Show simple item record

dc.rights.licensehttps://creativecommons.org/licenses/by-sa/2.5/ar/es_AR
dc.contributor.authorMarenco, Javieres_AR
dc.contributor.authorBianchetti, Marceloes_AR
dc.date.accessioned2023-11-22T16:17:33Z
dc.date.available2023-11-22T16:17:33Z
dc.date.issued2023
dc.identifier.urihttps://repositorio.utdt.edu/handle/20.500.13098/12150
dc.description.abstractOne of the most promising solutions to deal with huge data traffic demands in large communication networks is given by flexible optical networking, in particular the flexible grid (flexgrid) technology specified in the ITU-T standard G.694.1. In this specification, the frequency spectrum of an optical fiber link is divided into narrow frequency slots. Any sequence of consecutive slots can be used as a simple channel, and such a channel can be switched in the network nodes to create a lightpath. In this kind of networks, the problem of establishing lightpaths for a set of end-to-end demands that compete for spectrum resources is called the routing and spectrum allocation problem (RSA). Due to its relevance, RSA has been intensively studied in the last years. It has been shown to be NP-hard and different solution approaches have been proposed for this problem. In this paper we present several families of valid inequalities, valid equations, and optimality cuts for a natural integer programming formulation of RSA and, based on these results, we develop a branch-and-cut algorithm for this problem. Our computational experiments suggest that such an approach is effective at tackling this problem.es_AR
dc.format.extent34 p.es_AR
dc.format.mediumapplication/pdfes_AR
dc.languageenges_AR
dc.publisherUniversidad Torcuato Di Tellaes_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.subjectInteger programminges_AR
dc.subjectValid inequalitieses_AR
dc.subjectNetworkinges_AR
dc.subjectOptical fiberses_AR
dc.subjectFlex-grides_AR
dc.titleA branch-and-cut algorithm for the routing and spectrum allocation problemes_AR
dc.typeinfo:eu-repo/semantics/preprintes_AR
dc.type.versioninfo:eu-repo/semantics/submittedVersiones_AR


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record