无线传感器网络中数据汇聚技术的研究

Survey on data aggregation techniques in wireless sensor networks

无线传感器网络能量和计算资源严重受限,数据汇聚技术是减少能耗、消除数据冗余、增加从源节点到基站的有用信息流、延长网络寿命的重要方法。数据汇聚可以集成在路由协议中,也可以实现与路由协议紧密交互的独立的协议(或技术)。首先介绍了无线传感器网络中数据汇聚协议的背景;然后分析和综述了主要的数据汇聚技术,包括汇聚路由、聚集函数、数据挖掘;最后提出了这个快速发展领域的研究方向。

Aiming the severe energy and computing resource constraints of wireless sensor networks, data aggregation is an important approach that assists it in decreasing the energy consumption, eliminating data redundancy, increasing the energy efficiency of the useful information flow from the source to the sink and extending the network lifetime. Data aggregation can be incorporated with routing protocols or can be implemented as individual protocols/techniques that interact closely with routing protocols. Firstly, the backgrounds of aggregation were introduced. Then the main aggregation techniques were analyzed and reviewed, including aggregation routings, aggregate functions and data mining. Finally, the future rescarch directions of data aggregation in wirelcss sensor network were pointed out.