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A Novel QoS Provisioning Scheme for OBS Networks

  • Shavan K. Askar
  • Georgios Zervas
  • David K. Hunter
  • Dimitra Simeonidou
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 66)

Abstract

This paper presents Classified Cloning, a novel QoS provisioning mechanism for OBS networks carrying real-time applications (such as video on demand, Voice over IP, online gaming and Grid computing). It provides such applications with a minimum loss rate while minimizing end-to-end delay and jitter. ns-2 has been used as the simulation tool, with new OBS modules having been developed for performance evaluation purposes. Ingress node performance has been investigated, as well as the overall performance of the suggested scheme. The results obtained showed that new scheme has superior performance to classical cloning. In particular, QoS provisioning offers a guaranteed burst loss rate, and delay unlike existing proposals for QoS implementation in OBS which use the burst offset time to provide such differentiation. Indeed, classical schemes increase both end-to-end delay and jitter. It is shown that the burst loss rate is reduced by 50% reduced over classical cloning.

Keywords

QoS provisioning Optical Burst Switching Cloning 

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Copyright information

© ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering 2012

Authors and Affiliations

  • Shavan K. Askar
    • 1
  • Georgios Zervas
    • 1
  • David K. Hunter
    • 1
  • Dimitra Simeonidou
    • 1
  1. 1.School of Computer Science and Electronic EngineeringUniversity of EssexColchesterUK

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