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      Performance evaluation of slotted optical burst switching systems with quality of service differentiation

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      Author
      Ozturk, O.
      Karasan, E.
      Akar, N.
      Date
      2009
      Source Title
      Journal of Lightwave Technology
      Print ISSN
      0733-8724
      Electronic ISSN
      1558-2213
      Publisher
      Institute of Electrical and Electronics Engineers
      Volume
      27
      Issue
      14
      Pages
      2621 - 2633
      Language
      English
      Type
      Article
      Item Usage Stats
      135
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      96
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      Abstract
      Slotted optical burst switching (SOBS) has recently caught the attention of the optical networking community due to performance gains achievable with synchronous infrastructures. In this paper, we study the loss probabilities in a slotted optical burst switching node fed with Poisson burst traffic where the fixed burst size is an integer multiple of the slot length. We develop a discrete-time Markov chain (DTMC) based framework to obtain the loss probabilities in systems with and without quality of service (QoS) differentiation. In particular, we focus on analytical modeling of priority scheduling and offset-based QoS differentiation mechanisms for SOBS networks. The latter problem suffers from the curse of dimensionality which we address by a discrete phase type distribution approximation for the discrete Poisson distribution leading to an accurate approximation for the loss probabilities. A hybrid QoS mechanism which jointly utilizes offset-based differentiation together with priority scheduling is also analyzed. © 2009 IEEE.
      Keywords
      Discrete phase type distribution
      Offset-based differentiation
      Priority scheduling
      QoS
      Synchronous optical burst switching
      Permalink
      http://hdl.handle.net/11693/22692
      Published Version (Please cite this version)
      http://doi.org/10.1109/JLT.2009.2013483
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      • Department of Electrical and Electronics Engineering 3524
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