Abstract:

Because the current NTP(Network Time Protocol) clock synchronization algorithm can not meet the new networks demands of high synchronization precision, an improved algorithm of NTP based on DS（Dempster/Shafer） theory is proposed. Firstly the current shortage of NTP clock synchronization is analyzed; then based on DS evidence theory, an improved NTP clock synchronization algorithm is established; at last a simulation test is done, and results show that the improved algorithm can enhance the synchronization precision.

Key words: clock synchronization, network time protocol（NTP）, DS evidence theory, synchronization precision