基于IEEE1588协议时钟同步精度影响因素的研究

Research on Influencing Factors of Clock Synchronization Precision Based on IEEE1588 Protocol

摘要:

随着分布式测试技术的快速发展,对地理位置分散的测试设备协同完成测试任务的需求也越来越大,而设备之间的时钟同步精度成为制约测试效果的关键因素；为了对时钟同步精度的影响因素进行研究,提出了基于IEEE1588协议的网络时钟同步实现方案;首先对IEEE1588基本原理进行分析,然后提出了IEEE1588协议的实现方案,最后搭建实验平台对影响同步精度的因素进行研究;研究结果表明,同步间隔和网络拓扑结构影响时钟同步精度的两个主要因素。

Abstract:

With the rapid development of distributed testing technology, demand of test equipment of geographically dispersed synergy test task is more and more large. Precision clock synchronization between devices, become the key factors to test results. In order to test and analyze the influence factors of clock synchronization accuracy, put forward the network clock synchronization scheme based on IEEE1588 protocol design method. This paper firstly analyzes the basic principle of IEEE1588, and then puts forward a scheme of realizing IEEE1588. Finally set up the experimental platform and analyze the factors affected the accuracy of synchronization. Test results show that the synchronization interval and network topology structure of two main factors affected the accuracy of clock synchronization.