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一种突发性链路感知的自适应链路质量估计方法 被引量：2

A Bursty-Link-Aware Adaptive Link Quality Estimation Method
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摘要 高效、准确、实时而又稳定的链路质量估计是保证无线传感器网络上层协议性能的基础.针对复杂网络环境下高度动态变化的突发性链路,结合被动侦听和主动探测机制提出了一种突发性链路感知的自适应链路质量估计方法EasiLQE.节点通过周期性的发送控制分组,采用长周期主动探测机制探测链路的质量;同时,节点被动侦听RSSI均值,当低于某一阈值时,触发短周期链路质量探测过程.最后节点使用基于误差的滤波器(error-based filter,EF)估计链路在未来一段时间内的质量.实验结果表明,EasiLQE既能实时准确地感知突发性链路在短时间内的持续变化,又能平滑短暂地低幅度波动而保持良好的稳定性,同时维持较低的估计开销. 高效、准确、实时而又稳定的链路质量估计是保证无线传感器网络上层协议性能的基础.针对复杂网络环境下高度动态变化的突发性链路,结合被动侦听和主动探测机制提出了一种突发性链路感知的自适应链路质量估计方法EasiLQE.节点通过周期性的发送控制分组,采用长周期主动探测机制探测链路的质量;同时,节点被动侦听RSSI均值,当低于某一阈值时,触发短周期链路质量探测过程.最后节点使用基于误差的滤波器(error-based filter,EF)估计链路在未来一段时间内的质量.实验结果表明,EasiLQE既能实时准确地感知突发性链路在短时间内的持续变化,又能平滑短暂地低幅度波动而保持良好的稳定性,同时维持较低的估计开销.
作者 黄庭培 李栋 张招亮 崔莉
机构地区 中国科学院计算技术研究所 中国科学院研究生院
出处 《计算机研究与发展》 EI CSCD 北大核心 2010年第S2期168-174,共7页 Journal of Computer Research and Development
基金 国家"九七三"重点基础研究发展计划基金项目(2006CB303000) "新一代宽带无线移动通信网"国家科技重大专项项目(2009ZX03006-001-01) 广东省重大科技专项项目(2009A080207004)
关键词 无线传感器网络 链路质量估计 RSSI 突发性链路 基于误差的滤波器 wireless sensor networks link quality estimation received signal strength indicator bursty link error-based filter
分类号 TP3 [自动化与计算机技术—计算机科学与技术]
  • 相关文献

参考文献12

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二级参考文献10

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共引文献4

同被引文献14

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计算机研究与发展
2010年 第S2期

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