Simulation of loss-tolerant file delivery protocol adapted to deep space communication

Characteristics of deep space (huge delay, asymmetric bandwidth, large BER and packet loss ratio and intermittent link) limit the adoption of terrestrial transmission protocols. Using channel coding theory as a reference, loss-tolerant file delivery protocol (LTFDP) to adapt to deep space environments was proposed. Whenever the stations on Earth have received certain amount of packets and fulfilled the requirement of de-interweaver, reliability transmission of file is accomplished without acknowledgements. Size of file and transmission rate have great impact on LTFDP's performance in shorter distance; whereas propagation time is the main factor of transmission delay in longer distance. LTFTP can diminish file delivery time greatly and improve throughput by one-way feedback-free transmission and guarantee reliability of communication system for deep space communications.