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Proceedings Paper

An RWA algorithm for OBS networks based on iterative local optimization of total blocking probability
Author(s): Tomohiro Yoshikawa; Hidetaka Nagashima; Hiroshi Hasegawa; Ken-ichi Sato
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Paper Abstract

We propose a routing and wavelength assignment algorithm for Optical Burst Switching (OBS) networks that utilizes centralized control. First, a method that can estimate the expected total blocking time in the network is presented. Then the proposed algorithm minimizes the estimated blocking time by simple iterative local optimization in terms of the traffic demand between each pair of nodes. We demonstrate that the proposed algorithm attains much smaller blocking probability than conventional distributed control algorithms. It is also shown that with introduction of optical buffers and burst retransmission, the proposed method realizes low burst loss rates (<10-6) acceptable for most applications.

Paper Details

Date Published: 19 November 2007
PDF: 6 pages
Proc. SPIE 6783, Optical Transmission, Switching, and Subsystems V, 67831N (19 November 2007); doi: 10.1117/12.745026
Show Author Affiliations
Tomohiro Yoshikawa, Nagoya Univ. (Japan)
Hidetaka Nagashima, Nagoya Univ. (Japan)
Hiroshi Hasegawa, Nagoya Univ. (Japan)
Ken-ichi Sato, Nagoya Univ. (Japan)


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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