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Proceedings Paper

An enhanced multi-priority traffic-grooming scheme based on traffic-partition for IP-over-WDM networks
Author(s): Jianshe Wang; Xiaolong Yang; Sheng Huang; Qianbin Chen
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Paper Abstract

Multi-priority traffic grooming, providing sub-wavelength traffics of different priorities with varying grooming policies, is an essential functionality for IP over WDM networks. It focuses on QoS guarantee and bigger accommodation for high priority traffics by using specific grooming policy and preemption mechanism. But even when the preemption is proposed, high priority traffics with high bandwidth requirements often experience a relatively high blocking. To resolve this issue, a traffic-partition mechanism is proposed, which partitions a traffic flow and spreads it over multiple paths. In particular, it considers number difference of o-e-o process over different paths in order to choose adapted paths to avoid receiving buffer overflow, which derives from different transmission delays over various lightpaths. The mechanism also explores a way to integrate with preemption algorithm to achieve better blocking performance. The simulation results show that it can effectively lower blocking probability for high priority traffics and bring a useful gain in network access fairness among traffics with different bandwidth requirements.

Paper Details

Date Published: 19 November 2007
PDF: 10 pages
Proc. SPIE 6784, Network Architectures, Management, and Applications V, 678438 (19 November 2007); doi: 10.1117/12.741714
Show Author Affiliations
Jianshe Wang, Chongqing Univ. of Posts and Telecommunications (China)
Xiaolong Yang, Chongqing Univ. of Posts and Telecommunications (China)
Univ. of Electronic Science and Technology of China (China)
Sheng Huang, Chongqing Univ. of Posts and Telecommunications (China)
Qianbin Chen, Chongqing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 6784:
Network Architectures, Management, and Applications V
Jianli Wang; Gee-Kung Chang; Yoshio Itaya; Herwig Zech, Editor(s)

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