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| 无线传感器网络基于概率分发的时间同步协议 | |
| 引用本文： | 李连,孙利民,樊孝忠.无线传感器网络基于概率分发的时间同步协议[J].北京邮电大学学报,2008,31(5):57-60. |
| 作者姓名： | 李连 孙利民 樊孝忠 |
| 作者单位： | 北京理工大学,计算机科学与技术系,北京100084;海军航空工程学院控制工程系,烟台264001;中国科学院软件研究所,北京,100190;北京理工大学,计算机科学与技术系,北京100084 |
| 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： | 针对移动传感器网络中的网络特性，提出了一种基于概率分发的时间同步协议. 该协议中已同步节点根据自身的当前状态，以动态变化的概率发送同步信息对其他节点进行同步，在保证网络同步信息充足的前提下，大幅降低了同步信息的冗余度. 该协议不需要建立网络的层次拓扑结构，节点之间只需要进行一次通信即可实现同步，能够满足移动传感器网络的时间同步需求. |
| 关 键 词： | 移动传感器网络 时间同步 概率分发 时间源级别 |
| 收稿时间： | 2007-12-16 |
Probability Distribution Based Time Synchronization Protocol for Wireless Sensor Networks |
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| LI Lian,SUN Li-min,FAN Xiao-zhong.Probability Distribution Based Time Synchronization Protocol for Wireless Sensor Networks[J].Journal of Beijing University of Posts and Telecommunications,2008,31(5):57-60. | |
| Authors: | LI Lian SUN Li-min FAN Xiao-zhong |
| Affiliation: | 1. Department of Computer Science and Technology, Beijing Institute of Technology, Beijing 100084, China; 2. Department of Control Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China； 3. Institute of Software, the Chinese Academy of Sciences, Beijing 100080 China ) |
| Abstract: | Taking the dynamic topology characteristic of mobile sensor networks into account, a probability distribution-based time synchronization protocol (PDTS) is proposed. In PDTS, synchronized nodes send out synchronization messages with self-adaptive probability according to their current states to synchronize other nodes. By this means, the sufficiency of synchronization messages is guaranteed and the redundancy in the networks is reduced remarkably. Additionally, there is no need to establish network hierarchy and merely one communication is required to synchronize a pair of nodes in PDTS. Due to the before-mentioned advantages, PDTS can be applied to mobile sensor networks effectively. |
| Keywords: | mobile sensor networks time synchronization probability distribution time level |
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