无线传感器网络中基于区域通信覆盖的节点定位投放算法  

Coverage of Communication-Based Sensor Nodes Locating Deployed Algorithm in Wireless Sensor Networks

作　　者：高翔[1] 杨银堂[1] 柴常春[1] 周端[1] 

机构地区：[1]西安电子科技大学微电子学院宽禁带半导体教育部重点实验室,西安710071

出　　处：《电子与信息学报》2010年第7期1597-1601,共5页Journal of Electronics & Information Technology

基　　金：国家杰出青年基金(60725415);国家重点基础项目(B1420080204);国家自然科学基金(60606006)资助课题

摘　　要：针对无线传感器网络中传感器节点投放分布对投放区域有效通信信号覆盖的影响,该文提出了一种基于通信覆盖的分布式投放概率覆盖(DDCP)算法。在保证投放精度的前提下,该算法根据传感器节点在投放区域中位置的不确定性以及信号衰减特性,建立信号覆盖模型,并通过概率优化获取传感器节点的最佳投放位置和投放数目。这样改善了区域通信覆盖,同时提高了投放效率和节省网络资源。通过仿真比较了在不同定位投放方法下的各相关性数据,验证了该算法实现高效投放的优越性和正确性。To eliminate the affect of the distribution of deployed sensor nodes on the coverage of effective communication signals in deployed areas for wireless sensor networks,an algorithm of Distributed Deployment of Coverage Probability（DDCP） is proposed based on the effective communication coverage in this paper.Assuring the deployed precision,DDCP is used to not only consider the environmental influence for uncertainties of the deployed positions of sensor nodes and communication signal attenuation,but also create the model of signal coverage to attain the optimal deployed locations and the number of sensor nodes.These ameliorate communication coverage,improve the effective of the deployment and save the resources through probability optimization.Through the simulations of different locating deployed strategies,relative data proves the advantage and correctness of DDCP.

关 键 词：无线传感器网络 接收信号强度指示器 高斯分布 概率分布函数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]