IEEE 1588 and a Dynamic Delay Correction Clock Synchronization Algorithm

In this paper, the authors deeply studied PTP protocol, focusing on the research of clock offset and path delay in the clock synchronization process. The authors optimized the path asymmetry of PTP transmission which is not considered in the IEEE1588 protocol, and proposed a dynamic delay correction algorithm. In the experiment, the improved algorithm is verified convergent, which proves the rationality and effectiveness of the optimization. The result is that clock synchronization accuracy improved from tens or hundreds of $\mu s$ by original PTP, to tens of ns by improved algorithm. According to overseas and domestic research status, this algorithm has significantly improved time accuracy to satisfy practical requirements.