1results about How to "Achieve mutual compatibility" patented technology

Embodiments of the present disclosure provide a train-ground data communication system, method and storage medium, which are applied to the field of rail transit technology. The system comprises a WLAN system, an LTE system and a ground signal network. The WLAN system comprises a first vehicle-mounted subsystem and a first ground subsystem. The first vehicle-mounted subsystem comprises a first communication controller, a vehicle-mounted WLAN device and a first antenna feeder system. The first ground subsystem comprises a ground WLAN device. The LTE system comprises a second vehicle-mounted subsystem and a second ground subsystem. The second vehicle-mounted subsystem comprises a second communication controller, a TAU device and a second antenna feeder system. The second ground subsystem comprises an LTE access network, an LTE core network, an LTE gateway and a ground signal network gateway. The vehicle-mounted controller is connected with the ground signal network through the WLAN system and the LTE system respectively. The ground signal network is connected with a ground signal device. In this way, the existing WLAN mode and the upgraded LTE mode can be compatible with each other.