Power efficient scheme for self localization in wireless sensor networks

作     者：Allon Rai Sangita Ale Syed S. Rizvi Aasia Riasat 

作者机构：Computer Science and Engineering Department University of Bridgeport Bridgeport 06604 USA Computer Science Department Institute of Business Management Karachi 78100 Pakistan 

出 版 物：《通讯和计算机（中英文版）》 (Journal of Communication and Computer)

年 卷 期：2009年第6卷第10期

页      面：37-43,53页

学科分类：080202[工学-机械电子工程] 08[工学] 0802[工学-机械工程] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：无线传感器网络 网络定位 传感器节点 节点位置 省电 本地化 仿真结果 控制权 

摘      要：With the tremendous applications of the wireless sensor network, self-localization has become one of the challenging subject matter that has gained attention of many researchers in the field of wireless sensor network. Localization is the process of assigning or computing the location of the sensor nodes in a sensor network. As the sensor nodes are deployed randomly, we do not have any knowledge about their location in advance. As a result, this becomes very important that they localize themselves as manual deployment of sensor node is not feasible. Also, in WSN the main problem is the power as the sensor nodes have very limited power source. This paper provides a novel solution for localizing the sensor nodes using controlled power of the beacon nodes such that we will have longer life of the beacon nodes which plays a vital role in the process of localization as it is the only special nodes that has the information about its location when they are deployed such that the remaining ordinary nodes can localize themselves in accordance with these beacon node. We develop a novel model that first finds the distance of the sensor nodes then it finds the location of the unknown sensor nodes in power efficient manner. Our simulation results show the effectiveness of the proposed methodology in terms of controlled and reduced power.