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PI-OBS: a parallel iterative optical burst scheduler for OBS networks

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5 Author(s)
Pavon-Marino, P. ; Univ. Politec. de Cartagena (UPCT), Cartagena, Spain ; Veiga-Gontan, J. ; Ortuno-Manzanera, A. ; Cerroni, W.
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This paper presents the PI-OBS algorithm, a parallel-iterative scheduler for OBS nodes. Conventional schemes are greedy in the sense that they process headers one by one. In PI-OBS, all the headers received during a given time window are jointly processed to optimize the delay and output wavelength allocation, applying void filling techniques, and allowing traffic differentiation. Results show a similar or better performance than the LAUC-VF algorithm, commonly used as a performance bound for OBS schedulers. The PI-OBS scheduler has been designed to allow parallel electronic implementation similar to the ones in VOQ schedulers, with a deterministic response time.

Published in:

High Performance Switching and Routing, 2009. HPSR 2009. International Conference on

Date of Conference:

22-24 June 2009

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