Reducing power consumption in backbone networks

  • Authors:
  • Luca Chiaraviglio;Marco Mellia;Fabio Neri

  • Affiliations:
  • Dip. di Elettronica, Politecnico di Torino, Italy;Dip. di Elettronica, Politecnico di Torino, Italy;Dip. di Elettronica, Politecnico di Torino, Italy

  • Venue:
  • ICC'09 Proceedings of the 2009 IEEE international conference on Communications
  • Year:
  • 2009

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Abstract

According to several studies, the power consumption of the Internet accounts for up to 10% of the worldwide energy consumption, and several initiatives are being put into place to reduce the power consumption of the ICT sector in general. To this goal, we propose a novel approach to switch off network nodes and links while still guaranteeing full connectivity and maximum link utilization. After showing that the problem falls in the class of capacitated multi-commodity flow problems, and therefore it is NP-complete, we propose some heuristic algorithms to solve it. Simulation results in a realistic scenario show that it is possible to reduce the number of links and nodes currently used by up to 30% and 50% respectively during off-peak hours, while offering the same service quality.