When does China make a phone call on the plane?

There is a lot of controversy at home about whether you can use mobile phones on airplanes. This is not very advanced technology news, the use of satellite communications systems, not only the normal use of mobile phones on the aircraft, but also is expected to connect WiFi wireless Internet access, and watch real-time network video. If it does, it will be a major breakthrough in our country.

Some European airlines have been able to use their phones on airplanes for many years, and have been able to transmit television signals on the ground to the aircraft via satellite communications networks, which are no longer recorded in advance, but live in real-time with terrestrial television channels. In fact, these are technically not difficult. If the domestic civil aircraft installed satellite communication device, through the satellite ground main station, connecting aircraft terminals and other terrestrial network systems, can achieve video transmission and data exchange.

Of course, if only the use of satellite communications, the aircraft to call the need to install a special satellite phone, the use of special satellite communications frequency, the cost of expensive. So how do you use a regular phone on a plane? "This is technically not a problem, as long as we usually use mobile, unicom and other mobile phone signals ' connected ' on the plane can be." Yang Chuli revealed that domestic civil aviation companies have joined hands with the network operators successfully tested, on the ground to build a number of micro-base stations, dedicated to the high altitude emission signal, signal transmission to 8000 or even 10,000 meters high altitude will not have the slightest attenuation, the passenger's mobile phone to receive the signal can be normal use.

There is a network on the plane, and then installed without lines from the device, ordinary mobile phones, laptops and so on can connect WiFi to achieve the Internet. "Many of these flights abroad are not new, I believe that as our satellite applications in the field of expanding, in the relevant departments of the joint promotion, China's civil aviation passengers will soon be able to enjoy these services."

When it's expensive, people who want to make phone calls on the plane have to think about costs. Then the people who want to sleep on the flight will be miserable.