无线传感器网络中保证覆盖的最少节点部署  

Coverage-preserved Minimum Deployment in Wireless Sensor Networks

作　　者：温俊[1] 窦强[1] 蒋杰[1] 宋磊[1,2] 窦文华[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073 [2]解放军理工大学指挥自动化学院,江苏南京210007

出　　处：《国防科技大学学报》2009年第3期76-81,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(60603061;60603064)

摘　　要：无线传感器网络的能量消耗是空间不均匀的，但当前多数的部署方法考虑得较少，网络的能量利用率低，因此提出了保证覆盖率和网络生存期的最少节点部署问题。基于传感器网络的数据传输特性，从提高能量效率和降低剩余能量的角度提出了节点数递减的重叠放置方法和节点密度递减的随机部署方法。两种新部署方法比已有部署方法需要的节点数少，剩余能量低，因而提高了能量利用率。最后，仿真实验表明，两种新部署策略的能量效率是已有方法的3～4倍。Most sensor deployrnents so far scarcely consider the non-uniform energy consumption in wireless sensor networks. As a result, considerable encrgy is wasted and energy utilization is low when networks fail. Therefore minimum nodes deployment problem is raised, which is subject to coverage and networking lifetime threshold. Motivated by delivery characteristics in wireless sensor networks, two solutions, nodes decreasing placement and density decreasing deployment, are presented, aiming at high energy utilization and minimum residual energy. Compared with the existing deployments, the two novel schemes deploy less sensor nodes, maintain less energy when nodes fail. Simulations reveal that energy efficiency of two schemes nearly re, aches 3 - 4 times of the existing solutions.

关 键 词：无线传感器网络 覆盖 均匀部署 递减部署 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]