Abstract:

The transport protocol is the basis of effective operation for the network. The long propagation delay, high bit error rate and other characteristics raise significant challenges to the design of the transport protocols of space networks. In this article, we classify the typical transport protocols of space networks into groups according to their design principles, and discuss the mechanisms, characteristics and limitations of each protocol. Finally, we summarize the research status and point out the development direction of the transport protocols in space networks.

Key words: space network;transport protocol;characteristics;limitation