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Performance Modelling and Traffic Characterisation of Optical Networks

Harry Mouchos, Athanasios Tsokanos and Demetres D. Kouvatsos
NetPen – Networks and Performance Engineering Research Unit, Informatics Research Institute, University of Bradford, Bradford, West Yorkshire, UK
Network Performance Engineering, Lecture Notes in Computer Science, 2011, Volume 5233/2011, 859-890

@article{mouchos2011performance,

   title={Performance modelling and traffic characterisation of optical networks},

   author={Mouchos, H. and Tsokanos, A. and Kouvatsos, D.},

   journal={Network performance engineering},

   pages={859–890},

   year={2011},

   publisher={Springer}

}

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A review is carried out on the traffic characteristics of an optical carrier’s OC-192 link, based on the IP packet size distribution, traffic burstiness and self-similarity. The generalised exponential (GE) distribution is employed to model the interarrival times of bursty traffic flows of IP packets whilst self-similar traffic is generated for each wavelength of each source node in the optical network. In the context of networks with optical burst switching (OBS), the dynamic offset control (DOC) allocation protocol is presented, based on the offset values of adapting source-destination pairs, using preferred wavelengths specific to each destination node. Simulation evaluation results are devised and relative comparisons are carried out between the DOC and Just-Enough-Time (JET) protocols. Moreover parallel generators of optical bursts are implemented and simulated using the Graphics Processing Unit (GPU) and the Compute Unified Device Architecture (CUDA) and favourable comparisons are made against simulations run on general-purpose CPUs.
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