2results 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.

The invention relates to the technical field of phased-array antennas, and particularly discloses an open and extensible phased-array antenna sub-array architecture, an installation method and an array plane. Comprising a main frame internally provided with a cavity, a wave control mother board which is installed in the cavity and divides the cavity into a front cavity and a rear cavity, a front end tight coupling unit which is used for transmitting and receiving signals and is connected with the main frame, and a rear end open unit which is installed in the rear cavity and is provided with a standard module. The wave control mother board is connected with the front-end tight coupling unit and the rear-end open unit respectively; the end, close to the wave control mother board, of the front-end tight coupling unit is located in the front cavity. Reliability of radio frequency connection of the front-end tight coupling unit and stability of performance are guaranteed, openness of a processing part is achieved through the rear-end variable region formed by the rear-end open unit, phased-array antenna array planes of different scales and different capacities can be reconstructed, requirements of different application scenes are met, and the antenna has a wide application prospect. And the expandability of the system is better realized.