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Load-balanced wavelength assignment strategies for optical burst/packet switching networks
dc.contributor.author | Agustí Torra, Anna |
dc.contributor.author | Cervelló Pastor, Cristina |
dc.contributor.author | Fiol Mora, Miquel Àngel |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada IV |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica |
dc.date.accessioned | 2011-01-13T17:03:37Z |
dc.date.available | 2011-01-13T17:03:37Z |
dc.date.created | 2009-03 |
dc.date.issued | 2009-03 |
dc.identifier.citation | Agustí, 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.issn | 1751-8628 |
dc.identifier.uri | http://hdl.handle.net/2117/11020 |
dc.description.abstract | Loss-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.extent | 10 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica |
dc.subject.lcsh | Wavelength division multiplexing |
dc.subject.lcsh | Optical communications |
dc.subject.lcsh | Packet switching (Data transmission) |
dc.title | Load-balanced wavelength assignment strategies for optical burst/packet switching networks |
dc.type | Article |
dc.subject.lemac | Xarxes de telecomunicacions òptiques |
dc.subject.lemac | Dades -- Transmissió |
dc.contributor.group | Universitat Politècnica de Catalunya. COMBGRAPH - Combinatòria, Teoria de Grafs i Aplicacions |
dc.contributor.group | Universitat Politècnica de Catalunya. BAMPLA - Disseny i Avaluació de Xarxes i Serveis de Banda Ampla |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 683019 |
dc.description.version | Postprint (published version) |
local.citation.author | Agustí, A.; Cervelló Pastor, C.; Fiol, M. A. |
local.citation.publicationName | IET communications |
local.citation.volume | 3 |
local.citation.number | 3 |
local.citation.startingPage | 381 |
local.citation.endingPage | 390 |
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