Performance Analysis of Group Scheduling for Core Nodes in Optical Burst Switching Networks 


Vol. 29,  No. 8, pp. 721-729, Aug.  2004


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  Abstract

In this paper, we applied a group, scheduling algorithm to core nodes in an optical burst, switching (OBS) network and measuted its peiformance by simulation For the case of core nodes with multi-channel input/output poits, performance of the group scheduling has; been compared to that of the immediate scheduling since the group schceduling has a chaiacteristic of scheduling a group of bursts simultaneously in a time window using intormation collected from cones ponding buist header packets arlived cailier to a core node, simulation core node, simulation results show that the group scheduling outperforms the immediate scheduling in terms of both buist loss probability and chanriel utiliization and the difference gets larger as the load incicases Another nodc configuration in which wavelength conveiters are epuipped at the output ports has also been considered in this case, even though both performance mctlies of the group scheduling are almost the same as those of the immediate scheduling in the offered load lange between 01 and09, the group scheduling has lower wavelength conveision late the immediate scheduling by at least a factor of seven the fact leads us to the conclusion that the group scheduling makes it possible to implemet more economical OBS cote nodes.

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  Cite this article

[IEEE Style]

J. Shin, J. Lee, H. Kim, "Performance Analysis of Group Scheduling for Core Nodes in Optical Burst Switching Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 8, pp. 721-729, 2004. DOI: .

[ACM Style]

Jong-Dug Shin, Jae-Myong Lee, and Hyung-Suk Kim. 2004. Performance Analysis of Group Scheduling for Core Nodes in Optical Burst Switching Networks. The Journal of Korean Institute of Communications and Information Sciences, 29, 8, (2004), 721-729. DOI: .

[KICS Style]

Jong-Dug Shin, Jae-Myong Lee, Hyung-Suk Kim, "Performance Analysis of Group Scheduling for Core Nodes in Optical Burst Switching Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 8, pp. 721-729, 8. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880