Energy management through optimized routing and device powering for greener communication networks

Abstract : Recent data confirms that the power consumption of the ICT and of the Internet itself can nolonger be ignored considering the increasing pervasiveness and the importance of the sector on productivityand economic growth. Although the traffic load ofcommunication networks varies greatly over time andrarely reaches capacity limits, its energy consumptionis almost constant. Based on this observation, energymanagement strategies are being considered with thegoal of minimizing the energy consumption, so thatconsumption becomes proportional to the traffic loadeither at the individual device level or for the whole network. The focus of this article is to minimize the energyconsumption of the network through a managementstrategy that selectively switches off devices accordingto the traffic level. We consider a set of traffic scenariosand jointly optimize their energy consumption assuming a per-flow routing. We propose a traffic engineeringmathematical programming formulation based on integer linear programming that includes constraints onthe changes of the device states and routing paths tolimit the impact on quality of service and the signallingoverhead. We show a set of numerical results obtainedusing the energy consumption of real routers and studythe impact of the different parameters and constraintson the optimal energy management strategy. We alsopresent heuristic results to compare the optimal op-erational planning with on-line energy managementoperation.
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Contributor : Bernardetta Addis <>
Submitted on : Friday, November 28, 2014 - 11:00:53 AM
Last modification on : Thursday, February 7, 2019 - 5:34:48 PM


  • HAL Id : hal-01088564, version 1



Bernardetta Addis, Giuliana Carello, Antonio Capone, Luca G. Gianoli, Brunilde Sansò. Energy management through optimized routing and device powering for greener communication networks. IEEE/ACM Transactions on Networking, IEEE/ACM, 2014, 22 (1), pp.313 - 325. ⟨hal-01088564⟩



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