Journal of Software:2012.23(zk1):1-8

(重庆通信学院 电力工程系,重庆 400035;重庆第二师范学院 数学与信息工程系,重庆 400067)
Localization in Wireless Sensor Network with Heuristic Mobile Beacons
(Department of Power Engineering, Chongqing Communication College, Chongqing 400035, China;Department of Mathematics and Information Engineering, Chongqing University of Education, Chongqing 400067, China)
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Received:May 05, 2012    Revised:August 17, 2012
> 中文摘要: 在基于移动信标的无线传感器网络节点定位过程中,信标的移动路径对定位性能有着重要的影响.但现有的信标移动路径规划方法没有充分考虑未知节点的密度及分布的影响,计算复杂且定位效率较低.首先根据等距三重优化覆盖提出了信标模型,再针对未知节点随机分布且密度有限的ROI(region of interest),提出了一种启发式信标移动规划方法,并利用RSSI(received signal strength indicator)和range-free 相结合的定位机制对节点进行定位.仿真实验结果表明,该算法可以对传感器节点进行高效、高精度的定位.
Abstract:Moving the path of the beacon has an important impact on the localization performance in a wireless sensor network with mobile beacons; however, without full consideration of the influences of the distribution and density unknown nodes’ when planning beacon’s moving path, most of existing localization methods have lower efficiency. In this paper, the beacon model is first presented according to the theory of equal distance 3-optimal-coverage. Next, a heuristic path planning method is proposed for the ROI in which unknown nodes are distributed randomly, and the node density is limited by using the location mechanism of RSSI to locate range-free, unknown nodes. Simulation results show that the given method is effective.
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基金项目:重庆市教委自然科学基金(KJ121506) 重庆市教委自然科学基金(KJ121506)
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WEN Wu-Song,WANG Lu.Localization in Wireless Sensor Network with Heuristic Mobile Beacons.Journal of Software,2012,23(zk1):1-8