无线传感器网络簇首备份机制研究

摘要

A cluster-head back-up mechanism based on the integrated index for WSN is proposed. With node' s residual energy, node degree and communicate price, an effective integrated index is constructed. It selects node with the best integrated index as the back-up cluster-head and maintains the continuous rotation between the cluster-head and backed-up cluster-head. The proposed method is implemented and the simulating results show that the clustering WSN with this kind of mechanism can reduce the losses caused by the malfunction of cluster-heads effectively, enhance the stability of the sub-clusters, extend the life cycle of the network and improve the overall performance of the network.%提出一种基于综合指标的无线传感器网络簇首备份机制.通过节点剩余能量、节点度数、通信代价三者构建一种有效的综合指标,通过对簇内成员节点的综合指标排序,选取具有最优综合指标值的成员节点作为备份簇首.对该备份机制的仿真结果表明,采用该机制的分簇无线传感器网络可有效地降低簇首故障所带来的损失,加强了分簇的稳定性,延长了网络的生命周期,提升了网络的整体性能.