| 摘要 |
Disclosed is a train car Wi-Fi coverage network, comprising a train wired Ethernet communication subsystem, a train wireless coverage subsystem, a train-to-ground communication subsystem, and an onboard service subsystem. The train wired Ethernet communication subsystem comprises switches distributed in each train car and Ethernet network cables used for connecting the switches. The Ethernet network cables are connected across the train cars to interconnect the switches in each train car to form a train-wide ring network. The train wireless coverage subsystem is used for providing a terminal with a wireless access point. The train-to-ground communication subsystem is used for providing a communication channel for on-train network data and updating content of an onboard server. By means of deploying wireless APs and antennas in the interior of the train cars, the present invention implements comprehensive coverage of each car by Wi-Fi, thus satisfying passengers in acquiring great wireless signal coverage quality via the evenly distributed antennas while being at different locations in the train cars, preventing the signal loss in the prior art caused by running through train car metal body, and enhancing user access capabilities when the train is under a full load. |
