基于P2P透明时钟的环形网络时钟同步方法  

Clock synchronization method in ring network based on P2P transparent clock

作　　者：严思哲 龚龙庆[1] 刘露 徐丹妮[1] YAN Si-zhe;GONG Long-qing;LIU lu;XV Dan-ni(Xian Microelectronics Technology Institute,Xian 710054,China)

机构地区：[1]西安微电子技术研究所,陕西西安710054

出　　处：《微电子学与计算机》2020年第10期69-74,共6页Microelectronics & Computer

摘　　要：由于非对称网络的特殊性,在运用1588v2协议进行时钟同步时存在困难.本文剖析了协议难以兼容的非对称网络的原因,重点分析了1588v2在非对称环形网络下的使用缺陷,并对协议原算法进行了仿真模拟.本文在避免使用delayAsymmetry修正值的基础上,设计了一套基于P2P透明时钟的非对称环网同步算法,并进行了实验验证.实验结果表明,该算法提高了同步精度,使1588v2协议更好地适用于环形网络.Due to the particularity of the asymmetric network structure,there are difficulties in using the protocol for clock synchronization.This article analyzes the reason why the protocol is difficult to be compatible with asymmetric network.It focuses on the defects of using 1588 v2 in the asymmetric ring network and gives simulations of original algorithm based on the protocol.Thus,a set of P2 P transparent clock-based clock synchronization algorithms for asymmetric ring network is designed on the basis of avoiding the use of delayAsymmetry correction values.Experimental results show that the algorithm improves the synchronization accuracy and makes the 1588 v2 protocol better applicable to ring networks.

关 键 词：时钟同步 IEEE1588v2 delayAsymmetry 环网 

分 类 号：TN915.04[电子电信—通信与信息系统]