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Design of green optical networks with signal quality guarantee

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10.1109/ICC.2012.6364041
 
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hdl:2117/24033

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Cavdar, Cicek
Ruiz Ramírez, MarcMés informacióMés informacióMés informació
Monti, Paolo
Velasco Esteban, Luis DomingoMés informacióMés informacióMés informació
Wosinska, Lena
Document typeConference report
Defense date2012
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Energy consumption of communication networks is growing very fast due to the rapidly increasing traffic demand. Consequently, design of green communication networks gained a lot of attention. In this paper we focus on optical Wavelength Division Multiplexing (WDM) networks, able to support this growing traffic demand. Several energy-aware routing and wavelength assignment (EA-RWA) techniques have been proposed for WDM networks in order to minimize their operational cost. These techniques aim at minimizing the number of active links by packing the traffic as much as possible, thus avoiding the use of lightly loaded links. As a result, EA-RWA techniques may lead to longer routes and to a high utilization on some specific links. This has a detrimental effect on the signal quality of the optical connections, i.e., lightpaths. In this study we quantify the impact of power consumption minimization on the optical signal quality. and address this problem by proposing a combined impairment and energy-aware RWA (IEA-RWA) approach. Towards this goal we developed a complete mathematical model that incorporates both linear and non-linear physical impairments together with an energy efficiency objective. The IEA-RWA problem is formulized as a Mixed Integer Linear Programming (MILP) model where both energy efficiency and signal quality considerations are jointly optimized. By comparing the proposed IEA-RWA approach with existing RWA (IA-RWA and EA-RWA) schemes, we demonstrate that our solution allows for a reduction of energy consumption close to the one obtained by EA-RWA approaches, while still guaranteeing a sufficient level of the optical signal quality.
CitationCavdar, C. [et al.]. Design of green optical networks with signal quality guarantee. A: IEEE International Conference on Communications. "IEEE International Conference on Communications (ICC 2012): Ottawa, Ontario, Canada, 10-15 June 2012". Otawa: Institute of Electrical and Electronics Engineers (IEEE), 2012, p. 3025-3030. 
URIhttp://hdl.handle.net/2117/24033
DOI10.1109/ICC.2012.6364041
ISBN978-1-4577-2052-9
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  • GCO - Grup de Comunicacions Òptiques - Ponències/Comunicacions de congressos [401]
  • Departament d'Arquitectura de Computadors - Ponències/Comunicacions de congressos [1.773]
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