Synchronization method and apparatus
A technology for synchronizing sequences and sequences, applied in the field of communication, can solve the problem of inability to meet the needs of time synchronization, and achieve the effect of frequency synchronization
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[0114] According to the solution in the background art, if user equipment (UE) is synchronized according to the above-mentioned downlink synchronization signal sent by the base station, the time synchronization requirement between two UEs in the IoV system cannot be met.
[0115] In the communication technology of the 802.11 series, a preamble sequence consisting of 12 identical short sequences and 2 long sequences is transmitted at the beginning of each data transmission for automatic gain control (AGC), time-frequency Synchronization and channel estimation. The total time-domain length of the 12 short sequences is 3 Orthogonal Frequency Division Multiplexing (OFDM) symbols without Cyclic Prefix (CP), and the total time-domain length of the 2 long sequences is 2 OFDM symbols without CP.
[0116] However, the communication technology of the 802.11 series is based on the communication technology of the asynchronous system, and each transmission needs to perform time-frequency ...
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