WO2020103160A1 - Procédé de communication sans fil, dispositif de réseau et dispositif terminal - Google Patents

Procédé de communication sans fil, dispositif de réseau et dispositif terminal

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Publication number
WO2020103160A1
WO2020103160A1 PCT/CN2018/117307 CN2018117307W WO2020103160A1 WO 2020103160 A1 WO2020103160 A1 WO 2020103160A1 CN 2018117307 W CN2018117307 W CN 2018117307W WO 2020103160 A1 WO2020103160 A1 WO 2020103160A1
Authority
WO
WIPO (PCT)
Prior art keywords
candidate
positions
starting
transmission
synchronization signal
Prior art date
Application number
PCT/CN2018/117307
Other languages
English (en)
Chinese (zh)
Inventor
贺传峰
Original Assignee
Oppo广东移动通信有限公司
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 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 CN201880093784.3A priority Critical patent/CN112189366B/zh
Priority to PCT/CN2018/117307 priority patent/WO2020103160A1/fr
Publication of WO2020103160A1 publication Critical patent/WO2020103160A1/fr

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

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a wireless communication method, network equipment, and terminal equipment.
  • the synchronization signal blocks (such as synchronization signals and broadcast channels) in the New Radio (NR) system can cover the entire cell through multi-beam scanning to facilitate the reception of terminal devices in the cell.
  • the transmission time may be predetermined for transmitting the synchronization signal block using each beam.
  • the Listen Before Talk (LBT) operation can be performed, and when the channel is determined to be idle through the LBT, the synchronization signal block can be transmitted.
  • LBT Listen Before Talk
  • the current transmission time of the synchronization signal block defined in the NR may not be successfully transmitted.
  • Embodiments of the present application provide a wireless communication method and device, which can increase the transmission time of a synchronization signal block, thereby improving the probability of successfully transmitting a synchronization signal block within a transmission window.
  • a wireless communication method including: a network device sends first information, the first information indicating transmission information of M synchronization signal blocks, and the transmission information indicating whether the synchronization signal block is transmitted; The network device sends second information indicating the first starting position, where the first starting position is the corresponding starting position of the M synchronization signal blocks in the transmission window, where the transmission window N candidate transmission positions are included, and the M synchronization signal blocks correspond to M candidate transmission positions, where M is less than N.
  • a wireless communication method which includes: a network device performing transmission of at least a part of synchronization signal blocks among M synchronization signal blocks in at least a part of the M candidate transmission positions in a transmission window.
  • the starting positions of the M candidate sending positions are the first candidate starting positions; wherein, the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions It is a candidate transmission position among the N candidate transmission positions that can be used as the starting position of the M candidate transmission positions corresponding to the M synchronization signal blocks, and the first candidate starting position belongs to the P candidate starts Position, the M is less than the N, and the P is greater than 1 or less than or equal to N.
  • a wireless communication method including: a terminal device receiving first information, the first information indicating transmission information of M synchronization signal blocks, and the transmission information indicating whether the synchronization signal block is transmitted; The terminal device receives second information that indicates a first starting position, where the first starting position is a corresponding starting position of the M synchronization signal blocks in a transmission window, where the transmission window N candidate transmission positions are included, and the M synchronization signal blocks correspond to M candidate transmission positions, where M is less than N.
  • a wireless communication method including: a terminal device receiving at least a portion of candidate transmission positions among M candidate transmission positions within a transmission window, receiving at least a portion of synchronization signal blocks among M synchronization signal blocks, the M
  • the starting positions of the candidate sending positions are the first candidate starting positions; wherein, the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions are all Among the N candidate transmission positions that can be used as starting positions of the M candidate transmission positions corresponding to the M synchronization signal blocks, the first candidate starting position belongs to the P candidate starting positions,
  • the M is less than the N
  • the P is greater than 1 or less than or equal to N.
  • a network device for performing the method in the first aspect or the second aspect.
  • the network device includes a functional module for performing the method of the first aspect or the second aspect.
  • a terminal device for performing the method in the third aspect or the fourth aspect.
  • the terminal device includes a function module for performing the method of the third aspect or the fourth aspect.
  • a network device including 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 method in the first aspect or the second aspect.
  • a terminal device including 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 method in the third aspect or the fourth aspect.
  • a chip is provided for implementing the method in any one of the first aspect to the fourth aspect.
  • the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the method as in any one of the first aspect to the fourth aspect described above.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method of any one of the first to fourth aspects above.
  • a computer program product including computer program instructions that cause a computer to perform the method of any one of the first to fourth aspects above.
  • a computer program which, when run on a computer, causes the computer to execute the method in any one of the first to fourth aspects above.
  • the number N of candidate sending positions of the transmission window used to send the synchronization signal block is greater than the number M of available synchronization signal blocks, therefore, the transmission time of the synchronization signal block can be increased, thereby improving The probability of successfully sending the SSB, and the first information indicates whether M synchronization signal blocks are transmitted, and the second information indicates that the M candidate transmission positions corresponding to the M synchronization signal blocks start within the transmission window.
  • the starting position, so that the corresponding candidate sending positions of the M synchronization signal blocks in the transmission window can be known, so as to determine the position of the actually sent synchronization signal blocks, which is convenient for the terminal device to perform rate matching, for example.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a time domain resource occupation diagram of a synchronization signal block provided by an embodiment of the present application.
  • FIG. 3 is a time-domain distribution diagram of an SSB Burst set provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a candidate sending position of a transmission window provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 12 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 13 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 14 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • 15 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System of Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Broadband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access, WiMAX
  • 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 referred to as a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the 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, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNodeB evolved base station in an LTE system
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-veh
  • the communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110.
  • terminal equipment includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (DSL), digital cables, and direct cable connections ; And / or another data connection / network; and / or via wireless interfaces, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and / or another terminal device configured to receive / transmit communication signals; and / or Internet of Things (IoT) equipment.
  • PSTN Public Switched Telephone Networks
  • DSL Digital Subscriber Lines
  • WLAN wireless local area networks
  • digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter
  • IoT Internet of Things
  • a terminal device configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", “wireless terminal”, or “mobile terminal”.
  • mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communication capabilities; can include radiotelephones, pagers, Internet / internal PDA with network access, web browser, notepad, calendar, and / or Global Positioning System (GPS) receiver; and conventional laptop and / or palm-type receivers or others including radiotelephone transceivers Electronic device.
  • PCS Personal Communication Systems
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device.
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network, or terminal devices in a future-evolving PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • terminal equipment 120 may perform terminal direct connection (Device to Device, D2D) communication.
  • the 5G 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 terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiments 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 and a terminal device 120 with a communication function, and 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 embodiments of the present application.
  • the embodiment of the present application relates to the transmission of a synchronization signal block (Synchronization Signal Block, SSB) (SS / PBCH Block), and the synchronization signal block will be described below.
  • SSB Synchronization Signal Block
  • the SSB may include a synchronization signal (Synchronization Signal, SS) and a physical broadcast channel (Physical Broadcasting Channel, PBCH).
  • SS Synchronization Signal
  • PBCH Physical Broadcasting Channel
  • the SSB can cover the entire cell through multi-beam scanning to facilitate reception by UEs in the cell.
  • Multi-beam transmission of synchronization signal blocks is achieved by defining SS / PBCH clusters (SS / PBCH bursts).
  • An SS burst also called SS burst) contains one or more SSBs.
  • One SSB is used to carry the synchronization signal and broadcast channel of one beam. Therefore, an SS / PBCH burst can contain the synchronization signals of the number of SSB beams in the cell.
  • the maximum number of SSBs can be related to the frequency band of the system.
  • the maximum number is equal to 4.
  • the maximum number is equal to 8.
  • the maximum number is equal to 64.
  • An SSB can contain a symbol's primary synchronization signal (Primary, Synchronization, Signal, PSS), a symbol's secondary synchronization signal (Secondary, Synchronization, Signal, SSS), and two symbols of NR-PBCH (New Radio, Access, Technology-Physical, broadcast channel, physical Broadcast channel), for example, as shown in FIG. 2.
  • PBCH New Radio, Access, Technology-Physical, broadcast channel, physical Broadcast channel
  • All SSBs in the SS / PBCH burst can be sent within a 5ms time window, and are sent repeatedly at a certain period.
  • the period is configured by high-level parameters (for example, SSB-timing), including 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.
  • the distribution of the time slots of the SSB in different subcarrier intervals and frequency bands can be shown in FIG. 3, where the dark gray filled part in FIG. 3 can be the transmission position of the SSB.
  • a slot contains 14 symbols and can carry two SSBs.
  • Four SSBs are distributed in the first two slots in the 5ms time window.
  • L is the maximum number of SSBs, and the actual number of SSBs sent may be less than L.
  • the base station may notify the actually transmitted SSB by way of bit mapping.
  • the base station can notify the UE of the specific SSB transmission location by broadcasting 8 bits of information. Each bit represents the transmission and Otherwise, for the UE to do rate matching.
  • Unlicensed spectrum is a spectrum allocated by countries and regions that can be used for radio equipment communication. This spectrum is generally regarded as a shared spectrum, that is, as long as the communication equipment in different communication systems meets the regulatory requirements set by the country or region on the spectrum Using this spectrum, you can not apply for a proprietary spectrum license from the government.
  • some countries or regions have stipulated the regulatory requirements that must be met when using unlicensed spectrum. For example, in Europe, communication devices follow the "listen-before-talk" (LBT) principle, that is, communication devices need to perform channel interception before sending signals on channels of unlicensed spectrum.
  • LBT listen-before-talk
  • the communication device can transmit signals; if the channel interception result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot transmit signals. And in order to ensure fairness, in a transmission, the communication device uses the channel of the unlicensed spectrum for signal transmission for a period of time that cannot exceed the maximum channel occupation time (Maximum Channel Occupation Time, MCOT).
  • Maximum Channel Occupation Time, MCOT Maximum Channel Occupation Time
  • NR technology can be used for transmission on unlicensed spectrum.
  • the SSB transmission time shown in FIG. 3 may not be able to successfully send the SSB. Therefore, in the embodiment of the present application, the SSB transmission opportunity may be increased, and a new SSB transmission time may be defined.
  • the number of SSB candidate sending positions configured by the network device is greater than the maximum SSB that the network device can send in the transmission window Quantity L.
  • the network device may determine to use the candidate positions available in the Y candidate sending positions to transmit L SSBs according to the detection result of the LBT in the transmission window.
  • the candidate sending location used may be different. Therefore, it is necessary to consider how to indicate the candidate sending positions used in a transmission window.
  • FIG. 4 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application.
  • the method 200 includes at least part of the following content.
  • the network device sends first information indicating the sending information of M synchronization signal blocks, and the sending information indicates whether the synchronization signal block is sent;
  • the network device sends second information indicating the first starting position, the first starting position being the corresponding starting position of the M synchronization signal blocks in the transmission window, where,
  • the transmission window includes N candidate sending positions, the M synchronization signal blocks correspond to M candidate sending positions, and M is less than N.
  • FIG. 5 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application.
  • the method 300 includes at least part of the following content.
  • the terminal device receives first information that indicates transmission information of M synchronization signal blocks, and the transmission information indicates whether the synchronization signal block is transmitted;
  • the terminal device receives second information indicating the first starting position, where the first starting position is the corresponding starting position of the M synchronization signal blocks in the transmission window, where,
  • the transmission window includes N candidate sending positions, the M synchronization signal blocks correspond to M candidate sending positions, and M is less than N.
  • the terminal device may determine the position of the synchronization signal block actually transmitted in the transmission window according to the first information and the second information, so that rate matching of downlink data reception can be performed.
  • the number N of candidate sending positions of the transmission window used to send the synchronization signal block is greater than the number M of available synchronization signal blocks, therefore, the transmission time of the synchronization signal block can be increased, thereby improving the transmission window
  • the probability of successfully sending the SSB, and the first information indicates whether M synchronization signal blocks are transmitted, and the second information indicates that the M candidate transmission positions corresponding to the M synchronization signal blocks start within the transmission window.
  • the starting position, so that the corresponding candidate sending positions of the M synchronization signal blocks in the transmission window can be known, so as to determine the position of the actually sent synchronization signal blocks, which is convenient for the terminal device to perform rate matching, for example.
  • the M synchronization signal blocks indicated by the first information may be synchronization signal blocks that are allowed to be sent in a transmission window at the maximum.
  • Each synchronization signal block corresponds to an SSB index, and different synchronization signal blocks correspond to different SSB indexes.
  • the M synchronization signal blocks may be all synchronization signal blocks included in the SS burst.
  • M synchronization signal blocks may correspond to M candidate sending positions
  • the transmission window may be referred to as a discovery reference signal (Discovery Reference Signal, DRS) transmission window.
  • the transmission window may include N candidate sending positions, and each candidate sending position may be used to send the SSB.
  • the two adjacent candidate sending positions included in the transmission window may be continuous or discontinuous in the time domain (for example, may be separated by at least one symbol, at least one time slot, etc.).
  • the SSB index corresponding to each candidate sending position in the transmission window may not be fixed.
  • the SSB can be transmitted at the candidate transmission position in the order of SSB index 0 to SSB index M-1.
  • M synchronization signal blocks can correspond to M candidate transmission positions, even if a certain synchronization signal block does not need to be transmitted, at this time, for the next synchronization signal block, the transmission position corresponding to the certain synchronization signal can be skipped.
  • the candidate transmission position corresponding to the next synchronization signal block performs transmission of the next synchronization signal block, that is, does not occupy the transmission position of the certain synchronization signal block.
  • the embodiments of the present application may not be limited to this, for example, even if a certain synchronization signal block does not need to be transmitted, at this time, for the next synchronization signal block, it is not necessary to skip a candidate transmission position.
  • the SSB index corresponding to each candidate sending position in the transmission window may also be fixed. In other words, for a specific candidate transmission location, it corresponds to a specific SSB index. For a particular SSB index, the corresponding candidate sending position in the transmission window may appear periodically.
  • a transmission window may include 64 candidate sending positions (the first row of numbers in FIG. 6 represent candidate sending positions), M may be equal to 8, and the value of the SSB index may be To 7, each candidate sending position can correspond to a specific SSB index (the second row of numbers represents the SSB index corresponding to each candidate sending position), as can be seen from FIG. 6, the candidate sending position corresponding to each SSB index It is periodic, and the number of corresponding candidate sending positions is 8.
  • the M candidate sending positions are continuous within the transmission window.
  • the 8 candidate transmission positions no matter which candidate transmission position starts from, the 8 candidate transmission positions are continuous and may correspond to 8 indexed synchronization signal blocks.
  • the transmission window includes P candidate start positions, and the candidate start positions are M of the N candidate sending positions that can be used as the M synchronization signal blocks.
  • the candidate sending positions of the starting positions of the candidate sending positions, the P candidate starting positions include the first starting position, the P is greater than 1 and less than or equal to the N.
  • every 4 candidate sending positions can have a candidate starting position (only a part of the candidate starting positions are shown in the figure), and from this candidate starting position, 8 indexes can be performed. Synchronization signal block transmission (only part of the synchronization signal block can be actually transmitted).
  • the LBT operation may be performed before the candidate start position, and if the LBT operation is successful, the SSB transmission may be started at the candidate start position. If LBT fails, you need to wait until the next candidate starting position and perform the LBT operation before the next candidate starting position.
  • the LBT operations at the first five candidate start positions all fail. If the LBT performed before the sixth candidate start position succeeds, the SSB can be started at the sixth candidate start position send.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate transmission positions spaced between every two candidate start positions is four.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the number of candidate sending positions spaced between every two candidate starting positions is 4, and 4 is less than 8. In this implementation manner, it is possible to avoid the problem of waste of the transmission positions caused by the candidate transmission position having an interval between every two candidate starting positions being greater than M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the number of candidate sending positions spaced between every two candidate starting positions is 4, and 8 is 2 times 4.
  • the M candidate transmission positions corresponding to the M synchronization signal blocks may be equal to the candidate transmission positions between two candidate transmission positions (which may be adjacent or non-adjacent).
  • the candidate transmission positions corresponding to the specific synchronization signal blocks can be repeatedly displayed, and the problem of waste of the candidate transmission positions caused by the candidate transmission positions not corresponding to any synchronization signal blocks can also be avoided.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the corresponding candidate sending position at the candidate sending position 56 may be used as the last candidate starting position in the transmission window. Therefore, all synchronization signal blocks of the M synchronization signal blocks that cannot correspond to the remaining candidate transmission positions at the last candidate starting position can be avoided.
  • the P candidate start positions are uniformly or non-uniformly distributed within the transmission window.
  • each candidate sending position in the transmission window can be used as the candidate starting position.
  • the LBT performed before the sending time corresponding to the SSB index 0 fails, it can continue Channel monitoring, channel monitoring at the sending time corresponding to SSB index 1, if the LBT fails, the LBT performed before the sending time corresponding to SSB index 2 is successful, then the remaining SSB is sent starting from SSB index 2, and after the sending is completed After the SSB index 7, the SSB indexes 0 and 1 that were not successfully sent before are sent.
  • the first information indicates transmission information of the M synchronization signal blocks by way of bit mapping.
  • the first information indicates the transmission information according to the index order of the M synchronization signal blocks.
  • the first information may be sent in a non-dynamic manner, for example, through an RRC message, system information, or broadcast message.
  • the network device Since the first information is sent non-dynamically, the network device cannot predict the position where channel listening can succeed. For example, as shown in FIG. 6, some start positions are corresponding to index 4 and some start positions are index 0. Corresponding location, so the network device cannot indicate the transmission information of each synchronization signal block in the order of the corresponding candidate transmission location. Therefore, the transmission information of the synchronization signal block can be indicated according to the indexes of the M synchronization signal blocks.
  • Fig. 6 suppose that the starting position of successful LBT listening is 20, although the sequence of SSB burst actually sent in the figure is 4, 5, 6, 7, 0, 1, 2, 3.
  • the first information is at the M candidate transmission positions through the number of synchronization signal blocks actually transmitted in the M synchronization signal blocks or the actually transmitted synchronization signal blocks
  • the end position in indicates the sending information.
  • the candidate transmission position occupied by the actually transmitted synchronization signal block includes: at least one continuous candidate transmission position among the M candidate transmission positions with the first starting position as a starting point.
  • the SSB is transmitted on the unlicensed spectrum. Due to the limitation of the channel occupation time, the preferred transmission method is to continuously transmit the SSB, that is, the actually transmitted SSB is sequentially transmitted in front of 8 positions in the SSB burst.
  • the first information may include information on the number of actually sent SSBs, that is, the actual sending position of the SSB may be indicated. At this time, if M is equal to 8, the first information only needs 3 bits to indicate 1-8 actually sent SSBs.
  • the second information indicates the first starting position by the position of the first starting position among the P candidate starting positions. For example, assuming that there are 16 candidate start positions, it can be indicated by 4-bit information that the first start position is the number of candidate start positions among the 16 candidate start positions.
  • the sixth position among the possible start positions defined in the DRS window is the start position of the SSB burst actually sent.
  • the actual sending position of the SSB in the DRS window can be obtained.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the starting position indication information (second information) of the SSB burst is indicated by a channel or signal associated with the starting position, and the UE obtains the starting position of the SSB burst by detecting the indication information or signal itself carried by the channel.
  • each possible start position in FIG. 6 is associated with a PDCCH search space, and the UE obtains the DCI carried by the PDCCH by detecting the corresponding search space, and obtains whether the associated start position is the actual start position of the SSB burst.
  • the PDCCH may be a group common PDCCH, and the search space is a common search space.
  • the DCI carries 1-bit indication information.
  • the indication information may also be a signal associated with the start position, such as a sequence, a reference signal, etc.
  • the UE obtains second information about the actual start position of the SSB burst according to the detection of the signal.
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • the first information and the second information may be sent in the same physical downlink control channel (Physical Downlink Control Channel, PDCCH) or different PDCCHs.
  • PDCCH Physical Downlink Control Channel
  • the number N of candidate sending positions of the transmission window used to send the synchronization signal block is greater than the number M of available synchronization signal blocks, therefore, the transmission time of the synchronization signal block can be increased, thereby improving the transmission window
  • the probability of successfully sending the SSB, and the first information indicates whether M synchronization signal blocks are transmitted, and the second information indicates that the M candidate transmission positions corresponding to the M synchronization signal blocks start within the transmission window.
  • the starting position, so that the corresponding candidate sending positions of the M synchronization signal blocks in the transmission window can be known, so as to determine the position of the actually sent synchronization signal blocks, which is convenient for the terminal device to perform rate matching, for example.
  • FIG. 7 is a schematic block diagram of a wireless communication method 400 according to an embodiment of the present application. As shown in FIG. 4, the method 400 includes at least part of the following content.
  • the network device performs transmission of at least a part of the synchronization signal blocks among the M synchronization signal blocks at least part of the candidate transmission positions in the transmission window, and the starting position of the M candidate transmission positions Is the first candidate starting position;
  • the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions are the M synchronization signal blocks among the N candidate sending positions.
  • FIG. 8 is a schematic block diagram of a wireless communication method 500 according to an embodiment of the present application. As shown in FIG. 4, the method 500 includes at least part of the following content.
  • the terminal device receives at least part of the M candidate transmission positions among the M candidate transmission positions in the transmission window, and the start position of the M candidate transmission positions is the first A candidate starting position;
  • the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions are the M synchronization signal blocks among the N candidate sending positions.
  • the network device may perform blind detection on the synchronization signal block at one or more of the M candidate transmission positions.
  • the candidate transmission positions for the blind detection may depend on specific situations, which is not specifically limited in the embodiments of the present application.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the P candidate start positions are non-uniformly distributed within the transmission window.
  • the synchronization signal block is sent on an unlicensed spectrum.
  • the channel interception performed by the network device for transmitting the synchronization signal signal is successful.
  • the method further includes:
  • the network device sends indication information indicating the first candidate starting position.
  • the description of the indication information can refer to the description about the second information above.
  • the indication information indicates the first candidate starting position by the position of the first candidate starting position among the P candidate starting positions.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control RRC signaling.
  • the network device performs transmission of at least a part of the synchronization signal blocks among the M synchronization signal blocks in at least part of the candidate transmission positions among the M candidate transmission positions in the transmission window
  • the starting position of the position is the first candidate starting position
  • the number N of candidate sending positions of the transmission window used to send the synchronization signal block is greater than the number M of available synchronization signal blocks, therefore, the transmission time of the synchronization signal block can be increased, thereby improving the transmission window
  • the probability of successfully sending the SSB, and there are multiple candidate starting positions, can increase the opportunity to start sending the SSB, which can further improve the probability of successfully sending the SSB in the transmission window.
  • the network device 600 includes a communication unit 610 for:
  • Sending first information the first information indicating sending information of M synchronization signal blocks, the sending information indicating whether the synchronization signal block is sent;
  • the second information indicating a first starting position, where the first starting position is a corresponding starting position of the M synchronization signal blocks in the transmission window, where the transmission window includes N
  • the M synchronization signal blocks correspond to M candidate transmission positions, M is less than N.
  • the M candidate sending positions are continuous within the transmission window.
  • the first information indicates transmission information of the M synchronization signal blocks by way of bit mapping.
  • the first information indicates the sending information according to the index order of the M synchronization signal blocks.
  • the first information is at the M candidate transmission positions through the number of synchronization signal blocks actually transmitted in the M synchronization signal blocks or the actually transmitted synchronization signal blocks
  • the end position in indicates the sending information.
  • the candidate transmission positions occupied by the actually transmitted synchronization signal blocks include: at least one continuous candidate among the M candidate transmission positions that uses the first starting position as a starting point Send location.
  • the transmission window includes P candidate start positions, and the candidate start positions are M of the N candidate sending positions that can be used as the M synchronization signal blocks.
  • the candidate sending positions of the starting positions of the candidate sending positions, the P candidate starting positions include the first starting position, the P is greater than 1 and less than or equal to the N.
  • the second information indicates the first starting position by the position of the first starting position among the P candidate starting positions.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the P candidate start positions are non-uniformly distributed within the transmission window.
  • the synchronization signal block is sent on an unlicensed spectrum.
  • the channel interception performed by the network device for transmitting the synchronization signal signal is successful.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control RRC signaling.
  • network device 600 can implement the corresponding operations of the method 200 implemented by the network device, and for the sake of brevity, no further description is provided here.
  • FIG. 10 is a schematic block diagram of a network device 700 according to an embodiment of the present application.
  • the network device 700 includes a communication unit 710 for:
  • At least part of the candidate transmission positions among the M candidate transmission positions in the transmission window at least part of the synchronization signal blocks among the M synchronization signal blocks are transmitted, and the start position of the M candidate transmission positions is the first candidate start position;
  • the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions are the M synchronization signal blocks among the N candidate sending positions.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the P candidate start positions are non-uniformly distributed within the transmission window.
  • the synchronization signal block is sent on an unlicensed spectrum.
  • the channel interception performed by the network device for transmitting the synchronization signal signal is successful.
  • the communication unit 710 is further used to:
  • the indication information indicates the first candidate starting position by the position of the first candidate starting position among the P candidate starting positions.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control RRC signaling.
  • the network device 700 may implement the corresponding operation of the method 300 implemented by the network device, and for the sake of brevity, no further details are provided here.
  • the terminal device 800 includes a communication unit 810 for:
  • the first information indicating transmission information of M synchronization signal blocks, the transmission information indicating whether the synchronization signal block is transmitted;
  • the second information indicating a first starting position, the first starting position being the corresponding starting position of the M synchronization signal blocks in the transmission window, wherein the transmission window includes N
  • the M synchronization signal blocks correspond to M candidate transmission positions, M is less than N.
  • the M candidate sending positions are continuous within the transmission window.
  • the first information indicates transmission information of the M synchronization signal blocks by way of bit mapping.
  • the first information indicates the sending information according to the index order of the M synchronization signal blocks.
  • the first information is at the M candidate transmission positions through the number of synchronization signal blocks actually transmitted in the M synchronization signal blocks or the actually transmitted synchronization signal blocks
  • the end position in indicates the sending information.
  • the candidate transmission positions occupied by the actually transmitted synchronization signal blocks include: at least one continuous candidate among the M candidate transmission positions that uses the first starting position as a starting point Send location.
  • the transmission window includes P candidate start positions, and the candidate start positions are M of the N candidate sending positions that can be used as the M synchronization signal blocks.
  • the candidate sending positions of the starting positions of the candidate sending positions, the P candidate starting positions include the first starting position, the P is greater than 1 and less than or equal to the N.
  • the second information indicates the first starting position by the position of the first starting position among the P candidate starting positions.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the P candidate start positions are non-uniformly distributed within the transmission window.
  • the synchronization signal block is sent on an unlicensed spectrum.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control RRC signaling.
  • the terminal device 800 further includes a processing unit 820, which is used to:
  • a synchronization signal block actually transmitted among the M synchronization signal blocks is determined.
  • terminal device 800 may implement the corresponding operation of the method 400 implemented by the terminal device, and for the sake of brevity, no further description is provided here.
  • the terminal device 900 includes a communication unit 910 for:
  • the transmission window includes N candidate sending positions, and the N candidate sending positions include P candidate starting positions, and the candidate starting positions are the M synchronization signal blocks among the N candidate sending positions.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is the same.
  • the number of candidate sending positions spaced between every two candidate starting positions in the P candidate starting positions is less than or equal to the M.
  • the M is an integer multiple of the number of candidate sending positions spaced between every two starting candidate positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of candidate sending positions included is greater than each of the P candidate start positions The number of candidate sending positions spaced between two candidate starting positions.
  • the transmission window starts from the last candidate start position among the P candidate start positions, and the number of included candidate sending positions is greater than or equal to the M.
  • the P candidate start positions are non-uniformly distributed within the transmission window.
  • the synchronization signal block is sent on an unlicensed spectrum.
  • the communication unit 910 is further configured to:
  • the indication information indicates the first candidate starting position by the position of the first candidate starting position among the P candidate starting positions.
  • the second information is carried by a physical downlink control channel PDCCH sent by a search space associated with the first starting position, by a sequence associated with the first starting position, or by The reference signal associated with the first starting position is carried.
  • PDCCH physical downlink control channel
  • the first information is carried by PDCCH, system information, broadcast message, or radio resource control RRC signaling.
  • terminal device 900 may implement the corresponding operation of the method 500 implemented by the terminal device, and for the sake of brevity, details are not described herein again.
  • FIG. 13 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application.
  • the communication device 1000 shown in FIG. 13 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 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 embodiments 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 communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 1030 may include a transmitter and a receiver.
  • the transceiver 1030 may further include antennas, and the number of antennas may be one or more.
  • the communication device 1000 may specifically be a network device according to an embodiment of the present application, and the communication device 1000 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .
  • the communication device 1000 may specifically be a mobile terminal / terminal device according to an embodiment of the present application, and the communication device 1000 may implement the corresponding process implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, for simplicity , Will not repeat them here.
  • FIG. 14 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1100 shown in FIG. 14 includes a processor 1110, and the processor 1110 can call and run a computer program from the memory to implement the method in the embodiments of the present application.
  • the chip 1100 may further include a memory 1120.
  • the processor 1110 can call and run the computer program from the memory 1120 to implement the method in the embodiments of the present application.
  • the memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.
  • the chip 1100 may further include an input interface 1130.
  • the processor 1110 can control the input interface 1130 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 1100 may further include an output interface 1140.
  • the processor 1110 can control the output interface 1140 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip may be applied to the network device in the embodiment of the present application, and the chip may 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 embodiments of the present application, and the chip can implement the corresponding process implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. No longer.
  • chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.
  • the communication system 1200 includes a terminal device 1210 and a network device 1220.
  • the terminal device 1210 may be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 1220 may be used to implement the corresponding functions implemented by the network device in the above method.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a 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 (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA) or other available 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 may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and 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 volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable 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 static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiments 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) 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 memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiments 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 embodiments 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 embodiments of the present application.
  • the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal / terminal device in each method of the embodiments of the present application For the sake of brevity, I will not repeat them here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments 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. Repeat again.
  • the computer program product may be applied to the mobile terminal / terminal device in the embodiments 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 embodiments of the present application, For brevity, I will not repeat them here.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. , Will not repeat them here.
  • the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application.
  • the computer program runs on the computer, the computer is implemented by the mobile terminal / terminal device in performing various methods of the embodiments of the present application For the sake of brevity, I will not repeat them here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or 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 may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment 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 functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or 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 enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the 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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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention porte, selon le mode de réalisation, sur un procédé et sur des dispositifs de communication sans fil, qui peuvent augmenter le temps de transmission d'un bloc de signal de synchronisation, ce qui permet d'améliorer la probabilité de transmission réussie d'un bloc SSB dans une fenêtre de transmission. Le procédé comprend les étapes suivantes : un dispositif de réseau transmet des premières informations indiquant des informations de transmission de M blocs de signaux de synchronisation, les informations de transmission indiquant si les blocs de signaux de synchronisation sont transmis ; le dispositif de réseau transmet des secondes informations indiquant une première position de départ, la première position de départ étant une position de départ correspondante des M blocs de signaux de synchronisation dans la fenêtre de transmission ; la fenêtre de transmission comprend N positions de transmission candidates, les M blocs de signaux de synchronisation correspondent à M positions de transmission candidates et M est inférieur à N.
PCT/CN2018/117307 2018-11-23 2018-11-23 Procédé de communication sans fil, dispositif de réseau et dispositif terminal WO2020103160A1 (fr)

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