The 5g era is coming. As the fifth generation mobile communication network, the most eye-catching advantage of 5g is faster speed. So when will 5g be popular in China? The three operators' 2019 pre-use time is officially determined.
It is reported that the maximum theoretical transmission speed of 5g network can reach tens of GB per second, hundreds of times faster than the existing 4G network. In the future, you can download the entire ultra-high quality movie on 5g network in less than one second.
Under the condition that 100m broadband is not widely used, 5g network with faster speed is worth looking forward to. However, 5g network still has some shortcomings in signal coverage. Because 5g network technology mainly uses UHF spectrum, which can provide higher data transmission rate, but the electromagnetic wave transmission distance in this frequency band is very short, and it is easy to be blocked by obstacles. In order to achieve better signal coverage of 5g network, operators need to build millions of small base stations and deploy them to every power pole, every building, every house, even every room.
Careful consumers will find that with the rapid growth of mobile Internet access, the number of mobile base stations will also increase. In 2G era, the number of base stations of operators is quite small. After 2G signal coverage is mature, it is basically a town that only needs 1-2 base stations to achieve seamless coverage. After entering the 3G era, the number of base stations of operators has increased dramatically, and five base stations in a township will also have a signal blind area. After the popularization of 4G network, we will find that several villages need a base station.
At present, 4G network license has been issued for more than three years, and there are still 4G network coverage problems in many areas. It can't be predicted that the signal coverage of 5g network is more difficult than that of 4G network. According to the plan of the Ministry of industry and information technology, large-scale test networking will be carried out in 2018, and 5g network will officially launch commercial services in 2020. Even so, the signal coverage of 5g network will still be hard injury after commercial use. In cities with high buildings, 5g signal will be worse.