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The Scientific World Journal
Volume 2014, Article ID 359897, 9 pages
Research Article

An Energy-Aware Routing Protocol for Query-Based Applications in Wireless Sensor Networks

1Wireless Networks and Multimedia Services Department, Institut Mines-Telecom, Telecom SudParis, 9 rue Charles Fourier, 91011 Evry Cedex, France
2Electrical and Computer Engineering Department, Isfahan University of Technology, Isfahan, Iran

Received 31 August 2013; Accepted 25 December 2013; Published 13 February 2014

Academic Editors: C. Pan and J.-K. Xiao

Copyright © 2014 Ehsan Ahvar et al. 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.


Wireless sensor network (WSN) typically has energy consumption restriction. Designing energy-aware routing protocol can significantly reduce energy consumption in WSNs. Energy-aware routing protocols can be classified into two categories, energy savers and energy balancers. Energy saving protocols are used to minimize the overall energy consumed by a WSN, while energy balancing protocols attempt to efficiently distribute the consumption of energy throughout the network. In general terms, energy saving protocols are not necessarily good at balancing energy consumption and energy balancing protocols are not always good at reducing energy consumption. In this paper, we propose an energy-aware routing protocol (ERP) for query-based applications in WSNs, which offers a good trade-off between traditional energy balancing and energy saving objectives and supports a soft real time packet delivery. This is achieved by means of fuzzy sets and learning automata techniques along with zonal broadcasting to decrease total energy consumption.