The recent controversy over 5G starts with the 2G network.
2G to 2.75G can basically reach the level of 100K, then there is no problem in accepting mail, etc., corresponding to business people from scratch, etc., indeed many people need this, when the rise of a BlackBerry mobile phone is also for the convenience of users to receive mail.
When 3G comes, although it can rise to the M level, one is that the data cost is still too high, not suitable for downloading a lot of data, and after the real cost falls, you can't see a lot of things in real time. If older people remember that nokia and Motorola's mobile phones at that time, the screen is small, the CPU, memory, and flash memory are small, so that even if you have images, videos, your phone can not support. And although 3G is much larger than the data capacity of 2G, but overall, he needs more bandwidth, due to the problem of the Internet bubble, so that at that time for 3G operators spent too much money, operators in 3G cost is too high, 3G tariffs have not been able to come down. The fact that tariffs cannot be reduced makes ordinary people less likely to use mobile networks.
When it comes to 4G, one is the technical improvement of the display screen to make the large-screen mobile phone appear, and the other is the improvement of chip technology so that the CPU of the mobile phone can effectively process multimedia files like 586, while the system is improved, and the improvement of the Apple and Android mobile phone systems makes a large number of software available.
The controversy over 5G now focuses on two main points: high comprehensive cost and few application scenarios.
Relative to the bandwidth growth of 1G to 5G, mainly bandwidth growth, 2G, 3G only a few MHz spectrum is enough, 4G to tens of MM, and 5G even to hundreds of MHz. This makes 5G develop to higher and higher frequencies, and the higher the frequency, the smaller the coverage, and the larger the base station required for the same area. The smaller the coverage area of the base station, coupled with the effect of antenna MIMO, the cost of power consumption and other costs increases rapidly. The equipment that 5G hopes for cannot be promoted on a large scale because of performance problems. From a purely technical point of view, it may not be until 2022 to 2025 that there may be a truly 5G mature device.
Radical South Korea on 5G roads
According to the Ministry of Science, Technology, Information and Communications, as of January 31, 2021, the number of 5G users in South Korea is approaching 13 million. This means that one out of four South Koreans uses a 5G network.
China's 5G strategy: moderately ahead of its time
Compared with South Korea's penetration rate of nearly 25%, there are many mainlanders and are still in the 5G introduction period. Different from South Korea's use of 4G and 5G networking for commercial use, the mainland uses 5G independent networking to achieve commercialization, with higher technical requirements and a more stable and clear development path.
5G TV boxes will be released as soon as this year
At present, the market flaunts 5G TV boxes with Huawei 5G TV boxes and Skyworth 5G boxes, but it only supports 5G wifi frequencies, not like 5G mobile phones, the real sense of the 5G network, has not yet reached the stage of real mature commercialization. At present, the more mature in this track is the Tencent Aurora CPE set-top box. The mature 5G TV box still needs to wait for the 5G application based on high-definition video, synthesizing the information of major manufacturers, and the fastest specific commercial is expected to be born in early 2022.