Multiclass wavelength reservation in optical burst switched WDM networks
Journal
2002 International Conference on Communications, Circuits and Systems and West Sino Exposition, ICCCAS 2002 - Proceedings
Pages
845-849
Date Issued
2002-07
Date
2002-07
Author(s)
Loi, Chi-Hong
Abstract
This paper proposes a preemptive multiclass wavelength reservation protocol to provide differentiated service for optical burst switched (OBS) networks, without requiring buffers at the WDM layer. Unlike existing approaches, such as JET QoS, which suffer from implementation constraints and which may degrade to classless schemes, our mechanism is robust and supports an incremental deployment of QoS support and cooperates well with other "best-effort" reservation mechanisms like Horizon and the original JET. We maintain a usage profile for each class at the router, and implement a preemptive wavelength reservation algorithm to ensure QoS. We also conduct simulations to evaluate performance. The result shows that our approach performs best in terms of lower blocking probability and higher resource utilization, making our approach an excellent QoS mechanism for OBS networks. © 2002 IEEE.
Subjects
differentiated service; Optical Burst Switching (OBS); wavelength reservation; WDM
Other Subjects
Blocking probability; Quality of service; Switching networks; Wavelength division multiplexing; Differentiated Services; Incremental deployment; Optical burst switching (OBS); Optical burst-switched networks; Reservation mechanism; Resource utilizations; Wavelength reservation; Wavelength reservation protocol; Optical burst switching
Type
conference paper
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