NDLI: Minimizing energy consumption by power-efficient radio configuration in fixed broadband wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Coudert, D. Nepomuceno, N. Rivano, H.
Copyright Year	2009
Description	Author affiliation: PROJET MASCOTTE, I3S (CNRS-UNSA) INRIA, Université de Nice Sophia, Sophia Antipolis, France (Coudert, D.; Rivano, H.) \|\| PROJET MASCOTTE, I3S (CNRS-UNSA) INRIA, Universidade Federal do Ceará Fortaleza, CE, Brazil (Nepomuceno, N.)
Abstract	In this paper, we investigate on minimizing the energy consumption of a fixed broadband wireless network through a joint optimization of data routing and radio configuration. Every link holds a set of power-efficient configurations, each of them associating a capacity with its energy cost. The optimization problem involves deciding the network's configuration and flows that minimize the total energy consumption. An exact mathematical formulation of the problem is presented. It relies on a minimum cost multicommodity flow with step increasing cost functions. We then propose a piecewise linear convex function that provides a good approximation of the energy consumption on the links, and present a relaxation of the previous formulation that exploits the convexity of the cost functions. This yields lower bounds on the energy consumption, and finally a heuristic algorithm based on the fractional optimum is employed to produce feasible solutions. Our models are validated through extensive experiments.
Starting Page	1
Ending Page	6
File Size	315349
Page Count	6
File Format	PDF
ISBN	9781424444403
DOI	10.1109/WOWMOM.2009.5282434
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-15
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Energy consumption Piecewise linear techniques Channel capacity Wireless networks Heuristic algorithms Piecewise linear approximation Telecommunication traffic Power generation economics Radio link Cost function
Content Type	Text
Resource Type	Article

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