Title: Energy efficient positioning of mobile base stations to improve wireless sensor network lifetime
Authors: K. Pradeepa; S. Duraisamy
Addresses: Department of Computer Applications, Sri Krishna College of Engineering and Technology, Coimbatore, Tamilnadu 641008, India ' Department of Computer Applications, Sri Krishna College of Engineering and Technology, Coimbatore, Tamilnadu 641008, India
Abstract: Base station placement problem has concerned the attention of lot of researchers as it has a major impact on the lifetime of wireless sensor network. This paper suggests using multiple mobile base stations and proposes a near optimal solution for maximising the lifetime of wireless sensor network. The base station placement problem relies on the idea of discretising the search space and is formulated as an optimisation problem. The optimum positions for base stations are obtained as the solution to an integer linear programming (ILP) formulation. The contribution of our paper is twofold. First we have offered a novel technique to transform the infinite solution space to a finite space with promising performance. Second we have formulated an ILP formulation to determine best locations for positioning the base station. We expand our contribution further to a distributed protocol which will provide a completely distributed and localised solution to the placement problem.
Keywords: WSNs; wireless sensor networks; network lifetime; mobile base stations; discretisation; search space; mobility; distributed protocols; energy efficient positioning; energy efficiency; base station placement; integer linear programming; ILP.
International Journal of Sensor Networks, 2016 Vol.20 No.2, pp.92 - 103
Received: 28 Dec 2014
Accepted: 06 Mar 2015
Published online: 14 Feb 2016 *