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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...
Continued growth in data services coupled with the entrenchment of existing carrier infrastructures have inevitably forced a convergence of SONET/SDH and Ethernet technologies. As a result, the very notion of Ethernet connectivity has expanded beyond traditional local area domains into broader metro/wide area settings. The key enabling advances have come in the form of improved SONET/SDH provisioning...
In this paper, we proposed a novel Burst Drop Policy based on Hop Number Factor (HNF) in the core nodes of TCP over OBS networks, which is combined with Multiple Thresholds in the edge nodes. The proposed drop policy, HNF, takes the retransmission cost into account, and gives the burst with the larger Hop Number Factor the higher priority in the contention. On the other hand, for the retransmission...
The proposed mechanism includes a novel drop policy based on hop number in core nodes and multiple thresholds in edge nodes. The theoretical analyses and simulation show the mechanism can improve the OBS network performance.
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