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Proceedings Paper

Enhanced dynamic bandwidth allocation in WDM-PON
Author(s): Xin Ye; Ajaz Sana; Chadi M. Assi; Mohamed A. Ali
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Paper Abstract

WDM based passive optical network (PON) upgrades current TDM based PON at the architecture, protocol and dynamic bandwidth allocation algorithms to provide higher bandwidth in the access networks. Various Dynamic Wavelength and Bandwidth Allocation algorithms for WDM-PON have been studied. These DWBA algorithms exploit both inter-channel and intra-channel statistical multiplexing in order to achieve better performance, especially when the load on various channels is not symmetric. However, these algorithms let all ONUs share all wavelengths equally, and decouple bandwidth allocation from the wavelength assignment, which may cause bandwidth fragmentation across different wavelengths, and these algorithms further strictly limit the ONUs only to use one wavelength per allocation cycle, hence, leading to the underutilized network performance. To overcome the above limitation, we propose an enhanced dynamic wavelength and bandwidth allocation (EDBA) algorithm, which integrates wavelength assignment with bandwidth allocation process. We use extensive simulation to compare the performance of EDBA to another DWBA algorithm in 3.

Paper Details

Date Published: 10 September 2007
PDF: 9 pages
Proc. SPIE 6776, Broadband Access Communication Technologies II, 67760H (10 September 2007); doi: 10.1117/12.753476
Show Author Affiliations
Xin Ye, City Univ. of New York (United States)
Ajaz Sana, City Univ. of New York (United States)
Chadi M. Assi, Concordia Univ. (United States)
Mohamed A. Ali, City Univ. of New York (United States)


Published in SPIE Proceedings Vol. 6776:
Broadband Access Communication Technologies II
Raj Jain; Benjamin B. Dingel; Shozo Komaki; Shlomo Ovadia, Editor(s)

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