Aiming at problem that in wireless sensor networks（ WSNs）

too much frame synchronization overhead and low transmission efficiency

present a novel method of communication frame synchronization based on probability decoding. In this method

the frame synchronization is constructed by replacing the communication data with synchronization symbols before transmission. To prevent possible errors

symbols are introduced at known positions by communication data replacement. After completing the frame synchronization and obtaining the encoded data

the receiver can be used for decoding the initialization based on the replacement positions of the frame synchronization symbols. Probability decoding can then be performed. The simulation results illustrate that the new frame synchronization scheme greatly improves the transmission efficiency

with only a small deterioration in the error correction performance

thus validating our proposed method.