摘要
为解决无线传感器网络能量受限问题,提出一种节点自适应的睡眠调度算法NASS(Node Adaptive Sleep Schedule)。当网络中有节点的死亡或者离开时,为了节约能量,其邻居节点应该根据通信节点的数目的减少而自动增加睡眠时间。在LEACH协议的分簇方法基础上,通过调整数据融合窗口来增加簇头节点的睡眠时间,从而达到了节约能量和提高整个网络生存周期的目的。实测结果表明,此算法在网络节点减少的条件下有效的提高了网络生存周期。
A node adaptive sleep schedule （NASS） algorithm is presented in order to solve the problem of limited energy of wireless sensor networks. When there are several nodes leaving or dying, their neighbor nodes should increase sleep time automatically according to the number of communication nodes in order to save energy. This algorithm which is based on the method of clustering, increases cluster head＇s sleep time by adapting the data fusion window achieves the goal of saving energy and improve the whole network＇s lifetime. The results measured practically shows that this algorithm can improve the lifetime of wireless sensor networks effectively under the circumstance that nodes decrease.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第10期1755-1759,共5页
Chinese Journal of Sensors and Actuators
基金
国家高技术发展研究计划资助(国家863计划)
CIMS主题基金资助(2003AA412030-9)
辽宁省科技基金资助(2003220002)
