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The Scientific World Journal
Volume 2013, Article ID 834653, 10 pages
Research Article

Deadline-Aware Energy-Efficient Query Scheduling in Wireless Sensor Networks with Mobile Sink

Department of Computer Engineering, Atilim University, Incek, 06836 Ankara, Turkey

Received 26 March 2013; Accepted 7 May 2013

Academic Editors: A. Bogliolo, C.-M. Chen, W. Ding, C.-H. Ko, A. Manikas, and D. Zheng

Copyright © 2013 Murat Karakaya. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mobile sinks are proposed to save sensor energy spent for multihop communication in transferring data to a base station (sink) in Wireless Sensor Networks. Due to relative low speed of mobile sinks, these approaches are mostly suitable for delay-tolerant applications. In this paper, we study the design of a query scheduling algorithm for query-based data gathering applications using mobile sinks. However, these kinds of applications are sensitive to delays due to specified query deadlines. Thus, the proposed scheduling algorithm aims to minimize the number of missed deadlines while keeping the level of energy consumption at the minimum.