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Computer Engineering ›› 2011, Vol. 37 ›› Issue (22): 70-73. doi: 10.3969/j.issn.1000-3428.2011.22.020

• Networks and Communications • Previous Articles     Next Articles

Survey on Time Synchronization in Wireless Sensor Network

WANG Fu-qiang 1,2,3, ZENG Peng 1, ZHANG Xiao-ling 1,2, LIANG Wei 1, YU Hai-bin 1   

  1. (1. Key Laboratory of Industrial Informatics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; 3. Shandong Computer Science Center, Jinan 250014, China)
  • Received:2011-05-16 Online:2011-11-18 Published:2011-11-20

无线传感器网络时间同步综述

汪付强 1,2,3,曾 鹏 1,张晓玲 1,2,梁 炜 1,于海斌 1   

  1. (1. 中国科学院沈阳自动化研究所工业信息学重点实验室,沈阳 110016; 2. 中国科学院研究生院,北京 100049;3. 山东省计算中心,济南 250014)
  • 作者简介:作者简介:汪付强(1980-),男,博士研究生,主研方向:无线传感器网络;曾 鹏,研究员;张晓玲,博士研究生;梁 炜,副研究员;于海斌,研究员
  • 基金资助:
    国家自然科学基金资助项目(60804067);国家杰出青年 基金资助项目(60725312)

Abstract: Many applications of Wireless Sensor Network(WSN) need clock of sensors nodes to be synchronized, but the traditional synchronization methods is unsuitable for WSN. This paper presents the problems faced when designing the time synchronization protocol. It reviews the existing clock synchronization protocols for WSN and the methods of estimating clock offset and clock drift in the most representative clock synchronization protocols for WSN. The future directions of research on time synchronization for WSN are forecasted.

Key words: Wireless Sensor Network(WSN), time synchronization, time stamp, synchronization precision, clock drift

摘要: 无线传感器在网络应用时要求传感器节点保持时间同步,但传统的时间同步方法并不适用于无线传感器网络。为此,指出设计时间同步协议所面临的问题,对现有无线传感器网络时间同步算法进行总结,分析典型算法对时钟偏差和时钟漂移的处理,并给出进一步的研究方向。

关键词: 无线传感器网络, 时间同步, 时间戳, 同步精度, 时钟漂移

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