@article{Zalesky2007OBS,
author = {A. Zalesky and H. L. Vu and Z. Rosberg and E. W. M.
Wong and M. Zukerman},
title = {{OBS} contention resolution performance},
journal = {Performance Evaluation},
volume = {64},
number = {4},
pages = {357-373},
month = {May},
year = {2007},
abstract = {In this paper, a performance comparison of
resolution policies specific to optical burst switching is presented. A
framework, based on a reduced-load approximation, is developed to estimate path
blocking probabilities in an optical burst switched network of arbitrary
topology, in which any combination of the following resolution policies is
applied in a specific order: limited wavelength conversion, burst deflection and
burst segmentation. Our framework is used to compare the relative performance of
each resolution policy for two sets of ingress and egress router pairs defined
on the NSF network. With respect to the assumptions considered, it is shown that
limited wavelength conversion is more effective in reducing blocking relative to
burst deflection if the maximum wavelength conversion radius is sufficiently
large, otherwise burst deflection is more effective. Furthermore, limited
wavelength conversion or burst deflection are more effective in reducing
blocking relative to burst segmentation. Burst segmentation is justified as a
stand alone resolution policy; however, using burst segmentation to complement
another resolution policy offers only a marginal reduction in blocking. Both
just-in-time and just-enough-time scheduling is analyzed. Simulations are
implemented to corroborate the accuracy of our framework and extensions.}
}