LEACH-CS:一种自定义的WSN跨区多跳路由机制

LEACH-CS:A Customizable Zone-spanned Multi-hop Routing Protocol in WSNs

针对无线传感器网络中节点能量受限的特征,深入分析了经典的LEACH路由协议;针对其在能耗和适用规模方面存在的不足,提出了一种新型自定义的跨区多跳路由算法(LEACH-CS)。新算法引入了"区域"的概念,即某区域选举簇头失败时产生补充簇头,建立簇间路由时以跨区距离的约束来自定义合适的多跳路由方案。实验表明,与现有LEACH协议相比,新的协议明显提高了网络的生存时间,平衡了网络的节点能耗,均匀了死亡节点的分布,也扩大了协议适用的网络规模。

This paper,based on the existing LEACH routing algorithm,proposed a novel customizable zone-spanned multi-hop routing algorithm（LEACH-CS） for large-scale,energy limited wireless sensor networks.At first,we introduced the concept of ＂zone＂.On this basis,an additional cluster-head may be elected on demand during cluster-head selection process.The purpose is to optimize multi-hop routing with the constraint of multi-zone distance threshold.Our simulation experiment demonstrated that,compared with the existing LEACH protocol,the LEACH-CS could reduce the energy consumption of the cluster-heads significantly and extend the life-cycle of large-scale networks due to more uniformly distributed dead nodes.