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Proceedings Paper

Wavelength assignment algorithm considering the state of neighborhood links for OBS networks
Author(s): Yu Tanaka; Yusuke Hirota; Hideki Tode; Koso Murakami
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Paper Abstract

Recently, Optical WDM technology is introduced into backbone networks. On the other hand, as the future optical switching scheme, Optical Burst Switching (OBS) systems become a realistic solution. OBS systems do not consider buffering in intermediate nodes. Thus, it is an important issue to avoid overlapping wavelength reservation between partially interfered paths. To solve this problem, so far, the wavelength assignment scheme which has priority management tables has been proposed. This method achieves the reduction of burst blocking probability. However, this priority management table requires huge memory space. In this paper, we propose a wavelength assignment algorithm that reduces both the number of priority management tables and burst blocking probability. To reduce priority management tables, we allocate and manage them for each link. To reduce burst blocking probability, our method announces information about the change of their priorities to intermediate nodes. We evaluate its performance in terms of the burst blocking probability and the reduction rate of priority management tables.

Paper Details

Date Published: 25 October 2005
PDF: 10 pages
Proc. SPIE 6012, Optical Transmission Systems and Equipment for WDM Networking IV, 601209 (25 October 2005); doi: 10.1117/12.631027
Show Author Affiliations
Yu Tanaka, Osaka Univ. (Japan)
Yusuke Hirota, Osaka Univ. (Japan)
Hideki Tode, Osaka Univ. (Japan)
Koso Murakami, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 6012:
Optical Transmission Systems and Equipment for WDM Networking IV
Ken-ichi Sato; Werner Weiershausen; Achyut K. Dutta; Benjamin B. Dingel, Editor(s)

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