  How to implement an impeccable space system-of-systems (SoS) internetworking
architecture has been a significant issue in system engineering for years.
Reliable data transmission is considered one of the most important technologies
of space SoS internetworking systems. Due to the high bit error rate (BER),
long time delay and asymmetrical channel in the space communication
environment, the congestion control mechanism of classic transport control
protocols (TCP) shows unsatisfying performances. With the help of existing TCP
modifications, this paper contributes an aggressive congestion control
mechanism. The proposed mechanism is characterized with a fast start procedure,
as well as the feedback information to analyze network traffic and with a link
terminating processing mechanism, which can help to reveal the real reason of
packet loss, and maintain the size of congestion window at a high level.
Simulation results are shown in the end to verify the proposed scheme.
