As the environment of space network is much different from that of terrestrial wired network, the application of TCP
protocol in space network may faces some special challenges, First is that the Round Trip Time (RTT) is greatly
increased by the long propagation on the space radio channel, Second is that the high packets error rate resulting from
space channel cannot be considered negligible, Both these aspects may result in the TCP transmitting efficiency
degradation. A new scheme to enhance the TCP transmitting efficiency is proposed in this paper, simulation results
show that both the throughput and time delay is greatly improved by the use of this scheme.
A multi-time scale congestion control mechanism has been proposed in this paper, which utilizes the characteristic of self-similar in the network. Based on the theory of the alpha-stable processes, a prediction model is brought forward and a frame of multi-time scale is designed. The aim of all of those is try to avoid the congestion of network in statistically. Moreover, the frame of the new congestion control mechanism is described and the working procedure of the new congestion control mechanism is explained.
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