WO2018202184A1 - 同步信号的发送方法、同步信号的接收方法及相关设备 - Google Patents

同步信号的发送方法、同步信号的接收方法及相关设备 Download PDF

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Publication number
WO2018202184A1
WO2018202184A1 PCT/CN2018/085740 CN2018085740W WO2018202184A1 WO 2018202184 A1 WO2018202184 A1 WO 2018202184A1 CN 2018085740 W CN2018085740 W CN 2018085740W WO 2018202184 A1 WO2018202184 A1 WO 2018202184A1
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Prior art keywords
sequence
synchronization signal
gold
modn
local
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PCT/CN2018/085740
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English (en)
French (fr)
Inventor
曲秉玉
刘建琴
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华为技术有限公司
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Priority to BR112019023067-0A priority Critical patent/BR112019023067B1/pt
Priority to AU2018263130A priority patent/AU2018263130B9/en
Priority to JP2019560751A priority patent/JP7285787B2/ja
Priority to EP18793833.7A priority patent/EP3611853B9/en
Priority to EP21179628.9A priority patent/EP3952148B1/en
Priority to EP23165908.7A priority patent/EP4250604A3/en
Priority to CN201880020967.2A priority patent/CN110463088B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2018202184A1 publication Critical patent/WO2018202184A1/zh
Priority to US16/411,804 priority patent/US10652843B2/en
Priority to PH12019502475A priority patent/PH12019502475A1/en
Priority to ZA2019/07884A priority patent/ZA201907884B/en
Priority to US16/715,487 priority patent/US11330539B2/en
Priority to US17/658,534 priority patent/US11991650B2/en
Priority to JP2023010314A priority patent/JP7502492B2/ja

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0005Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0073Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0076Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J13/00Code division multiplex systems
    • H04J13/0007Code type
    • H04J13/0022PN, e.g. Kronecker
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/06Synchronising arrangements
    • H04J3/0635Clock or time synchronisation in a network
    • H04J3/0638Clock or time synchronisation among nodes; Internode synchronisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • H04L27/2655Synchronisation arrangements
    • H04L27/2668Details of algorithms
    • H04L27/2673Details of algorithms characterised by synchronisation parameters
    • H04L27/2675Pilot or known symbols

Definitions

  • the present application relates to the field of communications, and in particular, to a method for transmitting a synchronization signal, a method for receiving a synchronization signal, and related devices.
  • the downlink base station performs downlink time and frequency coarse synchronization by using a synchronization signal, where the synchronization signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (secondary). Synchronization signal, SSS).
  • the user equipment can receive the primary synchronization signal and the secondary synchronization signal to implement synchronization and obtain cell identification information.
  • the user equipment first detects the primary synchronization signal to determine the central frequency point, and basic time-frequency synchronization information, or partial cell identification information, and then uses the secondary synchronization signal to obtain the cell identification information.
  • the number of possible different primary sync signals is usually small, for example three, or one.
  • the 3rd generation partnership project (3GPP) discusses the use of the longest linear feedback shift register sequence to generate the primary synchronization signal, while the secondary synchronization signal can also be generated using the scrambled m-sequence or Gold sequence.
  • the second sync signal, the m sequence is an abbreviation for the longest linear shift register sequence.
  • the primary synchronization signal sequence and the secondary synchronization signal sequence are different.
  • the sequence length of the new synchronization signal in the fifth generation mobile communication technology may be greater than or equal to the synchronization signal sequence length in long term evolution (LTE).
  • the transmission of the synchronization signal is implemented by orthogonal frequency division multiplexing (OFDM). That is, the primary synchronization signal sequence is mapped to the subcarriers of the OFDM system allocated to the primary synchronization signal, and the secondary synchronization signal sequence is mapped to the subcarriers of the OFDM system allocated to the secondary synchronization signal.
  • OFDM orthogonal frequency division multiplexing
  • the primary synchronization signal and the secondary synchronization signal occupy one OFDM symbol, and occupy the same bandwidth, both of which are N, and N is an integer, for example, 127.
  • the network device detects the primary synchronization signal, the secondary synchronization signals of other cells or the local cell may interfere with the detection of the primary synchronization signal.
  • the embodiment of the present application provides a method for transmitting a synchronization signal and a method for receiving a synchronization signal, which are used to reduce correlation between a secondary synchronization signal and a primary synchronization signal, and reduce interference received by the primary synchronization signal.
  • a first aspect of the present application provides a method for transmitting a synchronization signal, including: a network device generating a first synchronization signal sequence obtained by a first m sequence, and a second synchronization signal sequence obtained by a first Gold sequence,
  • the first Gold sequence is generated by a second m sequence and a third m sequence, a generator polynomial of the first m sequence is the same as a generator polynomial of the second m sequence, the first m sequence, the second m sequence
  • the length of the third m sequence is N, N is a positive integer greater than 1;
  • the network device maps the first synchronization signal sequence to M subcarriers of the first time unit to obtain a first synchronization signal, Mapping the second synchronization signal sequence to the M subcarriers of the second time unit to obtain a second synchronization signal, where M is a positive integer greater than 1;
  • the network device sends the first synchronization signal and the first Two sync signals.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the first synchronization signal sequence is a sequence obtained by a first m sequence, and the first m sequence ⁇ c( The generator polynomial of n)
  • the embodiment of the present application defines the first synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • the second synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is a second m sequence ⁇ f 1 (n)
  • n 0,1,2,...,N-1 ⁇ and third m-sequence ⁇ f 2 (n)
  • n 0,1,2,...,N -1 ⁇ generation
  • the second synchronization signal sequence is that f 1 (n) is the second m sequence, and f 2 (n) is the third m sequence.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the second synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a second aspect of the embodiments of the present application provides a method for receiving a synchronization signal, including: a user equipment receives a first received signal and a second received signal; and the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a local synchronization signal sequence and a second local synchronization signal sequence, the first local synchronization signal sequence being a sequence obtained by the first m sequence, and the second local synchronization signal sequence being a sequence obtained by the first Gold sequence,
  • the first Gold sequence is generated by a second m sequence and a third m sequence, the generator polynomial of the first m sequence is the same as the generator polynomial of the second m sequence, the first m sequence, the second m sequence,
  • the length of the third m sequence is N, N is a positive integer greater than 1; the user equipment processes the first received signal and the second received signal according to the local synchronization signal sequence.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the user equipment performs, according to the local synchronization signal sequence, the first received signal and the second received signal.
  • the processing includes: the user equipment performs correlation processing on the first received signal according to the first local synchronization signal sequence; and the user equipment performs correlation processing on the second received signal according to the second local synchronization signal sequence.
  • the process of processing the first received signal and the second received signal is refined in the embodiment of the present application, so that the embodiment of the present application is more complete in the steps.
  • the user equipment performs related processing on the first received signal according to the first local synchronization signal sequence, including: the user The device performs correlation processing on the first received signal according to the first local synchronization signal sequence, where the first local synchronization signal sequence is a sequence obtained by the first m sequence, the first m sequence ⁇ c(n)
  • the embodiment of the present application defines the first local synchronization signal sequence, which increases the achievability and operability of
  • the user equipment performs related processing on the second received signal according to the second local synchronization signal sequence, including: the user The device performs correlation processing on the second received signal according to the second local synchronization signal sequence, the second local synchronization signal sequence is a sequence obtained by the first Gold sequence, and the first Gold sequence is determined by the second m sequence ⁇ f 1 (n)
  • n 0,1,2,...,N-1 ⁇ and the third m-sequence ⁇ f 2 (n)
  • n 0,1,2,...,N-1 ⁇ are generated,
  • the sequence and the third m sequence satisfy y m,k (n
  • the second local synchronization signal sequence, f 1 (n) is the second m sequence, and f 2 (n) is the third m sequence.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the second local synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a third aspect of the embodiments of the present application provides a method for transmitting a synchronization signal, including: a network device generating a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by the first Gold sequence.
  • the first Gold sequence is a sequence generated by a first m sequence and a second m sequence
  • the second synchronization signal sequence is a sequence obtained by a second Gold sequence
  • the second Gold sequence is a third m sequence a sequence generated by the sequence and the fourth m sequence, the first m sequence being identical to a generator polynomial of the third m sequence, the second m sequence being identical to a generator polynomial of the fourth m sequence, wherein
  • the relative shift value of the first m sequence and the second m sequence is m 1
  • the relative shift values of the third m sequence and the fourth m sequence are m 2 , m 1 ⁇ m 2 (modN)
  • the first m sequence, the second m sequence, the third m sequence, and the fourth m sequence are N in length; the network device maps the first synchronization signal sequence to the first Obtaining a first synchronization signal on M subcarriers of the time unit, and the second synchronization No sequence is mapped to M subcar
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the first synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is a first a sequence generated by an m sequence f 1 (n) and a second m sequence f 2 (n)
  • the second synchronization signal sequence being a sequence obtained from a second Gold sequence
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the first synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a fourth aspect of the embodiments of the present application provides a method for receiving a synchronization signal, including: a user equipment receives a first received signal and a second received signal; and the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a local synchronization signal sequence and a second local synchronization signal sequence, the first local synchronization signal sequence being a sequence obtained by the first Gold sequence, the first Gold sequence being generated by the first m sequence and the second m sequence a sequence, the second local synchronization signal sequence is a sequence obtained by a second Gold sequence, and the second Gold sequence is a sequence generated by a third m sequence and a fourth m sequence, the first m sequence and the
  • the third m sequence has the same generator polynomial, and the second m sequence is identical to the fourth m sequence's generator polynomial, wherein the relative shift values of the first m sequence and the second m sequence are m 1 a relative shift value of the third m sequence and the fourth
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the first local synchronization signal sequence, f 1 (n) is the first m sequence
  • f 2 (n) is the second m sequence.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition that may be satisfied by the first local synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a fifth aspect of the embodiments of the present application provides a method for transmitting a synchronization signal, including: a network device generating a first synchronization signal sequence and a second synchronization signal sequence, where the second synchronization signal sequence is a first m sequence and a first a sequence obtained by the second m sequence, the relative shift value of the first m sequence and the second m sequence is m, and the cyclic shift value is p, and the value range of the p does not include the first synchronization a cyclic shift value k strongly related to the signal sequence, the length of the first m sequence and the second m sequence being N; the network device mapping the first synchronization signal sequence to M subcarriers of the first time unit Obtaining a first synchronization signal, mapping the second synchronization signal sequence to M subcarriers of the second time unit to obtain a second synchronization signal, where M, N is a positive integer greater than 1; the network device sends the a first synchronization signal and the second synchron
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the second synchronization signal sequence may be a Gold sequence
  • the Gold sequence is a first m sequence f 1 (n
  • m 0, 1, 2, ..., N-1
  • y m, k (n) is the second synchronization signal sequence
  • g m, k (n) is a Gold sequence
  • f 2 (n) are m sequences.
  • the embodiment of the present application defines the second synchronization signal sequence, which increases the achievability and operability of
  • a sixth aspect of the embodiments of the present application provides a method for receiving a synchronization signal, including: a user equipment receives a first received signal and a second received signal; and the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, the second local synchronization signal sequence being a sequence obtained by the first m sequence and the second m sequence, the first m sequence and the second m sequence a relative shift value of m, a cyclic shift value of p, the range of values of p not including a cyclic shift value k strongly correlated with the first synchronization signal sequence, the first m sequence and the second
  • the length of the m sequence is N, and the N is a positive integer greater than one; the user equipment processes the first received signal and the second received signal according to the sequence of local synchronization signals.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the embodiment of the present application defines the second local synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • a seventh aspect of the embodiments of the present application provides a network device, including: a generating unit, configured to generate a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is obtained by the first m sequence a sequence, the second synchronization signal sequence is a sequence obtained by a first Gold sequence, the first Gold sequence is generated by a second m sequence and a third m sequence, a generator polynomial of the first m sequence and the first The second m sequence has the same generator polynomial, and the first m sequence, the second m sequence, and the third m sequence have a length N; a mapping unit is configured to map the first synchronization signal sequence to the first time Obtaining a first synchronization signal on the M subcarriers of the unit, mapping the second synchronization signal sequence to M subcarriers of the second time unit to obtain a second synchronization signal, where M, N is a positive integer greater than 1; And a unit, configured to send the first
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the first synchronization signal sequence is a sequence obtained by a first m sequence, and the first m sequence ⁇ c( The generator polynomial of n)
  • the embodiment of the present application defines the first synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • the second synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is a second sequence.
  • n 0,1,2, ..., N-1 ⁇
  • y m,k (n) is the second synchronization signal sequence
  • g m,k (n) is the first Gold sequence
  • m is a f 1 (n) sequence
  • f 2 (n) Relative shift values between sequences, k being a cyclic shift value.
  • the embodiment of the present application defines the second synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the second synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • An eighth aspect of the embodiments of the present application provides a user equipment, including: a receiving unit, configured to receive a first received signal and a second received signal; and a generating unit, configured to generate a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, the first local synchronization signal sequence being a sequence obtained by a first m sequence, and the second local synchronization signal sequence being a sequence obtained by a first Gold sequence,
  • the first Gold sequence is generated by a second m sequence and a third m sequence, a generator polynomial of the first m sequence is the same as a generator polynomial of the second m sequence, the first m sequence, the second m sequence
  • the length of the third m sequence is N, N is a positive integer greater than 1, and the processing unit is configured to process the first received signal and the second received signal according to the local synchronization signal sequence.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the processing unit includes: a first processing subunit, configured to perform, according to the first local synchronization signal sequence, a first Receiving a signal for correlation processing; and a second processing subunit, configured to perform correlation processing on the second received signal according to the second local synchronization signal sequence.
  • the process of processing the first received signal and the second received signal is refined in the embodiment of the present application, so that the embodiment of the present application is more complete in the steps.
  • the first processing sub-unit is specifically configured to: perform, according to the first local synchronization signal sequence, the first received signal Correlation processing, the first local synchronization signal sequence is a sequence obtained by a first m sequence, the first m sequence ⁇ c(n)
  • n 0, 1, 2, ..., N-1 ⁇
  • the embodiment of the present application defines the first local synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • the second processing sub-unit is specifically configured to: perform, according to the second local synchronization signal sequence, the second received signal Correlation processing, the second local synchronization signal sequence is a sequence obtained by a first Gold sequence, and the first Gold sequence is composed of a second m sequence ⁇ f 1 (n)
  • n 0, 1, 2, ...
  • the generator polynomial of the third m sequence is
  • K are positive integers greater than or equal to 1, 0 ⁇ i ⁇ K
  • the first Gold sequence the first
  • the second synchronization signal sequence, f 1 (n) is the second m sequence, and f 2 (n) is the third m sequence.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the second local synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a ninth aspect of the present application provides a network device, including: a generating unit, configured to generate a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by the first Gold sequence
  • the first Gold sequence is a sequence generated by a first m sequence and a second m sequence
  • the second synchronization signal sequence is a sequence obtained by a second Gold sequence
  • the second Gold sequence is a third m sequence a sequence generated by the sequence and the fourth m sequence, the first m sequence being identical to a generator polynomial of the third m sequence, the second m sequence being identical to a generator polynomial of the fourth m sequence, wherein
  • the relative shift value of the first m sequence and the second m sequence is m 1
  • the relative shift values of the third m sequence and the fourth m sequence are m 2 , m 1 ⁇ m 2 (modN)
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the first synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is first The m sequence f 1 (n) and the second m sequence f 2 (n) are generated
  • the second synchronization signal sequence is a sequence obtained by a second Gold sequence
  • the second Gold sequence is a third m sequence f 3 (n)
  • y m,k (n) 1-2 ⁇ g m,k (n)
  • g m,k (n) (f 1 ((n+m+k)modN)+f 2 ((n+k) modN)) mod2
  • y m,k (n) is a first synchronization signal sequence
  • g m,k (n) is the first Gold sequence
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition for the possible satisfaction of the first synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • a tenth aspect of the present application provides a user equipment, including: a receiving unit, configured to receive a first received signal and a second received signal; and a generating unit, configured to generate a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, the first local synchronization signal sequence being a sequence obtained by the first Gold sequence, the first Gold sequence being generated by the first m sequence and the second m sequence a sequence of the second local synchronization signal sequence obtained by the second Gold sequence, the second Gold sequence being a sequence generated by the third m sequence and the fourth m sequence, the first m sequence and the The generating polynomials of the third m sequence are the same, the second m sequence is the same as the generating polynomial of the fourth m sequence, wherein the relative shift value of the first m sequence and the second m sequence is m 1 .
  • the relative shift values of the third m sequence and the fourth m sequence are m 2 , m 1 ⁇ m 2 (modN), the first m sequence, the second m sequence, the first a three m sequence, and the fourth m sequence has a length of N And N is a positive integer greater than one; and the processing unit is configured to process the first received signal and the second received signal according to the local synchronization signal sequence.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the first local synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is An m-sequence f 1 (n) and a second m-sequence f 2 (n) are generated
  • the second local synchronizing signal sequence is a sequence obtained from a second Gold sequence
  • the second Gold sequence is represented by a third m-sequence f 3 (n) and a fourth m sequence f 4 (n) are generated
  • the embodiment of the present application defines the first local synchronization signal sequence and the second local synchronization signal sequence, which increases the achievability and operability of the embodiment of the present application.
  • the first local synchronization signal sequence, f 1 (n) is the first m sequence
  • f 2 (n) is the second m sequence.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • the embodiment of the present application provides another condition that may be satisfied by the first local synchronization signal, and the implementation manner of the embodiment of the present application is added.
  • An eleventh aspect of the embodiments of the present application provides a method for transmitting a synchronization signal, including: a network device generating a first synchronization signal sequence and a second synchronization signal sequence, where the second synchronization signal sequence is a first m sequence and a sequence obtained by the second m sequence, the relative shift value of the first m sequence and the second m sequence is m, and the cyclic shift value is p, and the value range of the p does not include the first a cyclic shift value k strongly correlated with the synchronization signal sequence, the length of the first m sequence and the second m sequence being N; the network device mapping the first synchronization signal sequence to M subcarriers of the first time unit Obtaining a first synchronization signal, mapping the second synchronization signal sequence to M subcarriers of the second time unit to obtain a second synchronization signal, where M, N is a positive integer greater than 1; The first synchronization signal and the second synchronization signal are described.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • the second synchronization signal sequence may be a Gold sequence
  • the second synchronization signal sequence is defined in the embodiment of the present application, which increases the a
  • a twelfth aspect of the embodiments of the present application provides a method for receiving a synchronization signal, including: a user equipment receives a first received signal and a second received signal; and the user equipment generates a local synchronization signal sequence, the local synchronization signal sequence a first local synchronization signal sequence and a second local synchronization signal sequence, the second local synchronization signal sequence being a sequence obtained by a first m sequence and a second m sequence, the first m sequence and the second m
  • the relative shift value of the sequence is m
  • the cyclic shift value is p
  • the range of values of p does not include a cyclic shift value k strongly correlated with the first synchronization signal sequence, the first m sequence and the first
  • the length of the two m sequences is N, and the N is a positive integer greater than one; the user equipment processes the first received signal and the second received signal according to the local synchronization signal sequence.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the second local synchronization signal sequence may be a Gold sequence
  • the embodiment of the present application defines the second local synchronization signal sequence, which increases the achievability and operability of the embodiment of the
  • a thirteenth aspect of the present application provides a computer readable storage medium having stored therein instructions that, when run on a computer, cause the computer to perform the steps of: generating a first synchronization signal sequence and a second synchronization signal sequence, the first synchronization signal sequence is a sequence obtained by a first m sequence, the second synchronization signal sequence is a sequence obtained by a first Gold sequence, and the first Gold sequence is obtained by a second m Generating a sequence and a third m sequence, the generator polynomial of the first m sequence being the same as the generator polynomial of the second m sequence, the first m sequence, the second m sequence, and the length of the third m sequence Is N; mapping the first synchronization signal sequence to the M subcarriers of the first time unit to obtain a first synchronization signal, and mapping the second synchronization signal sequence to the M subcarriers of the second time unit to obtain a second A synchronization signal, the M, N being a positive integer greater than one.
  • the first synchronization signal sequence is a sequence obtained by a first m sequence, where the first m sequence ⁇ c(n)
  • n 0, 1, 2, . . . , N-1 ⁇
  • the second synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is represented by a second m sequence ⁇ f 1 (n)
  • n 0, 1, 2, ... , N-1 ⁇ and a third m-sequence ⁇ f 2 (n)
  • n 0, 1, 2, ..., N-1 ⁇ are generated
  • y m,k (n) is the second synchronization signal sequence
  • g m,k (n) is the first Gold sequence
  • m is a f 1 (n) sequence
  • f 2 (n) Relative shift values between sequences, k being a cyclic shift value.
  • x 1 (n) 1-2 ⁇ f 1 (n)
  • generating a local synchronization signal sequence where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, where the first local synchronization signal sequence is a sequence obtained by the first m sequence,
  • the second local synchronization signal sequence is a sequence obtained by a first Gold sequence generated by a second m sequence and a third m sequence, a generator polynomial of the first m sequence and the second m
  • the generator polynomial of the sequence is the same, the first m sequence, the second m sequence, and the third m sequence have a length N, N is a positive integer greater than 1; the first is performed according to the local synchronization signal sequence
  • the received signal and the second received signal are processed.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by an m sequence, and the second synchronization signal sequence is a Gold synchronization sequence.
  • the network device transmits the first synchronization signal and the second synchronization signal.
  • the primary synchronization signal sequence and the secondary synchronization signal sequence with small correlation values generated by the network device reduce the cross-correlation between the secondary synchronization signal and the primary synchronization signal, thereby reducing the complement of other cells or the local cell.
  • the interference of the sync signal to the main sync signal reduce the cross-correlation between the secondary synchronization signal and the primary synchronization signal, thereby reducing the complement of other cells or the local cell.
  • FIG. 1a is a schematic diagram of a network architecture according to an embodiment of the present application.
  • FIG. 1b is a schematic diagram of a scenario according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an embodiment of a method for transmitting a synchronization signal according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a correspondence relationship between an octal value and a primitive polynomial according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a scene in which a synchronization signal has different center frequency points according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of another embodiment of a method for transmitting a synchronization signal according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an embodiment of a network device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an embodiment of a user equipment according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another embodiment of a network device according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of another embodiment of a network device according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present application.
  • FIG. 12b is a schematic diagram of another embodiment of a user equipment according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of another embodiment of a network device according to an embodiment of the present application.
  • the embodiment of the present application provides a method for transmitting a synchronization signal, which is used to reduce correlation between a secondary synchronization signal and a primary synchronization signal, and reduce interference received by the primary synchronization signal.
  • the embodiment of the present application can be applied to a network architecture as shown in FIG. 1a, in which a synchronization signal is transmitted between a network device (for example, a base station) and a user equipment (for example, a mobile phone), and the transmission in this application
  • a network device for example, a base station
  • a user equipment for example, a mobile phone
  • a device that synchronizes signals is called a network device.
  • the embodiment in the present application is described by taking a network device to send a synchronization signal to the user equipment.
  • FIG. 1b when the user terminal of the cell 1 detects the primary synchronization signal, the secondary synchronization signal in the cell 1 and the cell 2 will be The primary synchronization signal of cell 1 produces interference.
  • the cell 2 and the cell 1 may not be synchronized in time, it is possible to generate a situation in which the secondary synchronization signal of the cell 2 and the primary synchronization signal of the cell 1 overlap in time. At this time, the secondary synchronization signal in the cell 2 is in the cell 1
  • the primary sync signal produces interference.
  • the secondary synchronization signal in cell 1 may also interfere with the detection of the primary synchronization signal in cell 1. This is because when the user terminal detects the primary synchronization signal in the cell 1, it needs to perform a correlation operation with the local primary synchronization signal sequence and the received signal at a plurality of times, and at the time of the secondary synchronization signal, it is received and received.
  • the secondary sync signal is correlated and thus interfered by the secondary sync signal.
  • the synchronization signal can be sent and received between the network device and the network device, and between the user equipment and the user equipment, which is not limited herein.
  • the network device in this application may be any device having a wireless transceiving function. Including but not limited to: Global System for Mobile (GSM) or base transceiver station (BTS) in CDMA, base station (NodeB) in WCDMA, evolved base station in LTE (NodeB or eNB or e -NodeB, evolutional Node B), base station (gNodeB or gNB) or transmission reception point (TRP) in NR, base station of 3GPP subsequent evolution, access node in WiFi system, wireless relay node, wireless backhaul Nodes, etc.
  • the base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like.
  • a plurality of base stations can support the networks of the same technology mentioned above, and can also support the networks of the different technologies mentioned above.
  • the base station may include one or more co-site or non-co-located transmission receiving points (TRPs).
  • the network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the network device can also be a server, a wearable device, or an in-vehicle device.
  • the following uses a network device as a base station as an example for description.
  • the multiple network devices may be the same type of base station or different types of base stations.
  • the base station can communicate with the terminal device or with the terminal device through the relay station.
  • the terminal device can communicate with multiple base stations of different technologies.
  • the terminal device can communicate with a base station supporting the LTE network, or can communicate with a base station supporting the 5G network, and can also support the base station of the LTE network and the base station of the 5G network. Double connection.
  • the terminal device in the present application is a device with wireless transceiving function, which can be deployed on land, indoors or outdoors, hand-held, worn or in-vehicle; can also be deployed on the water surface (such as a ship), and can also be deployed in the air ( Such as airplanes, balloons and satellites, etc.).
  • the terminal device may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and industrial control ( Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety A wireless terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • User equipment may also be referred to as a terminal, a terminal device, a user equipment (UE), an access terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, and a UE terminal.
  • Equipment, terminal equipment, wireless communication equipment, UE proxy or UE device, etc. The terminal can also be fixed or mobile.
  • n 0,1,2,...,N-1 ⁇ is satisfied
  • the initial state is c(K-1), c(K-2), c(K-3),...,c(1),c(0), and the sequence can be obtained according to the initial state value and the recursion formula.
  • n 0,1,2,...,N-1 ⁇ .
  • the generator polynomial is a K-th order primitive polynomial
  • the Gold sequence is a sequence generated by a pair of preferred m-sequence modulo 2 additions, a pair of preferred m-sequences such that the cross-correlation of the different Gold sequences is small.
  • f 1 (n), f 2 (n) are two m sequences of length N
  • the change in m,k produces multiple different Gold sequences of the same group.
  • a pair of m sequences of the Gold sequence such that the cross-correlation of the different Gold sequences of the same set is small.
  • Three main synchronization signal sequences are generated according to three cyclic shifts (0, 43, 86).
  • cyclic shift sequence is defined as ⁇ c((n+p)modN)
  • the primary synchronization signal may be interfered.
  • the correlation value between the secondary synchronization signal and the primary synchronization signal is large, and the detection of the primary synchronization signal is also interfered.
  • the maximum correlation values for a sequence with a bit value of k m are as follows: ⁇ 33, 29, 25, 31, 41, 29, 33, 33, 29, 25, 31, 41, 29, 33, 33, 29, 25, 31, 41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29
  • the maximum correlation value of different sequences in a typical set of Gold sequences is 17, and the above correlation value is significantly larger than 17, resulting in a large interference of the secondary synchronization signal to the primary synchronization signal.
  • an embodiment of the method for sending a synchronization signal in the embodiment of the present application includes:
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by the first m sequence, and the second synchronization signal sequence is a sequence obtained by the first Gold sequence, the first Gold
  • the sequence is generated by a second m sequence and a third m sequence, the generator polynomial of the first m sequence being the same as the generator polynomial of the second m sequence, the first m sequence, the second m sequence, and the third m sequence
  • the length is N, and N is a positive integer greater than one.
  • the first synchronization signal sequence is obtained by the first m sequence, and the network device is based on the generator polynomial.
  • the coefficient of the polynomial can be 0 or 1
  • the initial state values of the first m sequence are different, the obtained sequence is also different, and the initial state values of the first m sequence are not limited herein.
  • the second synchronization signal sequence is a sequence obtained by the first Gold sequence, and the first Gold sequence is composed of the second m sequence ⁇ f 1 (n)
  • n 0, 1, 2, ..., N-1 ⁇ and the third The m-sequence ⁇ f 2 (n)
  • K is an integer greater than 1, and is not limited herein.
  • the first synchronization signal sequence and the second synchronization signal sequence may be cyclically shifted to obtain other sequences having the same property. For example, the nature of the sequence obtained after cyclic shifting of the first synchronization signal sequence is unchanged, and is still an m signal sequence.
  • the second synchronization signal sequence is cyclically shifted to obtain other Gold sequences of the same group.
  • the cyclic shift sequence satisfies ⁇ c((n+p)modN)
  • the corresponding first synchronization signal sequence is a sequence obtained based on the first m sequence.
  • the corresponding second synchronization signal sequence is a sequence sequence obtained based on the second m sequence and the third m sequence.
  • the generator polynomial of the second m sequence is the same as the generator polynomial of the first m sequence of the first synchronization signal.
  • the primitive polynomial corresponding to the second m sequence is ⁇ 1 0 0 1 0 0 0 1 ⁇ , corresponding to an octal value 221 .
  • the generator polynomial of the third m sequence may be a generator polynomial corresponding to any of the octal values 361, 375, 313, 301, 325, 345, 367, 271, 253, 203 in FIG. 3, coefficient a 7 , a 6 , . . . , a 1 , a 0 is a value corresponding to each primitive polynomial (ie, the above-described generator polynomial) in FIG. 3, and a 7 is the highest bit.
  • both the first synchronization signal sequence and the second synchronization signal sequence are sequences obtained by the Gold sequence.
  • the first synchronization signal sequence is a sequence obtained from the first Gold sequence.
  • the first Gold sequence is a sequence generated by a first m sequence and a second m sequence.
  • the second synchronization signal sequence is the sequence resulting from the second Gold sequence.
  • the second Gold sequence is a sequence generated by a third m sequence and a fourth m sequence.
  • the first m sequence is the same as the generator polynomial of the third m sequence, and the second m sequence is identical to the generator polynomial of the fourth m sequence.
  • a relative shift value of the first m sequence and the second m sequence is m 1
  • a relative shift value of the third m sequence and the fourth m sequence is m 2 , satisfying m 1 ⁇ m 2 (modN).
  • g m,k (n) (f 1 ((n+m+k) modN)+f 2 ((n+k) modN)) mod2
  • m 0, 1, 2, ..., N-1
  • m are f 1 (n) sequence and f 2 (n) sequence Relative shift value between.
  • g m,k (n) (f 3 ((n+m+k)modN)+f 4 ((n+k) modN)) mod2
  • the network device obtains a first synchronization signal and a second synchronization signal.
  • the network device maps the first synchronization signal sequence to the M subcarriers of the first time unit to obtain a first synchronization signal, and maps the second synchronization signal sequence to the M subcarriers of the second time unit to obtain a second synchronization signal, where M is A positive integer greater than one.
  • the first synchronization signal and the second synchronization signal obtained by the network device may be a sequence obtained by performing modulation transformation by m-sequence, or may be directly generated according to a formula.
  • the mapping of the central elements of the sequence of synchronization signals may or may not be mapped to the central subcarrier of the synchronization signal in the frequency domain. The invention is not limited herein.
  • the network device can modulate the m sequence by means of binary phase shift keying (BPSK) to obtain a modulated and transformed synchronization signal sequence.
  • BPSK binary phase shift keying
  • the network device can also modulate the synchronization signal sequence by using other modulation methods, which is not limited herein.
  • the network device sends the first synchronization signal and the second synchronization signal.
  • the network device transmits the first synchronization signal on the subcarrier carrying the first synchronization signal sequence, and transmits the second synchronization signal on the subcarrier carrying the second synchronization signal sequence.
  • the user equipment receives the first received signal and the second received signal.
  • the user equipment receives the signal sent by the network device and selects to receive the first received signal and the second received signal that meet the signal quality requirements.
  • the user equipment can receive the received signal and receive the required first received signal and second received signal in the signal with the required signal quality.
  • Signal quality may include signal strength, channel quality indication information, and the like. This is not limited here.
  • the user equipment generates a local synchronization signal sequence.
  • the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, the first local synchronization signal sequence is a sequence obtained by the first m sequence, and the second local synchronization signal sequence is A sequence obtained from a first Gold sequence generated by a second m sequence and a third m sequence, the generator polynomial of the first m sequence being identical to the generator polynomial of the second m sequence of the first Gold sequence.
  • the first local synchronization signal sequence is obtained by the first m sequence, and the user equipment according to the generator polynomial Obtaining the first m-sequence ⁇ c(n)
  • the initial state values of the first m sequence are different, the obtained sequence is also different, and the initial state values of the first m sequence are not limited herein.
  • the second local synchronization signal sequence is a sequence obtained by the first Gold sequence, and the Gold sequence is composed of the second m sequence ⁇ f 1 (n)
  • n 0, 1, 2, ..., N-1 ⁇ and the third m
  • y m,k (n) is the second synchronization signal sequence
  • g m,k (n) is the first Gold sequence
  • m is the f 1 (n) sequence
  • f 2 (n) The relative shift value between the sequences.
  • K is an integer greater than 1, and is not limited herein.
  • the first local synchronization signal sequence and the second local synchronization signal sequence may be cyclically shifted to obtain other sequences having the same property, for example, a sequence obtained by cyclically shifting the first local synchronization signal sequence, and the nature of the sequence remains unchanged. For the m sequence, the sequence after the cyclic shift of the second local synchronization signal sequence is still the Gold sequence.
  • n 0,1,2,...,N
  • the cyclic shift sequence of -1 ⁇ satisfies ⁇ c((np)modN)
  • the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, where the first local synchronization signal sequence is a sequence obtained by the first Gold sequence.
  • the first Gold sequence is a sequence generated by the first m sequence f 1 (n) and the second m sequence f 2 (n)
  • the second local synchronization signal sequence is a sequence obtained by the second Gold sequence
  • the second Gold sequence is A sequence generated by the third m sequence f 3 (n) and the fourth m sequence f 4 (n)
  • the user equipment processes the first received signal and the second received signal.
  • the user equipment processes the first received signal and the second received signal according to a sequence of local synchronization signals, the local synchronization signal comprising a first local synchronization signal and a second local synchronization signal.
  • the received signal includes a first received signal and a second received signal
  • the user equipment performs a correlation operation on the received signal.
  • the first received signal and the second received signal may be the same, for example, signals received within a period of time, or may be different, such as signals received in different time periods.
  • the first synchronization signal sequence and the second synchronization signal sequence that is, the primary synchronization signal sequence and the secondary synchronization signal sequence, which are generated by the network device and have a small correlation value, reduce the mutual synchronization between the secondary synchronization signal and the primary synchronization signal.
  • the interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal can be reduced. It is further ensured that when the main synchronization signal is searched at different center frequency points, there is no strong correlation with other synchronization signals due to the difference of the frequency points.
  • the mathematical symbols and the letters themselves in the various embodiments of the present invention are not limited to the invention.
  • the first m sequence is represented by f 1 (n), and other function symbols may also be used.
  • a sequence symbol indicates, for example, a(n) or a 1 (n) or x(n).
  • the above sequence may be data stored in a specific order or in a certain relationship, and is mathematically calculated or processed.
  • the center of the assumed frequency center is center 1
  • the center position of the actually transmitted synchronization signal is center 2
  • the Gold sequence used for the primary synchronization signal and the Gold sequence of the secondary synchronization signal are used.
  • the center of the hypothesis detected is different from the center of the actual secondary sync signal transmission, it may cause overlapping in the frequency domain.
  • the parts are identical, resulting in a large correlation value.
  • the solution of the invention makes m 1 ⁇ m 2 (modN), so the correlation value is small and the interference is small.
  • the processing process of the different receiving signals by the user equipment is different.
  • the detection of the primary synchronization signal and the detection of the secondary synchronization signal are different.
  • the device on the receiving side needs to assume the center of the primary synchronization signal.
  • the frequency, according to the assumed center frequency of the main synchronizing signal obtains the received signal, and performs correlation operation using the generated local main synchronizing signal sequence and the received signal.
  • the secondary synchronization signal When the secondary synchronization signal is detected, it is performed when the primary synchronization signal has been detected, and the receiving side device can obtain the center of the secondary synchronization signal according to the center of the detected primary synchronization signal (the center of the primary synchronization signal)
  • the center of the secondary sync signal is usually the same).
  • the possible frequency point of the center of the main synchronizing signal is f 0 + n ⁇ f R , n is an integer, f 0 is the initial frequency, and f R is the channel spacing, which may be predefined.
  • the channel spacing f R value may take 100 KHz, 180 KHz, 300 KHz, etc., and the f R values may be different with different frequency bands (Frequency Bands). For example, at high frequencies, below 3 GHz, 3 GHz-6 GHz, and 6 GHz-52.6 GHz may have different channel spacing values.
  • the network device determines to use one of the cells based on the cell identity.
  • the network device determines to use one of the cells based on the cell identity.
  • the two m-sequences are identical to the generator polynomials of the two m-sequences of the Gold sequence that generates the secondary synchronization signal.
  • the generator polynomial of the two m-sequences of the Gold sequence of the primary synchronization signal is the same as the polynomial of the two m-sequences of the Gold sequence that generates the secondary synchronization signal, that is, belongs to the same group of Gold sequences.
  • the secondary synchronization signal may also have multiple, relative shift values and cyclic value changes, resulting in different Gold sequences, and different Gold sequences may carry the identification information of the cell.
  • the sequences of synchronization signals of different frequency bands may be the same length.
  • f R 180 KHz
  • a 0 43
  • a 1 86
  • ⁇ f 30 KHz
  • b 0 43
  • b 1 43
  • b 2 41.
  • the selected a 0 , a 1 , f R must satisfy (b i ⁇ ⁇ f) mod f R > ⁇ f and f R - (b i ⁇ ⁇ f) mod f R > ⁇ f, where ⁇ f Is the subcarrier spacing of the primary synchronization signal of the frequency band.
  • a method and a device for transmitting or receiving a primary synchronization signal sequence generated by a sequence of m shifts having a cyclic shift value of 0, a 0 , a 1 in accordance with this feature can reduce the detection of the synchronization channel when performing primary synchronization signal detection.
  • the center frequency is subject to interference.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence, where the second synchronization signal sequence is a sequence obtained by the first m sequence and the second m sequence, and obtains a first m sequence and a second m of the second synchronization signal sequence.
  • the relative shift value of the sequence is m
  • the cyclic shift value is p
  • the range of values of p does not include the cyclic shift value k strongly correlated with the first sync signal sequence
  • the lengths of the first m sequence and the second m sequence are N.
  • the second synchronization signal sequence is a sequence obtained by adding the first m sequence and the second m sequence through the modulo-2 addition operation. That is, from the first m sequence ⁇ f 1 (n)
  • n 0,1,2,...,N-1 ⁇ and the second m sequence ⁇ f 2 (n)
  • n 0,1,2,.
  • N-1 ⁇ is generated by the modulo-2 addition operation
  • the generator polynomial of the first m sequence is
  • the generator polynomial of the second m sequence is
  • the second synchronization signal sequence may be obtained by a gold sequence. It can also be obtained without the gold sequence.
  • the cyclic shift p value used for one m sequence in the second synchronization signal does not include a cycle corresponding to the sequence with the largest correlation value of the first synchronization signal. Shift the k value.
  • the correlation value of two sequences of the same length is defined as the absolute value of the value obtained by multiplying the conjugates of the elements at the same position.
  • the second sync signal sequence needs to avoid the cyclic shift k Values are ⁇ 20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95
  • the network device obtains a first synchronization signal and a second synchronization signal.
  • the network device maps the first synchronization signal sequence and the second synchronization signal sequence to the N subcarriers of the first time unit and the N subcarriers of the second time unit, respectively, to obtain a first synchronization signal and a second synchronization signal, where N is greater than Or a positive integer equal to 1.
  • the first synchronization signal and the second synchronization signal obtained by the network device may be a sequence obtained by performing modulation transformation by m-sequence, or may be directly generated according to a formula.
  • the second synchronization signal is similar to the first synchronization signal and will not be described here.
  • the mapping of the central elements of the sequence of synchronization signals may or may not be mapped to the central subcarrier of the synchronization signal in the frequency domain. The invention is not limited herein.
  • the network device can modulate the m sequence by means of binary phase shift keying (BPSK) to obtain a modulated and transformed synchronization signal sequence.
  • BPSK binary phase shift keying
  • the network device can also modulate the synchronization signal sequence by using other modulation methods, which is not limited herein.
  • the network device sends the first synchronization signal and the second synchronization signal.
  • the network device transmits the first synchronization signal on the subcarrier carrying the first synchronization signal sequence, and transmits the second synchronization signal on the subcarrier carrying the second synchronization signal sequence.
  • the user equipment receives the first received signal and the second received signal.
  • the user equipment filters the received signal and selects to receive the first received signal and the second received signal that meet the signal quality requirements.
  • step 503 to the step 504 of the user equipment transmitting the synchronization signal are similar to the steps 203 to 204 in FIG. 2, and details are not described herein again.
  • the user equipment generates a local synchronization signal sequence.
  • the user equipment generates a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, and the second local synchronization signal sequence is a sequence obtained by the first m sequence and the second m sequence,
  • the relative shift value of the first m sequence and the second m sequence of the two local synchronization signal sequences is m
  • the cyclic shift value is p
  • the value range of p does not include the cyclic shift value strongly correlated with the first synchronization signal sequence.
  • the user equipment processes the first received signal and the second received signal.
  • the user equipment processes the first received signal and the second received signal according to a sequence of local synchronization signals, the local synchronization signal comprising a first local synchronization signal and a second local synchronization signal.
  • the received signal includes a first received signal and a second received signal, and the user equipment performs related operations on the received signal.
  • the first synchronization signal sequence and the second synchronization signal sequence that is, the primary synchronization signal sequence and the secondary synchronization signal sequence, which are generated by the network device and have a small correlation value, reduce the mutual synchronization between the secondary synchronization signal and the primary synchronization signal.
  • the interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal can be reduced.
  • an embodiment of a network device in this embodiment of the present application includes:
  • a generating unit 601 configured to generate a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by a first m sequence, and the second synchronization signal sequence is obtained by a first Gold sequence a sequence of the first Gold sequence generated by a second m sequence and a third m sequence, the generator polynomial of the first m sequence being the same as the generator polynomial of the second m sequence, the first m sequence, a second m sequence, and the third m sequence has a length of N;
  • the mapping unit 602 is configured to map the first synchronization signal sequence to the M subcarriers of the first time unit to obtain a first synchronization signal, and map the second synchronization signal sequence to the M subcarriers of the second time unit. Obtaining a second synchronization signal, where M, N is a positive integer greater than one;
  • the sending unit 603 is configured to send the first synchronization signal and the second synchronization signal.
  • Embodiments of the present invention provide a method for generating a synchronization signal, where the synchronization signal may include a first synchronization signal and a second synchronization signal.
  • the first synchronization signal and the second synchronization signal may be the first synchronization signal and the second synchronization signal mentioned in the respective embodiments.
  • the first synchronization signal may be a primary synchronization signal
  • the second synchronization signal may be a secondary synchronization signal.
  • the first synchronization signal is generated based on the first synchronization signal sequence.
  • the second synchronization signal is generated based on the second synchronization signal sequence.
  • c(n) is the first m sequence.
  • n 0, 1, 2, ..., N-1 ⁇ and the third m
  • n 0, 1, 2, ..., N-1 ⁇ .
  • g m,k (n) can be a Gold sequence.
  • f 2 (n) is the third m sequence.
  • Equation 4 can also be expressed as:
  • the correlation values of the first synchronization signal sequence and the second synchronization signal sequence obtained by the above embodiments are small, that is, the correlation values of the primary synchronization signal sequence and the secondary synchronization signal sequence are small, and thus the cross correlation between the secondary synchronization signal and the primary synchronization signal is performed.
  • the performance is reduced, so that the interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal can be reduced.
  • another embodiment of the user equipment in this embodiment of the present application includes:
  • the receiving unit 701 is configured to receive the first received signal and the second received signal
  • the generating unit 702 is configured to generate a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, where the first local synchronization signal sequence is a sequence obtained by the first m sequence
  • the second local synchronization signal sequence is a sequence obtained by a first Gold sequence generated by a second m sequence and a third m sequence, a generator polynomial of the first m sequence and the first
  • the generator polynomials of the second m sequence are the same, and the length of the first m sequence, the second m sequence, and the third m sequence is N, and N is a positive integer greater than 1.
  • the processing unit 703 is configured to process the first received signal and the second received signal according to the local synchronization signal sequence.
  • processing unit 703 may further include:
  • the first processing subunit 7031 is configured to perform correlation processing on the first received signal according to the first local synchronization signal sequence:
  • the second processing subunit 7032 is configured to perform correlation processing on the second received signal according to the second local synchronization signal sequence.
  • the first processing subunit 7031 may be specifically configured to:
  • the first local synchronization signal sequence may also be generated by using the first synchronization signal sequence generation manner described in the foregoing embodiments.
  • the first synchronization signal sequence generation manner described in the foregoing embodiments.
  • the second processing subunit 7032 is specifically configured to:
  • the second local synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is represented by a second m sequence ⁇ f 1 (n)
  • n 0, 1, 2 , ..., N-1 ⁇ and a third m-sequence ⁇ f 2 (n)
  • n 0, 1, 2, ..., N-1 ⁇ are generated
  • the generator polynomial of the second m-sequence is The generator polynomial of the third m sequence.
  • the second local sequence synchronization signal y m, k (n) is satisfied:
  • y m,k (n) can also be expressed as:
  • the second local synchronization signal sequence may also be generated by using the first synchronization signal sequence generation manner described in the foregoing embodiments.
  • the first synchronization signal sequence generation manner described in the foregoing embodiments.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • FIG. 8 another embodiment of a network device in this embodiment of the present application includes:
  • a generating unit 801 configured to generate a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained by a first Gold sequence, where the first Gold sequence is a first m sequence and a first a sequence generated by a second m sequence, the second synchronization signal sequence is a sequence obtained by a second Gold sequence, and the second Gold sequence is a sequence generated by a third m sequence and a fourth m sequence, the first m a sequence is the same as a generator polynomial of the third m sequence, the second m sequence being identical to a generator polynomial of the fourth m sequence, wherein a relative shift of the first m sequence and the second m sequence a value of m 1 , a relative shift value of the third m sequence and the fourth m sequence is m 2 , m 1 ⁇ m 2 (modN), the first m sequence, the second m sequence,
  • the third m sequence, and the fourth m sequence
  • the mapping unit 802 is configured to map the first synchronization signal sequence to the M subcarriers of the first time unit to obtain a first synchronization signal, and map the second synchronization signal sequence to the M subcarriers of the second time unit. Obtaining a second synchronization signal, where M, N is a positive integer greater than one;
  • the sending unit 803 is configured to send the first synchronization signal and the second synchronization signal.
  • the first synchronization signal sequence is a sequence obtained by the first Gold sequence
  • the first Gold sequence is a sequence generated by the first m sequence f 1 (n) and the second m sequence f 2 (n).
  • the second synchronization signal sequence is a sequence obtained by a second Gold sequence
  • the second Gold sequence is a sequence generated by a third m sequence f 3 (n) and a fourth m sequence f 4 (n)
  • the relative shift value between the sequence and the second m sequence is m 1 ; the second Gold sequence, the third
  • first synchronization signal sequence and the second synchronization signal sequence described in this embodiment may refer to the sequence described in the foregoing embodiments.
  • k is an integer less than or equal to N-1
  • k 1 is an integer less than or equal to 2 (N-1).
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • another embodiment of the user equipment in this embodiment of the present application includes:
  • the receiving unit 901 is configured to receive the first received signal and the second received signal
  • the generating unit 902 is configured to generate a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence, where the first local synchronization signal sequence is a sequence obtained by the first Gold sequence
  • the first Gold sequence is a sequence generated by a first m sequence and a second m sequence
  • the second local synchronization signal sequence is a sequence obtained by a second Gold sequence
  • the second Gold sequence is a third sequence a sequence generated by the m sequence and the fourth m sequence
  • the first m sequence being the same as the generator polynomial of the third m sequence
  • the second m sequence being the same as the generator polynomial of the fourth m sequence
  • the relative shift value of the first m sequence and the second m sequence is m 1
  • the relative shift values of the third m sequence and the fourth m sequence are m 2 , m 1 ⁇ m 2 (modN , the first m sequence, the second m sequence
  • the processing unit 903 is configured to process the first received signal and the second received signal according to the local synchronization signal sequence.
  • the first local synchronization signal sequence is a sequence obtained by a first Gold sequence
  • the first Gold sequence is a sequence generated by the first m sequence f 1 (n) and the second m sequence f 2 (n)
  • the second local synchronization signal sequence is a sequence obtained by the second Gold sequence
  • the second Gold sequence is a sequence generated by the third m sequence f 3 (n) and the fourth m sequence f 4 (n)
  • first local synchronization signal sequence, the second local synchronization signal sequence, the first m sequence, the second m sequence, the third m sequence, and the like described in this embodiment may refer to related descriptions in the foregoing embodiments.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • another embodiment of a network device in this embodiment of the present application includes:
  • a generating unit 1001 configured to generate a first synchronization signal sequence and a second synchronization signal sequence, where the second synchronization signal sequence is a sequence obtained by the first m sequence and the second m sequence, the first m sequence and the The relative shift value of the second m sequence is m, and the cyclic shift value is p, and the value range of the p does not include a cyclic shift value k strongly correlated with the first synchronization signal sequence, the first m
  • the sequence and the second m sequence are of a length N;
  • the mapping unit 1002 is configured to map the first synchronization signal sequence to the M subcarriers of the first time unit to obtain a first synchronization signal, and the second synchronization signal sequence
  • a second synchronization signal is obtained on the M subcarriers mapped to the second time unit, where M, N is a positive integer greater than 1; and a transmitting unit 1003 is configured to send the first synchronization signal and the second synchronization signal.
  • the network device generates a first synchronization signal sequence and a second synchronization signal sequence with a small correlation value, that is, a primary synchronization signal sequence and a secondary synchronization signal sequence, which reduces cross-correlation between the secondary synchronization signal and the primary synchronization signal. Therefore, it is possible to reduce interference of the secondary synchronization signal of the other cell or the local cell to the primary synchronization signal.
  • another embodiment of the user equipment in this embodiment of the present application includes:
  • the receiving unit 1101 is configured to receive the first received signal and the second received signal
  • the generating unit 1102 is configured to generate a local synchronization signal sequence, where the local synchronization signal sequence includes a first local synchronization signal sequence and a second local synchronization signal sequence.
  • the second local synchronization signal sequence is a sequence obtained by the first m sequence and the second m sequence, and the relative shift value of the first m sequence and the second m sequence is m, and the cyclic shift value is p
  • the value range of the p does not include a cyclic shift value k that is strongly correlated with the first synchronization signal sequence, and the length of the first m sequence and the second m sequence is N, and the N is greater than 1.
  • the processing unit 1103 is configured to process the first received signal and the second received signal according to the local synchronization signal sequence.
  • first synchronization signal sequence, the second synchronization signal sequence, and the like described in this embodiment can refer to related descriptions in the foregoing various embodiments.
  • the user equipment uses the generated first local synchronization signal sequence and the second local synchronization signal sequence, that is, the primary local synchronization signal sequence and the secondary local synchronization signal sequence, respectively, to the first received signal and the second
  • the received signal is processed to reduce the probability of false detection between the secondary local synchronization signal and the primary local synchronization signal, thereby improving the detection performance of the first received signal and the second received signal.
  • the first synchronization signal is a primary synchronization signal and the second synchronization signal is a secondary synchronization signal.
  • the first local synchronization signal is a local primary synchronization signal and the second local synchronization signal is a local secondary synchronization signal.
  • the primary synchronization signal is used to determine the basic time-frequency synchronization, or the center of the channel, and the secondary synchronization signal is used to determine the identity information of the cell.
  • the network device and the user equipment in the embodiment of the present application are described in detail from the perspective of the modular functional entity.
  • the network device and the user equipment in the embodiment of the present application are described in detail below.
  • FIG. 12a is a schematic structural diagram of a user equipment according to an embodiment of the present application, with reference to Figure 12a.
  • FIG. 12a shows a possible structural diagram of the user equipment involved in the above embodiment.
  • the user equipment 1200 includes a processing unit 1202 and a communication unit 1203.
  • the processing unit 1202 is configured to control and manage the actions of the user equipment.
  • the processing unit 1202 is configured to support the user equipment to perform steps 201 to 202 in FIG. 2, and/or other processes for the techniques described herein.
  • the communication unit 1203 is configured to support communication of the user equipment with other network entities.
  • the user equipment may further include a storage unit 1201 for storing program codes and data of the user equipment.
  • the storage unit 1201 may store various m sequences, synchronization signal sequences, synchronization signals, or generator polynomials, recursive formulas, or various types used to generate synchronization signals or synchronization signals mentioned in the foregoing embodiments. Sequence parameters, etc.
  • the processing unit 1202 may be a processor or a controller, for example, may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (application-specific). Integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor can also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1203 may be a communication interface, a transceiver, a transceiver circuit, etc., wherein the communication interface is a collective name and may include one or more interfaces, such as a transceiver interface.
  • the storage unit 1201 may be a memory.
  • the processing unit 1202 is a processor
  • the communication unit 1203 is a communication interface
  • the storage unit 1201 is a memory
  • the user equipment involved in the embodiment of the present application may be the user equipment shown in FIG. 12b.
  • the user equipment 1210 includes a processor 1212, a communication interface 1213, and a memory 1212.
  • the user equipment 1210 may further include a bus 1214.
  • the communication interface 1213, the processor 1212, and the memory 1212 may be connected to each other through a bus 1214; the bus 1214 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA). Bus, etc.
  • the bus 1214 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 12b, but it does not mean that there is only one bus or one type of bus.
  • the memory 1212 may store various m sequences, synchronization signal sequences, synchronization signals, or generator polynomials, recursive formulas, or various types of synchronization signals or synchronization signals mentioned in the foregoing embodiments. Sequence parameters, etc.
  • FIG. 13 is a schematic block diagram showing the structure of a network device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • the network device 1300 may generate a large difference due to different configurations or performances, and may include one or more central processing units (CPUs). 1301 (eg, one or more processors) and memory 1309, one or more storage media 1308 that store application 13013 or data 1306 (eg, one or one storage device in Shanghai).
  • the memory 1309 and the storage medium 1308 may be short-term storage or persistent storage.
  • the program stored on storage medium 1308 can include one or more modules (not shown), each of which can include a series of instruction operations in the server.
  • the processor 1301 can be configured to communicate with the storage medium 1308 to perform a series of instruction operations in the storage medium 1308 on the network device 1300.
  • the memory 1309 or the storage medium 1308 may store various m sequences, synchronization signal sequences, synchronization signals, or generator polynomials, recursive formulas, or various types of synchronization signals mentioned in the above embodiments. Or parameters of the synchronization signal sequence, etc.
  • Network device 1300 may also include one or more power sources 1302, one or more wired or wireless network interfaces 1303, one or more input and output interfaces 1304, and/or one or more operating systems 1305, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc.
  • power sources 1302 one or more wired or wireless network interfaces 1303, one or more input and output interfaces 1304, and/or one or more operating systems 1305, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
  • wired eg coaxial cable, fiber optic, digital subscriber line (DSL)
  • wireless eg infrared, wireless, microwave, etc.
  • the computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in the embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

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Abstract

本申请公开了一种同步信号的发送方法及相关设备,用于降低辅同步信号和主同步信号之间的相关性,减少主同步信号受到的干扰。本申请方法包括:网络设备生成第一同步信号序列和第二同步信号序列,第一同步信号序列为由第一m序列得到的序列,第二同步信号序列为由Gold序列得到的序列,Gold序列由第二m序列和第三m序列生成,第一m序列的生成多项式与第二m序列的生成多项式相同;网络设备将第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,M,N为大于1的正整数;网络设备发送第一同步信号和第二同步信号。

Description

同步信号的发送方法、同步信号的接收方法及相关设备
本申请要求于2017年5月4日提交中国专利局、申请号为201710309975.6、发明名称为“同步信号的发送方法、同步信号的接收方法及相关设备”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
本申请涉及通信领域,尤其涉及一种同步信号的发送方法、同步信号的接收方法及相关设备。
背景技术
在下一代无线接入网络(new radio,NR)中下行基站通过同步信号来完成下行的时间和频率粗同步,其中,同步信号包括主同步信号(primary synchronization signal,PSS)和辅同步信号(secondary synchronization signal,SSS)。用户设备(user equipment,UE)可以接收主同步信号和辅同步信号,实现同步并获得小区标识信息。用户设备首先检测主同步信号确定中心频点,和基本的时频同步信息,或者部分小区标识信息,然后再利用辅同步信号获得小区标识信息。可能的不同的主同步信号的个数通常较少,例如3个,或者1个。第三代合作伙伴计划(the 3rd generation partnership project,3GPP)讨论了采用最长线性反馈移位寄存器序列来生成主同步信号,同时辅同步信号也可以采用加扰的m序列或者Gold序列来生成第二同步信号,m序列是最长线性移位寄存器序列的简称。通常为了区分主同步信号和辅同步信号,主同步信号序列和辅同步信号序列是不同的。
第五代移动通信技术(5th-Generation,5G)中新同步信号的序列长度可以大于或等于长期演进(long term evolution,LTE)中的同步信号序列长度。利用正交频分复用技术(orthogonal frequency division multiplexing,OFDM)实现同步信号的传输。即主同步信号序列映射到分配给主同步信号的OFDM系统的子载波上,辅同步信号序列映射到分配给辅同步信号的OFDM系统的子载波上。
现有方案中,主同步信号和辅同步信号占用一个OFDM符号,且占用的带宽大小相同,都为N,N是一个整数,例如127。当网络设备检测主同步信号时,其它小区或本小区的辅同步信号会干扰主同步信号的检测。
发明内容
本申请实施例提供了一种同步信号的发送方法、同步信号的接收方法,用于降低辅同步信号和主同步信号之间的相关性,减少主同步信号受到的干扰。
本申请实施例的第一方面提供了一种同步信号的发送方法,包括:网络设备生成由第一m序列得到的第一同步信号序列,和由第一Gold序列得到的第二同步信号序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子 载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M为大于1的正整数;所述网络设备发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第一方面的第一种实现方式中,所述第一同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000001
其中,0≤i≤K,a K=1,a 0=1,K为大于或等于1的正整数,所述第一同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000002
其中,s(n)为所述第一同步信号序列,c(n)为所述第一m序列。本申请实施例对第一同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第一方面的第二种实现方式中,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000003
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000004
其中,b K=1,b 0=1,c K=1,c 0=1,0≤i≤K,K为大于或等于1的正整数,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。本申请实施例对第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第一方面的第三种实现方式中,所述第二同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,为f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,第二同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,第二同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第二同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第二方面提供了一种同步信号的接收方法,包括:用户设备接收第一接收信号和第二接收信号;所述用户设备生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一 m序列得到的序列,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第二方面的第一种实现方式中,所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理包括:所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理;所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理。本申请实施例对处理第一接收信号和第二接收信号的过程进行了细化,使本申请实施例在步骤上更完善。
在一种可能的设计中,在本申请实施例第二方面的第二种实现方式中,所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理包括:所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理,所述第一本地同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000005
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一本地同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000006
其中,s(n)为所述第一本地同步信号序列,c(n)为所述第一m序列。本申请实施例对第一本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第二方面的第三种实现方式中,所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理包括:所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理,该第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000007
Figure PCTCN2018085740-appb-000008
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000009
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),满足g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。本申请实施例对第一本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第二方面的第四种实现方式中,所述第二本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2· f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二本地同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第二本地同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第三方面提供了一种同步信号的发送方法,包括:网络设备生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N;所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;所述网络设备发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第三方面的第一种实现方式中,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列由第三m序列f 3(n)和第四m序列f 4(n)生成,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1;所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;所述第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000010
a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000011
b K=1,b 0=1,满足m 1≠m 2(modN)。本申请实施例对第一同步信号序列和第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第三方面的第二种实现方式中,所述第一同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第一同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,第一同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,第一同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第一同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第四方面提供了一种同步信号的接收方法,包括:用户设备接收第一接收信号和第二接收信号;所述用户设备生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N,N为大于1的正整数;所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第四方面的第一种实现方式中,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,g m,k(n)为所述第一Gold序列,y m,k(n)为所述第一同步信号序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1;所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n) 为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;所述第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000012
Figure PCTCN2018085740-appb-000013
a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000014
b K=1,b 0=1,满足m 1≠m 2(modN)。本申请实施例对第一本地同步信号序列和第二本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第四方面的第二种实现方式中,所述第一本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第一本地同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,第一本地同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,第一本地同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第一本地同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例的第五方面提供了一种同步信号的发送方法,包括:网络设备生成第一同步信号序列和第二同步信号序列,所述第二同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N;所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;所述网络设备发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第五方面的第一种实现方式中,所述第二同步信号序列可以为Gold序列,所述Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,g m,k(n)为Gold序列,f 1(n)和f 2(n)为m序列。本申请实施例对第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
本申请实施例的第六方面提供了一种同步信号的接收方法,包括:用户设备接收第一接收信号和第二接收信号;所述用户设备生成本地同步信号序列,所述本地同步信号序列 包括第一本地同步信号序列和第二本地同步信号序列,所述第二本地同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N,所述N为大于1的正整数;所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第六方面的第一种实现方式中,所述第二本地同步信号序列可以为Gold序列,所述Gold序列由第一m序列f 1(n)和第二m序列f 2(n)生成,满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二本地同步信号序列,g m,k(n)为Gold序列,f 1(n)和f 2(n)为m序列。本申请实施例对第二本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
本申请实施例的第七方面提供了一种网络设备,包括:生成单元,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一m序列得到的序列,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N;映射单元,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;发送单元,用于发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第七方面的第一种实现方式中,所述第一同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000015
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000016
其中,s(n)为所述第一同步信号序列,c(n)为所述第一m序列。本申请实施例对第一同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第七方面的第二种实现方式中,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000017
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000018
其 中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,第一Gold序列、第二m序列和第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。本申请实施例对第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第七方面的第三种实现方式中,所述第二同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,所述第二同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,所述第二同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第二同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第八方面提供了一种用户设备,包括:接收单元,用于接收第一接收信号和第二接收信号;生成单元,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一m序列得到的序列,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;处理单元,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第八方面的第一种实现方式中,所述处理单元包括:第一处理子单元,用于根据所述第一本地同步信号序列对第一接收信号进行相关处理;第二处理子单元,用于根据所述第二本地同步信号序列对第二接收信号进行相关处理。本申请实施例对处理第一接收信号和第二接收信号的过程进行了细化,使本申请实施例在步骤上更完善。
在一种可能的设计中,在本申请实施例第八方面的第二种实现方式中,所述第一处理子单元具体用于:根据所述第一本地同步信号序列对第一接收信号进行相关处理,所述第一本地同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,...,N-1} 的生成多项式为
Figure PCTCN2018085740-appb-000019
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一本地同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000020
Figure PCTCN2018085740-appb-000021
其中,s(n)为所述第一本地同步信号序列,c(n)为所述第一m序列。本申请实施例对第一本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第八方面的第三种实现方式中,所述第二处理子单元具体用于:根据所述第二本地同步信号序列对第二接收信号进行相关处理,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000022
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000023
其中,b K=1,b 0=1,c K=1,c 0=1,N、K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。本申请实施例对第一本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第八方面的第四种实现方式中,所述第二本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,所述第二本地同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,所述第二本地同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第二本地同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第九方面提供了一种网络设备,包括:生成单元,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第 二m序列,所述第三m序列,和所述第四m序列的长度为N;映射单元,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;发送单元,用于发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第九方面的第一种实现方式中,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第一m序列f 1(n)和第二m序列f 2(n)生成,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列第三m序列f 3(n)和第四m序列f 4(n)生成,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1;所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;所述第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000024
a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000025
b K=1,b 0=1,满足m 1≠m 2(modN)。本申请实施例对第一同步信号序列和第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第九方面的第二种实现方式中,所述第一同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第一同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,所述第一同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,所述第一同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第一同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例第十方面提供了一种用户设备,包括:接收单元,用于接收第一接收信号和第二接收信号;生成单元,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一 Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N,N为大于1的正整数;处理单元,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第十方面的第一种实现方式中,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第一m序列f 1(n)和第二m序列f 2(n)生成,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列由第三m序列f 3(n)和第四m序列f 4(n)生成,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1;所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;所述第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000026
a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000027
b K=1,b 0=1,满足m 1≠m 2(modN)。本申请实施例对第一本地同步信号序列和第二本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
在一种可能的设计中,在本申请实施例第十方面的第二种实现方式中,所述第一本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第一本地同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,所述第一本地同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,所述第一本地同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小 于等于N-1的整数,k 1为小于等于2(N-1)的整数。本申请实施例提供了第一本地同步信号的可能满足的另一种条件,增加了本申请实施例的实现方式。
本申请实施例的第十一方面提供了一种同步信号的发送方法,包括:网络设备生成第一同步信号序列和第二同步信号序列,所述第二同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N;所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;所述网络设备发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
在一种可能的设计中,在本申请实施例第十一方面的第一种实现方式中,所述第二同步信号序列可以为Gold序列,所述Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,g m,k(n)为Gold序列,f 1(n)和f 2(n)为m序列1本申请实施例对第二同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
本申请实施例的第十二方面提供了一种同步信号的接收方法,包括:用户设备接收第一接收信号和第二接收信号;所述用户设备生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第二本地同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N,所述N为大于1的正整数;所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在一种可能的设计中,在本申请实施例第十二方面的第一种实现方式中,所述第二本地同步信号序列可以为Gold序列,所述Gold序列由第一m序列f 1(n)和第二m序列f 2(n)生成,满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二本地同步信号序列,g m,k(n)为Gold序列,f 1(n)和f 2(n)为m序列。本申请实施例对第二本地同步信号序列进行了限定,增加了本申请实施例的可实现性和可操作性。
本申请的第十三方面提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行以下步骤:生成第一同步信号序列和 第二同步信号序列,所述第一同步信号序列为由第一m序列得到的序列,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N;将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数。
可选的,所述第一同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000028
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000029
Figure PCTCN2018085740-appb-000030
其中,s(n)为所述第一同步信号序列,c(n)为所述第一m序列。
可选的,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000031
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000032
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,第一Gold序列、第二m序列和第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
可选的,所述第二同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第二同步信号序列,为f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。可以理解,将x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),分别代入y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),可知,所述第二同步信号序列y m,k(n)也可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k记为k 1,也就是说k 1=m+k,则,所述第二同步信号序列y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。
可选的,生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一m序列得到的序列,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整;根据所 述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
上技术方案可以看出,本申请实施例具有以下优点:
本申请实施例提供的技术方案中,网络设备生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由m序列得到的序列,所述第二同步信号序列为由Gold序列得到的序列,所述Gold序列由第一m序列和第二m序列生成,所述m序列的生成多项式与所述Gold序列的第一m序列的生成多项式相同;所述网络设备将所述第一同步信号序列和所述第二同步信号序列分别映射到第一时间单元的N个子载波和第二时间单元的N个子载波上,得到第一同步信号和第二同步信号,所述N为大于或等于1的正整数;所述网络设备发送所述第一同步信号和所述第二同步信号。本申请实施例中,网络设备生成的相关值小的主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其他小区或本小区的辅同步信号对主同步信号的干扰。
附图说明
图1a为本申请实施例的网络架构的示意图;
图1b为本申请实施例的一个场景示意图;
图2为本申请实施例同步信号的发送方法的一个实施例示意图;
图3为本申请实施例八进制数值与本原多项式的对应关系示意图;
图4为本申请实施例同步信号具有不同中心频点的一个场景示意图;
图5为本申请实施例同步信号的发送方法的另一个实施例示意图;
图6为本申请实施例中网络设备的一个实施例示意图;
图7为本申请实施例中用户设备的一个实施例示意图;
图8为本申请实施例中网络设备的另一个实施例示意图;
图9为本申请实施例中用户设备的另一个实施例示意图;
图10为本申请实施例中网络设备的另一个实施例示意图;
图11为本申请实施例中用户设备的另一个实施例示意图;
图12a为本申请实施例中用户设备的另一个实施例示意图;
图12b为本申请实施例中用户设备的另一个实施例示意图;
图13为本申请实施例中网络设备的另一个实施例示意图。
具体实施方式
本申请实施例提供了一种同步信号的发送方法,用于降低辅同步信号和主同步信号之间的相关性,减少主同步信号受到的干扰。
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例进行描述。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”或“具有”及其任何变形,意 图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例可应用于如图1a所示的网络架构,在该网络架构中,网络设备(例如,基站)与用户设备(例如,手机)之间进行同步信号的传输,本申请中的传输同步信号的设备称为网络设备。本申请中的实施例以网络设备向用户设备发送同步信号为例进行说明,如图1b所示,当小区1的用户终端检测主同步信号时,小区1和小区2中的辅同步信号会对小区1的主同步信号产生干扰。由于小区2和小区1可能时间不同步,就有可能产生小区2的辅同步信号和小区1的主同步信号在时间上重叠的情况,这时,小区2中的辅同步信号对小区1中的主同步信号产生干扰。小区1中的辅同步信号,也可能干扰小区1中的主同步信号的检测。这是因为,用户终端检测小区1中的主同步信号时,需要在多个时刻,用本地主同步信号序列和接收到的信号进行相关运算,在辅同步信号的时刻,就会和接收到的辅同步信号进行相关,因而受到辅同步信号的干扰。
可以理解的是,网络设备与网络设备之间,用户设备和用户设备之间,也可以进行同步信号的发送与接收,具体此处不做限定。
本申请中网络设备可以是任意一种具有无线收发功能的设备。包括但不限于:全球移动通信系统(Global System for Mobile,GSM)或CDMA中的基站(base transceiver station,BTS),WCDMA中的基站(NodeB),LTE中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),NR中的基站(gNodeB或gNB)或收发点(transmission reception point,TRP),3GPP后续演进的基站,WiFi系统中的接入节点,无线中继节点,无线回传节点等。基站可以是:宏基站,微基站,微微基站,小站,中继站等。多个基站可以支持上述提及的同一种技术的网络,也可以支持上述提及的不同技术的网络。基站可以包含一个或多个共站或非共站的传输接收点(Transmission receiving point,TRP)。网络设备还可以是云无线接入网络(cloud radio access network,CRAN)场景下的无线控制器、集中单元(centralized unit,CU),和/或分布单元(distributed unit,DU)。网络设备还可以是服务器,可穿戴设备,或车载设备等。以下以网络设备为基站为例进行说明。所述多个网络设备可以为同一类型的基站,也可以为不同类型的基站。基站可以与终端设备进行通信,也可以通过中继站与终端设备进行通信。终端设备可以与不同技术的多个基站进行通信,例如,终端设备可以与支持LTE网络的基站通信,也可以与支持5G网络的基站通信,还可以支持与LTE网络的基站以及5G网络的基站的双连接。
本申请中终端设备是一种具有无线收发功能的设备,可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city) 中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。用户设备有时也可以称为终端、终端设备、用户设备(user equipment,UE)、接入终端设备、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、终端设备、无线通信设备、UE代理或UE装置等。终端也可以是固定的或者移动的。
根据序列的规则,m序列的生成多项式为
Figure PCTCN2018085740-appb-000033
其中a K=1,a 0=1,生成多项式为g(x)表示生成的序列c(n)={c(n)|n=0,1,2,...,N-1}满足如下递推关系,
Figure PCTCN2018085740-appb-000034
初始状态为c(K-1),c(K-2),c(K-3),...,c(1),c(0),根据初始状态值和递推公式,可以得到序列{c(n)|n=0,1,2,...,N-1}。当生成多项式是K次本原多项式的时候,得到的序列是m序列,其长度为N=2 K-1。
Gold序列是由一对优选的m序列模2加生成的序列,一对优选的m序列,使得不同的Gold序列的互相关较小。f 1(n),f 2(n)是两个长度为N的m序列,g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,是长度为N的Gold序列,其中m=0,1,2,...,N-1,k=0,1,2,...,N-1。m,k的变化,产生了同一组的多个不同的Gold序列。Gold序列的一对m序列,使得同一组的不同的Gold序列的互相关较小。
假定主同步信号生成多项式为g(x)=x 7+x 4+1,也即c(n+7)=(c(n+4)+c(n)mod2,c(n)是m序列,初始状态为1 1 1 0 1 1 0,即c(6)=1,c(5)=1,c(4)=1,c(3)=0,c(2)=1,c(1)=1,c(0)=0。也可以表示为:{c(6),c(5),c(4),c(3),c(2),c(1),c(0)}={1 1 1 0 1 1 0}。进一步将所述m序列经过BPSK调制后映射到N个子载波上,例如,N=127。调制后的主同步信号序列为s(n)=1-2·c(n),n=0,1,…,N-1,可看出这里m序列c(n),以及主同步信号序列s(n)的长度均为N。例如,可以根据3个循环移位(0,43,86)生成3个主同步信号序列。序列{c(n)|n=0,1,2,...,N-1}循环移位序列定义为{c((n+p)modN)|n=0,1,2,...,N-1,其中p=0,1,2,...,N-1是循环移位值。
而辅同步信号序列为两个m序列生成的序列g m,k(n)得到的,例如可以是由生成多项式g 1(x)=x 7+x 3+1,g 2(x)=x 3+x 2+x+1,分别生成的序列f 1(n),f 2(n)得到,g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,初始值1 1 1 0 1 1 0。这里m为两个m序列间的相对移位值,例如,m=0,1,2,...,126,n=0,1,2,...,126。进一步将所述Gold序列经过BPSK调制后映射到N个子载波上,N=127。
y m,k(n)=1-2·g m,k(n),n=0,1,…,N-1,是辅同步信号序列,映射到N个子载波上,这里主同步信号和辅同步信号位于不同的OFDM符号上,例如,N=127。
邻小区的辅同步信号和本小区的主同步信号时间上重叠时,会干扰主同步信号。当UE检测本小区的主同步信号时,辅同步信号和主同步信号相关值较大,也会干扰主同步信号的检测。具体的,对于辅同步信号的上述生成的Gold序列来说,循环移位为0的主同步信号和Gold序列的127个相对移位值(m=0,1,…,126)对应的循环移位值为k m的序列的 最大相关值如下:{33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33,29,25,31,41,29,33,33}。
k m为如下值:
{20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20}。
通常的一组Gold序列内的不同序列的最大相关值为17,上述相关值明显比17要大不少,导致辅同步信号对主同步信号干扰较大。
为便于理解,下面对本申请实施例的具体流程进行描述,本申请实施例及后续实施例中,请参阅图2,本申请实施例中同步信号的发送方法的一个实施例包括:
201、网络设备生成第一同步信号序列和第二同步信号序列。
网络设备生成第一同步信号序列和第二同步信号序列,该第一同步信号序列为由第一m序列得到的序列,该第二同步信号序列为由第一Gold序列得到的序列,第一Gold序列由第二m序列和第三m序列生成,第一m序列的生成多项式与第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数。
需要说明的是,第一同步信号序列由第一m序列得到的序列,网络设备根据生成多项式
Figure PCTCN2018085740-appb-000035
得到m序列{c(n)|n=0,1,2,...,N-1},多项式的系数取值可以为0或1,且a K=1,a 0=1,K为大于1的正整数,0≤i≤K。网络设备在根据第一m序列的初始状态值以及递推公式得到第一同步信号序列,s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000036
s(n)为第一同步信号序列,c(n)为第一m序列。当第一m序列的初始状态值不同时,得到的序列也不同,第一m序列的初始状态值此处不做限定。第二同步信号序列为由第一Gold序列得到的序列,第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000037
第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000038
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于1的正整数,0≤i≤K,该第一Gold序列与第二m序列、第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,g m,k(n)为第一Gold序列,m为 f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
可以理解的是,当生成多项式是K次本原多项式时,得到的第一同步信号序列是m序列,该第一同步信号序列的长度为N,N=2 K-1,例如当K=7时,N=127。K为大于1的整数,具体此处不做限定。第一同步信号序列和第二同步信号序列可以进行循环移位得到具有相同性质的其他序列,例如,第一同步信号序列进行循环移位后得到的序列的性质不变,仍为m信号序列,第二同步信号序列进行循环移位后得到同一组的其他的Gold序列。循环移位序列满足{c((n+p)modN)|n=0,1,2,...,N-1},p=0,1,2,...,N-1,p是循环移位值。具体此处不做限定。
举例说明,当K=7时,N为127,对于第一同步信号而言,其对应的第一同步信号序列为基于第一m序列得到的序列。所述第一m序列的生成多项式为g(x)=x 7+x 4+1,递推公式为c(n+7)=(c(n+4)+c(n))mod2。该第一m序列的初始状态值为{1 1 1 0 1 1 0},即c(6)=1,c(5)=1,c(4)=1,c(3)=0,c(2)=1,c(1)=1,c(0)=0。也就是说,{c(6),c(5),c(4),c(3),c(2),c(1),c(0)}={1 1 1 0 1 1 0}。根据第一m序列的初始值,得到长度为127的第一同步信号的序列{1 1 1 1 1 1 0 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 1 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 1 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0 1 0 0 0 0 1 0 1 0 1 0 1 1 1 1 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0}。
如图3所示,对于第二同步信号而言,其对应的第二同步信号序列为基于第二m序列和第三m序列得到的序序列。所述第二m序列的生成多项式与所述第一同步信号的第一m序列的生成多项式相同例如第二m序列的生成多项式可以表示为g(x)=x 7+x 4+1。第二m序列对应的本原多项式为{1 0 0 1 0 0 0 1},对应一个八进制数值221。例如,所述第三m序列的生成多项式可以是图3中的八进制数值361,375,313,301,325,345,367,271,253,203中任一数值对应的生成多项式,系数a 7,a 6,...,a 1,a 0为图3中每一个本原多项式(即上述的生成多项式)对应的值,a 7是最高位。例如对于数值361,以二进制表示为1 1 1 1 0 0 0 1,其对应的生成多项式为g 2(x)=x 7+x 6+x 5+x 4+1。再例如,八进制数值203,以二进制表示为1 0 0 0 0 0 1 1,对应的生成多项式为g 2(x)=x 7+x+1,对应的递推公式满足c 1(i+7)=(c 1(i+1)+c 1(i))mod2。
可选的,第一同步信号序列和第二同步信号序列都为由Gold序列得到的序列。例如第一同步信号序列为由第一Gold序列得到的序列。所述第一Gold序列为由第一m序列和第二m序列生成的序列。第二同步信号序列为由第二Gold序列得到的序列。所述第二Gold序列为由第三m序列和第四m序列生成的序列。所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同。例如,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述所述第四m序列的相对移位值为m 2,满足m 1≠m 2(modN)。所述第一m序列、所述第二m序列、所述第三m序列,和第四m序列的长度均为N,其中N=2 K-1。
在一种实现方式中,第一同步信号序列y m,k(n)满足y m,k(n)=1-2·g m,k(n),g m,k(n)序列可以为基于第一序列f 1(n)和第二m序列f 2(n)获得的Gold序列。其中g m,k(n)= (f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,m为f 1(n)序列和f 2(n)序列之间的相对移位值。第二同步信号序列y m,k(n)满足y m,k(n)=1-2·g m,k(n),g m,k(n)可以为基于第三m序列f 3(n)和第四m序列f 4(n)获得的Gold序列。其中g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,第三m序列f 3(n)和第四m序列f 4(n)之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值。
第一m序列与第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000039
a K=1,a 0=1,第二m序列与第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000040
b K=1,b 0=1,满足m 1≠m 2(modN)。
202、网络设备得到第一同步信号和第二同步信号。
网络设备将第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,M为大于1的正整数。
需要说明的是,网络设备得到的第一同步信号和第二同步信号,可以是m序列进行调制变换得到的序列,也可以是根据公式直接生成。第一同步信号满足s(n)=1-2·c(n),n=0,1,…,N-1,N为大于1的正整数,s(n)为第一同步信号序列,c(n)为第一m序列。
M=N,或者M=N-1。当M=N时,同步信号序列的N个元素映射到N个子载波上。当M=N-1时,同步信号序列的除了中心元素之外的元素映射到N-1个子载波上。同步信号的序列的中心元素的映射,可以是映射到频域上同步信号的中心子载波,也可以不发射。本发明在此不做限定。
可以理解的是,网络设备可采用二相相移键控(binary phase shift keying,BPSK)的方式对m序列进行调制,得到调制变换后的同步信号序列。网络设备还可以采用其他调制方式对同步信号序列进行调制,具体此处不做限定。
举例说明,当第一m序列为上述步骤中的序列{1 1 1 1 1 1 0 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 1 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 1 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0 1 0 0 0 0 1 0 1 0 1 0 1 1 1 1 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0},经过调制变换后的序列为{-1 -1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 -1 1 1 -1 1 -1 -1 1 1 -1 1 1 -1 1 1 1 -1 1 1 -1 -1 1 1 1 -1 1 -1 -1 -1 1 -1 1 -1 -1 1 -1 -1 1 1 1 1 1 -1 -1 1 1 -1 -1 1 -1 1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1 -1 1 1 1 1 -1 1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 1 1 -1 1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1}。第一Gold序列的调制过程与第一m序列的调制过程类似,具体此处不再赘述。
203、网络设备发送第一同步信号和第二同步信号。
网络设备在承载有第一同步信号序列的子载波上发送第一同步信号,在承载有第二同步信号序列的子载波上发送第二同步信号。
204、用户设备接收第一接收信号和第二接收信号。
用户设备接收网络设备发送的信号,选择接收符合信号质量要求的第一接收信号和第二接收信号。
需要说明的是,用户设备可以对感应到的信号进行接收,在信号质量达到要求的信号中接收需要的第一接收信号和第二接收信号。信号质量可以包括信号强度、信道质量指示信息等。具体此处不做限定。
205、用户设备生成本地同步信号序列。
用户设备生成本地同步信号序列,本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,第一本地同步信号序列为由第一m序列得到的序列,第二本地同步信号序列为由第一Gold序列得到的序列,该第一Gold序列由第二m序列和第三m序列生成,该第一m序列的生成多项式与第一Gold序列的第二m序列的生成多项式相同。
需要说明的是,第一本地同步信号序列由第一m序列得到的序列,用户设备根据生成多项式
Figure PCTCN2018085740-appb-000041
得到第一m序列{c(n)|n=0,1,2,...,N-1},多项式的系数取值可以为0或1,且a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K。用户设备在根据第一m序列的初始状态值以及递推公式得到第一本地同步信号序列,s(n)=1-2·c(n),n=0,1,2,...,N-1,
Figure PCTCN2018085740-appb-000042
Figure PCTCN2018085740-appb-000043
s(n)为第一本地同步信号序列,c(n)为第一m序列。当第一m序列的初始状态值不同时,得到的序列也不同,第一m序列的初始状态值此处不做限定。第二本地同步信号序列为由第一Gold序列得到的序列,Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000044
第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000045
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,该第一Gold序列与第二m序列、第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为第二同步信号序列,g m,k(n)为第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值。
可以理解的是,当生成多项式是K次本原多项式时,得到的第一本地同步信号序列是m序列,该第一本地同步信号序列的长度为N,N=2 K-1,例如当K=7时,N=127。K为大于1的整数,具体此处不做限定。第一本地同步信号序列和第二本地同步信号序列可以进行循环移位得到具有相同性质的其他序列,例如,第一本地同步信号序列进行循环移位后得到的序列,序列的性质不变,仍为m序列,第二本地同步信号序列进行循环移位后的序列,仍为Gold序列。序列{c(n)|n=0,1,2,...,N-1}的循环移位序列满足{c((n+p)modN|n=0,1,2,...,N-1},p=0,1,2,...,N-1,p是循环移位值。或者序列{c(n)|n=0,1,2,...,N-1}的循环移位序列满足{c((n-p)modN)|n=0,1,2,...,N-1},p=0,1,2,...,N-1,p是循环移位值。具体此处不做限定。
在一种实现方式中,用户设备生成本地同步信号序列,本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,第一本地同步信号序列为由第一Gold序列得到的序列,第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,第二本地同 步信号序列为由第二Gold序列得到的序列,第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,第一Gold序列、第一m序列和第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,y m,k(n)为第一同步信号序列,g m,k(n)为第一Gold序列,第一m序列和第二m序列之间的相对移位值为m 1;第二Gold序列、第三m序列和第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为第二同步信号序列,g m,k(n)为第二Gold序列,第三m序列和第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;第一m序列与第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000046
a K=1,a 0=1,第二m序列与第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000047
b K=1,b 0=1,满足m 1≠m 2(modN)。在本发明的所有实施例中,涉及到m 1≠m 2(modN)时,当系统中有多个辅同步信号序列时,每个辅同步信号序列的相对移位值都满足m 1≠m 2(modN)。
206、用户设备对第一接收信号和第二接收信号进行处理。
用户设备根据本地同步信号序列对第一接收信号和第二接收信号进行处理,本地同步信号包括第一本地同步信号和第二本地同步信号。
需要说明的是,接收信号包括第一接收信号和第二接收信号,用户设备对接收信号的进行相关运算。第一接收信号和第二接收信号可以相同,例如都是一段时间内接收到的信号,也可以不同,例如不同时间段接收到的信号。
本申请实施例中,网络设备生成的相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,当用户设备检测本小区的主同步信号时,能够减少其他小区或本小区的辅同步信号对该主同步信号的干扰。进一步保证在不同的中心频点搜索主同步信号时,不会因为频点的不同和其他同步信号形成强相关。
需要说明的是,本发明中的各个实施例中的数学符号及字母本身并不对发明做出限定,例如本发明实施例中第一m序列用f 1(n)表示,也可以用其它函数符号或序列符号表示,例如a(n)或a 1(n)或x(n)。在具体实施过程中,上述序列可以是按照特定顺序、或满足一定关系存储的数据,并进行数学计算或处理。
如图4所示,主同步检测的时候,假设的频率中心的为中心1,而实际发送的同步信号的中心位置为中心2,如果主同步信号采用的Gold序列和辅同步信号采用的Gold序列的相对移位值m 1=m 2(modN),通过不同的移位值k进行区分,当检测时假设的中心和实际辅同步信号发射的中心不同时,就有可能导致在频域上重叠的部分完全相同,而导致相关值较大。本发明的方案使得m 1≠m 2(modN),因此相关值较小,干扰较小。
可以理解的是,用户设备对不同接收信号的处理过程不同,例如,主同步信号的检测和辅同步信号的检测不同,对主同步信号检测的时候,接收侧的设备需要假设主同步信号的中心频率,根据假设的主同步信号的中心频率,得到接收到的信号,利用生成的本地主同步信号序列和接收到的信号进行相关运算。对辅同步信号进行检测的时候,是在主同步信号已经检测到的情况下进行的,接收侧设备可以根据检测到的主同步信号的中心,得到 辅同步信号的中心(主同步信号的中心和辅同步信号的中心通常是相同的)。主同步信号的中心可能的频点是f 0+n×f R,n是整数,f 0是初始频率,f R是信道间隔,可以是预先定义的。例如信道间隔f R值可以取100KHz,180KHz,300KHz等等,而且随着不同的频带(Frequency Band),f R值可以不同。例如高频率的时候3GHz以下,3GHz-6GHz,6GHz-52.6GHz可以有不同的信道间隔值。
主同步信号序列可以有多个,例如3个。网络设备根据小区标识确定使用其中的一个。在一种实现方式中,假设主同步信号序列有三个,其中两个主同步信号序列可以由两个m序列得到,另一个主同步信号序列可以由一个Gold序列得到。所述两个m序列,和生成辅同步信号的Gold序列的两个m序列的生成多项式相同。其中的主同步信号的Gold序列的两个m序列的生成多项式和生成辅同步信号的Gold序列的两个m序列的多项式相同,即属于同一组Gold序列。辅同步信号也可以有多个,相对移位值和循环值的变化,产生不同的Gold序列,不同的Gold序列可以承载小区的标识信息。
主同步信号序列的长度为N,生成主同步信号序列的m序列的3个循环移位值为{0,a 0,a 1},其中N>a 1>a 0>0,设b 0=a 0,b 1=a 1-a 0,b 2=N-a 1。主同步信号的子载波间隔为Δf,则选择a 0,a 1,f R,使得对所有的i=0,1,2,满足(b i×Δf mod fR>Δf,并且fR-bi×Δf mod fR>Δf。其中,对于不同的频带,Δf可以不同,但是每个频带可以是唯一的,即每个频带只有1个值。不同频带的同步信号的序列的长度可以相同。
举例说明,假设N=127,Δf=15KHz,a 0=43,a 1=86,f R=100KHz则b 0=43,b 1=43,b 2=41,就会有b 2×Δfmod f R=15KHz不满足(b 2×Δf)mod f R>Δf,这样如果接收侧设备的频率偏差和发送侧设备的频率偏差大约1个子载波的情况下,接收侧设备在假设主同步信号的中心频点,并根据假设的中心频点搜索主同步信号的时候,中心频点导致的频率偏移会使得假设的同步信号和循环移位为b 0的主同步信号有大概127-b 0=127-42=85个子载波是重叠的。即使中心频点不正确,也会有比较大的相关值,会导致接收侧设备的接收性能下降。选择a 0=42,a 1=84,f R=100KHz,则b 0=42,b 1=42,b 2=43。(b i×Δf)mod f R=30KHz,30KHz,45KHz,分别对i=0,1,2。
f R-(b i×Δf)mod f R=70KHz,70KHz,25KHz,分别对i=0,1,2。满足大于Δf的特性。
另一个例子,f R=180KHz,a 0=43,a 1=86,Δf=30KHz,则b 0=43,b 1=43,b 2=41。
(b i×Δf)mod f R=30KHz,30KHz,150KHz,分别对i=0,1,2。
f R-(b i×Δf)mod f R=150KHz,150KHz,30KHz,分别对i=0,1,2。不满足大于Δf的特性。
如果f R=300KHz,a 0=42,a 1=84,则b 0=42,b 1=42,b 2=43,Δf=30KHz。
(b i×Δf)mod f R=60KHz,60KHz,90KHz,,分别对i=0,1,2。
f R-(b i×Δf)mod f R=240KHz,240KHz,210KHz,分别对i=0,1,2。满足大于Δf的特性。
进一步,对于每个频带,选择的a 0,a 1,f R,都要满足(b i×Δf)mod f R>Δf并且f R-(b i×Δf)mod f R>Δf,其中Δf是所述频带的主同步信号的子载波间隔。符合这个特征的由循环移位值为0,a 0,a 1的m序列的生成的主同步信号序列的发送或接收方法、设备,在进行主同步信号检测的时候,可以减少由于检测同步信道的中心频率而受到的干扰。
结合图5,对本申请实施例提供的同步信号的发送方法另一实施例进行说明。
501、网络设备生成第一同步信号序列和第二同步信号序列。
网络设备生成第一同步信号序列和第二同步信号序列,第二同步信号序列为由第一m序列和第二m序列得到的序列,得到第二同步信号序列的第一m序列与第二m序列的相对移位值为m,循环移位值为p,p的取值范围不包含和第一同步信号序列强相关的循环移位值k,第一m序列和第二m序列的长度为N。
需要说明的是,第二同步信号序列为由第一m序列和第二m序列通过模2加运算得到的序列。即由第一m序列{f 1(n)|n=0,1,2,...,N-1}和第二m序列{f 2(n)|n=0,1,2,...,N-1}通过模2加运算生成,第一m序列的生成多项式为
Figure PCTCN2018085740-appb-000048
第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000049
其中,a K=1,a 0=1,b K=1,b 0=1,K为大于或等于1的正整数,0≤i≤K,第二同步信号序列可以是由gold序列得到,也可以不由gold序列得到。第二同步信号序列、第一m序列、第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为第二同步信号序列,g m,k(n)可以为Gold序列,f 1(n)和f 2(n)为m序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值。当f 1(n)和f 2(n)是优选的m序列对时,g m,k(n)为Gold序列。
可以理解的是,为避免两个同步信号之间的强相关性,第二同步信号中对于一个m序列,使用的循环移位p值不包括和第一同步信号相关值最大的序列对应的循环移位k值。两个相同长度的序列的相关值定义为相同位置的元素共轭相乘后求和得到的值的绝对值。例如,当K=7,N=127时,对于127个相对移位值中任意一个,m=0,1,2,...,126,第二同步信号序列需要避开的循环移位k值为{20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20,16,30,91,95,25,78,20}。
502、网络设备得到第一同步信号和第二同步信号。
网络设备将第一同步信号序列和第二同步信号序列分别映射到第一时间单元的N个子载波和第二时间单元的N个子载波上,得到第一同步信号和第二同步信号,N为大于或等于1的正整数。
需要说明的是,网络设备得到的第一同步信号和第二同步信号,可以是m序列进行调制变换得到的序列,也可以是根据公式直接生成。第一同步信号满足s(n)=1-2· c(n),n=0,1,…,N-1,N为大于1的正整数,s(n)为第一同步信号序列,c(n)为第一m序列。第二同步信号类似第一同步信号,此处不再赘述。
M=N,或者M=N-1。当M=N时,同步信号序列的N个元素映射到N个子载波上。当M=N-1时,同步信号序列的除了中心元素之外的元素映射到N-1个子载波上。同步信号的序列的中心元素的映射,可以是映射到频域上同步信号的中心子载波,也可以不发射。本发明在此不做限定。
可以理解的是,网络设备可采用二相相移键控(binary phase shift keying,BPSK)的方式对m序列进行调制,得到调制变换后的同步信号序列。网络设备还可以采用其他调制方式对同步信号序列进行调制,具体此处不做限定。
503、网络设备发送第一同步信号和第二同步信号。
网络设备在承载有第一同步信号序列的子载波上发送第一同步信号,在承载有第二同步信号序列的子载波上发送第二同步信号。
504、用户设备接收第一接收信号和第二接收信号。
用户设备对接收到的信号进行筛选,选择接收符合信号质量要求第一接收信号和第二接收信号。
本申请实施例中,用户设备传输同步信号的步骤503至步骤504,与图2中的步骤203至步骤204类似,此处不再赘述。
505、用户设备生成本地同步信号序列。
用户设备生成本地同步信号序列,本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,第二本地同步信号序列为由第一m序列和第二m序列得到的序列,得到第二本地同步信号序列的第一m序列与第二m序列的相对移位值为m,循环移位值为p,p的取值范围不包含和第一同步信号序列强相关的循环移位值k。
可以理解的是,第二本地同步信号序列可以由Gold序列得到,Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1。
506、用户设备对第一接收信号和第二接收信号进行处理。
用户设备根据本地同步信号序列对第一接收信号和第二接收信号进行处理,本地同步信号包括第一本地同步信号和第二本地同步信号。
需要说明的是,接收信号包括第一接收信号和第二接收信号,用户设备对接收信号进行相关操作。
本申请实施例中,网络设备生成的相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,当用户设备检测本小区的主同步信号时,能够减少其他小区或本小区的辅同步信号对该主同步信号的干扰。
请参阅图6,本申请实施例中网络设备的一个实施例包括:
生成单元601,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号 序列为由第一m序列得到的序列,所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N;
映射单元602,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
发送单元603,用于发送所述第一同步信号和所述第二同步信号。
本发明实施例提供一种生成同步信号的方法,所述同步信号可以包括第一同步信号,和第二同步信号。所述第一同步信号和第二同步信号可以为申请各实施例中提及的所述第一同步信号和所述第二同步信号。例如第一同步信号可以为主同步信号,第二同步信号可以为辅同步信号。第一同步信号基于第一同步信号序列生成。第二同步信号基于第二同步信号序列生成。
在一种可能的实现方式中,所述第一同步信号序列s(n)满足s(n)=1-2·c(n),n=0,1,2,...,N-1,其中c(n)为第一m序列。所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000050
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K。其中,
Figure PCTCN2018085740-appb-000051
Figure PCTCN2018085740-appb-000052
所述第一m序列c(n)的生成多项式为g(x)=x 7+x 4+1,递推公式为c(n+7)=(c(n+4)+c(n))mod2。
一种可能的实现方式中,第二同步信号序列y m,k(n)满足:y m,k(n)=1-2·g m,k(n),n=0,1,2,...,N-1,其中,g m,k(n)为基于第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}得到的序列。例如g m,k(n)可以为Gold序列。所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000053
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000054
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K其中,g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
在另一种可能的实现方式中,所述第二同步信号序列y m,k(n)满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN)       (公式1),
其中x 1(n)=1-2·f 1(n)    (公式2),
x 2(n)=1-2·f 2(n)    (公式3),
其中n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,f 1(n)为第二m序列,f 2(n)为第三m序列。
可以理解,将公式2与公式3代入公式1,可以得到:
y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN],   (公式4),
简化起见,可以将m+k看做为k 1,也就是说k 1=m+k,则,公式4还可以表示为:
y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],    (公式5),
其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。
在一种可能的实现方式中,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式与所述第二m序列f 1(n)的生成多项式相同,例如,第一m序列的生成多项式为g(x)=x 7+x 4+1,递推公式为c(n+7)=(c(n+4)+c(n))mod2,第二m序列的生成多项式为g(x)=x 7+x 4+1,递推公式为f 1(n+7)=(f 1(n+4)+f 1(n))mod2。
通过上述实施例得到的第一同步信号序列和第二同步信号序列的相关值小,即主同步信号序列和辅同步信号序列的相关值小,因此辅同步信号和主同步信号之间的互相关性得以降低,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
请参阅图7,本申请实施例中用户设备的另一个实施例包括:
接收单元701,用于接收第一接收信号和第二接收信号;
生成单元702,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一m序列得到的序列,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列和第三m序列生成,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;
处理单元703,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
可选的,处理单元703可进一步包括:
第一处理子单元7031,用于根据所述第一本地同步信号序列对第一接收信号进行相关处理:
第二处理子单元7032,用于根据所述第二本地同步信号序列对第二接收信号进行相关处理。
可选的,第一处理子单元7031可具体用于:
根据所述第一本地同步信号序列对第一接收信号进行相关处理,所述第一本地同步信号序列为由第一m序列得到的序列。所述第一本地同步信号序列s(n)满足:s(n)=1-2·c(n),n=0,1,2,...,N-1,其中c(n)为第一m序列。所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000055
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,其中,
Figure PCTCN2018085740-appb-000056
Figure PCTCN2018085740-appb-000057
第一m序列c(n)的生成多项式为g(x)=x 7+x 4+1,递推公式为c(n+7)=(c(n+4)+c(n))mod2。
可选的,第一本地同步信号序列也可以满足上各实施例中所述的第一同步信号序列生成方式生成,具体参照上述各实施例中的相关描述,在此不再赘述。
可选的,第二处理子单元7032可具体用于:
根据所述第二本地同步信号序列对第二接收信号进行相关处理。
在一种实现方式中,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,...,N-1}和第三m序列{f 2(n)|n=0,1,2,...,N-1}生成,所述第二m序列的生成多项式为
Figure PCTCN2018085740-appb-000058
所述第三m序列的生成多项式为
Figure PCTCN2018085740-appb-000059
其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
在另一种实现方式中,所述第二本地同步信号序列y m,k(n)满足:
y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN,其中x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),其中,n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,f 1(n)为第二m序列,f 2(n)为第三m序列。
可以理解,y m,k(n)也可以表示为:
y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN],
简化起见,可以将m+k看做为k 1,也就是说k 1=m+k,则y m,k(n)还可以表示为:
y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],    (公式5),
其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。
在一种可能的实现方式中,所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式与所述第二m序列f 1(n)的生成多项式相同,例如,第一m序列的生成多项式为g(x)=x 7+x 4+1,递推公式为c(n+7)=(c(n+4)+c(n))mod2,第二m序列的生成多项式为g(x)=x 7+x 4+1,递推公式为f 1(n+7)=(f 1(n+4)+f 1(n))mod2。
可选的,第二本地同步信号序列也可以满足上各实施例中所述的第一同步信号序列生成方式生成,具体参照上述各实施例中的相关描述,在此不再赘述。
本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
请参阅图8,本申请实施例中网络设备的另一个实施例包括:
生成单元801,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2, m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N;
映射单元802,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
发送单元803,用于发送所述第一同步信号和所述第二同步信号。
可选的,第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,第一Gold序列、第一m序列和第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为第一同步信号序列,g m,k(n)为第一Gold序列,第一m序列和第二m序列之间的相对移位值为m 1;第二Gold序列、第三m序列和第四m序列满足条件y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为第二同步信号序列,g m,k(n)为第二Gold序列,第三m序列和第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000060
a K=1,a 0=1,第二m序列与第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000061
b K=1,b 0=1,满足m 1≠m 2(modN)。
可选的,所述第一同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,y m,k(n)为所述第一同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。
需要说明的是,本实施例中所述的第一同步信号序列,第二同步信号序列可以是参照上述各个实施例中所描述的序列。
例如,第一同步信号序列s(n)满足:s(n)=1-2·c(n),n=0,1,2,...,N-1,其中c(n)为第一m序列。所述第一m序列{c(n)|n=0,1,2,...,N-1}的生成多项式为
Figure PCTCN2018085740-appb-000062
其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K。其中,
Figure PCTCN2018085740-appb-000063
Figure PCTCN2018085740-appb-000064
又例如,第二同步信号序列y m,k(n)满足:y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),其中x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),其中,n=0,1,…,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,f 1(n)为第二m序列,f 2(n)为第三m序列。y m,k(n)还可以表示为:y m,k(n)=[1-2·f 1(n+m+k)modN]·[1-2·f 2(n+k)modN]。简化起见,可以将m+k看做为k 1,也就是说k 1=m+k,则,y m,k(n)还可以表示为:
y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN],其中,n=0,1,…,N-1,k=0,1,2,...,N-1,k 1=0,1,2,...,2(N-1),也就是说n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数。
本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列, 即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
请参阅图9,本申请实施例中用户设备的另一个实施例包括:
接收单元901,用于接收第一接收信号和第二接收信号;
生成单元902,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N,N为大于1的正整数;
处理单元903,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
可选的,所述第一本地同步信号序列为由第一Gold序列得到的序列,第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,第二本地同步信号序列为由第二Gold序列得到的序列,第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,第一Gold序列、第一m序列和第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1;所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,...,N-1,k=0,1,2,...,N-1,m=0,1,2,...,N-1,k为循环移位值;所述第一m序列与所述第三m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000065
Figure PCTCN2018085740-appb-000066
a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
Figure PCTCN2018085740-appb-000067
b K=1,b 0=1,满足m 1≠m 2(modN)。
可以理解,本实施例中所述的第一本地同步信号序列,第二本地同步信号序列,第一m序列,第二m序列,第三m序列等可以参照上述各个实施例中的相关描述。
本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
请参阅图10,本申请实施例中网络设备的另一个实施例包括:
生成单元1001,用于生成第一同步信号序列和第二同步信号序列,所述第二同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对 移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N;映射单元1002,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;发送单元1003,用于发送所述第一同步信号和所述第二同步信号。
本申请实施例中,网络设备生成相关值小的第一同步信号序列和第二同步信号序列,即主同步信号序列和辅同步信号序列,降低了辅同步信号和主同步信号之间的互相关性,从而能够减少其它小区或本小区的辅同步信号对主同步信号的干扰。
请参阅图11,本申请实施例中用户设备的另一个实施例包括:
接收单元1101,用于接收第一接收信号和第二接收信号;生成单元1102,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第二本地同步信号序列为由第一m序列和第二m序列得到的序列,所述第一m序列与所述第二m序列的相对移位值为m,循环移位值为p,所述p的取值范围不包含和所述第一同步信号序列强相关的循环移位值k,所述第一m序列和第二m序列的长度为N,所述N为大于1的正整数;处理单元1103,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
可以理解,本实施例中所述的第一同步信号序列,第二同步信号序列等可以参照上述各个实施例中的相关描述。
本申请实施例中,用户设备用生成的相关值小的第一本地同步信号序列和第二本地同步信号序列,即主本地同步信号序列和辅本地同步信号序列分别对第一接收信号和第二接收信号进行处理,降低了辅本地同步信号和主本地同步信号之间的误检概率,从而能提高第一接收信号和第二接收信号的检测性能。
在本发明的所有实施例中,第一同步信号是主同步信号,第二同步信号是辅同步信号。第一本地同步信号是本地主同步信号,第二本地同步信号是本地辅同步信号。主同步信号用来进行确定基本的时频同步,或者信道的中心,辅同步信号用来确定小区的标识信息。
上面图6至图11从模块化功能实体的角度分别对本申请实施例中的网络设备和用户设备进行详细描述,下面从硬件处理的角度对本申请实施例中的网络设备和用户设备进行详细描述。
图12a是本申请实施例提供的一种用户设备结构示意图,参考图12a。在采用集成的单元的情况下,图12a示出了上述实施例中所涉及的用户设备的一种可能的结构示意图。用户设备1200包括:处理单元1202和通信单元1203。处理单元1202用于对用户设备的动作进行控制管理,例如,处理单元1202用于支持用户设备执行图2中的步骤201至步骤202,和/或用于本文所描述的技术的其它过程。通信单元1203用于支持用户设备与其他网络实体的通信。用户设备还可以包括存储单元1201,用于存储用户设备的程序代码和数据。可选的,所述存储单元1201可以存储上述各实施例中提及的各种m序列,同步信号序列,同步信号,或生成多项式,递推公式,或各种用于生成同步信号或同步信号序列的参数等。
其中,处理单元1202可以是处理器或控制器,例如可以是中央处理器(central processing unit,CPU),通用处理器,数字信号处理器(digital signal processor,DSP),专用集成电路(application-specific integrated circuit,ASIC),现场可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。通信单元1203可以是通信接口、收发器、收发电路等,其中,通信接口是统称,可以包括一个或多个接口,例如收发接口。存储单元1201可以是存储器。
当处理单元1202为处理器,通信单元1203为通信接口,存储单元1201为存储器时,本申请实施例所涉及的用户设备可以为图12b所示的用户设备。
参阅图12b所示,该用户设备1210包括:处理器1212、通信接口1213、存储器1212。可选的,用户设备1210还可以包括总线1214。其中,通信接口1213、处理器1212以及存储器1212可以通过总线1214相互连接;总线1214可以是外设部件互连标准(peripheral component interconnect,PCI)总线或扩展工业标准结构(extended industry standard architecture,EISA)总线等。总线1214可以分为地址总线、数据总线、控制总线等。为便于表示,图12b中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。可选的,所述存储器1212,可以存储上述各实施例中提及的各种m序列,同步信号序列,同步信号,或生成多项式,递推公式,或各种用于生成同步信号或同步信号序列的参数等。
图13是与本申请实施例提供的网络设备的结构示意框图。参考图13。图13是本申请实施例提供的一种网络设备的结构示意图,该网络设备1300可因配置或性能不同而产生比较大的差异,可以包括一个或一个以上中央处理器(Central processing units,CPU)1301(例如,一个或一个以上处理器)和存储器1309,一个或一个以上存储应用程序13013或数据1306的存储介质1308(例如一个或一个以上海量存储设备)。其中,存储器1309和存储介质1308可以是短暂存储或持久存储。存储在存储介质1308的程序可以包括一个或一个以上模块(图示没标出),每个模块可以包括对服务器中的一系列指令操作。更进一步地,处理器1301可以设置为与存储介质1308通信,在网络设备1300上执行存储介质1308中的一系列指令操作。可选的,所述存储器1309或存储介质1308可以存储上述各实施例中提及的各种m序列,同步信号序列,同步信号,或生成多项式,递推公式,或各种用于生成同步信号或同步信号序列的参数等。
网络设备1300还可以包括一个或一个以上电源1302,一个或一个以上有线或无线网络接口1303,一个或一个以上输入输出接口1304,和/或,一个或一个以上操作系统1305,例如Windows Server,Mac OS X,Unix,Linux,FreeBSD等等。
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申请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 statedisk,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,上述各个实施例之间可以相互引用或补充,并不影响理解,因此不再赘述。
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 (73)

  1. 一种同步信号生成方法,包括:
    获得第一同步信号序列s(n),所述第一同步信号序列满足:s(n)=1-2·c(n)所述第一同步信号序列的长度为N,N为正整数;
    获得第二同步信号序列y m,k(n),所述第二同步信号序列满足:
    y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN]
    其中,n为小于等于N-1的整数,k为小于等于N-1的整数,k 1为小于等于2(N-1)的整数;
    基于第一同步信号序列生成第一同步信号;以及
    基于第二同步信号序列生成第二同步信号。
  2. 根据权利要求1所述的方法,其特征在于,所述N为127。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第一同步信号为主同步信号,所述第二同步信号为辅同步信号。
  4. 根据权利要求1至3任一项所述的方法,其特征在于,所述获得第一同步信号序列,包括:
    根据所述c(n)的递推公式和所述c(n)的初始值确定所述第一同步信号序列。
  5. 根据权利要求1至4任一项所述的方法,其特征在于,所述序列c(n)的递推公式为:c(n+7)=(c(n+4)+c(n))mod2。
  6. 根据权利要求1至5任一项所述的方法,其特征在于,所述c(n)满足:
    {c(6),c(5),c(4),c(3),c(2),c(1),c(0)}={1 1 1 0 1 1 0}。
  7. 根据权利要求1至6任一项所述的方法,其特征在于,所述序列f 1(n+k 1)和所述序列f 2(n+k)中的一个与所述c(n)的递推公式相同。
  8. 根据权利要求1至7任一项所述的方法,其特征在于,所述第二同步信号序列为基于第二m序列f 1(n)和第三m序列f 2(n)得到的序列,其中第二m序列f 1(n)和第三m序列f 2(n)中的一个序列的递推公式为f(n+7)=(f(n+4)+f(n))mod2。
  9. 根据权利要求1至8任一项所述的方法,其特征在于,所述序列c(n)的生成多项式为g(x)=x 7+x 4+1。
  10. 根据权利要求1至9任一项所述的方法,其特征在于,所述序列f 1(n+k 1)和所述序列f 2(n+k)中的一个与所述序列c(n)的生成多项式相同。
  11. 根据权利要求1至10任一项所述的方法,其特征在于,所述序列c(n)为:
    {1 1 1 1 1 1 0 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 1 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 1 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0 1 0 0 0 0 1 0 1 0 1 0 1 1 1 1 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0}。
  12. 根据权利要求1至11任一项所述的方法,其特征在于,所述第一同步信号为{-1 -1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 -1 1 1 -1 1 -1 -1 1 1 -1 1 1 -1 1 1 1 -1 1 1 -1 -1 1 1 1 -1 1 -1 -1 -1 1 -1 1 -1 -1 1 -1 -1 1 1 1 1 1 -1 -1 1 1 -1 -1 1 -1  1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1 -1 1 1 1 1 -1 1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 1 1 -1 1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1}。
  13. 根据权利要求1至12任一项所述的方法,其特征在于,所述f 1(n+k 1)和所述序列f 2(n+k)中的一个的递推公式为:f(i+7)=(f(i+1)+f(i))mod2。
  14. 根据权利要求1至13任一项所述的方法,还包括:保存所述第一同步信号序列,或者保存所述第二同步信号序列,或者保存所述第一同步信号序列和第二同步信号序列。
  15. 根据权利要求1至13任一项所述的方法,其特征在于,所述方法还包括:
    输出所述第一同步信号和所述第二同步信号。
  16. 根据权利要求1至13任一项所述的方法,其特征在于,所述方法还包括:
    获取第三同步信号和第四同步信号,根据所述第一同步信号处理所述第三同步信号,根据所述第二同步信号处理所述第四同步信号。
  17. 一种通信设备,其特征在于,所述通信设备被配置用于执行如权利要求1至16任一项所述的方法。
  18. 一种通信设备,其特征在于,包括:
    处理器,用于获得第一同步信号序列s(n),所述第一同步信号序列满足:s(n)=1-2·c(n)所所述第一同步信号序列的长度为N,N为正整数;
    所述处理器,还用于获得第二同步信号序列y m,k(n),所述第二同步信号序列满足:
    y m,k(n)=[1-2·f 1(n+k 1)modN]·[1-2·f 2(n+k)modN]
    其中,n为小于等于N-1的整数,k为小于等于N-1的整数,k1为小于等于2(N-1)的整数;
    所述处理器还用于基于第一同步信号序列生成第一同步信号;以及
    所述处理器还用于基于第二同步信号序列生成第二同步信号。
  19. 根据权利要求18所述的通信设备,其特征在于,所述N为127。
  20. 根据权利要求18或19所述的通信设备,其特征在于,所述第一同步信号为主同步信号,所述第二同步信号为辅同步信号。
  21. 根据权利要求18至20任一项所述的通信设备,其特征在于,所述获得第一同步信号序列,包括:
    根据所述c(n)的递推公式和所述c(n)的初始值确定所述第一同步信号序列。
  22. 根据权利要求18至21任一项所述的通信设备,其特征在于,所述序列c(n)的递推公式为:c(n+7)=(c(n+4)+c(n))mod2。
  23. 根据权利要求18至22任一项所述的通信设备,其特征在于,所述c(n)满足:
    {c(6),c(5),c(4),c(3),c(2),c(1),c(0)}={1 1 1 0 1 1 0}。
  24. 根据权利要求18至23任一项所述的通信设备,其特征在于,所述序列f 1(n+k 1)和所述序列f 2(n+k)中的一个与所述c(n)的递推公式相同。
  25. 根据权利要求18至24任一项所述的通信设备,其特征在于,所述第二同步信号序列为基于第二m序列和第三m序列得到的序列。
  26. 根据权利要求18至25任一项所述的通信设备,其特征在于,所述第一m序列为:
    {1 1 1 1 1 1 0 0 0 0 1 1 1 0 1 1 1 1 0 0 1 0 1 1 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 1 0 1 1 1 0 1 0 1 1 0 1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0 1 0 0 0 0 1 0 1 0 1 0 1 1 1 1 1 0 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 0}。
  27. 根据权利要求18至26任一项所述的通信设备,其特征在于,所述第一同步信号为{-1 -1 -1 -1 -1 -1 1 1 1 1 -1 -1 -1 1 -1 -1 -1 -1 1 1 -1 1 -1 -1 1 1 -1 1 1 -1 1 1 1 -1 1 1 -1 -1 1 1 1 -1 1 -1 -1 -1 1 -1 1 -1 -1 1 -1 -1 1 1 1 1 1 -1 -1 1 1 -1 -1 1 -1 1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1 -1 1 1 1 1 -1 1 -1 1 -1 1 -1 -1 -1 -1 -1 1 -1 1 1 -1 1 -1 1 1 -1 -1 -1 1 1 -1 -1 -1 -1 1 -1 -1 1}。
  28. 根据权利要求18至27任一项所述的通信设备,其特征在于,所述f 1(n+k 1)和所述序列f 2(n+k)中的一个的递推公式为:f(i+7)=(f(i+1)+f(i))mod2。
  29. 根据权利要求18至28任一项所述的通信设备,其特征在于,所述通信设备还包括:
    发送器,用于输出所述第一同步信号和所述第二同步信号。
  30. 根据权利要求18至28任一项所述的通信设备,其特征在于,所述方法还包括:
    获取第三同步信号和第四同步信号,根据所述第一同步信号处理所述第三同步信号,
    根据所述第二同步信号处理所述第四同步信号。
  31. 根据权利要求18至29任一项所述的通信设备,其特征在于,还包括:
    发送器,用于发送所述同步信号。
  32. 根据权利要求18至28任一项所述的通信设备,其特征在于,还包括:
    接收器,用于接收第三同步信号和第四同步信号;
    所述处理器,还用于根据所述第一同步信号处理所述第三同步信号,根据所述第二同步信号处理所述第四同步信号。
  33. 一种存储介质,其特征在于,所述存储介质存储程序,所述程序由处理器执行,用于使得权利要求1至13任一项所述的方法被实现。
  34. 一种系统,其特征在于,包括第一设备和第二设备,所述第一设备还用于执行权利要求1至14任一项所述的方法,所述第一设备还用于发送所述第一同步信号和所述第二同步信号;
    所述第二设备用于执行权利要求1至14任一项所述方法,所述第二设备还用于接收所述第一同步信号和所述第二同步信号。
  35. 一种同步信号的发送方法,其特征在于,包括:
    网络设备生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为基于第一m序列得到的序列,所述第二同步信号序列为基于第二m序列和第三m序列得到的序列,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N;
    所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一 同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
    所述网络设备发送所述第一同步信号和所述第二同步信号。
  36. 根据权利要求35所述的发送方法,其特征在于,
    所述第一同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,…,N-1}的生成多项式为
    Figure PCTCN2018085740-appb-100001
    其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,…,N-1,
    Figure PCTCN2018085740-appb-100002
    Figure PCTCN2018085740-appb-100003
    其中,s(n)为所述第一同步信号序列,c(n)为所述第一m序列。
  37. 根据权利要求35所述的发送方法,其特征在于,
    所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,…,N-1}和第三m序列{f 2(n)|n=0,1,2,…,N-1}生成,所述第二m序列的生成多项式为
    Figure PCTCN2018085740-appb-100004
    所述第三m序列的生成多项式为
    Figure PCTCN2018085740-appb-100005
    Figure PCTCN2018085740-appb-100006
    其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
  38. 根据权利要求35至37中任一项所述的发送方法,其特征在于,所述第二同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第二同步信号序列,为f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。
  39. 根据权利要求35至38中任一项所述的发送方法,其特征在于,
    所述第一同步信号序列的生成多项式为g(x)=x 7+x 4+1,所述第一同步信号序列中的元素{c(n)|n=0,1,2,…,N-1}满足递推公式c(n+7)=(c(n+4)+c(n))mod2。
  40. 根据权利要35至37任一项所述的发送方法,其特征在于,所述第二同步信号序列为由第一gold序列得到的序列,所述第一gold序列由所述第二m序列和所述第三m序列生成。
  41. 一种同步信号的接收方法,其特征在于,包括:
    用户设备接收第一接收信号和第二接收信号;
    所述用户设备生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为基于第一m序列得到的序列,所述第二本地同步信号序列为基于第二m序列和第三m序列得到的序列,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;
    所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
  42. 根据权利要求41所述的接收方法,其特征在于,所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理包括:
    所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理;
    所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理。
  43. 根据权利要求42所述的接收方法,其特征在于,所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理包括:
    所述用户设备根据所述第一本地同步信号序列对第一接收信号进行相关处理,所述第一本地同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,…,N-1}的生成多项式为
    Figure PCTCN2018085740-appb-100007
    其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一本地同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,…,N-1,
    Figure PCTCN2018085740-appb-100008
    Figure PCTCN2018085740-appb-100009
    其中,s(n)为所述第一本地同步信号序列,c(n)为所述第一m序列。
  44. 根据权利要求42所述的接收方法,其特征在于,所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理包括:
    所述用户设备根据所述第二本地同步信号序列对第二接收信号进行相关处理,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,…,N-1}和第三m序列{f 2(n)|n=0,1,2,…,N-1}生成,所述第二m序列的生成多项式为
    Figure PCTCN2018085740-appb-100010
    所述第三m序列的生成多项式为
    Figure PCTCN2018085740-appb-100011
    其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
  45. 根据权利要求41至44中任一项所述的接收方法,其特征在于,所述第二本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第二本地同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。
  46. 根据权利要求41至45任一项所述的发送方法,其特征在于,所述第二本地同步信号序列为由第一gold序列得到的序列,所述第一gold序列由所述第二m序列和所述第三m序列生成。
  47. 一种同步信号的发送方法,其特征在于,包括:
    网络设备生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序 列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1和,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N;
    所述网络设备将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
    所述网络设备发送所述第一同步信号和所述第二同步信号。
  48. 根据权利要求47所述的发送方法,其特征在于,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1
    所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,k为循环移位值;
    所述第一m序列与所述第三m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100012
    a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100013
    Figure PCTCN2018085740-appb-100014
    b K=1,b 0=1,满足m 1≠m 2(modN)。
  49. 根据权利要求47或48所述的发送方法,其特征在于,所述第一同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第一同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。
  50. 一种同步信号的接收方法,其特征在于,包括:
    用户设备接收第一接收信号和第二接收信号;
    所述用户设备生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列, 所述第二m序列,所述第三m序列,和所述第四m序列的长度为N,N为大于1的正整数;
    所述用户设备根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
  51. 根据权利要求50所述的接收方法,其特征在于,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1
    所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,k为循环移位值;
    所述第一m序列与所述第三m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100015
    a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100016
    Figure PCTCN2018085740-appb-100017
    b K=1,b 0=1,满足m 1≠m 2(modN)。
  52. 根据权利要求50或51所述的接收方法,其特征在于,所述第一本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第一本地同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。
  53. 一种网络设备,其特征在于,包括:
    生成单元,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为基于第一m序列得到的序列,所述第二同步信号序列为基于第二m序列和第三m序列得到的序列,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N;
    映射单元,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
    发送单元,用于发送所述第一同步信号和所述第二同步信号。
  54. 根据权利要求53所述的网络设备,其特征在于,
    所述第一同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,…,N-1}的生成多项式为
    Figure PCTCN2018085740-appb-100018
    其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,…,N-1,
    Figure PCTCN2018085740-appb-100019
    Figure PCTCN2018085740-appb-100020
    其中,s(n)为所述第一同步信号序列,c(n)为所述第一m序列。
  55. 根据权利要求53所述的网络设备,其特征在于,
    所述第二同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,…,N-1}和第三m序列{f 2(n)|n=0,1,2,…,N-1}生成,所述第二m序列的生成多项式为
    Figure PCTCN2018085740-appb-100021
    所述第三m序列的生成多项式为
    Figure PCTCN2018085740-appb-100022
    Figure PCTCN2018085740-appb-100023
    其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
  56. 根据权利要求53至55中任一项所述的网络设备,其特征在于,所述第二同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第二同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。
  57. 根据权利要求53至56中任一项所述的网络设备,其特征在于,
    所述第一同步信号序列的生成多项式为g(x)=x 7+x 4+1,所述第一同步信号序列中的元素{c(n)|n=0,1,2,…,N-1}满足递推公式c(n+7)=(c(n+4)+c(n))mod2。
  58. 根据权利要53至57任一项所述的网络设备,其特征在于,所述第二同步信号序列为由第一gold序列得到的序列,所述第一gold序列由所述第二m序列和所述第三m序列生成。
  59. 一种用户设备,其特征在于,包括:
    接收单元,用于接收第一接收信号和第二接收信号;
    生成单元,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为基于第一m序列得到的序列,所述第二本地同步信号序列为基于第二m序列和第三m序列得到的序列,所述第一m序列的生成多项式与所述第二m序列的生成多项式相同,所述第一m序列,第二m序列,和所述第三m序列的长度为N,N为大于1的正整数;
    处理单元,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
  60. 根据权利要求59所述的用户设备,其特征在于,所述处理单元包括:
    第一处理子单元,用于根据所述第一本地同步信号序列对第一接收信号进行相关处理;
    第二处理子单元,用于根据所述第二本地同步信号序列对第二接收信号进行相关处理。
  61. 根据权利要求60所述的用户设备,其特征在于,所述第一处理子单元具体用于:
    根据所述第一本地同步信号序列对第一接收信号进行相关处理,所述第一本地同步信号序列为由第一m序列得到的序列,所述第一m序列{c(n)|n=0,1,2,…,N-1}的生成多项 式为
    Figure PCTCN2018085740-appb-100024
    其中,a K=1,a 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一本地同步信号序列与所述第一m序列满足s(n)=1-2·c(n),n=0,1,2,…,N-1,
    Figure PCTCN2018085740-appb-100025
    其中,s(n)为所述第一本地同步信号序列,c(n)为所述第一m序列。
  62. 根据权利要求61所述的用户设备,其特征在于,所述第二处理子单元具体用于:
    根据所述第二本地同步信号序列对第二接收信号进行相关处理,所述第二本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列由第二m序列{f 1(n)|n=0,1,2,…,N-1}和第三m序列{f 2(n)|n=0,1,2,…,N-1}生成,所述第二m序列的生成多项式为
    Figure PCTCN2018085740-appb-100026
    所述第三m序列的生成多项式为
    Figure PCTCN2018085740-appb-100027
    其中,b K=1,b 0=1,c K=1,c 0=1,K为大于或等于1的正整数,0≤i≤K,所述第一Gold序列、所述第二m序列和所述第三m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第一Gold序列,m为f 1(n)序列和f 2(n)序列之间的相对移位值,k为循环移位值。
  63. 根据权利要求59至62中任一项所述的用户设备,其特征在于,所述第二本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第二同步信号序列,f 1(n)为所述第二m序列,f 2(n)为所述第三m序列。
  64. 根据权利要59至63任一项所述的用户设备,其特征在于,所述第二本地同步信号序列为由第一gold序列得到的序列,所述第一gold序列由所述第二m序列和所述第三m序列生成。
  65. 一种网络设备,其特征在于,包括:
    生成单元,用于生成第一同步信号序列和第二同步信号序列,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N;
    映射单元,用于将所述第一同步信号序列映射到第一时间单元的M个子载波上得到第一同步信号,将所述第二同步信号序列映射到第二时间单元的M个子载波上得到第二同步信号,所述M,N为大于1的正整数;
    发送单元,用于发送所述第一同步信号和所述第二同步信号。
  66. 根据权利要求65所述的网络设备,其特征在于,所述第一同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第 三m序列f 3(n)和第四m序列f 4(n)生成的序列,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,中g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1
    所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,k为循环移位值;
    所述第一m序列与所述第三m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100028
    a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100029
    Figure PCTCN2018085740-appb-100030
    b K=1,b 0=1,满足m 1≠m 2(modN)。
  67. 根据权利要求65或66所述的网络设备,其特征在于,所述第一同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第一同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。
  68. 一种用户设备,其特征在于,包括:
    接收单元,用于接收第一接收信号和第二接收信号;
    生成单元,用于生成本地同步信号序列,所述本地同步信号序列包括第一本地同步信号序列和第二本地同步信号序列,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列和第二m序列生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列和第四m序列生成的序列,所述第一m序列与所述第三m序列的生成多项式相同,所述第二m序列与所述第四m序列的生成多项式相同,其中,所述第一m序列和所述第二m序列的相对移位值为m 1,所述第三m序列和所述第四m序列的相对移位值为m 2,m 1≠m 2(modN),所述第一m序列,所述第二m序列,所述第三m序列,和所述第四m序列的长度为N,N为大于1的正整数;
    处理单元,用于根据所述本地同步信号序列对所述第一接收信号和所述第二接收信号进行处理。
  69. 根据权利要求68所述的用户设备,其特征在于,所述第一本地同步信号序列为由第一Gold序列得到的序列,所述第一Gold序列为由第一m序列f 1(n)和第二m序列f 2(n)生成的序列,所述第二本地同步信号序列为由第二Gold序列得到的序列,所述第二Gold序列为由第三m序列f 3(n)和第四m序列f 4(n)生成的序列,所述第一Gold序列、所述第一m序列和所述第二m序列满足y m,k(n)=1-2·g m,k(n),g m,k(n)=(f 1((n+m+k)modN)+f 2((n+k)modN))mod2,其中,y m,k(n)为所述第一同步信号序列,g m,k(n)为所述第一Gold序列,所述第一m序列和所述第二m序列之间的相对移位值为m 1
    所述第二Gold序列、所述第三m序列和所述第四m序列满足y m,k(n)=1-2· g m,k(n),g m,k(n)=(f 3((n+m+k)modN)+f 4((n+k)modN))mod2,其中,y m,k(n)为所述第二同步信号序列,g m,k(n)为所述第二Gold序列,所述第三m序列和所述第四m序列之间的相对移位值为m 2,n=0,1,2,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,k为循环移位值;
    所述第一m序列与所述第三m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100031
    a K=1,a 0=1,所述第二m序列与所述第四m序列的生成多项式相同,为
    Figure PCTCN2018085740-appb-100032
    Figure PCTCN2018085740-appb-100033
    b K=1,b 0=1,满足m 1≠m 2(modN)。
  70. 根据权利要求68或69所述的用户设备,其特征在于,所述第一本地同步信号序列满足y m,k(n)=x 1((n+m+k)modN)·x 2((n+k)modN),x 1(n)=1-2·f 1(n),x 2(n)=1-2·f 2(n),n=0,1,…,N-1,k=0,1,2,…,N-1,m=0,1,2,…,N-1,y m,k(n)为所述第一本地同步信号序列,f 1(n)为所述第一m序列,f 2(n)为所述第二m序列。
  71. 一种存储介质,其特征在于,所述存储介质存储程序,所述程序由处理器执行,用于使得权利要求35至52任一项所述的方法被实现。
  72. 一种系统,其特征在于,包括如权利要求52至58任一项所述的网络设备,和权利要求59至64任一项所述的用户设备。
  73. 一种包含指令的计算机程序产品,当其在计算机上运行时,
    使得计算机执行如权利要求1至16任一项所述的方法,或
    使得计算机执行如权利要求35至52任一项所述的方法。
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110249598B (zh) * 2017-03-03 2023-03-24 苹果公司 基站的装置
AU2018232645B2 (en) * 2017-03-04 2019-11-21 Lg Electronics Inc. Method for transmitting synchronization signal in wireless communication system and apparatus therefor
US10567133B2 (en) * 2017-07-24 2020-02-18 Samsung Electronics Co., Ltd. Method and apparatus for synchronization signals and PBCH block enhancement
KR20190127193A (ko) * 2018-05-03 2019-11-13 삼성전자주식회사 무선통신 시스템에서 그룹캐스트를 위한 동기화 방법 및 장치
CN113810094B (zh) * 2020-06-11 2022-11-25 华为技术有限公司 一种信号传输的方法和通信装置
WO2023044800A1 (en) * 2021-09-24 2023-03-30 Nec Corporation Methods, devices, and computer readable medium for communication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012004834A (ja) * 2010-06-16 2012-01-05 Toshiba Corp 時刻同期システム及び時刻同期方法
EP2316243B1 (en) * 2008-08-22 2016-09-14 QUALCOMM Incorporated Base station synchronization
CN106465374A (zh) * 2014-05-30 2017-02-22 夏普株式会社 终端装置、基站装置以及通信方法
WO2017039293A1 (ko) * 2015-09-02 2017-03-09 삼성전자 주식회사 무선 통신 시스템에서 셀 아이디 결정 방법 및 장치
CN106576319A (zh) * 2014-08-26 2017-04-19 Lg电子株式会社 在无线通信系统中发送和接收同步信号的方法以及执行该方法的装置

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544150A (en) * 1994-04-07 1996-08-06 Medialink Technologies Corporation Method and apparatus for determining and indicating network integrity
FR2809554B1 (fr) * 2000-05-23 2002-08-16 Mitsubishi Electric Telecom Eu Procede de synchronisation d'au moins une station mobile dans un reseau de telecommunication mobile ayant une structure de canal de synchronisation modifiee
EP3361643A1 (en) * 2003-04-01 2018-08-15 NEC Corporation Data processing terminal system and transmitting and receiving method using the same
CN100531011C (zh) * 2005-07-04 2009-08-19 上海原动力通信科技有限公司 确定上行信道冲激响应的方法及多用户联合检测的方法
US8649401B2 (en) * 2007-05-01 2014-02-11 Qualcomm Incorporated Generation and detection of synchronization signal in a wireless communication system
CN101075847A (zh) * 2007-06-25 2007-11-21 北京创毅视讯科技有限公司 一种移动多媒体系统中的同步信号发送方法
FR2917873B1 (fr) * 2007-06-25 2009-09-18 Valeo Securite Habitacle Sas Procede de transmission d'informations entre identifiants de vehicule
TWI466478B (zh) * 2007-09-14 2014-12-21 Koninkl Philips Electronics Nv 致能非同步無線裝置間的通信之裝置及方法
US8503547B2 (en) * 2007-10-11 2013-08-06 Qualcomm Incorporated Scrambling codes for secondary synchronization codes in wireless communication systems
CN101931884B (zh) * 2009-06-23 2016-05-18 北京三星通信技术研究有限公司 一种数据同步方法和系统
CN102209377B (zh) * 2010-03-31 2015-01-28 中兴通讯股份有限公司 辅同步信号的生成方法和装置
WO2013056421A1 (zh) * 2011-10-18 2013-04-25 中兴通讯股份有限公司 一种小区搜索方法及系统
WO2013141583A1 (ko) * 2012-03-19 2013-09-26 엘지전자 주식회사 무선 통신 시스템에서 참조 신호 전송 방법 및 장치
CN103428818B (zh) * 2012-05-24 2017-02-15 华为技术有限公司 终端设备发现的方法、设备及系统
JP6026673B2 (ja) * 2012-12-04 2016-11-16 ノキア ソリューションズ アンド ネットワークス オサケユキチュア 物理セル識別符号の割り当て
CN103905363B (zh) * 2012-12-28 2018-01-26 展讯通信(上海)有限公司 辅同步信号检测方法、装置和网络模式判断方法
US20160095077A1 (en) * 2013-04-30 2016-03-31 Intellectual Discovery Co., Ltd. New tdd frame structure for uplink centralized transmission
CN110365366B (zh) * 2013-11-01 2021-09-03 华为技术有限公司 发送器、接收器以及生成同步信号的方法
WO2015114562A1 (en) * 2014-01-30 2015-08-06 Telefonaktiebolaget L M Ericsson (Publ) Cell id expansion and hierarchical cell id structures
US20170006563A1 (en) * 2014-01-31 2017-01-05 Telefonaktiebolaget Lm Ericsson (Publ) Monitoring Synchronization Signals in Device-to-Device Communication
WO2015168829A1 (zh) * 2014-05-04 2015-11-12 华为技术有限公司 同步信号收发方法、装置及设备
US9883415B2 (en) * 2014-05-28 2018-01-30 Lg Electronics Inc. Method for performing discovery signal measurements in wireless communication system and user equipment thereof
CN105409301B (zh) * 2014-07-04 2019-07-19 华为技术有限公司 Lte同步方法和相关设备及系统
CN105307260A (zh) * 2014-07-24 2016-02-03 普天信息技术有限公司 同步信号序列的发送方法
CN110545578B (zh) 2014-08-11 2021-09-24 Lg 电子株式会社 在无线通信系统中发送同步信号的方法
WO2016046093A1 (en) * 2014-09-26 2016-03-31 Telefonaktiebolaget L M Ericsson (Publ) Listen-before-talk for discovery signal in license-assisted access lte
US10530627B2 (en) * 2015-01-02 2020-01-07 Lg Electronics Inc. Method for performing D2D operation in wireless communication system, and terminal using same
KR102389572B1 (ko) * 2015-06-17 2022-04-25 삼성디스플레이 주식회사 표시 시스템 및 표시 장치의 구동 방법
US10708764B2 (en) * 2016-03-10 2020-07-07 Sharp Kabushiki Kaisha Terminal apparatus and base station apparatus
WO2017165797A1 (en) * 2016-03-25 2017-09-28 Sharp Laboratories Of America, Inc. Synchronization method and apparatus for v2x communications
CN110073616B (zh) 2017-01-09 2022-03-29 苹果公司 同步信号发送和接收
US10523354B2 (en) * 2017-02-24 2019-12-31 Samsung Electronics Co., Ltd. Method and apparatus for design of NR-SS burst set

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2316243B1 (en) * 2008-08-22 2016-09-14 QUALCOMM Incorporated Base station synchronization
JP2012004834A (ja) * 2010-06-16 2012-01-05 Toshiba Corp 時刻同期システム及び時刻同期方法
CN106465374A (zh) * 2014-05-30 2017-02-22 夏普株式会社 终端装置、基站装置以及通信方法
CN106576319A (zh) * 2014-08-26 2017-04-19 Lg电子株式会社 在无线通信系统中发送和接收同步信号的方法以及执行该方法的装置
WO2017039293A1 (ko) * 2015-09-02 2017-03-09 삼성전자 주식회사 무선 통신 시스템에서 셀 아이디 결정 방법 및 장치

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