Design of Relay File Delivery Protocol in Deep Space Communication
Qinyu Zhang · Journal of Spacecraft TT&C Technology · 2011
The extremely far distance in deep space communication results in high link error rate.Therefore,reliable file delivery calls for frequent retransmissions.The propagation delay further prolongs file delivery time.This paper proposes an R-CFDP(Relay-CSSDS File Delivery Protocol) mechanism based on the store-and-forward strategy of CCSDS file delivery protocol.Three relay transmission algorithms are introduced.Theoretical and numerical expressions of the file delivery time are derived.Simulation results show that the R-CFDP mechanism has better performance than CFDP in terms of file delivery time.