无线传感器网络链路报文丢失率推测方法研究  

Research on link loss rate inference in wireless sensor network

作　　者：赵涛[1] 

机构地区：[1]安徽财经大学信息工程学院,安徽蚌埠233000

出　　处：《计算机工程与应用》2010年第29期86-88,共3页Computer Engineering and Applications

基　　金：2010安徽省级高校自然科学研究项目(No.KJ2010B002)

摘　　要：针对传感器网络能源有限的特征,提出一种适用于传感器网络的链路报文丢失率测量方法。根据在汇聚节点(sink)获取的网络数据报文,将链路报文丢失率推测形式化为MLE问题并用EM算法解决推测问题。仿真试验证明,算法在不增加网络负担的前提下,能够有效地推测链路的报文丢失率;随着网络规模的扩大,算法仍能准确地反映网络内部的链路性能。Due to the inherent stringent bandwidth and energy constraints,a link loss rate inference method applied to wireless sensor network is proposed.According to the sequence of data loss/receipt collected in the sink,the problem is formulated as a Maximum-Likelihood Estimation problem and is solved using the Expectation-Maximization algorithm.Simulation resuits demonstrate that the proposed methodology can infer the loss rate of packet accurately without any burden on network, and scale to networks size.

关 键 词：无线传感器网络 网络断层扫描 端到端 报文丢失率 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]