无线传感器网络中的数据查询

Query Processing in Wireless Sensor Networks

无线传感器网络以数据为中心,提供数据采集、处理和查询功能.数据查询是无线传感器网络研究中的重点和热点问题.本文从查询过程的角度出发,对目前传感器网络数据查询研究现状进行了系统总结.在此基础之上,考虑传感器网络的异构性,提出了一种基于感知数据之间的数据信息的查询模型,并设计了感知数据交互必须的数据标签,给出了这种数据查询的应用实例.分析表明,该种数据查询能够大大提高传感器网络的查询效率,同时增强网络的健壮性,延长传感器网络使用寿命.

Wireless sensor networks are data centric, which provide data collection, processing and query services. Query processing is one of the hot spot in the research of wireless sensor networks. These paper overviews recent researches of data query in wireless sensor networks. Then a data collaboration based query model in heterogeneous sensor networks is proposed. The data tag is designed which is necessary for sensory data collaboration. By analyzing a mixed sensor networks application which uses the data tag, the query efficiency and network robust is improved and the lifetime of the sensor network is prolonged.