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Proceedings Paper

Fairness improvements in GMPLS-based wavelength-routed networks
Author(s): Yong Yin; Geng Sheng Kuo
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Paper Abstract

In future GMPLS-based wavelength-routed networks (WRNs), lightpaths are set up or torn down dynamically. Blocking probabilities of on-demand requests are an important performance measure. However, the network average blocking probability only indicates the global performance of the network. Due to large resource requirements and wavelength continuity constraint, the blocking probabilities of longer-hop connections are usually much higher than those of shorter-hop connections. This problem is the so-called fairness problem. In this paper, a priority-based control is proposed to improve the fairness between different connections. Connections with high blocking probabilities are assigned high priorities and they are able to preempt low priority connections with a predetermined probability. Both theoretical analyses and simulations are given. It is shown that the proposed control not only improves the fairness, but also ensures that the average blocking probability is not degraded much. Hence, the performance of the GMPLS-based optical networks will be improved greatly.

Paper Details

Date Published: 8 February 2005
PDF: 8 pages
Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); doi: 10.1117/12.577024
Show Author Affiliations
Yong Yin, Beijing Univ. of Posts and Telecommunications (China)
Geng Sheng Kuo, National Chengchi Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5626:
Network Architectures, Management, and Applications II
S. J. Ben Yoo; Gee-Kung Chang; Guangcheng Li; Kwok-wai Cheung, Editor(s)

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