Study on feasibility of SATCOM for railway communication

Final Report
Transmission in return link: 15 kbps
The end-to-end transmission packet delay in return link is:
T tx = packet_size / throughput = 120 bytes / 15000 bps = 64 ms
T up = T down = sat_distance / speed = 36000 km / 300000 km/sec = 120 ms
This result shows that, although the big part of transmission delay in the Thuraya system is due to the GEO satellite, the very low data rate causes a nonnegligible
delay of more than 60 ms.
Doc.Nº: SRAIL-FNR-010-IND
Edit./Rev.: 1/1
Date: 16/02/2017
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