WO2021226963A1 - Procédé et appareil de détermination de ssb, et dispositif de communication - Google Patents

Procédé et appareil de détermination de ssb, et dispositif de communication Download PDF

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Publication number
WO2021226963A1
WO2021226963A1 PCT/CN2020/090359 CN2020090359W WO2021226963A1 WO 2021226963 A1 WO2021226963 A1 WO 2021226963A1 CN 2020090359 W CN2020090359 W CN 2020090359W WO 2021226963 A1 WO2021226963 A1 WO 2021226963A1
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Prior art keywords
ssb
ssbs
duration
transmission opportunity
time domain
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PCT/CN2020/090359
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English (en)
Chinese (zh)
Inventor
吴作敏
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/090359 priority Critical patent/WO2021226963A1/fr
Priority to CN202080100466.2A priority patent/CN115486148A/zh
Publication of WO2021226963A1 publication Critical patent/WO2021226963A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the embodiments of the present application relate to the field of mobile communication technologies, and in particular to a method and device for determining an SSB, and communication equipment.
  • NR New Radio
  • FR1 Frequency Range 1
  • FR2 Frequency Range 2
  • synchronization signal block Synchronization Signal/PBCH Block, SSB or SS/PBCH block
  • SSB Synchronization Signal/PBCH Block
  • the embodiments of the present application provide a method and device for determining an SSB, and communication equipment.
  • the first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes the primary synchronization signal ( Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Physical Broadcast Channel (PBCH), the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device , N is a positive integer.
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the SSB determining apparatus provided in the embodiment of the present application is applied to a first device, and the apparatus includes:
  • the determining unit is configured to determine a first SSB transmission opportunity corresponding to a first subcarrier interval, where the first subcarrier interval is greater than 240kHz, and the first SSB transmission opportunity includes N SSBs, where one SSB includes PSS, SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.
  • the communication device provided by the embodiment of the present application includes a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the above-mentioned method for determining the SSB.
  • the chip provided in the embodiment of the present application is used to implement the above-mentioned method for determining the SSB.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned method for determining the SSB.
  • the computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables the computer to execute the above-mentioned method for determining the SSB.
  • the computer program product provided by the embodiment of the present application includes computer program instructions that cause the computer to execute the above-mentioned method for determining SSB.
  • the computer program provided in the embodiment of the present application when it runs on a computer, causes the computer to execute the above-mentioned method for determining the SSB.
  • the first SSB transmission opportunity corresponding to the first sub-carrier interval is clarified, so that high-frequency transmission can be supported.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the SSB pattern of FR1 provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an SSB pattern of FR2 provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a method for determining an SSB provided by an embodiment of the present application
  • FIG. 5 is a first schematic diagram of a high-frequency SSB pattern provided by an embodiment of the present application.
  • FIG. 6 is a second schematic diagram of a high-frequency SSB pattern provided by an embodiment of the present application.
  • Figure 7-1 is a first schematic diagram of SSB patterns corresponding to different subcarrier intervals provided by an embodiment of the present application
  • FIG. 7-2 is a second schematic diagram of SSB patterns corresponding to different subcarrier intervals provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the structural composition of an SSB determining apparatus provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • LTE-A advanced long term evolution
  • NR new radio
  • evolution system of NR system LTE on unlicensed frequency bands (LTE-based access to unlicensed spectrum, LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunication system (UMTS), global Connected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, wireless local area networks (WLAN), wireless fidelity (WiFi), next-generation communication systems or other communication systems, etc.
  • WiMAX wireless local area networks
  • WiFi wireless fidelity
  • next-generation communication systems or other communication systems etc.
  • D2D device to device
  • M2M machine to machine
  • MTC machine type communication
  • V2V vehicle to vehicle
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located in the coverage area.
  • the network device 110 may be an evolved base station (Evolutional Node B, eNB, or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future communication system, etc.
  • the network device may have mobile characteristics, for example, the network device may be a mobile device.
  • the network equipment can be a satellite or a balloon station.
  • the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite, or a High Elliptical Orbit (HEO) satellite.
  • LEO Low Earth Orbit
  • MEO Medium Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO High Elliptical Orbit
  • the network device may also be a base station installed in a location such as land or water.
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal” used here includes, but is not limited to, connection via a wired line, such as via a public switched telephone network (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another terminal's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone network
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber
  • a terminal set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal can refer to access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user Device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks, or terminals in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the terminal device can be deployed on land, including indoor or outdoor, hand-held, worn or car-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).
  • the terminal devices 120 may perform direct terminal connection (Device to Device, D2D) communication.
  • D2D Direct terminal connection
  • the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminals. This embodiment of the present application There is no restriction on this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 having a communication function and a terminal device 120.
  • the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiment of the present application.
  • FR1 and FR2 include the frequency domain range as shown in Table 1 below.
  • Frequency band definition Corresponding frequency range FR1 410MHz–7.125GHz FR2 24.25GHz–52.6GHz
  • FRX is used in the embodiment of the present application. It should be understood that the name of the frequency band should not constitute any limitation.
  • FR3 can be used to represent the frequency range of 52.6GHz-71GHz.
  • the FRX frequency band includes licensed spectrum as well as unlicensed spectrum.
  • the FRX frequency band includes non-shared spectrum as well as shared spectrum.
  • Unlicensed spectrum is a spectrum that can be used for radio equipment communications divided by countries and regions. This spectrum is usually considered to be a shared spectrum, that is, communication devices in different communication systems as long as they meet the regulatory requirements set by the country or region on the spectrum. To use this spectrum, there is no need to apply for a proprietary spectrum authorization from the government.
  • LBT Listen Before Talk
  • the communication equipment needs to perform channel detection before sending signals on channels of unlicensed spectrum, only when the channel detection result is channel When it is idle, the communication device can send signals; if the channel detection result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot send signals.
  • LBT Listen Before Talk
  • the duration of signal transmission by a communication device using an unlicensed spectrum channel cannot exceed a certain length of time.
  • the communication device needs to follow the maximum power spectrum when using the channel of the unlicensed spectrum for signal transmission. Density limit.
  • the subcarrier spacing considered in the FRX frequency band is larger than that of FR2.
  • the current candidate subcarrier spacing includes the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
  • the corresponding parameter sets (Numerology) under these candidate subcarrier intervals are shown in Table 3 below.
  • Subcarrier spacing Symbol length Normal CP length Extend CP length Slot length 480kHz 2.08 microseconds 0.146 microseconds 0.52 microseconds 31.25 microseconds 960kHz 1.04 microseconds 0.073 microseconds 0.26 microseconds 15.625 microseconds 1.92MHz 0.52 microseconds 0.037 microseconds 0.13 microseconds 7.8125 microseconds 3.84MHz 0.26 microseconds 0.018 microseconds 0.065 microseconds 3.90625 microseconds
  • Table 3 Parameter set corresponding to candidate sub-carrier spacing
  • the SSB pattern supported by FR1 includes 3 cases (Case A, B, C), and the SSB pattern supported by FR2 includes 2 cases (Case D, E).
  • one SSB transmission opportunity may include one or more SSBs, one SSB includes 4 symbols in the time domain, and one SSB transmission opportunity should complete the transmission within one half frame (5 milliseconds). Assuming that the index of the first symbol of the first slot in a half frame is symbol 0:
  • the index of the first symbol of SSB includes ⁇ 2,8 ⁇ +14*n;
  • n 0,1;
  • n 0,1,2,3;
  • n 0,1,2,3,4.
  • the index of the first symbol of SSB includes ⁇ 4,8,16,20 ⁇ +28*n;
  • n 0;
  • n 0,1.
  • the index of the first symbol of SSB includes ⁇ 2,8 ⁇ +14*n;
  • n 0,1;
  • n 0,1,2,3;
  • n 0,1;
  • n 0,1,2,3;
  • n 0,1,2,3,4,5,6,7,8,9.
  • the index of the first symbol of SSB includes ⁇ 4,8,16,20 ⁇ +28*n;
  • n 0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18;
  • the index of the first symbol of SSB includes ⁇ 8,12,16,20,32,36,40,44 ⁇ +56*n;
  • n 0,1,2,3,5,6,7,8.
  • Figures 2 and 3 respectively show schematic diagrams of part of the SSB patterns in the above-mentioned different situations.
  • Figure 2 respectively shows a part of the SSB pattern of Case A-15kHz subcarrier spacing, a part of the SSB pattern of Case B-30kHz subcarrier spacing, and a part of the SSB pattern of Case C-30kHz subcarrier spacing.
  • Figure 3 shows part of the SSB pattern of Case D-120kHz subcarrier spacing, and part of the SSB pattern of Case E-240kHz subcarrier spacing.
  • the initial access process of the terminal device can be completed by detecting the SSB in the Discovery Burst window.
  • the discovery signal transmission opportunity window appears periodically, and the discovery signal transmission opportunity window may include multiple candidate locations for SSB transmission.
  • the network device sends the SSB within the discovery signal transmission opportunity window, it can make multiple LBT attempts, and can perform SSB transmission through at least one of the multiple candidate locations after the LBT is successful.
  • the base station may select a candidate location that obtains the channel use right from the SSB candidate locations in the discovery signal transmission opportunity window according to the LBT result for SSB transmission.
  • FIG. 4 is a schematic flowchart of a method for determining SSB provided by an embodiment of the present application. As shown in FIG. 4, the method for determining SSB includes the following steps:
  • Step 401 The first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes the PSS , SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.
  • the first subcarrier interval is greater than 240 kHz.
  • the first subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
  • the value of the first sub-carrier interval may be 480 kHz, or 960 kHz, or 1.92 MHz, or 3.84 MHz.
  • the first device communicates on the FRX frequency band, where the FRX frequency band is higher than FR2 and belongs to the high frequency frequency band.
  • the sub-carrier spacing of the FRX frequency band is larger than that of FR2.
  • the subcarrier spacing of the FRX frequency band includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
  • the first subcarrier interval belongs to a subcarrier interval of the FRX frequency band.
  • the first device determines the first SSB transmission opportunity corresponding to the first subcarrier interval, where the first SSB transmission opportunity includes N SSBs, and N is a positive integer.
  • N is a positive integer greater than or equal to 64.
  • each of the N SSBs is associated with a beam (Beam), so as to support beamforming (Beamforming) transmission at high frequencies.
  • one SSB in the first SSB transmission opportunity includes PSS, SSS, and PBCH, and the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device.
  • the first device is a terminal device, and the terminal device receives the SSB based on the first SSB transmission opportunity.
  • the terminal device blindly detects the SSB, and completes downlink synchronization, such as frame timing, for the cell that sends the first SSB transmission opportunity based on the detected SSB and the SSB pattern corresponding to the first SSB transmission opportunity, thereby completing the cell Initial access.
  • the cell corresponding to the terminal device may refer to that the cell is the cell to which the terminal device performs initial access.
  • the first device is a network device, and the network device sends an SSB based on the first SSB transmission opportunity.
  • the network device (such as a base station) determines the candidate location of the SSB based on the SSB pattern corresponding to the first SSB transmission opportunity, and sends the SSB at one or more candidate locations.
  • the network device needs to perform LBT before sending the SSB, and send the SSB at one or more candidate locations after the LBT is successful.
  • the cell corresponding to the network device may refer to the cell in which the network device transmits at least one SSB according to the first SSB transmission opportunity (or according to a pattern corresponding to the first SSB transmission opportunity).
  • the SSB index of the first SSB in the N SSBs is indicated by X bits, and X is a positive integer, wherein some or all of the X bits are carried by the PBCH in the first SSB; or, Some or all of the X bits are carried by reference signals in the first SSB, and the reference signals include PSS, SSS, and demodulation reference signals (Demodulation Reference Signal, DMRS) in the first SSB At least one of, wherein the DMRS is used to demodulate the PBCH in the first SSB.
  • DMRS Demodulation Reference Signal
  • the N is equal to 64
  • the X is equal to 6, that is, 6 bits are required to indicate the SSB index.
  • 3 bits of the 6 bits are carried by the PBCH in the first SSB, and the other 3 bits of the 6 bits are carried by the reference signal (such as DMRS) in the first SSB.
  • the N is a positive integer greater than 64
  • the X is a positive integer greater than 6.
  • the X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB, and the second partial bit is carried by a reference signal (such as PSS, At least one of SSS and DMRS) carried.
  • the first partial bits include 3 bits
  • the second partial bits include X-3 bits; or, the first partial bits include X-3 bits, and the second partial bits include 3 bits.
  • the N is 128, and the X is equal to 7, that is, 7 bits are required to indicate the SSB index.
  • 3 bits of the 7 bits are carried by the PBCH in the first SSB, and the other 4 bits of the 7 bits are carried by the reference signal in the first SSB.
  • 4 bits of the 7 bits are carried by the PBCH in the first SSB, and the other 3 bits of the 7 bits are carried by the reference signal in the first SSB.
  • the N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.
  • the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration.
  • the first duration will be described below.
  • the first time length is less than or equal to the length of the time domain resources allowed for transmission in the first channel access mode (ie LBT mode), so that the network device performs channel access in the first channel access mode.
  • a group of SSB can be transmitted after the entry is successful (that is, the LBT is successful).
  • the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.
  • the first time length that the network device can transmit after successful channel access is less than or equal to 1 millisecond.
  • the first time length that the network device can transmit after successful channel access is less than or equal to 584 microseconds.
  • the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.
  • the first duration is 1 millisecond, and if the first subcarrier interval is 480 kHz, the transmission duration of a group of SSBs is less than or equal to 32 time slots. As another example, the first duration is 584 microseconds, and if the first subcarrier interval is 480 kHz, then the transmission duration of a group of SSBs is less than or equal to 18 time slots. As another example, the first duration is 250 microseconds, and if the first subcarrier interval is 480 kHz, the transmission duration of a group of SSBs is less than or equal to 8 time slots.
  • Any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.
  • the time-domain interval between two adjacent sets of SSBs in the M set of SSBs is greater than or equal to the second duration.
  • the second duration will be described below.
  • the second duration is greater than or equal to the duration of the transceiving conversion time.
  • the length of the transmission and reception conversion time refers to the length of time required to change from the state of receiving signals to the state of transmitting; or, the length of time required to change from the state of transmitting to the state of receiving; or, from the first state of transmitting The length of time required to change the state to the second signaled state; or, the length of time required to change from the first state of receiving signals to the second state of receiving signals.
  • the transmission and reception conversion time length is less than or equal to 5 microseconds.
  • the first device (such as a terminal device) can transmit high-priority services (such as URLLC services) through the resources in the second duration, or the network device can Complete the corresponding LBT for transmitting the next set of SSB.
  • high-priority services such as URLLC services
  • the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.
  • the specific priority is, for example, high priority. It should be noted that high priority refers to a priority greater than or equal to the priority threshold.
  • the physical channel includes, for example, a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), and a Physical Uplink Shared Channel (PUSCH).
  • the physical signal includes (Sounding Reference Signal, SRS), for example.
  • the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.
  • the interval between at least two adjacent SSBs included in the group of SSBs in the time domain is greater than or equal to the third duration.
  • the third duration will be described below.
  • the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.
  • the third duration may be used to transmit system messages or to transmit high-priority services or to switch the direction of the beam for transmitting the SSB.
  • the number of symbols included in the one SSB is greater than or equal to 4.
  • SSBs are included in two time slots.
  • two SSBs are included in one time slot.
  • one SSB is included in one time slot.
  • the number of symbols included in the SSB can be increased, so that the transmission power of the SSB can be increased, and the transmission reliability of the SSB can be increased.
  • the length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth time length.
  • the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.
  • the fourth duration is 5 milliseconds or 2.5 milliseconds.
  • the first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first time slot included in the fourth duration.
  • the index of the first symbol of the first slot in the fourth duration is symbol 0, and then the first symbol of the first SSB in the first SSB transmission opportunity is symbol 0.
  • SSB transmission can start from the first symbol of the first time slot.
  • the first device determines the second SSB transmission opportunity corresponding to the second subcarrier interval in addition to determining the first SSB transmission opportunity corresponding to the first subcarrier interval.
  • the second sub-carrier spacing is greater than 240 kHz.
  • the second subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
  • the second sub-carrier interval is 120 kHz or 240 kHz.
  • the second subcarrier interval is an integer multiple of the first subcarrier interval.
  • the first subcarrier interval is 480kHz
  • the second subcarrier interval is 960kHz.
  • the first subcarrier interval is an integer multiple of the second subcarrier interval.
  • the first subcarrier spacing is 960kHz
  • the second subcarrier spacing is 480kHz.
  • the first subcarrier interval is 480kHz
  • the second subcarrier interval is 240kHz.
  • the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following features:
  • the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;
  • the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;
  • the SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity
  • the number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.
  • the first duration is 584 microseconds, that is, the transmission duration of a group of SSB is less than or equal to 18 time slots. It takes 1125 microseconds to transmit an SSB transmission opportunity.
  • the number of symbols included in one SSB is 6, and there are 4 SSBs in two time slots.
  • symbols 0 to 5 in time slot 0 correspond to the time domain resources of the first SSB
  • symbols 6 to 11 in time slot 0 correspond to the time domain resources of the second SSB
  • Symbols 12 to 13 in slot 0 and symbols 0 to 3 in slot 1 correspond to the time domain resources of the third SSB
  • symbols 4 to 9 in slot 1 correspond to the time domain of the fourth SSB resource.
  • the transmission duration of a group of SSBs is less than or equal to 10 time slots. It takes 80 time slots to transmit one SSB transmission opportunity.
  • the number of symbols included in one SSB is 6, and one SSB is included in one time slot.
  • symbols 0 to 5 in time slot 0 correspond to one SSB time domain resource.
  • the second sub-carrier interval is 960 kHz
  • the SSB pattern corresponding to the first sub-carrier interval is the same as FIG. 5.
  • one SSB includes 6 symbols, and two time slots include 4 SSBs.
  • the number of SSBs included in the SSB pattern of the second subcarrier interval is the same as the number of SSBs included in the SSB pattern of the first subcarrier interval.
  • the time domain resources occupied by the SSB pattern of the first subcarrier interval include the time domain resources occupied by the SSB pattern of the second subcarrier interval, and the time domain resources occupied by the SSB pattern of the second subcarrier interval are the SSB of the first subcarrier interval Part of the time domain resources occupied by the pattern.
  • one SSB includes 6 symbols, and two time slots include 4 SSBs.
  • the number of SSBs included in the SSB pattern of the second subcarrier interval is the same as the number of SSBs included in the SSB pattern of the first subcarrier interval.
  • the SSB pattern of the second subcarrier interval is obtained by reducing the SSB pattern of the first subcarrier interval by 0.5 times in the time domain.
  • FIG. 8 is a schematic structural composition diagram of an SSB determining apparatus provided by an embodiment of the present application, which is applied to a first device.
  • the SSB determining apparatus includes:
  • the determining unit 801 is configured to determine a first SSB transmission opportunity corresponding to a first subcarrier interval, where the first subcarrier interval is greater than 240kHz, the first SSB transmission opportunity includes N SSBs, and one SSB includes PSS , SSS and PBCH, the first SSB transmission opportunity is used for the initial cell access of the cell corresponding to the first device, and N is a positive integer.
  • the SSB index of the first SSB among the N SSBs is indicated by X bits, where X is a positive integer, and some or all of the X bits pass through the first SSB. Carried by the PBCH; or,
  • Part or all of the X bits are carried by a reference signal in the first SSB, and the reference signal includes at least one of PSS, SSS, and DMRS in the first SSB, wherein the The DMRS is used to demodulate the PBCH in the first SSB.
  • the X is a positive integer greater than 6, and the X bits include a first partial bit and a second partial bit; the first partial bit is carried by the PBCH in the first SSB, and the first partial bit is carried by the PBCH in the first SSB.
  • the two partial bits are carried by the reference signal in the first SSB.
  • the first partial bit includes 3 bits, and the second partial bit includes X-3 bits; or,
  • the first part of bits includes X-3 bits, and the second part of bits includes 3 bits.
  • the N SSBs include M groups of SSBs, and M is a positive integer greater than or equal to 2.
  • the length of the time domain resource occupied by each group of SSBs in the M group of SSBs in the time domain is less than or equal to the first duration.
  • the first duration is less than or equal to the length of the time domain resource allowed for transmission in the first channel access manner.
  • the first duration is less than or equal to 1 millisecond; or, the first duration is less than or equal to 584 microseconds.
  • the first duration includes an integer number of symbols; or, the first duration includes an integer number of time slots.
  • any two groups of SSBs in the M group of SSBs have the same SSB pattern in the time domain.
  • the interval in the time domain between two adjacent sets of SSBs in the M set of SSBs is greater than or equal to the second duration.
  • the second time length is greater than or equal to the transmission and reception conversion time length.
  • the second duration is used to transmit a physical channel and/or a physical signal of a specific priority.
  • the second duration includes an integer number of symbols; or, the second duration includes an integer number of time slots.
  • an interval in the time domain between at least two adjacent SSBs included in the group of SSBs is greater than or equal to a third duration.
  • the third duration includes an integer number of symbols; or, the third duration includes an integer number of time slots.
  • the number of symbols included in the one SSB is greater than or equal to 4.
  • the four SSBs are included in two time slots; or,
  • One time slot includes two of the SSBs; or,
  • One time slot includes one SSB.
  • the length of the time domain resource occupied by the first SSB transmission opportunity in the time domain is less than or equal to the fourth duration.
  • the fourth duration includes an integer number of symbols; or, the fourth duration includes an integer number of time slots.
  • the first symbol of the first SSB in the first SSB transmission opportunity is the first symbol of the first time slot included in the fourth duration.
  • the determining unit 801 is further configured to determine the second SSB transmission opportunity corresponding to the second subcarrier interval, where:
  • the second subcarrier interval is an integer multiple of the first subcarrier interval; or,
  • the first subcarrier interval is an integer multiple of the second subcarrier interval.
  • the SSB pattern corresponding to the first SSB transmission opportunity and the second SSB transmission opportunity includes at least one of the following features:
  • the time domain resources occupied by the first SSB transmission opportunity in the time domain include the time domain resources occupied by the second SSB transmission opportunity in the time domain Time domain resources;
  • the time domain resources occupied by the second SSB transmission opportunity in the time domain include the time domain resources occupied by the first SSB transmission opportunity in the time domain Time domain resources;
  • the SSB pattern corresponding to the second SSB transmission opportunity is a scaling pattern of the SSB pattern corresponding to the first SSB transmission opportunity
  • the number of SSBs included in the second SSB transmission opportunity is the same as the number of SSBs included in the first SSB transmission opportunity.
  • the first subcarrier interval includes at least one of the following: 480kHz, 960kHz, 1.92MHz, 3.84MHz.
  • the first device is a terminal device
  • the apparatus further includes:
  • the communication unit 802 is configured to receive an SSB based on the first SSB transmission opportunity.
  • the first device is a network device
  • the device also includes:
  • the communication unit 802 is configured to send an SSB based on the first SSB transmission opportunity.
  • FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application.
  • the communication device may be a terminal device or a network device.
  • the communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 900 may further include a memory 920.
  • the processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.
  • the memory 920 may be a separate device independent of the processor 910, or may be integrated in the processor 910.
  • the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 930 may include a transmitter and a receiver.
  • the transceiver 930 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 900 may specifically be a network device of an embodiment of the application, and the communication device 900 may implement the corresponding process implemented by the network device in each method of the embodiment of the application. For the sake of brevity, details are not repeated here. .
  • the communication device 900 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 900 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • FIG. 10 is a schematic structural diagram of a chip of an embodiment of the present application.
  • the chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 1000 may further include a memory 1020.
  • the processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.
  • the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.
  • the chip 1000 may further include an input interface 1030.
  • the processor 1010 can control the input interface 1030 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1000 may further include an output interface 1040.
  • the processor 1010 can control the output interface 1040 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip can implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application.
  • the chip mentioned in the embodiment of the present application may also be referred to as a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • FIG. 11 is a schematic block diagram of a communication system 1100 according to an embodiment of the present application. As shown in FIG. 11, the communication system 1100 includes a terminal device 1110 and a network device 1120.
  • the terminal device 1110 can be used to implement the corresponding function implemented by the terminal device in the above method
  • the network device 1120 can be used to implement the corresponding function implemented by the network device in the above method. For brevity, it will not be repeated here. .
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments may be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
  • the embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application , For the sake of brevity, I won’t repeat it here.
  • the embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the computer program product can be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For the sake of brevity, I will not repeat them here.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, it causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • I won’t repeat it here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application.
  • the computer program runs on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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

Abstract

Des modes de réalisation selon la présente invention concernent un procédé et un appareil de détermination de SSB, et un dispositif de communication. Le procédé consiste : en ce qu'un premier dispositif détermine une première occasion de transmission de SSB à premier espacement de sous-porteuse, le premier espacement de sous-porteuse étant supérieur à 240 kHz, et la première occasion de transmission de SSB comprenant N SSB, un SSB comprenant un signal de synchronisation primaire (PSS), un signal de synchronisation secondaire (SSS) et un canal de diffusion physique (PBCH), la première occasion de transmission de SSB servant à assurer un accès de cellule initiale correspondant au premier dispositif, et N étant un entier positif.
PCT/CN2020/090359 2020-05-14 2020-05-14 Procédé et appareil de détermination de ssb, et dispositif de communication WO2021226963A1 (fr)

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CN202080100466.2A CN115486148A (zh) 2020-05-14 2020-05-14 一种ssb的确定方法及装置、通信设备

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