异构WSN中能耗偏差协调的分簇算法

Clustering algorithm based on coordinating deviation of energy consumption in heterogeneous wireless sensor network

针对异构无线传感器网络中的能量消耗不均匀,能量利用率偏低的问题,提出了基于能耗偏差协调的分簇算法(CDEC)。该算法充分利用网络异构性的特点,通过引入节点能耗偏差度β及其协调参数λ,对簇头选举的门限值及簇头轮换的条件进行实时调整,以达到均衡网络能耗、降低额外能耗的目的。仿真结果表明,CDEC分簇算法使得网络中能量的消耗更加均衡合理,显著延长了网络寿命,提高了网络的吞吐率。

In order to solve the common problem that energy consumption was always unbalanced and inefficiency in heterogeneous wireless sensor networks,this paper presented a novel clustering algorithm based on coordinating deviation of energy consumption.It could real-time adjust the cluster head selection threshold and the requirement of cluster head rotation by introducing β called deviation degree of node energy consumption and its adjustment parameter λ,so as to achieve better balance energy consumption and reduce the additional energy consumption.The simulation results show that the new algorithm achieves the better balance energy consumption and more energy efficiency of the network,then dramatically prolongs the network lifetime and improves the network throughput.