Optical Burst Switching with Limited Deflection Routing Rules

HyunSook KIM  SuKyoung LEE  JooSeok SONG  

IEICE TRANSACTIONS on Communications   Vol.E86-B   No.5   pp.1550-1554
Publication Date: 2003/05/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
optical burst switching (OBS),  limited deflection routing,  QoS,  

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Optical Burst Switching (OBS) is one of the most important switching technologies in future optical Internet. One of critical design issues in OBS is how to reduce burst dropping resulting from resource contention. Especially when traffic load is high, there should be frequent deflection routing as well as more contentions in an optical burst-switched network. The burst loss performance can be improved by implementing a proper deflection routing scheme. In this paper, we propose a limited deflection routing scheme to prevent injudicious deflection routing. The proposed scheme reduces unnecessary contentions resulting from deflection routing itself, increasing the utilization of network resource such as channels. Simulation tests were performed to evaluate the performance of the proposed scheme.