Application Scenarios for Vehicle-Ground Fast Link Handover
PIS used in urban rail transit delivers media news, sports events, advertisements, as well as notices, and train departure and arrival time to passengers. Nowadays, PIS is deployed by more and more rail transit enterprises. As an integral part of the PIS, the vehicle-ground communication subsystem enables moving trains to communicate with the ground network. With Mesh-based vehicle-ground fast link handover technology, the vehicle-ground communication subsystem offers high-quality data channels for vehicle-ground communications. Capitalizing on convenient and cost-effective WLANs, the vehicle-ground communication subsystem brings significant economic benefits to rail transit enterprises. As shown in Figure 1, a rail transit enterprise deploys trackside APs along the track and vehicle-mounted APs on the train. As the train moves forward, the working vehicle-mounted AP keeps switching connections with trackside APs through vehicle-ground fast link handovers to ensure reliable data communications.
