Bounds on the Lifetime of Wireless Sensor Networks Employing Multiple Data Sinks

Azad, AP and Chockalingam, A (2006) Bounds on the Lifetime of Wireless Sensor Networks Employing Multiple Data Sinks. In: IEEE Global Telecommunications Conference (GLOBECOM 06), NOV 27-DEC 01, 2006, San Francisco, CA.

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Abstract

Employing multiple base stations is an attractive approach to enhance the lifetime of wireless sensor networks. In this paper, we address the fundamental question concerning the limits on the network lifetime in sensor networks when multiple base stations are deployed as data sinks. Specifically, we derive upper bounds on the network lifetime when multiple base stations are employed, and obtain optimum locations of the base stations (BSs) that maximize these lifetime bounds. For the case of two BSs, we jointly optimize the BS locations by maximizing the lifetime bound using a genetic algorithm based optimization. Joint optimization for more number of BSs is complex. Hence, for the case of three BSs, we optimize the third BS location using the previously obtained optimum locations of the first two BSs. We also provide simulation results that validate the lifetime bounds and the optimum locations of the BSs.

Item Type:	Conference Paper
Series.:	IEEE Global Telecommunications Conference (Globecom)
Publisher:	IEEE
Additional Information:	Copyright 2006 IEEE. Personal use of this material is permitted.However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Network lifetime; multiple base stations; optimal base station locations; energy efficiency
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	20 Apr 2011 06:27
Last Modified:	20 Apr 2011 06:27
URI:	http://eprints.iisc.ac.in/id/eprint/36752

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