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Journal of Emerging Trends in Computing and Information Sciences >> Call for Papers Vol. 8 No. 3, March 2017

Journal of Emerging Trends in Computing and Information Sciences

A Composite Scheduling Approach for Burst Loss Minimization in Optical Burst Switched Networks

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Author Laxman D. Netak, Girish V. Chowdhary, Jyoti G. Borade, Vinay Suryawanshi
ISSN 2079-8407
On Pages 1258-1264
Volume No. 3
Issue No. 8
Issue Date August 01, 2012
Publishing Date August 01, 2012
Keywords Optical burst switching (OBS), Wavelength division multiplexing (WDM), Horizon, Void filling (VF), Control packet (CP), Channel scheduling


Abstract

Abstract—In optical burst switched (OBS) networks, burst scheduling is one of the key issue, which affects the performance of networks. Several, scheduling algorithms have been used, such as horizon and void filling based algorithms. Void filling algorithms reduces burst loss, but it has more execution time as compared to horizon algorithms. On the other hand, horizon algorithms has less execution time, but account poor bandwidth utilization. To take advantages of both the algorithms, composite scheduling can be used. In composite scheduling algorithm, at a time one algorithm is selected based on the information of current voids interval of data channels. This approach increases the bandwidth utilization and decreases time complexity. The network performance in terms of burst losses is evaluated using simulation model. The simulation results shows that composite scheduling is more effective and has less burst dropping as compared to individual scheduling algorithm contained in it. Also, it is observed that composite scheduling algorithm using LAUC and Min-EVF performs better in terms of burst loss as compared to rest of the composite scheduling algorithms.  

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