Abstract: Now, many international groups and researchers have studied the transport protocol for GEOIP networks,and many solutions have been proposed. However, due to the worse channel situation than that of GEO IP networks, the performance of these solutions degrades significantly in Inter-planet IP networks. A new transport protocol,TP-satellite+,was proposed for deep space Inter-planet IP networks. Simulation results show that TP-Satellite+ can resist the channel errors, reduce the setup time and the bandwidth used in the reverse path, enhance the performance of Inter-planet networks.

Key words: Deep space communication,Inter-panet networks, Transport control protocol,TP-Satcllite+