摘要
延长传感器网络的生存周期,降低网络节点的能耗成为无线传感器网络(WSN)研究的关键。由于无线传感器网络能量有限,针对LEACH算法中簇首分布不均、簇首数目偏离最优值等对网络能耗的影响,提出了一种同时考虑节点剩余能量、最优簇数和簇首分布状况来选择簇首的算法EBCS-LEACH。新算法使簇首数目为最佳,以满足能量阈值的节点才能当选为簇首和对簇首的分布进行了相应调整。仿真结果表明,EBCS-LEACH算法延长了网络的生存周期,相比LEACH算法生命周期延长19.5%,同时能耗也更加均衡。
Reducing the energy consumption and extending network life-time are key techniques for Wireless Sensor Network （ WSN）. For energy constraints in wireless sensor network, this paper analyzed the uneven distribution of cluster- heads in Low-Energy Adaptive Clustering Hierarchy （LEACH） algorithm and the cluster-heads deviate from the optimal value, presented EBCS-LEACH in which node residual energy, the optimal number of cluster head and cluster head distribution were taken into account. The new algorithm allows that the number of cluster head is the best, the energy threshold of the node can be elected as cluster head and a corresponding adjustment to the distribution of cluster head. The simulation results show that the EBCS-LEACH achieves great advance in sensor and network life-time. Compared with LEACH, the EBCS-LEACH can prolong the network lifetime by 19.5 percent and balance the energy consumotion of network nodes at the same time.
出处
《计算机应用》
CSCD
北大核心
2012年第A01期32-35,共4页
journal of Computer Applications
关键词
无线传感器网络
LEACH协议
路由算法
生存周期
Wireless Sensor Network （WSN）
low-Energy Adaptive Clustering Hierarchy （LEACH） protocol
routingalgorithm, life-cycle
