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Processing Ad-Hoc Queries in Wireless Sensor Networks

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3 Author(s)
Sanghun Yun ; Yeungnam Univ., Gyeongsan ; Haengrae Cho ; Xingcheng Liu

A wireless sensor network (WSN) consists of a large number of sensor nodes that can measure and process data while communicating through wireless channels. In this paper, we propose a hybrid query processing (HQP) algorithm for user queries submitted to the WSN. Unlike previous algorithms that consider continuous queries only, HQP supports both continuous queries and ad-hoc queries. Specially, HQP tries to reduce energy consumption of ad-hoc queries by using query results cached at each sensor node which are created during the execution of the previous continuous queries. HQP can also exploit a trade-off between energy consumption and data accuracy. We compare the performance of HQP with previous algorithms using our simulation model.

Published in:

Information Technology: New Generations, 2008. ITNG 2008. Fifth International Conference on

Date of Conference:

7-9 April 2008