Review: A survey of quality of service differentiation mechanisms for optical burst switching networks

Authors:
Nail Akar;Ezhan Karasan;Kyriakos G. Vlachos;Emmanouel A. Varvarigos;Davide Careglio;Miroslaw Klinkowski;Josep Solé-Pareta
Affiliations:
Electrical and Electronics Engineering Department, Bilkent University, Bilkent 06800, Ankara, Turkey;Electrical and Electronics Engineering Department, Bilkent University, Bilkent 06800, Ankara, Turkey;Computer Engineering and Informatics Department, University of Patras, 26500 Patras, Greece;Computer Engineering and Informatics Department, University of Patras, 26500 Patras, Greece;Universitat Politècnica de Catalunya, 08034, Barcelona, Spain;Universitat Politècnica de Catalunya, 08034, Barcelona, Spain and National Institute of Telecommunications, 04894 Warsaw, Poland;Universitat Politècnica de Catalunya, 08034, Barcelona, Spain
Venue:
Optical Switching and Networking
Year:
2010

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Abstract

This paper presents an overview of Quality of Service (QoS) differentiation mechanisms proposed for Optical Burst Switching (OBS) networks. OBS has been proposed to couple the benefits of both circuit and packet switching for the ''on demand'' use of capacity in the future optical Internet. In such a case, QoS support imposes some important challenges before this technology is deployed. This paper takes a broader view on QoS, including QoS differentiation not only at the burst but also at the transport levels for OBS networks. A classification of existing QoS differentiation mechanisms for OBS is given and their efficiency and complexity are comparatively discussed. We provide numerical examples on how QoS differentiation with respect to burst loss rate and transport layer throughput can be achieved in OBS networks.