东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (12): 1693-1696.DOI: -

• 论著 • 上一篇    下一篇

基于LQI的链路评估算法及其在WSN中的应用

张希元;赵海;朱剑;徐久强;   

  1. 东北大学信息科学与工程学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-12-15 发布日期:2013-06-22
  • 通讯作者: Zhang, X.-Y.
  • 作者简介:-
  • 基金资助:
    科技部火炬计划项目(2002EB010154);;国家发改委高技术产业化示范工程项目(20012167)

LQI based link evaluation algorithm and its application in wireless sensor networks

Zhang, Xi-Yuan (1); Zhao, Hai (1); Zhu, Jian (1); Xu, Jiu-Qiang (1)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-12-15 Published:2013-06-22
  • Contact: Zhang, X.-Y.
  • About author:-
  • Supported by:
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摘要： 在实验的基础上对一些链路质量评估参数进行对比之后,提出了一种基于LQI均值的链路评估算法.该算法能够在保障评估准确度的前提下减少冗余数据,从而降低能耗;采用该链路评估算法对ETX路由度量进行了修改,提出了一种IETX路由度量,并最终在Micaz节点上对该度量的选路性能进行测试.结果验证了基于LQI链路评估算法的IETX度量的选路可靠性与节能效果.

关键词: 无线传感器网络, 链路质量评估, 链路质量显示, 路由度量

Abstract: Communication quality evaluation is crucial to upper-layer protocols' design in wireless sensor networks. A link evaluation algorithm based on mean LQI is proposed by comparing some link quality evaluation parameters. This algorithm can reduce redundant data for energy saving under the precondition of ensuring evaluation precision. Then, an improved ETX (IETX) routing metric is presented, through the new link evaluation algorithm. The performance of the IETX metric is tested with the Micaz nodes as platform, and the result shows the reliability and energy saving effect of IETX metric.

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