| 一种低开销的无线传感器网络时间同步算法 |
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| 引用本文： | 俞家安,陈晓辉,王卫东.一种低开销的无线传感器网络时间同步算法[J].计算机仿真,2009,26(5). |
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| 作者姓名： | 俞家安 陈晓辉 王卫东 |
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| 作者单位： | 中国科学技术大学电子工程与信息科学系,安徽,合肥,230027 |
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| 摘 要： | 低开销是无线传感器网络时间同步算法的重要技术要求之一.为了降低同步过程中的通信开销,提出了一种基于部分广播的低开销无线传感器网络时间同步算法.算法基于TPSN算法的分层思想,利用节点的距离信息,选撵当层节点的部分相邻节点进行下一层的等级广播,从而有效地降低同步过程中的通信开销.分析了在不同的网络节点密度下广播信息包数与等级广播距离的关系,得到了不同网络节点密度下的最优等级广播距离.仿真结果表明,与TPSN算法相比,在相同的同步精度下,算法能显著地降低高密度无线传感器网络时间同步的开销.
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| 关 键 词： | 无线传感器网络 时间同步 低开销 |
A Low Overhead Time Synchronization Algorithm for Wireless Sensor Networks |
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| YU Jia-an,CHEN Xiao-hui,WANG Wei-dong.A Low Overhead Time Synchronization Algorithm for Wireless Sensor Networks[J].Computer Simulation,2009,26(5). |
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| Authors: | YU Jia-an CHEN Xiao-hui WANG Wei-dong |
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| Affiliation: | Department of Electronic Engineering and Information Science;University of Science and Technology of China;Hefei Anhui 230027;China |
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| Abstract: | Low overhead is an important requirement of time synchronization algorithm of wireless sensor networks.In this paper,a low overhead time synchronization algorithm is proposed for reducing communication overhead in synchronizing.This algorithm,which is based on the level discovery mechanism used in TPSN,only selects fractional nodes in the broadcasting area of the current level node as the next level broadcast initiate nodes.As a result,the overhead of time synchronization is reduced effectively.The selectio... |
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| Keywords: | Wireless sensor networks Time synchronization Low overhead |
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