簇结构对无线传感器网络干扰及生命周期的影响  

Influence of Cluster on Interference and Lifetime in Wireless Sensor Networks

作　　者：李宁[1] 郭平[2] 赵娟[2] 杨帆 

机构地区：[1]后勤工程学院后勤信息与军事物流工程系 [2]后勤工程学院训练部 [3]61733部队

出　　处：《后勤工程学院学报》2015年第2期89-96,共8页Journal of Logistical Engineering University

摘　　要：为降低网络干扰,延长生命周期,针对扇形环分簇的无线传感器网络,引入功率控制策略以改进传统的物理干扰模型和能耗模型。在此基础上,通过分析数据包产生过程,对网络干扰和生命周期进行计算。数值计算结果表明,网络中内外环宽度相差较小时,生命周期较长,但对干扰无影响;外环簇数应适当多于内环簇数;扇形环簇的数量增多时,网络干扰加剧,然而生命周期得到延长。研究结果为优化无线传感器网络中簇结构提供了依据。To reduce the network interference and improve the lifetime, sectoring-cluster based wireless sensor networks are studied. Traditional physical interference model and energy consumption model are improved by means of transmission power of sensor nodes. Then network interference and lifetime are calculated based on the improved models and the analysis of packet generation process. The result of numerical calculation shows that while the width difference between inner and outer rings is less obvious,the network has a longer lifetime. But the width difference has no effect on interference. The number of clusters in outer rings should be more than inner rings. The scale of sectoring-cluster is in positive correlation with either network interference or lifetime. The research result provides the foundation for optimizing the cluster structure in wireless sensor networks.

关 键 词：无线传感器网路 干扰 生命周期 扇形环簇 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]