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

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 pro...

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Bibliographic Details
Published in:Journal of lightwave technology 2011-05, Vol.29 (10), p.1417-1426
Main Authors: Kiaei, M S, Assi, C, Lehan Meng, Maier, M
Format: Article
Language:English
Subjects:
Allocations
Bandwidth
Channel allocation
Channels
DBA
Delay
EPON
Mathematical models
Optical network units
Optimization
Passive optical networks
Scheduling
Utilization
Wavelength division multiplexing
WDM-PONs
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Summary: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.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2011.2121054