Research on Time Synchronization of WIA-PA Industrial Wireless Networks

Firstly, the article introduces the WIA-PA wireless network which is under study at present and can be used for industrial control. Aiming to FTSP algorithm can be used correctly in this network, combined with the unique TDMA media access control method of this network, this article takes a way building the logic synchronization tree to improve the precision of multi-hop FTSP clock synchronization. Then it use Bayesian estimation to improve the accuracy of clock synchronization. The experiment results show that after the using of Bayesian estimation, the time synchronization precision of WIA-PA network improve clearly.