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

• 作者: Jianzhong Li Lei Yu Siyao Cheng
• 来源期刊: 无线传感网络(英文)
• 学科: 数学
• 关键词: APPROXIMATE AGGREGATION CONTINUOUS AGGREGATION Sampling SENSOR NETWORK
• 年，卷（期）: 2010,（9）
• 页码范围: 675-682
• 页数: 8页
• 分类号: O1

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.