An efficient admission control mechanism for optical burst-switched networks |
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| Authors: | Igor M Moraes Rafael P Laufer Daniel de O Cunha Otto Carlos M B Duarte |
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| Affiliation: | 1. Grupo de Teleinformática e Automa??o – GTA, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
2. Center for Embedded Networked Sensing – CENS, University of California, Los Angeles, Los Angeles, CA, USA
3. Laboratoire d’Informatique de Paris 6 – LIP6, Université Pierre et Marie Curie – Paris VI, Paris, France
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| Abstract: | This article proposes the load-level-based admission control (LLAC) mechanism in order to provide service differentiation
for optical burst-switched networks. The LLAC mechanism admits bursts of a given service class according to the network load
and a class-associated parameter. Based on this parameter, called load level, the proposed mechanism differentiates the burst blocking probability experienced by each service class. We develop an analytical
model for the proposed mechanism and evaluate its performance for different configurations through mathematical analysis.
The results show that the load-level-based mechanism reduces the blocking probability of high-priority bursts by two orders
of magnitude or more depending on the analyzed scenario. In addition, compared to other similar mechanisms, the load-level-based
mechanism effectively differentiates the services in all analyzed configurations, requires less states in optical burst switching
(OBS) nodes, and does not suffer from priority inversion.
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| Keywords: | Optical networks Optical burst switching Quality of service Service differentiation |
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