Analytical framework for end-to-end design of optical burst-switched networks

Authors:
Maurizio Casoni;Carla Raffaelli
Affiliations:
Department of Information Engineering, University of Modena and Reggio Emilia, Via Vignolese, 905 - 41100 Modena, Italy;D.E.I.S. - Department of Electronics, Computer Science and Systems, University of Bologna, Viale Risorgimento, 2, 40136 Bologna, Italy
Venue:
Optical Switching and Networking
Year:
2007

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Abstract

This paper presents an analytical model of TCP throughput in optical burst-switched (OBS) networks. Several parameters characterize this system and influence the network design process, such as the assembly time, the access bandwidth, the burst loss rate, and they are taken into account in the formulation of TCP send rates. Moreover burst loss is considered a consequence of contention in core nodes and it is formulated in relation to a quite general core node architecture. The novelty of the work is represented by the possibility of analytically representing the whole end-to-end connection so that a fast and effective tool to evaluate the relationships between network and access design is provided. An application example is given to prove the practical significance of the approach. Simulation results are provided to validate the model and the related assumptions.