Communication method and apparatus

Abstract

Provided in the embodiments of the present application are a communication method and apparatus, which are used for improving the synchronization detection performance of a low-power synchronization signal (LP-SS). In the present application, the number of 0-valued bits and the number of 1-valued bits in a sequence used for generating an LP-SS are set equal, such that the power of different sequences is identical, thereby enhancing the synchronization detection performance of the LP-SS.

Description

A communication method and apparatus

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411998533.3, filed with the State Intellectual Property Office of the People's Republic of China on December 31, 2024, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference; this application claims priority to Chinese Patent Application No. 202510042046.8, filed with the State Intellectual Property Office of the People's Republic of China on January 9, 2025, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference; this application claims priority to Chinese Patent Application No. 202510116762.6, filed with the State Intellectual Property Office of the People's Republic of China on January 24, 2025, entitled "A Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology

[0004] In wireless communication systems, network devices send synchronization signals (SS) generated based on a specific sequence to terminal devices. Terminal devices receive the synchronization signals and detect the specific sequence to achieve time and frequency synchronization between the terminal devices and network devices. To reduce the power consumption of terminal devices, low-power (LP) characteristics have been introduced, and correspondingly, low-power synchronization signals (LP-SS) have been proposed. However, the currently used LP-SS sequences limit the synchronization detection performance (e.g., timing estimation performance). Summary of the Invention

[0005] This application provides a communication method and apparatus for improving the synchronization detection performance of low-power synchronization signals.

[0006] In a first aspect, a communication method is provided. The subject executing the method can be a network device or a chip, chip system or circuit used in the network device. The method can be implemented through the following steps: generating a low-power synchronization signal (LP-SS) according to a first sequence and sending the low-power synchronization signal; wherein, the number of bits with a value of 0 and the number of bits with a value of 1 in the first sequence are equal.

[0007] In this application, the synchronous detection performance of LP-SS is improved by making the number of bits with a value of 0 and the number of bits with a value of 1 equal in the generated LP-SS sequence, so that the power of different sequences is the same.

[0008] Secondly, a communication method is provided. The execution subject of the method can be a terminal device or a chip, chip system or circuit used in the terminal device. The method can be implemented through the following steps: receiving a low-power synchronization signal and detecting the low-power synchronization signal according to a first sequence; wherein, the number of bits with a value of 0 and the number of bits with a value of 1 in the first sequence are equal.

[0009] In this application, the synchronous detection performance of LP-SS is improved by making the number of bits with a value of 0 and the number of bits with a value of 1 equal in the generated LP-SS sequence, so that the power of different sequences is the same.

[0010] Based on the first and second aspects mentioned above, the following design is possible:

[0011] In one possible design, the number of bits with a value of 0 and the number of bits with a value of 1 in the first sequence are equal. This includes: each OFDM symbol carries a bit count M greater than 1, and the first sequence carries an equal number of bits with a value of 0 and the number of bits with a value of 1 in each OFDM symbol. This method ensures that each OFDM symbol has the same power, thereby further improving the synchronous detection performance of LP-SS.

[0012] In one possible design, the first sequence is associated with one or more of the following: the number of OFDM symbols occupied by the first sequence, the number of bits M carried by each OFDM symbol, and the cyclic prefix (CP). This approach can further improve the synchronous detection performance of LP-SS by considering the CP of the sequence when evaluating its detection performance.

[0013] In one possible design, the autocorrelation function of the first sequence satisfies at least one of the following: the sidelobe value is less than or equal to a first value, the trough value is less than or equal to a second value, or the main lobe width is less than or equal to a third value; wherein the autocorrelation function is related to at least one of the following: the number of OFDM symbols occupied by the first sequence, the number of bits M carried by each OFDM symbol, and the CP. This method considers the CP of the sequence when evaluating the detection performance of the sequence through the autocorrelation function, which can further improve the accuracy of the autocorrelation function evaluation, thereby further improving the synchronous detection performance of LP-SS.

[0014] In one possible design, each OFDM symbol carries 4 bits M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0015] Ranking 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0];

[0016] Ranking 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0017] Ranking 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0018] Ranking 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0019] Ranking 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0020] Ranking 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0021] Ranking 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0022] Ranking 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0023] Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0024] Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0025] Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0];

[0026] Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0027] Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0028] Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0029] Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0030] Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0031] Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0032] Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1];

[0033] Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0034] Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0035] Sequence 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0036] Sequence 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0037] Sequence 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0];

[0038] Sequence 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0039] Sequence 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0];

[0040] Sequence 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0];

[0041] Sequence 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0042] Sequence 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0];

[0043] Sequence 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0044] Sequence 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0045] Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0046] Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0047] Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0048] Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0049] Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0050] Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0051] Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0052] Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0053] Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0054] Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0055] Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0056] Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0];

[0057] Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0058] Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0059] Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0060] Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0061] Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0062] Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0063] Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0064] Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0065] Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1];

[0066] Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1];

[0067] Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0068] Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0069] Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0070] Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0071] Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0072] Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0073] Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0074] Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0075] Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0076] Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0077] Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0078] Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0079] Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1];

[0080] Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0081] Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0082] Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0083] Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0084] Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0085] Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1];

[0086] Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1];

[0087] Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0088] Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0089] Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0090] Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0091] Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1];

[0092] Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0];

[0093] Ranking 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0094] Ranking 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0095] Ranking 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0096] Ranking 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0097] Ranking 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0098] Ranking 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0099] Ranking 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0];

[0100] Ranking 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0];

[0101] Ranking 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0102] Ranking 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0103] Ranking 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0104] Ranking 90: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0];

[0105] Ranking 91: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0106] Ranking 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0107] Ranking 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0108] Ranking 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0];

[0109] Ranking 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0110] Ranking 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0];

[0111] Ranking 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0112] Ranking 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0];

[0113] Ranking 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0];

[0114] Ranking 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0115] Sequence 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0];

[0116] Sequence 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0117] Sequence 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0];

[0118] Sequence 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0119] Sequence 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0];

[0120] Sequence 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0];

[0121] Sequence 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0].

[0122] It should be noted that the serial numbers mentioned in this application are only for distinguishing sequences and do not limit the numbering of sequences. The same applies to the serial numbers mentioned below, and will not be described in detail again.

[0123] In one possible design, each OFDM symbol carries 2 bits M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0124] Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0125] Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0126] Ranking 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1];

[0127] Ranking 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0128] Ranking 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0];

[0129] Ranking 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0];

[0130] Ranking 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0];

[0131] Ranking 8: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1];

[0132] Ranking 9: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0];

[0133] Ranking 10: [0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1];

[0134] Ranking 11: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0135] Ranking 12: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0];

[0136] Ranking 13: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0137] Ranking 14: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0138] Ranking 15: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0];

[0139] Ranking 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0];

[0140] Ranking 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0141] Ranking 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0142] Ranking 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0];

[0143] Ranking 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1];

[0144] Ranking 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0145] Ranking 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0146] Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0];

[0147] Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0148] Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0149] Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0];

[0150] Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0151] Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0];

[0152] Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1];

[0153] Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1];

[0154] Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1];

[0155] Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0156] Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0];

[0157] Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1];

[0158] Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0];

[0159] Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1];

[0160] Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0161] Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0162] Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0163] Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0164] Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0165] Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0166] Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0167] Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0168] Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0169] Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0170] Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0171] Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0172] Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0173] Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0174] Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0175] Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0];

[0176] Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0177] Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0];

[0178] Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1];

[0179] Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0180] Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0181] Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1];

[0182] Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0183] Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1];

[0184] Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0185] Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0186] Sequence 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0187] Sequence 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0188] Sequence 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0189] Sequence 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0190] Sequence 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0191] Sequence 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0192] Sequence 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0193] Sequence 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0194] Sequence 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0195] Sequence 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0196] Sequence 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0197] Sequence 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1];

[0198] Sequence 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1].

[0199] In one possible design, each OFDM symbol carries 2 bits M, and the first sequence occupies 6 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0200] Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1];

[0201] Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1];

[0202] Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1];

[0203] Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1];

[0204] Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1];

[0205] Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1];

[0206] Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1];

[0207] Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1];

[0208] Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1];

[0209] Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1];

[0210] Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1];

[0211] Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1];

[0212] Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1];

[0213] Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1].

[0214] In one possible design, each OFDM symbol carries 1 bit M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0215] Sequence 1: [0 0 1 1 0 1 0 1];

[0216] Sequence 2: [0 1 0 1 0 0 1 1];

[0217] Sequence 3: [0 1 0 1 0 1 1 0];

[0218] Ranking 4: [0 1 0 1 1 0 0 1];

[0219] Ranking 5: [0 1 0 1 1 0 1 0];

[0220] Ranking 6: [0 1 1 0 0 1 0 1];

[0221] Ranking 7: [0 1 1 0 1 0 1 0];

[0222] Ranking 8: [1 0 0 0 1 0 1 1];

[0223] Ranking 9: [1 0 0 0 1 1 0 1];

[0224] Ranking 10: [1 0 0 1 0 1 0 1];

[0225] Ranking 11: [1 0 0 1 1 0 1 0];

[0226] Ranking 12: [1 0 1 0 0 0 1 1];

[0227] Ranking 13: [1 0 1 0 0 1 1 0];

[0228] Ranking 14: [1 0 1 0 1 0 0 1];

[0229] Ranking 15: [1 0 1 0 1 1 0 0];

[0230] Ranking 16: [1 0 1 1 0 0 0 1];

[0231] Ranking 17: [1 1 0 0 0 1 0 1];

[0232] Ranking 18: [1 1 0 0 1 0 1 0];

[0233] Ranking 19: [1 1 0 1 0 0 0 1];

[0234] Ranking 20: [1 0 1 0 1 0 1 0];

[0235] Ranking 21: [1 0 1 0 0 1 0 1];

[0236] Ranking 22: [0 1 0 1 0 1 0 1].

[0237] In one possible design, each OFDM symbol carries 1 bit M, and the first sequence set occupies 6 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0238] Sequence 1: [0 1 0 1 1 0];

[0239] Sequence 2: [0 1 1 0 1 0];

[0240] Sequence 3: [1 0 0 1 0 1];

[0241] Sequence 4: [1 0 1 0 0 1].

[0242] In one possible design, the first sequence belongs to a first sequence set, and the maximum value of the cross-correlation function between any two sequences in the first sequence set is less than or equal to the fourth value. This design can enhance the anti-interference capability between cells.

[0243] In one possible design, each OFDM symbol carries 4 bits M, and the sequences in the first sequence set occupy 8 OFDMs. The sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences whose sequence numbers are combinations of the following: [1 33 46 50]; or, [10 22 33 62]; or, [19 22 33 69]; or, [23 27 34 65]; or, [2 21 37 55]; or, [10 22 33 69]; or, [21 24 33 46]; or, [23 31 34 65]; or, [2 37 47 55]; or, [10 33 62 65]; or, [21 25 55 67]; or, [23 29 60] 65]; or, [2 21 24 38]; or, [11 15 21 67]; or, [21 23 34 36]; or, [23 33 60 65]; or, [2 24 38 40]; or, [11 21 25 67]; or, [21 23 27 34]; or, [23 27 60 65]; or, [2 24 40 68]; or, [12 41 49 63]; or, [21 23 31 34]; or, [23 60 62 65]; or, [2 9 48 53]; or, [12 25 48 59]; or, [21 23 34 65]; or, [23 [31 60 65]; or, [2 24 38 48]; or, [12 35 50 59]; or, [21 23 36 65]; or, [23 33 36 65]; or, [2 24 38 47]; or, [13 21 24 46]; or, [21 23 27 65]; or, [23 27 33 65]; or, [3 17 29 69]; or, [14 20 26 63]; or, [21 23 31 64]; or, [23 33 62 65]; or, [3 29 54 69]; or, [14 21 25 67]; or, [21 23 31] 65]; or, [24 33 46 68]; or, [4 37 47 55]; or, [14 21 26 67]; or, [22 38 41 58]; or, [24 43 57 61]; or, [4 36 47 55]; or, [14 20 28 58]; or, [22 33 41 49]; or, [24 38 40 65]; or, [5 32 43 61]; or, [15 21 55 67];Alternatively, [22 33 41 66]; or, [24 38 40 43]; or, [6 11 20 51]; or, [15 42 55 67]; or, [22 33 48 64]; or, [24 39 47 58]; or, [6 20 25 55]; or, [15 21 39 52]; or, [22 38 48 65]; or, [24 38 48 65]; or, [6 11 20 25]; or, [15 33 49 54]; or, [22 33 48 65]; or, [24 33 48 65]; or, [6 7 38 65]; or, [15 33 42] 54]; or, [22 33 48 59]; or, [24 38 47 58]; or, [6 45 54 65]; or, [16 45 54 65]; or, [22 35 50 59]; or, [24 28 47 58]; or, [7 16 38 65]; or, [18 22 41 58]; or, [22 33 54 65]; or, [25 33 48 59]; or, [7 24 38 65]; or, [18 22 33 41]; or, [22 33 49 54]; or, [25 33 54 59]; or, [7 14 18 65]; or, [18 [41 47 58]; or, [22 33 54 59]; or, [27 30 33 69]; or, [8 33 44 60]; or, [18 33 41 47]; or, [22 33 61 62]; or, [27 33 60 69]; or, [8 33 60 65]; or, [18 22 33 65]; or, [22 33 61 69]; or, [27 34 60 65]; or, [9 48 53 64]; or, [18 22 33 68]; or, [23 29 34 60]; or, [27 33 60 65]; or, [10 23 34] 60]; or, [19 28 55 56]; or, [23 27 34 60]; or, [28 41 47 58]; or, [10 23 34 65]; or, [19 24 28 43]; or, [23 27 33 60]; or, [29 34 61 65]; or, [10 23 33 60]; or, [19 29 30 34]; or, [23 33 60 62]; or, [29 34 60 65]; or, [10 23 60 62];Or, [19 29 34 60]; or, [23 31 34 60]; or, [31 34 60 65]; or, [10 23 60 69]; or, [19 27 30 34]; or, [23 29 60 69]; or, [33 45 48 65]; or, [10 23 60 65]; or, [19 27 34 60]; or, [23 33 60 69]; or, [33 45 54 65]; or, [10 23 33 62]; or, [19 27 30 33]; or, [23 27 60 69]; or, [33 59 60 62]; or, [10 [23 33 69]; or, [19 27 33 60]; or, [23 31 60 69]; or, [33 61 62 65]; or, [10 23 33 65]; or, [19 29 30 69]; or, [23 27 33 69]; or, [33 60 62 65]; or, [10 23 62 65]; or, [19 29 60 69]; or, [23 29 60 64]; or, [38 41 47 58]; or, [10 34 60 65]; or, [19 30 33 69]; or, [23 33 60 64]; or, [40 45 54] 65]; or, [10 33 60 62]; or, [19 27 30 69]; or, [23 31 60 64]; or, [10 33 60 69]; or, [19 33 60 69]; or, [23 29 34 65]; or, [10 33 60 65]; or, [19 27 60 69]; or, [23 34 60 65]; or, [10 60 62 65]; or, [19 27 33 69]; or, [23 34 36 65]; or, [73 41 74 75]; or, [76 58 39 77]; or, [78 79 37] 51]; or, [22 4 25 80]; or, [4 21 22 72]; or, [9 54 59 70]; or, [4 21 43 71]; or, [24 40 56 68]; or, [4 37 38 50]; or, [49 54 59 70]; or, [21 43 54 71]; or, [15 40 41 56]; or, [13 49 54 59]; or, [4 21 71 72]; or, [4 43 49 71]; or, [15 20 40 56];Alternatively, [33 49 54 59]; or, [24 38 40 68]; or, [43 49 54 71]; or, [15 40 54 56]; or, [21 54 59 70]; or, [2 37 38 68]; or, [25 40 54 56]; or, [15 40 56 68]; or, [81 85 93 94]; or, [82 85 89 94]; or, [82 85 91 97]; or, [82 85 94 97]; or, [82 89 94 106]; or, [82 91 97 106]; or, [82 94 97] 106]; or, [83 84 85 107]; or, [83 85 92 107]; or, [83 85 98 107]; or, [84 85 97 107]; or, [84 97 105 106]; or, [85 89 92 94]; or, [85 89 92 107]; or, [85 89 94 107]; or, [85 90 93 99]; or, [85 90 93 101]; or, [85 90 95 99]; or, [85 91 97 102]; or, [85 92 94 97]; or, [85 92 94 107]; or, [85 [92 97 107]; or, [85 93 94 97]; or, [85 93 94 107]; or, [85 93 97 107]; or, [85 93 101 107]; or, [85 94 96 97]; or, [85 94 97 107]; or, [85 94 98 107]; or, [86 92 100 107]; or, [87 88 90 105]; or, [87 88 105 106]; or, [87 94 98 106]; or, [87 94 98 107]; or, [87 94 105 106]; or, [88 92 97]

[105] ; or, [88 92 97 106]; or, [88 92 105 106]; or, [88 93 97 106]; or, [88 97 103 105]; or, [88 97 105 106]; or, [89 92 94 105]; or, [89 92 94 106]; or, [89 92 94 107]; or, [89 92 105 106]; or, [89 94 105 106]; or, [91 97 102 106]; or, [91 97 105 106];Alternatively, [91 100 105 106]; or, [91 104 105 106]; or, [92 94 97 105]; or, [92 94 97 106]; or, [92 94 97 107]; or, [92 94 100 105]; or, [92 94 100 106]; or, [92 94 100 107]; or, [92 94 105 106]; or, [92 97 105 106]; or, [92 100 105 106]; or, [93 94 97 106]; or, [93 94 97 107]; or, [94 97 105]

[106] ; or, [94 100 105 106]; or, [94 104 105 106].

[0244] It should be noted that the serial numbers mentioned in this application are only for referring to the sequences listed above, and do not limit the need for a corresponding serial number for the sequence. For example, the sequence number of the sequence in the first sequence set is [1 33 46 50], indicating that the first sequence set includes: [0 1 0 1 0 1 0 1 0 11 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0]; [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; [1 01 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; [1 0 1 0 0 1 1 0 0] [1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 10 1 0 1]. The first sequence set principle described below will not be explained in detail.

[0245] In one possible design, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 8 OFDMs. The sequence numbers of the sequences in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or, [15 23 37 62]; or, [2 6 26 36]; or, [16 20 42 45]; or, [2 11 40 46]; or, [17 26 52 61]; or, [2 26 36 40]; or, [17 41 61 64]; or, [2 27 41 51]; or, [17 52 61 69]; or, [3 7 18 50]; or, [17 53 61 64]; or, [3 7 18 50]; [7 18 61]; or, [18 41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; or, [19 31 47 66]; or, [3 18 46 50]; or, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 [12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; or, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; or, [24 38 44 62]; or, [6 10 17 33]; or, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51] 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69];Alternatively, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; or, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67] 69]; or, [9 30 33 68]; or, [9 33 40 41]; or, [9 33 47 48]; or, [10 34 57 65]; or, [34 42 57 65]; or, [4 19 34 57]; or, [13 27 29 74]; or, [13 25 3161]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 3157 61].

[0246] In one possible design, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 6 OFDMs. The sequence numbers of the sequences in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or, [15 23 37 62]; or, [2 6 26 36]; or, [16 20 42 45]; or, [2 11 40 46]; or, [17 26 52 61]; or, [2 26 36 40]; or, [17 41 61 64]; or, [2 27 41 51]; or, [17 52 61 69]; or, [3 7 18 50]; or, [17 53 61 64]; or, [3 7 18 50]; [7 18 61]; or, [18 41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; or, [19 31 47 66]; or, [3 18 46 50]; or, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 [12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; or, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; or, [24 38 44 62]; or, [6 10 17 33]; or, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51] 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69];Alternatively, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; or, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67] 69]; or, [9 30 33 68]; or, [9 33 40 41]; or, [9 33 47 48]; or, [10 34 57 65]; or, [34 42 57 65]; or, [4 19 34 57]; or, [13 27 29 74]; or, [13 25 3161]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 3157 61].

[0247] In one possible design, each OFDM symbol carries M bits of 1. The first sequence set occupies 8 OFDMs. The sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences with sequence numbers in combinations of the following: [1 2 6 16]; or [2 9 15 17]; or [6 12 14 17]; or [1 2 8 18]; or [2 9 15 18]; or [6 13 15 17]; or [1 2 16 18]; or [2 9 16 18]; or [6 14 16 19]; or [1 6 12 13]; or [2 10 16 19]; or [6 14 17 ...10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19]; or [1 10 16 19] 16]; or, [2 10 17 19]; or, [6 15 17 19]; or, [1 6 13 16]; or, [2 15 17 19]; or, [7 8 12 13]; or, [1 8 12 13]; or, [2 15 18 19]; or, [7 8 12 18]; or, [1 8 12 18]; or, [2 16 18 19]; or, [7 8 13 18]; or, [1 8 13 18]; or, [3 6 7 13]; or, [7 12 13 18]; or, [1 12 13 16]; or, [3 6 13 17]; or, [8 9 10 13]; or, [1 12 13 18]; or, [3 6 17 19]; or, [8 9 13 18]; or, [1 12 16 18]; or, [3 7 13 18]; or, [8 9 14 18]; or, [1 13 16 18]; or, [4 5 13 17]; or, [8 10 11 12]; or, [2 3 6 7]; or, [4 9 10 13]; or, [8 10 12 13]; or, [2 3 6 17]; or, [4 9 10 17]; or, [8 11 12 14]; or, [2 3 6 19]; or, [4 9 13] 17]; or, [8 11 12 18]; or, [2 3 7 18]; or, [4 9 14 17]; or, [8 11 14 18]; or, [2 3 17 19]; or, [4 10 13 17]; or, [8 12 13 18]; or, [2 3 18 19]; or, [4 10 17 19]; or, [8 12 14 18]; or, [2 4 5 17]; or, [4 14 17 19];Or, [8 14 18 19]; or, [2 4 9 10]; or, [5 6 11 12]; or, [9 10 13 16]; or, [2 4 9 17]; or, [5 6 12 13]; or, [9 10 13 17]; or, [2 4 10 17]; or, [5 6 12 17]; or, [9 13 15 17]; or, [2 4 10 19]; or, [5 6 13 17]; or, [9 13 15 18]; or, [2 4 17 19]; or, [5 11 12 18]; or, [9 13 16 18]; or, [2 5 6 17]; or, [5 [12 13 17]; or, [9 14 16 18]; or, [2 6 9 15]; or, [5 12 13 18]; or, [10 11 12 16]; or, [2 6 9 16]; or, [6 7 12 13]; or, [10 12 13 16]; or, [2 6 9 17]; or, [6 9 13 15]; or, [10 12 13 17]; or, [2 6 15 17]; or, [6 9 13 16]; or, [11 12 14 16]; or, [2 6 15 19]; or, [6 9 13 17]; or, [11 12 14] 18]; or, [2 6 16 19]; or, [6 9 14 16]; or, [11 12 16 18]; or, [2 6 17 19]; or, [6 9 14 17]; or, [11 14 16 18]; or, [2 7 8 18]; or, [6 9 15 17]; or, [12 13 16 18]; or, [2 8 9 10]; or, [6 11 12 14]; or, [12 14 16 18]; or, [2 8 9 18]; or, [6 11 12 16]; or, [14 16 18 19]; or, [2 8 10 19]; or, [6 11 [14 16]; or, [2 8 18 19]; or, [6 12 13 16]; or, [2 9 10 16]; or, [6 12 13 17]; or, [2 9 10 17]; or, [6 12 14 16]; or, [10 14 20 21]; or, [10 14 21 22].

[0248] In one possible design, each OFDM symbol carries 1 bit M, the first sequence belongs to a first sequence set, the first sequence set occupies 6 OFDMs, the sequence number of the sequence in the first sequence set is the following combination, or, the first sequence set includes at least two sequences whose sequence numbers are the following combination: [1 2 3 4].

[0249] In one possible design, the first bit of the first sequence is 1. This approach, by constraining the first bit of the first sequence to 1, is beneficial for the AGC function.

[0250] In one possible design, each OFDM symbol carries 4 bits M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0251] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0252] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0253] [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0];

[0254] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0255] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0];

[0256] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1];

[0257] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0];

[0258] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0259] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[0260] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]；

[0261] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0262] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]；

[0263] [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0264] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[0265] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0266] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]；

[0267] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]；

[0268] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]；

[0269] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0270] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0271] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0272] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0273] [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]；

[0274] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0275] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0276] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0277] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0278] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0279] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0280] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]；

[0281] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0282] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]；

[0283] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0284] [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0285] [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]；

[0286] [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]；

[0287] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0288] [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0289] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]；

[0290] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0];

[0291] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1].

[0292] In one possible design, each OFDM symbol carries 2 bits M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0293] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0294] [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0];

[0295] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0296] [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0297] [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0298] [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0299] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0300] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0301] [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0302] [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0303] [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0304] [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0305] [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]；

[0306] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]；

[0307] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]；

[0308] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0309] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]；

[0310] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]；

[0311] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]；

[0312] [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]；

[0313] [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]；

[0314] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0315] [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]；

[0316] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]；

[0317] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[0318] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0319] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[0320] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0321] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0322] [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0323] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0324] [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0325] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0326] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0327] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0328] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0329] [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1].

[0330] In one possible design, each OFDM symbol carries 2 bits M, and the first sequence occupies 6 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0331] [1 0 0 1 0 1 0 1 1 0 0 1];

[0332] [1 0 0 1 1 0 0 1 0 1 0 1];

[0333] [1 0 0 1 1 0 1 0 0 1 0 1];

[0334] [1 0 0 1 1 0 1 0 1 0 0 1];

[0335] [1 0 1 0 0 1 0 1 1 0 0 1];

[0336] [1 0 1 0 0 1 1 0 0 1 0 1];

[0337] [1 0 1 0 1 0 0 1 1 0 0 1].

[0338] In one possible design, each OFDM symbol carries 1 bit M, and the first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0339] [1 0 0 0 1 0 1 1];

[0340] [1 0 0 0 1 1 0 1];

[0341] [1 0 0 1 0 1 0 1];

[0342] [1 0 0 1 1 0 1 0];

[0343] [1 0 1 0 0 0 1 1];

[0344] [1 0 1 0 0 1 1 0];

[0345] [1 0 1 0 1 0 0 1];

[0346] [1 0 1 0 1 1 0 0];

[0347] [1 0 1 1 0 0 0 1];

[0348] [1 1 0 0 0 1 0 1];

[0349] [1 1 0 0 1 0 1 0];

[0350] [1 1 0 1 0 0 0 1];

[0351] [1 0 1 0 1 0 1 0];

[0352] [1 0 1 0 0 1 0 1].

[0353] In one possible design, each OFDM symbol carries 1 bit M, and the first sequence occupies 6 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0354] [1 0 0 1 0 1];

[0355] [1 0 1 0 0 1].

[0356] Thirdly, a communication method is provided, wherein the execution subject of the method may be a network device or a chip, chip system or circuit for a network device, and the method may be implemented by the following steps: generating a low-power synchronization signal (LP-SS) according to a first sequence and sending the low-power synchronization signal;

[0357] Each OFDM symbol carries 4 bits M. The first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0358] Sequence 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0];

[0359] Sequence 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0360] Sequence 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0361] Sequence 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0362] Sequence 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0363] Sequence 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0364] Sequence 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0365] Sequence 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0366] Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0367] Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0368] Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0];

[0369] Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0370] Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0371] Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0372] Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0373] Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0374] Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0375] Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1];

[0376] Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0377] Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0378] Ranking 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0379] Ranking 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0380] Ranking 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0];

[0381] Ranking 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0382] Ranking 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0];

[0383] Ranking 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0];

[0384] Ranking 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0385] Ranking 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0];

[0386] Ranking 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0387] Ranking 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0388] Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0389] Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0390] Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0391] Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0392] Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0393] Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0394] Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0395] Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0396] Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0397] Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0398] Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0399] Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0];

[0400] Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0401] Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0402] Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0403] Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0404] Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0405] Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0406] Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0407] Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0408] Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1];

[0409] Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1];

[0410] Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0411] Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0412] Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0413] Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0414] Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0415] Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0416] Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0417] Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0418] Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0419] Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0420] Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0421] Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0422] Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1];

[0423] Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0424] Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0425] Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0426] Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0427] Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0428] Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1];

[0429] Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1];

[0430] Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0431] Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0432] Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0433] Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0434] Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1];

[0435] Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0];

[0436] Sequence 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0437] Sequence 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0438] Sequence 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0439] Sequence 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0440] Sequence 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0441] Sequence 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0442] Sequence 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 之0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0];

[0443] Sequence 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0];

[0444] Sequence 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0445] Sequence 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0446] It should be noted that there seems to be an incorrect character "之" in the translation of Sequence 85 in the above content. It should be corrected according to the actual situation.Sequence 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0447] Sequence 90: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0];

[0448] Sequence 91: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0449] Sequence 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0450] Sequence 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0451] Sequence 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0];

[0452] Sequence 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0453] Sequence 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0];

[0454] Sequence 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0455] Sequence 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0];

[0456] Sequence 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0];

[0457] Sequence 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0];

[0458] Sequence 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0];

[0459] Sequence 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0460] Sequence 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0];

[0461] Sequence 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0462] Sequence 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0];

[0463] Sequence 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0];

[0464] Sequence 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0];

[0465] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0466] Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0467] Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0468] Sequence 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1];

[0469] Sequence 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0470] Sequence 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0];

[0471] Sequence 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0];

[0472] Sequence 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0];

[0473] Sequence 8: [0 1 0 1 1 0 0 1 1​​​​​​​​​​​​​​​​​​​​​​​Ranking 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0];

[0482] Ranking 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0483] Ranking 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0484] Ranking 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0];

[0485] Ranking 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1];

[0486] Ranking 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0487] Ranking 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0488] Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0];

[0489] Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0490] Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0491] Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0];

[0492] Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0493] Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0];

[0494] Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1];

[0495] Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1];

[0496] Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1];

[0497] Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0498] Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0];

[0499] Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1];

[0500] Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0];

[0501] Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1];

[0502] Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0503] Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0504] Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0505] Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0506] Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0507] Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0508] Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0509] Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0510] Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0511] Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0512] Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0513] Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0514] Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0515] Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0516] Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0517] Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0];

[0518] Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0519] Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0];

[0520] Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1];

[0521] Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0522] Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0523] Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1];

[0524] Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0525] Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1];

[0526] Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0527] Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0528] Ranking 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0529] Ranking 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0530] Ranking 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0531] Ranking 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0532] Ranking 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0533] Ranking 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0534] Ranking 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0535] Ranking 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0536] Ranking 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0537] Ranking 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0538] Ranking 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0539] Ranking 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1];

[0540] Ranking 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1];

[0541] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0542] Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1];

[0543] Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1];

[0544] Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1];

[0545] Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1];

[0546] Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1];

[0547] Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1];

[0548] Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1];

[0549] Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1];

[0550] Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1];

[0551] Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1];

[0552] Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1];

[0553] Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1];

[0554] Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1];

[0555] Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1].

[0556] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0557] Ranking 1: [0 0 1 1 0 1 0 1];

[0558] Ranking 2: [0 1 0 1 0 0 1 1];

[0559] Ranking 3: [0 1 0 1 0 1 1 0];

[0560] Ranking 4: [0 1 0 1 1 0 0 1];

[0561] Ranking 5: [0 1 0 1 1 0 1 0];

[0562] Ranking 6: [0 1 1 0 0 1 0 1];

[0563] Ranking 7: [0 1 1 0 1 0 1 0];

[0564] Ranking 8: [1 0 0 0 1 0 1 1];

[0565] Ranking 9: [1 0 0 0 1 1 0 1];

[0566] Ranking 10: [1 0 0 1 0 1 0 1];

[0567] Ranking 11: [1 0 0 1 1 0 1 0];

[0568] Ranking 12: [1 0 1 0 0 0 1 1];

[0569] Ranking 13: [1 0 1 0 0 1 1 0];

[0570] Ranking 14: [1 0 1 0 1 0 0 1];

[0571] Ranking 15: [1 0 1 0 1 1 0 0];

[0572] Ranking 16: [1 0 1 1 0 0 0 1];

[0573] Ranking 17: [1 1 0 0 0 1 0 1];

[0574] Ranking 18: [1 1 0 0 1 0 1 0];

[0575] Ranking 19: [1 1 0 1 0 0 0 1];

[0576] Ranking 20: [1 0 1 0 1 0 1 0];

[0577] Ranking 21: [1 0 1 0 0 1 0 1];

[0578] Sequence 22: [0 1 0 1 0 1 0 1];

[0579] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0580] Sequence 1: [0 1 0 1 1 0];

[0581] Sequence 2: [0 1 1 0 1 0];

[0582] Sequence 3: [1 0 0 1 0 1];

[0583] Sequence 4: [1 0 1 0 0 1].

[0584] In this application, the synchronous detection performance of LP-SS is improved by making the number of bits with a value of 0 and the number of bits with a value of 1 equal in the generated LP-SS sequence, so that the power of different sequences is the same.

[0585] In one possible design, the first sequence belongs to the first sequence set;

[0586] Each OFDM symbol carries 4 bits M. The first sequence set occupies 8 OFDMs. The sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences with sequence numbers in combinations of the following: [1 33 46 50]; or [10 22 33 62]; or [19 22 33 69]; or [23 27 34 65]; or [2 21 37 55]; or [10 22 33 69]; or [21 24 33 46]; or [23 31 34 65]; or [2 37 47 55]; or [10 33 62 65]; or [21 25 55 67]; or [23 29 60 65]; or [2 [21 24 38]; or, [11 15 21 67]; or, [21 23 34 36]; or, [23 33 60 65]; or, [2 24 38 40]; or, [11 21 25 67]; or, [21 23 27 34]; or, [23 27 60 65]; or, [2 24 40 68]; or, [12 41 49 63]; or, [21 23 31 34]; or, [23 60 62 65]; or, [2 9 48 53]; or, [12 25 48 59]; or, [21 23 34 65]; or, [23 31 60] 65]; or, [2 24 38 48]; or, [12 35 50 59]; or, [21 23 36 65]; or, [23 33 36 65]; or, [2 24 38 47]; or, [13 21 24 46]; or, [21 23 27 65]; or, [23 27 33 65]; or, [3 17 29 69]; or, [14 20 26 63]; or, [21 23 31 64]; or, [23 33 62 65]; or, [3 29 54 69]; or, [14 21 25 67]; or, [21 23 31 65]; or, [24 [33 46 68]; or, [4 37 47 55]; or, [14 21 26 67]; or, [22 38 41 58]; or, [24 43 57 61]; or, [4 36 47 55]; or, [14 20 28 58]; or, [22 33 41 49]; or, [24 38 40 65]; or, [5 32 43 61]; or, [15 21 55 67];Alternatively, [22 33 41 66]; or, [24 38 40 43]; or, [6 11 20 51]; or, [15 42 55 67]; or, [22 33 48 64]; or, [24 39 47 58]; or, [6 20 25 55]; or, [15 21 39 52]; or, [22 38 48 65]; or, [24 38 48 65]; or, [6 11 20 25]; or, [15 33 49 54]; or, [22 33 48 65]; or, [24 33 48 65]; or, [6 7 38 65]; or, [15 33 42] 54]; or, [22 33 48 59]; or, [24 38 47 58]; or, [6 45 54 65]; or, [16 45 54 65]; or, [22 35 50 59]; or, [24 28 47 58]; or, [7 16 38 65]; or, [18 22 41 58]; or, [22 33 54 65]; or, [25 33 48 59]; or, [7 24 38 65]; or, [18 22 33 41]; or, [22 33 49 54]; or, [25 33 54 59]; or, [7 14 18 65]; or, [18 [41 47 58]; or, [22 33 54 59]; or, [27 30 33 69]; or, [8 33 44 60]; or, [18 33 41 47]; or, [22 33 61 62]; or, [27 33 60 69]; or, [8 33 60 65]; or, [18 22 33 65]; or, [22 33 61 69]; or, [27 34 60 65]; or, [9 48 53 64]; or, [18 22 33 68]; or, [23 29 34 60]; or, [27 33 60 65]; or, [10 23 34] 60]; or, [19 28 55 56]; or, [23 27 34 60]; or, [28 41 47 58]; or, [10 23 34 65]; or, [19 24 28 43]; or, [23 27 33 60]; or, [29 34 61 65]; or, [10 23 33 60]; or, [19 29 30 34]; or, [23 33 60 62]; or, [29 34 60 65]; or, [10 23 60 62];Or, [19 29 34 60]; or, [23 31 34 60]; or, [31 34 60 65]; or, [10 23 60 69]; or, [19 27 30 34]; or, [23 29 60 69]; or, [33 45 48 65]; or, [10 23 60 65]; or, [19 27 34 60]; or, [23 33 60 69]; or, [33 45 54 65]; or, [10 23 33 62]; or, [19 27 30 33]; or, [23 27 60 69]; or, [33 59 60 62]; or, [10 [23 33 69]; or, [19 27 33 60]; or, [23 31 60 69]; or, [33 61 62 65]; or, [10 23 33 65]; or, [19 29 30 69]; or, [23 27 33 69]; or, [33 60 62 65]; or, [10 23 62 65]; or, [19 29 60 69]; or, [23 29 60 64]; or, [38 41 47 58]; or, [10 34 60 65]; or, [19 30 33 69]; or, [23 33 60 64]; or, [40 45 54] 65]; or, [10 33 60 62]; or, [19 27 30 69]; or, [23 31 60 64]; or, [10 33 60 69]; or, [19 33 60 69]; or, [23 29 34 65]; or, [10 33 60 65]; or, [19 27 60 69]; or, [23 34 60 65]; or, [10 60 62 65]; or, [19 27 33 69]; or, [23 34 36 65]; or, [73 41 74 75]; or, [76 58 39 77]; or, [78 79 37] 51]; or, [22 4 25 80]; or, [4 21 22 72]; or, [9 54 59 70]; or, [4 21 43 71]; or, [24 40 56 68]; or, [4 37 38 50]; or, [49 54 59 70]; or, [21 43 54 71]; or, [15 40 41 56]; or, [13 49 54 59]; or, [4 21 71 72]; or, [4 43 49 71]; or, [15 20 40 56];Alternatively, [33 49 54 59]; or, [24 38 40 68]; or, [43 49 54 71]; or, [15 40 54 56]; or, [21 54 59 70]; or, [2 37 38 68]; or, [25 40 54 56]; or, [15 40 56 68]; or, [81 85 93 94]; or, [82 85 89 94]; or, [82 85 91 97]; or, [82 85 94 97]; or, [82 89 94 106]; or, [82 91 97 106]; or, [82 94 97] 106]; or, [83 84 85 107]; or, [83 85 92 107]; or, [83 85 98 107]; or, [84 85 97 107]; or, [84 97 105 106]; or, [85 89 92 94]; or, [85 89 92 107]; or, [85 89 94 107]; or, [85 90 93 99]; or, [85 90 93 101]; or, [85 90 95 99]; or, [85 91 97 102]; or, [85 92 94 97]; or, [85 92 94 107]; or, [85 [92 97 107]; or, [85 93 94 97]; or, [85 93 94 107]; or, [85 93 97 107]; or, [85 93 101 107]; or, [85 94 96 97]; or, [85 94 97 107]; or, [85 94 98 107]; or, [86 92 100 107]; or, [87 88 90 105]; or, [87 88 105 106]; or, [87 94 98 106]; or, [87 94 98 107]; or, [87 94 105 106]; or, [88 92 97]

[105] ; or, [88 92 97 106]; or, [88 92 105 106]; or, [88 93 97 106]; or, [88 97 103 105]; or, [88 97 105 106]; or, [89 92 94 105]; or, [89 92 94 106]; or, [89 92 94 107]; or, [89 92 105 106]; or, [89 94 105 106]; or, [91 97 102 106]; or, [91 97 105 106];Alternatively, [91 100 105 106]; or, [91 104 105 106]; or, [92 94 97 105]; or, [92 94 97 106]; or, [92 94 97 107]; or, [92 94 100 105]; or, [92 94 100 106]; or, [92 94 100 107]; or, [92 94 105 106]; or, [92 97 105 106]; or, [92 100 105 106]; or, [93 94 97 106]; or, [93 94 97 107]; or, [94 97 105]

[106] ; or, [94 100 105 106]; or, [94 104 105 106];

[0587] Alternatively, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 8 OFDMs. The sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or, [15 23 37 62]; or, [2 6 26 36]; or, [16 20 42 45]; or, [2 11 40 46]; or, [17 26 52 61]; or, [2 26 36 40]; or, [17 41 61 64]; or, [2 27 41 51]; or, [17 52 61 69]; or, [3 7 18 50]; or, [17 53 61 64]; or, [3 7 [18 61]; or, [18 41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; or, [19 31 47 66]; or, [3 18 46 50]; or, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 [12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; or, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; or, [24 38 44 62]; or, [6 10 17 33]; or, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51] 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69];Alternatively, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; or, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67] 69]; or, [9 30 33 68]; or, [9 33 40 41]; or, [9 33 47 48]; or, [10 34 57 65]; or, [34 42 57 65]; or, [4 19 34 57]; or, [13 27 29 74]; or, [13 25 31 61]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 31 57 61];

[0588] Alternatively, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 6 OFDMs. The sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 6 9 12]; or, [1 6 11 12]; or, [1 6 11 13]; or, [1 6 12 13]; or, [1 11 12 13]; or, [2 6 9 12]; or, [2 6 12 13]; or, [2 7 10 13]; or, [2 7 12 13]; or, [3 4 10 13]; or, [3 4 10 14]; or, [3 5 8 10]; or, [3 5 10 14]; or, [3 8 10

[13] ; or, [6 11 12 13]; or, [7 8 10 13]; or, [7 11 12 13];

[0589] Alternatively, each OFDM symbol carries 1 bit M, the first sequence set occupies 8 OFDMs, and the sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 2 6 16]; or, [2 9 15 17]; or, [6 12 14 17]; or, [1 2 8 18]; or, [2 9 15 18]; or, [6 13 15 17]; or, [1 2 16 18]; or, [2 9 16 18]; or, [6 14 16 19]; or, [1 6 12 13]; or, [2 10 16 19]; or, [6 14 17 19]; or, [1 6 12 16]; or, [2 10 16 19]; or, [6 14 17 19]; or, [1 6 12 16]; or, [2 10 16 19]; [10 17 19]; or, [6 15 17 19]; or, [1 6 13 16]; or, [2 15 17 19]; or, [7 8 12 13]; or, [1 8 12 13]; or, [2 15 18 19]; or, [7 8 12 18]; or, [1 8 12 18]; or, [2 16 18 19]; or, [7 8 13 18]; or, [1 8 13 18]; or, [3 6 7 13]; or, [7 12 13 18]; or, [1 12 13 16]; or, [3 6 13 17]; or, [8 9 10 13]; or, [1 [12 13 18]; or, [3 6 17 19]; or, [8 9 13 18]; or, [1 12 16 18]; or, [3 7 13 18]; or, [8 9 14 18]; or, [1 13 16 18]; or, [4 5 13 17]; or, [8 10 11 12]; or, [2 3 6 7]; or, [4 9 10 13]; or, [8 10 12 13]; or, [2 3 6 17]; or, [4 9 10 17]; or, [8 11 12 14]; or, [2 3 6 19]; or, [4 9 13 17]; or, [8 11 12] 18]; or, [2 3 7 18]; or, [4 9 14 17]; or, [8 11 14 18]; or, [2 3 17 19]; or, [4 10 13 17]; or, [8 12 13 18]; or, [2 3 18 19]; or, [4 10 17 19]; or, [8 12 14 18]; or, [2 4 5 17]; or, [4 14 17 19];Or, [8 14 18 19]; or, [2 4 9 10]; or, [5 6 11 12]; or, [9 10 13 16]; or, [2 4 9 17]; or, [5 6 12 13]; or, [9 10 13 17]; or, [2 4 10 17]; or, [5 6 12 17]; or, [9 13 15 17]; or, [2 4 10 19]; or, [5 6 13 17]; or, [9 13 15 18]; or, [2 4 17 19]; or, [5 11 12 18]; or, [9 13 16 18]; or, [2 5 6 17]; or, [5 [12 13 17]; or, [9 14 16 18]; or, [2 6 9 15]; or, [5 12 13 18]; or, [10 11 12 16]; or, [2 6 9 16]; or, [6 7 12 13]; or, [10 12 13 16]; or, [2 6 9 17]; or, [6 9 13 15]; or, [10 12 13 17]; or, [2 6 15 17]; or, [6 9 13 16]; or, [11 12 14 16]; or, [2 6 15 19]; or, [6 9 13 17]; or, [11 12 14] 18]; or, [2 6 16 19]; or, [6 9 14 16]; or, [11 12 16 18]; or, [2 6 17 19]; or, [6 9 14 17]; or, [11 14 16 18]; or, [2 7 8 18]; or, [6 9 15 17]; or, [12 13 16 18]; or, [2 8 9 10]; or, [6 11 12 14]; or, [12 14 16 18]; or, [2 8 9 18]; or, [6 11 12 16]; or, [14 16 18 19]; or, [2 8 10 19]; or, [6 11 [14 16]; or, [2 8 18 19]; or, [6 12 13 16]; or, [2 9 10 16]; or, [6 12 13 17]; or, [2 9 10 17]; or, [6 12 14 16]; or, [10 14 20 21]; or, [10 14 21 22];

[0590] Alternatively, each OFDM symbol carries 1 bit M, the sequence in the first sequence set occupies 6 OFDMs, the sequence number of the sequence in the first sequence set is the following combination, or the first sequence set includes at least two sequences from the sequence number of the following combination: [1 2 3 4].

[0591] Fourthly, a communication method is provided. The subject executing the method may be a terminal device or a chip, chip system or circuit used in the terminal device. The method can be implemented through the following steps: receiving a low-power synchronization signal and detecting the low-power synchronization signal according to a first sequence.

[0592] Each OFDM symbol carries 4 bits M. The first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0593] Sequence 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0];

[0594] Sequence 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0595] Sequence 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0596] Sequence 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0];

[0597] Sequence 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0598] Sequence 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0599] Sequence 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0600] Ranking 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0601] Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0602] Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0603] Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0];

[0604] Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0605] Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0606] Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0607] Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0608] Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0609] Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0610] Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1];

[0611] Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0612] Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0613] Ranking 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0614] Ranking 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0615] Ranking 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0];

[0616] Ranking 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0];

[0617] Ranking 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0];

[0618] Ranking 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0];

[0619] Ranking 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0620] Ranking 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0];

[0621] Ranking 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0622] Ranking 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0623] Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0624] Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0625] Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0626] Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0627] Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0628] Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0629] Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0630] Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0631] Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0632] Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0633] Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0634] Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0];

[0635] Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0636] Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0637] Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0638] Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0639] Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0640] Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0641] Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0642] Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0643] Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1];

[0644] Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1];

[0645] Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0646] Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0647] Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0648] Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0649] Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0650] Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1];

[0651] Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0652] Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1];

[0653] Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0654] Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0655] Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0656] Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0657] Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1];

[0658] Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0659] Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0660] Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0661] Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0662] Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0663] Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1];

[0664] Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1];

[0665] Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0666] Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0667] Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0668] Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0669] Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1];

[0670] Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0];

[0671] Ranking 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0672] Ranking 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0673] Ranking 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0674] Ranking 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0675] Ranking 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0676] Ranking 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0677] Ranking 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0];

[0678] Ranking 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0];

[0679] Ranking 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0680] Ranking 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0681] Ranking 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0682] Ranking 90: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0];

[0683] Ranking 91: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0];

[0684] Ranking 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0685] Ranking 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0];

[0686] Ranking 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0];

[0687] Ranking 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0688] Ranking 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0];

[0689] Ranking 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0];

[0690] Ranking 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0];

[0691] Ranking 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0];

[0692] Ranking 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0693] Ranking 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0];

[0694] Ranking 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0695] Ranking 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0];

[0696] Ranking 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0];

[0697] Ranking 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0];

[0698] Ranking 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0];

[0699] Ranking 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0];

[0700] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0701] Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0];

[0702] Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0703] Sequence 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1];

[0704] Sequence 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0705] Sequence 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0];

[0706] Sequence 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0];

[0707] Sequence 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0];

[0708] Sequence 8: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1];

[0709] Sequence 9: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0];

[0710] Sequence 10: [0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1];

[0711] Sequence 11: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0712] Sequence 12: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0];

[0713] Sequence 13: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1];

[0714] Sequence 14: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0];

[0715] Ranking 15: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0];

[0716] Ranking 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0];

[0717] Ranking 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0];

[0718] Ranking 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0];

[0719] Ranking 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0];

[0720] Ranking 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1];

[0721] Ranking 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1];

[0722] Ranking 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0];

[0723] Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0];

[0724] Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0725] Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0726] Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0];

[0727] Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1];

[0728] Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0];

[0729] Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1];

[0730] Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1];

[0731] Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1];

[0732] Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0733] Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0];

[0734] Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1];

[0735] Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0];

[0736] Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1];

[0737] Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0];

[0738] Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0739] Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0];

[0740] Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0741] Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0742] Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0743] Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0744] Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0745] Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0746] Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0747] Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0748] Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0749] Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0750] Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0751] Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0752] Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0];

[0753] Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1];

[0754] Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0];

[0755] Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1];

[0756] Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1];

[0757] Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1];

[0758] Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1];

[0759] Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1];

[0760] Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1];

[0761] Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1];

[0762] Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0];

[0763] Ranking 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1];

[0764] Ranking 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0];

[0765] Ranking 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1];

[0766] Ranking 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0767] Ranking 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0768] Ranking 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0769] Ranking 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0770] Ranking 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0771] Ranking 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0772] Ranking 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0773] Ranking 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0774] Ranking 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1];

[0775] Sequence 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1];

[0776] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0777] Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1];

[0778] Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1];

[0779] Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1];

[0780] Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1];

[0781] Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1];

[0782] Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1];

[0783] Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1];

[0784] Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1];

[0785] Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1];

[0786] Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1];

[0787] Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1];

[0788] Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1];

[0789] Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1];

[0790] Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1].

[0791] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0792] Sequence 1: [0 0 1 1 0 1 0 1];

[0793] Sequence 2: [0 1 0 1 0 0 1 1];

[0794] Sequence 3: [0 1 0 1 0 1 1 0];

[0795] Sequence 4: [0 1 0 1 1 0 0 1];

[0796] Sequence 5: [0 1 0 1 1 0 1 0];

[0797] Sequence 6: [0 1 1 0 0 1 0 1];

[0798] Sequence 7: [0 1 1 0 1 0 1 0];

[0799] Sequence 8: [1 0 0 0 1 0 1 1];

[0800] Sequence 9: [1 0 0 0 1 1 0 1];

[0801] Sequence 10: [1 0 0 1 0 1 0 1];

[0802] Sequence 11: [1 0 0 1 1 0 1 0];

[0803] Sequence 12: [1 0 1 0 0 0 1 1];

[0804] Sequence 13: [1 0 1 0 0 1 1 0];

[0805] Sequence 14: [1 0 1 0 1 0 0 1];

[0806] Sequence 15: [1 0 1 0 1 1 0 0];

[0807] Sequence 16: [1 0 1 1 0 0 0 1];

[0808] Sequence 17: [1 1 0 0 0 1 0 1];

[0809] Sequence 18: [1 1 0 0 1 0 1 0];

[0810] Sequence 19: [1 1 0 1 0 0 0 1];

[0811] Sequence 20: [1 0 1 0 1 0 1 0];

[0812] Sequence 21: [1 0 1 0 0 1 0 1];

[0813] Sequence 22: [0 1 0 1 0 1 0 1];

[0814] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0815] Sequence 1: [0 1 0 1 1 0];

[0816] Sequence 2: [0 1 1 0 1 0];

[0817] Sequence 3: [1 0 0 1 0 1];

[0818] Sequence 4: [1 0 1 0 0 1].

[0819] In this application, the synchronous detection performance of LP-SS is improved by making the number of bits with a value of 0 and the number of bits with a value of 1 equal in the generated LP-SS sequence, so that the power of different sequences is the same.

[0820] In one possible design, the first sequence belongs to the first sequence set;

[0821] Each OFDM symbol carries 4 bits M. The first sequence set occupies 8 OFDMs. The sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences with sequence numbers in combinations of the following: [1 33 46 50]; or [10 22 33 62]; or [19 22 33 69]; or [23 27 34 65]; or [2 21 37 55]; or [10 22 33 69]; or [21 24 33 46]; or [23 31 34 65]; or [2 37 47 55]; or [10 33 62 65]; or [21 25 55 67]; or [23 29 60 65]; or [2 [21 24 38]; or, [11 15 21 67]; or, [21 23 34 36]; or, [23 33 60 65]; or, [2 24 38 40]; or, [11 21 25 67]; or, [21 23 27 34]; or, [23 27 60 65]; or, [2 24 40 68]; or, [12 41 49 63]; or, [21 23 31 34]; or, [23 60 62 65]; or, [2 9 48 53]; or, [12 25 48 59]; or, [21 23 34 65]; or, [23 31 60] 65]; or, [2 24 38 48]; or, [12 35 50 59]; or, [21 23 36 65]; or, [23 33 36 65]; or, [2 24 38 47]; or, [13 21 24 46]; or, [21 23 27 65]; or, [23 27 33 65]; or, [3 17 29 69]; or, [14 20 26 63]; or, [21 23 31 64]; or, [23 33 62 65]; or, [3 29 54 69]; or, [14 21 25 67]; or, [21 23 31 65]; or, [24 [33 46 68]; or, [4 37 47 55]; or, [14 21 26 67]; or, [22 38 41 58]; or, [24 43 57 61]; or, [4 36 47 55]; or, [14 20 28 58]; or, [22 33 41 49]; or, [24 38 40 65]; or, [5 32 43 61]; or, [15 21 55 67];Alternatively, [22 33 41 66]; or, [24 38 40 43]; or, [6 11 20 51]; or, [15 42 55 67]; or, [22 33 48 64]; or, [24 39 47 58]; or, [6 20 25 55]; or, [15 21 39 52]; or, [22 38 48 65]; or, [24 38 48 65]; or, [6 11 20 25]; or, [15 33 49 54]; or, [22 33 48 65]; or, [24 33 48 65]; or, [6 7 38 65]; or, [15 33 42] 54]; or, [22 33 48 59]; or, [24 38 47 58]; or, [6 45 54 65]; or, [16 45 54 65]; or, [22 35 50 59]; or, [24 28 47 58]; or, [7 16 38 65]; or, [18 22 41 58]; or, [22 33 54 65]; or, [25 33 48 59]; or, [7 24 38 65]; or, [18 22 33 41]; or, [22 33 49 54]; or, [25 33 54 59]; or, [7 14 18 65]; or, [18 [41 47 58]; or, [22 33 54 59]; or, [27 30 33 69]; or, [8 33 44 60]; or, [18 33 41 47]; or, [22 33 61 62]; or, [27 33 60 69]; or, [8 33 60 65]; or, [18 22 33 65]; or, [22 33 61 69]; or, [27 34 60 65]; or, [9 48 53 64]; or, [18 22 33 68]; or, [23 29 34 60]; or, [27 33 60 65]; or, [10 23 34] 60]; or, [19 28 55 56]; or, [23 27 34 60]; or, [28 41 47 58]; or, [10 23 34 65]; or, [19 24 28 43]; or, [23 27 33 60]; or, [29 34 61 65]; or, [10 23 33 60]; or, [19 29 30 34]; or, [23 33 60 62]; or, [29 34 60 65]; or, [10 23 60 62];Or, [19 29 34 60]; or, [23 31 34 60]; or, [31 34 60 65]; or, [10 23 60 69]; or, [19 27 30 34]; or, [23 29 60 69]; or, [33 45 48 65]; or, [10 23 60 65]; or, [19 27 34 60]; or, [23 33 60 69]; or, [33 45 54 65]; or, [10 23 33 62]; or, [19 27 30 33]; or, [23 27 60 69]; or, [33 59 60 62]; or, [10 [23 33 69]; or, [19 27 33 60]; or, [23 31 60 69]; or, [33 61 62 65]; or, [10 23 33 65]; or, [19 29 30 69]; or, [23 27 33 69]; or, [33 60 62 65]; or, [10 23 62 65]; or, [19 29 60 69]; or, [23 29 60 64]; or, [38 41 47 58]; or, [10 34 60 65]; or, [19 30 33 69]; or, [23 33 60 64]; or, [40 45 54] 65]; or, [10 33 60 62]; or, [19 27 30 69]; or, [23 31 60 64]; or, [10 33 60 69]; or, [19 33 60 69]; or, [23 29 34 65]; or, [10 33 60 65]; or, [19 27 60 69]; or, [23 34 60 65]; or, [10 60 62 65]; or, [19 27 33 69]; or, [23 34 36 65]; or, [73 41 74 75]; or, [76 58 39 77]; or, [78 79 37] 51]; or, [22 4 25 80]; or, [4 21 22 72]; or, [9 54 59 70]; or, [4 21 43 71]; or, [24 40 56 68]; or, [4 37 38 50]; or, [49 54 59 70]; or, [21 43 54 71]; or, [15 40 41 56]; or, [13 49 54 59]; or, [4 21 71 72]; or, [4 43 49 71]; or, [15 20 40 56];Alternatively, [33 49 54 59]; or, [24 38 40 68]; or, [43 49 54 71]; or, [15 40 54 56]; or, [21 54 59 70]; or, [2 37 38 68]; or, [25 40 54 56]; or, [15 40 56 68]; or, [81 85 93 94]; or, [82 85 89 94]; or, [82 85 91 97]; or, [82 85 94 97]; or, [82 89 94 106]; or, [82 91 97 106]; or, [82 94 97] 106]; or, [83 84 85 107]; or, [83 85 92 107]; or, [83 85 98 107]; or, [84 85 97 107]; or, [84 97 105 106]; or, [85 89 92 94]; or, [85 89 92 107]; or, [85 89 94 107]; or, [85 90 93 99]; or, [85 90 93 101]; or, [85 90 95 99]; or, [85 91 97 102]; or, [85 92 94 97]; or, [85 92 94 107]; or, [85 [92 97 107]; or, [85 93 94 97]; or, [85 93 94 107]; or, [85 93 97 107]; or, [85 93 101 107]; or, [85 94 96 97]; or, [85 94 97 107]; or, [85 94 98 107]; or, [86 92 100 107]; or, [87 88 90 105]; or, [87 88 105 106]; or, [87 94 98 106]; or, [87 94 98 107]; or, [87 94 105 106]; or, [88 92 97]

[105] ; or, [88 92 97 106]; or, [88 92 105 106]; or, [88 93 97 106]; or, [88 97 103 105]; or, [88 97 105 106]; or, [89 92 94 105]; or, [89 92 94 106]; or, [89 92 94 107]; or, [89 92 105 106]; or, [89 94 105 106]; or, [91 97 102 106]; or, [91 97 105 106];Alternatively, [91 100 105 106]; or, [91 104 105 106]; or, [92 94 97 105]; or, [92 94 97 106]; or, [92 94 97 107]; or, [92 94 100 105]; or, [92 94 100 106]; or, [92 94 100 107]; or, [92 94 105 106]; or, [92 97 105 106]; or, [92 100 105 106]; or, [93 94 97 106]; or, [93 94 97 107]; or, [94 97 105]

[106] ; or, [94100 105 106]; or, [94 104 105 106];

[0822] Alternatively, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 8 OFDMs. The sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or, [15 23 37 62]; or, [2 6 26 36]; or, [16 20 42 45]; or, [2 11 40 46]; or, [17 26 52 61]; or, [2 26 36 40]; or, [17 41 61 64]; or, [2 27 41 51]; or, [17 52 61 69]; or, [3 7 18 50]; or, [17 53 61 64]; or, [3 7 [18 61]; or, [18 41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; or, [19 31 47 66]; or, [3 18 46 50]; or, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 [12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; or, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; or, [24 38 44 62]; or, [6 10 17 33]; or, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51] 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69];Alternatively, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; or, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67] 69]; or, [9 30 33 68]; or, [9 33 40 41]; or, [9 33 47 48]; or, [10 34 57 65]; or, [34 42 57 65]; or, [4 19 34 57]; or, [13 27 29 74]; or, [13 25 31 61]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 31 57 61];

[0823] Alternatively, each OFDM symbol carries 2 bits M, and the sequences in the first sequence set occupy 6 OFDMs. The sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 6 9 12]; or, [1 6 11 12]; or, [1 6 11 13]; or, [1 6 12 13]; or, [1 11 12 13]; or, [2 6 9 12]; or, [2 6 12 13]; or, [2 7 10 13]; or, [2 7 12 13]; or, [3 4 10 13]; or, [3 4 10 14]; or, [3 5 8 10]; or, [3 5 10 14]; or, [3 8 10

[13] ; or, [6 11 12 13]; or, [7 8 10 13]; or, [7 11 12 13];

[0824] Alternatively, each OFDM symbol carries 1 bit M, the first sequence set occupies 8 OFDMs, and the sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 2 6 16]; or, [2 9 15 17]; or, [6 12 14 17]; or, [1 2 8 18]; or, [2 9 15 18]; or, [6 13 15 17]; or, [1 2 16 18]; or, [2 9 16 18]; or, [6 14 16 19]; or, [1 6 12 13]; or, [2 10 16 19]; or, [6 14 17 19]; or, [1 6 12 16]; or, [2 10 16 19]; or, [6 14 17 19]; or, [1 6 12 16]; or, [2 10 16 19]; [10 17 19]; or, [6 15 17 19]; or, [1 6 13 16]; or, [2 15 17 19]; or, [7 8 12 13]; or, [1 8 12 13]; or, [2 15 18 19]; or, [7 8 12 18]; or, [1 8 12 18]; or, [2 16 18 19]; or, [7 8 13 18]; or, [1 8 13 18]; or, [3 6 7 13]; or, [7 12 13 18]; or, [1 12 13 16]; or, [3 6 13 17]; or, [8 9 10 13]; or, [1 [12 13 18]; or, [3 6 17 19]; or, [8 9 13 18]; or, [1 12 16 18]; or, [3 7 13 18]; or, [8 9 14 18]; or, [1 13 16 18]; or, [4 5 13 17]; or, [8 10 11 12]; or, [2 3 6 7]; or, [4 9 10 13]; or, [8 10 12 13]; or, [2 3 6 17]; or, [4 9 10 17]; or, [8 11 12 14]; or, [2 3 6 19]; or, [4 9 13 17]; or, [8 11 12] 18]; or, [2 3 7 18]; or, [4 9 14 17]; or, [8 11 14 18]; or, [2 3 17 19]; or, [4 10 13 17]; or, [8 12 13 18]; or, [2 3 18 19]; or, [4 10 17 19]; or, [8 12 14 18]; or, [2 4 5 17]; or, [4 14 17 19];Or, [8 14 18 19]; or, [2 4 9 10]; or, [5 6 11 12]; or, [9 10 13 16]; or, [2 4 9 17]; or, [5 6 12 13]; or, [9 10 13 17]; or, [2 4 10 17]; or, [5 6 12 17]; or, [9 13 15 17]; or, [2 4 10 19]; or, [5 6 13 17]; or, [9 13 15 18]; or, [2 4 17 19]; or, [5 11 12 18]; or, [9 13 16 18]; or, [2 5 6 17]; or, [5 [12 13 17]; or, [9 14 16 18]; or, [2 6 9 15]; or, [5 12 13 18]; or, [10 11 12 16]; or, [2 6 9 16]; or, [6 7 12 13]; or, [10 12 13 16]; or, [2 6 9 17]; or, [6 9 13 15]; or, [10 12 13 17]; or, [2 6 15 17]; or, [6 9 13 16]; or, [11 12 14 16]; or, [2 6 15 19]; or, [6 9 13 17]; or, [11 12 14] 18]; or, [2 6 16 19]; or, [6 9 14 16]; or, [11 12 16 18]; or, [2 6 17 19]; or, [6 9 14 17]; or, [11 14 16 18]; or, [2 7 8 18]; or, [6 9 15 17]; or, [12 13 16 18]; or, [2 8 9 10]; or, [6 11 12 14]; or, [12 14 16 18]; or, [2 8 9 18]; or, [6 11 12 16]; or, [14 16 18 19]; or, [2 8 10 19]; or, [6 11 [14 16]; or, [2 8 18 19]; or, [6 12 13 16]; or, [2 9 10 16]; or, [6 12 13 17]; or, [2 9 10 17]; or, [6 12 14 16]; or, [10 14 20 21]; or, [10 14 21 22];

[0825] Alternatively, each OFDM symbol carries 1 bit M, the sequence in the first sequence set occupies 6 OFDMs, the sequence number of the sequence in the first sequence set is the following combination, or the first sequence set includes at least two sequences from the sequence number of the following combination: [1 2 3 4].

[0826] Fifthly, a communication method is provided, wherein the execution subject of the method may be a network device or a chip, chip system or circuit for a network device, and the method may be implemented by the following steps: generating a low-power synchronization signal (LP-SS) according to a first sequence and sending the low-power synchronization signal;

[0827] Each OFDM symbol carries 4 bits M. The first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0828] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0829] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0830] [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0];

[0831] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0832] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0];

[0833] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1];

[0834] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0];

[0835] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0836] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[0837] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]；

[0838] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0839] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]；

[0840] [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0841] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[0842] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0843] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]；

[0844] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]；

[0845] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]；

[0846] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0847] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0848] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0849] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0850] [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]；

[0851] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0852] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0853] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0854] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0855] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0856] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0857] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]；

[0858] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0859] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]；

[0860] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0861] [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0862] [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]；

[0863] [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]；

[0864] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0865] [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0866] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]；

[0867] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0];

[0868] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0869] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0870] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0871] [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0];

[0872] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0873] [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0874] [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0875] [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0876] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0877] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0878] [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0879] [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0880] [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0881] [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0882] [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]；

[0883] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]；

[0884] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]；

[0885] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0886] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]；

[0887] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]；

[0888] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]；

[0889] [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]；

[0890] [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]；

[0891] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0892] [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]；

[0893] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]；

[0894] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[0895] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0896] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[0897] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0898] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0];

[0899] [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1];

[0900] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[0901] [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[0902] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[0903] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[0904] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[0905] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[0906] [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1];

[0907] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0908] [1 0 0 1 0 1 0 1 1 0 0 1];

[0909] [1 0 0 1 1 0 0 1 0 1 0 1];

[0910] [1 0 0 1 1 0 1 0 0 1 0 1];

[0911] [1 0 0 1 1 0 1 0 1 0 0 1];

[0912] [1 0 1 0 0 1 0 1 1 0 0 1];

[0913] [1 0 1 0 0 1 1 0 0 1 0 1];

[0914] [1 0 1 0 1 0 0 1 1 0 0 1];

[0915] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0916] [1 0 0 0 1 0 1 1];

[0917] [1 0 0 0 1 1 0 1];

[0918] [1 0 0 1 0 1 0 1];

[0919] [1 0 0 1 1 0 1 0];

[0920] [1 0 1 0 0 0 1 1];

[0921] [1 0 1 0 0 1 1 0];

[0922] [1 0 1 0 1 0 0 1];

[0923] [1 0 1 0 1 1 0 0];

[0924] [1 0 1 1 0 0 0 1];

[0925] [1 1 0 0 0 1 0 1];

[0926] [1 1 0 0 1 0 1 0];

[0927] [1 1 0 1 0 0 0 1];

[0928] [1 0 1 0 1 0 1 0];

[0929] [1 0 1 0 0 1 0 1];

[0930] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0931] [1 0 0 1 0 1];

[0932] [1 0 1 0 0 1].

[0933] Sixthly, a communication method is provided, wherein the subject executing the method may be a terminal device or a chip, chip system or circuit for the terminal device, and the method may be implemented by the following steps: receiving a low-power synchronization signal and detecting the low-power synchronization signal according to a first sequence.

[0934] Each OFDM symbol carries 4 bits M. The first sequence occupies 8 OFDMs. The first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0935] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0936] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1];

[0937] [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0];

[0938] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1];

[0939] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0];

[0940] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1];

[0941] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0];

[0942] [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1];

[0943] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[0944] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]；

[0945] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0946] [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]；

[0947] [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0948] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[0949] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0950] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]；

[0951] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]；

[0952] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]；

[0953] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0954] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0955] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0956] [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0957] [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]；

[0958] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0959] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]；

[0960] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]；

[0961] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0962] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[0963] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0964] [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]；

[0965] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0966] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]；

[0967] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0968] [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]；

[0969] [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]；

[0970] [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]；

[0971] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[0972] [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0973] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]；

[0974] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]；

[0975] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1];

[0976] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[0977] [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1];

[0978] [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0];

[0979] [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1];

[0980] [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0];

[0981] [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1];

[0982] [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0];

[0983] [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0];

[0984] [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0];

[0985] [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0];

[0986] [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1];

[0987] [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0];

[0988] [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1];

[0989] [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1];

[0990] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]；

[0991] [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]；

[0992] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]；

[0993] [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]；

[0994] [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]；

[0995] [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]；

[0996] [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]；

[0997] [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]；

[0998] [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]；

[0999] [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]；

[1000] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]；

[1001] [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]；

[1002] [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]；

[1003] [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]；

[1004] [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]；

[1005] [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]；

[1006] [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]；

[1007] [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1];

[1008] [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0];

[1009] [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0];

[1010] [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1];

[1011] [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1];

[1012] [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1];

[1013] [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1];

[1014] Alternatively, each OFDM symbol carries 2 bits M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[1015] [1 0 0 1 0 1 0 1 1 0 0 1];

[1016] [1 0 0 1 1 0 0 1 0 1 0 1];

[1017] [1 0 0 1 1 0 1 0 0 1 0 1];

[1018] [1 0 0 1 1 0 1 0 1 0 0 1];

[1019] [1 0 1 0 0 1 0 1 1 0 0 1];

[1020] [1 0 1 0 0 1 1 0 0 1 0 1];

[1021] [1 0 1 0 1 0 0 1 1 0 0 1];

[1022] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 8 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[1023] [1 0 0 0 1 0 1 1];

[1024] [1 0 0 0 1 1 0 1];

[1025] [1 0 0 1 0 1 0 1];

[1026] [1 0 0 1 1 0 1 0];

[1027] [1 0 1 0 0 0 1 1];

[1028] [1 0 1 0 0 1 1 0];

[1029] [1 0 1 0 1 0 0 1];

[1030] [1 0 1 0 1 1 0 0];

[1031] [1 0 1 1 0 0 0 1];

[1032] [1 1 0 0 0 1 0 1];

[1033] [1 1 0 0 1 0 1 0];

[1034] [1 1 0 1 0 0 0 1];

[1035] [1 0 1 0 1 0 1 0];

[1036] [1 0 1 0 0 1 0 1];

[1037] Alternatively, each OFDM symbol carries 1 bit M, the first sequence occupies 6 OFDMs, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences:

[1038] [1 0 0 1 0 1];

[1039] [1 0 1 0 0 1].

[1040] Seventhly, this application also provides a communication device, which is a terminal device or a chip for a terminal device. The communication device has the function of implementing any of the methods provided in the second, fourth, or sixth aspects above. The communication device can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[1041] In one possible design, the communication device includes a processor configured to support the communication device in performing corresponding functions of the terminal device described above. The communication device may also include a memory coupled to the processor, which stores necessary program instructions and data for the communication device. Optionally, the communication device further includes interface circuitry for supporting communication between the communication device and devices such as network devices, for example, the transmission and reception of data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[1042] In one possible design, the communication device includes corresponding functional modules, each used to implement the steps in the above method. The functions can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

[1043] In one possible design, the communication device includes a processing unit (or processing module) and a communication unit (or communication module). These units can perform the corresponding functions in the above method examples, as described in the methods provided in the second, fourth, or sixth aspects, and will not be repeated here.

[1044] Eighthly, this application also provides a communication device, which is a network device or a chip for a network device. The communication device has the function of implementing any of the methods provided in the first, third, or fifth aspects described above. The communication device can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above-described functions.

[1045] In one possible design, the communication device includes a processor configured to support the communication device in performing the corresponding functions of the network device described above. The communication device may also include a memory coupled to the processor, which stores necessary program instructions and data for the communication device. Optionally, the communication device further includes interface circuitry for supporting communication between the communication device and devices such as terminal devices, for example, the transmission and reception of data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[1046] In one possible design, the communication device includes corresponding functional modules, each used to implement the steps in the above method. The functions can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

[1047] In one possible design, the communication device includes a processing unit (or processing module) and a communication unit (or communication module). These units can perform the corresponding functions in the above method examples, as described in the methods provided in the first, third, or fifth aspects, and will not be repeated here.

[1048] A ninth aspect provides a communication device including a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices outside the communication device and transmit them to the processor or to send signals from the processor to other communication devices outside the communication device, the processor being configured to implement the methods of the aforementioned second, fourth, or sixth aspects and any possible design via logic circuits or execution code instructions.

[1049] In a tenth aspect, a communication device is provided, including a processor and an interface circuit. The interface circuit is configured to receive signals from other communication devices outside the communication device and transmit them to the processor, or to send signals from the processor to other communication devices outside the communication device. The processor is configured to implement the methods described in the first, third, or fifth aspects and any possible designs, through logic circuits or execution code instructions.

[1050] Eleventhly, a computer-readable storage medium is provided that stores a computer program or instructions that, when executed by a processor, implement the methods of any one of the first to sixth aspects and any possible design.

[1051] In a twelfth aspect, a computer program product storing instructions is provided, which, when executed by a processor, implements any of the first to sixth aspects and any possible design methods described above.

[1052] In a thirteenth aspect, a chip system is provided, comprising a processor and potentially a memory, for implementing the methods of any of the first to sixth aspects and any possible designs described above. The chip system may be composed of chips or may include chips and other discrete devices.

[1053] In a fourteenth aspect, a communication system is provided, the system comprising the apparatus of the first aspect (such as a network device) and the apparatus of the second aspect (such as a terminal device).

[1054] In a fifteenth aspect, a communication system is provided, the system comprising the apparatus of the third aspect (such as a network device) and the apparatus of the fourth aspect (such as a terminal device).

[1055] In a sixteenth aspect, a communication system is provided, the system comprising the apparatus of the fifth aspect (such as a network device) and the apparatus of the sixth aspect (such as a terminal device).

[1056] The technical effects that can be achieved by the technical solutions of any of the seventh to sixteenth aspects mentioned above can be described with reference to the technical effects that can be achieved by the technical solutions of the first aspect mentioned above, and the repeated parts will not be repeated. Attached Figure Description

[1057] Figure 1 is a schematic diagram of the architecture of a communication system provided in this application;

[1058] Figure 2 is a schematic diagram of the generation of an OOK signal provided in this application;

[1059] Figure 3 is a flowchart illustrating a communication method provided in this application;

[1060] Figure 4 is a schematic diagram of an autocorrelation function provided in this application;

[1061] Figure 5 is a schematic diagram of an OFDM symbol provided in this application;

[1062] Figure 6 is a schematic diagram of an OFDM symbol provided in this application;

[1063] Figure 7 is a schematic diagram of a cross-correlation function provided in this application;

[1064] Figure 8 is a schematic diagram of the structure of a communication device provided in this application;

[1065] Figure 9 is a schematic diagram of the structure of a communication device provided in this application. Detailed Implementation

[1066] The technical solutions provided in the embodiments of this application can be applied to various communication systems, such as long term evolution (LTE) communication systems, the sixth generation (5G) mobile communication systems / new radio (NR) communication systems, or they can also be applied to future mobile communication systems, or other similar communication systems. Other similar communication systems may include wireless fidelity (WIFI), vehicle-to-everything (V2X) systems, internet of things (IoT) systems, and so on.

[1067] Please refer to Figure 1, which illustrates a communication system applicable to an embodiment of this application. The communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system may also include the Internet (Figure 1 uses this as an example).

[1068] The wireless access network 100 may include at least one network device and at least one terminal device. For example, the wireless access network 100 includes two network devices, 110a and 110b, and terminal devices 120a to 120j. The network architecture shown in Figure 1 is only schematic; the number of terminal devices and / or network devices may be fewer or more. The communication system described in the embodiments of this application is for the purpose of more clearly illustrating the technical solutions of the embodiments of this application and does not constitute a limitation on the communication system to which the embodiments of this application are applicable. For example, the communication system may also include other devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1. As those skilled in the art will know, with the evolution of network architecture, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems. When applying the technical solutions of the embodiments of this application to other communication systems, the devices, components, modules, etc. in the embodiments can be replaced with corresponding devices, components, modules in other communication systems without limitation.

[1069] In this embodiment, network equipment refers to (radio)access network ((R)AN) equipment / RAN node. In this embodiment, (R)AN and RAN are interchangeable. RAN can be a cellular system related to the 3rd generation partnership project (3GPP), such as a 5G / NR mobile communication system or a future-oriented evolution system. RAN can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), a virtualized RAN (vRAN), a non-terrestrial network (NTN), etc. RAN can also be a communication system that integrates two or more of the above systems. RAN equipment can also be called a RAN node, RAN entity, or access node, etc.

[1070] In one possible scenario, a RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), or a base station in a future mobile communication system. RAN nodes can also be macro base stations, micro base stations, indoor stations, relay nodes, donor / host nodes, or radio controllers. RAN nodes can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, in V2X technology, the RAN node can be a roadside unit (RSU).

[1071] In another possible scenario, the RAN node can be a module or unit that performs some of the functions of the base station; or multiple RAN nodes can cooperate to assist terminal equipment in achieving wireless access, with different RAN nodes performing some of the functions of the base station. For example, the RAN node can be a CU, DU, or RU. The function of the CU can be implemented by a single entity or by different entities. For example, the function of the CU can be further divided, that is, the control plane and the user plane can be separated and implemented by different entities, namely the control plane CU entity (i.e., CU-control plane (CP) entity) and the user plane CU entity (i.e., CU-user plane (UP) entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the function of the RAN node. The CU and DU can be set up separately or included in the same network element, such as in the baseband unit (BBU). Any of the units among the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by software modules, hardware modules, or a combination of software modules and hardware modules.

[1072] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples.

[1073] The CU and DU can be configured according to the protocol layer functions of the wireless network they implement: for example, the CU can be configured to implement the functions of the Packet Data Convergence Protocol (PDCP) layer and above (such as the Radio Resource Control (RRC) layer and / or the Service Data Adaptation Protocol (SDAP) layer); the DU can be configured to implement the functions of the protocol layers below the PDCP layer (such as the Radio Link Control (RLC) layer, the Media Access Control (MAC) layer, and / or the Physical (PHY) layer). For specific descriptions of the above protocol layers, please refer to the relevant 3GPP technical specifications or the technical specifications of other applicable communication protocols.

[1074] The above division of the processing functions of CU and DU according to protocol layers is merely an example; other division methods are also possible, and this application does not limit this. For example, in one design, CU or DU can be further divided into processing functions with protocol layers. In one design, some functions of the RLC layer and the functions of the protocol layer above the RLC layer are located in the CU, while the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are located in the DU.

[1075] In another possible design, the DU and RU collaborate to implement the PHY layer functionality, or, more specifically, a portion of the PHY layer functionality of the DU can be moved to the RU. A DU can be connected to one or more RUs. The functions of the DU and RU can be configured in various ways depending on the design. For example, the DU may be configured to implement baseband functions, and the RU may be configured to implement mid-RF functions. Alternatively, the DU may be configured to implement higher-level functions in the PHY layer, and the RU may be configured to implement lower-level functions in the PHY layer, or both lower-level and RF functions. Higher-level functions in the physical layer may include a portion of the physical layer's functionality closer to the MAC layer, and lower-level functions may include another portion of the physical layer's functionality closer to the mid-RF side. This application does not limit the specific functions of the DU and RU. The interface between the DU and RU can be called a fronthaul interface. In one design, the CU may not have a PDCP layer; for example, the CU may only include an RRC layer. The CU-CP may not have PDCP-C. The CU-UP may not have PDCP-U, or may not have a CU-UP. In one design, the DU may not have an RLC layer; for example, the DU may only have a MAC and a higher PHY layer.

[1076] When the RAN is O-RAN, it can also have artificial intelligence (AI) capabilities. For example, O-RAN includes an intelligent controller. The intelligent controller can be a non-real-time RAN intelligent controller (RIC / non-RT RIC / NRT RIC) or a near-real-time RAN intelligent controller (RIC / near-RT RIC / nRT RIC). A non-real-time RIC can be used to implement non-real-time intelligent management of RAN functions, enabling workflows including model training and model updates, and guiding applications / functions in the nRT RIC based on policies. A near-real-time RIC can be used to implement near-real-time intelligent management of the RAN. Through data collection and related operations on the E2 interface, near-real-time control and optimization of O-RAN modules and resources are achieved.

[1077] In this application embodiment, anything capable of data communication with a base station can be considered a terminal device. Terminal devices are also called terminals, terminal equipment, user equipment (UE), mobile stations, or mobile terminals, etc. Terminal devices can be widely used in various scenarios. For example, terminal devices can be: mobile phones, computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, stations (STA), robotic arms, cameras, robots, vehicles, drones, helicopters, airplanes, ships, or smart home devices (such as televisions, air conditioners, robot vacuums, speakers, set-top boxes), relays, customer premises equipment (CPE), etc.

[1078] Furthermore, in this embodiment, the terminal device can also be a terminal device in an IoT system, such as a water meter or electricity meter. IoT is an important component of future information technology development. Its main technical characteristic is connecting objects to networks through communication technology, thereby realizing an intelligent network that enables human-machine interconnection and object-to-object interconnection.

[1079] When the terminal device is applied to V2X, it can also be called a V2X device, such as a smart car, an unmanned car, a driverless car, a pilotless car, or an automobile, or a roadside unit (RSU). All the terminal devices described above, if located on a vehicle (e.g., placed / installed inside the vehicle), can be considered in-vehicle terminal devices. In-vehicle terminal devices can be built into a vehicle's on-board module, on-board unit, on-board component, on-board chip, or on-board unit as one or more components or units. The vehicle can implement the methods of this application through the built-in on-board module, on-board unit, on-board component, on-board chip, or on-board unit. In-vehicle terminal devices can be vehicle equipment, on-board modules, vehicles, on-board units (OBU), RSUs, in-vehicle infotainment systems (or on-board transmitting units) (telematics boxes, T-boxes), chips, or SoCs, etc., and the aforementioned chips or SoCs can be installed in the vehicle, OBU, RSU, or T-box.

[1080] Taking a network device as a base station and a terminal device as a UE as an example, the base station and UE can be fixed or mobile. The base station and UE can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of the base station and UE.

[1081] The roles of base station and UE can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For UE 120j accessing the radio access network 100 through 120i, UE 120i is the base station; however, for base station 110a, 120i is the UE, meaning that 110a and 120i communicate via a radio interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base station and UE can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with UE functions.

[1082] The communication system applicable to the embodiments of this application has been described above. To facilitate understanding of the technical solutions provided by the embodiments of this application, the relevant technical terms involved in the embodiments of this application will be explained below. It should be noted that these explanations are intended to make the embodiments of this application easier to understand and should not be regarded as a limitation on the scope of protection claimed by this application.

[1083] (1)LP-SS

[1084] The synchronization signal received through the LP interface can be called LP-SS. The LP interface can be understood as being designed to reduce power consumption; for example, it is implemented using a simple circuit or chip, resulting in low power consumption. This application does not limit the specific form of the LP interface. For example, the LP interface can be implemented using a wake-up receiver (WUR), a low-power wake-up receiver (LP-WUR), a low-power radio (LR), a wake-up module, or a wake-up circuit. In this document, WUR can refer to a wake-up radio or a wake-up receiver. WUR in this document is interchangeable with LP-WUR, LR, wake-up module, or wake-up circuit.

[1085] (2) Generation process of OOK-4 waveform

[1086] It should be understood that on-off keying (OOK) modulation uses the presence or absence of a signal to represent digital information. The bit information corresponding to the signal is mapped to at least one time unit through OOK modulation. The bit information of the signal is determined by detecting whether there is a signal in the time unit. A signal in a time unit means that the signal amplitude in the time unit is not zero; this time unit is also called an ON time unit, or the time unit is in ON mode. Conversely, a signal in a time unit means that the signal amplitude in the time unit is zero; this time unit is also called an OFF time unit, or the time unit is in OFF mode. Generally, if a sequence is transmitted in a time unit, then there is a signal in that time unit; if no sequence is transmitted in a time unit, then there is no signal in that time unit. For a time unit, if the time unit is ON or in ON mode, it can be decoded as 1; conversely, if the time unit is OFF or in OFF mode, it can be decoded as 0. In OOK, the time unit is a symbol; correspondingly, an ON time unit is an ON symbol, and an OFF time unit is an OFF symbol.

[1087] OOK-4 refers to an OOK modulation scheme in which the total number of ON and / or OFF symbols carried on an OFDM symbol is M, meaning each OFDM symbol can carry M bits through ON / OFF symbols. For example, M = 2, 4, or 8.

[1088] In this embodiment, the LP-SS supports OOK-4 waveform, or the data corresponding to the LP-SS is transmitted via OOK-4 waveform, or the LP-SS supports OOK-4 modulation.

[1089] Please refer to Figure 2, which is a schematic diagram of the OOK-4 waveform generation process. Figure 2 uses M=4 as an example. As shown in Figure 2, the generation of the OOK-4 waveform includes steps 1 to 6, where step 3 is optional and not mandatory. Unless otherwise specified, the symbols in Figure 2 refer to OFDM symbols.

[1090] Step 1: Obtain the sequence used to generate LP-SS, for example, sequence X.

[1091] Step 2: Map all the bits in sequence X to at least one OFDM symbol, for example, M=4, where each OFDM symbol can carry 4 bits.

[1092] Step ③: Map bit 0 of sequence X to [0,1] and bit 1 of sequence X to [1,0]; or, map bit 0 of sequence X to [1,0] and bit 1 of sequence X to [0,1]. That is, perform Manchester encoding on sequence X.

[1093] Step 4: At bit 0 in the time domain, it is a sequence of all zeros; at bit 1 in the time domain, it is a sequence of complex numbers.

[1094] Step 5: Obtain the frequency domain signal by performing a discrete fourier transform (DFT) on the time domain signal, and then map it onto the RE position (e.g., RE0 to RE N-1) of the LP-SS.

[1095] Step 6: Perform an inverse fast fourier transform (IFFT) on the sequence obtained in step 5, and add a CP to the IFFT sequence to obtain an LP-SS OFDM symbol.

[1096] (3) Cyclic prefix / CP

[1097] A cyclic prefix (CP) is constructed by copying the signal from the tail of an OFDM symbol to the head. CPs can be classified into several types based on their length. For example, one type of CP is the normal cyclic prefix (NCP), which has a length of 4.7 microseconds (µs); another type is the extended cyclic prefix (ECP), which has a length of 16.67 µs.

[1098] (4) Time unit

[1099] A time unit generally refers to a unit of time. A time unit can be a radio frame, subframe, slot, mini-slot, OFDM symbol, millisecond (ms), or fractional milliseconds (e.g., 1 / 32 ms). Alternatively, a time unit can be multiple slots, multiple subframes, multiple mini-slots, multiple OFDM symbols, or several milliseconds (ms) or fractional milliseconds. A radio frame can include multiple subframes, a subframe can include one or more slots, and a slot can include at least one symbol. Alternatively, a radio frame can include multiple slots, and a slot can include at least one symbol.

[1100] (5) In the embodiments of this application, "transmission" includes "sending" and / or "receiving". "Sending" and "receiving" indicate the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission by other units or modules via the air interface. "Receiving information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY by other units or modules via the air interface. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between access network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[1101] In this application embodiment, the number of nouns, unless otherwise specified, refers to "singular nouns or plural nouns," that is, "one or more." "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A / B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and / or c means the following combinations: a exists alone, b exists alone, c exists alone, a and b exist simultaneously, a and c exist simultaneously, b and c exist simultaneously, or a, b, and c exist simultaneously, where a, b, and c can be single or multiple.

[1102] In the embodiments of this application, "when," "if," and "if" all refer to the device taking corresponding actions under certain objective circumstances, and are not time-limited, nor do they require the device to perform a judgment action, nor do they imply any other limitations. Unless otherwise specified, "if" and "if" can be substituted, and "when" and "in the case of" can be substituted. "When" and "if" / "if" can be substituted.

[1103] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[1104] The ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects.

[1105] In the embodiments of this application, the solutions in each embodiment can be used in a reasonable combination, and the explanations or descriptions of various terms, similar operations, or steps appearing in the embodiments can be referenced or explained to each other in the embodiments, without limitation.

[1106] Before transmitting data, network devices and terminal devices perform time and frequency synchronization. For example, a network device sends a Service Message (SS) generated based on a specific sequence, and the terminal device detects this SS based on the specific sequence to achieve time and frequency synchronization between the terminal device and the network device. To reduce the power consumption of terminal devices, LP-SS (Local Level Message-Synchronizer) is introduced. The network device sends the LP-SS to the terminal device, and the terminal device checks the LP-SS to achieve time and frequency synchronization between the terminal device and the network device. However, the currently used LP-SS sequences limit the synchronization detection performance (e.g., timing estimation performance) of LP-SS.

[1107] Based on this, embodiments of this application provide a communication method and apparatus. In this application, by making the number of bits with a value of 0 and the number of bits with a value of 1 equal in the generated LP-SS sequence, the power of different sequences is made the same, thereby improving the synchronization detection performance of LP-SS. Furthermore, when the number of bits M carried by each OFDM symbol is greater than 1, the number of bits with a value of 0 and the number of bits with a value of 1 on each OFDM symbol can also be made equal. This method ensures that the power of each OFDM symbol is the same, thereby further improving the synchronization detection performance of LP-SS.

[1108] Furthermore, the detection performance of a sequence can generally be evaluated using the autocorrelation function / cross-correlation function. The larger the value of the autocorrelation function (e.g., the sidelobe value, trough value, main lobe width, etc.), the better the detection performance of the sequence. The smaller the value of the cross-correlation function between two sequences (e.g., the peak value, main lobe value, etc.), the smaller the interference between the two sequences, and thus the better the detection performance of the two sequences.

[1109] Since LP-SS multiplexes the CP-OFDM signal generation process, the resulting CP component affects the autocorrelation and cross-correlation characteristics of LP-SS. This application considers the sequence's CP when evaluating the sequence's detection performance using autocorrelation / cross-correlation functions, which can further improve the accuracy of the autocorrelation / cross-correlation function evaluation, thereby further enhancing the synchronous detection performance of LP-SS.

[1110] In addition, the first bit of the sequence can be constrained to 1, which is beneficial for automatic gain control (AGC) function.

[1111] The solution provided by the embodiments of this application is described below with reference to the accompanying drawings and specific examples. In the following description, the sequence used to generate LP-SS will be referred to as the first sequence.

[1112] In this application, the number of bits M carried by each OFDM symbol can also be described as the number of segments in OOK-4.

[1113] Referring to Figure 3, this is a schematic flowchart of a signal transmission method provided in this application. The method includes:

[1114] S301, the network device generates a low-power synchronization signal based on the first sequence.

[1115] For details on the specific generation method, please refer to the relevant description in the terminology introduction (2) above. It will not be repeated here.

[1116] In one possible implementation, the selected first sequence can satisfy at least one of the following: the sidelobe value of the autocorrelation function is less than or equal to a first value, the trough value of the autocorrelation function is less than or equal to a second value, or the main lobe width of the autocorrelation function is less than or equal to a third value; wherein, the autocorrelation function is related to at least one of the following: the number of OFDM symbols occupied by the sequence, the number of bits M carried by each OFDM symbol, and CP. For example, the sidelobe value, trough value, and main lobe width of the autocorrelation function can be as shown in Figure 4.

[1117] This method can also be understood as determining a suitable first sequence based on factors affecting the synchronization detection performance of the low-power synchronization signal (such as the number of time units occupied by the first sequence, the number of bits M carried by each time unit, and waveform parameters of the low-power synchronization signal, such as CP, etc.), thereby ensuring that the determined first sequence can guarantee the synchronization detection performance of the low-power synchronization signal. Unless otherwise specified, the time unit occupied by the sequence refers to the OFDM symbol (this will be used as an example below).

[1118] In one possible implementation, the selected first sequence can satisfy the following condition: the number of bits with a value of 0 is equal to the number of bits with a value of 1.

[1119] Furthermore, when the number of bits M carried by each OFDM symbol is greater than 1 (e.g., M equals 2, 4, etc.), the first sequence can satisfy the following: the number of bits with a value of 0 and the number of bits with a value of 1 are equal in each OFDM symbol. For example, Figure 5 shows a schematic diagram of an OFDM signal when each OFDM symbol carries 4 bits. Figure 6 shows a schematic diagram of an OFDM signal when each OFDM symbol carries 2 bits. This method ensures that the power of each OFDM symbol is the same, thereby further improving the synchronization detection performance of low-power synchronization signals.

[1120] When each OFDM symbol carries M bits equal to 1, the first sequence can satisfy the following condition: the number of OFDM symbols carrying bits with a value of 0 is equal to the number of OFDM symbols carrying bits with a value of 1. This ensures that different sequences have the same power, thereby further improving the synchronization detection performance of low-power synchronization signals.

[1121] In one exemplary description, a bit with a value of 1 can also be called an OOK on symbol. A bit with a value of 0 can also be called an OOK off symbol. Based on this, the above scheme can also be described as follows: when the number of bits M carried by each OFDM symbol is greater than 1 (e.g., M equals 2, 4, etc.), the first sequence can satisfy: the number of OOK on symbols and the number of OOK off symbols on each OFDM symbol are equal. When the number of bits M carried by each OFDM symbol is equal to 1, the first sequence can satisfy: the number of OOK on symbols and the number of OOK off symbols are equal.

[1122] The value of M in this application is only an example, and this application does not limit the value of M.

[1123] Optionally, the selected first sequence can also satisfy the condition that the first bit is 1. This method, by constraining the first bit of the first sequence to 1, is beneficial for the AGC function.

[1124] The first sequence will be illustrated below for the cases where M = 1, 2, and 4.

[1125] Example 1-1: Each OFDM symbol carries 4 bits (M). Assume the first sequence occupies 8 OFDMs; when M=4, the length of the first sequence is 32. The first sequence can be any sequence from Table 1 or an equivalent sequence of any sequence from Table 1.

[1126] Optionally, an equivalent sequence of a sequence can be the reverse or inverted sequence of that sequence, such as for the sequence [S] = [s0, s1, ..., s...]. N-1 The reverse sequence of the sequence [S] is [s]. N-1 If the sequence S consists of 0s and 1s, i.e. s1, s0, ..., s0, then... i If ∈{0,1}, then the inverse sequence of the sequence S is [1-s0,1-s1,…,1-s...]. N-1 If the sequence S consists of 1 and -1, that is, s i If ∈{1,-1}, then the inverse sequence of the sequence S is [-s0,-s1,…,-s N-1 The equivalent sequences discussed below are similar and will not be explained again.

[1127] Table 1

[1128] Optionally, the first sequence may also satisfy the following condition: the first bit is 1. For example, the first sequence may be an equivalent sequence of any sequence in Table 1 whose first bit is 1 (e.g., sequences 36-69, 71, 73-75, 77-79 in Table 1) or any sequence in Table 1 whose first bit is 1 (e.g., sequences 36-69, 71, 73-75, 77-79 in Table 1).

[1129] In Example 1-2, each OFDM symbol carries 2 bits (M). Assume the first sequence occupies 8 OFDMs; when M=2, the length of the first sequence is 16. The first sequence can be any sequence from Table 2 or an equivalent sequence of any sequence from Table 2.

[1130] Table 2

[1131] Optionally, the first sequence may also satisfy the following condition: the first bit is 1. For example, the first sequence may be any sequence in Table 2 with the first bit being 1 (e.g., sequences 38 to 74 in Table 2) or an equivalent sequence of any sequence in Table 2 with the first bit being 1 (e.g., sequences 38 to 74 in Table 2).

[1132] In Examples 1-3, each OFDM symbol carries 2 bits (M). Assume the first sequence occupies 6 OFDMs; when M=2, the length of the first sequence is 12. The first sequence can be any sequence from Table 3 or an equivalent sequence of any sequence from Table 3.

[1133] Table 3

[1134] Optionally, the first sequence may also satisfy the following condition: the first bit is 1. For example, the first sequence may be an equivalent sequence of any sequence in Table 3 with the first bit being 1 (e.g., sequences 8 to 14 in Table 3) or any sequence in Table 3 with the first bit being 1 (e.g., sequences 8 to 15 in Table 3).

[1135] In Examples 1-4, each OFDM symbol carries 1 bit M. Assume the first sequence occupies 8 OFDMs; when M=1, the length of the first sequence is 8. The first sequence can be any sequence in Table 4 or an equivalent sequence of any sequence in Table 4.

[1136] Table 4

[1137] Optionally, the first sequence may also satisfy the following condition: the first bit is 1. For example, the first sequence may be any sequence in Table 4 with the first bit being 1 (e.g., sequence 8 to sequence 21 in Table 4) or an equivalent sequence of any sequence in Table 4 with the first bit being 1 (e.g., sequence 8 to sequence 21 in Table 4).

[1138] In Examples 1-5, each OFDM symbol carries 1 bit M. Assume the first sequence occupies 6 OFDMs; when M=1, the length of the first sequence is 6. The first sequence can be any sequence in Table 5 or an equivalent sequence of any sequence in Table 5.

[1139] Table 5

[1140] Optionally, the first sequence may also satisfy the following condition: the first bit is 1. For example, the first sequence may be any sequence in Table 5 with the first bit being 1 (e.g., sequence 3 to sequence 4 in Table 5) or an equivalent sequence of any sequence in Table 5 with the first bit being 1 (e.g., sequence 3 to sequence 4 in Table 5).

[1141] It should be understood that Tables 1 to 5 are only for illustrating the possible scenarios of the first sequence and do not imply that the sequences in Tables 1 to 5 constitute a set of candidate sequences for the first sequence. Furthermore, the sequence numbers in Tables 1 to 5 are only for ease of description, and this application does not limit the sequence numbers.

[1142] The autocorrelation functions of the sequences in Tables 1 to 5 above satisfy at least one of the following: sidelobe value is less than or equal to the first value, trough value is less than or equal to the second value, or main lobe width is less than or equal to the third value. Specifically, the autocorrelation functions of the sequences in Tables 1 to 5 are related to at least one of the following: the number of OFDM symbols occupied by the sequence, the number of bits M carried by each OFDM symbol, and CP. Considering the CP of the sequence when evaluating the detection performance of the sequence using the autocorrelation function can improve the accuracy of the autocorrelation function / cross-correlation function evaluation, thereby improving the synchronization detection performance of low-power synchronization signals.

[1143] Furthermore, in Examples 1-1 to 1-3, the number of bits with a value of 0 and the number of bits with a value of 1 are equal in each OFDM symbol. This ensures that each OFDM symbol has the same power, thereby further improving the synchronization detection performance of the low-power synchronization signal. In Examples 1-4 and 1-5, the number of OFDM symbols carrying bits with a value of 0 is equal to the number of OFDM symbols carrying bits with a value of 1. This also ensures that different sequences have the same power, further improving the synchronization detection performance of the low-power synchronization signal.

[1144] Furthermore, Examples 1-1 to 1-5 can also constrain the first bit of the sequence to 1, which can be beneficial for the AGC function.

[1145] In one possible scenario, the low-power synchronization signal can correspond to multiple sequences, including a first sequence. The network device selects the sequence used for the low-power synchronization signal of a cell from these multiple sequences. In this scenario, efforts are made to ensure that adjacent cells select different sequences to enhance inter-cell anti-interference capabilities. In this scenario, the multiple sequences can be a set of the first sequences.

[1146] Optionally, in this scenario, the maximum value of the cross-correlation function between any two sequences in the first sequence set is less than or equal to the fourth value. The cross-correlation function is related to at least one of the following: the number of OFDM symbols occupied by the sequence, the number of bits M carried by each OFDM symbol, and CP. For example, the maximum value of the cross-correlation function can be shown in Figure 7.

[1147] Other sequences in the first sequence set, besides the first sequence, can also satisfy at least one of the following: the sidelobe value of the autocorrelation function is less than or equal to the first value, the trough value of the autocorrelation function is less than or equal to the second value, or the main lobe width of the autocorrelation function is less than or equal to the third value.

[1148] Other sequences in the first sequence set, besides the first sequence, can also satisfy the following: the number of bits with a value of 0 is equal to the number of bits with a value of 1.

[1149] The following example uses four sequences corresponding to low-power synchronization signals (i.e., the first sequence set includes four sequences) as an example, and combines the above examples 1 and 2 to illustrate the first sequence set.

[1150] Example 2-1: Each OFDM symbol carries 4 bits M. Assume the first sequence set occupies 8 OFDMs. The first sequence set can be (or includes) any combination of sequences in Table 6, or an equivalent combination of any combination of sequences in Table 6; or, the first sequence set can include at least two sequences from any combination of sequences in Table 6, or at least two sequences from an equivalent combination of any combination of sequences in Table 6. An equivalent combination of a sequence combination can be a sequence combination obtained by replacing any one or more sequences in that sequence combination with equivalent sequences. The equivalent combinations discussed below are similar and will not be repeated. Furthermore, the aforementioned at least two sequences are any at least two sequences in that combination. The at least two sequences discussed below are similar and will not be repeated.

[1151] Table 6

[1152] The serial numbers mentioned above refer to the serial numbers in Table 1. Therefore, the serial numbers corresponding to the serial numbers can be found in Table 1, and will not be explained in detail here.

[1153] In one possible approach, the first bit of at least one sequence in the first sequence set is 1.

[1154] Example 2-2: Each OFDM symbol carries 2 bits M. Assume that the sequence in the first sequence set occupies 8 OFDMs. The first sequence set can be (or include) any combination of sequences in Table 7, or an equivalent combination of any combination of sequences in Table 7; or, the first sequence set can include at least two sequences from any combination of sequences in Table 7, or at least two sequences from an equivalent combination of any combination of sequences in Table 7.

[1155] Table 7

[1156] The serial numbers mentioned above refer to the serial numbers in Table 2. Therefore, the serial numbers corresponding to the serial numbers can be found in Table 2, which will not be explained in detail here.

[1157] In one possible approach, the first bit of at least one sequence in the first sequence set is 1.

[1158] Example 2-3: Each OFDM symbol carries 2 bits M. Assume that the sequence in the first sequence set occupies 6 OFDMs. The first sequence set can be (or include) any combination of sequences in Table 8, or an equivalent combination of any combination of sequences in Table 8; or, the first sequence set can include at least two sequences from any combination of sequences in Table 8, or at least two sequences from an equivalent combination of any combination of sequences in Table 8.

[1159] Table 8

[1160] The serial numbers mentioned above refer to the serial numbers in Table 3. Therefore, the serial numbers corresponding to the serial numbers can be found in Table 3, which will not be explained in detail here.

[1161] In one possible approach, the first bit of at least one sequence in the first sequence set is 1.

[1162] Example 2-4: Each OFDM symbol carries 1 bit M. Assume the first sequence set occupies 8 OFDMs. The first sequence set can be (or include) any combination of sequences in Table 9, or an equivalent combination of any combination of sequences in Table 9; or, the first sequence set can include at least two sequences from any combination of sequences in Table 9, or at least two sequences from an equivalent combination of any combination of sequences in Table 9.

[1163] Table 9

[1164] The serial numbers mentioned above refer to the serial numbers in Table 4. Therefore, the serial numbers corresponding to the serial numbers can be found in Table 4, which will not be explained in detail here.

[1165] In one possible approach, the first bit of at least one sequence in the first sequence set is 1.

[1166] Example 2-5: Each OFDM symbol carries 1 bit M. Assume the first sequence set occupies 6 OFDMs. The first sequence set can be (or include) combinations of sequences in Table 10, or equivalent combinations of combinations of sequences in Table 10; or, the first sequence set can include at least two sequences from any combination of sequences in Table 10, or at least two sequences from any equivalent combination of combinations of sequences in Table 10.

[1167] Table 10

[1168] The serial numbers mentioned above refer to the serial numbers in Table 5. Therefore, the serial numbers corresponding to the serial numbers can be found in Table 5, and will not be explained in detail here.

[1169] In one possible approach, the first bit of at least one sequence in the first sequence set is 1.

[1170] The maximum value of the cross-correlation function of any two sequences in the sequence combinations listed in Tables 6 to 10 is less than or equal to the fourth value. The cross-correlation function of the sequences in Tables 6 to 10 is related to at least one of the following: the number of OFDM symbols occupied by the sequence, the number of bits M carried by each OFDM symbol, and the CP. Considering the CP of the sequence when evaluating the detection performance using the cross-correlation function can further improve the accuracy of the autocorrelation function / cross-correlation function evaluation, thereby further improving the synchronization detection performance of low-power synchronization signals.

[1171] Furthermore, Tables 6 to 10 above are merely examples of the first sequence set. In specific implementations, the first sequence set can also be any combination of the first sequences listed above, or include any number of the first sequences listed above. For example, the first sequence set can include some sequences from a combination listed above. For instance, when M = 4 and the first sequence occupies 8 OFDM symbols, the first sequence set can also be a combination of any number of sequences in Table 1, or include any number of sequences in Table 1; when M = 2 and the first sequence occupies 8 OFDM symbols, the first sequence set can also be a combination of any number of sequences in Table 2, or include any number of sequences in Table 2; when M = 2 and the first sequence occupies 6 OFDM symbols, the first sequence set can also be a combination of any number of sequences in Table 4, or include any number of sequences in Table 4; and so on.

[1172] S302, the network device sends a low-power synchronization signal. Correspondingly, the terminal device receives the low-power synchronization signal.

[1173] S303, the terminal device detects the low-power synchronization signal according to the first sequence.

[1174] One approach is for the terminal device to process the low-power synchronization signal (e.g., perform related calculations) based on a local sequence, and determine the start and / or end positions of the low-power synchronization signal based on the processing results. The local sequence can be a first sequence or a set of sequences to which the first sequence belongs.

[1175] If the local sequence is the first sequence, the first sequence can be correlated with the low-power synchronization signal to determine the start and / or end position of the low-power synchronization signal.

[1176] If the local sequence is the sequence set to which the first sequence belongs, the sequences in the sequence set can be traversed and correlation calculations performed with the low-power synchronization signal. The start and / or end positions of the synchronization signal can be determined based on the correlation values ​​between each sequence and the low-power synchronization signal.

[1177] This application improves the synchronization detection performance of low-power synchronization signals by ensuring that the number of bits with a value of 0 and the number of bits with a value of 1 are equal in the sequence that generates the low-power synchronization signal, thereby making different sequences have the same power. Furthermore, when the number of bits M carried by each OFDM symbol is greater than 1, the number of bits with a value of 0 and the number of bits with a value of 1 can also be made equal in each OFDM symbol. This ensures that each OFDM symbol has the same power, further improving the synchronization detection performance of the low-power synchronization signal.

[1178] Furthermore, the detection performance of a sequence can generally be evaluated using autocorrelation functions / cross-correlation functions. A larger autocorrelation function value (e.g., sidelobe value, trough value, main lobe width, etc.) indicates better detection performance, while a smaller cross-correlation function value (e.g., peak value, main lobe value, etc.) between two sequences indicates less interference between them, thus resulting in better detection performance. This application considers the sequence's CP (Constant Proportion) when evaluating the detection performance using autocorrelation / cross-correlation functions, which can further improve the accuracy of the evaluation and thus further enhance the synchronization detection performance of low-power synchronization signals.

[1179] In addition, the first bit of the sequence can be constrained to 1, which is beneficial for AGC functionality.

[1180] Based on the same inventive concept as the method embodiment, this application provides a communication device, the structure of which can be as shown in FIG8, including a communication unit 601 and a processing unit 602.

[1181] In one embodiment, the communication device can specifically be used to implement the method executed by the network device in the embodiment of FIG3. The device can be the network device itself, or a chip or chipset within the network device, or a part of the chip used to execute the relevant method function. Specifically, the processing unit 602 is used to generate a low-power synchronization signal according to a first sequence; the communication unit 601 is used to transmit the low-power synchronization signal; the first sequence can be referred to the relevant description in FIG3.

[1182] In one embodiment, the communication device can specifically be used to implement the method executed by the terminal device in the embodiment of FIG3. The device can be the terminal device itself, or a chip or chipset in the terminal device, or a part of the chip for executing the relevant method function. Specifically, the communication unit 601 is used to receive a low-power synchronization signal; the processing unit 602 is used to detect the low-power synchronization signal according to a first sequence; wherein the first sequence can be referred to the relevant description in FIG3.

[1183] The module division in this application embodiment is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules. It is understood that the functions or implementations of the modules in the embodiments of this application can be further described in the relevant descriptions of the method embodiments.

[1184] In one possible embodiment, the communication device can be as shown in FIG9. This device can be a communication equipment or a chip within a communication equipment, wherein the communication equipment can be the terminal device or the network device described in the above embodiments. The device includes a processor 701 and a communication interface 702, and may also include a memory 703. The processing unit 602 can be the processor 701. The communication unit 601 can be the communication interface 702. Optionally, the processor 701 and the memory 703 can also be integrated together.

[1185] The processor 701 can be a CPU, a digital processing unit, or something similar. The communication interface 702 can be a transceiver, an interface circuit such as a transceiver circuit, or a transceiver chip, etc. The device also includes a memory 703 for storing the program executed by the processor 701. The memory 703 can be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it can be volatile memory, such as random-access memory (RAM). The memory 703 can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited to this.

[1186] The processor 701 is used to execute the program code stored in the memory 703, specifically to perform the actions of the processing unit 602 described above, which will not be described in detail here. The communication interface 702 is specifically used to perform the actions of the communication unit 601 described above, which will not be described in detail here.

[1187] This application embodiment does not limit the specific connection medium between the communication interface 702, processor 701, and memory 703. In Figure 9, the memory 703, processor 701, and communication interface 702 are connected via a bus 704, which is represented by a thick line. The connection methods between other components are merely illustrative and not intended to be limiting. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is used in Figure 9, but this does not imply that there is only one bus or one type of bus.

[1188] This invention also provides a computer-readable storage medium for storing computer software instructions required to execute the processor, including a program required to execute the processor.

[1189] This application also provides a communication system, including a communication device for implementing the terminal device function in the embodiment of FIG3 and a communication device for implementing the network device function in the embodiment of FIG3.

[1190] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[1191] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[1192] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[1193] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[1194] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; In the first sequence, the number of bits with a value of 0 is equal to the number of bits with a value of 1.

2. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; In the first sequence, the number of bits with a value of 0 is equal to the number of bits with a value of 1.

3. The method as described in claim 1 or 2, characterized in that, The first sequence contains an equal number of bits with a value of 0 and a number of bits with a value of 1, including: Each OFDM symbol carries a bit M greater than 1, and the first sequence carries an equal number of bits with a value of 0 and bits with a value of 1 in each OFDM symbol.

4. The method according to any one of claims 1-3, characterized in that, The first sequence is associated with one or more of the following: the number of OFDM symbols occupied by the first sequence, the number of bits M carried by each OFDM symbol, and the cyclic prefix CP.

5. The method according to any one of claims 1-4, characterized in that, The autocorrelation function of the first sequence satisfies at least one of the following: the sidelobe value is less than or equal to the first value, the trough value is less than or equal to the second value, or the main lobe width is less than or equal to the third value; The autocorrelation function is related to at least one of the following: the number of OFDM symbols occupied by the first sequence, the number of bits M carried by each OFDM symbol, and the CP.

6. The method according to any one of claims 1-5, characterized in that, Each OFDM symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0]; Sequence 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Sequence 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Sequence 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Sequence 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]; Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1]; Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Ranking 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Ranking 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]; Ranking 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0]; Ranking 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; hierarchy 90：[0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0]； hierarchy 91：[0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]； Ranking 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0]; Ranking 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0]; Sequence 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0].

7. The method according to any one of claims 1-6, characterized in that, Each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0]; Sequence 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0]; Sequence 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0]; Sequence 8: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 9: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Sequence 10: [0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0]; Sequence 13: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Sequence 15: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0]; Sequence 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0]; Sequence 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Sequence 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Sequence 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0]; Sequence 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1]; Sequence 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Sequence 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0]; Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]; Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]; Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]; Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]; Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Ranking 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Ranking 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1].

8. The method according to any one of claims 1-6, characterized in that, Each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1]; Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1]; Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1]; Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1]; Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1].

9. The method according to any one of claims 1-8, characterized in that, Each OFDM symbol carries M bits of 1, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 0 1 1 0 1 0 1]; Sequence 2: [0 1 0 1 0 0 1 1]; Sequence 3: [0 1 0 1 0 1 1 0]; Sequence 4: [0 1 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 1 0 1 0]; Sequence 6: [0 1 1 0 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0]; Sequence 8: [1 0 0 0 1 0 1 1]; Sequence 9: [1 0 0 0 1 1 0 1]; Sequence 10: [1 0 0 1 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0]; Sequence 12: [1 0 1 0 0 0 1 1]; Sequence 13: [1 0 1 0 0 1 1 0]; Sequence 14: [1 0 1 0 1 0 0 1]; Sequence 15: [1 0 1 0 1 1 0 0]; Sequence 16: [1 0 1 1 0 0 0 1]; Sequence 17: [1 1 0 0 0 1 0 1]; Sequence 18: [1 1 0 0 1 0 1 0]; Sequence 19: [1 1 0 1 0 0 0 1]; Sequence 20: [1 0 1 0 1 0 1 0]; Sequence 21: [1 0 1 0 0 1 0 1]; Sequence 22: [0 1 0 1 0 1 0 1].

10. The method according to any one of claims 1-8, characterized in that, Each OFDM symbol carries M bits of 1, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 1 0]; Sequence 2: [0 1 1 0 1 0]; Sequence 3: [1 0 0 1 0 1]; Sequence 4: [1 0 1 0 0 1].

11. The method as described in claim 6, characterized in that, Each OFDM symbol carries 4 bits M. The first sequence belongs to a first sequence set. The sequence numbers of the sequences in the first sequence set are the following combination, or the first sequence set includes at least two sequences with sequence numbers in the following combination: [1 33 46 50]; or [10 22 33 62]; Alternatively, [19 22 33 69]; or [23 27 34 65]; Or, [2 21 37 55]; Alternatively, [10 22 33 69]; or, [21 24 33 46]; or, [23 31 34 65]; Alternatively, [2 37 47 55]; or, [10 33 62 65]; or, [21 25 55 67]; or, [23 29 60 65]; or, [2 21 24 38]; or, [11 15 21 67]; or, [21 23 34 36]; or, [23 33 60 65]; or, [2 24 38 40]; or, [11 21 25 67]; or, [21 23 27 34]; or, [23 27 60 65]; or, [2 24 40 68]; or, [12 41 49 63]; or, [21 23 31 34]; or, [23 60 [62 65]; or, [2 9 48 53]; or, [12 25 48 59]; or, [21 23 34 65]; Alternatively, [23 31 60 65]; or [2 24 38 48]; or [12 35 50 59]; Alternatively, [21 23 36 65]; or, [23 33 36 65]; or, [2 24 38 47]; or, [13 21 24 46]; or, [21 23 27 65]; or, [23 27 33 65]; or, [3 17 29 69]; or, [14 20 26 63]; or, [21 23 31 64]; or, [23 33 62 65]; or, [3 29 54 69]; or, [14 21 25 67]; or, [21 23 31 65]; or, [24 33 46 68]; or, [4 37 47 55]; or, [14 21 [26 67]; or, [22 38 41 58]; or, [24 43 57 61]; Alternatively, [4 36 47 55]; or, [14 20 28 58]; or, [22 33 41 49]; or, [24 38 40 65]; or, [5 32 43 61]; or, [15 21 55 67]; or, [22 33 41 66]; or, [24 38 40 43]; or, [6 11 20 51]; Alternatively, [15 42 55 67]; or, [22 33 48 64]; or, [24 39 47 58]; or, [6 20 25 55]; or, [15 21 39 52]; or, [22 38 48 65]; or, [24 38 48 65]; or, [6 11 20 25]; or, [15 33 49 54]; or, [22 33 48 65]; Alternatively, [24 33 48 65]; or, [6 7 38 65]; or, [15 33 42 54]; or, [22 33 48 59]; Or, [24 38 47 58]; Or, [6 45 54 65]; Alternatively, [16 45 54 65]; or [22 35 50 59]; Alternatively, [24 28 47 58]; or, [7 16 38 65]; or, [18 22 41 58]; or, [22 33 54 65]; or, [25 33 48 59]; or, [7 24 38 65]; or, [18 22 33 41]; or, [22 33 49 54]; or, [25 33 54 59]; or, [7 14 18 65]; or, [18 41 47 58]; or, [22 33 54 59]; or, [27 30 33 69]; or, [8 33 44 60]; or, [18 33 41 47]; or, [22 33 [61 62]; or, [27 33 60 69]; or, [8 33 60 65]; or, [18 22 33 65]; or, [22 33 61 69]; or, [27 34 60 65]; or, [9 48 53 64]; or, [18 22 33 68]; or, [23 29 34 60]; Alternatively, [27 33 60 65]; or [10 23 34 60]; Alternatively, [19 28 55 56]; or, [23 27 34 60]; or, [28 41 47 58]; or, [10 23 34 65]; Alternatively, [19 24 28 43]; or, [23 27 33 60]; or, [29 34 61 65]; or, [10 23 33 60]; or, [19 29 30 34]; or, [23 33 60 62]; or, [29 34 60 65]; or, [10 23 60 62]; Or, [19 29 34 60]; Alternatively, [23 31 34 60]; or, [31 34 60 65]; or, [10 23 60 69]; or, [19 27 30 34]; or, [23 29 60 69]; or, [33 45 48 65]; or, [10 23 60 65]; or, [19 27 34 60]; Alternatively, [23 33 60 69]; or [33 45 54 65]; or [10 23 33 62]; Alternatively, [19 27 30 33]; or, [23 27 60 69]; or, [33 59 60 62]; or, [10 23 33 69]; or, [19 27 33 60]; or, [23 31 60 69]; or, [33 61 62 65]; or, [10 23 33 65]; or, [19 29 30 69]; or, [23 27 33 69]; or, [33 60 62 65]; or, [10 23 62 65]; Alternatively, [19 29 60 69]; or, [23 29 60 64]; or, [38 41 47 58]; or, [10 34 60 65]; or, [19 30 33 69]; or, [23 33 60 64]; or, [40 45 54 65]; or, [10 33 60 62]; Alternatively, [19 27 30 69]; or, [23 31 60 64]; or, [10 33 60 69]; or, [19 33 60 69]; or, [23 29 34 65]; or, [10 33 60 65]; or, [19 27 60 69]; or, [23 34 60 65]; or, [10 60 62 65]; or, [19 27 33 69]; or, [23 34 36 65]; or, [73 41 74 75]; or, [76 58 39 77]; or, [78 79 37 51]; or, [22 4 25 80]; or, [4 21] [22 72]; or, [9 54 59 70]; Alternatively, [4 21 43 71]; or, [24 40 56 68]; or, [4 37 38 50]; or, [49 54 59 70]; or, [21 43 54 71]; or, [15 40 41 56]; or, [13 49 54 59]; or, [4 21 71 72]; Or, [4 43 49 71]; Alternatively, [15 20 40 56]; or, [33 49 54 59]; or, [24 38 40 68]; Alternatively, [43 49 54 71]; or [15 40 54 56]; or [21 54 59 70]; Or, [2 37 38 68]; Alternatively, [25 40 54 56]; or, [15 40 56 68]; or, [81 85 93 94]; or, [82 85 89 94]; or, [82 85 91 97]; or, [82 85 94 97]; or, [82 89 94 106]; or, [82 91 97 106]; or, [82 94 97 106]; or, [83 84 85 107]; or, [83 85 92 107]; or, [83 85 98 107]; or, [84 85 97 107]; or, [84 97 105 106]; or, [85 89 92] 94]; or, [85 89 92 107]; or, [85 89 94 107]; or, [85 90 93 99]; or, [85 90 93 101]; or, [85 90 95 99]; or, [85 91 97 102]; or, [85 92 94 97]; or, [85 92 94 107]; or, [85 92 97 107]; or, [85 93 94 97]; or, [85 93 94 107]; or, [85 93 97 107]; or, [85 93 101 107]; or, [85 94 96 97]; or, [85 [94 97 107]; or, [85 94 98 107]; or, [86 92 100 107]; or, [87 88 90 105]; or, [87 88 105 106]; or, [87 94 98 106]; or, [87 94 98 107]; or, [87 94 105 106]; or, [88 92 97 105]; or, [88 92 97 106]; or, [88 92 105 106]; or, [88 93 97 106]; or, [88 97 103 105]; or, [88 97 105 106]; or, [89 [92 94 105]; or, [89 92 94 106]; or, [89 92 94 107]; or, [89 92 105 106]; or, [89 94 105 106]; or, [91 97 102 106]; or, [91 97 105 106]; or, [91 100 105 106]; or, [91 104 105 106]; or, [92 94 97 105]; or, [92 94 97 106]; or, [92 94 97 107];Alternatively, [92 94 100 105]; or [92 94 100 106]; or [92 94 100 107]; or [92 94 105 106]; or [92 97 105 106]; or [92 100 105 106]; or [93 94 97 106]; or [93 94 97 107]; or [94 97 105 106]; or [94 100 105 106]; or [94 104 105 106].

12. The method as described in claim 7, characterized in that, Each OFDM symbol carries M bits of 2. The first sequence belongs to a first sequence set. The sequence numbers of the sequences in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or [15 23 37 62]; or [2 6 26 36]; or [16 20 42 45]; or [2 11 40 46]; or [17 26 52 61]; or [2 26 36 40]; or [17 41 61 64]; or [2 27 41 51]; or [17 52 61 69]; or [3 7 18 50]; or [17 53 61 64]; or [3 7 18 50]; 61]; or, [18 41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; Alternatively, [19 31 47 66]; or [3 18 46 50]; Alternatively, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; Alternatively, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; Alternatively, [24 38 44 62]; or [6 10 17 33]; Alternatively, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69]; or, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; Alternatively, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67 69]; or, [9 30 33 68]; or, [9 33 40 41]; Alternatively, [9 33 47 48]; or [10 34 57 65]; or [34 42 57 65]; Or, [4 19 34 57]; Alternatively, [13 27 29 74]; or, [13 25 31 61]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 31 57 61].

13. The method as described in claim 8, characterized in that, Each OFDM symbol carries 2 bits M. The first sequence belongs to a first sequence set. The sequence numbers of the sequences in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 6 9 12]; or, [1 6 11 12]; or, [1 6 11 13]; or, [1 6 12 13]; or, [1 11 12 13]; or, [2 6 9 12]; or, [2 6 12 13]; or, [2 7 10 13]; or, [2 7 12 13]; or, [3 4 10 13]; or, [3 4 10 14]; or, [3 5 8 10]; or, [3 5 10 14]; or, [3 8 10 13]; or, [6 6 9 12]; or, [1 6 9 12]; or, [1 6 9 12]; or, [2 ...7 10 13]; or, [2 7 12 13]; or, [3 4 10 13]; or, [3 4 10 14]; or, [3 5 8 10]; or, [3 5 10 14]; or, [3 8 10 13]; or, [6 5 8 10 [11 12 13]; or, [7 8 10 13]; or, [7 11 12 13].

14. The method as described in claim 9, characterized in that, Each OFDM symbol carries M bits of 1. The first sequence belongs to a first sequence set. The sequence numbers of the sequences in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 2 6 16]; or [2 9 15 17]; or [6 12 14 17]; or [1 2 8 18]; or [2 9 15 18]; or [6 13 15 17]; or [1 2 16 18]; or [2 9 16 18]; or [6 14 16 19]; or [1 6 12 13]; or [2 10 16 19]; or [6 14 17 19]; or [1 6 12 16]; or [2 10 17 19] 19]; or, [6 15 17 19]; or, [1 6 13 16]; or, [2 15 17 19]; or, [7 8 12 13]; or, [1 8 12 13]; or, [2 15 18 19]; or, [7 8 12 18]; or, [1 8 12 18]; or, [2 16 18 19]; or, [7 8 13 18]; or, [1 8 13 18]; or, [3 6 7 13]; or, [7 12 13 18]; or, [1 12 13 16]; or, [3 6 13 17]; or, [8 9 10 13]; or, [1 12 13] 18]; or, [3 6 17 19]; or, [8 9 13 18]; or, [1 12 16 18]; or, [3 7 13 18]; or, [8 9 14 18]; or, [1 13 16 18]; or, [4 5 13 17]; or, [8 10 11 12]; or, [2 3 6 7]; or, [4 9 10 13]; or, [8 10 12 13]; or, [2 3 6 17]; or, [4 9 10 17]; or, [8 11 12 14]; or, [2 3 6 19]; or, [4 9 13 17]; or, [8 11 12] 18]; or, [2 3 7 18]; or, [4 9 14 17]; or, [8 11 14 18]; or, [2 3 17 19]; or, [4 10 13 17]; or, [8 12 13 18]; or, [2 3 18 19]; or, [4 10 17 19]; or, [8 12 14 18]; or, [2 4 5 17]; or, [4 14 17 19]; or, [8 14 18 19];Or, [2 4 9 10]; or, [5 6 11 12]; or, [9 10 13 16]; or, [2 4 9 17]; or, [5 6 12 13]; or, [9 10 13 17]; or, [2 4 10 17]; or, [5 6 12 17]; or, [9 13 15 17]; or, [2 4 10 19]; or, [5 6 13 17]; or, [9 13 15 18]; or, [2 4 17 19]; or, [5 11 12 18]; or, [9 13 16 18]; or, [2 5 6 17]; or, [5 12 13 17]; or, [9 [14 16 18]; or, [2 6 9 15]; or, [5 12 13 18]; or, [10 11 12 16]; or, [2 6 9 16]; or, [6 7 12 13]; or, [10 12 13 16]; or, [2 6 9 17]; or, [6 9 13 15]; or, [10 12 13 17]; or, [2 6 15 17]; or, [6 9 13 16]; or, [11 12 14 16]; or, [2 6 15 19]; or, [6 9 13 17]; or, [11 12 14 18]; or, [2 6 16] 19]; or, [6 9 14 16]; or, [11 12 16 18]; or, [2 6 17 19]; or, [6 9 14 17]; or, [11 14 16 18]; or, [2 7 8 18]; or, [6 9 15 17]; or, [12 13 16 18]; or, [2 8 9 10]; or, [6 11 12 14]; or, [12 14 16 18]; or, [2 8 9 18]; or, [6 11 12 16]; or, [14 16 18 19]; or, [2 8 10 19]; or, [6 11 14 16]; or, [2 8 [18 19]; or, [6 12 13 16]; or, [2 9 10 16]; or, [6 12 13 17]; or, [2 9 10 17]; or, [6 12 14 16]; or, [10 14 20 21]; or, [10 14 21 22].

15. The method as described in claim 10, characterized in that, Each OFDM symbol carries 1 bit M. The first sequence belongs to a first sequence set. The sequence numbers of the sequences in the first sequence set are the following combination, or the first sequence set includes at least two sequences whose sequence numbers are the following combination: [1 2 3 4].

16. The method according to any one of claims 11-15, characterized in that, The maximum value of the cross-correlation function of any two sequences in the first sequence set is less than or equal to the fourth value.

17. The method according to any one of claims 1-16, characterized in that, The first bit of the first sequence is 1.

18. The method according to any one of claims 1-5 and 17, characterized in that, Each OFDM symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]。 19. The method according to any one of claims 1-5 and 17-18, characterized in that, Each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]； [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]。 20. The method according to any one of claims 1-5 and 17-18, characterized in that, Each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1]。 21. The method according to any one of claims 1-5 and 17-20, characterized in that, Each OFDM symbol carries M bits of 1, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 0 1 0 1 1]； [1 0 0 0 1 1 0 1]； [1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0]； [1 0 1 0 0 0 1 1]； [1 0 1 0 0 1 1 0]； [1 0 1 0 1 0 0 1]； [1 0 1 0 1 1 0 0]； [1 0 1 1 0 0 0 1]； [1 1 0 0 0 1 0 1]； [1 1 0 0 1 0 1 0]； [1 1 0 1 0 0 0 1]； [1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1]。 22. The method according to any one of claims 1-5 and 17-20, characterized in that, Each OFDM symbol carries M bits of 1, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1]； [1 0 1 0 0 1]。 23. The method according to any one of claims 1-5, characterized in that, Each OFDM symbol carries 4 bits M. The first sequence is [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; or, the first sequence is [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1]; or, the first sequence is [0 1 0 1 0 1 1 0]. 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1.

24. The method as described in claim 23, characterized in that, The first sequence belongs to a first sequence set, which includes: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0], [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1], [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1], and [0 1 0 1 0 1 1 0 ...1 0 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1].

25. The method according to any one of claims 1-5, characterized in that, Each OFDM symbol carries 2 bits M, and the first sequence is [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1].

26. The method as described in claim 25, characterized in that, The first sequence belongs to a first sequence set, which includes: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1] and [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1].

27. The method according to any one of claims 1-5, characterized in that, Each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1 0 1]; or, the first sequence is [1 0 1 0 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 0 1]; or, the first sequence is [0 1 0 1 0 1 0 1].

28. The method as described in claim 27, characterized in that, The first sequence belongs to a first sequence set, which includes: [1 0 0 1 0 1 0 1], [1 0 1 0 1 0 0 1], [1 0 1 0 0 1 0 1], and [0 1 0 1 0 1 0 1].

29. The method according to any one of claims 1-5, characterized in that, Each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1]; or, the first sequence is [1 0 1 0 0 1].

30. The method as described in claim 29, characterized in that, The first sequence belongs to a first sequence set, which includes: [1 0 0 1 0 1] and [1 0 1 0 0 1].

31. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; In this configuration, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M. The first sequence is [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; or, the first sequence is [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1]; or, the first sequence is [0 1 ... 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1.

32. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; In this configuration, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M. The first sequence is [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; or, the first sequence is [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1]; or, the first sequence is [0 1 ... 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1.

33. The method as described in claim 31 or 32, characterized in that, The first sequence belongs to a first sequence set, which includes: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0], [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1], [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1], and [0 1 0 1 0 1 1 0 ...1 0 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1].

34. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; Wherein, each OFDM symbol carries 2 bits M, and the first sequence is [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1].

35. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; Wherein, each OFDM symbol carries 2 bits M, and the first sequence is [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; or, the first sequence is [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1].

36. The method as described in claim 34 or 35, characterized in that, The first sequence belongs to a first sequence set, which includes: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1] and [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1].

37. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; Wherein, each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1 0 1]; or, the first sequence is [1 0 1 0 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 0 1]; or, the first sequence is [0 1 0 1 0 1 0 1].

38. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; Wherein, each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1 0 1]; or, the first sequence is [1 0 1 0 1 0 0 1]; or, the first sequence is [1 0 1 0 0 1 0 1]; or, the first sequence is [0 1 0 1 0 1 0 1].

39. The method as described in claim 37 or 38, characterized in that, The first sequence belongs to a first sequence set, which includes: [1 0 0 1 0 1 0 1], [1 0 1 0 1 0 0 1], [1 0 1 0 0 1 0 1], and [0 1 0 1 0 1 0 1].

40. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; In this case, each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1]; or, the first sequence is [1 0 1 0 0 1].

41. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; In this case, each OFDM symbol carries 1 bit M, and the first sequence is [1 0 0 1 0 1]; or, the first sequence is [1 0 1 0 0 1].

42. The method as described in claim 40 or 41, characterized in that, Each OFDM symbol carries 1 bit M. The first sequence belongs to the first sequence set, which includes [1 0 0 1 0 1] and [1 0 1 0 0 1].

43. A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; Wherein, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0]; Sequence 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Sequence 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]; Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1]; Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Ranking 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Ranking 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]; Ranking 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0]; Ranking 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 90: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0]; Ranking 91: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]; Ranking 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0]; Sequence 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Sequence 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0]; Sequence 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0]; Sequence 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0]; Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0]; Sequence 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0]; Sequence 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0]; Sequence 8: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 9: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Sequence 10: [0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0]; Sequence 13: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Sequence 15: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0]; Sequence 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Ranking 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Ranking 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1]; Ranking 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Ranking 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0]; Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]; Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]; Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]; Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]; Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Sequence 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Sequence 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Sequence 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Sequence 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Sequence 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1]; Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1]; Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1]; Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1]; Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1]; Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1]; Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 0 1 1 0 1 0 1]; Sequence 2: [0 1 0 1 0 0 1 1]; Sequence 3: [0 1 0 1 0 1 1 0]; Sequence 4: [0 1 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 1 0 1 0]; Sequence 6: [0 1 1 0 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0]; Sequence 8: [1 0 0 0 1 0 1 1]; Sequence 9: [1 0 0 0 1 1 0 1]; Sequence 10: [1 0 0 1 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0]; Sequence 12: [1 0 1 0 0 0 1 1]; Sequence 13: [1 0 1 0 0 1 1 0]; Sequence 14: [1 0 1 0 1 0 0 1]; Sequence 15: [1 0 1 0 1 1 0 0]; Sequence 16: [1 0 1 1 0 0 0 1]; Sequence 17: [1 1 0 0 0 1 0 1]; Sequence 18: [1 1 0 0 1 0 1 0]; Sequence 19: [1 1 0 1 0 0 0 1]; Sequence 20: [1 0 1 0 1 0 1 0]; Sequence 21: [1 0 1 0 0 1 0 1]; Sequence 22: [0 1 0 1 0 1 0 1]; Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 1 0]; Sequence 2: [0 1 1 0 1 0]; Sequence 3: [1 0 0 1 0 1]; Sequence 4: [1 0 1 0 0 1].

44. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; Wherein, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0]; Sequence 2: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 3: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Sequence 4: [0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0]; Sequence 5: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 6: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 7: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 8: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 9: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 10: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Ranking 11: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 12: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 13: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 14: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 15: [0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 16: [0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 17: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 18: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 19: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 20: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 21: [0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 22: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 23: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 26: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0]; Ranking 29: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 30: [0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 31: [0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 32: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 33: [0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 34: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 36: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 37: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 38: [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Ranking 39: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 40: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Ranking 41: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Ranking 42: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Ranking 43: [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 44: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 45: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 47: [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 48: [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 49: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 50: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 51: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 53: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 54: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 55: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 56: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 57: [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 58: [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]; Ranking 59: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 60: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]; Ranking 61: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 62: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 63: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 65: [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]; Ranking 66: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 67: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Ranking 68: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 69: [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 70: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 71: [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 72: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1]; Ranking 73: [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 74: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 75: [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 76: [0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 77: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]; Ranking 78: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 79: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Ranking 80: [0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Ranking 81: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 82: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 83: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 84: [0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]; Ranking 85: [0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0]; Ranking 86: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 87: [0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 88: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 89: [0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 90: [0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0]; Ranking 91: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0]; Ranking 92: [0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 93: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0]; Ranking 94: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 95: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 96: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 97: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0]; Ranking 98: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 99: [0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 1 0 0]; Ranking 100: [0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 101: [0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0]; Ranking 102: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Ranking 103: [0 0 0 1 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0]; Sequence 104: [0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 1 0 1 0 0 0]; Sequence 105: [0 0 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 0 0]; Sequence 106: [0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 1 0 0 0]; Sequence 107: [0 0 1 0 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0]; Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0]; Sequence 6: [0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0]; Sequence 7: [0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0]; Sequence 8: [0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 9: [0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]; Sequence 10: [0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [0 1 0 1 1 0 0 1 1 0 1 0 1 0 1 0]; Sequence 13: [0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]; Sequence 15: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 1 0]; Sequence 16: [0 1 0 1 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 17: [0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0]; Ranking 18: [0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]; Ranking 19: [0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 20: [0 1 1 0 0 1 0 1 0 1 1 0 1 0 0 1]; Ranking 21: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]; Ranking 22: [0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0]; Ranking 23: [0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 24: [0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 25: [0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Ranking 26: [0 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 27: [0 1 1 0 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 28: [0 1 1 0 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 29: [0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 30: [0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1]; Ranking 31: [0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 32: [0 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Ranking 33: [0 1 1 0 1 0 1 0 0 1 1 0 0 1 1 0]; Ranking 34: [0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1]; Ranking 35: [0 1 1 0 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 36: [0 1 1 0 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 37: [0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0]; Ranking 38: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 39: [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]; Ranking 40: [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]; Ranking 41: [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]; Ranking 42: [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 43: [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]; Ranking 44: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]; Ranking 45: [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]; Ranking 46: [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]; Ranking 47: [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]; Ranking 48: [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]; Ranking 49: [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]; Ranking 50: [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]; Ranking 51: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]; Ranking 52: [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]; Ranking 53: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]; Ranking 54: [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]; Ranking 55: [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]; Ranking 56: [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]; Ranking 57: [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]; Ranking 58: [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]; Ranking 59: [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]; Ranking 60: [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]; Ranking 61: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]; Ranking 62: [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]; Ranking 63: [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]; Ranking 64: [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]; Ranking 65: [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]; Ranking 66: [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]; Sequence 67: [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]; Sequence 68: [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]; Sequence 69: [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]; Sequence 70: [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]; Sequence 71: [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 72: [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 73: [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 74: [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 75: [0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1]; Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 0 1 0 1 1 0 0 1]; Sequence 2: [0 1 0 1 0 1 1 0 0 1 0 1]; Sequence 3: [0 1 0 1 0 1 1 0 1 0 0 1]; Sequence 4: [0 1 0 1 1 0 0 1 0 1 0 1]; Sequence 5: [0 1 1 0 0 1 0 1 0 1 0 1]; Sequence 6: [0 1 1 0 1 0 0 1 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0 1 0 0 1]; Sequence 8: [1 0 0 1 0 1 0 1 1 0 0 1]; Sequence 9: [1 0 0 1 1 0 0 1 0 1 0 1]; Sequence 10: [1 0 0 1 1 0 1 0 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0 1 0 0 1]; Sequence 12: [1 0 1 0 0 1 0 1 1 0 0 1]; Sequence 13: [1 0 1 0 0 1 1 0 0 1 0 1]; Sequence 14: [1 0 1 0 1 0 0 1 1 0 0 1]; Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 0 1 1 0 1 0 1]; Sequence 2: [0 1 0 1 0 0 1 1]; Sequence 3: [0 1 0 1 0 1 1 0]; Sequence 4: [0 1 0 1 1 0 0 1]; Sequence 5: [0 1 0 1 1 0 1 0]; Sequence 6: [0 1 1 0 0 1 0 1]; Sequence 7: [0 1 1 0 1 0 1 0]; Sequence 8: [1 0 0 0 1 0 1 1]; Sequence 9: [1 0 0 0 1 1 0 1]; Sequence 10: [1 0 0 1 0 1 0 1]; Sequence 11: [1 0 0 1 1 0 1 0]; Sequence 12: [1 0 1 0 0 0 1 1]; Sequence 13: [1 0 1 0 0 1 1 0]; Sequence 14: [1 0 1 0 1 0 0 1]; Sequence 15: [1 0 1 0 1 1 0 0]; Sequence 16: [1 0 1 1 0 0 0 1]; Sequence 17: [1 1 0 0 0 1 0 1]; Sequence 18: [1 1 0 0 1 0 1 0]; Sequence 19: [1 1 0 1 0 0 0 1]; Sequence 20: [1 0 1 0 1 0 1 0]; Sequence 21: [1 0 1 0 0 1 0 1]; Sequence 22: [0 1 0 1 0 1 0 1]; Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: Sequence 1: [0 1 0 1 1 0]; Sequence 2: [0 1 1 0 1 0]; Sequence 3: [1 0 0 1 0 1]; Sequence 4: [1 0 1 0 0 1].

45. The method as described in claim 43 or 44, characterized in that, The first sequence belongs to the first sequence set; Each OFDM symbol carries 4 bits M. The sequence numbers of the sequences in the first sequence set are the following combination, or the first sequence set includes at least two sequences whose sequence numbers are the following combination: [1 33 46 50]; or [10 22 33 62]; Alternatively, [19 22 33 69]; or [23 27 34 65]; Or, [2 21 37 55]; Alternatively, [10 22 33 69]; or, [21 24 33 46]; or, [23 31 34 65]; Alternatively, [2 37 47 55]; or, [10 33 62 65]; or, [21 25 55 67]; or, [23 29 60 65]; or, [2 21 24 38]; or, [11 15 21 67]; or, [21 23 34 36]; or, [23 33 60 65]; or, [2 24 38 40]; or, [11 21 25 67]; or, [21 23 27 34]; or, [23 27 60 65]; or, [2 24 40 68]; or, [12 41 49 63]; or, [21 23 31 34]; or, [23 60 [62 65]; or, [2 9 48 53]; or, [12 25 48 59]; or, [21 23 34 65]; Alternatively, [23 31 60 65]; or [2 24 38 48]; or [12 35 50 59]; Alternatively, [21 23 36 65]; or, [23 33 36 65]; or, [2 24 38 47]; or, [13 21 24 46]; or, [21 23 27 65]; or, [23 27 33 65]; or, [3 17 29 69]; or, [14 20 26 63]; or, [21 23 31 64]; or, [23 33 62 65]; or, [3 29 54 69]; or, [14 21 25 67]; or, [21 23 31 65]; or, [24 33 46 68]; or, [4 37 47 55]; or, [14 21 [26 67]; or, [22 38 41 58]; or, [24 43 57 61]; Alternatively, [4 36 47 55]; or, [14 20 28 58]; or, [22 33 41 49]; or, [24 38 40 65]; or, [5 32 43 61]; or, [15 21 55 67]; or, [22 33 41 66]; or, [24 38 40 43]; or, [6 11 20 51]; Alternatively, [15 42 55 67]; or, [22 33 48 64]; or, [24 39 47 58]; or, [6 20 25 55]; or, [15 21 39 52]; or, [22 38 48 65]; or, [24 38 48 65]; or, [6 11 20 25]; or, [15 33 49 54]; or, [22 33 48 65]; Alternatively, [24 33 48 65]; or, [6 7 38 65]; or, [15 33 42 54]; or, [22 33 48 59]; Or, [24 38 47 58]; Or, [6 45 54 65]; Alternatively, [16 45 54 65]; or [22 35 50 59]; Alternatively, [24 28 47 58]; or, [7 16 38 65]; or, [18 22 41 58]; or, [22 33 54 65]; or, [25 33 48 59]; or, [7 24 38 65]; or, [18 22 33 41]; or, [22 33 49 54]; or, [25 33 54 59]; or, [7 14 18 65]; or, [18 41 47 58]; or, [22 33 54 59]; or, [27 30 33 69]; or, [8 33 44 60]; or, [18 33 41 47]; or, [22 33 [61 62]; or, [27 33 60 69]; or, [8 33 60 65]; or, [18 22 33 65]; or, [22 33 61 69]; or, [27 34 60 65]; or, [9 48 53 64]; or, [18 22 33 68]; or, [23 29 34 60]; Alternatively, [27 33 60 65]; or [10 23 34 60]; Alternatively, [19 28 55 56]; or, [23 27 34 60]; or, [28 41 47 58]; or, [10 23 34 65]; Alternatively, [19 24 28 43]; or, [23 27 33 60]; or, [29 34 61 65]; or, [10 23 33 60]; or, [19 29 30 34]; or, [23 33 60 62]; or, [29 34 60 65]; or, [10 23 60 62]; Or, [19 29 34 60]; Alternatively, [23 31 34 60]; or, [31 34 60 65]; or, [10 23 60 69]; or, [19 27 30 34]; or, [23 29 60 69]; or, [33 45 48 65]; or, [10 23 60 65]; or, [19 27 34 60]; Alternatively, [23 33 60 69]; or [33 45 54 65]; or [10 23 33 62]; Alternatively, [19 27 30 33]; or, [23 27 60 69]; or, [33 59 60 62]; or, [10 23 33 69]; or, [19 27 33 60]; or, [23 31 60 69]; or, [33 61 62 65]; or, [10 23 33 65]; or, [19 29 30 69]; or, [23 27 33 69]; or, [33 60 62 65]; or, [10 23 62 65]; Alternatively, [19 29 60 69]; or, [23 29 60 64]; or, [38 41 47 58]; or, [10 34 60 65]; or, [19 30 33 69]; or, [23 33 60 64]; or, [40 45 54 65]; or, [10 33 60 62]; Alternatively, [19 27 30 69]; or, [23 31 60 64]; or, [10 33 60 69]; or, [19 33 60 69]; or, [23 29 34 65]; or, [10 33 60 65]; or, [19 27 60 69]; or, [23 34 60 65]; or, [10 60 62 65]; or, [19 27 33 69]; or, [23 34 36 65]; or, [73 41 74 75]; or, [76 58 39 77]; or, [78 79 37 51]; or, [22 4 25 80]; or, [4 21] [22 72]; or, [9 54 59 70]; Alternatively, [4 21 43 71]; or, [24 40 56 68]; or, [4 37 38 50]; or, [49 54 59 70]; or, [21 43 54 71]; or, [15 40 41 56]; or, [13 49 54 59]; or, [4 21 71 72]; Or, [4 43 49 71]; Alternatively, [15 20 40 56]; or, [33 49 54 59]; or, [24 38 40 68]; Alternatively, [43 49 54 71]; or [15 40 54 56]; or [21 54 59 70]; Or, [2 37 38 68]; Alternatively, [25 40 54 56]; or, [15 40 56 68]; or, [81 85 93 94]; or, [82 85 89 94]; or, [82 85 91 97]; or, [82 85 94 97]; or, [82 89 94 106]; or, [82 91 97 106]; or, [82 94 97 106]; or, [83 84 85 107]; or, [83 85 92 107]; or, [83 85 98 107]; or, [84 85 97 107]; or, [84 97 105 106]; or, [85 89 92] 94]; or, [85 89 92 107]; or, [85 89 94 107]; or, [85 90 93 99]; or, [85 90 93 101]; or, [85 90 95 99]; or, [85 91 97 102]; or, [85 92 94 97]; or, [85 92 94 107]; or, [85 92 97 107]; or, [85 93 94 97]; or, [85 93 94 107]; or, [85 93 97 107]; or, [85 93 101 107]; or, [85 94 96 97]; or, [85 [94 97 107]; or, [85 94 98 107]; or, [86 92 100 107]; or, [87 88 90 105]; or, [87 88 105 106]; or, [87 94 98 106]; or, [87 94 98 107]; or, [87 94 105 106]; or, [88 92 97 105]; or, [88 92 97 106]; or, [88 92 105 106]; or, [88 93 97 106]; or, [88 97 103 105]; or, [88 97 105 106]; or, [89 [92 94 105]; or, [89 92 94 106]; or, [89 92 94 107]; or, [89 92 105 106]; or, [89 94 105 106]; or, [91 97 102 106]; or, [91 97 105 106]; or, [91 100 105 106]; or, [91 104 105 106]; or, [92 94 97 105]; or, [92 94 97 106]; or, [92 94 97 107];Alternatively, [92 94 100 105]; or, [92 94 100 106]; or, [92 94 100 107]; or, [92 94 105 106]; or, [92 97 105 106]; or, [92 100 105 106]; or, [93 94 97 106]; or, [93 94 97 107]; or, [94 97 105 106]; or, [94 100 105 106]; or, [94 104 105 106]; Alternatively, each OFDM symbol carries 2 bits M, and the sequence numbers in the first sequence set are the following combinations, or the first sequence set includes at least two sequences whose sequence numbers are the following combinations: [1 9 30 33]; or, [15 23 37 62]; or, [2 6 26 36]; or, [16 20 42 45]; or, [2 11 40 46]; or, [17 26 52 61]; or, [2 26 36 40]; or, [17 41 61 64]; or, [2 27 41 51]; or, [17 52 61 69]; or, [3 7 18 50]; or, [17 53 61 64]; or, [3 7 18 61]; or, [18 [41 61 66]; or, [3 7 50 65]; or, [19 21 50 72]; or, [3 18 33 71]; Alternatively, [19 31 47 66]; or [3 18 46 50]; Alternatively, [19 31 58 66]; or, [3 22 33 54]; or, [19 34 47 48]; or, [3 50 60 65]; or, [22 32 33 49]; or, [3 53 61 63]; or, [23 34 40 70]; or, [4 11 24 67]; or, [24 28 44 70]; or, [4 12 24 34]; or, [24 29 35 55]; or, [4 24 34 53]; Alternatively, [24 30 68 70]; or, [4 24 37 60]; or, [24 34 35 70]; or, [5 16 19 50]; or, [24 37 44 62]; or, [5 16 42 45]; or, [24 38 43 45]; or, [5 42 45 65]; Alternatively, [24 38 44 62]; or [6 10 17 33]; Alternatively, [25 31 61 73]; or, [6 24 37 62]; or, [27 42 51 65]; or, [7 18 26 61]; or, [28 44 50 65]; or, [7 18 61 66]; or, [30 46 50 58]; or, [8 26 36 59]; or, [30 46 50 72]; or, [8 33 44 47]; or, [31 61 63 66]; or, [9 13 31 37]; or, [34 35 42 65]; or, [9 14 23 69]; or, [34 42 56 65]; or, [9 16 23 31]; or, [38 44 62 65]; or, [9 17 33 41]; or, [39 50 65 72]; or, [9 17 41 64]; or, [41 57 61 64]; or, [9 18 33 41]; or, [41 61 63 66]; or, [9 23 31 37]; or, [42 45 65 71]; or, [9 23 31 47]; or, [44 50 58 65]; Alternatively, [9 23 36 40]; or, [57 59 61 64]; or, [9 23 67 69]; or, [9 30 33 68]; or, [9 33 40 41]; Alternatively, [9 33 47 48]; or [10 34 57 65]; or [34 42 57 65]; Or, [4 19 34 57]; Alternatively, [13 27 29 74]; or, [13 25 31 61]; or, [4 10 34 57]; or, [23 27 29 55]; or, [13 25 57 61]; or, [31 50 74 75]; or, [25 31 57 61]; Alternatively, each OFDM symbol carries 2 bits M, and the sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences whose sequence numbers are combinations of the following: [1 6 9 12]; or, [1 6 11 12]; or, [1 6 11 13]; or, [1 6 12 13]; or, [1 11 12 13]; or, [2 6 9 12]; or, [2 6 12 13]; or, [2 7 10 13]; or, [2 7 12 13]; or, [3 4 10 13]; or, [3 4 10 14]; or, [3 5 8 10]; or, [3 5 10 14]; or, [3 8 10 13]; or, [6 11 [12 13]; or, [7 8 10 13]; or, [7 11 12 13]; Alternatively, each OFDM symbol carries 1 bit M, and the sequence numbers in the first sequence set are combinations of the following, or the first sequence set includes at least two sequences whose sequence numbers are combinations of the following: [1 2 6 16]; or, [2 9 15 17]; or, [6 12 14 17]; or, [1 2 8 18]; or, [2 9 15 18]; or, [6 13 15 17]; or, [1 2 16 18]; or, [2 9 16 18]; or, [6 14 16 19]; or, [1 6 12 13]; or, [2 10 16 19]; or, [6 14 17 19]; or, [1 6 12 16]; or, [2 10 17 19] 19]; or, [6 15 17 19]; or, [1 6 13 16]; or, [2 15 17 19]; or, [7 8 12 13]; or, [1 8 12 13]; or, [2 15 18 19]; or, [7 8 12 18]; or, [1 8 12 18]; or, [2 16 18 19]; or, [7 8 13 18]; or, [1 8 13 18]; or, [3 6 7 13]; or, [7 12 13 18]; or, [1 12 13 16]; or, [3 6 13 17]; or, [8 9 10 13]; or, [1 12 13] 18]; or, [3 6 17 19]; or, [8 9 13 18]; or, [1 12 16 18]; or, [3 7 13 18]; or, [8 9 14 18]; or, [1 13 16 18]; or, [4 5 13 17]; or, [8 10 11 12]; or, [2 3 6 7]; or, [4 9 10 13]; or, [8 10 12 13]; or, [2 3 6 17]; or, [4 9 10 17]; or, [8 11 12 14]; or, [2 3 6 19]; or, [4 9 13 17]; or, [8 11 12] 18]; or, [2 3 7 18]; or, [4 9 14 17]; or, [8 11 14 18]; or, [2 3 17 19]; or, [4 10 13 17]; or, [8 12 13 18]; or, [2 3 18 19]; or, [4 10 17 19]; or, [8 12 14 18]; or, [2 4 5 17]; or, [4 14 17 19]; or, [8 14 18 19];Or, [2 4 9 10]; or, [5 6 11 12]; or, [9 10 13 16]; or, [2 4 9 17]; or, [5 6 12 13]; or, [9 10 13 17]; or, [2 4 10 17]; or, [5 6 12 17]; or, [9 13 15 17]; or, [2 4 10 19]; or, [5 6 13 17]; or, [9 13 15 18]; or, [2 4 17 19]; or, [5 11 12 18]; or, [9 13 16 18]; or, [2 5 6 17]; or, [5 12 13 17]; or, [9 [14 16 18]; or, [2 6 9 15]; or, [5 12 13 18]; or, [10 11 12 16]; or, [2 6 9 16]; or, [6 7 12 13]; or, [10 12 13 16]; or, [2 6 9 17]; or, [6 9 13 15]; or, [10 12 13 17]; or, [2 6 15 17]; or, [6 9 13 16]; or, [11 12 14 16]; or, [2 6 15 19]; or, [6 9 13 17]; or, [11 12 14 18]; or, [2 6 16] 19]; or, [6 9 14 16]; or, [11 12 16 18]; or, [2 6 17 19]; or, [6 9 14 17]; or, [11 14 16 18]; or, [2 7 8 18]; or, [6 9 15 17]; or, [12 13 16 18]; or, [2 8 9 10]; or, [6 11 12 14]; or, [12 14 16 18]; or, [2 8 9 18]; or, [6 11 12 16]; or, [14 16 18 19]; or, [2 8 10 19]; or, [6 11 14 16]; or, [2 8 [18 19]; or, [6 12 13 16]; or, [2 9 10 16]; or, [6 12 13 17]; or, [2 9 10 17]; or, [6 12 14 16]; or, [10 14 20 21]; or, [10 14 21 22]; Alternatively, each OFDM symbol carries 1 bit M, and the sequence numbers of the sequences in the first sequence set are the following combination, or the first sequence set includes at least two sequences whose sequence numbers are the following combination: [1 2 3 4].

46. ​​A communication method, characterized in that, include: A low-power synchronization signal is generated based on the first sequence; Send the low-power synchronization signal; Wherein, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]； [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 0 1 0 1 1]； [1 0 0 0 1 1 0 1]； [1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0]； [1 0 1 0 0 0 1 1]； [1 0 1 0 0 1 1 0]； [1 0 1 0 1 0 0 1]； [1 0 1 0 1 1 0 0]； [1 0 1 1 0 0 0 1]； [1 1 0 0 0 1 0 1]； [1 1 0 0 1 0 1 0]； [1 1 0 1 0 0 0 1]； [1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1]； Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1]； [1 0 1 0 0 1]。 47. A communication method, characterized in that, include: Receive low-power synchronization signals; The low-power synchronization signal is detected according to the first sequence; Wherein, each Orthogonal Frequency Division Multiplexing (OFDM) symbol carries 4 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0 1 0]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 1 0 1 0 1 0 1 0]； [1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 0 1 1 0 0 1 1 0]； [1 0 0 1 0 1 0 1 0 1 1 0 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 0 1 0 1 1 0]； [1 0 0 1 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 0 1 1 0]； [1 0 0 1 0 1 1 0 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 0]； [1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 0 1 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 0 1 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0]； [1 0 1 0 0 1 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 0 1 1 0 0 1 1 0 1 0 1 0]； [1 0 1 0 0 1 1 0 1 0 0 1 0 1 0 1]； [1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1 0 1 1 0]； [1 0 1 0 1 0 0 1 1 0 0 1 1 0 1 0]； [1 0 1 0 1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 1 0 1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 2 bits M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1 0 1 1 0 0 1]； [1 0 0 1 1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0 0 1 0 1]； [1 0 0 1 1 0 1 0 1 0 0 1]； [1 0 1 0 0 1 0 1 1 0 0 1]； [1 0 1 0 0 1 1 0 0 1 0 1]； [1 0 1 0 1 0 0 1 1 0 0 1]； Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 0 1 0 1 1]； [1 0 0 0 1 1 0 1]； [1 0 0 1 0 1 0 1]； [1 0 0 1 1 0 1 0]； [1 0 1 0 0 0 1 1]； [1 0 1 0 0 1 1 0]； [1 0 1 0 1 0 0 1]； [1 0 1 0 1 1 0 0]； [1 0 1 1 0 0 0 1]； [1 1 0 0 0 1 0 1]； [1 1 0 0 1 0 1 0]； [1 1 0 1 0 0 0 1]； [1 0 1 0 1 0 1 0]； [1 0 1 0 0 1 0 1]； Alternatively, each OFDM symbol carries 1 bit M, and the first sequence is one of the following sequences, or, the first sequence is an equivalent sequence of one of the following sequences: [1 0 0 1 0 1]； [1 0 1 0 0 1]。 48. A communication device, characterized in that, It includes units or modules for performing the method as described in any one of claims 1, 3-30, or the method as described in claims 31 or 33, or the method as described in claims 34 or 36, or the method as described in claims 37 or 39, or the method as described in claims 40 or 42, or the method as described in claims 43 or 45, or the method as described in claims 26; or, it includes units or modules for performing the method as described in any one of claims 2-30, or the method as described in claims 32 or 33, or the method as described in claims 35 or 36, or the method as described in claims 38 or 39, or the method as described in claims 41 or 42, or the method as described in claims 44 or 45, or the method as described in claims 47.

49. A communication device, characterized in that, The method includes a processor and a memory, the memory being used to store program instructions, the processor, when executing the program instructions, causing the method of any one of claims 1, 3-30, or the method of claim 31 or 33, or the method of claim 34 or 36, or the method of claim 37 or 39, or the method of claim 40 or 42, or the method of claim 43 or 45, or the method of claim 26 to be executed, or the method of any one of claims 2-30, or the method of claim 32 or 33, or the method of claim 35 or 36, or the method of claim 38 or 39, or the method of claim 41 or 42, or the method of claim 44 or 45, or the method of claim 47 to be executed.

50. A computer-readable storage medium, characterized in that, The computer storage medium stores computer-readable instructions that, when executed on a communication device, cause the method as described in any one of claims 1, 3-30 to be performed, or the method as described in any one of claims 2-30 to be performed, or the method as described in claim 31 or 33 to be performed, or the method as described in claim 32 or 33 to be performed, or the method as described in claim 34 or 36 to be performed, or the method as described in claim 35 or 36 to be performed, or the method as described in claim 37 or 39 to be performed, or the method as described in claim 38 or 39 to be performed, or the method as described in claim 40 or 42 to be performed, or the method as described in claim 41 or 42 to be performed, or the method as described in claim 43 or 45 to be performed, or the method as described in claim 44 or 45 to be performed, or the method as described in claim 46 to be performed, or the method as described in claim 47 to be performed.

51. A computer program product, characterized in that, When the computer program product is run on the device, the method as described in any one of claims 1, 3-30 is performed, or the method as described in any one of claims 2-30 is performed, or the method as described in claim 31 or 33 is performed, or the method as described in claim 32 or 33 is performed, or the method as described in claim 34 or 36 is performed, or the method as described in claim 35 or 36 is performed, or the method as described in claim 37 or 39 is performed, or the method as described in claim 38 or 39 is performed, or the method as described in claim 40 or 42 is performed, or the method as described in claim 41 or 42 is performed, or the method as described in claim 23 or 25, or the method as described in claim 24 or 25, or the method as described in claim 26, or the method as described in claim 27.

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