Performance analysis of the Sent-But-Sure strategy for Optical Burst and Packet Switched Networks |
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Authors: | Anna Agustí Author Vitae,Cristina Cervelló -PastorAuthor Vitae,Miquel A. FiolAuthor Vitae |
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Affiliation: | a Dep. d’Enginyeria Telemàtica, Av. Canal Olímpic s/n, 08860 Castelldefels, Spainb Dep. de Matemàtica Aplicada IV, C. Jordi Girona 1-3, 08034 Barcelona, Spainc Universitat Politècnica de Catalunya, Barcelona, Spain |
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Abstract: | This work proposes an analytical model to characterize the performance of a loss-free transmission strategy for Optical Burst and Packet Switched Networks, which ensures that a burst/packet will successfully reach its destination once it has been scheduled in the first link of its path. In this paper this strategy is called Sent-But-Sure (SBS) because it avoids losses in any intermediate node. The SBS strategy combines a routing and wavelength assignment scheme with simple contention resolution mechanisms. As a result, new burst/packet allocation attempts in an intermediate node only contend with bursts/packets in transit coming from a single input link. Moreover, bursts/packets in transit always have priority over bursts/packets whose transmission has not been scheduled yet. These two main features of the SBS strategy allow us to develop an analytical model based on a two-priority M/G/1 queueing model to characterize the network performance. |
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Keywords: | Optical Burst Switching Optical Packet Switching Loss-free transmission Queueing systems |
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