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Recursive Bayesian traffic prediction for performance improvement in OBS networks Li, Rong
Abstract
This thesis deals with traffic prediction in Optical Burst Switched (OBS) networks with self-similar traffic, i.e., traffic with long-range dependence (LRD) properties. Aggregated traffic in high speed optical networks exhibits LRD properties. OBS is a recent promising optical network technology to facilitate IP-Over-WDM (Internet Protocol Over Wavelength Division Multiplexing). To improve the quality of service (QoS) in OBS transmission networks, traffic prediction is required for dynamic resource reservation. We present and discuss a model of IP traffic based on MMPP (Markov Modulated Poisson Process), which approximates LRD traffic by mimicking the hierarchical generation of data by Internet users. The MMPP model is capable of effectively capturing the key aspects of the traffic measured on an OBS edge router, hence representing an aggregation of the traffic generated by a number of sources. The main contribution of this thesis is to derive an optimal Bayesian predictor for the burst size at the ingress router of an OBS network for MMPP approximations of LRD traffic. Bayesian prediction yields the MMSE (Minimum Mean Square Error) estimate of the burst size. As shown in a simulated OBS testbed, such Bayesian predictor can yield substantial improvement in latency reduction and service differentiation of OBS network compared to linear predictors, without substantial increasing in computational complexity.
Item Metadata
Title |
Recursive Bayesian traffic prediction for performance improvement in OBS networks
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2005
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Description |
This thesis deals with traffic prediction in Optical Burst Switched (OBS) networks with
self-similar traffic, i.e., traffic with long-range dependence (LRD) properties. Aggregated
traffic in high speed optical networks exhibits LRD properties. OBS is a recent promising
optical network technology to facilitate IP-Over-WDM (Internet Protocol Over Wavelength
Division Multiplexing). To improve the quality of service (QoS) in OBS transmission
networks, traffic prediction is required for dynamic resource reservation. We present
and discuss a model of IP traffic based on MMPP (Markov Modulated Poisson Process),
which approximates LRD traffic by mimicking the hierarchical generation of data by Internet
users. The MMPP model is capable of effectively capturing the key aspects of the
traffic measured on an OBS edge router, hence representing an aggregation of the traffic
generated by a number of sources.
The main contribution of this thesis is to derive an optimal Bayesian predictor for the
burst size at the ingress router of an OBS network for MMPP approximations of LRD
traffic. Bayesian prediction yields the MMSE (Minimum Mean Square Error) estimate
of the burst size. As shown in a simulated OBS testbed, such Bayesian predictor can
yield substantial improvement in latency reduction and service differentiation of OBS
network compared to linear predictors, without substantial increasing in computational
complexity.
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Genre | |
Type | |
Language |
eng
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Date Available |
2009-12-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0065868
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2005-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.