计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (29): 86-88.DOI: 10.3778/j.issn.1002-8331.2010.29.024

• 网络、通信、安全 • 上一篇    下一篇

无线传感器网络链路报文丢失率推测方法研究

赵 涛   

  1. 安徽财经大学 信息工程学院,安徽 蚌埠 233000
  • 收稿日期:2010-05-14 修回日期:2010-08-02 出版日期:2010-10-11 发布日期:2010-10-11
  • 通讯作者: 赵 涛

Research on link loss rate inference in wireless sensor network

ZHAO Tao   

  1. School of Information Engineering,Anhui University of Finance & Economics,Bengbu,Anhui 233000,China
  • Received:2010-05-14 Revised:2010-08-02 Online:2010-10-11 Published:2010-10-11
  • Contact: ZHAO Tao

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。

Abstract: 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 results demonstrate that the proposed methodology can infer the loss rate of packet accurately without any burden on network,and scale to networks size.

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