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IEICE Transactions on Communications 2008 E91-B(3):742-749; doi:10.1093/ietcom/e91-b.3.742
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Papers -- Network

Proactive Data Filtering Algorithm for Aggregation in Wireless Sensor Networks*

Sungrae CHO1

1 The author is with School of Computer Science and Engineering, Chung-Ang University, 221 Heukseok, Dongjak, Seoul 156-756, Republic of Korea. E-mail: srcho{at}cau.ac.kr


  Abstract

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.

Key Words: data aggregation, data fusion, query, wireless sensor network

Manuscript received July 17, 2007.

* This work was supported by the MIC, Korea, under the HNRC-ITRC program supervised by the IITA.


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