Clock Synchronization of Wireless Distributed System Based on IEEE 1588

Abstract

Advanced clock synchronization is a basic requirement of significant importance for the wireless distributed system (WDS). IEEE 1588 standard defines a high precision clock synchronization protocol in measurement and control systems. In this paper, an excellent time synchronization scheme for WDS based on the IEEE 1588 standard is proposed. The application of IEEE 1588 on wireless distributed system is analyzed with emphasis on PTP synchronization accuracy influenced by topology choice and domain division. The two typical wireless network topologies, i.e. single-level star structure and multi-level tree structure, are employed in the scheme. Matlab simulations are carried out to evaluate the synchronization accuracy of the synchronization scheme for both network topologies. In addition, the PTP clock synchronization accuracy is researched on different access mechanism through simulations.