无线传感器网络路由算法改进及仿真研究  

Improved Route Algorithm of Wireless Sensor Networks

作　　者：赵妍[1] 

机构地区：[1]福州大学阳光学院

出　　处：《计算机仿真》2012年第4期138-141,共4页Computer Simulation

摘　　要：由于无线传感器能量消耗影响网络的寿命,传感器节点的能量无法更新且种能量受限,传统路由算法忽略簇头剩余能量情况,使剩余能量低的节点成为簇头而过早死亡,导致整个网络能量不均衡,网络生存时间过短。为了有效延长网络生存时间,提出一种改进的LEACH路由算法。在簇头选择阶段,采用剩余能量的簇头节点优先选择机制,避免剩余能量低的节点成为簇头,然后在数据传输阶段,用单跳和多跳的混合传输模式,使整个网络能量尽量均衡。仿真结果表明,相对于传统LEACH路由算法,改进算法更加均衡了网络中各节点的能量消耗,有效地防止剩余能量低的节点成为簇头,可延长整个网络的生存寿命。Wireless sensor network（WSN） is an energy limited special network,traditional LEACH routing algorithms can not consider the surplus energy of cluster head and energy balance,resulting in very short network survival time.In order to prolong the network survival time,this paper put forward an improved LEACH routing algorithm.In the cluster head choice stage,the cluster was chosen by the surplus energy nodes,avoid the nodes with low residual energy becoming cluster heads.Then,in data transmission stage,the hybrid transmission mode with single-hop and multi-hop was used to balance the whole network energy.The simulation results show that,compared with the traditional LEACH routing algorithm,the energy consumption of all nodes in the network is more balanced improved algorithm and the life time of the entire network is prolonged.

关 键 词：无线传感器网络 能量均衡 剩余能量级别 簇头选择 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]