摘要
对监测区域进行有效地覆盖以及最大限度延长网络生存周期是无线传感器网络研究的重点课题之一。为此,提出了一种基于节点调度策略的能量有效覆盖算法,该算法通过泊松分布模型构造节点概率密度公式,依照节点密度公式对所关注的目标进行有效覆盖;另一方面,通过节点自身状态调度机制更新以及对邻居节点进行匹配调度的动态转换,使得传感器节点剩余能量与节点消耗能量趋于平衡,从而达到延长网络生存周期。仿真实验结果表明,该算法可实现对监测区域的有效覆盖,同时优化了网络资源的配置,延长了网络生存周期。
The effective coverage of supervised zones and maximized extension of network life cycles are key topics in the re- search on wireless sensor networks. For this purpose, this paper presents a node scheduling strategy-based effective energy coverage algorithm. On the one hand, this algorithm effectively covers the chosen targets in accordance with the node probability density formula worked out on the Poisson distribution model. On the other hand, it enables the residual energy of the sensor nodes to be in balance with the node consumption energy through the node state scheduling mechanism updating and the dynamic conversion of the neighboring node matched scheduling so as to extend the network life cycle. The simulation results show that this algorithm can implement the effective coverage of the supervised zones, optimize the network resource allocation and extend the network life cycle.
出处
《光通信研究》
北大核心
2012年第6期52-55,共4页
Study on Optical Communications
基金
河南省科技攻关基金资助项目(092102310358)
河南省教育厅自然科学基金资助项目(2011A590001)
关键词
无线传感器网络
调度策略
生存周期
覆盖
能量
节点
wireless sensor network
scheduling strategy
life cycle
coverage
power
node
