DocumentCode :
2158283
Title :
Is it worth to keep an all optical OBS data plane?
Author :
Coutelen, Thomas ; Jaumard, Brigitte ; Hébuterne, Gérard
Author_Institution :
Concordia Univ., Montreal, QC
fYear :
2009
fDate :
3-6 May 2009
Firstpage :
283
Lastpage :
287
Abstract :
Optical burst switching (OBS) has been proposed a decade ago to enhance the resource utilization of the current OCS technology throughout statistical multiplexing. Therein the lack of optical memory is sidestepped by advanced signaling protocols that cannot, however, prevent contentions. The contention probability is highly related to the traffic profile in the core network for which the Engset model has been shown relevant. In OBS, as the data plane is transparent, the traffic profile in the core network is completely defined by the emission process. In this paper, we describe the emission process and identify configurations that take advantage of the Engset model. We then propose a hybrid architecture that features burst re-aggregation in some intermediate nodes to exploit the favorable emission configurations. This variation of OBS requires only a slight modification of the core nodes and significantly impacts the performances: Simulations performed on the EONET network show a significant loss rate reduction, whereas the delay is in the worst case slightly increased.
Keywords :
multiplexing; optical burst switching; signalling protocols; telecommunication traffic; EONET network; Engset model; OCS technology; burst reaggregation; emission process; network traffic; optical OBS data plane; optical burst switching; optical memory; resource utilization; signaling protocol; statistical multiplexing; Delay; Optical burst switching; Optical losses; Optical switches; Probability; Protocols; Resource management; Stimulated emission; Telecommunication traffic; Traffic control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering, 2009. CCECE '09. Canadian Conference on
Conference_Location :
St. John´s, NL
ISSN :
0840-7789
Print_ISBN :
978-1-4244-3509-8
Electronic_ISBN :
0840-7789
Type :
conf
DOI :
10.1109/CCECE.2009.5090138
Filename :
5090138
Link To Document :
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