Some notes on the next generation of mobile Internet 5G

First of all, the
current 4G is no longer slower than optical fiber, but the capacity is not enough, and it will be slower if there are too many people. In the future, the improvement of 5G will focus on the number of mobile phones, one million connections per square kilometer, and a traffic density of tens of Tbps, which should be able to satisfy most people accessing the Internet at the same time. The other is the Internet of Things and high-speed rail. As for the speed, there will not be much perceptible difference compared to the current 4G.
In the 5G era, it is possible to have no traffic, but it is possible to limit the speed. After all, the speed of the mega fiber is also limited. If the speed is not limited, who will use the fiber. At that time, however, fiber optic may not have the speed limit as it is now.
The second is that the connection speed
is not meaningful for devices such as mobile phones. The performance of mobile phones is not so high, and there is no corresponding application. 5G claims to be able to reach 100Mbps to 1Gbps, which is quite advanced. So the most critical capability of 5G is not how fast it can be.
The third is the low latency
of 1ms, which is the level of optical fiber and LAN, so that the response to the Internet will be faster, and the other is the Internet of Things with real-time business requirements, such as the C-V2X Internet of Vehicles.
The fourth is the Internet of Things
C-V2X, eMTC, NB-IoT
C-V2X for the Internet
of Vehicles eMTC rate (1Mbps) is between 2G and 3G, the power consumption is much lower, and the coverage is wider. In fact, it is a better replacement for 2G and 3G for some low-speed applications. It is estimated that existing pos machines, locators, smart watches, and elderly machines will be used and other IoT applications with speed requirements. 2G, 3G clear frequency is a matter of time, but not all devices need high-speed network access.
The NB-IoT rate (more than 200 Kbps) is equivalent to 2G, which has lower power consumption and wider coverage than eMTC. For the emerging Internet of Things field.
The fifth is
that you can make phone calls and surf the Internet comfortably on the high-speed rail.
According to the plan, commercial trials will begin after 2018, and official commercial use will begin in 2020. However, 5G is not a one-step process. At first, it is only a reduced version of 5G, and it will not achieve all the goals of 5G. It is necessary to achieve all the set 5G goals. It will take many years to formally apply it. According to habit, the name of 5.5G and 5G+ will appear. In fact, this is the real 5G, and the 5G at the beginning is only quasi-5G.
If there is 6G, it will compete with the current fiber access. In fact, 5G (full-featured version) already has some capabilities in this regard.