Method of coverage-preserving nodes scheduling in clusters for wireless sensor networks
Xu Bao, Yongfeng Ju · Computer Engineering and Applications Journal · 2011
In order to prolong the lifetime of Wireless Sensor Networks(WSNs),and improve the use efficiency of node energy,combined cluster and node scheduling,a coverage-preserving nodes scheduling method in clusters for WSNs(CPNSC) is proposed in this paper.In this method,clusters are set up at first,then every node in every cluster judges itself whether a redundant node or not according to follow conditionsthe first one,it has more than 3 neighbor nodes whose distance to itself are less than nodes'same monitor radius R;the other one,it can be circle covered by the neighbor nodes satisfying condition above.Simulations in Matlab 7.1 indicate that,for one thing,this method can decrease the energy consumption of WSNs,for another thing,the schedule efficiency has an affinity with node density and node monitor radius.