Virtual topology design and flow routing in optical networks under multi-hour traffic demand
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AuthorPavón Mariño, Pablo; Aparicio Pardo, Ramón; Skorin-Kapov , Nina; García Manrubia, María Belén
Research GroupGrupo de Ingeniería Telemática (GIT)
Knowledge AreaIngeniería Telemática
SponsorsThe work described in this paper was carried out with the support of the BONE project (“Building the Future Optical Network in Europe”); a Network of Excellence funded by the European Commission through the 7th ICT-Framework Program. This research has been partially supported by the projects from the Spanish Ministry Of Education TEC2007-67966-01/TCM CON-PARTE-1, and TEC2008-02552-E, and it is also developed in the framework of the projects from Fundación Seneca (Regional Agency of Science and Technology of Region of Murcia ) 00002/CS/08 (FORMA) and "Programa de Ayudas a Grupos de Excelencia de la Región. de Murcia”, F. Séneca (Plan Regional de Ciencia y Tecnología 2007/2010).".
Bibliographic CitationPAVÓN MARIÑO, Pablo, APARICIO PARDO, Ramón, GARCÍA PARDO, Ramón, SKORIN KAPOV, Nina. Photonic Network Communications, 19 (1): 42-54, February 2010. ISSN 1387-974X
KeywordsDiseño virtual de la topología
Flujos de enrutamiento
Dominación del tráfico
Virtual Topology Design
This paper addresses the problem of finding a static virtual topology design and flow routing in transparent optical WDM networks under a time-varying (multi-hour) traffic demand. Four variants of the problem are considered, using fixed or dynamically adaptable (i.e., variable) flow routing, which can be splittable or unsplittable. Our main objective is to minimize the number of transceivers needed which make up for the main network cost. We formulate the problem variants as exact ILPs (Integer Linear Programs) and MILPs (Mixed ILPs). For larger problem instances, we also propose a family of heuristics based on the concept of domination between traffic matrices. This concept provides the theoretical foundations for a set of techniques proposed to reduce the problem complexity. We present a lower bound to the network cost for the case in which the virtual topology could be dynamically reconfigured along time. This allows us to assess the limit on the maximum possible benefit ...
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