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Analysis of blocking probability in optical burst switched networks

Photonic Network Communications volume 15, pages 227–236 (2008)Cite this article

Abstract

In this article, we study the blocking probability in a wavelength division multiplexing (WDM) based asynchronous bufferless optical burst switched (OBS) network, equipped with a bank of wavelength converters. Our analysis encloses two wavelength reservation schemes JIT (just-in-time) and JET (just-enough-time), and two-class data rate. The contribution of our work includes: (i) derivation of an accurate model for blocking probability of lower priority bursts in case of a non-preempted model; (ii) provision of the analytical model for blocking probability calculation in the OBS network, which includes these variables: two signaling schemes, partial wavelength conversion, two-class data, traffic intensity, cross-connect speed, number of wavelengths in WDM fiber, number of fibers in the node, number of wavelength converters, and number of nodes in the path; (iii) simulation results, which show that partial wavelength conversion provide quite satisfactory quality of service. We compare performance in a single OBS node, under various sets of parameter values. The OBS network shows great flexibility in terms of used multiclass data, and there is no dependence on the used higher layer protocol.

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Authors and Affiliations

  1. Department of Microelectronics and Engineering Physics, Faculty of Electrical Engineering, University of Belgrade, Bulevar kralja Aleksandra 73, Belgrade, 11120, Serbia

    Vladica Tintor, Petar Matavulj & Jovan Radunović

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  1. Vladica Tintor
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  2. Petar Matavulj
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  3. Jovan Radunović
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Correspondence to Petar Matavulj.

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Tintor, V., Matavulj, P. & Radunović, J. Analysis of blocking probability in optical burst switched networks. Photon Netw Commun 15, 227–236 (2008). https://doi.org/10.1007/s11107-007-0101-2

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  • DOI: https://doi.org/10.1007/s11107-007-0101-2

Keywords

  • Optical burst switching
  • Blocking probability
  • Wavelength reservation
  • Partial wavelength conversion