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

Summary: On the Use of Balking for Estimation of the
Blocking Probability for OBS Routers with FDL
Lines
D. Morat´o1
and J. Aracil2
1
Universidad Publica de Navarra, Spain
2
Universidad Aut´onoma de Madrid, Spain
Abstract. 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 suc-
cessfully if the residual life of the system is smaller than the maximum
FDL delay. In order to derive the blocking probability, the most accu-
rate methodology to date is the use of balking systems [1­4]. 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

  

Source: Rico, Javier Aracil - Departamento de Ingeniería Informática, Universidad Autonoma de Madrid

 

Collections: Computer Technologies and Information Sciences