source: CRIENGLISH.com

Chinese passengers on high-speed trains are soon to end their days suffering from weak network signals as WiFi is to be installed on the trains in December, Xinhua News Agency reports.
Satellite transceivers, devices used for transmitting WiFi signals, have been installed on trains for further testing.
It is estimated that the WiFi will be officially up and running by December.
The transceiver was developed by the 29th research institute of China Electronics Technology Group Corporation (CETC).
Zhang Jie, a senior engineer from the institute, says that the high-speed trains in China now run at up to 350 km per hour, and their technology helps the WiFi signal to be uninfluenced by a train traveling under 500 km per hour. However, the number of users should not surpass 700, but since current high-speed trains have a capacity of around 560 people, the technology is fine for now.