传感器网络中一种分簇的高能效路由算法  

High Energy-Efficient Cluster-Based Routing Algorithm for Wireless Sensor Networks

作　　者：杨靖[1] 洪露[2] 白保良[1] 李捍东[1] 

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025 [2]淮海工学院电子工程系,江苏连云港222062

出　　处：《计算机仿真》2012年第11期214-217,共4页Computer Simulation

摘　　要：针对无线传感器网络中节点高耗能的工作特点,由于存在分簇结构不合理,造成负载不均衡。为此提出一种分簇的分布式能量高效路由算法HECRA。传感器节点根据节点ID(综合考虑剩余能量)自主地竞争簇首;通过优化分簇结构避免极小簇的存在,平衡了簇内能耗;簇首通过多跳方式将各个簇内收集的数据传送至sink节点,降低了簇首的能耗。仿真结果表明,HECRA比典型的分簇协议(PEGASIS),能提供更加均衡的能耗,延长网络的生存周期。Aiming at efficient usage of battery power and its even utilization in wireless sensor networks （WSNs）, a high energy-efficient cluster-based routing algorithm, called HECRA, was proposed in this paper. With HECRA, a node, according to its ID and residual energy, independently makes its decision to compete for becoming a cluster- head （CH）. Furthermore, HECRA adjusts the structure of clusters to balance the number of nodes among clusters. And then the CHs transmit data to sink by multi-hop method. Simulation results show that HECRA can produce more balanced energy consumption and longer network lifetime than traditional algorithms can.

关 键 词：无线传感器网络 能量高效 簇 路由算法 多跳 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] TP393[自动化与计算机技术—控制科学与工程]