NDLI: Dynamic Bandwidth Allocation with void filling and multi-thread for Long Reach WDM/TDM PONs

Content Provider	IEEE Xplore Digital Library
Author	Buttaboni, A. De Andrade, M. Tornatore, M.
Copyright Year	2012
Description	Author affiliation: Politecnico di Milano, Via Ponzio 34/5, Milan, Italy (Buttaboni, A.; De Andrade, M.; Tornatore, M.)
Abstract	Dynamic Bandwidth Allocation is a major open research challenge in the migration of Passive Optical Network (PON) systems towards Long Reach PON, especially when hybrid WDM/TDM is used (LR WDM/TDM PON). New and efficient solutions for Dynamic Bandwidth and Wavelength Assignment are sought to address two main critical issues of such PON systems: how to schedule the transmissions over multiple wave-lengths and how to efficiently exploit the bandwidth in presence of the long propagation delays that characterize long reach scenarios. While several DBAs have been proposed for long-reach single-wavelength PON system or for WDM/TDM hybrid PONs (with no regard to the long reach aspect), only few DBAs have been investigated in the case of combined LR WDM/TDM PON scenario. Regarding LR TDM PONs, one of the most performing and widely used dynamic allocation schemes is the Multi-thread polling. Although this algorithm has provided good results when applied in these kind of networks, it has never been implemented into a LR WDM/TDM PON. For what concerns this latter network configuration, one of the most promising candidate for upstream bandwidth and wavelength allocation is the Earliest Finish Time with Void Filling (EFT-VF) algorithm. In this work, for the first time, we implement the Multi-thread polling in a LR WDM/TDM PON providing results in terms of average packet delay. Moreover, we propose a new DBWA scheme based on an effective combination of some features of EFT-VF and Multi-thread algorithms, which leads to a performance improvement compared to these algorithms.
Starting Page	1
Ending Page	6
File Size	1092294
Page Count	6
File Format	PDF
ISBN	9781467313902
e-ISBN	9781467313919
DOI	10.1109/NETWKS.2012.6381716
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-15
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Long-Reach PON Dynamic Bandwidth Allocation Hybrid WDM/TDM PON Time division multiplexing Wavelength division multiplexing Optical network units Filling Passive optical networks Delay Message systems
Content Type	Text
Resource Type	Article

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