Hop-count-factor based fair burst contention resolution for TCP over OBS networks

Authors:
Shuping Peng;Zhengbin Li;Yongqi He;Anshi Xu;Zhenrong Zhang
Affiliations:
State Key Laboratory of Advanced Optical, Communication Systems & Networks, Peking University, Beijing, P. R. China;State Key Laboratory of Advanced Optical, Communication Systems & Networks, Peking University, Beijing, P. R. China;State Key Laboratory of Advanced Optical, Communication Systems & Networks, Peking University, Beijing, P. R. China;State Key Laboratory of Advanced Optical, Communication Systems & Networks, Peking University, Beijing, P. R. China;School of computer, electronics and information, Guangxi University, Nanning, P. R. China
Venue:
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Year:
2009

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Optical burst switching (OBS) - a new paradigm for an optical Internet

Journal of High Speed Networks - Special issue on optical networking

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Abstract

In this paper, the burst drop policy based on Hop-Count-Factor (HCF) is proposed in the core nodes of OBS networks. The proposed HCF Drop Policy (HCFDP) takes the fairness of the network resources reservation into account and gives the burst with the larger HCF the higher priority in the contention. We also analyze the retransmission scheme in OBS networks theoretically. When HCFDP is combined with the retransmission scheme, the simulation results show that the integrated mechanism can reduce the burst loss rate, decrease the round trip time and improve the throughput of OBS networks.