基于IEEE1588的高精度时间同步技术分析与性能测试  

Based on IEEE1588 High Precision Time Synchronization Technical Analysis and Performance Testing

作　　者：郑翊[1] ZHENG Yi(China Academy of Electronics an Information Technology,Beijing 100041,China)

机构地区：[1]中国电子科学研究院

出　　处：《中国电子科学研究院学报》2019年第6期605-610,共6页Journal of China Academy of Electronics and Information Technology

摘　　要：随着以太网数据传输技术的广泛应用,数据传输速率不断提升。传统的对时技术难以满足现代通信系统中实时传输的精度需求,网络业界提出了"精密时钟同步协议标准(IEEE1588)",该标准采用PTP(精密时钟同步)协议,可以实现亚微秒级别的传输精度。论文阐述了PTP协议原理,通过搭建测试平台测试了在不同网络包长度和不同传输数据率下的PTP性能,分析了非PTP设备对传输精度的影响,验证了PTP协议在实际网络传输系统中所能达到的精度,为采用PTP协议的对时机制研究提供了参考。With the extensive use of network transmission,the speed of data transmission increases continually. The traditional synchronization principles are hard to satisfy the synchronization precision requirements of advanced communication system,network organizations establish"IEEE standard for a precision clock synchronization protocol( IEEE1588)",this standard introduces PTP( Precision Time Protocol) which can make the precision of transmission to achieve the grade of microsecond.This paper expatiates the principle of PTP and this paper tests the PTP performance on different network packet length and different transmission speeds based on PTP testing platform,this paper also analyses the influence of transmission precision when using non-PTP devices and validating the precision of actual network transmission system by using PTP.The researching of time synchronization by using PTP could refer to this paper.

关 键 词：时间同步 IEEE1588标准 PTP协议 时间偏移 路径时延 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]