摘要
研究了现有典型的无线传感器网络链路质量评估量度,针对单次RSSI,LQI的链路评估不准确问题,提出了均值RSSI,均值LQI链路评估方法;以MicaZ为实验平台,对无线传感器网络的通信链路进行了实验研究.在对大量采样值进行统计分析的基础上,提出了一个基于高斯分布的链路评估模型,并对模型进行了验证.该建模方法具有一般性,所建立的高斯链路评估模型既可为无线传感器网络的实际应用提供依据,又可为上层协议的仿真研究提供有价值的参考.
The existing typical link evaluation measures in wireless sensor networks are investigated, since the evaluation results of RSSI and LQI are inaccurate if they have just been evaluated for directly once. A new evaluation approach is therefore proposed taking the mean RSSI and mean LQI as the measures in link evaluation so as to avoid such as inaccurate evaluation result. Taking the nodes of MicaZ sensors as an experimental platform to investigate the communication links in wireless sensor network, a link evaluation model based on Gauss distribution is proposed and verified with lots of sampled values analyzed statistically. The modeling approach suggested has the generality that the Gauss link evaluation model thus developed will provide reference for not only applications, but also the simulation investigation on upper layer protocols in wireless sensor networks.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第4期500-503,520,共5页
Journal of Northeastern University(Natural Science)
基金
国家发改委示范工程项目[(2001)2167]国家科技部火炬计划项目(2002EB010154)
关键词
无线传感器网络
通信链路评估
包接收率
接收信号强度显示
链路质量显示
wireless sensor network
communication link evaluation
packet reception rate
RSSI （received signal strength indicator）
LQI（link quality indicator）
