摘要
由于传感器节点电池电量有限,因此在无线传感器网络中如何节能是一个关键问题.对经典的LEACH(Low Energy Adaptive Clustering Hierarchy)协议做出改进:提出了一种新型的簇首选择机制.算法通过综合考虑候选节点的剩余能量、地理位置等参数来优化簇首的选择,从而有效地降低了低能量与位置不佳的节点被选为簇首的可能性,进一步保证网络内节点能量负载的均衡性.仿真结果表明,新型的簇首选择机制能够有效平衡节点的能量消耗分布,延长节点与网络的寿命.
Due to the special character of the wireless sensor nework and the energy constraint of the sensor node, the energy efficiency is key question which should be solved in the wireless sensor network. This paper introduces a new strategy of cluster-head selection. The remaning energy and the position of the sensor node are considered as the parameter to optimize the process of cluster-head selection,which can it aviods choosing nodes with lower residual energy and bad position as cluster-heads and then provide the energy load＇s proportionality of sensor node. The simulation results show that the new strategy of cluster-head selection can improve the lifetime of sensors and networks.
出处
《长沙理工大学学报（自然科学版）》
CAS
2007年第3期79-82,共4页
Journal of Changsha University of Science and Technology:Natural Science
基金
湖南省自然科学基金资助项目(05JJ30123)
湖南省教育厅科研项目(05C246)
关键词
无线传感器网络
LEACH协议
节能
簇首选择
wireless sensor network
LEACH protocol
energy efficient
custer-head selection
