In the future, travel by train can also rub brush circle of friends to see the video. The reporter from the railway sector was informed that the fastest at the end of April, part of the train can be the loading of free WiFi system commissioning, the train passengers can enjoy the service network. It is reported that Qingdao to Ji'nan, Beijing train is expected to be the first early adopters, but there is news that WiFi trains missed free.
Reporters learned from the Ji'nan Railway Bureau, a total of 75 sets of Ji'nan Bureau of train installation and commissioning of WiFi, distributed in Qingdao, Ji'nan, Xi'an, Beijing and other lines. In addition to Ji'nan, Beijing Railway Bureau, there are more than 100 groups of trains are being carried out free WiFi system loading test. It is reported that the free train WiFi services by Railway Bureau and pass the joint operation of the group, the Beijing Railway Bureau, more than 100 group train distribution in Beijing to Shanghai, Qingdao, Kunming, Guangzhou, Lhasa, more than 50 lines. The vast majority of the train is expected to be completed by the end of 3, after the test, the end of 4 will provide free WiFi networking services for passengers. It is understood that Internet use is network app has through the railway department of security audit, this way to network directly or through the web pop access more security than.
It is understood, at present WiFi on the train have certain technical difficulties, it is generally through vehicular WiFi devices, along the 3G or 4G signal conversion for WiFi, namely through the device first to receive along three operators network signal, then the transformation for WiFi hotspots on the train to for passenger use. However, in the speeding train, how to ensure that the good experience of WiFi may face a test. When the train reached 300 to 200 kilometers per hour, the signal attenuation degree is very large, and in the three operators of frequent switching between the network, the signal will be unstable. In addition, in the sparsely populated area, if not the coverage density of the operator station, the signal will be affected. If the satellite signal is used, the cost is too high and the technology is not mature.