IP over WDM 網路中具服務品質保證及群播技術之研究(2/2)
Date Issued
2005-07-31
Date
2005-07-31
Author(s)
DOI
932213E002032
Abstract
This project 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.
Subjects
Optical Burst Switching (OBS)
WDM
differentiated service
wavelength
reservation
reservation
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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