Approximate Continuous Aggregation via Time Window Based Compression and Sampling in WSNs

作     者：Lei Yu Jianzhong Li Siyao Cheng 

作者机构：不详 

出 版 物：《Wireless Sensor Network》 (无线传感网络（英文）)

年 卷 期：2010年第2卷第9期

页      面：675-682页

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

主　　题：Approximate Aggregation Continuous Aggregation Sampling Sensor Network 

摘      要：In many applications continuous aggregation of sensed data is usually required. The existing aggregation schemes usually compute every aggregation result in a continuous aggregation either by a complete aggregation procedure or by partial data update at each epoch. To further reduce the energy cost, we propose a sampling-based approach with time window based linear regression for approximate continuous aggregation. We analyze the approximation error of the aggregation results and discuss the determinations of parameters in our approach. Simulation results verify the effectiveness of our approach.