Calculating approximate blocking probabilities for TDM wavelength optical networks with OTSIs

Authors:
Yoong Cheah Huei;Pung Hung Keng;Nikolai Krivulin
Affiliations:
(Correspd. Tel.: +02 9237 6921/ Fax: +65 6469 0490/ E-mail: Ayoong1@gmail.com) School of Computing, National University of Singapore, Singapore;School of Computing, National University of Singapore, Singapore;Faculty of Mathematics and Mechanics, St. Petersburg State University, St. Petersburg, Russia
Venue:
Journal of High Speed Networks
Year:
2010

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Abstract

Previous works have proposed analytical models of TDM wavelength networks to evaluate the blocking performance, but they differ in their underlying assumptions and have varying computation complexities. In this paper, we propose an analytical model of TDM WDM optical networks with optical time-slot interchangers and without wavelength converter for minimum fixed hop routing. In order to make the analysis tractable, we propose a schema that work for any number of partition patterns regardless of numbers of links, wavelengths in each link, and time-slots in each wavelength. Our analytical model provides good accuracies in individual routes and average network blocking probability when compared with the simulation results.