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无线传感器网络覆盖连通性研究.doc

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无线传感器网络覆盖连通性研究.doc
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2009 年 2 月 Journal on Communications February 2009第 30 卷第 2 期 通 信 学 报 Vol.30 No.2无线传感器网络覆盖连通性研究黄晓 1,3,程宏兵 1,2,杨庚 1(1. 南京邮电大学 计算机学院,江苏 南京 210003;2. 江苏城市职业学院 信息工程系,江苏 南京 210017;3. 江苏移动南京分公司,江苏 南京 210003)摘 要:针对无线传感器网络部署区域由于通信障碍和其他一些因素产生的某些节点无法与网络通信的情况,给出了一种使用节点代理解决监测区域内节点通信不可达的方案,并基于一般意义的网络系统模型提出了一种探测覆盖区域内节点连通性的算法,即基于深度探测的节点覆盖连通性判定算法 DBDAFNCJ。节点连通性分析和仿真实验结果表明,节点代理方案可以很好改善节点部署区域内节点通信不可达的情况,同时表明DBDAFNCJ 算法可以高效、准确地获悉部署区域内节点连通性的情况。关键词:无线传感器网络;覆盖连通性;节点代理中图分类号:TP393 文献标识码:A 文章编号:1000-436X(2009)02-0129-07Research of connectivity for wireless sensor networksHUANG Xiao 1,3 , CHENG Hong-bing 1,2 ,YANG Geng1(1. College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;2. Department of Information Engineering, College of Jiangsu Civil Vocation, Nanjing 210017, China; 3. Nanjing Branch, Limited Company of Jiangsu Mobile, Nanjing 210003, China)Abstract: It was crucial to acquire the knowledge of nodes connectivity before management, application and research of wireless sensor networks when they had been deployed in the interest randomly. Under real environment there can be some nodes called unreachable node in interest, which could not communicate with base station for some reason, for example there are some nodes lie out of the radio range of base station or the interest range. A scheme to make those unreachable nodes be able to communicate with base station was proposed. At the same time, a judgment algorithm for nodes connectivity based on a normal wireless sensor networks model was proposed. In simulation two-experiment scheme to test the proposed scheme and judgment algorithm were set. From the results of simulation conclude that the proposed scheme can improve nodes’ connectivity in the interest and the proposed algorithm can judge the connectivity efficiently and accurately. Key words: wireless sensor networks; coverage connectivity; node agent 1 引言集成传感器技术、微机电系统(MEMS)技术、无线通信技术和分布式信息处理技术的无线传感器网络(WSN, wireless sensor network
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