基于LEACH的WSN路由算法研究

为了提高无线传感器网络的可扩展性在其路由协议中通常会采用分簇技术。由于无线传感器网络由能量有限的节点组成,网络中节点的能量多为电池供电,因此高效节能以延长网络生命周期是无线传感器网络必须要充分考虑的问题。针对LEACH(低功耗自适应分簇)路由算法在簇首选择时存在的问题,提出一种改进建议。对改进算法利用仿真工具NS2进行仿真,并对节点存活率和网络能耗两个方面进行比较与分析,仿真结果表明,改进算法很好地延长了网络的寿命。

Research on WSN Algorithms Based on LEACH

The clustering techniques are used in routing protocols in order to increase the scalability of wireless sensor networks. Wireless sensor network is composed of energy-limited nodes,in which the nodes are supplied with battery.Therefore the energy-efficient must be taken into account to prolong the network life cycle.The Low Energy Adaptive Clustering Hierarchy(LEACH) routing protocol has some deficiency at the phase of cluster-head selection,so an improved routing protocol is proposed in this paper.The simulation is implemented for improved algorithm by using simulation tool NS2 and the comparison and analysis are performed for node survival rate and network power consumption.The simulation results show that the improved algorithm can prolong the life cycle of network.