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dc.contributor.authorKlinkowski, Miroslaw
dc.contributor.authorCareglio, Davide
dc.contributor.authorSolé Pareta, Josep
dc.contributor.authorMarciniak, Marian
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors
dc.date.accessioned2010-12-29T11:57:24Z
dc.date.available2010-12-29T11:57:24Z
dc.date.created2009-07
dc.date.issued2009-07
dc.identifier.citationKlinkowski, M. [et al.]. Performance overview of the offset time emulated OBS network architecture. "Journal of lightwave technology", Juliol 2009, vol. 27, núm. 14, p. 2751-2764.
dc.identifier.issn0733-8724
dc.identifier.urihttp://hdl.handle.net/2117/10817
dc.description.abstractOptical burst switching (OBS) control architecture considers two different models for the management of the offset time in the network. The conventional OBS (C-OBS) introduces the offset time in soft-way by delaying the transmission of the burst relative to its control packet in the edge node. Another idea for an OBS architecture (E-OBS) comes from optical packet switching world and it intends to emulate offset time by means of an additional fiber delay unit introduced in the data path at the input port of the nodes. Although C-OBS has attracted lots of attention, in this paper we highlight that it possesses many difficulties that can be entirely removed in E-OBS. Issues such as unfairness in resource reservation, efficiency and complexity of burst scheduling, difficulty with alternative and backup routing, and quality of service (QoS) provisioning are studied. Moreover, E-OBS facilitates the application of several enhanced mechanisms. As an example, in this paper we analyze a QoS application based on a preemption window mechanism, which expands look-ahead processing window technique to the burst preemption context. Results show that this mechanism can achieve the performance of the conventional preemption scheme while avoiding the well-known problem of phantom burst generation.
dc.format.extent14 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
dc.subject.lcshOptical communications -- Quality control
dc.subject.lcshNetwork analysis (Planning)
dc.subject.otherNetwork architecture
dc.subject.otherOffset time provisioning
dc.subject.otherOptical burst switching (OBS)
dc.subject.otherQuality of service (QoS) provisioning
dc.titlePerformance overview of the offset time emulated OBS network architecture
dc.typeArticle
dc.subject.lemacXarxes de telecomunicacions òptiques
dc.subject.lemacAnàlisi de xarxes (Planificació)
dc.contributor.groupUniversitat Politècnica de Catalunya. CBA - Sistemes de Comunicacions i Arquitectures de Banda Ampla
dc.identifier.doi10.1109/JLT.2009.2016357
dc.rights.accessOpen Access
local.identifier.drac633252
dc.description.versionPostprint (published version)
local.citation.authorKlinkowski, M.; Careglio, D.; Solé, J.; Marciniak, M.
local.citation.publicationNameJournal of lightwave technology
local.citation.volume27
local.citation.number14
local.citation.startingPage2751
local.citation.endingPage2764


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