TSN网络中时钟同步可靠性提升方法

doi:10.13190/j.jbupt.2020-129

北京邮电大学学报 ›› 2021, Vol. 44 ›› Issue (2): 20-25,46.doi: 10.13190/j.jbupt.2020-129

• 未来网络体系架构和关键技术专题 • 上一篇下一篇

TSN网络中时钟同步可靠性提升方法

朱海龙^1,2, 严园园²

1. 北京邮电大学网络与交换技术国家重点实验室, 北京 100876;
2. 网络通信与安全紫金山实验室, 南京 211100

收稿日期:2020-08-20 出版日期:2021-04-28 发布日期:2021-04-28
通讯作者: 严园园(1989-),男,工程师,E-mail:yanyuanyuan@pmlabs.com.cn. E-mail:yanyuanyuan@pmlabs.com.cn
作者简介:朱海龙(1987-),男,讲师.
基金资助:
国家重点研发计划项目（2020YFB1805301）

Measures of Reliability Improvement of Clock Synchronization in Time Sensitive Networking

ZHU Hai-long^1,2, YAN Yuan-yuan²

1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2. Purple Mountain Laboratories, Nanjing 211100, China

Received:2020-08-20 Online:2021-04-28 Published:2021-04-28

摘要/Abstract

摘要： 为了提高时间敏感网络中时钟同步的可靠性，在IEEE 802.1AS协议的基础上，提出最近端口主时钟备份和主时钟相位偏移热备冗余的方法.仿真实验结果表明，最近端口主时钟备份方法比标准的主时钟重选方法的可靠性提高了38%，主时钟相位偏移热备冗余比标准的热备冗余方法在精度上可提升48%.

关键词: 时钟同步, 冗余, 相位, 最近端, 重选

Abstract: In order to improve the reliability of clock synchronization, based on the IEEE 802.1AS protocol, a method for the nearest port master clock backup and the master clock phase offset hot backup redundancy method is proposed. Simulation shows that the recent port master clock backup method is 38% more reliable than the standard master clock reselection method, and the master clock phase offset hot backup redundancy is 48% more accurate than the standard hot backup redundancy method.

Key words: clock synchronization, redundancy, phase, nearest port, reselection

中图分类号:

TP393.0

朱海龙, 严园园. TSN网络中时钟同步可靠性提升方法[J]. 北京邮电大学学报, 2021, 44(2): 20-25,46.

ZHU Hai-long, YAN Yuan-yuan. Measures of Reliability Improvement of Clock Synchronization in Time Sensitive Networking[J]. Journal of Beijing University of Posts and Telecommunications, 2021, 44(2): 20-25,46.

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TSN网络中时钟同步可靠性提升方法

Measures of Reliability Improvement of Clock Synchronization in Time Sensitive Networking

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