Low cost time synchronization approach for Wireless Sensor Network

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (6): 99-101.

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Low cost time synchronization approach for Wireless Sensor Network

DENG Yaping，WANG Xu

College of Computer Science and Technology，Chongqing University of Posts and Telecommunications，Chongqing 400065，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-02-21 Published:2011-02-21

低功耗无线传感器网络时间同步方法

邓亚平，王旭

重庆邮电大学计算机科学与技术学院，重庆 400065

Abstract

Abstract: Comprehensive　considering　of the time synchronization error sources in Wireless Sensor Network（WSN），to solve the problem of huge message cost in most time synchronization methods，the approach which is based on one-time message exchanging is proposed.The approach maintains the synchronization precision through the time drift compensation computed by the cluster head after the onetime pair-synchronization between the cluster head and the members.The simulation results show that the approach performances well on the message cost and synchronization precision.

Key words: Wireless Sensor Network, time synchronization, frequency deviation, synchronization precision, message cost

摘要： 综合考虑了无线传感器网络中时间同步过程中时间误差的来源，为了解决一般同步方法中普遍存在的信息开销量大的问题，提出了一种基于一次信息交换，通过簇头对各节点进行时间补偿来维持整个簇内节点同步的方法。该方法在簇头与各簇内节点进行一次成对同步之后，通过簇头对各节点时间偏差进行有效估计后进行补偿来维持同步时间精度。通过仿真实验，该方法在信息开销和同步精度上具有良好的性能。

关键词: 无线传感器网络, 时间同步, 频偏, 同步精度, 信息开销

DENG Yaping，WANG Xu. Low cost time synchronization approach for Wireless Sensor Network[J]. Computer Engineering and Applications, 2011, 47(6): 99-101.

邓亚平，王旭. 低功耗无线传感器网络时间同步方法[J]. 计算机工程与应用, 2011, 47(6): 99-101.

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Low cost time synchronization approach for Wireless Sensor Network

低功耗无线传感器网络时间同步方法

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