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On the Co-Existence of 10G-EPONs and WDM-PONs: A Scheduling and Bandwidth Allocation Approach

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4 Author(s)
Kiaei, M.S. ; Dept. of Eng. & Com puter Sci., Concordia Univ., Montreal, QC, Canada ; Assi, C. ; Lehan Meng ; Maier, M.

Dynamic bandwidth allocation and grant scheduling are important factors when designing passive optical networks. In this paper, we investigate the problem of optimal scheduling and bandwidth allocation in next generation 10G-EPON coexisting with 1G WDM-PONs. We propose a network architecture for providing this coexistence and derive an ILP model for offline joint scheduling and bandwidth assignment for 10G-TDM and 1G-WDM ONUs. To address the scalability of the ILP model, we introduce a Tabu Search based heuristic for efficiently obtaining near optimal solutions. We further explore the tradeoff which exists in terms of delay, scheduling length, and channel utilization, when separate or the same DBA modules are used for 1G- and 10G-ONUs.

Published in:

Lightwave Technology, Journal of  (Volume:29 ,  Issue: 10 )

Date of Publication:

May15, 2011

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