Energy Efficient Transmission Scheduling for Delay Constrained Wireless Networks

Nuggehalli, Pavan and Srinivasan, Vikram and Rao, Ramesh R (2006) Energy Efficient Transmission Scheduling for Delay Constrained Wireless Networks. In: IEEE Transaction on Wireless communications, 5 (3). pp. 531-539.

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Abstract

In this paper, we address the problem of energy efficient packet scheduling in a wireless environment. We consider a wireless transmitter which is limited by its finite battery resource. Our objective is to design a transmission schedule that maximizes battery lifetime subject to some delay constraints. To achieve this, we exploit two previously unconnected ideas: (i) Channel coding can be used to conserve energy by transmitting at reduced power levels over longer durations; (H) Electro-chemical mechanisms in batteries allow them to recover energy during idle periods. While the first idea favors extending transmission durations, the second idea requires the transmitter to be idle to allow for recovery. In other words, bursty packet transmissions interspersed with idle periods extend battery life. Therefore, a strategy which is based entirely on either one or the other idea is not optimal. We provide a framework to merge the two ideas. We consider two kinds of delay constraints, one a deadline constraint and the other an average delay constraint and show that energy aware scheduling strategies for both these scenarios can result in significant energy savings.

Item Type:	Journal Article
Publication:	IEEE Transaction on Wireless communications
Publisher:	IEEE
Additional Information:	Copyright 1990 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:	scheduling;Power control;Wireless LAN
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	25 Aug 2008
Last Modified:	19 Sep 2010 04:25
URI:	http://eprints.iisc.ac.in/id/eprint/6317

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