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A Design of WDM/TDM-PON Provisioning for Future Optical Access Network Upgrade
Sungkuen LEE Eallae KIM Yongwon LEE Sangrok LEE Daekwang JUNG Seongtaek HWANG Yunje OH Jinwoo PARK
Publication
IEICE TRANSACTIONS on Communications
Vol.E90-B
No.9
pp.2456-2463 Publication Date: 2007/09/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.9.2456 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Fiber-Optic Transmission for Communications Keyword: Passive Optical Network (PON), Dynamic Bandwidth Allocation (DBA), Time Division Multiplexing (TDM), Wavelength Division Multiplexing (WDM),
Full Text: PDF(500.3KB)>>
Summary:
In this paper, we propose a PON-based access network based on conventional TDM-PON architecture for the smooth, economical and effective transition to the future optical access network. We also propose a dynamic MAC protocol for wavelength channel and bandwidth allocation in the TDM-PON subscriber networks, which can provide enhanced network scalability and flexibility, and greater adaptability to the increasing number of subscribers in TDM-PON. In the proposed dynamic MAC protocol, several key functions are manifested, such as multiple wavelength channel utilization and dynamic allocation of multiple time-slots to a user depending on SLA between OLT and ONUs to meet QoS requirements. A dedicated control channel is used for delivering the request and status information between OLT and ONUs. We evaluate the performances of the proposed MAC protocol thru a statistical queuing analysis and numerical simulations. In addition, through simulations using various traffic models we verify the superior performance of the proposed approach by comparing it with conventional TDM-PONs.
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