WSN中基于簇首重构的层次路由协议设计

Design of hierarchical routing protocol based on cluster reconstitution for wireless sensor network

为了有效均衡网络能耗,提升网络生命周期,提出了一种基于簇首重构的层次路由协议—HRP-CHR协议。对路由协议进行分析,指出能耗问题是设计过程中的难点。设计了非均匀层次结构的成簇方法,通过基站将网络空间划分为多个层次,各个层次是以基站为中心的同心圆,并且层次宽度由内向外依次增加,能够有效避免离基站较近的节点易形成能量空洞的缺陷。同时还为网络中每个节点分配唯一的层号和簇号,保证了在数据传输过程中不会出现回路和绕路。对该协议和LEACH,EECS协议进行对比,仿真结果表明HRP-CHR协议能更好的均衡网络能耗和提升网络生命周期。

To effectively balance the network energy consumption of the network and improve the survive time, a hierarchical routing protocol based on the cluster-head reconstruction named HRP-CHR is proposed. Firstly, The routing protocols are ana- lysed, it is pointed out that the energy consumption problem is the difficulty in the design process. On this basis, a non-uniform design method is designed, in the protocol, the network space is divided into multiple levels by the base station, each level con- tres on the base station, and the width of level increase from inside to outside. The method can effectively avoid the nodes near the base station to form energy hole. It can also avoid circuits in the data transmission through assigning a unique layer number and a cluster number for each node. Then by comparing this protocol with LAECH and EECS, the results show that HRP-CHR can balance the energy consumption and enhance the life time of the network much better.