无线传感器网络中基于概率触发的负载均衡拓扑控制算法.pdf

第21 卷 第5 期 传 感 技 术 学 报 V ol. 21 No. 5 2008 年5 月 CHINESE JOURNAL OF SENSORS AND A CTUAT ORS MAY. 2008 LoadBalancing Topology Control Arithmetic Based on * Probability Triggering in Wireless Sensor Network * H AOX iaochen, CH EN Bai, S UN Chao, LI UBin ( College of Electrical Engineering , Yanshan University, H ebei inhuangdao 066004, China) Abstract:In multihop wireless sensor networks, the energy of some sensors which take on forwarding data is used up rapidly, so the lifetime span of networks is shortened. onsidered that the load of sensor is heavy when it forwards data, integrated weight which is constructed by leaving energy and transmitting power is used to decide whether sensor forwards data or not. And a topology maintenance probability is de signed to adjust local network topology periodically. Thus a new type of loadbalancing topology control a rithmetic is presented based on probability. The problem that sensors died ahead of schedule because of forwarding data is solved effectively. The load of sensors is balanced to some extent. T he lifetime span of networks is prolonged. Key words:wireless sensor network; topology control; probability triggering; loadbalancing ACC:6150P * 郝晓辰, 陈 白, 孙 超, 刘 彬* ( , 066004) :, , , ,, , , , :; ;; :TP393 :A 2008 ( wireless sensor network, WSN) , [ 1] , ( RA, range assign , ment) [4] , , NP , , , Rodoplu [ 2] [ 3] ,WSN