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dc.contributor.authorAgustí Torra, Anna
dc.contributor.authorCervelló Pastor, Cristina
dc.contributor.authorFiol Mora, Miquel Àngel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica
dc.date.accessioned2011-01-13T17:03:37Z
dc.date.available2011-01-13T17:03:37Z
dc.date.created2009-03
dc.date.issued2009-03
dc.identifier.citationAgustí, A.; Cervelló Pastor, C.; Fiol, M. A. Load-balanced wavelength assignment strategies for optical burst/packet switching networks. "IET communications", Març 2009, vol. 3, núm. 3, p. 381-390.
dc.identifier.issn1751-8628
dc.identifier.urihttp://hdl.handle.net/2117/11020
dc.description.abstractLoss-free schemes are defined to ensure successful packet/burst transmissions in optical packet/burst switching networks. To this end, they rely on a collision-free routing and wavelength assignment (CF-RWA) scheme combined with simple contention resolution mechanisms that guarantee the absence of losses in intermediate links. Here, the CF-RWA problem is studied. In particular, by using graph theory, the problem of finding CF-RWA schemes that minimise the number of wavelengths to serve a given traffic matrix is set. The problem is simplified when it is formulated by using pre-defined sets of non-colliding paths. Within this framework, the problem is shown to be equivalent to finding a given vertex-set colouring of the so-called restriction digraph. Here, two heuristic algorithms are proposed to obtain such vertex-set colourings. One of them provides a suitable CF-RWA without having to solve the minimisation problem. By way of example, the proposed method is applied to the NSFNet and the EON network providing quasi-optimal results.
dc.format.extent10 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
dc.subject.lcshWavelength division multiplexing
dc.subject.lcshOptical communications
dc.subject.lcshPacket switching (Data transmission)
dc.titleLoad-balanced wavelength assignment strategies for optical burst/packet switching networks
dc.typeArticle
dc.subject.lemacXarxes de telecomunicacions òptiques
dc.subject.lemacDades -- Transmissió
dc.contributor.groupUniversitat Politècnica de Catalunya. COMBGRAPH - Combinatòria, Teoria de Grafs i Aplicacions
dc.contributor.groupUniversitat Politècnica de Catalunya. BAMPLA - Disseny i Avaluació de Xarxes i Serveis de Banda Ampla
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac683019
dc.description.versionPostprint (published version)
local.citation.authorAgustí, A.; Cervelló Pastor, C.; Fiol, M. A.
local.citation.publicationNameIET communications
local.citation.volume3
local.citation.number3
local.citation.startingPage381
local.citation.endingPage390


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