Proactive Data Filtering Algorithm for Aggregation in Wireless Sensor Networks

Sungrae CHO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.3   pp.742-749
Publication Date: 2008/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.3.742
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
data aggregation,  data fusion,  query,  wireless sensor network,  

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Summary: 
In this paper, proactive data filtering (PDF) algorithm is proposed for data aggregation (or data fusion) in wireless sensor networks. The objective of the algorithm is to further reduce the energy consumption when sensor nodes perform data aggregation. In many applications, the sensor field will be overwhelmed by unnecessary and redundant sensory information when the sink node disseminates a query throughout the sensor field. In order to reduce the energy consumption, our scheme employs intelligent decision logic in the sensor node which delays or deactivates the transmission of its response. A performance evaluation shows that data aggregation with the PDF significantly improves energy-efficiency.