5G: I want the horses to run fast but also want the horses to eat less grass
Human society has entered a highly efficient information age, and wireless mobile communication technology is increasingly favored by people for its convenience of access.
“You can’t live without the Internet at home, and you can’t go out without your mobile phone” has become a common feeling among many people.
Data services drive the explosive growth of demand in all aspects of future mobile communication systems, which brings huge challenges to future wireless mobile communication systems in terms of technology, frequency and operation.
As the evolution and improvement of 4G, the development of 5G has attracted much attention.
The iconic capability indicator of 5G is "Gbps user experience rate", which is simply "high speed".
Just as increasing the number of lanes is the most direct and effective way to increase the maximum traffic volume, increasing bandwidth is the most direct and effective way to increase the speed.
The demand for high speeds forces the channel bandwidth to become wider and wider, from the bandwidth of a few telephone lines to hundreds. If the hundreds are not enough, they will be replaced with coaxial cables. If the cable bandwidth is not enough, they will be replaced with coaxial cables. The bandwidth of optical fiber and wired communications is increasing from generation to generation.
How does the bandwidth of the wireless channel used for mobile phone communication increase? The core method is to use higher frequency bands.
4G used ultra-high frequency bands before, and 5G will have to develop into ultra-high frequency or even higher frequency bands.
However, the current price of wireless 4G data traffic of operators remains high, causing many users to be afraid to use it more.
On the other hand, it is very inconvenient to surf the Internet at home and work and check hot spots everywhere.
Looking at wireless communication forums and forums, it is not difficult to find that the general public may not be concerned about 5G technology itself, but what the 5G network will bring us: Will 5G be expensive? Does 5G consume data very quickly? Can you connect to 5G in remote places? …These are people’s biggest concerns and must be addressed before 5G can be put into operation.
On November 2 last year, the World Radiocommunication Conference was held. The International Telecommunications Union passed a resolution, officially determining the legal name of 5G as "IMT-2020" and setting a path for the development of "5G" mobile communication technology standards. Figure, standard research and development work was officially launched in 2016, 5G technical specifications and standard drafts were completed at the end of 2019, and commercial deployment was officially launched in 2020.
Since then, the goals, process and timetable of 5G development have finally been clearly planned.
The 5G vision also requires the determination of relevant standards. However, the current 5G standards are still blank, so that countries are actively researching and advancing to compete for the "commanding heights" of industry and technology.
Whoever goes faster and better in 5G research will be able to take the lead in future market competition.
Therefore, 5G research and development is progressing asIn full swing.
Recently, my country's 5G technology research and development tests have also been officially launched. The Ministry of Industry and Information Technology specified that my country's 5G tests will be implemented in two steps, namely technology research and development tests (2015 to 2018). ) and product development trials (2018 to 2020).
Currently, it is mainly oriented towards technology research and development testing, which is divided into three stages: key technology verification stage (2015.9 to 2016.9), technical solution verification stage (2016.6 to 2017.9), and system verification stage (2017.6 to 2018.10).
This shows that our country wants to be a leader in the formulation of 5G standards, not a follower.
Under the almost demanding requirements of future mobile communications, 5G, a new horse, is expected to run fast and eat less. Grass expectations.
