Abstract: When a TCP stream goes through a broadband satellite network with a large bandwidth-delay product, the congestion window of the TCP stream is usually big so that there are lots of strongly bursty traffic on the network, which makes the intermediate nodes in the network so easily into the congested state, thus having a negative impact on overall network efficiency. This paper analyses the case and proposes an improved scheme: TCP-regular, so that TCP packets are sent not in burst but in regular over an entire round-trip time. Simulation shows that TCP-regular effectively enhances the overall efficiency and robustness of the broadband satellite networks.

Key words: TCP, broadband satellite networks, bandwidth-delay product