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基于时空相关的传感器网络汇聚查询算法

A spatial-temporal correlation based aggregation query algorithm for wireless sensor networks
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摘要 减少网络中的数据传输量是传感器网络节约能量、延长网络生命的重要方法.提出一种基于时空相关的传感器网络汇聚查询算法STCAQ.在STCAQ中,首先通过基于时间相关的预测算法对网络中节点采样数据进行汇聚;然后依据节点采样数据汇聚结果,通过基于空间相关判定算法查询空间相关区域信息.仿真结果表明,STCAQ在能量消耗、查询质量和网络数据量等方面优于ESA算法. Reducing data size is one of the most important way to save the energy and delay the network lifetime in WSN. A spatial-temporal correlation based on aggregation query algorithm, STCAQ, was proposed. STCAQ firstly aggregated datas sampled by nodes by the prediction way based on temporal- correlation, and then provided a way to query the information of the spatial-correlated area by the way based on spatial-correlation.Simulation results showed that STCAQ was superior to ESA in energy consumption, query quality and reducing data size sent by nodes and network traffic.
作者 王雷春 李艳梅 周国玉
机构地区 湖北大学计算机与信息工程学院
出处 《湖北大学学报（自然科学版）》 CAS 2014年第2期185-189,194,共6页 Journal of Hubei University：Natural Science
基金 湖北省教育厅青年人才基金(Q20111003)资助
关键词 传感器网络 时间相关 空间相关 汇聚查询 spatial-correlation temporal-correlation aggregation query
分类号 TP391 [自动化与计算机技术—计算机应用技术]
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湖北大学学报（自然科学版）
2014年 第2期

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