A Novel QoS provisioning Scheme for OBS networks

S Askar, Georgios Zervas, David K. Hunter, Dimitra Simeonidou

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


In this paper we present a novel QoS provisioning
mechanism with real-time applications (such as video on demand,
Voice over IP, online gaming or Grid computing) when traverse
over OBS networks. Classified Cloning is proposed to provide
such applications a minimum loss rate while maintain the lowest
end-to-end delay and jitter values. NS-2 Simulator has been used
as the simulation tool after developing new OBS modules for the
evaluation purposes. An investigation for the performance of the
ingress node has been done in addition to the evaluation of the
performance of the suggested scheme. The obtained results
showed the outperformance of the suggested scheme over the
classical cloning scheme. In particular, the QoS provisioning in
term of loss rate, delay and the expectance of enhanced jitter are
guaranteed over the existing QoS guaranteeing-service scheme
like using of the offset time for providing a differentiation service
as those classical schemes will increase the end to end delay of the
original applications plus the incurred jitter. It is showed that
50% of the loss rate has been reduced as compared to the
performance of the classical cloning scheme.
Original languageEnglish
Title of host publicationBroadband Communications, Networks and Systems
Subtitle of host publication7th International ICST Conference on Broadband Communications, Networks, and Systems
PublisherSpringer Berlin Heidelberg
Number of pages7
ISBN (Print)978-3-642-30375-3
Publication statusPublished - 2010


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