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Proceedings Paper

A new bursty assigned traffic model and performance analysis in optical burst switching
Author(s): Wenfang Yu; Minghao Li; Chunhan Chen; Zhang Yu
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Paper Abstract

In OBS network, one key factor is implementing a switching fabric to achieve low bursts loss rate as low as possible. Another key factor in OBS network is scheduling bursts after switch fabric to an output port to achieve best utilizing bandwidth. Until now the performance of switch fabric and scheduling algorithm is analyzed with a uniform assigned traffic so called in this paper. The uniform assigned traffic is meant that the input traffic go to every output port with a same probability of 1/N independently. Unfortunately, this uniform assigned traffic may not the most suitable way to present the real world traffic. To deal with this problem, we present a new bursty assigned traffic model for analysis and performance evaluation of OBS network. Like a legacy bursty traffic the bursty assigned traffic is divided to two cycle: bursty cycle and nonbursty cycle. The input traffic is directed to an output port with a probability larger than 1/N in bursty cycle and is directed to an output port with a probability less than 1/N or none in nonbursty cycle. Then making use of the definition the bursts loss ratio of switch fabric and the LAUC-VF scheduling algorithm under uniform assigned and bursty assigned traffic is presented and compared in the paper.

Paper Details

Date Published: 19 November 2007
PDF: 11 pages
Proc. SPIE 6783, Optical Transmission, Switching, and Subsystems V, 67830Z (19 November 2007); doi: 10.1117/12.743283
Show Author Affiliations
Wenfang Yu, Wuhan Communication Command College (China)
Minghao Li, Huazhong Univ. of Science and Technology (China)
Chunhan Chen, Wuhan Communication Command College (China)
Zhang Yu, Wuhan Communication Command College (China)


Published in SPIE Proceedings Vol. 6783:
Optical Transmission, Switching, and Subsystems V
Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama; Chang-Soo Park, Editor(s)

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