A novel scheme to reduce burst-loss and provide qos in optical burst switching networks

Authors:
Ashok K. Turuk;Rajeev Kumar
Affiliations:
Department of Computer Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, WB, India;Department of Computer Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, WB, India
Venue:
HiPC'04 Proceedings of the 11th international conference on High Performance Computing
Year:
2004

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Abstract

Burst loss due to contention is a major issue in optical burst switching networks In this paper, we propose a contention resolution scheme that uses a offset time different from that of conventional optical burst switching (OBS) to reduce burst loss and to provide QoS in optical burst switching networks The proposed scheme can be tuned to both prioritized traffic and delay constraint traffic by changing the offset time For selecting a data-channel, we propose three channel selection algorithms, namely Least Recently Used (LRU), First Fit (FF), and Priority Set (PS) algorithms We simulate and compare proposed scheme with the preemptive priority just-enough-time (PPJET) contention resolution scheme We consider bursty traffic in our simulation It is found that our scheme outperforms PPJET in burst-loss.