WO2020156011A1 - 一种传输同步信号的方法及终端设备 - Google Patents

一种传输同步信号的方法及终端设备 Download PDF

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Publication number
WO2020156011A1
WO2020156011A1 PCT/CN2019/130549 CN2019130549W WO2020156011A1 WO 2020156011 A1 WO2020156011 A1 WO 2020156011A1 CN 2019130549 W CN2019130549 W CN 2019130549W WO 2020156011 A1 WO2020156011 A1 WO 2020156011A1
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synchronization signal
symbol
primary synchronization
primary
synchronization signals
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PCT/CN2019/130549
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English (en)
French (fr)
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袁璞
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华为技术有限公司
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Priority to EP19913358.8A priority Critical patent/EP3893565A4/en
Publication of WO2020156011A1 publication Critical patent/WO2020156011A1/zh
Priority to US17/391,764 priority patent/US11889444B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0073—Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0076—Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2663—Coarse synchronisation, e.g. by correlation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • This application relates to the field of communication technology, and in particular to a method and terminal equipment for transmitting synchronization signals.
  • the synchronization signal block (synchronization signal block, SSB) is a signal structure defined in the new radio (NR), which includes the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) And the physical broadcast channel (physical broadcast channel, PBCH).
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • D2D Device to device
  • S2D Device to device
  • S-SSB sidelink synchronization signal block
  • S-PSS sidelink primary synchronization signal
  • S-SSS sidelink Secondary synchronization signal
  • PBCH physical broadcast channel
  • S-PSS and S-SSS are repeated once in adjacent symbol bits respectively, that is, S-SSB includes two adjacent symbol bits of S -PSS and S-SSS of two adjacent symbol bits, for example, S-SSB includes adjacent first S-PSS and second S-PSS, and adjacent first S-SSS and second S-SSS
  • the number of symbol intervals between the first S-PSS and the first S-SSS is the same as the number of symbol intervals between the second S-PSS and the second S-SSS. If the terminal device detects only one S-PSS And an S-SSS, it may happen that the terminal device cannot accurately determine the sign bit of the detected S-PSS.
  • This application provides a method and terminal equipment for transmitting synchronization signals, which can accurately determine the symbol position of the S-PSS.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, Wherein, each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one primary synchronization signal among the M primary synchronization signals and all The N symbol intervals between the N auxiliary synchronization signals, and any two symbol interval sets in the M symbol interval sets do not include the same symbol interval, and the M and N are positive or greater than 2. Integer
  • the first terminal device sends the synchronization signal block.
  • the values of M and N may be the same or different, which is not limited in this application.
  • one symbol interval set of the M symbol interval sets includes the M primary synchronization signals N symbol intervals between one primary synchronization signal and the N secondary synchronization signals, and any two symbol interval sets in the M symbol interval sets do not contain the same symbol interval, then each symbol interval corresponds to A unique set of symbol intervals, and the set of symbol intervals corresponds to a unique primary synchronization signal
  • the second terminal device can determine whether one primary synchronization signal in the detected at least one primary synchronization signal and the detected at least one secondary synchronization signal are The symbol interval between one secondary synchronization signal of the at least one primary synchronization signal is determined by which primary synchronization signal in the synchronization signal block, because the second terminal device can pre-store the M primary synchronization signal in the synchronization signal block. According to the correspondence between the synchronization
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each of the M primary synchronization signals corresponds to A set of symbol intervals, one set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M Any two symbol interval sets in the two symbol interval sets do not contain the same symbol interval, and the M and N are positive integers greater than or equal to 2;
  • the first terminal device sends the synchronization signal block;
  • the second terminal The device detects the primary synchronization signal and the secondary synchronization signal, where the primary synchronization signal and the secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, so Each of the M primary synchronization signals corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one primary synchronization
  • the terminal device when the terminal device detects only one S-PSS and one S-SSS, since the symbol interval set corresponding to each primary synchronization signal does not contain the same number of symbol intervals, the terminal device can detect The number of symbol intervals between S-PSS and S-SSS accurately determines the symbol position of S-PSS.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the second terminal device may first receive M primary synchronization signals in the synchronization signal block, and detect these M primary synchronization signals, and then detect the M primary synchronization signals in the synchronization signal block after detecting the M primary synchronization signals.
  • N auxiliary synchronization signals do not need to buffer additional data, which reduces the buffering overhead of the second terminal device.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, wherein the at least one primary synchronization signal Belongs to the same synchronization signal block as the at least one secondary synchronization signal, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, and each primary synchronization signal of the M primary synchronization signals corresponds to one A set of symbol intervals, a set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M Any two symbol interval sets in the symbol interval set do not include the same symbol interval, and the M and N are positive integers greater than or equal to 2;
  • the second terminal device determines each of the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal.
  • the symbol position of the main synchronization signal is the symbol position of the main synchronization signal.
  • the second terminal device determines the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal.
  • the symbol position of each primary synchronization signal in the at least one primary synchronization signal includes:
  • the second terminal device determines the value of the primary synchronization signal corresponding to the symbol interval set to which the symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal belongs.
  • the symbol position is the symbol position of the one primary synchronization signal, wherein the symbol interval set belongs to the M symbol interval sets.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals , Wherein the value of M is 1 and the N is a positive integer greater than 1, or, the M is a positive integer greater than 1 and the value of N is 1, and when the M is greater than 1, When a positive integer and the value of N is 1, the symbol intervals of any two of the M primary synchronization signals and one secondary synchronization signal are different, and the M primary synchronization signals and M symbol positions correspond;
  • the first terminal device sends the synchronization signal block.
  • the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1. In some embodiments, there are M symbol intervals between M primary synchronization signals and one secondary synchronization signal, that is, there is 1 symbol between each secondary synchronization signal in the M primary synchronization signals and one secondary synchronization signal.
  • the second terminal device can be based on the symbol interval between one primary synchronization signal in the detected at least one primary synchronization signal and the detected one secondary synchronization signal , Determine which one of the main synchronization signals in the at least one main synchronization signal is in the synchronization signal block, because the second terminal device can pre-store the correspondence between the M main synchronization signals and the M symbol positions in the synchronization signal block , The second terminal device may determine the symbol position of one of the at least one primary synchronization signal according to the M primary synchronization signals and the M symbol positions.
  • the synchronization signal block includes only 1 primary synchronization signal and N secondary synchronization signals, where N is a positive integer greater than 1. Since the main synchronization signal block contains only one S-PSS, the terminal device can accurately determine the symbol position of the S-PSS based on the detected correspondence between the S-PSS and the symbol position.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a second terminal device detects at least one primary synchronization signal and one secondary synchronization signal, where the at least one primary synchronization signal and The one secondary synchronization signal belongs to the same synchronization signal block, the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, the M is a positive integer greater than 1, and the M primary synchronization signals The symbol interval of any two primary synchronization signals in is different from the one secondary synchronization signal;
  • the second terminal device determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and the one secondary synchronization signal .
  • the present application provides a method for transmitting a synchronization signal.
  • the method for transmitting a synchronization signal includes: a second terminal device detects a primary synchronization signal, where the one primary synchronization signal belongs to a synchronization signal block, and the synchronization
  • the signal block only includes M primary synchronization signals and N secondary synchronization signals, the value of M is 1 and the N is a positive integer greater than 1, and the M primary synchronization signals correspond to M symbol positions;
  • the second terminal device determines the symbol position of the one primary synchronization signal according to the correspondence between the M primary synchronization signals and the M symbol positions.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, where the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, Wherein, each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one primary synchronization signal among the M primary synchronization signals and all
  • the N symbol intervals between the N auxiliary synchronization signals, and the sequences of any two auxiliary synchronization signals in the N auxiliary synchronization signals are different, and the N sequences of the N auxiliary synchronization signals correspond to the N symbol positions ,
  • the M and N are positive integers greater than or equal to 2; the first terminal device sends the synchronization signal block.
  • the second terminal device may be based on the sequence of one secondary synchronization signal in the at least one secondary synchronization signal, the N sequences of the N secondary synchronization signals and the N preset symbol positions To determine the symbol position of the one secondary synchronization signal.
  • the second terminal equipment is based on the symbol position of the one secondary synchronization signal and The symbol interval between the one secondary synchronization signal and one of the at least one primary synchronization signal determines the symbol position of the one primary synchronization signal.
  • the second terminal device can detect The symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the detected at least one secondary synchronization signal, determining that one primary synchronization signal in the at least one primary synchronization signal is in the synchronization signal block Which primary synchronization signal is, because the second terminal device can pre-store the corresponding relationship between the M primary synchronization signals and the M symbol positions in the synchronization signal block, the
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, wherein the at least one primary synchronization signal Belongs to the same synchronization signal block as the at least one secondary synchronization signal, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, and each primary synchronization signal of the M primary synchronization signals corresponds to one A set of symbol intervals, a set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the N
  • the sequences of any two auxiliary synchronization signals in the auxiliary synchronization signal are different, the N sequences of the N auxiliary synchronization signals correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2;
  • the second terminal device determines the at least one secondary synchronization signal according to the sequence of the secondary synchronization signal in the at least one secondary synchronization signal and the correspondence between the N sequences of the N secondary synchronization signals and the N preset symbol positions The symbol position of the auxiliary synchronization signal in the signal;
  • the second terminal device is based on the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and the secondary synchronization signal in the at least one secondary synchronization signal and each primary synchronization signal in the at least one primary synchronization signal.
  • the symbol interval between determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, the synchronization signal block includes M primary synchronization signals, wherein the M The sequences of any two primary synchronization signals in the primary synchronization signal are different, the M sequences of the M primary synchronization signals correspond to M symbol positions, and the M is a positive integer greater than or equal to 2;
  • the first terminal device sends the synchronization signal block.
  • the terminal device can also accurately determine the symbol position of the primary synchronization signal according to the correspondence between the sequence of the primary synchronization signal and the symbol position.
  • the present application provides a method for transmitting a synchronization signal.
  • the method for transmitting a synchronization signal includes: a second terminal device detects at least one primary synchronization signal, and the at least one primary synchronization signal belongs to a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals, wherein the sequences of any two primary synchronization signals in the M primary synchronization signals are different, and the M sequences of the M primary synchronization signals correspond to M preset symbol positions ,
  • the M is a positive integer greater than or equal to 2;
  • the second terminal device determines the at least one primary synchronization signal according to the sequence of each primary synchronization signal in the at least one primary synchronization signal and the correspondence between the M sequences of the M primary synchronization signals and the M symbol positions The symbol position of each main synchronization signal in the signal.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, where the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein, each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one primary synchronization signal among the M primary synchronization signals and all N symbol intervals between the N auxiliary synchronization signals, and any two symbol interval sets in the M symbol interval sets are the same, the M and N are positive integers greater than or equal to 2, and the M, N Is an even number, the M/2 primary synchronization signals of the M primary synchronization signals are before the N secondary synchronization signals, and the M primary synchronization signals excluding the M/2 primary synchronization signals M/2 primary synchronization signals are after the N secondary synchronization signals, or N/2 secondary synchronization signals of the N secondary synchronization signals, or
  • the first terminal device sends the synchronization signal block.
  • the terminal device detects only one S-PSS and one S-SSS, even if the symbol interval set corresponding to each primary synchronization signal is the same, the terminal device can also detect the symbols between S-PSS and S-SSS The interval and time domain sequence accurately determine the symbol position of the S-PSS.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, and the at least one primary synchronization signal and At least one secondary synchronization signal belongs to the same synchronization signal block, where the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, and each of the M primary synchronization signals corresponds to A set of symbol intervals, one set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M Any two symbol interval sets in the two symbol interval sets are the same, the M and N are positive integers greater than or equal to 2, the M and N are even numbers, and M/2 of the M primary synchronization signals Before the N secondary synchronization signals, and among the M primary synchronization signals, M/2 primary synchronization signals other than the M/2 primary synchronization signals are after
  • the second terminal device determines the at least one primary synchronization signal based on the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal and the time domain sequence.
  • the symbol position of each primary synchronization signal in the synchronization signal, the time domain sequence includes the primary synchronization signal before the one primary synchronization signal and the secondary synchronization signal or the primary synchronization signal is after the one primary synchronization signal and the secondary synchronization signal.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a first terminal device generates a synchronization signal block, and the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal. Signal, wherein the M is a positive integer greater than 1, each of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M 1 symbol interval between one primary synchronization signal and the 1 secondary synchronization signal among the primary synchronization signals, and any two symbol interval sets in the M symbol interval sets are the same;
  • the first terminal device sends the synchronization signal block.
  • the terminal device When the terminal device detects only one S-PSS and one S-SSS, even if the symbol interval set corresponding to each primary synchronization signal is the same, the terminal device can also detect the time between S-PSS and S-SSS.
  • the field sequence accurately determines the symbol position of the S-PSS.
  • the present application provides a method for transmitting synchronization signals.
  • the method for transmitting synchronization signals includes: a second terminal device detects at least one primary synchronization signal and a secondary synchronization signal, the at least one primary synchronization signal and the The secondary synchronization signals belong to the same synchronization signal block, where the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, and the M is a positive integer greater than 1, and the M primary synchronization signals
  • Each primary synchronization signal corresponds to a symbol interval set, and one symbol interval set in the M symbol interval sets includes one of the M primary synchronization signals and the one secondary synchronization signal. Symbol interval, and any two symbol interval sets in the M symbol interval sets are the same;
  • the second terminal device determines the symbol of each primary synchronization signal in the at least one primary synchronization signal according to the time domain sequence between each primary synchronization signal and the secondary synchronization signal in the at least one primary synchronization signal Position, the time domain sequence includes the primary synchronization signal before the secondary synchronization signal or the primary synchronization signal after the secondary synchronization signal.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • this application provides a terminal device, which includes:
  • the processing module is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set , One symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the set of M symbol intervals Any two symbol interval sets in, do not include the same symbol interval, and the M and N are positive integers greater than or equal to 2;
  • the sending module is used to send the synchronization signal block.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M A primary synchronization signal and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval set of the M symbol interval sets includes the M primary synchronization signals N symbol intervals between one primary synchronization signal and the N secondary synchronization signals in the signal, and any two symbol interval sets in the M symbol interval sets do not include the same symbol interval, the M , N is a positive integer greater than or equal to 2;
  • a processing module configured to determine each of the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal The symbol position of the main synchronization signal.
  • the processing module is configured to determine a symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal;
  • the symbol position of the primary synchronization signal corresponding to the symbol interval set to which the symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal belongs is the one The symbol position of the primary synchronization signal, where the set of symbol intervals belongs to the set of M symbol intervals.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • this application provides a terminal device, which includes:
  • the processing module is used to generate a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, wherein the value of M is 1 and N is a positive integer greater than 1, or , The M is a positive integer greater than 1 and the value of N is 1, and when the M is a positive integer greater than 1 and the value of N is 1, any of the M primary synchronization signals
  • the symbol intervals of two primary synchronization signals and one secondary synchronization signal are different, and the M primary synchronization signals correspond to M symbol positions;
  • the sending module is used to send the synchronization signal block.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal and one secondary synchronization signal, wherein the at least one primary synchronization signal and the one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes only M A primary synchronization signal and one secondary synchronization signal, where M is a positive integer greater than 1, and any two primary synchronization signals in the M primary synchronization signals have different symbol intervals from the one secondary synchronization signal;
  • the processing module is configured to determine the symbol position of each primary synchronization signal in the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal and the one secondary synchronization signal in the at least one primary synchronization signal.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect a primary synchronization signal, where the one primary synchronization signal belongs to a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, and the value of M is 1 and the N is a positive integer greater than 1, and the M primary synchronization signals correspond to M symbol positions;
  • the processing module is configured to determine the symbol position of the one primary synchronization signal according to the correspondence between the M primary synchronization signals and the M symbol positions.
  • this application provides a terminal device, which includes:
  • the processing module is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set , One symbol interval set in the M symbol interval sets includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the N secondary synchronization signals
  • the sequences of any two secondary synchronization signals in the N are different, the N sequences of the N secondary synchronization signals correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2;
  • the sending module is used to send the synchronization signal block.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M A primary synchronization signal and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval set of the M symbol interval sets includes the M primary synchronization signals There are N symbol intervals between one primary synchronization signal and the N secondary synchronization signals in the signal, and the sequence of any two secondary synchronization signals in the N secondary synchronization signals is different, and the N secondary synchronization signals N sequences correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2;
  • a processing module configured to determine the at least one secondary synchronization signal according to the sequence of the secondary synchronization signal in the at least one secondary synchronization signal and the correspondence between the N sequences of the N secondary synchronization signals and the N preset symbol positions According to the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and each of the secondary synchronization signal and the at least one primary synchronization signal in the at least one secondary synchronization signal The symbol interval between the primary synchronization signals determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • this application provides a terminal device, which includes:
  • the processing module is used to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals, wherein the sequence of any two primary synchronization signals in the M primary synchronization signals is different, and the sequence of the M primary synchronization signals M sequences correspond to M symbol positions, where M is a positive integer greater than or equal to 2;
  • the sending module is used to send the synchronization signal block.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal, the at least one primary synchronization signal belonging to a synchronization signal block, wherein the synchronization signal block includes M primary synchronization signals, and any of the M primary synchronization signals
  • the sequences of the two primary synchronization signals are different, the M sequences of the M primary synchronization signals correspond to M preset symbol positions, and the M is a positive integer greater than or equal to 2;
  • a processing module configured to determine the at least one primary synchronization signal according to the sequence of each primary synchronization signal in the at least one primary synchronization signal and the correspondence between the M sequences of the M primary synchronization signals and the M symbol positions The symbol position of each main synchronization signal in the main synchronization signal.
  • this application provides a terminal device, which includes:
  • the processing module is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set , One symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the set of M symbol intervals
  • the set of any two symbol intervals in the M and N is the same, the M and N are positive integers greater than or equal to 2, the M and N are even numbers, and M/2 of the M primary synchronization signals are in the N Before the secondary synchronization signals, and among the M primary synchronization signals, the M/2 primary synchronization signals other than the M/2 primary synchronization signals are after the N secondary synchronization signals, or the N
  • the N/2 secondary synchronization signals in the secondary synchronization signal precede the M primary synchronization signals, and the N/2 secondary synchronization signals in the N secondary synchronization signals
  • the sending module is used to send the synchronization signal block.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal.
  • the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, where the synchronization signal block includes M primary synchronization signals.
  • Synchronization signals and N secondary synchronization signals wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M primary synchronization signals N symbol intervals between one primary synchronization signal and the N secondary synchronization signals in the signal, and any two symbol interval sets in the M symbol interval sets are the same, and the M and N are greater than or equal to 2.
  • the M and N are even numbers, the M/2 primary synchronization signals of the M primary synchronization signals precede the N secondary synchronization signals, and the M primary synchronization signals are divided by the M /2 primary synchronization signals other than M/2 primary synchronization signals are after the N secondary synchronization signals, or N/2 secondary synchronization signals among the N secondary synchronization signals are in the M primary synchronization signals Before, and the N/2 secondary synchronization signals other than the N/2 secondary synchronization signals among the N secondary synchronization signals are after the M primary synchronization signals;
  • a processing module configured to determine the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal and the time domain sequence
  • the symbol position of each primary synchronization signal in the signal, the time domain sequence includes the primary synchronization signal before the one primary synchronization signal and the secondary synchronization signal or the primary synchronization signal is after the one primary synchronization signal and the secondary synchronization signal.
  • this application provides a terminal device, which includes:
  • the processing module is used to generate a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, where the M is a positive integer greater than 1, and of the M primary synchronization signals
  • Each primary synchronization signal corresponds to a symbol interval set, and one symbol interval set in the M symbol interval sets includes one of the M primary synchronization signals and the one secondary synchronization signal.
  • Symbol interval, and any two symbol interval sets in the M symbol interval sets are the same;
  • the sending module is used to send the synchronization signal block.
  • this application provides a terminal device, which includes:
  • the receiving module is configured to detect at least one primary synchronization signal and secondary synchronization signal.
  • the at least one primary synchronization signal and the secondary synchronization signal belong to the same synchronization signal block, wherein the synchronization signal block includes only M primary synchronization signals Signal and 1 secondary synchronization signal, the M is a positive integer greater than 1, each of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets Includes one symbol interval between one primary synchronization signal and the one secondary synchronization signal among the M primary synchronization signals, and any two symbol interval sets in the M symbol interval sets are the same;
  • a processing module configured to determine the symbol position of each primary synchronization signal in the at least one primary synchronization signal according to the time domain sequence between each primary synchronization signal and the secondary synchronization signal in the at least one primary synchronization signal ,
  • the time domain sequence includes a primary synchronization signal before the secondary synchronization signal or a primary synchronization signal after the secondary synchronization signal.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the embodiments of the present application provide a terminal device, which has a function of implementing the behavior of the terminal device in the foregoing method.
  • the functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the terminal device may be a kind of user equipment.
  • an embodiment of the present application provides a computer storage medium for storing computer software instructions used for the above-mentioned terminal device, which contains the program designed for executing the above-mentioned aspect.
  • an embodiment of the present application provides a chip system including a processor, which is used to support a network device to implement the functions involved in the above aspects, for example, generating or processing the functions involved in the above methods. Data and/or information.
  • the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the network device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the embodiments of the present application provide a chip system including a processor for supporting terminal devices to implement the functions involved in the above aspects, for example, for receiving or processing data involved in the above methods And/or information.
  • the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each of the M primary synchronization signals corresponds to A set of symbol intervals, one set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M Any two symbol interval sets in the two symbol interval sets do not contain the same symbol interval, and the M and N are positive integers greater than or equal to 2;
  • the first terminal device sends the synchronization signal block;
  • the second terminal The device detects the primary synchronization signal and the secondary synchronization signal, where the primary synchronization signal and the secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, so Each of the M primary synchronization signals corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one primary synchronization
  • the terminal device when the terminal device detects only one S-PSS and one S-SSS, since the symbol interval set corresponding to each primary synchronization signal does not contain the same number of symbol intervals, the terminal device can detect The number of symbol intervals between S-PSS and S-SSS accurately determines the symbol position of S-PSS.
  • Figure 1 is a schematic diagram of the scene of the Internet of Vehicles
  • Figure 2 is a schematic diagram of an SSB resource structure
  • Figure 3 is a schematic diagram of an S-SSB resource structure
  • FIG. 4 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 5a to 5o are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 6a to 6h are schematic diagrams of the structure of a synchronization signal block in an embodiment of the application.
  • FIGS. 7a to 7i are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 8a to 8c are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 9a to 9d are schematic structural diagrams of synchronization signal blocks in an embodiment of the application.
  • FIG. 10 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 11a to 11f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 12a to 12e are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • FIGS. 13a to 13d are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 14a to 14e are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 15a to 15f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 16a to 16f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 17a to 17f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 18a to 18f are schematic structural diagrams of synchronization signal blocks in an embodiment of this application.
  • 19a to 19f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 20a to 20f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • FIG. 21 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • FIG. 22 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 23a to 23l are schematic diagrams of the structure of a synchronization signal block in an embodiment of the application.
  • 24a to 24h are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 25a to 25f are schematic structural diagrams of synchronization signal blocks in an embodiment of this application.
  • 26a and 26b are schematic diagrams of the structure of a synchronization signal block in an embodiment of the application.
  • FIG. 27 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 28a to 28l are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 29a to 29h are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • 30a to 30f are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • FIG. 31a and FIG. 31b are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application;
  • FIG. 32 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 33a to 33l are schematic diagrams of the structure of a synchronization signal block in an embodiment of this application.
  • FIG. 34 is a schematic diagram of a method for transmitting synchronization signals in an embodiment of this application.
  • 35a to 35d are schematic structural diagrams of synchronization signal blocks in an embodiment of the application.
  • FIG. 36 is a schematic structural diagram of a terminal device in an embodiment of this application.
  • FIG. 37 is a schematic structural diagram of a terminal device in an embodiment of this application.
  • FIG. 38 is a schematic structural diagram of a terminal device in an embodiment of this application.
  • This application provides a method and terminal equipment for transmitting synchronization signals, so that the terminal equipment can accurately determine the symbol position of the S-PSS.
  • FIG. 1 is a schematic diagram of the Internet of Vehicles scene.
  • the scene shown in FIG. 1 includes a first terminal device 100 and a second terminal device 200.
  • the first terminal device 100 and the second terminal device 200 communicate through a D2D communication protocol, for example, a communication protocol based on V2X.
  • the terminal equipment in this application may also refer to user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, user terminal equipment, terminal Equipment, wireless communication equipment, user agent or user device.
  • the access terminal device can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), Handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in the future 5G network or future evolution of public land mobile network (PLMN) Terminal equipment in the network, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be implemented without relying on smartphones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • a synchronization signal block is a signal structure defined in a new radio (NR) network.
  • a synchronization signal block consists of a primary synchronization signal (PSS) of an orthogonal frequency division multiplexing (OFDM) symbol, and a secondary synchronization signal (PSS) of a symbol. SSS), and two symbols of physical broadcast channel (physical broadcast channel, PBCH).
  • PSS primary synchronization signal
  • PBCH physical broadcast channel
  • symbols and subcarriers respectively represent the granular units of the time-frequency resources of the transmission signal in the time domain and the frequency domain. They can have meanings in the current communication system or in the future communication system. Meaning. In addition, if their names are changed in the future communication system, they can also be converted to the names in the future communication system.
  • the first terminal device sends a sidelink synchronization signal block (S-SSB) to the second terminal device to complete time synchronization.
  • the sidelink synchronization signal block can be used for reference.
  • the design idea of NR is to encapsulate the sidelink primary synchronization signal (S-PSS), sidelink secondary synchronization signal (S-SSS) and PBCH in one S-SSB .
  • S-PSS sidelink primary synchronization signal
  • S-SSS sidelink secondary synchronization signal
  • a side link synchronization signal block consists of two orthogonal frequency division multiplexing (OFDM) symbols of S-PSS, two symbols of S-SSS, and two symbols of S-SSS.
  • S-SSB occupies 6 symbols, of which two repeated S-PSS sequences are placed in the first and second symbol positions, PBCH is placed in the third and fourth symbol positions, and the fifth and sixth symbol positions are placed Two repeated S-SSS sequences.
  • the S-PSS and S-SSS in some embodiments may have the functions of the PSS and SSS in the prior art, respectively.
  • S-PSS is used to determine OFDM symbol timing, frequency synchronization, time slot timing, and cell ID in a cell group;
  • S-SSS can be used to determine frame timing, cell group, etc., or S-PSS can also be
  • the different functions of the PSS and SSS are not limited in this embodiment of the application.
  • S-PSS and S-SSS may also use the same or different sequences as the current PSS and SSS, which is not limited in the embodiment of the present application.
  • the PBCH may have the same or different functions as the PBCH in the prior art, and the comparison in this application is not limited.
  • the second terminal device may have ambiguity in determining the position of the S-PSS symbol. For example, when the second terminal device detects only 1 S-PSS in the S-SSB, the S-SSS may be detected at 3 symbol positions after the S-PSS.
  • the S-SSS is detected at two adjacent symbol positions at the position. If S-SSS is detected at a symbol position behind the position, the detected S-PSS is the S-PSS at the first symbol position; if S-SSS is detected at a symbol position before the position, it is detected The S-PSS is the S-PSS at the second symbol position; if the S-SSS is not detected in the previous symbol and the next symbol position in the position, the second terminal device fails to synchronize (because both S-SSS are Cause not detected).
  • the S-SSS is detected at two adjacent symbol positions at the position. If S-SSS is detected at a symbol position behind the position, the detected S-PSS is the S-PSS at the first symbol position; if S-SSS is detected at a symbol position before the position, it is detected The S-PSS is the S-PSS of the second symbol position; if the S-SSS is not detected in the previous symbol and the next symbol position in this position, it is equivalent to the second network device only detecting the S-SSB in the S-SSB One S-PSS and one S-SSS, and the symbol position interval between the detected S-PSS and the detected S-SSS is 3.
  • the second terminal device may detect the S-PSS at the first symbol position and the S-SSS at the fifth symbol position, and may also detect the second symbol position The S-PSS of the S-PSS and the S-SSS of the sixth symbol position, therefore, the second terminal device cannot accurately determine the symbol position of the S-PSS.
  • an embodiment of the present application provides a method for transmitting a synchronization signal.
  • FIG. 4 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of the application. This schematic diagram describes the process of transmitting synchronization signals from the perspective of the interaction between the first terminal device and the second terminal device.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • the first terminal device generates a synchronization signal block, where the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval Set, one symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M symbol intervals Any two symbol interval sets in the set do not include the same symbol interval, and the M and N are positive integers greater than or equal to 2.
  • the values of M and N may be the same or different, which is not limited in this application.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • N secondary synchronization signals are mapped to N symbols of the synchronization signal block.
  • the M primary synchronization signals correspond to M symbol interval sets, each of the M primary synchronization signals corresponds to one symbol interval set in the M symbol interval sets, and the M symbol interval sets A set of symbol intervals in includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals.
  • the same symbol interval is not contained between any two symbol interval sets in the M symbol interval sets.
  • the intersection of is an empty set.
  • the symbol intervals contained between any two symbol interval sets in the M symbol interval sets are not repeated.
  • the synchronization signal block includes two primary synchronization signals (primary synchronization signal A and primary synchronization signal B)
  • the synchronization signal block includes two secondary synchronization signals (secondary synchronization signal A and secondary synchronization signal B).
  • the two primary synchronization signals correspond to two symbol interval sets (symbol interval set A and symbol interval set B), and each of the two primary synchronization signals corresponds to one of the two symbol interval sets.
  • a set of symbol intervals, the primary synchronization signal A corresponds to the symbol interval set A, and the primary synchronization signal B corresponds to the symbol interval set B.
  • Each symbol interval set includes 2 symbol intervals between a primary synchronization signal and the 2 secondary synchronization signals, that is, the symbol interval set A includes 2 symbol intervals (the symbol interval A1 between the primary synchronization signal A and the secondary synchronization signal A) , The symbol interval A2 between the primary synchronization signal A and the secondary synchronization signal B), the symbol interval set B includes 2 symbol intervals (the symbol interval B1 between the primary synchronization signal B and the secondary synchronization signal A, the primary synchronization signal B and the secondary synchronization signal B Symbol interval B2).
  • the symbol interval set A and the symbol interval set B do not contain the same symbol interval, that is, the symbol interval A1 is not equal to the symbol interval B1, and the symbol interval A1 is not equal to the symbol interval B2, and the symbol interval A2 is not equal to the symbol interval B1, and the symbol The interval A2 is not equal to the symbol interval B2.
  • the synchronization signal block can also include PBCH.
  • FIGS. 5a to 9d are schematic diagrams of the structure of the synchronization signal block.
  • the two primary synchronization signals S-PSS are mapped on consecutive symbols.
  • S-SSB in Fig. 5a -In SSB S-PSS is mapped to the first symbol position and the second symbol position
  • S-SSS is mapped to the third symbol position and the fifth symbol position.
  • the S-PSS at the first symbol position corresponds to The symbol interval set of is ⁇ 1,3 ⁇
  • the corresponding symbol interval set on the S-PSS at the second symbol position is ⁇ 0,2 ⁇ , that is, the symbol interval set corresponding to the S-PSS at the first symbol position and
  • the set of corresponding symbol intervals on the S-PSS at the second symbol position does not include the same symbol interval.
  • the second symbol position and the third symbol position are mapped with S-PSS
  • the first symbol position and the fifth symbol position are mapped with S-SSS.
  • the symbol interval set corresponding to the S-PSS at the second symbol position is ⁇ 0,2 ⁇
  • the symbol interval set corresponding to the S-PSS at the third symbol position is ⁇ 1,1 ⁇ .
  • the first symbol The symbol interval set corresponding to the S-PSS at the position and the symbol interval set corresponding to the S-PSS at the second symbol position do not include the same symbol interval.
  • any two symbol interval sets in the M symbol interval sets do not include the same symbol interval, and one symbol interval set may include the same symbol interval.
  • the symbol interval between the two primary synchronization signals S-PSS is 1.
  • the symbol interval in Fig. 6a In S-SSB, the first symbol position and the third symbol position are mapped with S-PSS, and the fourth symbol position and the fifth symbol position are mapped with S-SSS.
  • the S-PSS at the first symbol position is mapped
  • the corresponding symbol interval set is ⁇ 2, 3 ⁇
  • the corresponding symbol interval set on the S-PSS at the third symbol position is ⁇ 0, 1 ⁇ , that is, the corresponding symbol interval set on the S-PSS at the first symbol position
  • the set of symbol intervals corresponding to the S-PSS at the third symbol position does not include the same symbol interval.
  • the symbol interval between the two primary synchronization signals S-PSS is 2.
  • the symbol interval in Fig. 7a In S-SSB the first symbol position and the fourth symbol position are mapped with S-PSS, and the fifth symbol position and the sixth symbol position are mapped with S-SSS.
  • the S-PSS at the first symbol position is mapped
  • the corresponding symbol interval set is ⁇ 3, 4 ⁇
  • the corresponding symbol interval set on the S-PSS at the fourth symbol position is ⁇ 0, 1 ⁇ , that is, the corresponding symbol interval set on the S-PSS at the first symbol position
  • the symbol interval set corresponding to the S-PSS at the fourth symbol position does not include the same symbol interval.
  • the symbol interval between the two main synchronization signals S-PSS is 3, taking Fig. 8a as an example, the symbol interval in Fig. 8a
  • the first symbol position and the fifth symbol position are mapped with S-PSS
  • the second symbol position and the third symbol position are mapped with S-SSS.
  • the S-PSS at the first symbol position is mapped
  • the corresponding symbol interval set is ⁇ 0, 1 ⁇
  • the corresponding symbol interval set on the S-PSS at the fifth symbol position is ⁇ 2, 1 ⁇ , that is, the corresponding symbol interval set on the S-PSS at the first symbol position
  • the symbol interval set corresponding to the S-PSS at the fifth symbol position does not include the same symbol interval.
  • the symbol interval between the two primary synchronization signals S-PSS is 4, taking Fig. 9a as an example.
  • S-SSB the first symbol position and the sixth symbol position are mapped with S-PSS, and the second symbol position and the third symbol position are mapped with S-SSS.
  • the S-PSS at the first symbol position is mapped
  • the corresponding symbol interval set is ⁇ 0, 1 ⁇
  • the corresponding symbol interval set on the S-PSS at the sixth symbol position is ⁇ 3, 2 ⁇ , that is, the corresponding symbol interval set on the S-PSS at the first symbol position
  • the set of symbol intervals corresponding to the S-PSS at the sixth symbol position does not include the same symbol interval.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the symbol positions occupied by the M primary synchronization signals are before the symbol positions occupied by the N secondary synchronization signals.
  • the synchronization signal block The symbol positions of the M primary synchronization signals mapped in the time domain are higher than the N secondary synchronization signals.
  • the second terminal device Since the second terminal device needs to perform sliding window detection on the synchronization signal in the received synchronization signal block in the order of the time domain, and needs to detect the primary synchronization signal in the synchronization signal block before detecting the auxiliary synchronization signal in the synchronization signal block.
  • Synchronization signal if the symbols occupied by the M primary synchronization signals are after the symbols occupied by the N secondary synchronization signals, at this time, even if the second terminal device first receives N secondary synchronization signals, it cannot detect the N secondary synchronization signals.
  • Synchronous signal but need to buffer the data of N auxiliary synchronization signals, after detecting M main synchronization signals, then detect N auxiliary synchronization signals.
  • the second terminal device may first receive the M primary synchronization signals in the synchronization signal block, and detect M After detecting the M primary synchronization signals, the N secondary synchronization signals in the synchronization signal block are detected again without buffering additional data and reducing the buffering overhead of the second terminal device.
  • the symbols occupied by the two primary synchronization signals in the synchronization signal block are before the symbols occupied by the two secondary synchronization signals.
  • the second symbol position and the third symbol position are mapped with S-PSS
  • the first symbol position and the sixth symbol position are mapped with S-SSS
  • the first symbol position and the sixth symbol position are mapped with S-SSS.
  • the S-SSS mapped at the symbol position is before the S-PSS mapped at the second symbol position and the S-PSS mapped at the third symbol position.
  • the second terminal device may first receive the S-SSS mapped at the first symbol position, but does not detect the S-SSS mapped at the first symbol position, but first buffers the S-SSS mapped at the first symbol position Corresponding data, then the second terminal device can receive the S-PSS mapped at the second symbol position and the S-PSS mapped at the third symbol position, and detect the S-PSS mapped at the second symbol position and the third symbol For the S-PSS mapped at the location, in the synchronization signal block shown in FIG. 5e, the second terminal device needs to buffer additional data (data corresponding to the S-SSS mapped at the first symbol location).
  • the first symbol position and the second symbol position are mapped with S-PSS, and the third symbol position and the fifth symbol position are mapped with S-SSS, that is, S- in Figure 5a.
  • the symbols occupied by the 2 primary synchronization signals in the SSB are before the symbols occupied by the 2 secondary synchronization signals.
  • the second terminal device can first receive the two main synchronization signals in the synchronization signal block, and detect these two main synchronization signals, and then detect two of the synchronization signal blocks after detecting the two main synchronization signals.
  • the auxiliary synchronization signal does not need to buffer additional data, which reduces the buffering overhead of the second terminal device.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIGS. 5a to 9d occupies 6 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M primary synchronization signals.
  • the second terminal device determines the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal The symbol position of each primary synchronization signal in.
  • the second terminal device blindly detects the primary synchronization signal and the secondary synchronization signal in the synchronization signal block. It should be noted that the number of primary synchronization signals detected by the second terminal device may be equal to or less than M, and the number of secondary synchronization signals detected by the second terminal device may be equal to or less than N.
  • the second terminal device determines the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal.
  • the symbol position of each main synchronization signal in the main synchronization signal includes:
  • the second terminal device determines the value of the primary synchronization signal corresponding to the symbol interval set to which the symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal belongs.
  • the symbol position is the symbol position of the one primary synchronization signal, wherein the symbol interval set belongs to the M symbol interval sets.
  • each symbol interval set of the M symbol interval sets includes the M primary synchronization signals N symbol intervals between one primary synchronization signal and the N secondary synchronization signals, and any two symbol interval sets in the M symbol interval sets do not contain the same symbol interval, then each symbol interval corresponds to A unique set of symbol intervals, and the set of symbol intervals corresponds to a unique primary synchronization signal, and the second terminal device can determine whether each primary synchronization signal in the detected at least one primary synchronization signal and the detected at least one secondary synchronization signal The symbol interval between one of the secondary synchronization signals in the at least one primary synchronization signal determines which primary synchronization signal in the synchronization signal block is each primary synchronization signal in the at least one primary synchronization signal.
  • the second terminal device can pre-store the synchronization signal block Correspondence between M primary synchronization signals and M symbol positions, the second terminal device can determine the symbol position of each primary synchronization signal in at least one primary synchronization signal according to the M primary synchronization signals and M symbol positions.
  • M is equal to 2 and N is equal to 2 as an example to describe this embodiment.
  • the second terminal device detects a primary synchronization signal and a primary synchronization signal in the synchronization signal block, detects the symbol interval between the primary synchronization signal and the primary synchronization signal, because Synchronization signal block
  • Each of the two primary synchronization signals corresponds to a symbol interval set, and one of the two symbol interval sets includes one of the two primary synchronization signals and the Two symbol intervals between two secondary synchronization signals, and any two symbol interval sets in the two symbol interval sets do not contain the same symbol interval, each symbol interval corresponds to a unique symbol interval set, and the symbol The interval set corresponds to a unique primary synchronization signal
  • the second terminal device can determine which of the synchronization signal blocks the primary synchronization signal is according to the symbol interval between the detected primary synchronization signal and the detected secondary synchronization signal
  • the primary synchronization signal because the second terminal device can pre-store the correspondence between the 2 primary synchronization signals and the 2 symbol positions in the synchronization signal block, that is, the second
  • the second terminal device detects 1 primary synchronization signal and 2 secondary synchronization signals in the synchronization signal block, it can be based on the detected primary synchronization signal and the symbol of one secondary synchronization signal in the detected 2 secondary synchronization signals The interval determines the symbol position of the main synchronization signal.
  • the second terminal device detects two primary synchronization signals and two secondary synchronization signals in the synchronization signal block, it can be based on one of the two primary synchronization signals and one of the detected two secondary synchronization signals.
  • the symbol interval of the secondary synchronization signal determines the symbol position of a primary synchronization signal.
  • the second terminal can detect the other secondary synchronization signal according to the other primary synchronization signal of the 2 primary synchronization signals and the other secondary synchronization signal detected.
  • the symbol interval of the signal determines the symbol position of another primary synchronization signal.
  • the second terminal device detects one S-PSS and one S-SSS, if the second terminal device detects the symbol interval between the S-PSS and the S-SSS Since the synchronization signal block in Fig. 5a has only the symbol interval between the S-PSS at the first symbol position and the S-SSS at the third symbol position is 1, the second terminal device can determine the detected S -PSS is the S-PSS of the first symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 0, because the synchronization signal block in Figure 5a only has the S-PSS at the second symbol position and the S-SSS at the third symbol position. If the symbol interval is 0, the second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 2, because the synchronization signal block in FIG. 5a only has the S-PSS at the second symbol position and the S-SSS at the fifth symbol position. If the symbol interval between the two is 2, the second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 3, because the synchronization signal block in FIG. 5a only has one of the S-PSS at the first symbol position and the S-SSS at the fifth symbol position If the symbol interval is 3, the second terminal device can determine that the detected S-PSS is the S-PSS at the first symbol position.
  • the second terminal device detects one S-PSS and one S-SSS, if the second terminal device detects that the symbol interval between the S-PSS and S-SSS is 0, Since only the S-PSS at the second symbol position and the S-SSS at the first symbol position in the synchronization signal block in Fig. 5d have a symbol interval of 0, the second terminal device can determine that the detected S-PSS is S-PSS at the second symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 1, because the synchronization signal block in FIG. 5d only has the S-PSS at the third symbol position and the S-SSS at the first symbol position. If the symbol interval between the S-PSS at the third symbol position and the S-SSS at the fifth symbol position is 1, the second terminal device can determine that the detected S-PSS is the third S-PSS of symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 2, because the synchronization signal block in FIG. 5d only has the S-PSS at the second symbol position and the S-SSS at the fifth symbol position. If the symbol interval between the two is 2, the second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device can separately After S-PSS, the symbol interval is 0, the symbol interval is 1, the symbol interval is 2 and the symbol interval is 3, and the S-SSS is detected. If the S-SSS is detected at the symbol position after the S-PSS, the symbol interval is 0 , The second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device may determine that the detected S-PSS is the S-PSS at the first symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 2 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 3 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the first symbol position.
  • the second network device can be The S-PSS before the symbol interval is 0, the previous symbol interval is 1, the following symbol interval is 1 and the following symbol interval is 2 to detect the S-SSS, if the symbol position before the S-PSS is 0 When the S-SSS is reached, the second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 1 before the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the third symbol position.
  • the second terminal device may determine that the detected S-PSS is the S-PSS at the third symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 2 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each of the M primary synchronization signals Corresponding to a set of symbol intervals, a set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and Any two symbol interval sets in the M symbol interval sets do not include the same symbol interval, and the M and N are positive integers greater than or equal to 2; the first terminal device sends the synchronization signal block; Two terminal devices detect the primary synchronization signal and the secondary synchronization signal, where the primary synchronization signal and the secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals , Each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval set in the M symbol interval sets includes one
  • the symbol position of the main synchronization signal when the terminal device detects only one S-PSS and one S-SSS, since the symbol interval set corresponding to each primary synchronization signal does not contain the same number of symbol intervals, the terminal device can detect The number of symbol intervals between S-PSS and S-SSS accurately determines the symbol position of S-PSS.
  • FIG. 10 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of this application.
  • the method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • a first terminal device generates a synchronization signal block, where the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1, and among the M primary synchronization signals The symbol interval of any two primary synchronization signals is different from the one secondary synchronization signal.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • M primary synchronization signals correspond to M symbol positions
  • 1 secondary synchronization signal is mapped to 1 symbol of the synchronization signal block.
  • the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1.
  • M is a positive integer greater than 1.
  • there are M symbol intervals between M primary synchronization signals and one secondary synchronization signal that is, there is 1 symbol between each secondary synchronization signal in the M primary synchronization signals and one secondary synchronization signal. Since the symbol intervals of any two primary synchronization signals in the M primary synchronization signals and one secondary synchronization signal are different, the M symbol intervals between the M primary synchronization signals and one secondary synchronization signal are both Not the same.
  • FIGS. 11a to 15f are schematic diagrams of the structure of the synchronization signal block.
  • one secondary synchronization signal S-PSS is mapped on the first symbol position of the synchronization signal block.
  • S-SSS is mapped to the first symbol position
  • S-PSS is mapped to the second symbol position and the third symbol position.
  • one secondary synchronization signal S-SSS is mapped on the second symbol position of the synchronization signal block.
  • S-SSS is mapped at the second symbol position
  • S-PSS is mapped at the third symbol position and the fourth symbol position.
  • the symbol occupied by the M primary synchronization signals is before the symbol occupied by the 1 secondary synchronization signal.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIGS. 11a to 15f occupies 5 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal and one secondary synchronization signal, where the at least one primary synchronization signal and the one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block only includes M There are two primary synchronization signals and one secondary synchronization signal, where M is a positive integer greater than 1, and any two primary synchronization signals in the M primary synchronization signals have different symbol intervals from the one secondary synchronization signal.
  • the second terminal device determines the value of each primary synchronization signal in the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and the one secondary synchronization signal. Symbol position.
  • the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1. In some embodiments, there are M symbol intervals between M primary synchronization signals and one secondary synchronization signal, that is, there is 1 symbol between each secondary synchronization signal in the M primary synchronization signals and one secondary synchronization signal.
  • the M symbol intervals between the M primary synchronization signals and one secondary synchronization signal are both If they are not the same, each symbol interval corresponds to a unique primary synchronization signal, and the second terminal device can be based on the symbol interval between each primary synchronization signal in the detected at least one primary synchronization signal and the detected one secondary synchronization signal.
  • the second terminal device may determine the symbol position of each primary synchronization signal in at least one primary synchronization signal according to the M primary synchronization signals and M symbol positions.
  • the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1.
  • the second terminal device blindly detects the primary synchronization signal and the secondary synchronization signal in the synchronization signal block.
  • the second terminal device if the second terminal device does not detect the two primary synchronization signals in the synchronization signal block, the second terminal device fails the detection.
  • the second terminal device detects one primary synchronization signal and one secondary synchronization signal in the synchronization signal block.
  • the 2 symbol intervals of the two primary synchronization signals and one secondary synchronization signal in the synchronization signal block are different, and each symbol interval corresponds to a unique primary synchronization signal, and the second terminal device can be based on the primary synchronization signal.
  • the symbol interval between the signal and the secondary synchronization signal determines which primary synchronization signal in the synchronization signal block the detected primary synchronization signal is. Because the second terminal device can pre-store M primary synchronization signals and M primary synchronization signals in the synchronization signal block. According to the corresponding relationship of the symbol positions, the second terminal device can determine the symbol position of the detected primary synchronization signal according to the M primary synchronization signals and the M symbol positions.
  • the second terminal device detects one S-PSS and one S-SSS, if the second terminal device detects the symbol interval between the S-PSS and S-SSS Since the synchronization signal block in Figure 11a has only the symbol interval between the S-SSS at the first symbol position and the S-PSS at the third symbol position is 1, the second terminal device can determine the detected S -PSS is the S-PSS of the third symbol position. If the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 0, because the synchronization signal block in FIG. 11a only has the S-SSS at the second symbol position and the S-PSS at the third symbol position. If the symbol interval between is 1, the second terminal device can determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device if the second terminal device detects only one S-PSS and one S-SSS in the synchronization signal block, the second network device The S-SSS can be detected at the symbol position where the symbol interval is 0 before the S-PSS and the symbol interval is 1 respectively. If the S-SSS is detected at the symbol position where the symbol interval is 0 before the S-PSS, the second terminal device It can be determined that the detected S-PSS is the S-PSS at the third symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 1 before the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device detects two primary synchronization signals and one secondary synchronization signal in the synchronization signal block, it can be determined according to the symbol interval between the secondary synchronization signal and one of the detected two primary synchronization signals The symbol position of a primary synchronization signal.
  • the second terminal device may also determine the symbol position of the primary synchronization signal according to the time domain sequence between the detected two primary synchronization signals, for example, if the second terminal device detects the primary synchronization signal at the first symbol position And the main synchronization signal at the second symbol position, the second terminal device can detect the sequence of the two main synchronization signals in the time domain (the main synchronization signal at the first symbol position is Before), and according to the sequence in the time domain, it is determined that the first main synchronization signal in the time domain of the two detected main synchronization signals is the main synchronization signal at the first symbol position, and the main synchronization signal at the back in the time domain is the second The main synchronization signal of the symbol position.
  • the first terminal device generates a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, the M is a positive integer greater than 1, and the M The symbol interval of any two primary synchronization signals in the primary synchronization signal is different from the one secondary synchronization signal;
  • the first terminal device sends the synchronization signal block;
  • the second terminal device detects at least one primary synchronization signal and one A secondary synchronization signal, wherein the at least one primary synchronization signal and the one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, where M is A positive integer greater than 1, and the symbol interval of any two primary synchronization signals in the M primary synchronization signals is different from the symbol interval of the 1 secondary synchronization signal;
  • the second terminal device is based on the at least one primary synchronization signal The symbol interval between each primary synchronization signal and the one secondary synchronization signal determines
  • the terminal device when the terminal device detects only one S-PSS and one S-SSS, since the symbol interval set corresponding to each primary synchronization signal does not contain the same symbol interval, the terminal device can detect S-PSS -The symbol interval between PSS and S-SSS accurately determines the symbol position of S-PSS.
  • FIG. 21 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of this application.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • the first terminal device generates a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, the value of M is 1 and N is a positive integer greater than 1,
  • the M primary synchronization signals correspond to M symbol positions.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes only 1 primary synchronization signal and N secondary synchronization signals.
  • 1 primary synchronization signal is mapped to 1 symbol of the synchronization signal block.
  • one primary synchronization signal corresponds to one symbol position, and N secondary synchronization signals are mapped to N symbols of the synchronization signal block.
  • FIG. 16a to FIG. 20f are schematic diagrams of the structure of the synchronization signal block.
  • the symbol occupied by the 1 primary synchronization signal is before the symbol occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIGS. 16a to 20f occupies 5 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects a primary synchronization signal, where the primary synchronization signal belongs to a synchronization signal block, and the synchronization signal block only includes M primary synchronization signals and N secondary synchronization signals, and the value of M Is 1 and the N is a positive integer greater than 1, and the M primary synchronization signals correspond to M symbol positions.
  • the second terminal device determines the symbol position of the one primary synchronization signal according to the correspondence between the M primary synchronization signals and the M symbol positions.
  • the second terminal device if the second terminal device does not detect one primary synchronization signal in the synchronization signal block, the second terminal device fails the detection.
  • the second terminal device may directly determine the symbol position of the detected primary synchronization signal according to the corresponding relationship between the one primary synchronization signal and one symbol position.
  • the first terminal device generates a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, the value of M is 1 and the value of N is greater than 1.
  • a positive integer the M primary synchronization signals correspond to M symbol positions; the first terminal device sends the synchronization signal block; the second terminal device detects a primary synchronization signal, wherein the one primary synchronization signal belongs to A synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, the value of M is 1 and N is a positive integer greater than 1, the M primary synchronization signals and M Corresponding to each symbol position; the second terminal device determines the symbol position of the one primary synchronization signal according to the correspondence between the M primary synchronization signals and the M symbol positions.
  • the terminal device when the terminal device detects only one S-PSS and one S-SSS, since the main synchronization signal block contains only one S-PSS, the terminal device can detect the corresponding S-PSS and the symbol position. The relationship accurately determines the symbol position of the S-PSS.
  • FIG. 22 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of this application.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • the first terminal device generates a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval Set, one symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the N secondary synchronization signals
  • the sequences of any two secondary synchronization signals in the signal are different, the N sequences of the N secondary synchronization signals correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • N secondary synchronization signals are mapped to N symbols of the synchronization signal block.
  • the M primary synchronization signals correspond to M symbol interval sets, each of the M primary synchronization signals corresponds to one symbol interval set in the M symbol interval sets, and the M symbol interval sets A set of symbol intervals in includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals.
  • the same symbol interval is included between at least two symbol interval sets in the M symbol interval sets.
  • one of the at least two symbol interval sets in the M symbol interval sets The intersection set between is not an empty set.
  • at least two symbol interval sets in the M symbol interval sets include repeated symbol intervals.
  • the synchronization signal block includes two primary synchronization signals (primary synchronization signal A and primary synchronization signal B), and the synchronization signal block includes two secondary synchronization signals (secondary synchronization signal A and secondary synchronization signal B).
  • the two primary synchronization signals correspond to two symbol interval sets (symbol interval set A and symbol interval set B), and each of the two primary synchronization signals corresponds to one of the two symbol interval sets.
  • a set of symbol intervals, the primary synchronization signal A corresponds to the symbol interval set A, and the primary synchronization signal B corresponds to the symbol interval set B.
  • Each symbol interval set includes 2 symbol intervals between a primary synchronization signal and the 2 secondary synchronization signals, that is, the symbol interval set A includes 2 symbol intervals (the symbol interval A1 between the primary synchronization signal A and the secondary synchronization signal A) , The symbol interval A2 between the primary synchronization signal A and the secondary synchronization signal B), the symbol interval set B includes 2 symbol intervals (the symbol interval B1 between the primary synchronization signal B and the secondary synchronization signal A, the primary synchronization signal B and the secondary synchronization signal B Symbol interval B2).
  • the symbol interval set A and the symbol interval set B contain the same symbol interval, that is, the symbol interval A1 is equal to the symbol interval B1, or the symbol interval A1 is equal to the symbol interval B2, or the symbol interval A2 is equal to the symbol interval B1, or the symbol interval A2 is equal to Symbol interval B2.
  • FIGS. 23a to 26b are schematic diagrams of the structure of the synchronization signal block.
  • the S-PSS at the first symbol position corresponds to The symbol interval set of is ⁇ 3, 4 ⁇
  • the corresponding symbol interval set on the S-PSS at the second symbol position is ⁇ 2, 3 ⁇ , that is, the symbol interval set corresponding to the S-PSS at the first symbol position is
  • the set of corresponding symbol intervals on the S-PSS at the second symbol position contains the same symbol interval (3), that is, the symbols between the S-PSS at the first symbol position and the S-SSS at the fourth symbol position
  • the interval is equal to the symbol interval between the S-PSS at the second symbol position and the S-SSS at the fifth symbol position.
  • S-PSS is mapped to the first symbol position and the third symbol position
  • S-SSS is mapped to the second symbol position and the fourth symbol position.
  • the set of corresponding symbol intervals on the S-PSS at the first symbol position is ⁇ 0, 2 ⁇
  • the set of corresponding symbol intervals on the S-PSS at the third symbol position is ⁇ 0, 0 ⁇ , at this time the first symbol
  • the symbol interval set corresponding to the S-PSS at the position and the symbol interval set corresponding to the S-PSS at the second symbol position include the same symbol interval (0).
  • any two symbol interval sets in the M symbol interval sets include the same symbol interval, and one symbol interval set may also include the same symbol interval.
  • the symbol interval between the two primary synchronization signals S-PSS is 2, taking Figure 25a as an example.
  • the first symbol position and the fourth symbol position are mapped with S-PSS
  • the second symbol position and the fifth symbol position are mapped with S-SSS.
  • the corresponding symbol interval set is ⁇ 0, 2 ⁇
  • the corresponding symbol interval set on the S-PSS at the fourth symbol position is ⁇ 0, 1 ⁇ , that is, the corresponding symbol interval set on the S-PSS at the first symbol position
  • the set of symbol intervals corresponding to the S-PSS at the fourth symbol position includes the same symbol interval (0).
  • At least two symbol interval sets in the M symbol interval sets do not include the same symbol interval between them.
  • at least two symbols in the M symbol interval sets The intersection between the interval sets is an empty set.
  • at least two symbol interval sets in the M symbol interval sets do not include repeated symbol intervals.
  • the sequences of any two auxiliary synchronization signals in the N auxiliary synchronization signals are different.
  • the secondary synchronization signal S-SSS sequence c(n) is a gold sequence, and its construction is based on the addition of two M sequences with cyclic shifts i 1 and i 2 respectively.
  • i 1 and i 2 can be generated using the following generating formula:
  • the S-SSS sequence c(n) can be generated using the following generating formula:
  • x 0 (n) and x 1 (n) are M sequences
  • SID 3*NID1+NID2
  • SID is the side link synchronization identifier
  • SID (0,...1007).
  • two different S-SSS sequences can be generated using the following formula:
  • c 1 (n) mod((x 0 (n+i 1 )+x 1 (n+i 2 )), 2);
  • linear feedback shift register generator polynomial used to generate two M sequences x 0 (n) and x 1 (n) is the same as the formula for NR to generate SSS:
  • x 0 (i+7) mod((x 0 (i+4)+x 0 (i)),2);
  • x 1 (i+7) mod((x 1 (i+1)+x 1 (i)),2);
  • the initial value of the generator polynomial can be the following initial value:
  • the synchronization signal block can also include PBCH.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIG. 23a to FIG. 26b occupies 6 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M primary synchronization signals.
  • the N sequences of the corresponding to the N symbol positions, and the M and N are positive integers greater than or equal to 2.
  • the second terminal device determines the at least one sequence according to the sequence of the secondary synchronization signal in the at least one secondary synchronization signal and the correspondence between the N sequences of the N secondary synchronization signals and the N preset symbol positions.
  • the second terminal device according to the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and the secondary synchronization signal in the at least one secondary synchronization signal and each primary synchronization signal in the at least one primary synchronization signal.
  • the symbol interval between synchronization signals determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • the second terminal device blindly detects the primary synchronization signal and the secondary synchronization signal in the synchronization signal block. It should be noted that the number of primary synchronization signals detected by the second terminal device may be equal to or less than M, and the number of secondary synchronization signals detected by the second terminal device may be equal to or less than N.
  • the second terminal device determines at least the sequence of the secondary synchronization signal in the at least one secondary synchronization signal and the correspondence between the N sequences of the N secondary synchronization signals and the N preset symbol positions The symbol position of the sequence of the secondary synchronization signal in one secondary synchronization signal; the second terminal equipment according to the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and the secondary synchronization signal in the at least one secondary synchronization signal The symbol interval with each primary synchronization signal in the at least one primary synchronization signal determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • the second terminal device may be based on the sequence of the secondary synchronization signal in the at least one secondary synchronization signal, the N sequences of the N secondary synchronization signals and the N preset symbol positions.
  • the correspondence relationship determines the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal.
  • the second terminal equipment Since the M symbol intervals between each secondary synchronization signal and the M primary synchronization signals are different, the second terminal equipment The symbol position of the secondary synchronization signal in the secondary synchronization signal and the symbol interval between the one secondary synchronization signal and the one primary synchronization signal in the at least one primary synchronization signal determine the symbol position of the one primary synchronization signal.
  • M is equal to 2 and N is equal to 2 as an example to describe this embodiment.
  • the second terminal device blindly detects the primary synchronization signal and the secondary synchronization signal in the synchronization signal block.
  • the second terminal device if the second terminal device does not detect the two primary synchronization signals in the synchronization signal block, the second terminal device fails the detection.
  • the second terminal device detects only one primary synchronization signal and one secondary synchronization signal in the synchronization signal block, detects the sequence of the detected secondary synchronization signal, and determines the detection according to the sequence of the secondary synchronization signal The symbol position of the received secondary synchronization signal.
  • the second terminal device detects the symbol interval between the detected secondary synchronization signal and the detected primary synchronization signal, and determines the detected primary synchronization signal according to the symbol interval between the detected secondary synchronization signal and the detected primary synchronization signal Symbol position.
  • the second terminal device detects one S-PSS and one S-SSS, and the second terminal device detects that the sequence of the S-SSS is the sequence of S-SSS1, then The second terminal device can determine that the detected S-SSS is S-SSS1 at the fifth symbol position. If the second terminal device detects that the symbol interval between S-PSS and S-SSS1 is 3, because the synchronization signal in Figure 23a In the block, only the symbol interval between the S-PSS at the first symbol position and the S-SSS1 at the fifth symbol position is 3, and the second terminal device can determine that the detected S-PSS is the S-PSS at the first symbol position. PSS.
  • the second network device can be S-SSS is detected at the symbol position with the symbol interval of 2, the symbol interval of 3, and the symbol interval of 4 after the S-PSS. If the S-SSS is detected at the symbol position with the symbol interval of 2 after the S-PSS, the second The terminal device can determine that the detected S-PSS is the S-PSS of the first symbol position.
  • the second terminal device may determine that the detected S-PSS is the S-PSS at the first symbol position. If a sequence of S-SSS2 is detected at a symbol position with a symbol interval of 3 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 4 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the first symbol position.
  • the second terminal device detects one S-PSS and one S-SSS, if the second terminal device detects the S-PSS and The symbol interval between S-SSS is 3, the symbol interval between the S-PSS at the first symbol position and the S-SSS at the fifth symbol position in the synchronization signal block in FIG. 23a is 3, and the symbol interval between the second symbol position
  • the second terminal device can detect the sequence of S-SSS, and if the second terminal device detects the sequence of S-SSS1, it can determine that The detected S-PSS is the S-PSS at the first symbol position. If the second terminal device detects the S-SSS2 sequence, it can be determined that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device can detect The symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the detected at least one secondary synchronization signal, determining that one primary synchronization signal in the at least one primary synchronization signal is in the synchronization signal block Which primary synchronization signal is, because the second terminal device can pre-store the corresponding relationship between the M primary synchronization signals and the M symbol positions in the synchronization signal block, the
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals
  • each primary synchronization signal of the M primary synchronization signals corresponds to A set of symbol intervals
  • one set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals
  • the N The sequences of any two auxiliary synchronization signals in the two auxiliary synchronization signals are different, and the N sequences of the N auxiliary synchronization signals correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2
  • a terminal device sends the synchronization signal block
  • a second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, wherein the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal Block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization
  • the sequence of the synchronization signal and the correspondence between the N sequences of the N auxiliary synchronization signals and the N preset symbol positions determine the symbol position of the auxiliary synchronization signal in the at least one auxiliary synchronization signal; the second terminal device is based on The symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and the symbol interval between the secondary synchronization signal in the at least one secondary synchronization signal and each primary synchronization signal in the at least one primary synchronization signal are determined by The symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • the terminal device since the sequence of any two secondary synchronization signals in the N secondary synchronization signals is different, in the case that the terminal device detects only one S-PSS and one S-SSS, even if the symbol interval corresponding to each primary synchronization signal is The sets contain the same symbol interval, and the terminal device can also accurately determine the symbol position of the S-PSS according to the sequence and symbol interval of the secondary synchronization signal.
  • FIG. 27 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of the present application.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • the first terminal device generates a synchronization signal block, where the synchronization signal block includes M primary synchronization signals, where any two primary synchronization signals in the M primary synchronization signals have different sequences, and the M primary synchronization signals
  • the M sequences of M correspond to M symbol positions, and the M is a positive integer greater than or equal to 2.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • the sequences of any two primary synchronization signals are different, that is, the M sequences of the M primary synchronization signals correspond to the M symbol positions, and the N secondary synchronization signals are mapped to N of the synchronization signal block. Symbols.
  • the sequences of any two of the M primary synchronization signals are different.
  • the S-PSS sequence c(n) is an M sequence.
  • the following generation formula can be used to generate S-PSS of different sequences:
  • x(n) is the M sequence
  • NID2 is the identification in the group
  • NID2 (0,...,2)
  • SID 3*NID1+NID2
  • SID is the side link synchronization identification
  • SID (0, ...1007)
  • a and b are different positive integers and the value ranges from 0 to 127.
  • the generator polynomial of the linear feedback shift register used to generate two M sequences x(n) can be the following generator polynomial:
  • x(i+7) mod((x(i+4)+x(i)),2);
  • the initial value of the generator polynomial can be the following initial value:
  • the synchronization signal block can also include PBCH.
  • FIGS. 28a to 31b are schematic diagrams of the structure of the synchronization signal block.
  • Fig. 28a to Fig. 28l in the S-SSB shown in Fig. 28a to Fig. 28l, two primary synchronization signals S-PSS are mapped on consecutive symbols.
  • S-SSB in Fig. 28a -In SSB S-PSS1 is mapped to the first symbol position
  • S-PSS2 is mapped to the second symbol position
  • S-SSS is mapped to the fifth symbol position and the sixth symbol position.
  • the synchronization signal block further includes N primary synchronization signals, the symbols occupied by the M primary synchronization signals are before the symbols occupied by the N secondary synchronization signals, and N is a positive integer greater than 1.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIGS. 28a to 31b occupies 6 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal, and the at least one primary synchronization signal belongs to a synchronization signal block, where the synchronization signal block includes M primary synchronization signals, and among the M primary synchronization signals The sequences of any two primary synchronization signals are different, the M sequences of the M primary synchronization signals correspond to M preset symbol positions, and the M is a positive integer greater than or equal to 2.
  • the second terminal device determines the at least one primary synchronization signal according to the sequence of each primary synchronization signal in the at least one primary synchronization signal and the correspondence between the M sequences of the M primary synchronization signals and the M symbol positions. The symbol position of each main synchronization signal in the main synchronization signal.
  • the second terminal device blindly detects the primary synchronization signal in the synchronization signal block.
  • the second terminal device if the second terminal device does not detect the M primary synchronization signals in the synchronization signal block, the second terminal device fails the detection.
  • the second terminal device detects only one primary synchronization signal in the synchronization signal block, the second terminal device detects the sequence of the detected primary synchronization signal, and based on the sequence of the detected primary synchronization signal and the 2 The corresponding relationship between the two sequences of two primary synchronization signals and the two symbol positions determines the symbol position of the detected primary synchronization signal.
  • the second terminal device detects an S-PSS, and the second terminal device detects the sequence of S-PSS1, it can be determined that the detected S-PSS is For the S-PSS at the first symbol position, if the second terminal device detects the S-PSS2 sequence, it can be determined that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device detects two main synchronization signals in the synchronization signal block, the second terminal device detects the sequence of the two main synchronization signals, and determines two according to the sequence of each of the two main synchronization signals The symbol position of the main synchronization signal.
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals, where any two primary synchronization signals in the M primary synchronization signals have different sequences, and the M sequences of M primary synchronization signals correspond to M preset symbol positions, where M is a positive integer greater than or equal to 2
  • the first terminal device sends the synchronization signal block
  • the second terminal device detects that at least A primary synchronization signal, the at least one primary synchronization signal belongs to a synchronization signal block, wherein the synchronization signal block includes M primary synchronization signals, wherein any two primary synchronization signals in the M primary synchronization signals have different sequences ,
  • the M sequences of the M primary synchronization signals correspond to the M preset symbol positions, and the M is a positive integer greater than or equal to 2
  • the second terminal device according to each of the at least one primary synchronization signal The sequence of the primary synchronization signals and the correspondence between the M sequences of the M primary synchronization signal
  • the terminal device can also accurately determine the symbol position of the primary synchronization signal according to the correspondence between the sequence of the primary synchronization signal and the symbol position.
  • FIG. 32 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of this application. This schematic diagram describes the process of transmitting synchronization signals from the perspective of the interaction between the first terminal device and the second terminal device.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • a first terminal device generates a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval Set, a set of symbol intervals in a set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M symbol intervals Any two symbol interval sets in the set are the same, the M and N are positive integers greater than or equal to 2, the M and N are even numbers, and the M/2 primary synchronization signals in the M primary synchronization signals Before N secondary synchronization signals, and among the M primary synchronization signals, M/2 primary synchronization signals other than the M/2 primary synchronization signals are after the N secondary synchronization signals, or the N N/2 secondary synchronization signals in the number of secondary synchronization signals precede the M primary synchronization signals, and among the N secondary synchronization signals, N/2 secondary synchronization signals other than the N/2 secondary
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • N secondary synchronization signals are mapped to N symbols of the synchronization signal block.
  • the M primary synchronization signals correspond to M symbol interval sets, each of the M primary synchronization signals corresponds to one symbol interval set in the M symbol interval sets, and the M symbol interval sets A set of symbol intervals in includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals.
  • any two symbol interval sets in the M symbol interval sets are the same.
  • the synchronization signal block includes two primary synchronization signals (primary synchronization signal A and primary synchronization signal B), and the synchronization signal block includes two secondary synchronization signals (secondary synchronization signal A and secondary synchronization signal B).
  • the two primary synchronization signals correspond to two symbol interval sets (symbol interval set A and symbol interval set B), and each of the two primary synchronization signals corresponds to one of the two symbol interval sets.
  • a set of symbol intervals, the primary synchronization signal A corresponds to the symbol interval set A, and the primary synchronization signal B corresponds to the symbol interval set B.
  • Each symbol interval set includes 2 symbol intervals between a primary synchronization signal and the 2 secondary synchronization signals, that is, the symbol interval set A includes 2 symbol intervals (the symbol interval A1 between the primary synchronization signal A and the secondary synchronization signal A) , The symbol interval A2 between the primary synchronization signal A and the secondary synchronization signal B), the symbol interval set B includes 2 symbol intervals (the symbol interval B1 between the primary synchronization signal B and the secondary synchronization signal A, the primary synchronization signal B and the secondary synchronization signal B Symbol interval B2).
  • the symbol interval set A and the symbol interval set B are the same, that is, the symbol interval A1 is equal to the symbol interval B1 and the symbol interval A2 is equal to the symbol interval B2, or the symbol interval A1 is equal to the symbol interval B2 and the symbol interval A1 is equal to the symbol interval B2.
  • 2 primary synchronizations The symbol interval between the signals is different from the symbol interval between the two secondary synchronization signals, that is, the symbol interval C1 between the primary synchronization signal A and the primary synchronization signal B and the symbol between the secondary synchronization signal A and the secondary synchronization signal B
  • the interval C2 is the same.
  • the M and N are even numbers
  • the M primary synchronization signals are divided by
  • the M/2 primary synchronization signals other than the M/2 primary synchronization signals are after the N secondary synchronization signals, or the N/2 secondary synchronization signals among the N secondary synchronization signals are in the M primary synchronization signals.
  • the N/2 secondary synchronization signals other than the N/2 secondary synchronization signals among the N secondary synchronization signals are after the M primary synchronization signals.
  • half of the primary synchronization signals of the M primary synchronization signals precede the N secondary synchronization signals, and the other half of the primary synchronization signals of the M primary synchronization signals except for the above half number of primary synchronization signals
  • the synchronization signal follows N secondary synchronization signals.
  • the synchronization signal follows the M main synchronization signals.
  • the synchronization signal block can also include PBCH.
  • FIG. 33a to FIG. 33l are schematic diagrams of the structure of the synchronization signal block.
  • S-PSS is mapped to the second symbol position and the third symbol position
  • S-SSS is mapped to the first symbol position and the fourth symbol position.
  • the set of corresponding symbol intervals on the S-PSS at the second symbol position is ⁇ 0,1 ⁇
  • the set of corresponding symbol intervals on the S-PSS at the third symbol position is ⁇ 0,1 ⁇ , that is, at the second symbol position
  • the set of corresponding symbol intervals on the S-PSS is the same as the set of corresponding symbol intervals on the S-PSS at the third symbol position.
  • the S-SSS at the first symbol position is before the S-PSS at the second and third symbol positions
  • the S-SSS at the fourth symbol position is after the S-PSS at the second and third symbol positions .
  • S-PSS is mapped to the first symbol position and the fifth symbol position
  • S-SSS is mapped to the second symbol position and the fourth symbol position.
  • the corresponding symbol interval set on the S-PSS at the first symbol position is ⁇ 0, 2 ⁇
  • the corresponding symbol interval set on the S-PSS at the fifth symbol position is ⁇ 2, 0 ⁇ , that is, at the first symbol position
  • the set of corresponding symbol intervals on the S-PSS is the same as the set of corresponding symbol intervals on the S-PSS at the fifth symbol position.
  • the P-SSS at the first symbol position is before the S-SSS at the second and fourth symbol positions
  • the S-PSS at the fifth symbol position is after the S-SSS at the second and fourth symbol positions .
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIG. 33a to FIG. 33l occupies 6 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal and at least one secondary synchronization signal, and the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, where the synchronization signal block includes M The primary synchronization signal and N secondary synchronization signals, wherein each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval set of the M symbol interval sets includes the M primary synchronization signals.
  • the second terminal device determines the at least one synchronization signal according to the symbol interval between each of the at least one primary synchronization signal and one of the at least one secondary synchronization signal and the time domain sequence.
  • the symbol position of each primary synchronization signal in one primary synchronization signal, the time domain sequence includes the primary synchronization signal before the one primary synchronization signal and the secondary synchronization signal or the primary synchronization signal is after the one primary synchronization signal and the secondary synchronization signal .
  • the second terminal device blindly detects the primary synchronization signal and the secondary synchronization signal in the synchronization signal block.
  • the second terminal device if the second terminal device does not detect the two primary synchronization signals in the synchronization signal block, the second terminal device fails the detection.
  • the second terminal device detects only one primary synchronization signal and one secondary synchronization signal in the synchronization signal block, the second terminal device detects the symbol interval and time domain sequence between the primary synchronization signal and the secondary synchronization signal, so The time domain sequence includes the primary synchronization signal before the secondary synchronization signal or the primary synchronization signal after the secondary synchronization signal.
  • the second terminal device detects one S-PSS and one S-SSS, if the second terminal device detects the symbol interval between the S-PSS and S-SSS Since the symbol interval between the S-PSS at the second symbol position and the S-SSS at the fourth symbol position in the synchronization signal block in FIG. 33a is 1, and the S-PSS at the third symbol position and the first symbol The symbol interval between the S-SSS of the location is 1.
  • the second terminal device detects the time domain sequence between the primary synchronization signal and the secondary synchronization signal.
  • the second terminal The device may determine that the S-PSS is the S-PSS at the second symbol position. If the S-PSS is after the S-SSS, the second terminal device may determine that the S-PSS is the S-PSS at the third symbol position.
  • the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 0, because the synchronization signal block in FIG. 33a is between the S-PSS at the second symbol position and the S-SSS at the first symbol position The symbol interval of is 0, and the symbol interval between the S-PSS at the third symbol position and the S-SSS at the fourth symbol position is 0, the second terminal device detects the time domain sequence between the primary synchronization signal and the secondary synchronization signal , If the S-PSS is before the S-SSS in the time domain, the second terminal device can determine that the S-PSS is the S-PSS at the third symbol position, if the S-PSS is after the S-SSS, the second terminal The device can determine that the S-PSS is the S-PSS at the second symbol position.
  • the second network device can separately The symbol interval before the S-PSS is 0, the symbol interval before the S-PSS is 1, and the symbol interval after the S-PSS is 0 and the symbol interval is 1 after the S-PSS.
  • S-SSS is detected if If the S-SSS is detected at the symbol position where the symbol interval is 0 before the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device may determine that the detected S-PSS is the S-PSS at the third symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 0 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the third symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 1 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the second symbol position.
  • the second terminal device detects only one primary synchronization signal and two secondary synchronization signals in the synchronization signal block, it can be based on the symbol interval between the primary synchronization signal and one of the two secondary synchronization signals detected And the time domain sequence determines the symbol position of the main synchronization signal.
  • the second terminal device detects two primary synchronization signals and two secondary synchronization signals in the synchronization signal block, it can be based on one of the two primary synchronization signals and one of the detected two secondary synchronization signals.
  • the symbol interval and time domain sequence of the secondary synchronization signal determine the symbol position of a primary synchronization signal.
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each of the M primary synchronization signals Corresponding to a set of symbol intervals, a set of symbol intervals in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and Any two symbol interval sets in the M symbol interval sets are the same, the M and N are positive integers greater than or equal to 2, the M and N are even numbers, and M/2 of the M master synchronization signals
  • the synchronization signal is before the N secondary synchronization signals
  • the M/2 primary synchronization signals other than the M/2 primary synchronization signals among the M primary synchronization signals are after the N secondary synchronization signals , Or N/2 of the N secondary synchronization signals are before the M primary synchronization signals, and N of the N secondary synchronization signals other than the N/2 secondary synchronization signals /2 secondary synchronization signals
  • the second terminal device is based on the difference between each primary synchronization signal in the at least one primary synchronization signal and the at least one secondary synchronization signal.
  • the symbol interval between one secondary synchronization signal and the time domain sequence determine the symbol position of each primary synchronization signal in the at least one primary synchronization signal, and the time domain sequence includes the primary synchronization signal in the secondary synchronization signal of the one primary synchronization signal.
  • the terminal device Before the signal or the primary synchronization signal is after the one primary synchronization signal and the secondary synchronization signal.
  • FIG. 34 is a schematic diagram of a method for transmitting a synchronization signal in an embodiment of this application.
  • the schematic diagram describes the process of transmitting the synchronization signal from the perspective of the interaction between the first terminal device and the second terminal device.
  • a method for transmitting a synchronization signal provided by an embodiment of the present application includes:
  • the first terminal device generates a synchronization signal block, where the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1, and among the M primary synchronization signals
  • Each primary synchronization signal corresponds to a set of symbol intervals, and a set of symbol intervals in the set of M symbol intervals includes 1 of the M primary synchronization signals and the 1 secondary synchronization signal. Symbol intervals, and any two symbol interval sets in the M symbol interval sets are the same.
  • the first terminal device generates a synchronization signal block.
  • the synchronization signal block includes M primary synchronization signals and 1 secondary synchronization signal.
  • the M primary synchronization signals are mapped to M symbols of the synchronization signal block.
  • one secondary synchronization signal is mapped to one symbol of the synchronization signal block.
  • the M primary synchronization signals correspond to M symbol interval sets, each of the M primary synchronization signals corresponds to one symbol interval set in the M symbol interval sets, and the M symbol interval sets A set of symbol intervals in includes one symbol interval between one of the M primary synchronization signals and the one secondary synchronization signal.
  • any two symbol interval sets in the M symbol interval sets are the same.
  • the synchronization signal block includes two primary synchronization signals (primary synchronization signal A and primary synchronization signal B), and the synchronization signal block includes one secondary synchronization signal (secondary synchronization signal A).
  • the two primary synchronization signals correspond to two symbol interval sets (symbol interval set A and symbol interval set B), and each of the two primary synchronization signals corresponds to one of the two symbol interval sets.
  • a set of symbol intervals, the primary synchronization signal A corresponds to the symbol interval set A, and the primary synchronization signal B corresponds to the symbol interval set B.
  • Each symbol interval set includes 1 symbol interval between a primary synchronization signal and the 1 secondary synchronization signal, that is, the symbol interval set A includes 1 symbol interval (the symbol interval A1 between the primary synchronization signal A and the secondary synchronization signal A). ), the symbol interval set B includes 1 symbol interval (the symbol interval B1 of the primary synchronization signal B and the secondary synchronization signal A). And the symbol interval set A and the symbol interval set B are the same, that is, the symbol interval A1 is equal to the symbol interval B1.
  • the synchronization signal block can also include PBCH.
  • FIG. 35a to FIG. 35d are schematic diagrams of the structure of the synchronization signal block.
  • S-PSS is mapped to the first symbol position and the third symbol position
  • S-SSS is mapped to the second symbol position.
  • the first symbol position is The set of corresponding symbol intervals on the S-PSS is ⁇ 0 ⁇
  • the set of corresponding symbol intervals on the S-PSS at the third symbol position is ⁇ 0 ⁇ , that is, the corresponding symbol interval on the S-PSS at the first symbol position
  • the set is the same as the set of corresponding symbol intervals on the S-PSS at the third symbol position.
  • the S-PSS at the first symbol position is before the S-SSS at the second symbol position.
  • the S-PSS of the third symbol position is after the S-SSS of the second symbol position.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the synchronization signal block shown in FIGS. 35a to 35d occupies 5 consecutive symbols in the time domain.
  • the first terminal device sends the synchronization signal block.
  • the first terminal device after the first terminal device generates the synchronization signal block, it needs to send the synchronization signal block to the second terminal device.
  • the second terminal device detects at least one primary synchronization signal and one secondary synchronization signal, and the at least one primary synchronization signal and the one secondary synchronization signal belong to the same synchronization signal block, where the synchronization signal block only includes M One primary synchronization signal and one secondary synchronization signal, where M is a positive integer greater than 1, each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets
  • the symbol interval set includes 1 symbol interval between one primary synchronization signal and the 1 secondary synchronization signal in the M primary synchronization signals, and any two symbol interval sets in the M symbol interval sets are the same;
  • the second terminal device determines each primary synchronization signal in the at least one primary synchronization signal according to the time domain sequence between each primary synchronization signal and the secondary synchronization signal in the at least one primary synchronization signal.
  • the time domain sequence includes the primary synchronization signal before the secondary synchronization signal or the primary synchronization signal after the secondary synchronization signal.
  • the number of primary synchronization signals detected by the second terminal device may be less than M or equal to M.
  • the second terminal device may determine the time domain of the primary synchronization signal and the secondary synchronization signal according to the time domain. The sequence above determines the symbol position of the primary synchronization signal.
  • S-SSS is mapped on the second symbol position
  • S-PSS is mapped on the first symbol position and the third symbol position.
  • the two symbol intervals between the S-SSS at the second symbol position and the two S-PSSs in Figure 35a are the same, in the time domain, the S-PSS at the first symbol position is at the S-PSS at the second symbol position.
  • the S-PSS at the third symbol position is after the S-SSS at the second symbol position. If the second terminal device detects one S-PSS and one S-SSS, and the second terminal device detects that the symbol interval between the S-PSS and the S-SSS is 0, the second terminal device detects that the S-SSS is Before the S-PSS, the second terminal device can determine that the detected S-PSS is the S-PSS at the third symbol position, and the second terminal device detects that the S-SSS is after the S-PSS, then the second terminal device The device can determine that the detected S-PSS is the S-PSS at the first symbol position.
  • the second network device can be in the S-PSS
  • the S-SSS is detected at the symbol position with the symbol interval of 0 before and after the S-PSS. If the S-SSS is detected at the symbol position with the symbol interval of 0 before the S-PSS, the second terminal device can It is determined that the detected S-PSS is the S-PSS of the third symbol position. If an S-SSS is detected at a symbol position with a symbol interval of 0 after the S-PSS, the second terminal device may determine that the detected S-PSS is the S-PSS at the first symbol position.
  • the first terminal device generates a synchronization signal block
  • the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1, and the M primary synchronization signals
  • M is a positive integer greater than 1
  • the M primary synchronization signals Each primary synchronization signal in the synchronization signal corresponds to a symbol interval set, and a symbol interval set in the M symbol interval sets includes one of the M primary synchronization signals and the 1 secondary synchronization signal.
  • the first terminal device sends the synchronization signal block;
  • the second terminal device detects at least one primary synchronization signal and one A secondary synchronization signal, the at least one primary synchronization signal and one secondary synchronization signal belong to the same synchronization signal block, wherein the synchronization signal block only includes M primary synchronization signals and 1 secondary synchronization signal, and M is greater than 1.
  • each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes one primary synchronization signal in the M primary synchronization signals And one symbol interval between the one secondary synchronization signal, and any two symbol interval sets in the M symbol interval sets are the same;
  • the second terminal device according to each of the at least one primary synchronization signal
  • the time domain sequence between each primary synchronization signal and the secondary synchronization signal determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal, and the time domain sequence includes the primary synchronization signal in the secondary synchronization signal
  • the previous or primary synchronization signal follows the secondary synchronization signal.
  • the terminal device when the terminal device detects only one S-PSS and one S-SSS, even if the symbol interval set corresponding to each primary synchronization signal is the same, the terminal device can also detect S-PSS and S-SSS The time-domain sequence between them accurately determines the symbol position of the S-PSS.
  • the terminal device 3600 includes:
  • the processing module 3601 and the sending module 3602 are used to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each of the M primary synchronization signals corresponds to In one symbol interval set, one symbol interval set in the M symbol interval sets includes N symbol intervals between one primary synchronization signal in the M primary synchronization signals and the N secondary synchronization signals, and the Any two symbol interval sets in the M symbol interval sets do not include the same symbol interval, and the M and N are positive integers greater than or equal to 2;
  • the sending module 3602 is used to send the synchronization signal block.
  • the symbols occupied by the M primary synchronization signals are before the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M primary synchronization signals.
  • the processing module 3702 is configured to determine each of the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal. The symbol position of the main synchronization signal.
  • the processing module 3702 is configured to determine the symbol between each of the at least one primary synchronization signal and one of the at least one secondary synchronization signal interval;
  • the symbol position of the primary synchronization signal corresponding to the symbol interval set to which the symbol interval between one primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal belongs is the one The symbol position of the primary synchronization signal, where the set of symbol intervals belongs to the set of M symbol intervals.
  • the symbols occupied by the M primary synchronization signals are before the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • the terminal device 3600 includes:
  • the processing module 3601 is configured to generate a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, where the value of M is 1 and N is a positive integer greater than 1, Or, when the M is a positive integer greater than 1 and the value of N is 1, and when the M is a positive integer greater than 1 and the value of N is 1, the M primary synchronization signals The symbol intervals of any two primary synchronization signals and one secondary synchronization signal are different, and the M primary synchronization signals correspond to M symbol positions;
  • the sending module 3602 is used to send the synchronization signal block.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal and one secondary synchronization signal, where the at least one primary synchronization signal and the one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block only includes M Two primary synchronization signals and one secondary synchronization signal, where M is a positive integer greater than 1, and any two primary synchronization signals in the M primary synchronization signals have different symbol intervals from the one secondary synchronization signal;
  • the processing module 3702 is configured to determine the symbol position of each primary synchronization signal in the at least one primary synchronization signal according to the symbol interval between each primary synchronization signal in the at least one primary synchronization signal and the one secondary synchronization signal .
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect a primary synchronization signal, where the primary synchronization signal belongs to a synchronization signal block, and the synchronization signal block includes only M primary synchronization signals and N secondary synchronization signals, and the value of M Is 1 and the N is a positive integer greater than 1, and the M primary synchronization signals correspond to M symbol positions;
  • the processing module 3702 is configured to determine the symbol position of the one primary synchronization signal according to the correspondence between the M primary synchronization signals and the M symbol positions.
  • the terminal device 3600 includes:
  • the processing module 3601 is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval Set, one symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the N secondary synchronization signals
  • the sequences of any two auxiliary synchronization signals in the signal are different, the N sequences of the N auxiliary synchronization signals correspond to N symbol positions, and the M and N are positive integers greater than or equal to 2;
  • the sending module 3602 is used to send the synchronization signal block.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal, where the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, and the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one of the M symbol interval sets includes the M primary synchronization signals.
  • the processing module 3702 is configured to determine the at least one secondary synchronization signal according to the sequence of the secondary synchronization signal in the at least one secondary synchronization signal and the correspondence between the N sequences of the N secondary synchronization signals and the N preset symbol positions The symbol position of the secondary synchronization signal in the signal; according to the symbol position of the secondary synchronization signal in the at least one secondary synchronization signal and each of the secondary synchronization signal in the at least one secondary synchronization signal and the at least one primary synchronization signal The symbol interval between the two primary synchronization signals determines the symbol position of each primary synchronization signal in the at least one primary synchronization signal.
  • the terminal device 3600 includes:
  • the processing module 3601 is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals, where any two primary synchronization signals in the M primary synchronization signals have different sequences, and the M primary synchronization signals The M sequences of corresponding to M symbol positions, where M is a positive integer greater than or equal to 2;
  • the sending module 3602 is used to send the synchronization signal block.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal, the at least one primary synchronization signal belongs to a synchronization signal block, wherein the synchronization signal block includes M primary synchronization signals, and among the M primary synchronization signals The sequences of any two primary synchronization signals are different, the M sequences of the M primary synchronization signals correspond to M preset symbol positions, and the M is a positive integer greater than or equal to 2;
  • the processing module 3702 is configured to determine the at least one primary synchronization signal according to the sequence of each primary synchronization signal in the at least one primary synchronization signal and the correspondence between the M sequences of the M primary synchronization signals and the M symbol positions The symbol position of each main synchronization signal in the signal.
  • the terminal device 3600 includes:
  • the processing module 3601 is configured to generate a synchronization signal block, the synchronization signal block includes M primary synchronization signals and N secondary synchronization signals, wherein each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval Set, one symbol interval set in the set of M symbol intervals includes N symbol intervals between one of the M primary synchronization signals and the N secondary synchronization signals, and the M symbol intervals Any two symbol interval sets in the set are the same, the M and N are positive integers greater than or equal to 2, the M and N are even numbers, and the M/2 primary synchronization signals in the M primary synchronization signals Before N secondary synchronization signals, and among the M primary synchronization signals, M/2 primary synchronization signals other than the M/2 primary synchronization signals are after the N secondary synchronization signals, or the N N/2 secondary synchronization signals in the number of secondary synchronization signals precede the M primary synchronization signals, and among the N secondary synchronization signals, N/2 secondary synchronization signals other than the N/2 secondary synchron
  • the sending module 3602 is used to send the synchronization signal block.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal and at least one secondary synchronization signal, the at least one primary synchronization signal and the at least one secondary synchronization signal belong to the same synchronization signal block, wherein the synchronization signal block includes M The primary synchronization signal and N secondary synchronization signals, wherein each primary synchronization signal of the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval set of the M symbol interval sets includes the M primary synchronization signals.
  • the processing module 3702 is configured to determine the at least one primary synchronization signal according to the symbol interval and the time domain sequence between each primary synchronization signal in the at least one primary synchronization signal and one secondary synchronization signal in the at least one secondary synchronization signal.
  • the symbol position of each primary synchronization signal in the synchronization signal, the time domain sequence includes the primary synchronization signal before the one primary synchronization signal and the secondary synchronization signal or the primary synchronization signal is after the one primary synchronization signal and the secondary synchronization signal.
  • the terminal device 3600 includes:
  • the processing module 3601 is configured to generate a synchronization signal block, the synchronization signal block includes only M primary synchronization signals and 1 secondary synchronization signal, where M is a positive integer greater than 1, and among the M primary synchronization signals
  • M is a positive integer greater than 1
  • Each primary synchronization signal corresponds to a set of symbol intervals, and a set of symbol intervals in the set of M symbol intervals includes 1 of the M primary synchronization signals and the 1 secondary synchronization signal.
  • Symbol intervals, and any two symbol interval sets in the M symbol interval sets are the same;
  • the sending module 3602 is used to send the synchronization signal block.
  • the terminal device 3700 includes:
  • the receiving module 3701 is configured to detect at least one primary synchronization signal and secondary synchronization signal.
  • the at least one primary synchronization signal and the secondary synchronization signal belong to the same synchronization signal block, wherein the synchronization signal block includes only M primary synchronization signals.
  • Synchronization signal and 1 secondary synchronization signal where M is a positive integer greater than 1, each primary synchronization signal in the M primary synchronization signals corresponds to a symbol interval set, and one symbol interval in the M symbol interval set
  • the set includes 1 symbol interval between one primary synchronization signal and the 1 secondary synchronization signal in the M primary synchronization signals, and any two symbol interval sets in the M symbol interval sets are the same;
  • the processing module 3702 is configured to determine the symbol of each primary synchronization signal in the at least one primary synchronization signal according to the time domain sequence between each primary synchronization signal and the secondary synchronization signal in the at least one primary synchronization signal Position, the time domain sequence includes the primary synchronization signal before the secondary synchronization signal or the primary synchronization signal after the secondary synchronization signal.
  • the symbols occupied by the M primary synchronization signals precede the symbols occupied by the N secondary synchronization signals.
  • the synchronization signal block occupies consecutive symbols in the time domain.
  • An embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes part or all of the steps recorded in the above method embodiment.
  • the device is a terminal device.
  • the terminal device may include a processor 131 (for example, a CPU), a memory 132, a transmitter 134, and a receiver 133.
  • the transmitter 134 and the receiver 133 are coupled to the processor 131, and the processor 131 controls the sending action of the transmitter 134 and the receiving action of the receiver 133.
  • the memory 132 may include a high-speed RAM memory, or may also include a non-volatile memory NVM, such as at least one disk memory.
  • the memory 132 may store various instructions to complete various processing functions and implement the methods of the embodiments of the present application. step.
  • the terminal device involved in the embodiment of the present application may further include one or more of a power supply 135, a communication bus 136, and a communication port 137.
  • the receiver 133 and the transmitter 134 may be integrated in the transceiver of the terminal device, or may be independent receiving and transmitting antennas on the terminal device.
  • the communication bus 136 is used to implement communication connections between components.
  • the aforementioned communication port 137 is used to implement connection and communication between the terminal device and other peripherals.
  • the transmitter 134 in the terminal device can perform the actions performed by the sending module in FIG. 36
  • the processor 131 in the terminal device can perform the actions performed by the processing module in FIG. 36 or FIG. 37
  • the terminal device receives
  • the receiver 133 can perform the actions performed by the receiving module in FIG. 37, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the aforementioned memory 132 is used to store computer executable program codes, and the program codes include instructions; when the processor 131 executes the instructions, the instructions cause the processor 131 to perform the actions performed by the processing module of the terminal device in the aforementioned embodiments,
  • the transmitter 134 is made to execute the actions of the sending module of the terminal device in the above-mentioned embodiment, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the present application also provides a chip system that includes a processor for supporting the above-mentioned terminal device to realize its related functions, for example, receiving or processing the data and/or information involved in the above-mentioned method embodiment.
  • the chip system further includes a memory, and the memory is used to store necessary program instructions and data of the terminal device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • wired such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)
  • wireless such as infrared, wireless, microwave, etc.
  • the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • 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 above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit 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 all 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 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 method described in each embodiment 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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Abstract

本申请公开了一种传输同步信号的方法及终端设备，使得终端设备可以准确地判定主同步信号的符号位置，可以应用于车联网，例如V2X或LTE-V等。本申请方法包括：第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块。

Description

一种传输同步信号的方法及终端设备
本申请要求于2019年02月03日提交中国国家知识产权局、申请号为201910108855.9、发明名称为“一种传输同步信号的方法及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种传输同步信号的方法及终端设备。
背景技术
同步信号块(synchronization signal block，SSB)是新无线(new radio，NR)中定义的一种信号结构，其包含主同步信号(primary synchronization signal，PSS)、辅同步信号(secondary synchronization signal，SSS)以及物理广播信道(physical broadcast channel，PBCH)。PSS和SSS主要作用是帮助终端设备识别小区以及和小区进行同步，PBCH则包含了最基本的系统信息例如系统帧号、帧内定时信息等。
终端设备到终端设备(device to device，D2D)是一种端到端直接通信的技术，与传统的蜂窝技术通信不同的是，终端设备与终端设备之间的通信位于侧行链路，不再需要基站的中转，终端设备和终端设备之间可以直接进行通信。在侧行链路中定义了侧行链路同步信号块(sidelink synchronization signal block，S-SSB)，其包括侧行链路主同步信号(sidelink primary synchronization signal，S-PSS)、侧行链路辅同步信号(sidelink secondary synchronization signal，S-SSS)以及物理广播信道(physical broadcast channel，PBCH)。
在现有技术中，为了对抗高速场景下检测成功率下降的问题，将S-PSS和S-SSS分别在相邻符号位进行一次重复，即S-SSB中包括两个相邻符号位的S-PSS以及两个相邻符号位的S-SSS，例如S-SSB中包括相邻的第一S-PSS和第二S-PSS，以及相邻的第一S-SSS和第二S-SSS，然而上述的设计中，第一S-PSS与第一S-SSS的符号间隔数和第二S-PSS与第二S-SSS的符号间隔数相同，若终端设备只检测到一个S-PSS和一个S-SSS，可能会出现终端设备无法准确判定检测到的S-PSS的符号位的情况。
发明内容
本申请提供了一种传输同步信号的方法及终端设备，可以准确地判定S-PSS的符号位置。
第一方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
所述第一终端设备发送所述同步信号块。
一些实施例中，M和N的取值可以相同也可以不同，本申请对此并不限定。一些实施例中，由于同步信号块中的M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，则每一个符号间隔对应于唯一的符号间隔集合，而符号间隔集合又对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中的一个主同步信号与检测到的至少一个辅同步信号中的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中的一个主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中的一个主同步信号的符号位置。
一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块；第二终端设备检测到主同步信号和辅同步信号，其中，所述主同步信号和所述辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第二终端设备根据所述主同步信号与所述辅同步信号之间的符号间隔确定所述主同步信号的符号位置。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，由于每个主同步信号对应的符号间隔集合之间不包含相同的符号间隔数，终端设备可以根据检测到S-PSS和S-SSS之间的符号间隔数准确地判定S-PSS的符号位置。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。一些实施例中，第二终端设备可以先接收到同步信号块中的M个主同步信号，并检测这M个主同步信号，在检测完M个主同步信号之后，再检测同步信号块中的N个辅同步信号，不需要缓存额外的数据，降低了第二终端设备的缓存开销。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第二方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号 间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
在一种可选设计中，所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置，包括：
所述第二终端设备确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
所述第二终端设备确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第三方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，其中，所述M的数值为1且所述N为大于1的正整数，或，所述M为大于1的正整数且所述N的数值为1，且当所述M为大于1的正整数且所述N的数值为1时，所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，所述M个主同步信号与M个符号位置对应；
所述第一终端设备发送所述同步信号块。
在一些实施例中，同步信号块仅包括M个主同步信号和1个辅同步信号，其中，M为大于1的正整数。一些实施例中，M个主同步信号与1个辅同步信号之间有M个符号间隔，即M个主同步信号中的每个辅同步信号与1个辅同步信号中之间有1个符号间隔，且由于所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，因此M个主同步信号与1个辅同步信号之间的M个符号间隔均不相同，则每一个符号间隔对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中的一个主同步信号与检测到的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中的一个主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中的一个主同步信号的符号位置。
在一些实施例中，同步信号块仅包括1个主同步信号和N个辅同步信号，其中，N为大于1的正整数。由于主同步信号块中仅包含一个S-PSS，终端设备可以根据检测到S-PSS和符号位置的对应关系准确地判定S-PSS的符号位置。
第四方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二 终端设备检测到至少一个主同步信号和一个辅同步信号，其中，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同；
所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
第五方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到一个主同步信号，其中，所述一个主同步信号属于同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应；
所述第二终端设备根据所述M个主同步信号与M个符号位置的对应关系确定所述一个主同步信号的符号位置。
第六方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块。
在所述M个符号间隔集合中至少两个符号间隔集合之间包含相同的符号间隔的场景中，由于N个辅同步信号中任意两个辅同步信号的序列不同，且N个辅同步信号的N个序列与N个符号位置对应，第二终端设备可以根据所述至少一个辅同步信号中的一个辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述一个辅同步信号的符号位置，由于一个辅同步信号与M个主同步信号之间的M个符号间隔不同，则第二终端设备根据所述一个辅同步信号的符号位置以及所述一个辅同步信号与至少一个主同步信号中的一个主同步信号之间的符号间隔确定所述一个主同步信号的符号位置。
在所述M个符号间隔集合中至少两个符号间隔集合之间不包含相同的符号间隔的场景中，由于同步信号块中的M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，则每一个符号间隔对应于唯一的符号间隔集合，而符号间隔集合又对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中的一个主同步信号与检测到的至少一个辅同步信号中的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中的一个主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中的一个 主同步信号的符号位置。
第七方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；
所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅同步信号的符号位置；
所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
第八方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个符号位置对应，所述M为大于或等于2的正整数；
所述第一终端设备发送所述同步信号块。
由于M个主同步信号中任意两个主同步信号的序列不同，终端设备也可以根据主同步信号的序列和符号位置的对应关系准确地判定主同步信号的符号位置。
第九方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到至少一个主同步信号，所述至少一个主同步信号属于同步信号块，其中，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数；
所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号的序列以及所述M个主同步信号的M个序列与M个符号位置的对应关系确定所述至少一个主同步信号中的每个主同步信号主同步信号的符号位置。
第十方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2 个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
所述第一终端设备发送所述同步信号块。
在终端设备只检测到一个S-PSS和一个S-SSS的情况下，即使每个主同步信号对应的符号间隔集合相同，终端设备也可以根据检测到S-PSS和S-SSS之间的符号间隔和时域顺序准确地判定S-PSS的符号位置。
第十一方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，所述至少一个主同步信号和至少一个辅同步信号属于同一个同步信号块，其中，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔以及时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述一个主同步信号辅同步信号之前或主同步信号在所述一个主同步信号辅同步信号之后。
第十二方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，其中，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
所述第一终端设备发送所述同步信号块。
在终端设备只检测到一个S-PSS和一个S-SSS的情况下，即使每个主同步信号对应的符号间隔集合相同，终端设备也可以根据检测到S-PSS和S-SSS之间的时域顺序准确地判定S-PSS的符号位置。
第十三方面，本申请提供了一种传输同步信号的方法，传输同步信号的方法包括：第二终端设备检测到至少一个主同步信号和辅同步信号，所述至少一个主同步信号和所述辅同步信号属于同一个同步信号块，其中，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的 一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述辅同步信号之间的时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述辅同步信号之前或主同步信号在所述辅同步信号之后。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第十四方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
发送模块，用于发送所述同步信号块。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第十五方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
处理模块，用于根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
在一种可选设计中，所述处理模块，用于确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第十六方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，其中，所述M的数值为1且所述N为大于1的正整数，或，所述M为大于1的正整数且所述N的数值为1，且当所述M为大于1的正整数且所述N的数值为1时，所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，所述M个主同步信号与M个符号位置对应；
发送模块，用于发送所述同步信号块。
第十七方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号和一个辅同步信号，其中，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同；
处理模块，用于根据所述至少一个主同步信号中的每个主同步信号与所述一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
第十八方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到一个主同步信号，其中，所述一个主同步信号属于同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应；
处理模块，用于根据所述M个主同步信号与M个符号位置的对应关系确定所述一个主同步信号的符号位置。
第十九方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；
发送模块，用于发送所述同步信号块。
第二十方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；
处理模块，用于根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅 同步信号的符号位置；根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
第二十一方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个符号位置对应，所述M为大于或等于2的正整数；
发送模块，用于发送所述同步信号块。
第二十二方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号，所述至少一个主同步信号属于同步信号块，其中，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数；
处理模块，用于根据所述至少一个主同步信号中的每个主同步信号的序列以及所述M个主同步信号的M个序列与M个符号位置的对应关系确定所述至少一个主同步信号中的每个主同步信号主同步信号的符号位置。
第二十三方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
发送模块，用于发送所述同步信号块。
第二十四方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号和至少一个辅同步信号，所述至少一个主同步信号和至少一个辅同步信号属于同一个同步信号块，其中，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信 号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
处理模块，用于根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔以及时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述一个主同步信号辅同步信号之前或主同步信号在所述一个主同步信号辅同步信号之后。
第二十五方面，本申请提供了一种终端设备，终端设备包括：
处理模块，用于生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，其中，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
发送模块，用于发送所述同步信号块。
第二十六方面，本申请提供了一种终端设备，终端设备包括：
接收模块，用于检测到至少一个主同步信号和辅同步信号，所述至少一个主同步信号和所述辅同步信号属于同一个同步信号块，其中，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
处理模块，用于根据所述至少一个主同步信号中的每个主同步信号与所述辅同步信号之间的时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述辅同步信号之前或主同步信号在所述辅同步信号之后。
在一种可选设计中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一种可选设计中，所述同步信号块在时域上占用连续的符号。
第二十七方面，本申请实施例提供了一种终端设备，该终端设备具有实现上述方法中终端设备行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多于一个与上述功能相对应的模块。可选的，该终端设备可以是一种用户设备。
第二十八方面，本申请实施例提供了一种计算机存储介质，用于储存为上述终端设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第二十九方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，用于支持网络设备实现上述方面中所涉及的功能，例如，例如生成或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
第三十方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，用于支持终端设备实现上述方面中所涉及的功能，例如，例如接收或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
从以上技术方案可以看出，本申请具有以下优点：
一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块；第二终端设备检测到主同步信号和辅同步信号，其中，所述主同步信号和所述辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第二终端设备根据所述主同步信号与所述辅同步信号之间的符号间隔确定所述主同步信号的符号位置。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，由于每个主同步信号对应的符号间隔集合之间不包含相同的符号间隔数，终端设备可以根据检测到S-PSS和S-SSS之间的符号间隔数准确地判定S-PSS的符号位置。
附图说明
图1为车联网的场景示意图；
图2为一种SSB资源结构的示意图；
图3为一种S-SSB资源结构的示意图；
图4为本申请实施例中一种传输同步信号的方法的示意图；
图5a至图5o为本申请实施例中同步信号块的结构示意图；
图6a至图6h为本申请实施例中同步信号块的结构示意图；
图7a至图7i为本申请实施例中同步信号块的结构示意图；
图8a至图8c为本申请实施例中同步信号块的结构示意图；
图9a至图9d为本申请实施例中同步信号块的结构示意图；
图10为本申请实施例中一种传输同步信号的方法的示意图；
图11a至图11f为本申请实施例中同步信号块的结构示意图；
图12a至图12e为本申请实施例中同步信号块的结构示意图；
图13a至图13d为本申请实施例中同步信号块的结构示意图；
图14a至图14e为本申请实施例中同步信号块的结构示意图；
图15a至图15f为本申请实施例中同步信号块的结构示意图；
图16a至图16f为本申请实施例中同步信号块的结构示意图；
图17a至图17f为本申请实施例中同步信号块的结构示意图；
图18a至图18f为本申请实施例中同步信号块的结构示意图；
图19a至图19f为本申请实施例中同步信号块的结构示意图；
图20a至图20f为本申请实施例中同步信号块的结构示意图；
图21为本申请实施例中一种传输同步信号的方法的示意图；
图22为本申请实施例中一种传输同步信号的方法的示意图；
图23a至图23l为本申请实施例中同步信号块的结构示意图；
图24a至图24h为本申请实施例中同步信号块的结构示意图；
图25a至图25f为本申请实施例中同步信号块的结构示意图；
图26a和图26b为本申请实施例中同步信号块的结构示意图；
图27为本申请实施例中一种传输同步信号的方法的示意图；
图28a至图28l为本申请实施例中同步信号块的结构示意图；
图29a至图29h为本申请实施例中同步信号块的结构示意图；
图30a至图30f为本申请实施例中同步信号块的结构示意图；
图31a和图31b为本申请实施例中同步信号块的结构示意图；
图32为本申请实施例中一种传输同步信号的方法的示意图；
图33a至图33l为本申请实施例中同步信号块的结构示意图；
图34为本申请实施例中一种传输同步信号的方法的示意图；
图35a至图35d为本申请实施例中同步信号块的结构示意图；
图36为本申请实施例中一种终端设备的结构示意图；
图37为本申请实施例中一种终端设备的结构示意图；
图38为本申请实施例中一种终端设备的结构示意图。
具体实施方式
本申请提供了一种传输同步信号的方法及终端设备，使得终端设备可以准确地判定S-PSS的符号位置。
本申请实施例中的方法可以适用于D2D通信中，例如车联网LTE(LTE-vehicle，LTE-V)系统或其他车联网(vehicle to everything，V2X)系统，当然，还可以应用但不限于于更多终端设备间通信的应用系统中。结合图1进行理解，图1为车联网的场景示意图。如图1所示，图1示出的场景中包括第一终端设备100以及第二终端设备200。第一终端设备100与第二终端设备200之间通过D2D通信协议进行通信，例如，基于V2X的通信协议。
本申请中的终端设备也可以指用户设备(user equipment，UE)、接入终端设备、用户单元、用户站、移动站、移动台、远方站、远程终端设备、移动设备、用户终端设备、终端设备、无线通信设备、用户代理或用户装置。其中，接入终端设备可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless  local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的终端设备等。
作为示例而非限定，在本发明实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
同步信号块(synchronization signal block，SS block，SSB)是新无线(new radio,NR)网络中定义的一种信号结构，现有技术中，参照图2，图2为一种SSB资源结构的示意图。如图2所示，一个同步信号块由一个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号的主同步信号(primary synchronization signal，PSS)，一个符号的辅同步信号(secondary synchronization signal，SSS)，和两个符号的物理广播信道(physical broadcast channel，PBCH)组成。PSS、SSS和PBCH在同步信号块中的位置如图2所示，其中，PSS/SSS的序列长度为127，在频域上占有127个子载波(subcarrier，SC)，而PBCH在频域上占有288个子载波。
应理解，在本发明各种实施例中，符号和子载波分别表示传输信号的时频资源在时域和频域的粒度单元，它们可以具有目前通信系统中的含义，也可以具有未来通信系统中的含义。另外，若在未来通信系统中它们的名称发生了改变，它们也可以变换为未来通信系统中的名称。
在V2X通信的场景下，第一终端设备发送侧行链路同步信号块(sidelink synchronization signal block，S-SSB)到第二终端设备，来完成时间的同步，侧行链路同步信号块可以借鉴NR的设计思路，将侧行链路主同步信号(sidelink primary synchronization signal，S-PSS)，侧行链路辅同步信号(sidelink secondary synchronization signal，S-SSS)和PBCH封装在一个S-SSB内。同时，为了提高单个S-SSB的一次检测成功概率，在S-SSB内部重复发送S-PSS和S-SSS。在一种S-SSB的资源结构设计中，参照图3，图3为一种S-SSB资源结构的示意图。如图3所示，一个侧行链路同步信号块由两个正交频分复用(orthogonal frequency division multiplexing，OFDM)符号的S-PSS，两个符号的S-SSS，和两个符号的物理广播信道(physical broadcast channel，PBCH)组成。S-SSB占据6个符号，其中第一和第二符号位置上放置了两个重复的S-PSS序列，第三和第四符号位置上放置了PBCH，第五和第六符号位置上放置了两个重复的S-SSS序列。
需要说明的是，一些实施例中S-PSS和S-SSS可以分别具有和现有技术中的PSS和SSS的功能。例如，S-PSS用于确定OFDM符号定时、频率同步、时隙定时和小区组内的小区ID；S-SSS 可以用于确定帧定时、小区组等，或者，S-PSS也可以具有与目前的PSS和SSS不同的功能，本申请实施例对此并未限定。另外S-PSS和S-SSS还可以采用分别与目前的PSS和SSS相同或不同的序列，本申请实施例对此也不限定。另外，在一些实施例中，PBCH可以具有与现有技术中的PBCH相同或不同的功能，本申请对比并不限定。
若第一终端设备发送图3中的S-SSB到第二终端设备，会导致在一些情况下第二终端设备出现S-PSS的符号位置判定歧义。例如，当第二终端设备仅检测到S-SSB中的1个S-PSS时，可以在该S-PSS之后间隔3个符号位置检测S-SSS。
如果在间隔3个符号位置未检测到S-SSS，则在该位置相邻的两个符号位置检测S-SSS。若在该位置的后面一个符号位置检测到S-SSS，则检测到的S-PSS为第一符号位置的S-PSS；若在该位置的前面一个符号位置检测到S-SSS，则检测到的S-PSS为第二符号位置的S-PSS；若在该位置的前面一个符号以及后面一个符号位置都未检测到S-SSS，则第二终端设备同步失败(由于两个S-SSS都未检测到导致的)。
如果在间隔3个符号位置检测到S-SSS，则在该位置相邻的两个符号位置检测S-SSS。若在该位置的后面一个符号位置检测到S-SSS，则检测到的S-PSS为第一符号位置的S-PSS；若在该位置的前面一个符号位置检测到S-SSS，则检测到的S-PSS为第二符号位置的S-PSS；若在该位置的前面一个符号以及后面一个符号位置都未检测到S-SSS，则相当于第二网络设备只检测到了S-SSB中的一个S-PSS和一个S-SSS，且检测到的S-PSS和检测到的S-SSS之间的符号位置间隔为3。
从图3中我们可以看出，一个S-SSB中，第一符号位置的S-PSS与第五符号位置的S-SSS之间符号位置间隔为3，且第二符号位置的S-PSS与第六符号位置的S-SSS之间符号位置间隔也为3，因此，若第二网络设备只检测到了S-SSB中的一个S-PSS和一个S-SSS，且检测到的S-PSS和检测到的S-SSS之间的符号位置间隔为3，则第二终端设备有可能检测到第一符号位置的S-PSS和第五符号位置的S-SSS，也有可能检测到第二符号位置的S-PSS和第六符号位置的S-SSS，因此，第二终端设备无法准确的判定S-PSS的符号位置。
为了解决上述问题，本申请实施例提供了一种传输同步信号的方法。
下面结合各个附图对本申请实施例技术方案的主要实现原理、具体实施例方式及其对应能够达到的有益效果进行详细的阐述。
参照图4，图4为本申请实施例中一种传输同步信号的方法的示意图。该示意图从第一终端设备和第二终端设备之间交互的角度，描述了传输同步信号的过程。如图4所示，本申请实施例提供的一种传输同步信号的方法，包括：
401、第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数。
一些实施例中，M和N的取值可以相同也可以不同，本申请对此并不限定。
一些实施例中，第一终端设备生成同步信号块，同步信号块中包括M个主同步信号和 N个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，N个辅同步信号映射到同步信号块的N个符号中。所述M个主同步信号对应M个符号间隔集合，所述M个主同步信号中的每个主同步信号对应于所述M个符号间隔集合中的一个符号间隔集合，且M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔。
一些实施例中，所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，换一种表述方式，所述M个符号间隔集合中任意两个符号间隔集合之间的交集为空集，在另一种表述方式中，所述M个符号间隔集合中任意两个符号间隔集合之间包含的符号间隔不重复。
例如，若同步信号块中包括2个主同步信号(主同步信号A和主同步信号B)，同步信号块中包括2个辅同步信号(辅同步信号A和辅同步信号B)。此时，2个主同步信号对应于2个符号间隔集合(符号间隔集合A和符号间隔集合B)，2个主同步信号中的每个主同步信号对应于所述2个符号间隔集合中的一个符号间隔集合，主同步信号A对应于符号间隔集合A，主同步信号B对应于符号间隔集合B。每个符号间隔集合包括一个主同步信号与所述2个辅同步信号之间的2个符号间隔，即符号间隔集合A包括2个符号间隔(主同步信号A与辅同步信号A的符号间隔A1，主同步信号A与辅同步信号B的符号间隔A2)，符号间隔集合B包括2个符号间隔(主同步信号B与辅同步信号A的符号间隔B1，主同步信号B与辅同步信号B的符号间隔B2)。符号间隔集合A和符号间隔集合B之间不包含相同的符号间隔，即符号间隔A1不等于符号间隔B1，且符号间隔A1不等于符号间隔B2，且符号间隔A2不等于符号间隔B1，且符号间隔A2不等于符号间隔B2。
需要指出的是，同步信号块中还可以包括PBCH。
以M＝2，N＝2，且同步信号块中包括2个PBCH为例，参照图5a至图9d，图5a至图9d为同步信号块的结构示意图。
如图5a至图5o所示出的，图5a至图5o示出的S-SSB中，2个主同步信号S-PSS映射在连续的符号上，以图5a为例，图5a中的S-SSB中，第一符号位置和第二符号位置上映射有S-PSS，第三符号位置和第五符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{1,3}，第二符号位置上的S-PSS上对应的符号间隔集合为{0,2}，即第一符号位置上的S-PSS上对应的符号间隔集合与第二符号位置上的S-PSS上对应的符号间隔集合不包含相同的符号间隔。
以图5d为例，图5d中的S-SSB中，第二符号位置和第三符号位置上映射有S-PSS，第一符号位置和第五符号位置上映射有S-SSS，此时，第二符号位置上的S-PSS上对应的符号间隔集合为{0,2}，而第三符号位置上的S-PSS上对应的符号间隔集合为{1,1}，此时第一符号位置上的S-PSS上对应的符号间隔集合与第二符号位置上的S-PSS上对应的符号间隔集合之间不包含相同的符号间隔。
需要指出的是，一些实施例中，所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，而一个符号间隔集合内可以包括相同的符号间隔。
如图6a至图6h所示出的，图6a至图6h示出的S-SSB中，2个主同步信号S-PSS之 间的符号间隔为1，以图6a为例，图6a中的S-SSB中，第一符号位置和第三符号位置上映射有S-PSS，第四符号位置和第五符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{2，3}，第三符号位置上的S-PSS上对应的符号间隔集合为{0，1}，即第一符号位置上的S-PSS上对应的符号间隔集合与第三符号位置上的S-PSS上对应的符号间隔集合不包含相同的符号间隔。
如图7a至图7i所示出的，图7a至图7i示出的S-SSB中，2个主同步信号S-PSS之间的符号间隔为2，以图7a为例，图7a中的S-SSB中，第一符号位置和第四符号位置上映射有S-PSS，第五符号位置和第六符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{3，4}，第四符号位置上的S-PSS上对应的符号间隔集合为{0，1}，即第一符号位置上的S-PSS上对应的符号间隔集合与第四符号位置上的S-PSS上对应的符号间隔集合不包含相同的符号间隔。
如图8a至图8c所示出的，图8a至图8c示出的S-SSB中，2个主同步信号S-PSS之间的符号间隔为3，以图8a为例，图8a中的S-SSB中，第一符号位置和第五符号位置上映射有S-PSS，第二符号位置和第三符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0，1}，第五符号位置上的S-PSS上对应的符号间隔集合为{2，1}，即第一符号位置上的S-PSS上对应的符号间隔集合与第五符号位置上的S-PSS上对应的符号间隔集合不包含相同的符号间隔。
如图9a至图9d所示出的，图9a至图9d示出的S-SSB中，2个主同步信号S-PSS之间的符号间隔为4，以图9a为例，图9a中的S-SSB中，第一符号位置和第六符号位置上映射有S-PSS，第二符号位置和第三符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0，1}，第六符号位置上的S-PSS上对应的符号间隔集合为{3，2}，即第一符号位置上的S-PSS上对应的符号间隔集合与第六符号位置上的S-PSS上对应的符号间隔集合不包含相同的符号间隔。
在一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
一些实施例中，在时域的维度上，所述M个主同步信号占用的符号位置在所述N个辅同步信号占用的符号位置之前，换一种的表述方式，同步信号块中所述M个主同步信号比N个辅同步信号在时域上映射的符号位置更靠前。
由于第二终端设备需要按照时域的先后顺序对接收到的同步信号块中的同步信号进行滑窗检测，且需要先检测到同步信号块中的主同步信号后才检测同步信号块中的辅同步信号，如果所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之后，此时，第二终端设备即使先接收到N个辅同步信号，也不能检测N个辅同步信号，而是需要缓存N个辅同步信号的数据，在检测到M个主同步信号后，再检测N个辅同步信号。
一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前，第二终端设备可以先接收到同步信号块中的M个主同步信号，并检测M个主同步信号，在检测完M个主同步信号之后，再检测同步信号块中的N个辅同步信号，不需要缓存额外的数据，降低了第二终端设备的缓存开销。
一些实施例中，如图5a至图5d、图5f、图6a、图6b、图6c以及图7a中示出的，在图5a至图5d、图5f、图6a、图6b、图6c以及图7a中，同步信号块中2个主同步信号占用的符号在2个辅同步信号占用的符号之前。
一些实施例中，在图5e示出的S-SSB中，第二符号位置和第三符号位置上映射有S-PSS，第一符号位置和第六符号位置上映射有S-SSS，第一符号位置上映射的S-SSS在第二符号位置上映射的S-PSS和第三符号位置上映射的S-PSS之前。此时，第二终端设备可以先接收到第一符号位置上映射的S-SSS，但是不检测第一符号位置上映射的S-SSS，而是先缓存第一符号位置上映射的S-SSS对应的数据，之后第二终端设备可以接收到第二符号位置上映射的S-PSS和第三符号位置上映射的S-PSS，并检测第二符号位置上映射的S-PSS和第三符号位置上映射的S-PSS，图5e示出的同步信号块中，第二终端设备需要缓存额外的数据(第一符号位置上映射的S-SSS对应的数据)。
而在图5a中的S-SSB中，第一符号位置和第二符号位置上映射有S-PSS，第三符号位置和第五符号位置上映射有S-SSS，即图5a中的S-SSB中2个主同步信号占用的符号在2个辅同步信号占用的符号之前。此时，第二终端设备可以先接收到同步信号块中的2个主同步信号，并检测这两个主同步信号，在检测完2个主同步信号之后，再检测同步信号块中的2个辅同步信号，不需要缓存额外的数据，降低了第二终端设备的缓存开销。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图5a至图9d示出的同步信号块的结构为例，图5a至图9d示出的同步信号块在时域上占用连续6个符号。
402、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
403、第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数。
404、所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
一些实施例中，第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号和辅同步信号。需要说明的是，第二终端设备检测到的主同步信号的数量可以等于M，也可以小于M，第二终端设备检测到的辅同步信号的数量可以等于N，也可以小于N。
一些实施例中，所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步 信号中每个主同步信号的符号位置，包括：
所述第二终端设备确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
所述第二终端设备确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
一些实施例中，由于同步信号块中的M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，则每一个符号间隔对应于唯一的符号间隔集合，而符号间隔集合又对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中的每个主同步信号与检测到的至少一个辅同步信号中的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中的每个主同步信号具体是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中每个主同步信号的符号位置。
接下来以M等于2，N等于2为例对本实施例进行说明。
在一些实施例中，若第二终端设备检测到同步信号块中的一个主同步信号和一个主同步信号，则第二终端设备检测该主同步信号和该主同步信号之间的符号间隔，由于同步信号块2个主同步信号中的每个主同步信号对应于一个符号间隔集合，2个符号间隔集合中的一个符号间隔集合包括所述2个主同步信号中的一个主同步信号与所述2个辅同步信号之间的2个符号间隔，且所述2个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，则每一个符号间隔对应于唯一的符号间隔集合，而符号间隔集合又对应于唯一的主同步信号，则第二终端设备可以根据检测到的主同步信号与检测到的辅同步信号之间的符号间隔确定所述主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储有同步信号块中2个主同步信号与2个符号位置的对应关系，即第二终端设备知道2个主同步信号中每个主同步信号对应的符号位置，则第二终端设备可以根据2个主同步信号与2个符号位置的对应关系确定检测到的主同步信号的符号位置。
若第二终端设备检测到同步信号块中的1主同步信号和2个辅同步信号，则可以根据该检测到的主同步信号与检测到的2个辅同步信号中的一个辅同步信号的符号间隔确定主同步信号的符号位置。
若第二终端设备检测到同步信号块中的2个主同步信号和2个辅同步信号，则可以根据2个主同步信号中的一个主同步信号与检测到的2个辅同步信号中的一个辅同步信号的符号间隔确定一个主同步信号的符号位置，类似的，第二终端可以根据2个主同步信号中的另一个主同步信号与检测到的2个辅同步信号中的另一个辅同步信号的符号间隔确定另一个主同步信号的符号位置。
举例说明，以图5a示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为1，由于图5a中的同步信号块中只有第一符号位置的S-PSS和第三符号位置的S-SSS之间的符号间隔为1，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为0，由于图5a中的同步信号块中只有第二符号位置的S-PSS和第三符号位置的S-SSS之间的符号间隔为0，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为2，由于图5a中的同步信号块中只有第二符号位置的S-PSS和第五符号位置的S-SSS之间的符号间隔为2，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为3，由于图5a中的同步信号块中只有第一符号位置的S-PSS和第五符号位置的S-SSS之间的符号间隔为3，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
以图5d示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为0，由于图5d中的同步信号块中只有第二符号位置的S-PSS和第一符号位置的S-SSS之间的符号间隔为0，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为1，由于图5d中的同步信号块中只有第三符号位置的S-PSS和第一符号位置的S-SSS之间的符号间隔为1，或者第三符号位置的S-PSS和第五符号位置的S-SSS之间的符号间隔为1，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为2，由于图5d中的同步信号块中只有第二符号位置的S-PSS和第五符号位置的S-SSS之间的符号间隔为2，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
在另一些实施例中，举例说明，以图5a示出的同步信号块为例，若第二终端设备只检测到同步信号块中的1个S-PSS，则第二网络设备可以分别在该S-PSS之后符号间隔为0、符号间隔为1、符号间隔为2和符号间隔为3的符号位置检测S-SSS，如果在该S-PSS之后符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。如果在该S-PSS之后符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。如果在该S-PSS之后符号间隔为2的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。如果在该S-PSS之后符号间隔为3的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
举例说明，以图5d示出的同步信号块为例，在另一种实施例中，若第二终端设备只检测到同步信号块中的1个S-PSS，则第二网络设备可以分别在该S-PSS之前符号间隔为0、之前符号间隔为1、之后符号间隔为1和之后符号间隔为2的符号位置检测S-SSS，如果在该S-PSS之前符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到 的S-PSS是第二符号位置的S-PSS。如果在该S-PSS之前符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之后符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之后符号间隔为2的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块；第二终端设备检测到主同步信号和辅同步信号，其中，所述主同步信号和所述辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，所述M、N为大于或等于2的正整数；所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，由于每个主同步信号对应的符号间隔集合之间不包含相同的符号间隔数，终端设备可以根据检测到S-PSS和S-SSS之间的符号间隔数准确地判定S-PSS的符号位置。
参照图10，图10为本申请实施例中一种传输同步信号的方法的示意图，如图10所示，本申请实施例提供的一种传输同步信号的方法，包括：
1001、第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同。
一些实施例中，第一终端设备生成同步信号块，同步信号块仅包括M个主同步信号和1个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，M个主同步信号与M个符号位置对应，1个辅同步信号映射到同步信号块的1个符号中。
在一些实施例中，同步信号块仅包括M个主同步信号和1个辅同步信号，其中，M为大于1的正整数。一些实施例中，M个主同步信号与1个辅同步信号之间有M个符号间隔，即M个主同步信号中的每个辅同步信号与1个辅同步信号中之间有1个符号间隔，且由于所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，因此M个主同步信号与1个辅同步信号之间的M个符号间隔均不相同。
以M＝2，N＝1，且同步信号块中包括2个PBCH为例，参照图11a至图15f，图11a至图15f为同步信号块的结构示意图。
如图11a至图11f所示出的，图11a至图11f示出的S-SSB中，1个辅同步信号S-PSS映射在同步信号块的第一符号位置上，以图11a为例，图11a中的S-SSB中，第一符号位置上映射有S-SSS，第二符号位置和第三符号位置上映射有S-PSS。此时，第一符号位置上的S-SSS与2个S-PSS之间存在2个符号间隔，这2个符号间隔不同(分别为0和1)，且第二符号位置上的主同步信号与第一符号位置上的辅同步信号的符号间隔为0，第三符号位置上的主同步信号与第一符号位置上的辅同步信号的符号间隔为1。
如图12a至图12e所示出的，图12a至图12e示出的S-SSB中，1个辅同步信号S-SSS映射在同步信号块的第二符号位置上。以图12a为例，图12a中的S-SSB中，第二符号位置上映射有S-SSS，第三符号位置和第四符号位置上映射有S-PSS。此时，第二符号位置上的S-SSS与2个S-PSS之间存在2个符号间隔，且这2个符号间隔不同(分别为0和1)，且第三符号位置上的主同步信号与第二符号位置上的辅同步信号的符号间隔为0，第四符号位置上的主同步信号与第二符号位置上的辅同步信号的符号间隔为1。
在一些实施例中，所述M个主同步信号占用的符号在所述1个辅同步信号占用的符号之前。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图11a至图15f示出的同步信号块的结构为例，图11a至图15f示出的同步信号块在时域上占用连续5个符号。
1002、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
1003、第二终端设备检测到至少一个主同步信号和一个辅同步信号，其中，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同。
1004、所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
在一些实施例中，同步信号块仅包括M个主同步信号和1个辅同步信号，其中，M为大于1的正整数。一些实施例中，M个主同步信号与1个辅同步信号之间有M个符号间隔，即M个主同步信号中的每个辅同步信号与1个辅同步信号中之间有1个符号间隔，且由于所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，因此M个主同步信号与1个辅同步信号之间的M个符号间隔均不相同，则每一个符号间隔对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中每个主同步信号与检测到的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中每个主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中每个主同步信号的符号位置。
一些实施例中，同步信号块仅包括M个主同步信号和1个辅同步信号，其中，M为大于1的正整数。第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号和辅同步信号。
接下来，以M＝2为例进行说明。
在一些实施例中，若第二终端设备没有检测到同步信号块中的2个主同步信号，则第二终端设备检测失败。
若第二终端设备检测到同步信号块中的1个主同步信号和1个辅同步信号，则第二终端设备检测该主同步信号和辅同步信号之间的符号间隔。一些实施例中，同步信号块中的2个主同步信号与1个辅同步信号的2个符号间隔不同，则每一个符号间隔对应于唯一的主同步信号，则第二终端设备可以根据主同步信号与所述辅同步信号之间的符号间隔确定检测到的主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定检测到的主同步信号的符号位置。
举例说明，以图11a示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为1，由于图11a中的同步信号块中只有第一符号位置的S-SSS和第三符号位置的S-PSS之间的符号间隔为1，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为0，由于图11a中的同步信号块中只有第二符号位置的S-SSS和第三符号位置的S-PSS之间的符号间隔为1，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
在另一种实施例中，以图11a示出的同步信号块为例，若第二终端设备只检测到同步信号块中的1个S-PSS和1个S-SSS，则第二网络设备可以分别在该S-PSS之前符号间隔为0以及符号间隔为1的符号位置检测S-SSS，如果在该S-PSS之前符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之前符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备检测到同步信号块中的2个主同步信号和1个辅同步信号，则可以根据该辅同步信号与检测到的2个主同步信号中的一个主同步信号的符号间隔确定一个主同步信号的符号位置。
可选地，第二终端设备也可以根据检测到的2个主同步信号之间的时域顺序确定主同步信号的符号位置，例如，若第二终端设备检测到第一符号位置的主同步信号和第二符号位置的主同步信号，则第二终端设备可以根据检测到的两个主同步信号在时域上的先后顺序(第一符号位置的主同步信号在第二符号位置的主同步信号之前)，并根据时域上的先后顺序确定检测到的两个主同步信号中时域靠前的主同步信号为第一符号位置的主同步信号，时域靠后的主同步信号为第二符号位置的主同步信号。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意 两个主同步信号与所述1个辅同步信号的符号间隔不同；所述第一终端设备发送所述同步信号块；第二终端设备检测到至少一个主同步信号和一个辅同步信号，其中，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同；所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，由于每个主同步信号对应的符号间隔集合之间不包含相同的符号间隔，终端设备可以根据检测到S-PSS和S-SSS之间的符号间隔准确地判定S-PSS的符号位置。
参照图21，图21为本申请实施例中一种传输同步信号的方法的示意图，如图21所示，本申请实施例提供的一种传输同步信号的方法，包括：
2101、第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应。
一些实施例中，第一终端设备生成同步信号块，同步信号块仅包括1个主同步信号和N个辅同步信号，在时域上，1个主同步信号映射到同步信号块的1个符号中，1个主同步信号与1个符号位置对应，N个辅同步信号映射到同步信号块的N个符号中。
以N＝2，且同步信号块中包括2个PBCH为例，参照图16a至图20f,图16a至图20f为同步信号块的结构示意图。
在一些实施例中，所述1个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图16a至图20f示出的同步信号块的结构为例，图16a至图20f示出的同步信号块在时域上占用连续5个符号。
2102、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
2103、第二终端设备检测到一个主同步信号，其中，所述一个主同步信号属于同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应。
2104、所述第二终端设备根据所述M个主同步信号与M个符号位置的对应关系确定所述一个主同步信号的符号位置。
一些实施例中，若第二终端设备没有检测到同步信号块中的1个主同步信号，则第二终端设备检测失败。
若第二终端设备只检测到同步信号块中的1个主同步信号和1个辅同步信号，由于同 步信号块中只有一个主同步信号，且所述1个主同步信号与1个符号位置对应，则第二终端设备可以直接根据所述1个主同步信号与1个符号位置的对应关系确定检测到的主同步信号的符号位置。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应；所述第一终端设备发送所述同步信号块；第二终端设备检测到一个主同步信号，其中，所述一个主同步信号属于同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应；所述第二终端设备根据所述M个主同步信号与M个符号位置的对应关系确定所述一个主同步信号的符号位置。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，由于主同步信号块中仅包含一个S-PSS，终端设备可以根据检测到S-PSS和符号位置的对应关系准确地判定S-PSS的符号位置。
参照图22，图22为本申请实施例中一种传输同步信号的方法的示意图，如图22所示，本申请实施例提供的一种传输同步信号的方法，包括：
2201、第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数。
一些实施例中，第一终端设备生成同步信号块，同步信号块中包括M个主同步信号和N个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，N个辅同步信号映射到同步信号块的N个符号中。所述M个主同步信号对应M个符号间隔集合，所述M个主同步信号中的每个主同步信号对应于所述M个符号间隔集合中的一个符号间隔集合，且M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔。
在一些实施例中，所述M个符号间隔集合中至少两个符号间隔集合之间包含相同的符号间隔，在一种表述方式中，所述M个符号间隔集合中至少两个符号间隔集合之间的交集不为空集，在另一种表述方式中，所述M个符号间隔集合中至少两个符号间隔集合之间包含重复的符号间隔。
例如，同步信号块中包括2个主同步信号(主同步信号A和主同步信号B)，同步信号块中包括2个辅同步信号(辅同步信号A和辅同步信号B)。此时，2个主同步信号对应于2个符号间隔集合(符号间隔集合A和符号间隔集合B)，2个主同步信号中的每个主同步信号对应于所述2个符号间隔集合中的一个符号间隔集合，主同步信号A对应于符号间隔集合A，主同步信号B对应于符号间隔集合B。每个符号间隔集合包括一个主同步信号与所述2个辅同步信号之间的2个符号间隔，即符号间隔集合A包括2个符号间隔(主同步 信号A与辅同步信号A的符号间隔A1，主同步信号A与辅同步信号B的符号间隔A2)，符号间隔集合B包括2个符号间隔(主同步信号B与辅同步信号A的符号间隔B1，主同步信号B与辅同步信号B的符号间隔B2)。且符号间隔集合A和符号间隔集合B之间包含相同的符号间隔，即符号间隔A1等于符号间隔B1，或符号间隔A1等于符号间隔B2，或符号间隔A2等于符号间隔B1，或符号间隔A2等于符号间隔B2。
以M＝2，N＝2，且同步信号块中包括2个PBCH为例，参照图23a至图26b，图23a至图26b为同步信号块的结构示意图。
如图23a至图23l所示出的，图23a至图23l示出的S-SSB中，2个主同步信号S-PSS映射在连续的符号上，以图23a为例，图23a中的S-SSB中，第一符号位置和第二符号位置上映射有S-PSS，第四符号位置和第五符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{3，4}，第二符号位置上的S-PSS上对应的符号间隔集合为{2,3}，即第一符号位置上的S-PSS上对应的符号间隔集合与第二符号位置上的S-PSS上对应的符号间隔集合包含相同的符号间隔(3)，也就是说第一符号位置上的S-PSS与第四符号位置上的S-SSS之间的符号间隔等于第二符号位置上的S-PSS与第五符号位置上的S-SSS之间的符号间隔。
以图24a为例，图24a中的S-SSB中，第一符号位置和第三符号位置上映射有S-PSS，第二符号位置和第四符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0,2}，而第三符号位置上的S-PSS上对应的符号间隔集合为{0,0}，此时第一符号位置上的S-PSS上对应的符号间隔集合与第二符号位置上的S-PSS上对应的符号间隔集合之间包含相同的符号间隔(0)。
需要指出的是，一些实施例中，所述M个符号间隔集合中任意两个符号间隔集合之间包含相同的符号间隔，而一个符号间隔集合内也可以包括相同的符号间隔。
如图25a至图25f所示出的，图25a至图25f示出的S-SSB中，2个主同步信号S-PSS之间的符号间隔为2，以图25a为例，图25a中的S-SSB中，第一符号位置和第四符号位置上映射有S-PSS，第二符号位置和第五符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0,2}，第四符号位置上的S-PSS上对应的符号间隔集合为{0，1}，即第一符号位置上的S-PSS上对应的符号间隔集合与第四符号位置上的S-PSS上对应的符号间隔集合包含相同的符号间隔(0)。
在另一种实施例中，所述M个符号间隔集合中至少两个符号间隔集合之间不包含相同的符号间隔，在一种表述方式中，所述M个符号间隔集合中至少两个符号间隔集合之间的交集为空集，在另一种表述方式中，所述M个符号间隔集合中至少两个符号间隔集合之间不包含重复的符号间隔。
一些实施例中，所述N个辅同步信号中任意两个辅同步信号的序列不同。
具体的，辅同步信号S-SSS序列c(n)为一个gold序列，其构造基于两个M序列分别以i 1和i 2循环位移相加。其中，i 1和i 2可以采用如下的生成公式生成：
Figure PCTCN2019130549-appb-000001
i 2＝mod(NID1,112)；
其中，NID1为物理层小区识别组，NID1＝(0,…,335)，NID2为在组内的识别，NID2＝(0,…,2)，mod表示取余运算。
而S-SSS序列c(n)可以采用如下的生成公式生成：
c(n)＝mod((x 0(n+i 1)+x 1(n+i 2)),2)；
其中x 0(n)和x 1(n)为M序列，SID＝3*NID1+NID2，SID为侧行链路同步标识，SID＝(0,…1007)。
在一些实施例中，可以用以下公式生成两个不同的S-SSS序列：
c 1(n)＝mod((x 0(n+i 1)+x 1(n+i 2)),2)；
c 2(n)＝mod((x 0(n+i 2)+x 1(n+i 1)),2)；
其中，生成两个M序列x 0(n)和x 1(n)所用到的线性反馈移位寄存器的生成多项式和NR生成SSS的公式相同：
x 0(i+7)＝mod((x 0(i+4)+x 0(i)),2)；
x 1(i+7)＝mod((x 1(i+1)+x 1(i)),2)；
生成多项式的初始值可以是如下的初始值：
[x 0(6) x 0(5) x 0(4) x 0(3) x 0(2) x 0(1) x 0(0)]＝[0 0 0 0 0 0 1]；
[x 1(6) x 1(5) x 1(4) x 1(3) x 1(2) x 1(1) x 1(0)]＝[0 0 0 0 0 0 1]；
需要指出的是，同步信号块中还可以包括PBCH。
在一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图23a至图26b示出的同步信号块的结构为例，图23a至图26b示出的同步信号块在时域上占用连续6个符号。
2202、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
2203、第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数。
2204、所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅同步信号的符号位置；
2205、所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
一些实施例中，第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号和辅同步信号。需要说明的是，第二终端设备检测到的主同步信号的数量可以等于M，也可以小于M，第二终端设备检测到的辅同步信号的数量可以等于N，也可以小于N。
一些实施例中，所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定至少一个辅同步信号中的辅同步信号的序列的符号位置；所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
在所述M个符号间隔集合中至少两个符号间隔集合之间包含相同的符号间隔的场景中，由于N个辅同步信号中任意两个辅同步信号的序列不同，且N个辅同步信号的N个序列与N个符号位置对应，第二终端设备可以根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅同步信号的符号位置，由于每一个辅同步信号与M个主同步信号之间的M个符号间隔不同，则第二终端设备根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述一个辅同步信号与至少一个主同步信号中的一个主同步信号之间的符号间隔确定所述一个主同步信号的符号位置。
接下来以M等于2，N等于2为例对本实施例进行说明。
一些实施例中，第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号和辅同步信号。
在一些实施例中，若第二终端设备没有检测到同步信号块中的2个主同步信号，则第二终端设备检测失败。
若第二终端设备只检测到同步信号块中的1个主同步信号和1个辅同步信号，则第二终端设备检测该检测到的辅同步信号的序列，并根据辅同步信号的序列确定检测到的辅同步信号的符号位置。第二终端设备检测该检测到的辅同步信号与检测到的主同步信号之间的符号间隔，并根据检测到的辅同步信号与检测到的主同步信号的符号间隔确定检测到的主同步信号的符号位置。
举例说明，以图23a示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，第二终端设备检测该S-SSS的序列为S-SSS1的序列，则第二终端设备可以确定检测到的S-SSS为第五符号位置的S-SSS1，若第二终端设备检测该S-PSS和S-SSS1之间的 符号间隔为3，由于图23a中同步信号块中只有第一符号位置的S-PSS和第五符号位置的S-SSS1之间的符号间隔为3，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
在另一种实施例中，举例说明，以图23a示出的同步信号块为例，若第二终端设备只检测到同步信号块中的1个S-PSS，则第二网络设备可以分别在该S-PSS之后符号间隔为2、符号间隔为3和符号间隔为4的符号位置检测S-SSS，如果在该S-PSS之后符号间隔为2的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。如果在该S-PSS之后符号间隔为3的符号位置检测到S-SSS1的序列，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。如果在该S-PSS之后符号间隔为3的符号位置检测到S-SSS2的序列，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。如果在该S-PSS之后符号间隔为4的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
在另一种实施例中，举例说明，以图23a示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为3，图23a中的同步信号块中第一符号位置的S-PSS和第五符号位置的S-SSS之间的符号间隔为3，且第二符号位置的S-PSS和第六符号位置的S-SSS之间的符号间隔为3，则第二终端设备可以检测S-SSS的序列，如果第二终端设备检测到S-SSS1的序列，则可以判定该检测到的S-PSS是第一符号位置的S-PSS，如果第二终端设备检测到S-SSS2的序列，则可以判定该检测到的S-PSS是第二符号位置的S-PSS。
在所述M个符号间隔集合中至少两个符号间隔集合之间不包含相同的符号间隔的场景中，由于同步信号块中的M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合不包含相同的符号间隔，则每一个符号间隔对应于唯一的符号间隔集合，而符号间隔集合又对应于唯一的主同步信号，则第二终端设备可以根据检测到的至少一个主同步信号中的一个主同步信号与检测到的至少一个辅同步信号中的一个辅同步信号之间的符号间隔，确定至少一个主同步信号中的一个主同步信号是同步信号块中的哪一个主同步信号，由于第二终端设备可以预先存储同步信号块中M个主同步信号与M个符号位置的对应关系，则第二终端设备可以根据M个主同步信号与M个符号位置确定至少一个主同步信号中的一个主同步信号的符号位置。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；所述第一终端设备发送所述同步信号块；第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个 辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅同步信号的符号位置；所述第二终端设备根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。通过上述方式，由于N个辅同步信号中任意两个辅同步信号的序列不同，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，即使每个主同步信号对应的符号间隔集合之间包含相同的符号间隔，终端设备也可以根据辅同步信号的序列和符号间隔准确地判定S-PSS的符号位置。
参照图27，图27为本申请实施例中一种传输同步信号的方法的示意图，如图27所示，本申请实施例提供的一种传输同步信号的方法，包括：
2701、第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个符号位置对应，所述M为大于或等于2的正整数。
一些实施例中，第一终端设备生成同步信号块，同步信号块中包括M个主同步信号和N个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，M个主同步信号中任意两个主同步信号的序列不同，即，所述M个主同步信号的M个序列与M个符号位置对应，N个辅同步信号映射到同步信号块的N个符号中。
一些实施例中，所述M个主同步信号中任意两个主同步信号的序列不同。
具体的，S-PSS序列c(n)为一个M序列。例如，可以采用如下的生成公式生成不同序列的S-PSS：
c 1(n)＝x(n+a*NID2)；
c 2(n)＝x(n+b*NID2)；
其中，x(n)为M序列，NID2为在组内的识别，NID2＝(0,…,2)，SID＝3*NID1+NID2，SID为侧行链路同步标识，SID＝(0,…1007)，其中a，b为不同的正整数且取值在0至127之间。
其中，生成两个M序列x(n)所用到的线性反馈移位寄存器的生成多项式可以是如下的生成多项式：
x(i+7)＝mod((x(i+4)+x(i)),2)；
生成多项式的初始值可以是如下的初始值：
[x(6) x(5) x(4) x(3) x(2) x(1) x(0)]＝[1 1 1 0 1 1 0]。
需要指出的是，同步信号块中还可以包括PBCH。
以M＝2，N＝2，且同步信号块中包括2个PBCH为例，参照图28a至图31b，图28a至图31b为同步信号块的结构示意图。
如图28a至图28l所示出的，图28a至图28l示出的S-SSB中，2个主同步信号S-PSS映射在连续的符号上，以图28a为例，图28a中的S-SSB中，第一符号位置上映射有S-PSS1，第二符号位置上映射有S-PSS2,第五符号位置和第六符号位置上映射有S-SSS。
在一些实施例中，所述同步信号块还包括N个主同步信号，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前，N为大于1的正整数。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图28a至图31b示出的同步信号块的结构为例，图28a至图31b示出的同步信号块在时域上占用连续6个符号。
2702、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
2703、第二终端设备检测到至少一个主同步信号，所述至少一个主同步信号属于同步信号块，其中，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数。
2704、所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号的序列以及所述M个主同步信号的M个序列与M个符号位置的对应关系确定所述至少一个主同步信号中的每个主同步信号主同步信号的符号位置。
以M等于2，N等于2为例，一些实施例中，第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号。
在一些实施例中，若第二终端设备没有检测到同步信号块中的M个主同步信号，则第二终端设备检测失败。
若第二终端设备只检测到同步信号块中的1个主同步信号，则第二终端设备检测该检测到的主同步信号的序列，并根据该检测到的主同步信号的序列以及所述2个主同步信号的2个序列与2个符号位置的对应关系确定检测到的主同步信号的符号位置。
举例说明，以图28a示出的同步信号块为例，第二终端设备检测到一个S-PSS，且第二终端设备检测到S-PSS1的序列，则可以判定该检测到的S-PSS是第一符号位置的S-PSS，如果第二终端设备检测到S-PSS2的序列，则可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备检测到同步信号块中的2个主同步信号，则第二终端设备检测2个主同步信号的序列，并根据2个主同步信号中每个主同步信号的序列确定2个主同步信号的符号位置。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数；所述第一终 端设备发送所述同步信号块；第二终端设备检测到至少一个主同步信号，所述至少一个主同步信号属于同步信号块，其中，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数；所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号的序列以及所述M个主同步信号的M个序列与M个符号位置的对应关系确定所述至少一个主同步信号中的每个主同步信号主同步信号的符号位置。通过上述方式，由于M个主同步信号中任意两个主同步信号的序列不同，终端设备也可以根据主同步信号的序列和符号位置的对应关系准确地判定主同步信号的符号位置。
参照图32，图32为本申请实施例中一种传输同步信号的方法的示意图。该示意图从第一终端设备和第二终端设备之间交互的角度，描述了传输同步信号的过程。如图32所示，本申请实施例提供的一种传输同步信号的方法，包括：
3201、第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后。
一些实施例中，第一终端设备生成同步信号块，同步信号块中包括M个主同步信号和N个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，N个辅同步信号映射到同步信号块的N个符号中。所述M个主同步信号对应M个符号间隔集合，所述M个主同步信号中的每个主同步信号对应于所述M个符号间隔集合中的一个符号间隔集合，且M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔。
一些实施例中，所述M个符号间隔集合中任意两个符号间隔集合相同。
例如，同步信号块中包括2个主同步信号(主同步信号A和主同步信号B)，同步信号块中包括2个辅同步信号(辅同步信号A和辅同步信号B)。此时，2个主同步信号对应于2个符号间隔集合(符号间隔集合A和符号间隔集合B)，2个主同步信号中的每个主同步信号对应于所述2个符号间隔集合中的一个符号间隔集合，主同步信号A对应于符号间隔集合A，主同步信号B对应于符号间隔集合B。每个符号间隔集合包括一个主同步信号与所述2个辅同步信号之间的2个符号间隔，即符号间隔集合A包括2个符号间隔(主同步信号A与辅同步信号A的符号间隔A1，主同步信号A与辅同步信号B的符号间隔A2)，符号间隔集合B包括2个符号间隔(主同步信号B与辅同步信号A的符号间隔B1，主同步信号B与辅同步信号B的符号间隔B2)。且符号间隔集合A和符号间隔集合B相同，即符号 间隔A1等于符号间隔B1且符号间隔A2等于符号间隔B2，或符号间隔A1等于符号间隔B2且符号间隔A1等于符号间隔B2。2个主同步信号之间的符号间隔与2个辅同步信号之间的符号间隔不同，即，主同步信号A与主同步信号B之间的符号间隔C1与辅同步信号A与辅同步信号B之间的符号间隔C2相同。
一些实施例中，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后。
在一些实施例中，时域上，M个主同步信号中一半数量的主同步信号在N个辅同步信号之前，M个主同步信号中除了上述一半数量的主同步信号的另一半数量的主同步信号在N个辅同步信号之后。
在一些实施例中，时域上，N个辅同步信号中一半数量的辅同步信号在M个主同步信号之前，N个辅同步信号中除了上述一半数量的辅同步信号的另一半数量的辅同步信号在M个主同步信号之后。
需要指出的是，同步信号块中还可以包括PBCH。
以M＝2，N＝2，且同步信号块中包括2个PBCH为例，参照图33a至图33l，图33a至图33l为同步信号块的结构示意图。
以图33a为例，图33a中的S-SSB中，第二符号位置和第三符号位置上映射有S-PSS，第一符号位置和第四符号位置上映射有S-SSS，此时，第二符号位置上的S-PSS上对应的符号间隔集合为{0,1}，第三符号位置上的S-PSS上对应的符号间隔集合为{0,1}，即第二符号位置上的S-PSS上对应的符号间隔集合与第三符号位置上的S-PSS上对应的符号间隔集合相同。而第一符号位置的S-SSS在第二符号位置和第三符号位置上的S-PSS之前，第四符号位置的S-SSS在第二符号位置和第三符号位置上的S-PSS之后。
以图33g为例，图33g中的S-SSB中，第一符号位置和第五符号位置上映射有S-PSS，第二符号位置和第四符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0,2}，第五符号位置上的S-PSS上对应的符号间隔集合为{2,0}，即第一符号位置上的S-PSS上对应的符号间隔集合与第五符号位置上的S-PSS上对应的符号间隔集合相同。而第一符号位置的P-SSS在第二符号位置和第四符号位置上的S-SSS之前，第五符号位置的S-PSS在第二符号位置和第四符号位置上的S-SSS之后。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图33a至图33l示出的同步信号块的结构为例，图33a至图33l示出的同步信号块在时域上占用连续6个符号。
3202、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
3203、第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，所述至少一 个主同步信号和至少一个辅同步信号属于同一个同步信号块，其中，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后。
3204、所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔以及时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述一个主同步信号辅同步信号之前或主同步信号在所述一个主同步信号辅同步信号之后。
以M等于2，N等于2为例，一些实施例中，第一终端设备发送所述同步信号块之后，第二终端设备盲检同步信号块中的主同步信号和辅同步信号。
在一些实施例中，若第二终端设备没有检测到同步信号块中的2个主同步信号，则第二终端设备检测失败。
若第二终端设备只检测到同步信号块中的1个主同步信号和1个辅同步信号，则第二终端设备检测该主同步信号和辅同步信号之间的符号间隔以及时域顺序，所述时域顺序包括所述主同步信号在所述辅同步信号之前或所述主同步信号在所述辅同步信号之后。
举例说明，以图33a示出的同步信号块为例，第二终端设备检测到一个S-PSS和一个S-SSS，若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为1，由于图33a中的同步信号块中第二符号位置的S-PSS和第四符号位置的S-SSS之间的符号间隔为1，且第三符号位置的S-PSS和第一符号位置的S-SSS之间的符号间隔为1，第二终端设备检测该主同步信号和辅同步信号之间时域顺序，若时域上，S-PSS在S-SSS之前，则第二终端设备可以确定该S-PSS为第二符号位置的S-PSS，若S-PSS在S-SSS之后，则第二终端设备可以确定该S-PSS为第三符号位置的S-PSS。
若第二终端设备检测该S-PSS和S-SSS之间的符号间隔为0，由于图33a中的同步信号块中第二符号位置的S-PSS和第一符号位置的S-SSS之间的符号间隔为0，且第三符号位置的S-PSS和第四符号位置的S-SSS之间的符号间隔为0，第二终端设备检测该主同步信号和辅同步信号之间时域顺序，若时域上，S-PSS在S-SSS之前，则第二终端设备可以确定该S-PSS为第三符号位置的S-PSS，若S-PSS在S-SSS之后，则第二终端设备可以确定该S-PSS为第二符号位置的S-PSS。
在另一种实施例中，举例说明，以图33a示出的同步信号块为例，若第二终端设备检测到同步信号块中的1个S-PSS，则第二网络设备可以分别在该S-PSS之前符号间隔为0、在该S-PSS之前符号间隔为1，在该S-PSS之后符号间隔为0以及在该S-PSS之后符号间隔为1的符号位置检测S-SSS，如果在该S-PSS之前符号间隔为0的符号位置检测到S-SSS， 则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。如果在该S-PSS之前符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之后符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之后符号间隔为1的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第二符号位置的S-PSS。
若第二终端设备只检测到同步信号块中的1个主同步信号和2个辅同步信号，则可以根据该主同步信号与检测到的2个辅同步信号中的一个辅同步信号的符号间隔和时域顺序确定主同步信号的符号位置。
若第二终端设备检测到同步信号块中的2个主同步信号和2个辅同步信号，则可以根据2个主同步信号中的一个主同步信号与检测到的2个辅同步信号中的一个辅同步信号的符号间隔和时域顺序确定一个主同步信号的符号位置。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；所述第一终端设备发送所述同步信号块；第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，所述至少一个主同步信号和至少一个辅同步信号属于同一个同步信号块，其中，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔以及时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述一个主同步信号辅同步信号之前或主同步信号在所述一个主同步信号辅同步信号之后。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，即使每个主同步信号对应的符号间隔集合相同，终端设备也可以根据检测到S-PSS和S-SSS之间的符号间隔和时 域顺序准确地判定S-PSS的符号位置。
参照图34，图34为本申请实施例中一种传输同步信号的方法的示意图。该示意图从第一终端设备和第二终端设备之间交互的角度描述了传输同步信号的过程。如图34所示，本申请实施例提供的一种传输同步信号的方法，包括：
3401、第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，其中，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同。
一些实施例中，第一终端设备生成同步信号块，同步信号块中包括M个主同步信号和1个辅同步信号，在时域上，M个主同步信号映射到同步信号块的M个符号中，1个辅同步信号映射到同步信号块的1个符号中。所述M个主同步信号对应M个符号间隔集合，所述M个主同步信号中的每个主同步信号对应于所述M个符号间隔集合中的一个符号间隔集合，且M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔。
一些实施例中，所述M个符号间隔集合中任意两个符号间隔集合相同。
例如，同步信号块中包括2个主同步信号(主同步信号A和主同步信号B)，同步信号块中包括1个辅同步信号(辅同步信号A)。此时，2个主同步信号对应于2个符号间隔集合(符号间隔集合A和符号间隔集合B)，2个主同步信号中的每个主同步信号对应于所述2个符号间隔集合中的一个符号间隔集合，主同步信号A对应于符号间隔集合A，主同步信号B对应于符号间隔集合B。每个符号间隔集合包括一个主同步信号与所述1个辅同步信号之间的1个符号间隔，即符号间隔集合A包括1个符号间隔(主同步信号A与辅同步信号A的符号间隔A1)，符号间隔集合B包括1个符号间隔(主同步信号B与辅同步信号A的符号间隔B1)。且符号间隔集合A和符号间隔集合B相同，即符号间隔A1等于符号间隔B1。
需要指出的是，同步信号块中还可以包括PBCH。
以M＝2，且同步信号块中包括2个PBCH为例，参照图35a至图35d，图35a至图35d为同步信号块的结构示意图。
以图35a为例，图35a中的S-SSB中，第一符号位置和第三符号位置上映射有S-PSS，第二符号位置上映射有S-SSS，此时，第一符号位置上的S-PSS上对应的符号间隔集合为{0}，第三符号位置上的S-PSS上对应的符号间隔集合为{0}，即第一符号位置上的S-PSS上对应的符号间隔集合与第三符号位置上的S-PSS上对应的符号间隔集合相同。虽然第二符号位置上的S-SSS与2个S-PSS之间的2个符号间隔相同，但在时域上，第一符号位置的S-PSS在第二符号位置的S-SSS之前，第三符号位置的S-PSS在第二符号位置的S-SSS之后。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
一些实施例中，以图35a至图35d示出的同步信号块的结构为例，图35a至图35d示出的同步信号块在时域上占用连续5个符号。
3402、所述第一终端设备发送所述同步信号块。
一些实施例中，第一终端设备生成同步信号块之后，需要向第二终端设备发送所述同步信号块。
3403、第二终端设备检测到至少一个主同步信号和一个辅同步信号，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，其中，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
3404、所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述辅同步信号之间的时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述辅同步信号之前或主同步信号在所述辅同步信号之后。
一些实施例中，第二终端设备检测到主同步信号的数量可以小于M，也可以等于M。
一些实施例中，若第二终端设备只检测到同步信号块中的1个主同步信号和1个辅同步信号，则第二终端设备可以根据所述主同步信号与所述辅同步信号时域上的先后顺序确定所述主同步信号的符号位置。
以图35a所示出的S-SSB为例，图35a示出的S-SSB中，第二符号位置上映射有S-SSS，第一符号位置和第三符号位置上映射有S-PSS。此时，第二符号位置上的S-SSS与2个S-PSS之间存在2个符号间隔，且这2个符号间隔相同(分别为0和0)。虽然图35a中第二符号位置上的S-SSS与2个S-PSS之间的2个符号间隔相同，但在时域上，第一符号位置的S-PSS在第二符号位置的S-SSS之前，第三符号位置的S-PSS在第二符号位置的S-SSS之后。若第二终端设备检测到一个S-PSS和一个S-SSS，且第二终端设备检测该S-PSS和S-SSS之间的符号间隔为0，第二终端设备检测到该S-SSS在该S-PSS之前，则第二终端设备可以确定检测到的S-PSS为第三符号位置的S-PSS，第二终端设备检测到该S-SSS在该S-PSS之后，则第二终端设备可以确定检测到的S-PSS为第一符号位置的S-PSS。
在另一种实施例中，在图35a示出的S-SSB中，若第二终端设备只检测到同步信号块中的1个S-PSS，则第二网络设备可以分别在该S-PSS之前符号间隔为0以及在该S-PSS之后符号间隔为0的符号位置检测S-SSS，如果在该S-PSS之前符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第三符号位置的S-PSS。如果在该S-PSS之后符号间隔为0的符号位置检测到S-SSS，则第二终端设备可以判定该检测到的S-PSS是第一符号位置的S-PSS。
其次，一些实施例中，第一终端设备生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M 个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；所述第一终端设备发送所述同步信号块；第二终端设备检测到至少一个主同步信号和一个辅同步信号，所述至少一个主同步信号和一个辅同步信号属于同一个同步信号块，其中，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述辅同步信号之间的时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述辅同步信号之前或主同步信号在所述辅同步信号之后。通过上述方式，在终端设备只检测到一个S-PSS和一个S-SSS的情况下，即使每个主同步信号对应的符号间隔集合相同，终端设备也可以根据检测到S-PSS和S-SSS之间的时域顺序准确地判定S-PSS的符号位置。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
为便于更好的实施本发明实施例的上述方案，下面还提供用于实施上述方案的相关装置。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601和发送模块3602，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
发送模块3602，用于发送所述同步信号块。
在本申请的一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在本申请的一些实施例中，所述同步信号块在时域上占用连续的符号。
本申请实施例还提供一种终端设备，参照图37，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合 中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
处理模块3702，用于根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
在本申请的一些实施例中，所述处理模块3702，用于确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
在本申请的一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在本申请的一些实施例中，所述同步信号块在时域上占用连续的符号。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601，用于生成同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，其中，所述M的数值为1且所述N为大于1的正整数，或，所述M为大于1的正整数且所述N的数值为1，且当所述M为大于1的正整数且所述N的数值为1时，所述M个主同步信号中的任意两个主同步信号与1个辅同步信号的符号间隔不同，所述M个主同步信号与M个符号位置对应；
发送模块3602，用于发送所述同步信号块。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号和一个辅同步信号，其中，所述至少一个主同步信号和所述一个辅同步信号属于同一个同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，且所述M个主同步信号中的任意两个主同步信号与所述1个辅同步信号的符号间隔不同；
处理模块3702，用于根据所述至少一个主同步信号中的每个主同步信号与所述一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到一个主同步信号，其中，所述一个主同步信号属于同步信号块，所述同步信号块仅包括M个主同步信号和N个辅同步信号，所述M的数值为1且所述N为大于1的正整数，所述M个主同步信号与M个符号位置对应；
处理模块3702，用于根据所述M个主同步信号与M个符号位置的对应关系确定所述一个主同步信号的符号位置。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的 序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；
发送模块3602，用于发送所述同步信号块。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述N个辅同步信号中任意两个辅同步信号的序列不同，所述N个辅同步信号的N个序列与N个符号位置对应，所述M、N为大于或等于2的正整数；
处理模块3702，用于根据所述至少一个辅同步信号中的辅同步信号的序列以及所述N个辅同步信号的N个序列与N个预设符号位置的对应关系确定所述至少一个辅同步信号中的辅同步信号的符号位置；根据所述至少一个辅同步信号中的辅同步信号的符号位置以及所述至少一个辅同步信号中的辅同步信号与所述至少一个主同步信号中的每个主同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601，用于生成同步信号块，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个符号位置对应，所述M为大于或等于2的正整数；
发送模块3602，用于发送所述同步信号块。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号，所述至少一个主同步信号属于同步信号块，其中，所述同步信号块包括M个主同步信号，其中，所述M个主同步信号中任意两个主同步信号的序列不同，所述M个主同步信号的M个序列与M个预设符号位置对应，所述M为大于或等于2的正整数；
处理模块3702，用于根据所述至少一个主同步信号中的每个主同步信号的序列以及所述M个主同步信号的M个序列与M个符号位置的对应关系确定所述至少一个主同步信号中的每个主同步信号主同步信号的符号位置。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中 N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
发送模块3602，用于发送所述同步信号块。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号和至少一个辅同步信号，所述至少一个主同步信号和至少一个辅同步信号属于同一个同步信号块，其中，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同，所述M、N为大于或等于2的正整数，所述M、N为偶数，所述M个主同步信号中M/2个主同步信号在所述N个辅同步信号之前，且所述M个主同步信号中除所述M/2个主同步信号之外的M/2个主同步信号在所述N个辅同步信号之后，或所述N个辅同步信号中N/2个辅同步信号在所述M个主同步信号之前，且所述N个辅同步信号中除所述N/2个辅同步信号之外的N/2个辅同步信号在所述M个主同步信号之后；
处理模块3702，用于根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔以及时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述一个主同步信号辅同步信号之前或主同步信号在所述一个主同步信号辅同步信号之后。
本申请实施例提供一种终端设备，如图36所示，终端设备3600包括：
处理模块3601，用于生成同步信号块，所述同步信号块仅包括M个主同步信号和1个辅同步信号，其中，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
发送模块3602，用于发送所述同步信号块。
本申请实施例提供一种终端设备，如图37所示，终端设备3700包括：
接收模块3701，用于检测到至少一个主同步信号和辅同步信号，所述至少一个主同步信号和所述辅同步信号属于同一个同步信号块，其中，所述同步信号块仅包括M个主同步信号和1个辅同步信号，所述M为大于1的正整数，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述1个辅同步信号之间的1个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合相同；
处理模块3702，用于根据所述至少一个主同步信号中的每个主同步信号与所述辅同步信号之间的时域顺序确定所述至少一个主同步信号中的每个主同步信号的符号位置，所述时域顺序包括主同步信号在所述辅同步信号之前或主同步信号在所述辅同步信号之后。
在一些实施例中，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
在一些实施例中，所述同步信号块在时域上占用连续的符号。
需要说明的是，上述装置各模块/单元之间的信息交互、执行过程等内容，由于与本发明方法实施例基于同一构思，其带来的技术效果与本发明方法实施例相同，具体内容可参见本发明前述所示的方法实施例中的叙述，此处不再赘述。
本发明实施例还提供一种计算机存储介质，其中，该计算机存储介质存储有程序，该程序执行包括上述方法实施例中记载的部分或全部步骤。
如图38所示，为本申请实施例的又一种设备的结构示意图，该设备为终端设备，该终端设备可以包括：处理器131(例如CPU)、存储器132、发送器134和接收器133；发送器134和接收器133耦合至处理器131，处理器131控制发送器134的发送动作和接收器133的接收动作。存储器132可能包含高速RAM存储器，也可能还包括非易失性存储器NVM，例如至少一个磁盘存储器，存储器132中可以存储各种指令，以用于完成各种处理功能以及实现本申请实施例的方法步骤。可选的，本申请实施例涉及的终端设备还可以包括：电源135、通信总线136以及通信端口137中的一个或多个。接收器133和发送器134可以集成在终端设备的收发器中，也可以为终端设备上分别独立的收、发天线。通信总线136用于实现元件之间的通信连接。上述通信端口137用于实现终端设备与其他外设之间进行连接通信。
在一些实施例中，终端设备中的发送器134可以执行图36中发送模块执行的动作，终端设备中的处理器131可以执行图36或图37中处理模块执行的动作，终端设备中的接收器133可以执行图37中接收模块执行的动作，其实现原理和技术效果类似，在此不再赘述。
在一些实施例中，上述存储器132用于存储计算机可执行程序代码，程序代码包括指令；当处理器131执行指令时，指令使处理器131执行上述实施例中终端设备的处理模块执行的动作，使发送器134执行上述实施例中终端设备的发送模块的动作，其实现原理和技术效果类似，在此不再赘述。
本申请还提供了一种芯片系统，该芯片系统包括处理器，用于支持上述终端设备实现其所涉及的功能，例如，例如接收或处理上述方法实施例中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述 计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (14)

  1. 一种传输同步信号的方法，其特征在于，包括：
    第一终端设备生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
    所述第一终端设备发送所述同步信号块。
  2. 根据权利要求1所述的方法，其特征在于，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
  3. 根据权利要求1或2所述的方法，其特征在于，所述同步信号块在时域上占用连续的符号。
  4. 一种传输同步信号的方法，其特征在于，包括：
    第二终端设备检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
    所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
  5. 根据权利要求4所述的方法，其特征在于，所述第二终端设备根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置，包括：
    所述第二终端设备确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
    所述第二终端设备确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
  6. 根据权利要求5所述的方法，其特征在于，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
  7. 根据权利要求4至6任一所述的方法，其特征在于，所述同步信号块在时域上占用连续的符号。
  8. 一种终端设备，其特征在于，包括：
    处理模块，用于生成同步信号块，所述同步信号块包括M个主同步信号和N个辅同步 信号，其中，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
    发送模块，用于发送所述同步信号块。
  9. 根据权利要求8所述的终端设备，其特征在于，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
  10. 根据权利要求8或9所述的终端设备，其特征在于，所述同步信号块在时域上占用连续的符号。
  11. 一种终端设备，其特征在于，包括：
    接收模块，用于检测到至少一个主同步信号和至少一个辅同步信号，其中，所述至少一个主同步信号和所述至少一个辅同步信号属于同一个同步信号块，所述同步信号块包括M个主同步信号和N个辅同步信号，所述M个主同步信号中的每个主同步信号对应于一个符号间隔集合，M个符号间隔集合中的一个符号间隔集合包括所述M个主同步信号中的一个主同步信号与所述N个辅同步信号之间的N个符号间隔，且所述M个符号间隔集合中任意两个符号间隔集合之间不包含相同的符号间隔，所述M、N为大于或等于2的正整数；
    处理模块，用于根据所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔确定所述至少一个主同步信号中每个主同步信号的符号位置。
  12. 根据权利要求11所述的终端设备，其特征在于，
    所述处理模块，用于确定所述至少一个主同步信号中的每个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔；
    确定所述至少一个主同步信号中的一个主同步信号与所述至少一个辅同步信号中的一个辅同步信号之间的符号间隔所属的符号间隔集合对应的主同步信号的符号位置为所述一个主同步信号的符号位置，其中，所述符号间隔集合属于所述M个符号间隔集合。
  13. 根据权利要求11或12所述的终端设备，其特征在于，所述M个主同步信号占用的符号在所述N个辅同步信号占用的符号之前。
  14. 根据权利要求11至13任一所述的终端设备，其特征在于，所述同步信号块在时域上占用连续的符号。
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