无线传感器网络的数据聚合技术

Fundamental technique of for wireless sensor networks:Data aggregation

介绍了无线传感器网络中的重要技术——数据聚合。首先介绍数据聚合和路由协议的关系,数据类型及数据采集的算法;接着以directed diffusion和Greedy Aggregation为例重点介绍了数据传播协议;另外从数据库角度介绍数据融合的实施,综合讨论了有损和无损的算法的特性,最后引入聚合质量的评价。

Data aggregation as the fundamental technique for WSNs is mainly introduced. First, the relation between data aggregation and routing and the data gathering algorithm are described, then taking two typical disseminating algorithm as example, data disseminating and data aggregation are introduced. In Addition, the implement data aggregation in database, concept oflossy and lossless aggregation is given. Finally, the evaluation of aggregation quality is briefly discussed.