Train-to-Train Connectivity for Safety-Critical Use Cases.

This paper develops some applications in which train-to-train (T2T) communications provide added value features to current railway communications systems, which are mainly based in train-to-ground (T2G) links. A campaign of measurements carried out in a Metro de Madrid depot is presented, where the feasibility of such systems is analyzed. The obtained results are both the jitter and delay in different situations. Besides, the broadcast of video over such link is tested.