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Proceedings Paper

O/E/O storage mechanism for burst contention resolution in optical burst switching networks
Author(s): Yutong Sun; Xiaoping Zheng; Hanyi Zhang; Tao Pu; Lei Wang; Yili Guo
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Paper Abstract

Burst contention resolution is one of the most important issues in optical burst switching (OBS) networks. In this paper, an O/E/O conversion and electronic storage mechanism for contention resolution is proposed. Compared with fiber delay lines (FDL) O/E/O strategy can provide much longer and continuous delay time for the contending bursts, which can significantly reduce burst loss rate. For this mechanism, a new burst scheduling algorithm called Shortest Delay- Best Fit (SD-BF) is proposed here to improve bandwidth utilization. In a network, O/E/O can be implemented with FDL to achieve a better performance while reducing node cost. In this paper, a semi-share structure for this combination strategy is proposed to balance the cost and performance. Numerical results show that a better performance is achieved by the combination strategy in the long haul back-bone networks. We also investigate the maximum electronic RAM capacity needed in the nodes to support O/E/O storage, and how to implement Quality-of-Service (QoS) with O/E/O storage.

Paper Details

Date Published: 8 December 2005
PDF: 8 pages
Proc. SPIE 6021, Optical Transmission, Switching, and Subsystems III, 602115 (8 December 2005); doi: 10.1117/12.636571
Show Author Affiliations
Yutong Sun, Tsinghua Univ. (China)
Xiaoping Zheng, Tsinghua Univ. (China)
Hanyi Zhang, Tsinghua Univ. (China)
Tao Pu, Tsinghua Univ. (China)
Lei Wang, Tsinghua Univ. (China)
Yili Guo, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 6021:
Optical Transmission, Switching, and Subsystems III
Rodney S. Tucker; Dominique Chiaroni; Wanyi Gu; Ken-ichi Kitayama, Editor(s)

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