QoS-enabled Distributed Access Optical Burst-Switched Networks

Joan Triay, Georgios Zervas, Cristina Cervello-Pastor, Reza Nejabati, Dimitra Simeonidou

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


Optical Burst Switching (OBS) has been proposed
as an efficient technology to cope with the ever increasing bursty
traffic on the Internet. The emergence of a broad range of
network-driven applications (e.g. multimedia, online gaming)
introduces the need for a network environment able to provide
service with different Quality of Service (QoS) guarantees. Burst
loss probability, as one of the main QoS metrics on bufferless
OBS networks, plays a considerable role on providing a network
service with a particular level of QoS. In this paper, a novel
MAC based protocol is proposed to support multiple QoS levels
on OBS networks without wavelength conversion. It has been
evaluated through extensive simulations and its simplistic form
makes it very promising. Results indicate that the protocol can
clearly provide a relative differentiation of services and guarantee
null (or negligible) burst loss probability for a wide network (or
offered) load range and, finally, low access delay for the highest
priority traffic.
Original languageEnglish
Title of host publicationInternational Conference on Optical Network Design and Modelling (ONDM)
ISBN (Print)978-1-4244-5973-5
Publication statusPublished - Feb 2010


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