WIRELESS TRAIN CONTROL SYSTEM, ABOVE-GROUND CONTROL DEVICE, AND WIRELESS TRAIN CONTROL METHOD

An object is to obtain a wireless train control method capable of stable operation. A wireless train control system includes: a track circuit state information acquisition device that generates a track circuit state signal TR indicating whether a track circuit of a track is picked up or dropped and a time-triggered track circuit state signal TR-X indicating a drop of the track circuit at a timing delayed by a set time after the track circuit state signal indicates that the track circuit is dropped; and a ground control device that generates a stop limit point of a wireless-control-compliant train 41 by using presence information if a preceding train for the wireless-control-compliant train 41 is a wireless-control-compliant train 43, and generates the stop limit points of the wireless-control-compliant trains 41 and 43 by using the track circuit state signal TR and the time-triggered track circuit state signal TR-X if the preceding train for the wireless-control-compliant train 41 is a non-wireless-control-compliant train 42. The ground control device does not update the stop limit point if the track circuit state signal TR indicates that the track circuit is dropped while the time-triggered track circuit state signal TR-X indicates that the track circuit is picked up.