Abstract: The performance of TCP (Transmission Control Protocol) is often degraded when the end-to-end path includes a satellite link. Among the factors that can adversely affect TCP performances over satellite links, we give the long round trip time (RTT), the high bit error rate (BER) and the variable RTT. With regard to the long RTT problem which implies two major problems (TCP fairness and the inefficient use of the bandwidth), we proposed a new policy for TCP congestion avoidance. This policy, which we referred to CANIT (Congestion Avoidance with Normalized Interval of Time) allows TCP senders of all connections sharing the same network resource to accelerate their rates similarly during congestion avoidance phase. In former work, we showed, in a no satellite environment, that this policy is fairer than the standard one, and provides an efficient use of the bandwidth. In this paper, we study the performance of CANIT algorithm taking into account the satellite environment and especially the problems of the variable RTT
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