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.
出处
《计算机仿真》
CSCD
北大核心
2012年第11期214-217,共4页
Computer Simulation
关键词
无线传感器网络
能量高效
簇
路由算法
多跳
Wireless sensor networks （WSNs）
Energy-efficient
Cluster
Routing algorithm
Multi-hop
