摘要
数据收集是无线传感器网络的一个基本功能,由于部署在基站周围的传感器节点承担着网络内大部分的负载,因此导致能量迅速耗尽.但是现有的负载平衡的基站移动策略只能在传感器节点被均匀布撒的情况下才能有效地延长网络寿命.本文针对在含有洞的无线传感器网络区域中,提出了基站移动的4种轨迹,基站沿着边界之间的中轴线进行移动,把中轴线上的节点作为汇聚节点,可以降低包的丢失率.实验仿真结果表明,该算法不仅能平衡节点负载,提高包的接收率,也降低了网络能耗,延长了网络寿命.
Data gathering is the basic function of wireless sensor networks.Because the sensor nodes located near a base station have to relay data for a large part of the network and thus deplete their batteries very quickly.Load balance base station movement schemes are not available to improve network life unless the sensor nodes are distributed.So in the anisotropic sensor network with holes,we propose four trajectories that base station will move along the medial axis between the border and the border.The nodes in the medial axis as convergence nodes can reduce the rate of data loss.Simulation results demonstrate that the algorithm not only balances the node workload,improve quantity of data transmission,but also improves the life of the network.
出处
《小型微型计算机系统》
CSCD
北大核心
2012年第8期1685-1688,共4页
Journal of Chinese Computer Systems
基金
国家自然科学基金项目(60970123)资助
关键词
无线传感器网络
移动基站
汇聚节点
网络寿命
wireless sensor networks
mobile base station
convergence nodes
the life of the network
