Efficient Channel Scheduling Technique Using Release Time Unscheduled Channel Algorithm in OBS WDM Networks 


Vol. 30,  No. 10, pp. 912-921, Oct.  2005


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  Abstract

Optical burst switching(OBS) is a promising solution for building terabit optical routers and realizing IP over WDM. Channel scheduling Algorithm for reduce contention is one of the major challenges in OBS. We address the issue of how to provide basic burst channel scheduling in optical burst switched WDM networks with fiber delay lines(FDLs). In OBS networks the control and payload components of a burst are sent separately with a time gap. If CHP arrives to burst switch node, because using scheduling algorithm for data burst, reservation resources such as wavelength and transmit data burst without O/E/O conversion, because contention and void between burst are happened at channel scheduling process for data burst that happened the link utilization and bust drop probability. Existent proposed methods are become much research to solve these problems. Propose channel scheduling algorithm that use Release Time of bust to emphasize clearance between data and data dissipation that is happened in data assignment in this treatise and maximize bust drop probability and the resources use rate (RTUC : Release Time Unscheduled Channel). As simulation results, Confirmed that is more superior in terms of data drop and link utilization than scheduling algorithm that is proposed existing. As simulation results, confirmed improved performance than scheduling algorithm that is proposed existing in terms of survival of burst, efficiency resource and delay. However, In case load were less, degradation confirmed than existent scheduling algorithm relatively, and confirmed that is superior in data drop aspect in case of load increased.

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  Cite this article

[IEEE Style]

S. Cho, S. Kim, D. Choi, "Efficient Channel Scheduling Technique Using Release Time Unscheduled Channel Algorithm in OBS WDM Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 912-921, 2005. DOI: .

[ACM Style]

Seok-man Cho, Sun-myeng Kim, and Dug-kyoo Choi. 2005. Efficient Channel Scheduling Technique Using Release Time Unscheduled Channel Algorithm in OBS WDM Networks. The Journal of Korean Institute of Communications and Information Sciences, 30, 10, (2005), 912-921. DOI: .

[KICS Style]

Seok-man Cho, Sun-myeng Kim, Dug-kyoo Choi, "Efficient Channel Scheduling Technique Using Release Time Unscheduled Channel Algorithm in OBS WDM Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 10, pp. 912-921, 10. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880