Throughput Evaluations and Improvements of High Speed TCPs over OBS Networks

In this paper, we present simulation results evaluating the throughput performances of several high speed TCPs over OBS networks. We find that, among the five high speed TCPs including HSTCP, STCP, H-TCP, BIC, and CUBIC, in most cases BIC achieves the best throughput performances while STCP achieves the worst, and CUBIC will achieve throughputs remarkably lower than those of others when the burst loss probability is extremely high. Then we combine the high speed TCPs with B-Reno. Simulation results indicate that B-Reno can efficiently improve the throughputs of high speed TCPs over OBS networks.