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移动传感器网络的一种基于自适应扩散的时间同步协议

A self-adaptive diffusion based time synchronization protocol for mobile sensor networks
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摘要 针对移动传感器网络中网络拓扑动态变化和通信链路不稳定的特性,提出了一种基于自适应扩散的时间同步协议(SDTS)。该协议分为被动同步和主动同步两种同步方式,被动同步方式下已同步节点根据自身和网络当前的状态,以自适应变化的概率发布时间同步信息,未同步节点与同步信息的发布者实现同步;主动同步方式下已同步节点停止发送同步信息,未同步节点通过发送同步请求信息的方式来实现同步。该协议能够很好地适应移动传感器网络的网络特性,在通信开销、同步收敛速度和鲁棒性方面具有较好的性能。 In view of the dynamic network topology and instable communication links in mobile sensor networks, a self-adaptive diffusion based time synchronization protocol （SDTS） is put forwarded in this paper. The SDTS has two synchronization phases, namely, the passive synchronization phase and the active synchronization phase. In the passive synchronization phase, synchronized nodes send out synchronization packets with self-adaptive probabilities, and non-synchronized nodes are synchronized to the sender of packets. In the active synchronization phase, synchronized nodes stop sending synchronization packets and non-synchronized nodes realize synchronization by sending out synchronization requisition messages. The SDTS adapts to mobile sensor networks well and possesses several significant merits, such as high energy efficiency, low synchronization delay and good robustness.
作者 李连 孙利民 刘燕
机构地区 北京理工大学计算机科学与技术系 海军航空工程学院控制工程系 中国科学院软件研究所 北京大学软件与微电子学院
出处 《高技术通讯》 EI CAS CSCD 北大核心 2009年第8期861-866,共6页 Chinese High Technology Letters
基金 863计划(2008AA01Z217 2006AA01Z218) 国家自然科学基金(60673178)资助项目
关键词 移动传感器网络 时间同步 自适应扩散 巴斯扩散模型(BDM) mobile sensor networks, time synchronization, self-adaptive diffusion, Bass diffusion model （BDM）
分类号 TP212.9 [自动化与计算机技术—检测技术与自动化装置] TN929.5 [电子电信—通信与信息系统]
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参考文献12

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二级参考文献39

  • 1徐朝农,赵磊,徐勇军,李晓维.无线传感器网络时间同步协议的改进策略[J].计算机学报,2007,30(4):514-523. 被引量：16
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高技术通讯
2009年 第8期

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