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, the long round trip time (RTT) is given, 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), the paper proposed a new policy for TCP congestion avoidance. This policy, which the paper 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.
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