Research on Time Synchronization System of Wireless Network

With the rapid development of wireless network, the requirement of time accuracy has become higher for every node in network. Thus, the high precision time synchronization is an important condition to ensure the high-quality service of wireless network. In order to meet the requirement of time synchronization, the research of wireless timing technology has drawn the attention. In the time synchronization system based on wireless network, due to the flexibility and convenience in different scenarios, the timing protocol can be widely used in different scenarios. However, the inherent shortcomings of wireless systems such as multipath interference also limits the further improvement of time synchronization performance. Therefore, this paper proposes an enhanced timestamp algorithm and its implementation scheme to solve the problem of the time synchronization system's accuracy in the wireless network. The proposed scheme can estimate the timestamp of physical layer in the time synchronization protocol through the synchronization sequence in the wireless system, and improve the sampling accuracy of the timestamp through the iterative algorithm based on the correlation window. Finally, according to the experimental results, this paper shows the performance of the enhanced algorithm and the traditional method, which can prove the proposed algorithm can solve the inherent problems of wireless channel and improve the accuracy of timestamp effectively.