Performance Analysis of Optical-Level Buffered Optical Burst Switching Node with Retransmission Technique

JungYul CHOI  JinSeek CHOI  Minho KANG  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.2   pp.452-458
Publication Date: 2006/02/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.2.452
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Parallel/Distributed Computing and Networking)
Category: Performance Evaluation
burst blocking model,  optical buffer,  optical burst switching (OBS),  retransmission,  

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In this paper, we develop an analytical model to evaluate the performance of optical burst switching (OBS) node with optical-level buffers for retransmission of blocked bursts. First, currently used burst blocking models and modelling of optical buffers at OBS nodes are shown to be inappropriate as a blocking model for retransmission in OBS nodes. Thus, we propose a new blocking model for the burst transmission mechanism with retransmission technique in an optical-level buffered OBS node. From the numerical analysis, we show the performance enhancement by applying optical buffers for retransmission of blocked bursts in terms of burst blocking probability and link utilization.