基于多移动节点的高效数据收集协议  

Energy-efficient data collection protocol based on multiple mobile nodes

作　　者：梁青 上官艺伟 张文飞 焦峰 LIANG Qing, SHANGGUAN Yiwei, ZHANG Wenfei, JIAO Feng(Department of Electronic Engineering, Xi＇an University of Posts and Telecommunications, Xi＇ an 710121, China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710021

出　　处：《西安邮电大学学报》2018年第1期14-20,共7页Journal of Xi’an University of Posts and Telecommunications

基　　金：国家自然科学基金资助项目(61202490);陕西省自然科学基础研究计划资助项目(2014JM2-6117)

摘　　要：为延长无线传感器网络的生存周期,给出一种基于多移动节点的高效数据收集协议。划分网络为面积相等的若干子域,将传感器节点依其地理位置信息加入相应子域。根据节点的死亡率和节点间的位置关系,移动节点自适应地移动至受控区域的空洞处。网络采用分簇机制,固定汇点和移动汇点并存。移动汇点的轨迹和运动状态由传感器的覆盖率决定,簇头收集簇内的兴趣事件并发送至距离自己跳数最小的汇点。在600 m×600m区域内随机播撒400个节点,结果显示,与低功耗自适应集簇分层型协议相比较,所给协议的网络剩余节点可增加21.25%,网络剩余能量可提升16.42%,获取信息量可提高20.8%。In order to prolong the survival period of wireless sensor networks,an efficient data collection protocol based on multiple mobile nodes is proposed.The network is divided into a number of grids with equal area,and the sensor nodes are added to the corresponding ones according to their geographical position information.While,according to the mortality of sensors and their location relationship in each grid,the mobile nodes move adaptively to the energy hole in the region under controll.By clustering mechanism,static sinks and mobile sinks coexist in the network.The track and the moving state of the mobile sinks are determined by the coverage rate of the sensors,and the cluster heads collect the interest events in the cluster and sends these data out to the nearest sink.400 sensor nodes are sown in a region of 600 m×600 m,the simulation results show that,compared with the low power adaptive cluster hierarchical protocol,the network residual nodes of the proposed protocol can be increased by 21.25%,the network residual energy can be increased by 16.42%and the information gain can be increased by 16.42%.

关 键 词：无线传感器网络 移动节点 汇点 分簇机制 网络空洞 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]