摘要
链路质量评估对无线传感器网络的上层协议设计至关重要.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,该评估模型能够通过节点感知到的LQI值推断出节点之间的链路质量状况.模型验证表明,该研究具有扩展性,所建立的链路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 evaluation of wireless communication link is crucial to the design of upper layer protocols of wireless sensor networks.Based on the statistical analysis made for a great deal of sampling values,a link evaluation model in terms of the Gaussian distribution is developed to infer the link quality or its condition between nodes from LQI（link quality indicate） values which the model is able to recognize.The model is verified and the results show that the model is extensible,i.e.,it may provide the valuable reference for not only the application of wireless sensor networks,but also the simulation study on upper layer protocols.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第9期1262-1265,共4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
链路质量评估
高斯分布
包接收率
接收信号强度显示
链路质量指示
link quality evaluation
Gaussian distribution
packet reception rate
received signal strength indicator
link quality indicator（LQI）
