Integrated Evaluation of Performance and Technology-Throughput of Optical Burst Switching Nodes Under Dynamic Traffic

In this paper, we introduce an integrated analysis of quality-of-service (QoS) performance and technology for optical burst switching (OBS) nodes. Such an integrated approach is needed to comprehensively assess OBS nodes as both burst losses and signal degradation limit their maximum achievable thro...

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Bibliographic Details
Published in:Journal of lightwave technology 2008-07, Vol.26 (13), p.1969-1979
Main Authors: Gauger, C.M., Buchta, H., Patzak, E.
Format: Article
Language:English
Subjects:
Applied sciences
Architecture
Buffers
Bursting
Costs
Degradation
Delay lines
Dynamics
Exact sciences and technology
Fiber delay line (FDL) buffers
Integrated approach
node architecture
Operation, maintenance, reliability
Optical buffering
Optical burst switching
Optical losses
optical switching
Performance analysis
performance evaluation
Quality of service
scalability
Signal resolution
Studies
Switching
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teletraffic
Throughput
Traffic engineering
Traffic flow
Transmission and modulation (techniques and equipments)
wavelength converter
Wavelengths
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Summary:In this paper, we introduce an integrated analysis of quality-of-service (QoS) performance and technology for optical burst switching (OBS) nodes. Such an integrated approach is needed to comprehensively assess OBS nodes as both burst losses and signal degradation limit their maximum achievable throughput. We apply this analysis to the tune-and-select (TAS) node architecture as well as to extensions with fiber delay line (FDL) buffers and with limited tuning range converters. First, we discuss OBS and motivate the need for the proposed integrated analysis. We survey contention resolution schemes for OBS and discuss principal QoS performance results for wavelength conversion and FDL buffering. Also, we describe the basic and extended TAS architectures as well as their key physical limitations regarding maximum number of wavelengths and maximum throughput. For the different node architectures, we then present the results obtained in the integrated analysis. We compare them based on the maximum utilization as well as the maximum effective throughput under dynamic traffic. Finally, we compare the architectures with respect to their normalized cost per terabit per second (Tb/s) and study its sensitivity with respect to the cost ratio of their key components.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2008.922210