电讯技术2016，Vol.56Issue(5)：538-543,6.DOI:10.3969/j.issn.1001-893x.2016.05.011
一种自动校时的IEEE 1588 v2精确时间同步算法
A Precise Time Synchronization Algorithm for IEEE 1558 v2 Based on Automatic Time Calibration
摘要
Abstract
To solve the problem of the imprecise time stamp and the increasing error in case of losing Sync messages in the time synchronization algorithm of IEEE 1558v2 single-step mode,an automatic calibration time synchronization algorithm ( ACTS ) is proposed. ACTS utilizes a novel compensation mechanism of time stamps to improve the synchronization accuracy,and automatically conducts error correction with the historical average value of offset when Sync messages are lost. Thus,the error of offset and delay resulted from losing Sync messages is reduced,and the synchronization error is decreased. Simulation results show that compared with IEEE 1588v2 single-step mode time synchronization algorithm,ACTS reduces the aver-age synchronization error by at least 90. 2% and 89% when Sync messages are or not lost,respectively. ACTS is useful and feasible for improving the synchronization accuracy of IEEE 1588v2 single-step mode.关键词
网络时间同步/误差校正/自动校时/历史均值Key words
network time synchronization/error correction/automatic time calibration/historical average values分类
信息技术与安全科学引用本文复制引用
黄盛,卓越,金鑫,文安,任智,武杨,黄希凯..一种自动校时的IEEE 1588 v2精确时间同步算法[J].电讯技术,2016,56(5):538-543,6.基金项目
国家自然科学基金资助项目(613719159) （613719159）
重庆市基础与前沿研究计划项目(cstc2015jcyjBX0085) （cstc2015jcyjBX0085）
新一代信息网络与终端协同创新中心协同攻关项目(N201501) （N201501）
南方电网科技项目(K-ZD2013-022) Foundation Item:The National Natural Science Foundation of China(No.613719159) （K-ZD2013-022）
The Basic and Frontier Research Project of Chongqing (cstc2015jcyjBX0085) （cstc2015jcyjBX0085）
The Collaborative Research Project of the Collaborative Innovation Center(Chongqing)of the New Generation Information Networks and Terminals ( N201501) （Chongqing）
The Technology Project of China Southern Power Grid ( K-ZD2013-022) （ K-ZD2013-022）
