Abstract:

Clock synchronization is a basic requirement for many network applications. In this paper, a distributed multi-host clock synchronization system based on ring topology is designed and implemented. In the proposed system, the Altair ＆ Vega method oriented to one-way delay measurement is adopted to realize the synchronization between multiple hosts, and the dynamic logic ring topology approach and the accumulated synchronous errors on the ring topology are employed to improve the system accuracy. Thus, a high-precision correcting method of relative clock skew is proposed. Test results indicate that the synchronization precision of the proposed method can be controlled in millisecond scale due to the accumulated error revision.

Key words: clock synchronization, ring topology, one-way delay, relative clock offset