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Proceedings Paper

Dynamic wavelength and bandwidth allocation schemes in WDM-upgraded EPON
Author(s): Zheyuan Tan; Hai Liu; Feng Zhou; Deming Liu; Dexiu Huang
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Paper Abstract

In this paper we first provide a novel WDM-upgraded EPON architecture with single wavelength downstream at 10Gbps and multiple wavelengths upstream at 1Gbps using hybrid WDM/TDM access method. After reviewing previous work and deficiency on dynamic wavelength and bandwidth allocation schemes of WDM EPONs, we propose evolutionary schemes which based on bandwidth debit and credit to solve the problem of unfair bandwidth allocation. This proposed original method can achieve a win-win situation for both credit ONUs and debit ONUs. The credit ONUs obtain better service after crediting bandwidth to others; while the debit ONUs can consume more bandwidth in emergency, and return the debited bandwidth later. The simulation results show that these algorithms performed well in successful assurance of the SLA guaranteed bandwidth of ONUs in normal utilization and efficient network utilization, rather than penalties executed on all ONUs when there were some greedy ONUs.

Paper Details

Date Published: 19 November 2007
PDF: 9 pages
Proc. SPIE 6784, Network Architectures, Management, and Applications V, 67843P (19 November 2007); doi: 10.1117/12.745219
Show Author Affiliations
Zheyuan Tan, Huazhong Univ. of Science and Technology (China)
Hai Liu, Huazhong Univ. of Science and Technology (China)
Feng Zhou, Huazhong Univ. of Science and Technology (China)
Deming Liu, Huazhong Univ. of Science and Technology (China)
Dexiu Huang, Huazhong Univ. of Science and Technology (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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