PERIOD = 10240 milliseconds.
在每个DFN周期内可以包含
Figure PCTCN2020118651-appb-000001
个直接帧，其中每个直接帧对应的DFN按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000002
例如，
Figure PCTCN2020118651-appb-000003
Can contain in each DFN cycle
Figure PCTCN2020118651-appb-000001
Direct frames, where the DFN corresponding to each direct frame is in the order of increasing time as
Figure PCTCN2020118651-appb-000002
E.g,
Figure PCTCN2020118651-appb-000003
每个直接帧可以包含
Figure PCTCN2020118651-appb-000004
个直接半帧(direct half frame，或者称为half direct frame，半直接帧，或者称为half frame，半帧)，其中每个直接半帧对应的直接半帧号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000005
例如，
Figure PCTCN2020118651-appb-000006
Each direct frame can contain
Figure PCTCN2020118651-appb-000004
A direct half frame (or half direct frame, or half direct frame, or half frame, half frame), in which the direct half frame number corresponding to each direct half frame is in the order of increasing time
Figure PCTCN2020118651-appb-000005
E.g,
Figure PCTCN2020118651-appb-000006
每个直接帧可以包含
Figure PCTCN2020118651-appb-000007
个直接子帧(direct subframe，或者称为subframe，子帧)，其中每个直接子帧对应的直接子帧号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000008
例如，
Figure PCTCN2020118651-appb-000009
Each direct frame can contain
Figure PCTCN2020118651-appb-000007
Direct subframes (direct subframes, or subframes, subframes), in which the direct subframe numbers corresponding to each direct subframe are sequentially ascending in time
Figure PCTCN2020118651-appb-000008
E.g,
Figure PCTCN2020118651-appb-000009
每个直接帧可以包含
Figure PCTCN2020118651-appb-000010
个直接时隙(direct slot，或者称为slot，时隙)，其中每个直接时隙对应的直接时隙号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000011
Figure PCTCN2020118651-appb-000012
的取值可以与μ有关。例如，若μ＝0，则
Figure PCTCN2020118651-appb-000013
又如，若μ＝1，则
Figure PCTCN2020118651-appb-000014
又如，若μ＝2，则
Figure PCTCN2020118651-appb-000015
又如，若μ＝3，则
Figure PCTCN2020118651-appb-000016
Figure PCTCN2020118651-appb-000017
又如，对任意一个μ，
Figure PCTCN2020118651-appb-000018
Each direct frame can contain
Figure PCTCN2020118651-appb-000010
A direct slot (or called slot, time slot), where the direct slot number corresponding to each direct slot is in the order of increasing time as
Figure PCTCN2020118651-appb-000011
Figure PCTCN2020118651-appb-000012
The value of can be related to μ. For example, if μ=0, then
Figure PCTCN2020118651-appb-000013
For another example, if μ = 1, then
Figure PCTCN2020118651-appb-000014
For another example, if μ=2, then
Figure PCTCN2020118651-appb-000015
For another example, if μ=3, then
Figure PCTCN2020118651-appb-000016
Figure PCTCN2020118651-appb-000017
For another example, for any μ,
Figure PCTCN2020118651-appb-000018
每个直接半帧可以包含
Figure PCTCN2020118651-appb-000019
个直接子帧，其中每个直接子帧对应的直接子帧号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000020
Figure PCTCN2020118651-appb-000021
例如，
Figure PCTCN2020118651-appb-000022
Each direct half frame can contain
Figure PCTCN2020118651-appb-000019
Direct subframes, where the direct subframe number corresponding to each direct subframe is in increasing order of time as
Figure PCTCN2020118651-appb-000020
Figure PCTCN2020118651-appb-000021
E.g,
Figure PCTCN2020118651-appb-000022
每个直接半帧可以包含
Figure PCTCN2020118651-appb-000023
个直接时隙，其中每个直接时隙对应的直接时隙号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000024
Figure PCTCN2020118651-appb-000025
Figure PCTCN2020118651-appb-000026
的取值可以与μ有关。例如，若μ＝0，则
Figure PCTCN2020118651-appb-000027
又如，若μ＝1，则
Figure PCTCN2020118651-appb-000028
又如，若μ＝2，则
Figure PCTCN2020118651-appb-000029
又如，若μ＝3，则
Figure PCTCN2020118651-appb-000030
Figure PCTCN2020118651-appb-000031
又如，对任意一个μ，
Figure PCTCN2020118651-appb-000032
Each direct half frame can contain
Figure PCTCN2020118651-appb-000023
Direct time slots, where the direct time slot number corresponding to each direct time slot is in increasing order of time as
Figure PCTCN2020118651-appb-000024
Figure PCTCN2020118651-appb-000025
Figure PCTCN2020118651-appb-000026
The value of can be related to μ. For example, if μ=0, then
Figure PCTCN2020118651-appb-000027
For another example, if μ = 1, then
Figure PCTCN2020118651-appb-000028
For another example, if μ=2, then
Figure PCTCN2020118651-appb-000029
For another example, if μ=3, then
Figure PCTCN2020118651-appb-000030
Figure PCTCN2020118651-appb-000031
For another example, for any μ,
Figure PCTCN2020118651-appb-000032
每个直接子帧可以包含
Figure PCTCN2020118651-appb-000033
个直接时隙，其中每个直接时隙对应的直接时隙号按时间递增的顺序依次为
Figure PCTCN2020118651-appb-000034
Figure PCTCN2020118651-appb-000035
Figure PCTCN2020118651-appb-000036
的取值可以与μ有关，例如，若μ＝0，则
Figure PCTCN2020118651-appb-000037
又如，若μ＝1，则
Figure PCTCN2020118651-appb-000038
又如，若μ＝2，则
Figure PCTCN2020118651-appb-000039
又如，若μ＝3，则
Figure PCTCN2020118651-appb-000040
又如，对任意一个μ，
Figure PCTCN2020118651-appb-000041
Each direct subframe can contain
Figure PCTCN2020118651-appb-000033
Direct time slots, where the direct time slot number corresponding to each direct time slot is in increasing order of time as
Figure PCTCN2020118651-appb-000034
Figure PCTCN2020118651-appb-000035
Figure PCTCN2020118651-appb-000036
The value of can be related to μ, for example, if μ=0, then
Figure PCTCN2020118651-appb-000037
For another example, if μ = 1, then
Figure PCTCN2020118651-appb-000038
For another example, if μ=2, then
Figure PCTCN2020118651-appb-000039
For another example, if μ=3, then
Figure PCTCN2020118651-appb-000040
For another example, for any μ,
Figure PCTCN2020118651-appb-000041
一个直接帧的长度(或者说持续时间)可以记为
Figure PCTCN2020118651-appb-000042
例如，
Figure PCTCN2020118651-appb-000043
The length (or duration) of a direct frame can be recorded as
Figure PCTCN2020118651-appb-000042
E.g,
Figure PCTCN2020118651-appb-000043
一个直接半帧的长度(或者说持续时间)可以记为
Figure PCTCN2020118651-appb-000044
例如，
Figure PCTCN2020118651-appb-000045
The length (or duration) of a direct half frame can be recorded as
Figure PCTCN2020118651-appb-000044
E.g,
Figure PCTCN2020118651-appb-000045
一个直接子帧的长度(或者说持续时间)可以记为
Figure PCTCN2020118651-appb-000046
例 如，
Figure PCTCN2020118651-appb-000047
The length (or duration) of a direct subframe can be recorded as
Figure PCTCN2020118651-appb-000046
E.g,
Figure PCTCN2020118651-appb-000047
一个直接时隙的长度(或者说持续时间，记为
Figure PCTCN2020118651-appb-000048
)可以与μ有关。例如，
Figure PCTCN2020118651-appb-000049
可选地，若
Figure PCTCN2020118651-appb-000050
Figure PCTCN2020118651-appb-000051
则
Figure PCTCN2020118651-appb-000052
又如，
Figure PCTCN2020118651-appb-000053
Figure PCTCN2020118651-appb-000054
可选地，若
Figure PCTCN2020118651-appb-000055
则
Figure PCTCN2020118651-appb-000056
又如，
Figure PCTCN2020118651-appb-000057
Figure PCTCN2020118651-appb-000058
可选地，若
Figure PCTCN2020118651-appb-000059
则
Figure PCTCN2020118651-appb-000060
The length of a direct time slot (or duration, denoted as
Figure PCTCN2020118651-appb-000048
) Can be related to μ. E.g,
Figure PCTCN2020118651-appb-000049
Optionally, if
Figure PCTCN2020118651-appb-000050
Figure PCTCN2020118651-appb-000051
then
Figure PCTCN2020118651-appb-000052
Another example,
Figure PCTCN2020118651-appb-000053
Figure PCTCN2020118651-appb-000054
Optionally, if
Figure PCTCN2020118651-appb-000055
then
Figure PCTCN2020118651-appb-000056
Another example,
Figure PCTCN2020118651-appb-000057
Figure PCTCN2020118651-appb-000058
Optionally, if
Figure PCTCN2020118651-appb-000059
then
Figure PCTCN2020118651-appb-000060
图1给出了上述对直接帧、直接半帧、直接子帧和直接时隙等的划分和编号的一个例子，其中，μ＝1(对应Δf＝30kHz)，
Figure PCTCN2020118651-appb-000061
Figure PCTCN2020118651-appb-000062
Figure PCTCN2020118651-appb-000063
Figure PCTCN2020118651-appb-000064
Figure PCTCN2020118651-appb-000065
T DFN_PERIOD＝10240毫秒。 Figure 1 shows an example of the division and numbering of direct frames, direct half-frames, direct subframes, and direct time slots, where μ=1 (corresponding to Δf=30kHz),
Figure PCTCN2020118651-appb-000061
Figure PCTCN2020118651-appb-000062
Figure PCTCN2020118651-appb-000063
Figure PCTCN2020118651-appb-000064
Figure PCTCN2020118651-appb-000065
T DFN_PERIOD = 10240 milliseconds.
SL同步过程支持周期性的SL SSB传输，相应的周期也可以称为“SL SSB周期”(记为T SLSSB)。T SLSSB可以是一个预定义的值，例如T SLSSB＝16帧，又如T SLSSB＝160毫秒。T SLSSB也可以通过预配置或者配置信息指示。 The SL synchronization process supports periodic SL SSB transmission, and the corresponding period may also be referred to as "SL SSB period" (denoted as T SLSSB ). T SLSSB may be a predefined value, for example, T SLSSB = 16 frames, or T SLSSB = 160 milliseconds. T SLSSB can also be indicated by pre-configuration or configuration information.
在一个SL SSB周期内的SL SSB传输的个数(记为
Figure PCTCN2020118651-appb-000066
)可以是一个预定义的值，也可以通过预配置或者配置信息指示。例如， The number of SL SSB transfers in one SL SSB cycle (denoted as
Figure PCTCN2020118651-appb-000066
) Can be a pre-defined value, or can be indicated by pre-configuration or configuration information. E.g,
●对频率范围1(FR1)，●For frequency range 1 (FR1),
◆对Δf＝15kHz，
Figure PCTCN2020118651-appb-000067
可以预定义为集合{1，2}中的一个值，或者通过预配置或者配置信息指示为集合T1中的一个值，其中T1可以是下面中的一项： ◆For Δf=15kHz,
Figure PCTCN2020118651-appb-000067
It can be pre-defined as a value in the set {1, 2}, or indicated as a value in the set T1 through pre-configuration or configuration information, where T1 can be one of the following:
○{1}。○{1}.
○{1，2}。○{1, 2}.
◆对Δf＝30kHz，
Figure PCTCN2020118651-appb-000068
可以预定义为集合{1，2，4}中的一个值，或者通过预配置或者配置信息指示为集合T2中的一个值，其中T2可以是下面中的一项： ◆For Δf=30kHz,
Figure PCTCN2020118651-appb-000068
It can be pre-defined as a value in the set {1, 2, 4}, or indicated as a value in the set T2 through pre-configuration or configuration information, where T2 can be one of the following:
○{1}。○{1}.
○{1，2}。○{1, 2}.
○{1，2，4}。○ {1, 2, 4}.
◆对Δf＝60kHz，
Figure PCTCN2020118651-appb-000069
可以预定义为集合{1，2，4，8}中的一个值，或者通过预配置或者配置信息指示为集合T3中的一个值，其中T3可以是下面中的一项： ◆For Δf=60kHz,
Figure PCTCN2020118651-appb-000069
It can be pre-defined as a value in the set {1, 2, 4, 8}, or indicated as a value in the set T3 through pre-configuration or configuration information, where T3 can be one of the following:
○{1}。○{1}.
○{1，2}。○{1, 2}.
○{1，2，4}。○ {1, 2, 4}.
○{1，2，4，8}。○ {1, 2, 4, 8}.
●对频率范围2(FR2)，●For frequency range 2 (FR2),
◆对Δf＝60kHz，
Figure PCTCN2020118651-appb-000070
可以预定义为集合{1，2，4，8，16，32}中的一个值，或者通过预配置或者配置信息指示为集合T4中的一个值，其中T4可以是下面中的一项： ◆For Δf=60kHz,
Figure PCTCN2020118651-appb-000070
It can be pre-defined as a value in the set {1, 2, 4, 8, 16, 32}, or indicated as a value in the set T4 through pre-configuration or configuration information, where T4 can be one of the following:
○{1}。○{1}.
○{1，2}。○{1, 2}.
○{1，2，4}。○ {1, 2, 4}.
○{1，2，4，8}。○ {1, 2, 4, 8}.
○{1，2，4，8，16}。○ {1, 2, 4, 8, 16}.
○{1，2，4，8，16，32}。○ {1, 2, 4, 8, 16, 32}.
◆对Δf＝120kHz，
Figure PCTCN2020118651-appb-000071
可以预定义为集合{1，2，4，8，16，32，64}中的一个值，或者通过预配置或者配置信息指示为集合T5中的一个值，其中T5可以是下面中的一项： ◆For Δf=120kHz,
Figure PCTCN2020118651-appb-000071
Can be pre-defined as a value in the set {1, 2, 4, 8, 16, 32, 64}, or indicated as a value in the set T5 through pre-configuration or configuration information, where T5 can be one of the following :
○{1}。○{1}.
○{1，2}。○{1, 2}.
○{1，2，4}。○ {1, 2, 4}.
○{1，2，4，8}。○ {1, 2, 4, 8}.
○{1，2，4，8，16}。○ {1, 2, 4, 8, 16}.
○{1，2，4，8，16，32}。○ {1, 2, 4, 8, 16, 32}.
○{1，2，4，8，16，32，64}。○ {1, 2, 4, 8, 16, 32, 64}.
可选地，对于一个SyncRef UE，所述一个SL SSB周期内的
Figure PCTCN2020118651-appb-000072
个SL SSB可以使用相同的传输波束进行传输，也可以使用不同的传输波束进行传输。 Optionally, for a SyncRef UE, the
Figure PCTCN2020118651-appb-000072
Each SL SSB can use the same transmission beam for transmission, or use different transmission beams for transmission.
可以看出，一个DFN周期内的SL SSB周期的个数(记为
Figure PCTCN2020118651-appb-000073
)等于
Figure PCTCN2020118651-appb-000074
(其中T SLSSB的单位为帧，例如
Figure PCTCN2020118651-appb-000075
)；一个DFN周期内的SL SSB传输的个数(记为
Figure PCTCN2020118651-appb-000076
)等于
Figure PCTCN2020118651-appb-000077
Figure PCTCN2020118651-appb-000078
It can be seen that the number of SL SSB cycles in a DFN cycle (denoted as
Figure PCTCN2020118651-appb-000073
)equal
Figure PCTCN2020118651-appb-000074
( The unit of T SLSSB is frame, for example
Figure PCTCN2020118651-appb-000075
); the number of SL SSB transmissions in a DFN cycle (denoted as
Figure PCTCN2020118651-appb-000076
)equal
Figure PCTCN2020118651-appb-000077
Figure PCTCN2020118651-appb-000078
图2是关于“DFN周期”T DFN_PERIOD、“DFN周期内的SL SSB周期的个数”
Figure PCTCN2020118651-appb-000079
和“SL SSB周期内的SL SSB传输的个数”
Figure PCTCN2020118651-appb-000080
之间的关系的一个例子。其中，μ＝1(对应Δf＝30kHz)，T DFN_PERIOD＝10240毫秒，
Figure PCTCN2020118651-appb-000081
Figure 2 is about the "DFN period" T DFN_PERIOD and "the number of SL SSB periods in the DFN period"
Figure PCTCN2020118651-appb-000079
And "the number of SL SSB transfers in the SL SSB cycle"
Figure PCTCN2020118651-appb-000080
An example of the relationship between. Among them, μ = 1 (corresponding to Δf = 30kHz), T DFN_PERIOD = 10240 milliseconds,
Figure PCTCN2020118651-appb-000081
在时域上，一次SL传输可以占用一个时隙中的一个或多个OFDM符号，或者多个时隙(其中每个时隙中占用一个或多个OFDM符号)。对于正在进行同步的UE，如何通过同步源提供的信息确定SL定时(timing)信息(或者说与帧结构有关的信息，例如OFDM符号的边界，时隙边界，子帧边界，半帧边界，帧边界，一个给定的时隙在子帧或半帧或帧内的编号，一个给定的子帧在半帧或帧内的编号，一个给定的半帧在帧内的编号，一个给定的帧在DFN周期内的编号，等等)，是又一个需要解决的问题。In the time domain, one SL transmission can occupy one or more OFDM symbols in one slot, or multiple slots (wherein each slot occupies one or more OFDM symbols). For a UE that is synchronizing, how to determine SL timing information (or information related to the frame structure, such as OFDM symbol boundaries, slot boundaries, sub-frame boundaries, half-frame boundaries, frame Boundary, the number of a given time slot in a subframe or half frame or frame, the number of a given subframe in a half frame or frame, the number of a given half frame in a frame, a given The number of the frame in the DFN period, etc.) is another problem that needs to be solved.
另外，如何确定SL时域资源(例如用于SL传输，和/或用于SL接收，和/或用于SL上的AGC，和/或用于SL上的GP，和/或用于其他与SL有关的用途的时域资源)，是另一个需要解决的问题。In addition, how to determine SL time domain resources (for example, for SL transmission, and/or for SL reception, and/or for AGC on SL, and/or for GP on SL, and/or for other Time domain resources related to SL usage) is another problem that needs to be solved.
在本发明的所有实施例和实施方式中，如未特别说明：In all the examples and implementations of the present invention, if not specifically stated:
●可选地，“高层”可以指物理层之上的一个或多个协议层或协议子层。例如MAC层，又如RLC层，又如PC5 RRC层，又如PDCP层，又如RRC层，等等。● Optionally, "higher layer" can refer to one or more protocol layers or protocol sublayers above the physical layer. For example, the MAC layer, the RLC layer, the PC5 RRC layer, the PDCP layer, the RRC layer, and so on.
●可选地，“预配置”信息可以是通过高层协议/信令进行预配置的信息。● Optionally, the "pre-configuration" information may be information pre-configured through higher layer protocols/signaling.
●可选地，“配置”信息可以是通过高层协议/信令进行配置的信息。● Optionally, the "configuration" information may be information configured through a higher layer protocol/signaling.
●可选地，μ是SL载波的SCS配置。可选地，一个SL载波中的所有SL传输都使用同一个SCS配置和/或同一个CP。● Optionally, μ is the SCS configuration of the SL carrier. Optionally, all SL transmissions in one SL carrier use the same SCS configuration and/or the same CP.
●可选地，μ是SL BWP的SCS配置。可选地，一个SL BWP中的所有SL传输都使用同一个SCS配置和/或同一个CP。● Optionally, μ is the SCS configuration of SL BWP. Optionally, all SL transmissions in one SL BWP use the same SCS configuration and/or the same CP.
●可选地，μ是资源池的SCS配置。可选地，一个资源池中的所有SL传输都使用同一个SCS配置和/或同一个CP。● Optionally, μ is the SCS configuration of the resource pool. Optionally, all SL transmissions in a resource pool use the same SCS configuration and/or the same CP.
●可选地，SL SSB也可以称为候选(candidate)SL SSB，或者SL SSB候选。可选地，在一个候选SL SSB所对应的时域和/或频域资源上，可能存在SL SSB传输，也可能不存在SL SSB传输。可选地，在一个候选SL SSB所对应的时域和/或频域资源上，可能存在一个或多个UE传输的SL SSB。● Optionally, SL SSB may also be called candidate SL SSB, or SL SSB candidate. Optionally, on the time domain and/or frequency domain resources corresponding to a candidate SL SSB, there may or may not be SL SSB transmission. Optionally, on the time domain and/or frequency domain resources corresponding to one candidate SL SSB, there may be one or more SL SSBs transmitted by the UE.
●可选地，SL SSB可以只在“SL时隙”(例如，用于SL传输，和/或用于SL接收，和/或用于SL上的AGC，和/或用于SL上的GP，和/或用于其他与SL有关的用途的时隙)上传输。其中，所述“SL时隙”可以是配置为允许SL传输的时隙；例如，在一个载波上，部分或全部时隙可以配置为SL时隙；又如，在一个载波上，部分或全部时隙可以配置为UL时隙；又如，在一个载波上，部分或全部时隙可以配置为DL时隙；又如，在一个载波上，部分或全部时隙可以配置为FL(flexible)时隙；又如，在一个载波上，部分或全部时隙可以配置为保留时隙。● Optionally, SL SSB can only be used in "SL time slots" (for example, for SL transmission, and/or for SL reception, and/or for AGC on SL, and/or for GP on SL , And/or used for other SL-related purposes) on the time slot). Wherein, the "SL time slot" can be a time slot configured to allow SL transmission; for example, on a carrier, part or all of the time slots can be configured as SL time slots; another example, on a carrier, part or all of the time slots Time slots can be configured as UL time slots; another example, on a carrier, part or all of the time slots can be configured as DL time slots; another example, on a carrier, part or all of the time slots can be configured as FL (flexible) Slot; another example, on a carrier, part or all of the time slots can be configured as reserved time slots.
[实施例一][Example 1]
下面结合图3来说明本发明的实施例一的由用户设备执行的方法。The method executed by the user equipment according to the first embodiment of the present invention will be described below with reference to FIG. 3.
图3是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。Fig. 3 is a flowchart showing a method executed by a user equipment according to the first embodiment of the present invention.
如图3所示，在本发明的实施例一中，用户设备UE执行的步骤包括：步骤S101和步骤S103。As shown in FIG. 3, in the first embodiment of the present invention, the steps performed by the user equipment UE include: step S101 and step S103.
具体地，在步骤S101，获取同步源优先级指示信息。Specifically, in step S101, the synchronization source priority indication information is obtained.
其中，among them,
●可选地，所述同步源可以是一个UE(称为SyncRefUE)，所述“同步源优先级指示信息”可以由所述SyncRef UE传输的SL SSB指示。其中，● Optionally, the synchronization source may be a UE (referred to as SyncRefUE), and the "synchronization source priority indication information" may be indicated by the SL SSB transmitted by the SyncRef UE. among them,
◆可选地，通过接收所述SL SSB来获取由所述SL SSB指示的“同步源优先级指示信息”。其中，◆ Optionally, obtain the "synchronization source priority indication information" indicated by the SL SSB by receiving the SL SSB. among them,
○可选地，所述SL SSB可以包含SL PSS、SL SSS和PSBCH。○ Optionally, the SL SSB may include SL PSS, SL SSS, and PSBCH.
○可选地，所述“接收SL SSB”可以指接收SL SSB中的部分或全部。例如，接收SL PSS。又如，接收SL PSS和SL SSS。又如，接收SL PSS、SL SSS和PSBCH。○ Optionally, the "receiving SL SSB" may refer to receiving part or all of the SL SSB. For example, receiving SL PSS. Another example is receiving SL PSS and SL SSS. Another example is receiving SL PSS, SL SSS and PSBCH.
其中，among them,
◇可选地，通过接收SL SSB可以确定下面中的一项或多项：◇ Optionally, one or more of the following can be determined by receiving the SL SSB:
Figure PCTCN2020118651-appb-000082
SL PSS序列。
Figure PCTCN2020118651-appb-000082
SL PSS sequence.
>可选地，SL PSS序列的总数为2。> Optionally, the total number of SL PSS sequences is 2.
>可选地，SL PSS序列的编号的集合为{0，1}。> Optionally, the set of numbers of the SL PSS sequence is {0, 1}.
Figure PCTCN2020118651-appb-000083
SL SSS序列。
Figure PCTCN2020118651-appb-000083
SL SSS sequence.
>可选地，SL SSS序列的总数为336。> Optionally, the total number of SL SSS sequences is 336.
>可选地，SL SSS序列的编号的集合为{0，1，...，335}。> Optionally, the set of numbers of the SL SSS sequence is {0, 1, ..., 335}.
Figure PCTCN2020118651-appb-000084
SL SSID。
Figure PCTCN2020118651-appb-000084
SL SSID.
>可选地，SL SSID的总数为672。> Optionally, the total number of SL SSIDs is 672.
>可选地，SL SSID的取值集合可以是{0，1，...，671}。> Optionally, the value set of SL SSID can be {0, 1, ..., 671}.
>可选地，SL SSID由SL PSS序列和SL SSS序列的组合方式确定。例如，若SL PSS的编号为0，且SL SSS的编号为0，则相应的SL SSID为0。> Optionally, the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
Figure PCTCN2020118651-appb-000085
PSBCH所使用的DMRS序列。
Figure PCTCN2020118651-appb-000085
DMRS sequence used by PSBCH.
Figure PCTCN2020118651-appb-000086
PSBCH有效载荷(PSBCH payload)。其中，
Figure PCTCN2020118651-appb-000086
PSBCH payload (PSBCH payload). among them,
>可选地，所述PSBCH有效载荷可以包括由高层产生的PSBCH有效载荷(例如SL MIB)和/或除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)。> Optionally, the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
◇可选地，对于有些信号和/或信道(例如SL PSS，又如SL SSS)，所述“接收”可以替换为“检测”。◇ Optionally, for some signals and/or channels (for example, SL PSS, or SL SSS), the “receiving” can be replaced with “detection”.
◆可选地，若配置或预配置为基于GNSS的同步，则所述“同步源优先级指示信息”可以指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，直接同步到gNB/eNB的UE，间接同步到gNB/eNB的UE，其他UE}中的一个值。◆Optionally, if configured or pre-configured for GNSS-based synchronization, the "synchronization source priority indication information" may indicate the set {UE synchronized directly to GNSS, UE synchronized indirectly to GNSS, synchronized directly to gNB/ eNB UE, indirectly synchronized to a value in gNB/eNB UE, other UE}.
其中，among them,
○可选地，若配置或预配置为定义基于gNB/eNB的同步源，则所述“其他UE”可以不包含所述“直接同步到GNSS的UE”，也不包含所述“间接同步到GNSS的UE”，也不包含所述“直接同步到gNB/eNB的UE”，也不包含所述“间接同步到gNB/eNB的UE”。○ Optionally, if configured or pre-configured to define a synchronization source based on gNB/eNB, the "other UE" may not include the "UE directly synchronized to GNSS" or the "indirectly synchronized to GNSS UE" does not include the "UE directly synchronized to the gNB/eNB", nor does it include the "UE synchronized indirectly to the gNB/eNB".
○可选地，若配置或预配置为不定义基于gNB/eNB的同步源，所述“其他UE”可以不包含所述“直接同步到 GNSS的UE”，也不包含所述“间接同步到GNSS的UE”。○ Optionally, if it is configured or pre-configured to not define a synchronization source based on gNB/eNB, the "other UE" may not include the "UE directly synchronized to GNSS" or the "indirectly synchronized to GNSS UE". GNSS UE".
◆可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则所述“同步源优先级指示信息”可以指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，直接同步到gNB/eNB的UE，间接同步到gNB/eNB的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, the "synchronization source priority indication information" can indicate the set {synchronize directly to GNSS The UE that is indirectly synchronized to the GNSS, the UE that is directly synchronized to the gNB/eNB, the UE that is indirectly synchronized to the gNB/eNB, and other UEs are a value in }. among them,
○可选地，所述“其他UE”可以不包含所述“直接同步到GNSS的UE”，也不包含所述“间接同步到GNSS的UE”，也不包含所述“直接同步到gNB/eNB的UE”，也不包含所述“间接同步到gNB/eNB的UE”。○ Optionally, the "other UEs" may not include the "UEs that are directly synchronized to GNSS", nor the "UEs that are synchronized indirectly to GNSS", nor the "UEs that are synchronized directly to gNB/ eNB UE" does not include the "UE indirectly synchronized to gNB/eNB".
◆可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则所述“同步源优先级指示信息”可以指示集合{同步到GNSS的UE，同步到gNB/eNB的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, the "synchronization source priority indication information" may indicate the set {synchronized to GNSS UE, the UE synchronized to the gNB/eNB, other UE). among them,
○可选地，所述“同步到GNSS的UE”可以是直接或间接同步到GNSS的UE。○ Optionally, the "UE synchronized to GNSS" may be a UE synchronized to GNSS directly or indirectly.
○可选地，所述“同步到gNB/eNB的UE”可以是直接或间接同步到gNB/eNB的UE。○ Optionally, the "UE synchronized to gNB/eNB" may be a UE synchronized to gNB/eNB directly or indirectly.
○可选地，所述“其他UE”可以不包含所述“同步到GNSS的UE”，也不包含所述“同步到gNB/eNB的UE”。○ Optionally, the "other UE" may not include the "UE synchronized to the GNSS", nor the "UE synchronized to the gNB/eNB".
◆可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则所述“同步源优先级指示信息”可以指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, the "synchronization source priority indication information" may indicate the set {direct synchronized UE , Indirectly synchronized UE, a value in other UE}. among them,
○可选地，所述“直接同步的UE”可以是直接同步到GNSS的UE或直接同步到gNB/eNB的UE。○ Optionally, the "directly synchronized UE" may be a UE directly synchronized to GNSS or a UE directly synchronized to gNB/eNB.
○可选地，所述“间接同步的UE”可以是间接同步到GNSS的UE或间接同步到gNB/eNB的UE。○ Optionally, the "indirectly synchronized UE" may be a UE that is indirectly synchronized to GNSS or a UE that is indirectly synchronized to a gNB/eNB.
○可选地，所述“其他UE”可以不包含所述“直接同步 的UE”，也不包含所述“间接同步的UE”。○ Optionally, the "other UE" may not include the "directly synchronized UE" or the "indirectly synchronized UE".
◆可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为不定义基于gNB/eNB的同步源，则所述“同步源优先级指示信息”可以指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is not to define a gNB/eNB-based synchronization source, the "synchronization source priority indication information" may indicate the set {synchronize directly to GNSS UE, indirectly synchronized to GNSS UE, a value in other UE}. among them,
○可选地，所述“其他UE”可以不包含所述“直接同步到GNSS的UE”，也不包含所述“间接同步到GNSS的UE”。○ Optionally, the "other UE" may not include the "UE directly synchronized to the GNSS", nor the "UE synchronized to the GNSS indirectly".
○可选地，所述“其他UE”可以不包含所述“直接同步到GNSS的UE”，也不包含所述“间接同步到GNSS的UE”，也不包含所述“直接同步到gNB/eNB的UE”，也不包含所述“间接同步到gNB/eNB的UE”。○ Optionally, the "other UEs" may not include the "UEs that are directly synchronized to GNSS", nor the "UEs that are synchronized indirectly to GNSS", nor the "UEs that are synchronized directly to gNB/ eNB UE" does not include the "UE indirectly synchronized to gNB/eNB".
◆可选地，若配置或预配置为基于gNB/eNB的同步，则所述“同步源优先级指示信息”可以指示集合{直接同步到gNB/eNB的UE，间接同步到gNB/eNB的UE，直接同步到GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, the "synchronization source priority indication information" can indicate the set {direct synchronization to the gNB/eNB UE, indirect synchronization to the gNB/eNB UE , The UE directly synchronized to GNSS, indirectly synchronized to the GNSS UE, a value in other UE}. among them,
○可选地，所述“其他UE”可以不包含所述“直接同步到gNB/eNB的UE”，也不包含所述“间接同步到gNB/eNB的UE”，也不包含所述“直接同步到GNSS的UE”，也不包含所述“间接同步到GNSS的UE”。○ Optionally, the "other UE" may not include the "UE directly synchronized to the gNB/eNB", nor the "UE synchronized to the gNB/eNB indirectly", nor the "directly synchronized UE". "UE synchronized to GNSS" does not include the "UE indirectly synchronized to GNSS".
◆可选地，若配置或预配置为基于gNB/eNB的同步，则所述“同步源优先级指示信息”可以指示集合{同步到gNB/eNB的UE，同步到GNSS的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, the "synchronization source priority indication information" can indicate the set {UE synchronized to gNB/eNB, UE synchronized to GNSS, other UE} A value in. among them,
○可选地，所述“同步到gNB/eNB的UE”可以是直接或间接同步到gNB/eNB的UE。○ Optionally, the "UE synchronized to gNB/eNB" may be a UE synchronized to gNB/eNB directly or indirectly.
○可选地，所述“同步到GNSS的UE”可以是直接或间接同步到GNSS的UE。○ Optionally, the "UE synchronized to GNSS" may be a UE synchronized to GNSS directly or indirectly.
○可选地，所述“其他UE”可以不包含所述“同步到gNB/eNB的UE”，也不包含所述“同步到GNSS的UE”。○ Optionally, the "other UE" may not include the "UE synchronized to the gNB/eNB", nor the "UE synchronized to the GNSS".
◆可选地，若配置或预配置为基于gNB/eNB的同步，则所述“同步源优先级指示信息”可以指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。其中，◆ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, the "synchronization source priority indication information" can indicate a value in the set {direct synchronization UE, indirect synchronization UE, other UE} . among them,
○可选地，所述“直接同步的UE”可以是直接同步到gNB/eNB的UE或直接同步到GNSS的UE。○ Optionally, the "directly synchronized UE" may be a UE directly synchronized to a gNB/eNB or a UE directly synchronized to a GNSS.
○可选地，所述“间接同步的UE”可以是间接同步到gNB/eNB的UE或间接同步到GNSS的UE。○ Optionally, the "indirectly synchronized UE" may be a UE that is indirectly synchronized to a gNB/eNB or a UE that is indirectly synchronized to a GNSS.
○可选地，所述“其他UE”可以不包含所述“直接同步的UE”，也不包含所述“间接同步的UE”。○ Optionally, the "other UE" may not include the "directly synchronized UE" or the "indirectly synchronized UE".
◆可选地，所述“同步源优先级指示信息”可以用1个比特表示，或者用2个比特表示，或者用3个比特表示，或者用4个比特表示。◆ Optionally, the "synchronization source priority indication information" can be represented by 1 bit, or by 2 bits, or by 3 bits, or by 4 bits.
◆可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以包含在所述PSBCH的有效载荷中。◆ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" may be included in the payload of the PSBCH.
其中，among them,
○可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以包含在由高层产生的PSBCH有效载荷(例如SL MIB)中。○ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" may be included in the PSBCH payload (for example, SL MIB) generated by the higher layer.
○可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以包含在除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)中。○ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" may be included in other PSBCH payloads (such as those generated by the physical layer) except the PSBCH payload generated by the higher layer. PSBCH payload).
○可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以和PSBCH有效载荷中的其他指示信息联合编码。此时，PSBCH有效载荷中的一部分比特不但用于指示所述“同步源优先级指示信息”，也用于指示其他指示信息。○ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" can be coded jointly with other indication information in the PSBCH payload. At this time, a part of the bits in the PSBCH payload is not only used to indicate the "synchronization source priority indication information", but also used to indicate other indication information.
◆可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以由所述SL SSID的值指示。例如，根据所述SL SSID的值确定N个预定义或预配置或配置的 SL SSID集合(记为S 0，S 1，...，S N-1)中的一个(记为S i，其中i的可能取值为0，1，...，N-1)，然后根据所述SL SSID集合S i(或者说根据所确定的i)确定所述“同步源优先级指示信息”。其中， ◆ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" may be indicated by the value of the SL SSID. For example, according to the value of the SL SSID, one of N predefined or pre-configured or configured SL SSID sets (denoted as S 0 , S 1 ,..., S N-1 ) (denoted as S i , The possible values of i are 0, 1, ..., N-1), and then the "synchronization source priority indication information" is determined according to the SL SSID set S i (or according to the determined i). among them,
○可选地，所述N个SL SSID集合S 0，S 1，...，S N-1互不相交(或者说互不重叠)。 ○ Optionally, the N SL SSID sets S 0 , S 1 , ..., S N-1 do not intersect each other (or do not overlap each other).
○可选地，确定所述SL SSID集合S i的准则是所述SL SSID的值属于所述SL SSID集合S i(或者说所述SL SSID的值在所述SL SSID集合S i中)。此时，可选地，所述SL SSID的值不属于S 0，S 1，...，S N-1中除S i外的任何其他集合。 ○ Alternatively, the determination criterion SL SSID set S i is the value of the SL SSID SL SSID belonging to the set (or the value of SL SSID in the SL SSID set in S i) S i. At this time, optionally, the value of the SL SSID does not belong to any other set except S i among S 0 , S 1 , ..., S N-1.
○可选地，S 0，S 1，...，S N-1中的每一个都是SL SSID的取值集合S(例如，S＝{0，1，...，671})的子集。可选地，S 1，S 2，...，S N的并集(S 0+S 1+...+S N-1)可以等于所述集合S，也可以是所述集合S的一个子集。 ○ Optionally, each of S 0 , S 1 ,..., S N-1 is the value set S of SL SSID (for example, S={0,1,...,671}) Subset. Optionally, the union of S 1 , S 2 ,..., S N (S 0 +S 1 +...+S N-1 ) may be equal to the set S, or may be the union of the set S A subset.
○可选地，N可以是一个预定义的值。例如N＝2，又如N＝3，又如N＝4，又如N＝5，又如N＝6，又如N＝7，又如N＝8。O Optionally, N can be a predefined value. For example, N=2, another example is N=3, another example is N=4, another example is N=5, another example is N=6, another example is N=7, another example is N=8.
○可选地，N可以取多个预定义的值中的一个，其中N的实际取值由一项或多项配置或预配置信息确定。例如，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则N＝5。又如，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则N＝3。又如，若配置或预配置为基于GNSS的同步，且配置或预配置为不定义基于gNB/eNB的同步源，则N＝3。又如，若配置或预配置为基于gNB/eNB的同步，则N＝5。又如，若配置或预配置为基于gNB/eNB的同步，则N＝3。○ Optionally, N can take one of multiple predefined values, where the actual value of N is determined by one or more configurations or pre-configuration information. For example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, then N=5. For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, then N=3. For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is that the gNB/eNB-based synchronization source is not defined, then N=3. For another example, if the configuration or pre-configuration is based on gNB/eNB synchronization, then N=5. For another example, if the configuration or pre-configuration is based on gNB/eNB synchronization, then N=3.
○可选地，S 0，S 1，...，S N-1中的一个或多个可以是预定义的集合。 ○ Optionally, one or more of S 0 , S 1 ,..., S N-1 may be a predefined set.
○可选地，S 0，S 1，...，S N-1中的一个或多个的定义由一项或多项配置或预配置信息确定。例如，S 1在配置或预配置为基于GNSS的同步时的定义可以不同于S 1在配置或预配置为基于gNB/eNB的同步时的定义。 ○ Optionally, the definition of one or more of S 0 , S 1 , ..., S N-1 is determined by one or more configuration or pre-configuration information. For example, S 1 or pre-configured in the configuration definition at the GNSS-based synchronization when the synchronization may be different from the definition in the S 1 or pre-configured based on the configuration gNB / eNB's.
○可选地，S 0，S 1，...，S N-1中的每一个分别包含一个或多个SL SSID。 ○ Optionally, each of S 0 , S 1 , ..., S N-1 respectively contains one or more SL SSIDs.
○可选地，S 0，S 1，...，S N-1中的每一个分别对应所述“同步源优先级指示信息”的取值集合中的一个值。例如，S 0对应所述“同步源优先级指示信息”的取值集合中最高优先级的同步源；又如，S 1对应所述“同步源优先级指示信息”的取值集合中次高优先级的同步源；……；S N-1对应所述“同步源优先级指示信息”的取值集合中最低优先级的同步源；等等。其中， ○ Optionally, each of S 0 , S 1 , ..., S N-1 corresponds to a value in the value set of the "synchronization source priority indication information". For example, S 0 corresponds to the synchronization source with the highest priority in the value set of the "synchronization source priority indication information"; for another example, S 1 corresponds to the second highest priority in the value set of the "synchronization source priority indication information" Priority synchronization source; ...; S N-1 corresponds to the lowest priority synchronization source in the value set of the "synchronization source priority indication information"; and so on. among them,
◇可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则S 0对应“直接同步到GNSS的UE”，S 1对应“间接同步到GNSS的UE”，S 2对应“直接同步到gNB/eNB的UE”，S 3对应“间接同步到gNB/eNB的UE”，S 4对应“其他UE”。 ◇Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, then S 0 corresponds to "UE directly synchronized to GNSS", and S 1 corresponds to "indirect synchronization" To GNSS UE", S 2 corresponds to "UE directly synchronized to gNB/eNB", S 3 corresponds to "UE synchronized to gNB/eNB indirectly", and S 4 corresponds to "other UE".
◇可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则S 0对应“同步到GNSS的UE”，S 1对应“同步到gNB/eNB的UE”，S 2对应“其他UE”。 ◇Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, S 0 corresponds to "UE synchronized to GNSS", and S 1 corresponds to "Sync to gNB /eNB's UE", S 2 corresponds to "other UE".
◇可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，则S 0对应“直接同步的UE”，S 1对应“间接同步的UE”，S 2对应“其他UE”。 ◇Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, then S 0 corresponds to "directly synchronized UE" and S 1 corresponds to "indirectly synchronized UE"", S 2 corresponds to "other UE".
◇可选地，若配置或预配置为基于GNSS的同步，且配置或预配置为不定义基于gNB/eNB的同步源，则S 0对应“直接同步的UE”，S 1对应“间接 同步的UE”，S 2对应“其他UE”。 ◇Optionally, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is not to define a synchronization source based on gNB/eNB, then S 0 corresponds to "directly synchronized UE" and S 1 corresponds to "indirect synchronized UE", S 2 corresponds to "other UE".
◇可选地，若配置或预配置为基于gNB/eNB的同步，则S 0对应“直接同步到gNB/eNB的UE”，S 1对应“间接同步到gNB/eNB的UE”，S 2对应“直接同步到GNSS的UE”，S 3对应“间接同步到GNSS的UE”，S 4对应“其他UE”。 ◇ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, S 0 corresponds to "UE directly synchronized to gNB/eNB", S 1 corresponds to "UE synchronized to gNB/eNB indirectly", and S 2 corresponds to "UE directly synchronized to GNSS", S 3 corresponds to "UE synchronized to GNSS indirectly", and S 4 corresponds to "other UE".
◇可选地，若配置或预配置为基于gNB/eNB的同步，则S 0对应“同步到gNB/eNB的UE”，S 1对应“同步到GNSS的UE”，S 2对应“其他UE”。 ◇ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, S 0 corresponds to "UE synchronized to gNB/eNB", S 1 corresponds to "UE synchronized to GNSS", and S 2 corresponds to "other UE" .
◇可选地，若配置或预配置为基于gNB/eNB的同步，则S 0对应“直接同步的UE”，S 1对应“间接同步的UE”，S 2对应“其他UE”。 ◇ Optionally, if the configuration or pre-configuration is based on gNB/eNB synchronization, S 0 corresponds to "directly synchronized UE", S 1 corresponds to "indirectly synchronized UE", and S 2 corresponds to "other UE".
○可选地，所述“同步源优先级指示信息”的一个或多个比特(包括全部比特)可以和SL SSID指示的其他指示信息联合编码。此时，SL SSID不但用于指示所述“同步源优先级指示信息”，也用于指示其他指示信息。○ Optionally, one or more bits (including all bits) of the "synchronization source priority indication information" can be coded jointly with other indication information indicated by the SL SSID. At this time, the SL SSID is not only used to indicate the "synchronization source priority indication information", but also used to indicate other indication information.
◆可选地，所述“同步源优先级指示信息”的一部分比特由PSBCH有效载荷指示，另一部分比特由SL SSID指示。◆ Optionally, a part of the "synchronization source priority indication information" is indicated by the PSBCH payload, and the other part is indicated by the SL SSID.
此外，在步骤S103，根据所述“同步源优先级指示信息”，确定所述同步源的优先级。In addition, in step S103, the priority of the synchronization source is determined according to the "synchronization source priority indication information".
例如，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，且所述“同步源优先级指示信息”指示“直接同步到GNSS的UE”，则所述同步源的优先级为P0(见表1)。For example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, and the "synchronization source priority indication information" indicates "UE directly synchronized to GNSS", then The priority of the synchronization source is P0 (see Table 1).
又如，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，且所述“同步源优先级指示信息”指示“同步到GNSS的UE”，则所述同步源的优先级为P1或P2(见表1)。此时需要通过其他指示信息进一步确定所述同步源的优先级是P1还是P2。For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, and the "synchronization source priority indication information" indicates "UE synchronized to GNSS", then The priority of the synchronization source is P1 or P2 (see Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P2.
又如，若配置或预配置为基于GNSS的同步，且配置或预配置为定义基于gNB/eNB的同步源，且所述“同步源优先级指示信息”指示“直接同步的UE”，则所述同步源的优先级为P1或P4(见表1)。此时需要 通过其他指示信息进一步确定所述同步源的优先级是P1还是P4。For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is to define a synchronization source based on gNB/eNB, and the "synchronization source priority indication information" indicates "directly synchronized UE", then The priority of the synchronization source is P1 or P4 (see Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P4.
又如，若配置或预配置为基于GNSS的同步，且配置或预配置为不定义基于gNB/eNB的同步源，且所述“同步源优先级指示信息”指示“间接同步到GNSS的UE”，则所述同步源的优先级为P2(见表1)。For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is not to define a synchronization source based on gNB/eNB, and the "synchronization source priority indication information" indicates "UE indirectly synchronized to GNSS" , The priority of the synchronization source is P2 (see Table 1).
又如，若配置或预配置为基于GNSS的同步，且配置或预配置为不定义基于gNB/eNB的同步源，且所述“同步源优先级指示信息”指示“其他UE”，则所述同步源的优先级为P6(见表1)。For another example, if the configuration or pre-configuration is GNSS-based synchronization, and the configuration or pre-configuration is not to define a synchronization source based on gNB/eNB, and the "synchronization source priority indication information" indicates "other UEs", then The priority of the synchronization source is P6 (see Table 1).
又如，若配置或预配置为基于gNB/eNB的同步，且所述“同步源优先级指示信息”指示“直接同步到GNSS的UE”，则所述同步源的优先级为P4(见表1)。For another example, if the configuration or pre-configuration is based on gNB/eNB synchronization, and the "synchronization source priority indication information" indicates "UE directly synchronized to GNSS", the priority of the synchronization source is P4 (see Table 1).
又如，若配置或预配置为基于gNB/eNB的同步，且所述“同步源优先级指示信息”指示“同步到gNB/eNB的UE”，则所述同步源的优先级为P1或P2(见表1)。此时需要通过其他指示信息进一步确定所述同步源的优先级是P1还是P2。For another example, if the configuration or pre-configuration is based on gNB/eNB synchronization, and the "synchronization source priority indication information" indicates "UE synchronized to gNB/eNB", the priority of the synchronization source is P1 or P2 (See Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P2.
又如，若配置或预配置为基于gNB/eNB的同步，且所述“同步源优先级指示信息”指示“直接同步的UE”，则所述同步源的优先级为P1或P4(见表1)。此时需要通过其他指示信息进一步确定所述同步源的优先级是P1还是P4。For another example, if the configuration or pre-configuration is based on gNB/eNB synchronization, and the "synchronization source priority indication information" indicates "direct synchronization UE", the priority of the synchronization source is P1 or P4 (see Table 1). At this time, other indication information needs to be used to further determine whether the priority of the synchronization source is P1 or P4.
这样，本发明的实施例一通过在SL SSB中，特别是通过SL SSID的取值指示同步源的优先级，使得UE在搜寻同步源的过程中尽早确定正在检测和/或接收的同步源的优先级，减小了确定同步源的时间。In this way, in the first embodiment of the present invention, the priority of the synchronization source is indicated in the SL SSB, especially the value of the SL SSID, so that the UE can determine the synchronization source that is being detected and/or received as early as possible in the process of searching for the synchronization source Priority, reducing the time to determine the synchronization source.
[实施例二][Example 2]
下面结合图4来说明本发明的实施例二的由用户设备执行的方法。The method executed by the user equipment in the second embodiment of the present invention will be described below with reference to FIG. 4.
图4是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。Fig. 4 is a flowchart showing a method executed by a user equipment according to the second embodiment of the present invention.
如图4所示，在本发明的实施例二中，用户设备UE执行的步骤包括：步骤S201和步骤S203。As shown in FIG. 4, in the second embodiment of the present invention, the steps performed by the user equipment UE include: step S201 and step S203.
具体地，在步骤S201，获取SL定时指示信息。Specifically, in step S201, SL timing indication information is acquired.
其中，among them,
●可选地，所述“SL定时指示信息”由SL SSB指示。其中，● Optionally, the "SL timing indication information" is indicated by SL SSB. among them,
◆可选地，所述SL SSB由一个UE(称为SyncRef UE)传输。◆ Optionally, the SL SSB is transmitted by one UE (called SyncRef UE).
◆可选地，通过接收所述SL SSB来获取由所述SL SSB指示的“SL定时指示信息”。◆ Optionally, obtain the "SL timing indication information" indicated by the SL SSB by receiving the SL SSB.
○可选地，所述SL SSB可以包含SL PSS、SL SSS和PSBCH。○ Optionally, the SL SSB may include SL PSS, SL SSS, and PSBCH.
○可选地，所述“接收SL SSB”可以指接收SL SSB中的部分或全部。例如，接收SL PSS。又如，接收SL PSS和SL SSS。又如，接收SL PSS、SL SSS和PSBCH。○ Optionally, the "receiving SL SSB" may refer to receiving part or all of the SL SSB. For example, receiving SL PSS. Another example is receiving SL PSS and SL SSS. Another example is receiving SL PSS, SL SSS and PSBCH.
其中，among them,
◇可选地，通过接收SL SSB可以确定下面中的一项或多项：◇ Optionally, one or more of the following can be determined by receiving the SL SSB:
Figure PCTCN2020118651-appb-000087
SL PSS序列。
Figure PCTCN2020118651-appb-000087
SL PSS sequence.
>可选地，SL PSS序列的总数为2。> Optionally, the total number of SL PSS sequences is 2.
>可选地，SL PSS序列的编号的集合为{0，1}。> Optionally, the set of numbers of the SL PSS sequence is {0, 1}.
Figure PCTCN2020118651-appb-000088
SL SSS序列。
Figure PCTCN2020118651-appb-000088
SL SSS sequence.
>可选地，SL SSS序列的总数为336。> Optionally, the total number of SL SSS sequences is 336.
>可选地，SL SSS序列的编号的集合为{0，1，...，335}。> Optionally, the set of numbers of the SL SSS sequence is {0, 1, ..., 335}.
Figure PCTCN2020118651-appb-000089
SL SSID。
Figure PCTCN2020118651-appb-000089
SL SSID.
>可选地，SL SSID的总数为672。> Optionally, the total number of SL SSIDs is 672.
>可选地，SL SSID的取值集合可以是{0，1，...，671}。> Optionally, the value set of SL SSID can be {0, 1, ..., 671}.
>可选地，SL SSID由SL PSS序列和SL SSS序列的组合方式确定。例如，若SL PSS的编号为0，且SL SSS的编号为0，则相应的SL SSID为0。> Optionally, the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
Figure PCTCN2020118651-appb-000090
PSBCH所使用的DMRS序列。
Figure PCTCN2020118651-appb-000090
DMRS sequence used by PSBCH.
Figure PCTCN2020118651-appb-000091
PSBCH有效载荷(PSBCH payload)。其中，
Figure PCTCN2020118651-appb-000091
PSBCH payload (PSBCH payload). among them,
>可选地，所述PSBCH有效载荷可以包括由高层产生的PSBCH有效载荷(例如SL MIB)和/或除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)。> Optionally, the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
◇可选地，对于有些信号和/或信道(例如SL PSS，又如SL SSS)，所述“接收”可以替换为“检测”。◇ Optionally, for some signals and/or channels (for example, SL PSS, or SL SSS), the “receiving” can be replaced with “detection”.
◆可选地，所述“SL定时指示信息”的一个或多个比特(包括全部比特)可以包含在所述PSBCH有效载荷中。其中，◆ Optionally, one or more bits (including all bits) of the "SL timing indication information" may be included in the PSBCH payload. among them,
○可选地，所述“SL定时指示信息”的一个或多个比特(包括全部比特)可以包含在由高层产生的PSBCH有效载荷(例如SL MIB)中。○ Optionally, one or more bits (including all bits) of the "SL timing indication information" may be included in the PSBCH payload (for example, SL MIB) generated by the higher layer.
○可选地，所述“SL定时指示信息”的一个或多个比特(包括全部比特)可以包含在除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)中。○ Optionally, one or more bits (including all bits) of the "SL timing indication information" may be included in other PSBCH payloads except the PSBCH payload generated by the higher layer (for example, the PSBCH payload generated by the physical layer is valid). Load).
○可选地，所述“SL定时指示信息”的一个或多个比特(包括全部比特)可以和PSBCH有效载荷中的其他指示信息联合编码。此时，PSBCH有效载荷中的一部分比特不但用于指示所述“SL定时指示信息”，也用于指示其他指示信息。○ Optionally, one or more bits (including all bits) of the "SL timing indication information" can be coded jointly with other indication information in the PSBCH payload. At this time, a part of the bits in the PSBCH payload is not only used to indicate the "SL timing indication information", but also used to indicate other indication information.
◆可选地，所述“SL定时指示信息”的一个或多个比特(包括全部比特)可以由所述SL SSB所包含的PSBCH的传输参数(例如DMRS序列)指示。◆ Optionally, one or more bits (including all bits) of the "SL timing indication information" may be indicated by a PSBCH transmission parameter (such as a DMRS sequence) included in the SL SSB.
●可选地，所述“SL定时指示信息”包含下面中的一项或多项：● Optionally, the "SL timing indication information" includes one or more of the following:
◆SL SSB周期在DFN周期内的编号(记为
Figure PCTCN2020118651-appb-000092
)。 ◆The number of SL SSB period in DFN period (denoted as
Figure PCTCN2020118651-appb-000092
).
其中，among them,
○可选地，所述“SL SSB周期在DFN周期内的编号”
Figure PCTCN2020118651-appb-000093
可以取集合
Figure PCTCN2020118651-appb-000094
中的一个值。其中，可选地，
Figure PCTCN2020118651-appb-000095
Figure PCTCN2020118651-appb-000096
其中T SLSSB的单位为帧。 ○ Optionally, the "number of the SL SSB period in the DFN period"
Figure PCTCN2020118651-appb-000093
Can take set
Figure PCTCN2020118651-appb-000094
A value in. Where, optionally,
Figure PCTCN2020118651-appb-000095
Figure PCTCN2020118651-appb-000096
The unit of T SLSSB is a frame.
◆SL SSB在SL SSB周期内的编号(记为
Figure PCTCN2020118651-appb-000097
)。其中， ◆SL SSB number in the SL SSB cycle (denoted as
Figure PCTCN2020118651-appb-000097
). among them,
○可选地，所述“SL SSB在SL SSB周期内的编号”
Figure PCTCN2020118651-appb-000098
可以取集合
Figure PCTCN2020118651-appb-000099
中的一个值。 ○ Optionally, the "SL SSB number in the SL SSB cycle"
Figure PCTCN2020118651-appb-000098
Can take set
Figure PCTCN2020118651-appb-000099
A value in.
◆SL SSB在DFN周期内的编号(记为
Figure PCTCN2020118651-appb-000100
)。其中， ◆SL SSB number in the DFN cycle (denoted as
Figure PCTCN2020118651-appb-000100
). among them,
○可选地，所述“SL SSB在DFN周期内的编号”
Figure PCTCN2020118651-appb-000101
可以取集合
Figure PCTCN2020118651-appb-000102
中的一个值。其中，可选地，
Figure PCTCN2020118651-appb-000103
Figure PCTCN2020118651-appb-000104
可选地，
Figure PCTCN2020118651-appb-000105
Figure PCTCN2020118651-appb-000106
其中T SLSSB的单位为帧。 ○ Optionally, the "SL SSB number in the DFN cycle"
Figure PCTCN2020118651-appb-000101
Can take set
Figure PCTCN2020118651-appb-000102
A value in. Where, optionally,
Figure PCTCN2020118651-appb-000103
Figure PCTCN2020118651-appb-000104
Optionally,
Figure PCTCN2020118651-appb-000105
Figure PCTCN2020118651-appb-000106
The unit of T SLSSB is a frame.
此外，在步骤S203，确定SL定时信息。例如，确定所述SL SSB的时域信息。又如，通过确定所述SL SSB的时域信息，确定所述SL链路上的SL定时信息。其中，In addition, in step S203, SL timing information is determined. For example, determine the time domain information of the SL SSB. For another example, by determining the time domain information of the SL SSB, the SL timing information on the SL link is determined. among them,
●可选地，所述SL SSB的时域信息可以包括下面中的一项或多项：● Optionally, the time domain information of the SL SSB may include one or more of the following:
◆直接帧号(记为n directframe)。可选地，n directframe＝n′ directframe，或者n directframe＝n′ directframe+Δ directframe，或者n directframe＝n′ directframe-Δ directframe。其中， ◆Direct frame number (denoted as n directframe ). Optionally, n directframe = n'directframe , or n directframe = n'directframe + Δ directframe , or n directframe = n'directframe- Δ directframe . among them,
○可选地，Δ directframe可以是一个预定义或者预配置或者配置的值。 ○ Optionally, Δ directframe can be a pre-defined or pre-configured or configured value.
○可选地，所述直接帧号可以是所述SL SSB所在的直接帧在DFN周期内的编号。例如，所述直接帧号可以取 集合
Figure PCTCN2020118651-appb-000107
中的一个值。其中，可选地，n′ directframe可以按下面的方式之一计算： ○ Optionally, the direct frame number may be the number of the direct frame in which the SL SSB is located in the DFN period. For example, the direct frame number can be set
Figure PCTCN2020118651-appb-000107
A value in. Among them, optionally, n'directframe can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000108
Figure PCTCN2020118651-appb-000109
◇
Figure PCTCN2020118651-appb-000108
Figure PCTCN2020118651-appb-000109
◇
Figure PCTCN2020118651-appb-000110
Figure PCTCN2020118651-appb-000111
◇
Figure PCTCN2020118651-appb-000110
Figure PCTCN2020118651-appb-000111
◇
Figure PCTCN2020118651-appb-000112
Figure PCTCN2020118651-appb-000113
◇
Figure PCTCN2020118651-appb-000112
Figure PCTCN2020118651-appb-000113
◇
Figure PCTCN2020118651-appb-000114
Figure PCTCN2020118651-appb-000115
◇
Figure PCTCN2020118651-appb-000114
Figure PCTCN2020118651-appb-000115
◆直接半帧号(记为n directhalfframe)。可选地，n directhalfframe＝n′ directhalfframe，或者n directhalfframe＝n′ directhalfframe+Δ directhalfframe，或者n directhalfframe＝n′ directhalfframe-Δ directhalfframe。其中， ◆Direct half-frame number (denoted as n directhalfframe ). Optionally, n directhalfframe = n'directhalfframe , or n directhalfframe = n'directhalfframe + Δ directhalfframe , or n directhalfframe = n'directhalfframe- Δ directhalfframe . among them,
○可选地，Δ directhalfframe可以是一个预定义或者预配置或者配置的值。 ○ Optionally, Δ directhalfframe can be a pre-defined or pre-configured or configured value.
○可选地，所述直接半帧号可以是所述SL SSB所在的直接半帧在直接帧内的编号。例如，所述直接半帧号可以取集合
Figure PCTCN2020118651-appb-000116
中的一个值。其中，可选地，n′ directhalfframe可以按下面的方式之一计 算： ○ Optionally, the direct field number may be the number of the direct field in which the SL SSB is located in the direct frame. For example, the direct field number can be set
Figure PCTCN2020118651-appb-000116
A value in. Wherein, optionally, n′ directhalfframe can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000117
Figure PCTCN2020118651-appb-000118
◇
Figure PCTCN2020118651-appb-000117
Figure PCTCN2020118651-appb-000118
◇
Figure PCTCN2020118651-appb-000119
Figure PCTCN2020118651-appb-000120
◇
Figure PCTCN2020118651-appb-000119
Figure PCTCN2020118651-appb-000120
◆直接子帧号(记为n directsubframe)。可选地，n directsubframe＝n′ directsubframe，或者n directsubframe＝n′ directsubframe+Δ directsubframe，或者n directsubframe＝n′ directsubframe-Δ directsubframe。其中， ◆Direct subframe number (denoted as n directsubframe ). Optionally, n directsubframe = n'directsubframe , or n directsubframe = n'directsubframe + Δ directsubframe , or n directsubframe = n'directsubframe- Δ directsubframe . among them,
○可选地，Δ directsubframe可以是一个预定义或者预配置或者配置的值。 ○ Optionally, Δ directsubframe can be a pre-defined or pre-configured or configured value.
○可选地，所述直接子帧号可以是所述SL SSB所在的直接子帧在直接半帧内的编号。例如，所述直接子帧号可以取集合
Figure PCTCN2020118651-appb-000121
中的一个值。其中，n′ directsubframe可以按下面的方式之一计算： ○ Optionally, the direct subframe number may be the number of the direct subframe in which the SL SSB is located in the direct half frame. For example, the direct subframe numbers can be set
Figure PCTCN2020118651-appb-000121
A value in. Among them, n′ directsubframe can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000122
Figure PCTCN2020118651-appb-000123
◇
Figure PCTCN2020118651-appb-000122
Figure PCTCN2020118651-appb-000123
◇
Figure PCTCN2020118651-appb-000124
Figure PCTCN2020118651-appb-000125
◇
Figure PCTCN2020118651-appb-000124
Figure PCTCN2020118651-appb-000125
○可选地，所述直接子帧号可以是所述SL SSB所在的直接子帧在直接帧内的编号。例如，所述直接子帧号可以取集合
Figure PCTCN2020118651-appb-000126
中的一个值。其 中，n′ directsubframe可以按下面的方式之一计算： ○ Optionally, the direct subframe number may be the number of the direct subframe in which the SL SSB is located in the direct frame. For example, the direct subframe numbers can be set
Figure PCTCN2020118651-appb-000126
A value in. Among them, n′ directsubframe can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000127
Figure PCTCN2020118651-appb-000128
◇
Figure PCTCN2020118651-appb-000127
Figure PCTCN2020118651-appb-000128
◇
Figure PCTCN2020118651-appb-000129
Figure PCTCN2020118651-appb-000130
◇
Figure PCTCN2020118651-appb-000129
Figure PCTCN2020118651-appb-000130
◆直接时隙号(记为n directslot)。可选地，n directslot＝n′ directslot，或者n directslot＝n′ directslot+Δ directslot，或者n directslot＝n′ directslot-Δ directslot。其中， ◆Direct slot number (denoted as n directslot ). Optionally, n directslot = n'directslot , or n directslot = n'directslot + Δ directslot , or n directslot = n'directslot- Δ directslot . among them,
○可选地，Δ directslot可以是一个预定义或者预配置或者配置的值。 ○ Optionally, Δ directslot can be a pre-defined or pre-configured or configured value.
○可选地，所述直接时隙号可以是所述SL SSB所在的直接时隙在直接子帧内的编号。例如，所述直接时隙号可以取集合
Figure PCTCN2020118651-appb-000131
中的一个值。其中，n′ directslot可以按下面的方式之一计算： ○ Optionally, the direct slot number may be the number in the direct subframe of the direct slot in which the SL SSB is located. For example, the direct time slot number can be set
Figure PCTCN2020118651-appb-000131
A value in. Among them, n′ directslot can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000132
Figure PCTCN2020118651-appb-000133
◇
Figure PCTCN2020118651-appb-000132
Figure PCTCN2020118651-appb-000133
◇
Figure PCTCN2020118651-appb-000134
Figure PCTCN2020118651-appb-000135
◇
Figure PCTCN2020118651-appb-000134
Figure PCTCN2020118651-appb-000135
◇
Figure PCTCN2020118651-appb-000136
Figure PCTCN2020118651-appb-000137
Figure PCTCN2020118651-appb-000138
◇
Figure PCTCN2020118651-appb-000136
Figure PCTCN2020118651-appb-000137
Figure PCTCN2020118651-appb-000138
○可选地，所述直接时隙号可以是所述SL SSB所在的直接时隙在直接半帧内的编号。例如，所述直接时隙号可以取集合
Figure PCTCN2020118651-appb-000139
中的一个值。其中，n′ directslot可以按下面的方式之一计算： ○ Optionally, the direct slot number may be the number in the direct half-frame of the direct slot in which the SL SSB is located. For example, the direct time slot number can be set
Figure PCTCN2020118651-appb-000139
A value in. Among them, n′ directslot can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000140
Figure PCTCN2020118651-appb-000141
◇
Figure PCTCN2020118651-appb-000140
Figure PCTCN2020118651-appb-000141
◇
Figure PCTCN2020118651-appb-000142
Figure PCTCN2020118651-appb-000143
◇
Figure PCTCN2020118651-appb-000142
Figure PCTCN2020118651-appb-000143
◇
Figure PCTCN2020118651-appb-000144
Figure PCTCN2020118651-appb-000145
◇
Figure PCTCN2020118651-appb-000144
Figure PCTCN2020118651-appb-000145
○可选地，所述直接时隙号可以是所述SL SSB所在的直接时隙在直接帧内的编号。例如，所述直接时隙号可以取集合
Figure PCTCN2020118651-appb-000146
中的一个值。其中，n′ directslot可以按下面的方式之一计算： ○ Optionally, the direct time slot number may be the number of the direct time slot in which the SL SSB is located in the direct frame. For example, the direct time slot number can be set
Figure PCTCN2020118651-appb-000146
A value in. Among them, n′ directslot can be calculated in one of the following ways:
◇
Figure PCTCN2020118651-appb-000147
Figure PCTCN2020118651-appb-000148
◇
Figure PCTCN2020118651-appb-000147
Figure PCTCN2020118651-appb-000148
◇
Figure PCTCN2020118651-appb-000149
Figure PCTCN2020118651-appb-000150
◇
Figure PCTCN2020118651-appb-000149
Figure PCTCN2020118651-appb-000150
◇
Figure PCTCN2020118651-appb-000151
Figure PCTCN2020118651-appb-000152
◇
Figure PCTCN2020118651-appb-000151
Figure PCTCN2020118651-appb-000152
●可选地，所述SL链路上的SL定时信息可以包括下面中的一项或多项：● Optionally, the SL timing information on the SL link may include one or more of the following:
◆任意一个直接帧在DFN周期内的编号。◆The number of any direct frame in the DFN period.
◆任意一个直接半帧在直接帧内的编号。◆The number of any direct field in the direct frame.
◆任意一个直接子帧在直接半帧内的编号。◆The number of any direct subframe in the direct half frame.
◆任意一个直接子帧在直接帧内的编号。◆The number of any direct subframe in the direct frame.
◆任意一个直接时隙在直接子帧内的编号。◆The number of any direct time slot in the direct subframe.
◆任意一个直接时隙在直接半帧内的编号。◆The number of any direct time slot in the direct half frame.
◆任意一个直接时隙在直接帧内的编号。◆The number of any direct time slot in the direct frame.
可选地，在本发明的实施例二中，在确定所述n′ directframe、所述n′ directhalfframe、所述n′ directsubframe以及所述n′ directslot中的一个或多个的公式中，
Figure PCTCN2020118651-appb-000153
可以替换为
Figure PCTCN2020118651-appb-000154
或者替换为
Figure PCTCN2020118651-appb-000155
其中，可选地，
Figure PCTCN2020118651-appb-000156
可以是一个预定义或者预配置或者配置的值。 Alternatively, in the second embodiment of this invention, in determining the n 'directframe, said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of,
Figure PCTCN2020118651-appb-000153
Can be replaced with
Figure PCTCN2020118651-appb-000154
Or replace with
Figure PCTCN2020118651-appb-000155
Where, optionally,
Figure PCTCN2020118651-appb-000156
It can be a pre-defined or pre-configured or configured value.
可选地，在本发明的实施例二中，在确定所述n′ directframe、所述n′ directhalfframe、所述n′ directsubframe以及所述n′ directslot中的一个或多个的公式中，
Figure PCTCN2020118651-appb-000157
可以替换为
Figure PCTCN2020118651-appb-000158
或者替换为
Figure PCTCN2020118651-appb-000159
其中，可选地，
Figure PCTCN2020118651-appb-000160
可以是一 个预定义或者预配置或者配置的值。 Alternatively, in the second embodiment of this invention, in determining the n 'directframe, said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of,
Figure PCTCN2020118651-appb-000157
Can be replaced with
Figure PCTCN2020118651-appb-000158
Or replace with
Figure PCTCN2020118651-appb-000159
Where, optionally,
Figure PCTCN2020118651-appb-000160
It can be a pre-defined or pre-configured or configured value.
可选地，在本发明的实施例二中，在确定所述n′ directframe、所述n′ directhalfframe、所述n′ directsubframe以及所述n′ directslot中的一个或多个的公式中，
Figure PCTCN2020118651-appb-000161
可以替换为x，或者替换为
Figure PCTCN2020118651-appb-000162
其中x是任意表达式(在适用的情况下)。例如，
Figure PCTCN2020118651-appb-000163
可以替换为
Figure PCTCN2020118651-appb-000164
或者替换为
Figure PCTCN2020118651-appb-000165
Alternatively, in the second embodiment of this invention, in determining the n 'directframe, said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of,
Figure PCTCN2020118651-appb-000161
Can be replaced with x, or with
Figure PCTCN2020118651-appb-000162
Where x is an arbitrary expression (where applicable). E.g,
Figure PCTCN2020118651-appb-000163
Can be replaced with
Figure PCTCN2020118651-appb-000164
Or replace with
Figure PCTCN2020118651-appb-000165
可选地，在本发明的实施例二中，在确定所述n′ directframe、所述n′ directhalfframe、所述n′ directsubframe以及所述n′ directslot中的一个或多个的公式中，
Figure PCTCN2020118651-appb-000166
可以替换为
Figure PCTCN2020118651-appb-000167
其中，可选地，N Rep可以是一个预定义或者预配置或者配置的值；可选地，N Rep表示SL SSB周期内的“重复次数”，例如，此时，所述一个SL SSB周期内的
Figure PCTCN2020118651-appb-000168
个SL SSB传输可以重复N Rep次(包括第一次)，即一个SL SSB周期内的总的SL SSB传输次数可以是
Figure PCTCN2020118651-appb-000169
Alternatively, in the second embodiment of this invention, in determining the n 'directframe, said n' directhalfframe, said n 'directsubframe and said n' in formula directslot one or more of,
Figure PCTCN2020118651-appb-000166
Can be replaced with
Figure PCTCN2020118651-appb-000167
Wherein, optionally, N Rep may be a predefined or pre-configured or configured value; optionally, N Rep represents the "number of repetitions" in the SL SSB period, for example, at this time, in the one SL SSB period of
Figure PCTCN2020118651-appb-000168
A SL SSB transmission can be repeated N Rep times (including the first time), that is, the total number of SL SSB transmissions in one SL SSB cycle can be
Figure PCTCN2020118651-appb-000169
可选地，在本发明的实施例二中，所述“SL SSB周期在DFN周期内的编号”
Figure PCTCN2020118651-appb-000170
可以由所述“SL SSB在DFN周期内的编号”
Figure PCTCN2020118651-appb-000171
确定。例如，
Figure PCTCN2020118651-appb-000172
此时，可选地，所述SL定时信息由所述“SL SSB周期在DFN周期内的编号”
Figure PCTCN2020118651-appb-000173
和/或其他信息进一步确定；可选地，所述“SL定时指示信息”不包含所述“SL SSB周期在DFN周期内的编号”
Figure PCTCN2020118651-appb-000174
可选地，所述“SL定时指示信息”包含所述“SL SSB在DFN周期内的编号”
Figure PCTCN2020118651-appb-000175
Optionally, in the second embodiment of the present invention, the "number of the SL SSB period in the DFN period"
Figure PCTCN2020118651-appb-000170
Can be determined by the "SL SSB number in the DFN cycle"
Figure PCTCN2020118651-appb-000171
determine. E.g,
Figure PCTCN2020118651-appb-000172
At this time, optionally, the SL timing information is composed of the "number of the SL SSB period in the DFN period"
Figure PCTCN2020118651-appb-000173
And/or other information is further determined; optionally, the "SL timing indication information" does not include the "number of the SL SSB period in the DFN period"
Figure PCTCN2020118651-appb-000174
Optionally, the "SL timing indication information" includes the "SL SSB number in the DFN period"
Figure PCTCN2020118651-appb-000175
可选地，在本发明的实施例二中，所述“SL SSB在SL SSB周期内的编号”
Figure PCTCN2020118651-appb-000176
可以由所述“SL SSB在DFN周期内的编号”
Figure PCTCN2020118651-appb-000177
确定。例如，
Figure PCTCN2020118651-appb-000178
此时，可选地，所述SL定时信息由所述“SL SSB周期在DFN周期内的编号”
Figure PCTCN2020118651-appb-000179
和/或其他信息进一步确定；可选地，所述“SL定时指示信息”不包含所述“SL SSB在SL SSB周期内的编号”
Figure PCTCN2020118651-appb-000180
可选地，所述“SL定时指示信息”包含所述“SL SSB在DFN周期内的编号”
Figure PCTCN2020118651-appb-000181
Optionally, in the second embodiment of the present invention, the "SL SSB number in the SL SSB period"
Figure PCTCN2020118651-appb-000176
Can be determined by the "SL SSB number in the DFN cycle"
Figure PCTCN2020118651-appb-000177
determine. E.g,
Figure PCTCN2020118651-appb-000178
At this time, optionally, the SL timing information is composed of the "number of the SL SSB period in the DFN period"
Figure PCTCN2020118651-appb-000179
And/or other information is further determined; optionally, the "SL timing indication information" does not include the "SL SSB number in the SL SSB period"
Figure PCTCN2020118651-appb-000180
Optionally, the "SL timing indication information" includes the "SL SSB number in the DFN period"
Figure PCTCN2020118651-appb-000181
可选地，在本发明的实施例二中，
Figure PCTCN2020118651-appb-000182
可以替换为
Figure PCTCN2020118651-appb-000183
Optionally, in the second embodiment of the present invention,
Figure PCTCN2020118651-appb-000182
Can be replaced with
Figure PCTCN2020118651-appb-000183
可选地，在本发明的实施例二中，
Figure PCTCN2020118651-appb-000184
可以替换为
Figure PCTCN2020118651-appb-000185
Optionally, in the second embodiment of the present invention,
Figure PCTCN2020118651-appb-000184
Can be replaced with
Figure PCTCN2020118651-appb-000185
可选地，在本发明的实施例二中，
Figure PCTCN2020118651-appb-000186
可以替换为
Figure PCTCN2020118651-appb-000187
Optionally, in the second embodiment of the present invention,
Figure PCTCN2020118651-appb-000186
Can be replaced with
Figure PCTCN2020118651-appb-000187
可选地，在本发明的实施例二中，
Figure PCTCN2020118651-appb-000188
可以替换为
Figure PCTCN2020118651-appb-000189
Optionally, in the second embodiment of the present invention,
Figure PCTCN2020118651-appb-000188
Can be replaced with
Figure PCTCN2020118651-appb-000189
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000190
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000190
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000191
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000191
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000192
Figure PCTCN2020118651-appb-000193
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000192
Figure PCTCN2020118651-appb-000193
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000194
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000194
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000195
Figure PCTCN2020118651-appb-000196
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000195
Figure PCTCN2020118651-appb-000196
可选地，在本发明的实施例二中，作为一个例子，
Figure PCTCN2020118651-appb-000197
Figure PCTCN2020118651-appb-000198
Optionally, in the second embodiment of the present invention, as an example,
Figure PCTCN2020118651-appb-000197
Figure PCTCN2020118651-appb-000198
可选地，在本发明的实施例二中，T SLSSB的单位可以是毫秒。例如，T SLSSB＝160毫秒。 Optionally, in the second embodiment of the present invention, the unit of T SLSSB may be milliseconds. For example, T SLSSB = 160 milliseconds.
可选地，在本发明的实施例二中，T SLSSB的单位可以是帧。例如，T SLSSB＝16帧。 Optionally, in the second embodiment of the present invention, the unit of T SLSSB may be a frame. For example, T SLSSB = 16 frames.
可选地，在本发明的实施例二中，在不同地方出现的T SLSSB的单位可以不一样。 Optionally, in the second embodiment of the present invention, the units of T SLSSB appearing in different places may be different.
这样，本发明的实施例二通过利用SSB在DFN周期内出现的规律，在SL MIB和/或PSBCH有效载荷和/或PSBCH的传输参数中指示相应的SSB在DFN周期内的信息，使得UE可以从所述SSB在DFN周期内的信息中推导出DFN，而不需要直接在SL MIB中指示完整的DFN信息(例如取值0到1023，需要10比特)，提高了时域信息指示的效率。In this way, the second embodiment of the present invention uses the rule that SSB appears in the DFN period to indicate the information of the corresponding SSB in the DFN period in the SL MIB and/or PSBCH payload and/or PSBCH transmission parameters, so that the UE can The DFN is derived from the information of the SSB in the DFN period, instead of directly indicating complete DFN information in the SL MIB (for example, a value of 0 to 1023, 10 bits are required), which improves the efficiency of time domain information indication.
[实施例三][Example Three]
下面结合图5来说明本发明的实施例三的由用户设备执行的方法。The method executed by the user equipment in the third embodiment of the present invention will be described below with reference to FIG. 5.
图5是示出了根据本发明的实施例三的由用户设备执行的方法的流程图。Fig. 5 is a flowchart showing a method executed by a user equipment according to the third embodiment of the present invention.
如图5所示，在本发明的实施例三中，用户设备UE执行的步骤包括：步骤S301和步骤S303。As shown in FIG. 5, in the third embodiment of the present invention, the steps performed by the user equipment UE include: step S301 and step S303.
具体地，在步骤S301，获取SL时域资源指示信息。Specifically, in step S301, the SL time domain resource indication information is obtained.
其中，among them,
●可选地，所述“SL时域资源指示信息”由SL SSB指示。其中，● Optionally, the "SL time domain resource indication information" is indicated by SL SSB. among them,
◆可选地，所述SL SSB由一个UE(称为SyncRef UE)传输。◆ Optionally, the SL SSB is transmitted by one UE (called SyncRef UE).
◆可选地，通过接收所述SL SSB来获取由所述SL SSB指示的“SL时域资源指示信息”。◆ Optionally, obtain the "SL time domain resource indication information" indicated by the SL SSB by receiving the SL SSB.
○可选地，所述SL SSB可以包含SL PSS、SL SSS和PSBCH。○ Optionally, the SL SSB may include SL PSS, SL SSS, and PSBCH.
○可选地，所述“接收SL SSB”可以指接收SL SSB中的部分或全部。例如，接收SL PSS。又如，接收SL PSS和SL SSS。又如，接收SL PSS、SL SSS和PSBCH。○ Optionally, the "receiving SL SSB" may refer to receiving part or all of the SL SSB. For example, receiving SL PSS. Another example is receiving SL PSS and SL SSS. Another example is receiving SL PSS, SL SSS and PSBCH.
其中，among them,
◇可选地，通过接收SL SSB可以确定下面中的一项或多项：◇ Optionally, one or more of the following can be determined by receiving the SL SSB:
Figure PCTCN2020118651-appb-000199
SL PSS序列。
Figure PCTCN2020118651-appb-000199
SL PSS sequence.
>可选地，SL PSS序列的总数为2。> Optionally, the total number of SL PSS sequences is 2.
>可选地，SL PSS序列的编号的集合为{0，1}。> Optionally, the set of numbers of the SL PSS sequence is {0, 1}.
Figure PCTCN2020118651-appb-000200
SL SSS序列。
Figure PCTCN2020118651-appb-000200
SL SSS sequence.
>可选地，SL SSS序列的总数为336。> Optionally, the total number of SL SSS sequences is 336.
>可选地，SL SSS序列的编号的集合为{0，1，...，335}。> Optionally, the set of numbers of the SL SSS sequence is {0, 1, ..., 335}.
Figure PCTCN2020118651-appb-000201
SL SSID。
Figure PCTCN2020118651-appb-000201
SL SSID.
>可选地，SL SSID的总数为672。> Optionally, the total number of SL SSIDs is 672.
>可选地，SL SSID的取值集合可以是{0，1，...，671}。> Optionally, the value set of SL SSID can be {0, 1, ..., 671}.
>可选地，SL SSID由SL PSS序列和SL SSS序列的组合方式确定。例如，若SL PSS的编号为0，且SL SSS的编号为0，则相应的SL SSID为0。> Optionally, the SL SSID is determined by the combination of the SL PSS sequence and the SL SSS sequence. For example, if the number of SL PSS is 0, and the number of SL SSS is 0, the corresponding SL SSID is 0.
Figure PCTCN2020118651-appb-000202
PSBCH所使用的DMRS序列。
Figure PCTCN2020118651-appb-000202
DMRS sequence used by PSBCH.
Figure PCTCN2020118651-appb-000203
PSBCH有效载荷(PSBCH payload)。其中，
Figure PCTCN2020118651-appb-000203
PSBCH payload (PSBCH payload). among them,
>可选地，所述PSBCH有效载荷可以包括由高层产生的PSBCH有效载荷(例 如SL MIB)和/或除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)。> Optionally, the PSBCH payload may include a PSBCH payload (such as SL MIB) generated by a higher layer and/or other PSBCH payloads other than the PSBCH payload generated by a higher layer (such as a PSBCH valid load generated by the physical layer). Load).
◇可选地，对于有些信号和/或信道(例如SL PSS，又如SL SSS)，所述“接收”可以替换为“检测”。◇ Optionally, for some signals and/or channels (for example, SL PSS, or SL SSS), the “receiving” can be replaced with “detection”.
◆可选地，所述“SL时域资源指示信息”的一个或多个比特(包括全部比特)可以包含在所述PSBCH有效载荷中。其中，◆ Optionally, one or more bits (including all bits) of the "SL time domain resource indication information" may be included in the PSBCH payload. among them,
○可选地，所述“SL时域资源指示信息”的一个或多个比特(包括全部比特)可以包含在由高层产生的PSBCH有效载荷(例如包括SL MIB)中。○ Optionally, one or more bits (including all bits) of the "SL time domain resource indication information" may be included in the PSBCH payload (for example, including SL MIB) generated by a higher layer.
○可选地，所述“SL时域资源指示信息”的一个或多个比特(包括全部比特)可以包含在除去由高层产生的PSBCH有效载荷外的其他PSBCH有效载荷(例如由物理层产生的PSBCH有效载荷)中。○ Optionally, one or more bits (including all bits) of the "SL time domain resource indication information" may be included in other PSBCH payloads (such as those generated by the physical layer) except for the PSBCH payload generated by the higher layer. PSBCH payload).
○可选地，所述“SL时域资源指示信息”的一个或多个比特(包括全部比特)可以和PSBCH有效载荷中的其他指示信息联合编码。此时，PSBCH有效载荷中的一部分比特不但用于指示所述“SL时域资源指示信息”，也用于指示其他指示信息。○ Optionally, one or more bits (including all bits) of the "SL time domain resource indication information" can be coded jointly with other indication information in the PSBCH payload. At this time, a part of the bits in the PSBCH payload is not only used to indicate the "SL time domain resource indication information", but also used to indicate other indication information.
◆可选地，所述“SL时域资源指示信息”的一个或多个比特(包括全部比特)可以由所述SL SSB所包含的PSBCH的传输参数(例如DMRS序列)指示。◆ Optionally, one or more bits (including all bits) of the "SL time domain resource indication information" may be indicated by a PSBCH transmission parameter (for example, a DMRS sequence) included in the SL SSB.
●可选地，所述“SL时域资源指示信息”可以用I TD个比特表示。其中， ● Optionally, the "SL time domain resource indication information" can be represented by I TD bits. among them,
◆可选地，I TD可以预定义为集合R1中的一个值，或者预配置或配置为所述集合R1中的一个值，或者预配置或配置为所述集合R1的任意一个子集中的一个值。其中，可选地，所述集合R1可以是下面中的一项： ◆ Optionally, I TD can be pre-defined as a value in the set R1, or pre-configured or configured as a value in the set R1, or pre-configured or configured as a value in any subset of the set R1 value. Wherein, optionally, the set R1 may be one of the following:
○{1，2，...，16}。○ {1, 2,..., 16}.
○{1，2，...，14}。○ {1, 2,..., 14}.
○{1，2，...，12}。○ {1, 2,..., 12}.
○{1，2，...，10}。○ {1, 2,..., 10}.
○{1，2，...，8}。○ {1, 2,..., 8}.
○{1，2，...，6}。○ {1, 2,..., 6}.
○{1，2，...，5}。○ {1, 2,..., 5}.
○{1，2，3，4}。○ {1, 2, 3, 4}.
○{1，2，3}。○ {1, 2, 3}.
◆可选地，所述“SL时域资源指示信息”可以取集合
Figure PCTCN2020118651-appb-000204
Figure PCTCN2020118651-appb-000205
中的一个值，或者取所述集合R2的任意一个子集中的一个值。 ◆ Optionally, the "SL time domain resource indication information" can be set
Figure PCTCN2020118651-appb-000204
Figure PCTCN2020118651-appb-000205
A value in R2, or a value in any subset of the set R2.
●可选地，所述“SL时域资源指示信息”是对SL时域资源配置信息列表的索引。其中，● Optionally, the "SL time domain resource indication information" is an index to the SL time domain resource configuration information list. among them,
◆可选地，所述“SL时域资源配置信息列表”最多可以包含N TD，max项SL时域资源配置信息(或者说，所述“SL时域资源配置信息列表”的最大长度可以是N TD，max)。其中， ◆ Optionally, the "SL time domain resource configuration information list" can contain at most N TD, max items SL time domain resource configuration information (or in other words, the maximum length of the "SL time domain resource configuration information list" can be N TD, max ). among them,
○可选地，N TD，max可以预定义为集合R3中的一个值，或者预配置或配置为所述集合R3中的一个值，或者预配置或配置为所述集合R3的任意一个子集中的一个值。其中，可选地，所述集合R3可以是下面中的一项： ○ Optionally, N TD, max can be pre-defined as a value in the set R3, or pre-configured or configured as a value in the set R3, or pre-configured or configured as any subset of the set R3 A value of. Wherein, optionally, the set R3 may be one of the following:
◇{1，2，...，65536}。◇{1, 2,..., 65536}.
◇{1，2，...，16384}。◇{1, 2,..., 16384}.
◇{1，2，...，4096}。◇{1, 2,..., 4096}.
◇{1，2，...，1024}。◇{1, 2,...,1024}.
◇{1，2，...，512}。◇{1, 2,..., 512}.
◇{1，2，...，256}。◇{1, 2,..., 256}.
◇{1，2，...，128}。◇{1, 2,..., 128}.
◇{1，2，...，64}。◇{1, 2,..., 64}.
◇{1，2，...，32}。◇{1, 2,..., 32}.
◇{1，2，...，30}。◇{1, 2,..., 30}.
◇{1，2，...，28}。◇{1, 2,..., 28}.
◇{1，2，...，26}。◇{1, 2,..., 26}.
◇{1，2，...，24}。◇{1, 2,..., 24}.
◇{1，2，...，22}。◇{1, 2,..., 22}.
◇{1，2，...，20}。◇{1, 2,..., 20}.
◇{1，2，...，18}。◇{1, 2,..., 18}.
◇{1，2，...，16}。◇{1, 2,..., 16}.
◇{1，2，...，14}。◇{1, 2,..., 14}.
◇{1，2，...，12}。◇{1, 2,..., 12}.
◇{1，2，...，10}。◇{1, 2,..., 10}.
◇{1，2，...，8}。◇{1, 2,..., 8}.
○可选地，
Figure PCTCN2020118651-appb-000206
○ Optionally,
Figure PCTCN2020118651-appb-000206
◆可选地，所述“SL时域资源配置信息列表”中的每一项SL时域资源配置信息可以包含下面中的一项或多项：◆ Optionally, each item of SL time domain resource configuration information in the "SL time domain resource configuration information list" may include one or more of the following:
○SL时隙位图。其中，○ SL time slot bitmap. among them,
◇可选地，所述SL时隙位图的大小(或者说宽度，或者说长度，记为B SL)的单位可以是比特。 ◇ Optionally, the unit of the size (or width or length, denoted as B SL ) of the SL time slot bitmap may be bits.
◇可选地，所述SL时隙位图的大小可以预定义为集合R4中的一个值，或者配置或预配置为所述集合R4中的一个值，或者预配置或配置为所述集合R4的任意一个子集中的一个值。所述集合R4可以是下面中的一项：◇ Optionally, the size of the SL time slot bitmap can be pre-defined as a value in the set R4, or configured or pre-configured as a value in the set R4, or pre-configured or configured as the set R4 A value in any subset of. The set R4 may be one of the following:
Figure PCTCN2020118651-appb-000207
{1，2，...，1024}。
Figure PCTCN2020118651-appb-000207
{1, 2, ..., 1024}.
Figure PCTCN2020118651-appb-000208
{1，2，...，512}。
Figure PCTCN2020118651-appb-000208
{1, 2,..., 512}.
Figure PCTCN2020118651-appb-000209
{1，2，...，256}。
Figure PCTCN2020118651-appb-000209
{1, 2,..., 256}.
Figure PCTCN2020118651-appb-000210
{1，2，...，128}。
Figure PCTCN2020118651-appb-000210
{1, 2,..., 128}.
Figure PCTCN2020118651-appb-000211
{1，2，...，64}。
Figure PCTCN2020118651-appb-000211
{1, 2,..., 64}.
Figure PCTCN2020118651-appb-000212
{1，2，...，32}。
Figure PCTCN2020118651-appb-000212
{1, 2,..., 32}.
Figure PCTCN2020118651-appb-000213
{1，2，...，30}。
Figure PCTCN2020118651-appb-000213
{1, 2,..., 30}.
Figure PCTCN2020118651-appb-000214
{1，2，...，28}。
Figure PCTCN2020118651-appb-000214
{1, 2,..., 28}.
Figure PCTCN2020118651-appb-000215
{1，2，...，26}。
Figure PCTCN2020118651-appb-000215
{1, 2,..., 26}.
Figure PCTCN2020118651-appb-000216
{1，2，...，24}。
Figure PCTCN2020118651-appb-000216
{1, 2,..., 24}.
Figure PCTCN2020118651-appb-000217
{1，2，...，22}。
Figure PCTCN2020118651-appb-000217
{1, 2,..., 22}.
Figure PCTCN2020118651-appb-000218
{1，2，...，20}。
Figure PCTCN2020118651-appb-000218
{1, 2,..., 20}.
Figure PCTCN2020118651-appb-000219
{1，2，...，18}。
Figure PCTCN2020118651-appb-000219
{1, 2,..., 18}.
Figure PCTCN2020118651-appb-000220
{1，2，...，16}。
Figure PCTCN2020118651-appb-000220
{1, 2,..., 16}.
Figure PCTCN2020118651-appb-000221
{1，2，...，14}。
Figure PCTCN2020118651-appb-000221
{1, 2,..., 14}.
Figure PCTCN2020118651-appb-000222
{1，2，...，12}。
Figure PCTCN2020118651-appb-000222
{1, 2,..., 12}.
Figure PCTCN2020118651-appb-000223
{1，2，...，10}。
Figure PCTCN2020118651-appb-000223
{1, 2,..., 10}.
Figure PCTCN2020118651-appb-000224
{1，2，...，8}。
Figure PCTCN2020118651-appb-000224
{1, 2,..., 8}.
◇可选地，所述SL时隙位图的大小的取值或取值集合可以与相应的SL链路或SL载波或SL BWP或资源池所配置的子载波间隔和/或CP长度有关。例如，不同子载波间隔和/或CP长度对应不同的SL时隙位图的大小的取值或取值集合。◇ Optionally, the value or value set of the size of the SL time slot bitmap may be related to the subcarrier interval and/or CP length configured by the corresponding SL link or SL carrier or SL BWP or resource pool. For example, different subcarrier intervals and/or CP lengths correspond to different values or value sets of the size of the SL time slot bitmap.
○SL起始(starting)OFDM符号(记为n starting)。其中， ○SL starting OFDM symbol (denoted as n starting ). among them,
◇可选地，所述SL起始OFDM符号的值是一个时隙内的OFDM符号的编号。◇ Optionally, the value of the SL start OFDM symbol is the number of the OFDM symbol in one slot.
◇可选地，所述SL起始OFDM符号可以预定义为集合R5中的任意一个值，或者配置或预配置为所述集合R5的任意一个子集中的一个值。其中，◇ Optionally, the SL start OFDM symbol may be predefined as any value in the set R5, or configured or pre-configured as a value in any subset of the set R5. among them,
Figure PCTCN2020118651-appb-000225
对于正常CP(NCP，Normal CP)，所述集合R5可以等于{1，2，...，13}。
Figure PCTCN2020118651-appb-000225
For normal CP (NCP, Normal CP), the set R5 may be equal to {1, 2, ..., 13}.
Figure PCTCN2020118651-appb-000226
对于扩展CP(ECP，Extended CP)，所述集合R5可以等于{1，2，...，11}。
Figure PCTCN2020118651-appb-000226
For extended CP (ECP, Extended CP), the set R5 may be equal to {1, 2, ..., 11}.
◇可选地，所述SL起始OFDM符号的取值或取值集合可以与所述SL载波所配置的子载波间隔和/或CP长度有关。例如，不同子载波间隔和/或CP 长度对应不同的SL起始OFDM符号的取值或取值集合。◇ Optionally, the value or value set of the SL start OFDM symbol may be related to the subcarrier interval and/or CP length configured by the SL carrier. For example, different subcarrier intervals and/or CP lengths correspond to different values or value sets of the SL starting OFDM symbols.
○SL结束(ending)OFDM符号(记为n ending)。其中， O SL ending OFDM symbol (denoted as n ending ). among them,
◇可选地，所述SL结束OFDM符号的值是一个时隙内的OFDM符号的编号。◇ Optionally, the value of the SL ending OFDM symbol is the number of the OFDM symbol in one slot.
◇可选地，所述SL结束OFDM符号可以预定义为集合R6中的任意一个值，或者配置或预配置为所述集合R6的任意一个子集中的一个值。其中，◇ Optionally, the SL end OFDM symbol may be predefined as any value in the set R6, or configured or pre-configured as a value in any subset of the set R6. among them,
Figure PCTCN2020118651-appb-000227
对于正常CP(NCP，Normal CP)，所述集合R6可以等于{1，2，...，13}。
Figure PCTCN2020118651-appb-000227
For normal CP (NCP, Normal CP), the set R6 may be equal to {1, 2, ..., 13}.
Figure PCTCN2020118651-appb-000228
对于扩展CP(ECP，Extended CP)，所述集合R6可以等于{1，2，...，11}。
Figure PCTCN2020118651-appb-000228
For extended CP (ECP, Extended CP), the set R6 may be equal to {1, 2, ..., 11}.
◇可选地，所述SL结束OFDM符号的取值或取值集合可以与所述SL载波所配置的子载波间隔和/或CP长度有关。例如，不同子载波间隔和/或CP长度对应不同的SL结束OFDM符号的取值或取值集合。◇ Optionally, the value or value set of the SL ending OFDM symbol may be related to the subcarrier interval and/or CP length configured by the SL carrier. For example, different subcarrier intervals and/or CP lengths correspond to different values or value sets of SL ending OFDM symbols.
○SL时域资源周期(记为T SL)。其中， ○SL time domain resource period (denoted as T SL ) among them,
◇可选地，所述SL时域资源周期的单位可以是一个或多个符号。◇ Optionally, the unit of the SL time domain resource period may be one or more symbols.
◇可选地，所述SL时域资源周期的单位可以是一个或多个时隙。◇ Optionally, the unit of the SL time domain resource period may be one or more time slots.
◇可选地，所述SL时域资源周期的单位可以是一个或多个子帧。◇ Optionally, the unit of the SL time domain resource period may be one or more subframes.
◇可选地，所述SL时域资源周期的单位可以是一个或多个帧。◇ Optionally, the unit of the SL time domain resource period may be one or more frames.
◇可选地，所述SL时域资源周期的单位可以是一个或多个毫秒。◇ Optionally, the unit of the SL time domain resource period may be one or more milliseconds.
◇可选地，所述SL时域资源周期的单位可以是一个或多个秒。◇ Optionally, the unit of the SL time domain resource period may be one or more seconds.
◇可选地，所述SL时域资源周期可以与“SL SSB周期”T SLSSB有关。例如，T SL＝k 1·T SLSSB，其中k 1是个整数，或者1/k 1是个整数。 ◇ Optionally, the SL time domain resource period may be related to the "SL SSB period" T SLSSB . For example, T SL =k 1 ·T SLSSB , where k 1 is an integer, or 1/k 1 is an integer.
◇可选地，所述SL时域资源周期可以与所述SL时隙位图的大小B SL有关。例如，T SL＝k 2·B SL，其中k 2是个整数。 ◇ Optionally, the SL time domain resource period may be related to the size B SL of the SL time slot bitmap. For example, T SL =k 2 ·B SL , where k 2 is an integer.
◇可选地，所述SL时域资源周期可以预定义为集合R7＝{0.25，0.5，0.625，1，1.25，2，2.5，3，4，5，6，7，8，9，10，12，14，15，16，18，20，22，24，25，26，28，30，32，34，35，36，38，40，42，44，45，46，48，50，52，54，55，56，58，60，62，64，65，70，75，80，85，90，100}中的任意一个值，或者配置或预配置为所述集合R7的任意一个子集中的一个值。◇ Optionally, the SL time domain resource period can be predefined as a set R7={0.25, 0.5, 0.625, 1, 1.25, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 22, 24, 25, 26, 28, 30, 32, 34, 35, 36, 38, 40, 42, 44, 45, 46, 48, 50, 52, 54, 55, 56, 58, 60, 62, 64, 65, 70, 75, 80, 85, 90, 100}, or configured or pre-configured as any subset of the set R7 A value.
Figure PCTCN2020118651-appb-000229
可选地，所述集合R7中，非整数的值只在所述SL时域资源周期的单位是毫秒或秒时适用。
Figure PCTCN2020118651-appb-000229
Optionally, in the set R7, the non-integer value is only applicable when the unit of the SL time domain resource period is milliseconds or seconds.
Figure PCTCN2020118651-appb-000230
可选地，所述SL时域资源周期的取值集合可以和所述SL载波所配置的子载波间隔和/或CP长度有关。例如，不同子载波间隔和/或CP长度对应不同的SL时域资源周期的取值或取值集合。
Figure PCTCN2020118651-appb-000230
Optionally, the value set of the SL time domain resource period may be related to the subcarrier interval and/or CP length configured by the SL carrier. For example, different subcarrier intervals and/or CP lengths correspond to different values or value sets of SL time domain resource periods.
○SL时域资源偏移(记为D SL)。其中， ○SL time domain resource offset (denoted as D SL ) among them,
◇可选地，所述SL时域资源偏移的单位可以是一个或多个符号。◇ Optionally, the unit of the SL time domain resource offset may be one or more symbols.
◇可选地，所述SL时域资源偏移的单位可以是一个或多个时隙。◇ Optionally, the unit of the SL time domain resource offset may be one or more time slots.
◇可选地，所述SL时域资源偏移的单位可以是一个或多个子帧。◇ Optionally, the unit of the SL time domain resource offset may be one or more subframes.
◇可选地，所述SL时域资源偏移的单位可以是一个或多个帧。◇ Optionally, the unit of the SL time domain resource offset may be one or more frames.
◇可选地，所述SL时域资源偏移的单位可以是一个或多个毫秒。◇ Optionally, the unit of the SL time domain resource offset may be one or more milliseconds.
◇可选地，所述SL时域资源偏移的单位可以是一个或多个秒。◇ Optionally, the unit of the SL time domain resource offset may be one or more seconds.
此外，在步骤S303，确定SL时域资源。In addition, in step S303, the SL time domain resource is determined.
例如，根据所述“SL时域资源指示信息”(例如所述SL时域资源配置信息列表的索引)确定所述SL时域资源配置信息列表中的一项。例如，若所述索引的值为0，则所确定的SL时域资源配置信息是所述SL时域资源配置信息列表的第一项。For example, an item in the SL time domain resource configuration information list is determined according to the "SL time domain resource indication information" (for example, the index of the SL time domain resource configuration information list). For example, if the value of the index is 0, the determined SL time domain resource configuration information is the first item of the SL time domain resource configuration information list.
又如，进一步地，根据所确定的SL时域资源配置信息，确定SL时域资源。例如，从满足SL条件的时隙n s开始，应用所述SL时隙位图。其中， For another example, further, the SL time domain resource is determined according to the determined SL time domain resource configuration information. For example, starting from the time slot n s that satisfies the SL condition, the SL time slot bitmap is applied. among them,
●可选地，所述SL条件可以是(n s-D)mod T＝0，或者(n s+D)mod T＝0。其中， ● Optionally, the SL condition can be (n s -D) mod T=0, or (n s +D) mod T=0. among them,
◆D可以是所述“SL时域资源偏移”D SL以时隙为单位表示的值。 ◆ D may be the value represented by the "SL time domain resource offset" D SL in units of time slots.
◆T可以是所述“SL时域资源周期”T SL以时隙为单位表示的值。 ◆ T may be the value represented by the "SL time domain resource period" T SL in units of time slots.
●可选地，所述“应用所述SL时隙位图”可以是将所述SL时隙位图中值为“1”的比特对应的时隙确定为SL时隙。其中，● Optionally, the "applying the SL time slot bitmap" may be determining the time slot corresponding to the bit with the value "1" in the SL time slot bitmap as the SL time slot. among them,
◆可选地，每一个所述SL时隙中，用于SL的OFDM符号的集合可以是{n starting，n starting+1，...，n ending}。 ◆ Optionally, in each of the SL time slots, the set of OFDM symbols used for the SL may be {n starting , n starting +1, ..., n ending }.
●可选地，所述“应用所述SL时隙位图”可以从所述SL时隙位图的最高有效位开始，也可以从所述SL时隙位图的最低有效位开始。● Optionally, the "application of the SL time slot bitmap" can start from the most significant bit of the SL time slot bitmap, or it can start from the least significant bit of the SL time slot bitmap.
可选地，在本发明的实施例三中，所述“用于SL”可以是用于SL传输，或者用于SL接收，或者用于SL上的AGC，或者用于SL上的GP，或者用于其他与SL有关的用途。Optionally, in the third embodiment of the present invention, the "used for SL" may be used for SL transmission, or for SL reception, or for AGC on SL, or for GP on SL, or For other purposes related to SL.
这样，本发明的实施例三通过在预配置或配置信息中指示SL时域资源配置信息列表，以及在SL SSB中指示所述SL时域资源配置信息列表的一个索引，既确保了SL时域资源配置的灵活性，又极大减少了SL SSB中的信令开销。In this way, in the third embodiment of the present invention, the SL time domain resource configuration information list is indicated in the pre-configuration or configuration information, and an index of the SL time domain resource configuration information list is indicated in the SL SSB, thus ensuring the SL time domain. The flexibility of resource configuration greatly reduces the signaling overhead in the SL SSB.
[变形例][Modifications]
下面，利用图6来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。Hereinafter, FIG. 6 is used to illustrate a user equipment that can execute the method executed by the user equipment described in detail above in the present invention as a modified example.
图6是表示本发明所涉及的用户设备UE的框图。Fig. 6 is a block diagram showing a user equipment UE related to the present invention.
如图6所示，该用户设备UE40包括处理器401和存储器402。处理器401例如可以包括微处理器、微控制器、嵌入式处理器等。存储器402例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器402上存储有程序指令。该指令在由处理器401运行时，可以执行本发明详细描述的由用户设备执行的上述方法。As shown in FIG. 6, the user equipment UE40 includes a processor 401 and a memory 402. The processor 401 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 402 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memories. The memory 402 stores program instructions. When the instruction is executed by the processor 401, it can execute the above-mentioned method executed by the user equipment described in detail in the present invention.
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的，而且以上说明的各实施例在不发生矛盾的情况下能够相互组合。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。本领域技术人员可以理解，当任意一个公式或数学表达式中的一个或多个数学符号为常数或者一个给定的表达式时，所述公式或数学表达式可以做一定的简化(例如，合并 常数项)或重写。例如，若T SLSSB＝160，
Figure PCTCN2020118651-appb-000231
则
Figure PCTCN2020118651-appb-000232
可以写为
Figure PCTCN2020118651-appb-000233
或者
Figure PCTCN2020118651-appb-000234
或者
Figure PCTCN2020118651-appb-000235
又如，若
Figure PCTCN2020118651-appb-000236
T SLSSB＝160，则
Figure PCTCN2020118651-appb-000237
Figure PCTCN2020118651-appb-000238
可以重写为
Figure PCTCN2020118651-appb-000239
The method and related equipment of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the method shown above is only exemplary, and the various embodiments described above can be combined with each other without contradiction. The method of the present invention is not limited to the steps and sequence shown above. The network nodes and user equipment shown above may include more modules, for example, may also include modules that can be developed or that can be developed in the future and can be used for base stations, MMEs, or UEs, and so on. The various identifiers shown above are only exemplary rather than restrictive, and the present invention is not limited to specific information elements as examples of these identifiers. Those skilled in the art can make many changes and modifications based on the teaching of the illustrated embodiment. Those skilled in the art can understand that when one or more mathematical symbols in any formula or mathematical expression is a constant or a given expression, the formula or mathematical expression can be simplified (for example, combined Constant term) or rewrite. For example, if T SLSSB = 160,
Figure PCTCN2020118651-appb-000231
then
Figure PCTCN2020118651-appb-000232
Can be written as
Figure PCTCN2020118651-appb-000233
or
Figure PCTCN2020118651-appb-000234
or
Figure PCTCN2020118651-appb-000235
Another example, if
Figure PCTCN2020118651-appb-000236
T SLSSB = 160, then
Figure PCTCN2020118651-appb-000237
Figure PCTCN2020118651-appb-000238
Can be rewritten as
Figure PCTCN2020118651-appb-000239
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。It should be understood that the foregoing embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware. For example, the various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Device, application specific integrated circuit (ASIC), field programmable gate array (FPGA), programmable logic device (CPLD), etc.
在本申请中，“基站”可以指具有一定发射功率和一定覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”可以指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。In this application, "base station" may refer to a mobile communication data and control switching center with a certain transmission power and a certain coverage area, including functions such as resource allocation and scheduling, data reception and transmission. "User equipment" may refer to a user's mobile terminal, for example, including mobile phones, notebooks, and other terminal devices that can communicate with base stations or micro base stations wirelessly.
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。In addition, the embodiments of the present invention disclosed herein can be implemented on a computer program product. More specifically, the computer program product is a product that has a computer-readable medium with computer program logic encoded on the computer-readable medium, and when executed on a computing device, the computer program logic provides related operations to implement The above technical solution of the present invention. When executed on at least one processor of the computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. This arrangement of the present invention is typically provided as software, code and/or other data structures arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk or hard disk, or as software, code and/or other data structures such as one or more Firmware or microcode on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or such a configuration may be installed on a computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
此外，上述每个实施例中所使用的基站设备和终端设备的每个功能模 块或各个特征可以由电路实现或执行，所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器，或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置，或者可以由逻辑电路配置。此外，当由于半导体技术的进步，出现了能够替代目前的集成电路的先进技术时，本发明也可以使用利用该先进技术得到的集成电路。In addition, each functional module or each feature of the base station equipment and terminal equipment used in each of the foregoing embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits. Circuits designed to perform the functions described in this specification can include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC) or general-purpose integrated circuits, field programmable gate arrays (FPGA), or other Programming logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The above-mentioned general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when advanced technologies that can replace current integrated circuits appear due to advances in semiconductor technology, the present invention can also use integrated circuits obtained by using this advanced technology.
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。Although the present invention has been described above in conjunction with the preferred embodiments of the present invention, those skilled in the art will understand that various modifications, substitutions and changes can be made to the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention should not be limited by the above-mentioned embodiments, but should be defined by the appended claims and their equivalents.

Claims (10)

  1. 一种由用户设备UE执行的方法，其特征在于包括：A method executed by user equipment UE, which is characterized in that it includes:
    从作为同步源的另一UE获取同步源优先级指示信息；以及Obtain synchronization source priority indication information from another UE that is the synchronization source; and
    根据获取的所述同步源优先级指示信息，确定所述同步源的优先级。Determine the priority of the synchronization source according to the acquired priority indication information of the synchronization source.
  2. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，直接同步到基站的UE，间接同步到基站的UE，其他UE}中的一个值。If it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {direct synchronization to GNSS UE, indirect synchronization to GNSS UE, directly synchronized to the base station UE, indirectly synchronized to the base station UE, a value in other UE}.
  3. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{同步到GNSS的UE，同步到基站的UE，其他UE}中的一个值。If it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {UE synchronized to GNSS, synchronized to the base station UE, a value in other UE}.
  4. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。If it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to use a synchronization source based on a base station, the synchronization source priority indication information indicates the set {direct synchronized UE, indirect synchronized UE, A value in other UE}.
  5. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于全球导航卫星系统GNSS的同步，且配置或预配置为不使用基于基站的同步源，则所述同步源优先级指示信息指示集合{直接同步到GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。If it is configured or pre-configured to synchronize based on the Global Navigation Satellite System GNSS, and configured or pre-configured to not use a base station-based synchronization source, the synchronization source priority indication information indicates the set {direct synchronization to GNSS UE, indirect synchronization A value in GNSS UE, other UE}.
  6. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指示集合{直接同步到基站的UE，间接同步到基站的UE，直接同步到全球导航卫星系统GNSS的UE，间接同步到GNSS的UE，其他UE}中的一个值。If the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indication set {UE directly synchronized to the base station, indirectly synchronized to the base station UE, directly synchronized to the global navigation satellite system GNSS UE, indirect synchronization A value in GNSS UE, other UE}.
  7. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指 示集合{同步到基站的UE，同步到全球导航卫星系统GNSS的UE，其他UE}中的一个值。If the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indicates a value in the set {UE synchronized to the base station, UE synchronized to the global navigation satellite system GNSS, other UE}.
  8. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    若配置或预配置为基于基站的同步，则所述同步源优先级指示信息指示集合{直接同步的UE，间接同步的UE，其他UE}中的一个值。If the configuration or pre-configuration is based on base station synchronization, the synchronization source priority indication information indicates a value in the set {directly synchronized UE, indirectly synchronized UE, other UE}.
  9. 根据权利要求1所述的方法，其特征在于，The method of claim 1, wherein:
    所述同步源优先级指示信息由物理直行广播信道PSBCH的有效载荷和/或直行同步信号标识SL SSID指示。The synchronization source priority indication information is indicated by the payload of the physical direct broadcast channel PSBCH and/or the direct synchronization signal identifier SL SSID.
  10. 一种用户设备，其特征在于，包括：A user equipment, characterized in that it comprises:
    处理器；以及Processor; and
    存储器，存储有指令，其中，所述指令在由所述处理器运行时执行所述权利要求1～9中任一项所述的方法。The memory stores instructions, where the instructions execute the method according to any one of claims 1-9 when run by the processor.
PCT/CN2020/118651 2019-09-30 2020-09-29 Method executed by user equipment, and user equipment WO2021063337A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910947212.3 2019-09-30
CN201910947212.3A CN112584485A (en) 2019-09-30 2019-09-30 Method performed by user equipment and user equipment

Publications (1)

Publication Number Publication Date
WO2021063337A1 true WO2021063337A1 (en) 2021-04-08

Family

ID=75117085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/118651 WO2021063337A1 (en) 2019-09-30 2020-09-29 Method executed by user equipment, and user equipment

Country Status (2)

Country Link
CN (1) CN112584485A (en)
WO (1) WO2021063337A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017026518A1 (en) * 2015-08-13 2017-02-16 株式会社Ｎｔｔドコモ User device and signal synchronization method
WO2017171487A2 (en) * 2016-04-01 2017-10-05 Innovative Technology Lab Co., Ltd. Method and apparatus for synchronization for vehicle-to-x communication
CN110248404A (en) * 2018-03-09 2019-09-17 维沃移动通信有限公司 The method, apparatus and terminal device of synchronizing information

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017026518A1 (en) * 2015-08-13 2017-02-16 株式会社Ｎｔｔドコモ User device and signal synchronization method
WO2017171487A2 (en) * 2016-04-01 2017-10-05 Innovative Technology Lab Co., Ltd. Method and apparatus for synchronization for vehicle-to-x communication
CN110248404A (en) * 2018-03-09 2019-09-17 维沃移动通信有限公司 The method, apparatus and terminal device of synchronizing information

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CATT: "3GPP TSG RAN WG1 Meeting #98 R1-1909828", FEATURE LEAD SUMMARY ON AI 7.2.4.3 SIDELINK SYNCHRONIZATION MECHANISM, 30 August 2019 (2019-08-30) *
ERICSSON: "On Synchronization for NR Sidelink", 3GPP DRAFT; R1-1811593 ERICSSON - ON SYNCHRONIZATION FOR NR SL V2X, vol. RAN WG1, 28 September 2018 (2018-09-28), Chengdu, China, pages 1 - 6, XP051518991 *
SHARP: "Synchronization mechanism for NR sidelink", 3GPP DRAFT; R1-1909097, vol. RAN WG1, 30 August 2019 (2019-08-30), Prague, Czech Republic, pages 1 - 5, XP051765700 *

Also Published As

Publication number Publication date
CN112584485A (en) 2021-03-30

Similar Documents

Publication Publication Date Title
US20220247539A1 (en) Method performed by user equipment, and user equipment
WO2020221241A1 (en) Method executed by user equipment and user equipment
WO2020125679A1 (en) Method executed by user equipment, and user equipment
WO2021197204A1 (en) Method executed by user equipment, and user equipment
WO2021139750A1 (en) Method executed by user equipment, and user equipment
US20220191938A1 (en) Method performed by user equipment, and user equipment
WO2022068685A1 (en) Method executed by user equipment, and user equipment
WO2021160033A1 (en) Method executed by user equipment, and user equipment
EP4135420A1 (en) Method executed by user equipment and user equipment
WO2020259568A1 (en) Method executed by user equipment and user equipment
WO2020192695A1 (en) Method executable by user equipment
WO2021228136A1 (en) Method executed by user equipment, and user equipment
WO2021160032A1 (en) Method executed by user equipment and user equipment
WO2022028328A1 (en) Method executed by user equipment and user equipment
WO2022028274A1 (en) Method executed by user equipment, and user equipment
WO2021063337A1 (en) Method executed by user equipment, and user equipment
US20220417959A1 (en) Method performed by user equipment, and user equipment
WO2021197210A1 (en) Method executed by user equipment, and user equipment
WO2021238757A1 (en) Method executed by user equipment, and user equipment
WO2021088486A1 (en) Method executed by user equipment and user equipment
WO2022022377A1 (en) Method executed by user equipment, and user equipment
WO2021027833A1 (en) User equipment-executed method, and user equipment
US20230379121A1 (en) Method performed by user equipment, and user equipment
WO2021057838A1 (en) Method executed by user equipment, and user equipment

Legal Events

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

Ref document number: 20871696

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20871696

Country of ref document: EP

Kind code of ref document: A1