On the Use of Balking for Estimation of the Blocking Probability for OBS Routers with FDL Lines

  • D. Morató
  • J. Aracil
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3961)


This paper deals with estimation of blocking probabilities for OBS switches with Fiber Delay Lines (FDLs) and full wavelength conversion. An incoming burst that finds the wavelengths occupied is temporarily stored in a FDL. Hence, contention will be sorted out successfully if the residual life of the system is smaller than the maximum FDL delay. In order to derive the blocking probability, the most accurate methodology to date is the use of balking systems [1,2,3,4]. Even though the approach is accurate for very short lengths of the FDLs we identify the cases in which inaccuracy is detected. This happens precisely when the system works with low loss probabilities. Mainly for large number of wavelengths on the fibers and values of the FDL length at least in the vicinity of the burst service time.


Output Port Residual Life Blocking Probability Optical Burst Switching Optical Packet 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • D. Morató
    • 1
  • J. Aracil
    • 2
  1. 1.Universidad Publica de NavarraSpain
  2. 2.Universidad Autónoma de MadridSpain

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