一种改进的无线传感器网络密度自适应冗余节点调度算法

An Improved Density-Adaptive Redundant Node Scheduling Algorithm for Wireless Sensor Networks

节点休眠调度算法是无线传感器网络降低能耗、延长网络生存时间的有效手段。Ditian算法是节点休眠调度算法的一种。针对Ditian算法在节点低密度状态下存在的不足,提出一种改进的密度自适应冗余节点调度算法,通过对网络中节点密度的监测,自适应地调整节点休眠调度策略。仿真结果表明,改进后的算法能有效减少系统中的活跃节点数,延长系统寿命。

Node sleep scheduling algorithm is an effective means to reduce energy consumption and extend network life time in wireless sensor networks.The Ditian algorithm is a type of node sleep scheduling algorithm.Aiming at the shortcomings of Ditian algorithm under the condition of low node density,an improved density-adaptive redundant node scheduling algorithm was proposed.By monitoring the node density in the network,the node sleep scheduling strategy could be adjusted adaptively.Simulation results show that the improved algorithm can effectively reduce the number of active nodes in the system and prolong the system life.