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Multilink Performance of the Load-Level-Based Admission Control Mechanism for OBS Networks

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2 Author(s)
Moraes, I.M. ; Grupo de Teleinformatica e Automacao, Univ. Fed. do Rio de Janeiro, Rio de Janeiro ; Duarte, O.C.M.B.

In this paper, we analyze the performance of the load-level-based admission control mechanism (LLAC) for optical burst-switched networks in a multilink scenario. The goal of this mechanism is to differentiate the blocking probability of a given service class according to the network load and a class-associated parameter, called load level. For the proposed mechanism, we develop a multilink analytical model based on the reduced load approximation method, which provides a more accurate blocking probability estimation than a single-link model. With the multilink model, the performance of the load-level- based mechanism is even better than using a single-link model. For the analyzed scenarios, high-priority bursts experiences a blocking probability up to 60% lower than the one provided by the single-link model. The results also show that the load- level-based mechanism effectively differentiates the services in all analyzed scenarios, when compared to other similar mechanisms.

Published in:

Communications, 2008. ICC '08. IEEE International Conference on

Date of Conference:

19-23 May 2008

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