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一个无线传感网络时间同步模拟器
引用本文:徐朝农,赵磊,徐勇军,李晓维.一个无线传感网络时间同步模拟器[J].自动化学报,2006,32(6):1008-1014.
作者姓名:徐朝农  赵磊  徐勇军  李晓维
作者单位:1.Advanced Test Technology Lab, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080;
基金项目:国家重点基础研究发展计划(973计划);国家自然科学基金
摘    要:Time synchronization is a critical middleware service of wireless sensor networks. Researchers have already proposed some time synchronization algorithms. However, due to the demands for various synchronization precision, existing time synchronization algorithms often need to be adapted. So it is necessary to evaluate these adapted algorithms before use. Software simulation is a valid and quick way to do it. In this paper, we present a time synchronization simulator, Simsync, for wireless sensor networks. We decompose the packet delay into 6 delay components and model them separately. The frequency of crystal oscillator is modeled as Gaussian. To testify its effectiveness, we simulate the reference broadcast synchronization algorithm (RBS) and the timing-sync synchronization algorithm (TPSN) on Simsync. Simulated results are also presented and analyzed.

关 键 词:Time  synchronization    sensor  networks    simulator
收稿时间:2005-12-21
修稿时间:2006-03-19

Simsync: A Time Synchronization Simulator for Sensor Networks
XU Chao-Nong,ZHAO Lei,XU Yong-Jun,LI Xiao-Wei.Simsync: A Time Synchronization Simulator for Sensor Networks[J].Acta Automatica Sinica,2006,32(6):1008-1014.
Authors:XU Chao-Nong  ZHAO Lei  XU Yong-Jun  LI Xiao-Wei
Affiliation:1.Advanced Test Technology Lab, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080Department of Computer Science, Hefei University of Technology, Hefei 230009Graduate School of Chinese Academy of Sciences, Beijing 100080
Abstract:Time synchronization is a critical middleware service of wireless sensor networks. Researchers have already proposed some time synchronization algorithms. However, due to the demands for various synchronization precision, existing time synchronization algorithms often need to be adapted. So it is necessary to evaluate these adapted algorithms before use. Software simulation is a valid and quick way to do it. In this paper, we present a time synchronization simulator, Simsync, for wireless sensor networks. We decompose the packet delay into 6 delay components and model them separately. The frequency of crystal oscillator is modeled as Gaussian. To testify its effectiveness, we simulate the reference broadcast synchronization algorithm (RBS) and the timing-sync synchronization algorithm (TPSN) on Simsync. Simulated results are also presented and analyzed.
Keywords:Time synchronization  sensor networks  simulator
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