6G is also an extension after 5G, that is, the sixth generation mobile communication standard, also known as the sixth generation mobile communication technology. The main promotion is the development of the Internet of Things. The 6G base station can access hundreds or even thousands of wireless connections at the same time, and its capacity can reach 1 times that of the 5G base station.
On March 19th, 219, the Federal Communications Commission (FCC) of the United States decided to open the "terahertz" spectrum for future 6G network services for innovators to carry out 6G technology experiments. On November 3rd, China announced the establishment of the National 6G Technology R&D Promotion Working Group and the General Expert Group, marking the official start of China's 6G technology R&D work.
6G network will be a fully connected world integrating terrestrial wireless and satellite communication. By integrating satellite communication into 6G mobile communication, global seamless coverage can be achieved, and network signals can reach any remote village, so that patients in deep mountainous areas can receive telemedicine and children can receive distance education. In addition, with the joint support of global positioning system, telecommunication satellite system, earth image satellite system and 6G ground network, the ground-air full coverage network can also help human beings to predict the weather and respond to natural disasters quickly. This is the 6G future. 6G communication technology is no longer a simple breakthrough in network capacity and transmission rate, but it is to narrow the digital divide and realize the "ultimate goal" of the Internet of Everything, which is the meaning of 6G.
On March 9, 218, Miao Wei, Minister of the Ministry of Industry and Information Technology, said that China had begun to study 6G. In addition to China and the United States, the European Union and Russia are also carrying out related work intensively.
Xiang Ligang, an observer of China's communication industry and CEO of Feixiang. com, further suggested that in addition to land communication coverage, underwater communication coverage is also expected to start in the 6G era and become a part of the whole network coverage system.
On November 3, 219, the Ministry of Science and Technology, together with the Development and Reform Commission, the Ministry of Education, the Ministry of Industry and Information Technology, the Chinese Academy of Sciences and the Natural Science Foundation of China, organized a kick-off meeting for 6G technology research and development in Beijing. The meeting announced the establishment of a national 6G technology research and development promotion working group and an overall expert group. Among them, the promotion working group is composed of relevant government departments, and its responsibility is to promote the implementation of 6G technology research and development; The overall expert group is composed of 37 experts from universities, research institutes and enterprises, and is mainly responsible for proposing suggestions and technical demonstrations on the research layout of 6G technology and providing advice and suggestions for major decisions.
THz band
6G will use THz band, and the density of 6G network will reach an unprecedented level. At that time, our surroundings will be full of small base stations. Terahertz band refers to 1GHz-1THz, which is a frequency band much higher than 5G. From communication 1G(.9GHz) to 4 G (above 4G(1.8GHZ), the frequency of wireless electromagnetic waves we use is increasing. Because the higher the frequency, the wider the bandwidth allowed to be allocated, and the greater the amount of data that can be transmitted per unit time, which is what we usually call "the network speed becomes faster." However, another main reason for the development of frequency bands to high places is that the resources of low frequency bands are limited. Just like a highway, no matter how wide it is, the number of vehicles it can accommodate is limited. When the road is not enough, vehicles will be blocked and unable to travel smoothly. At this time, it is necessary to consider developing another road.
Terahertz is called submillimeter in astronomy, and the stations of such observatories are generally high and dry, such as Antarctica and acatama Desert in Chile. "So, why do we talk about the" densification "of the network in the 6G era, and our surroundings will be full of small base stations? This involves the coverage of the base station, that is, the transmission distance of the base station signal. Generally speaking, there are many factors that affect the coverage of base stations, such as the frequency of signals, the transmission power of base stations, the height of base stations and the height of mobile terminals. As far as the frequency of the signal is concerned, the higher the frequency, the shorter the wavelength, so the diffraction ability of the signal (also called diffraction) meets an obstacle in the process of electromagnetic wave propagation. When the size of this obstacle is close to the wavelength of electromagnetic wave, electromagnetic wave can diffract from the edge of the object.
As a high-generation technology of 5G, there will be more and more technical indicators of 6G, and new indicators will form 6G together with data rate, number of connections, delay, energy efficiency and other indicators, and metamaterial technologies such as quantum and terahertz may also be used. It is understood that 6G should build a network to realize the integrated communication of air, sky, ground and sea, and the data transmission rate is 1 times faster than that of 5G, and everything can be simulated.
China announced to the world that the launch of the world's first 6G satellite was successful! It is a hundred times faster than 5G. This important news was officially issued on November 6th. The world's first 6G experimental satellite, named University of Electronic Science and Technology of China, was successfully launched at the satellite launch center in Taiyuan. I believe many people are excited when they hear this news.
Many people are thinking, I haven't even used 5G, so I just entered the 6G era. However, the definition of 6G is not so simple. We can regard 6G as 5G+, which is to truly combine satellite communication in space with ground communication, realize integration and globalization, and move the whole Internet from the earth to space.
the 6G technology relies on terahertz communication, which has been greatly improved compared with the previous radio communication, laser communication, etc. No matter the security, propagation speed, penetration, etc., it's hard to imagine how horrible it is that the network speed of 5G is so fast now, so the network of 6G is hundreds of times faster than that of 5G.
Since the beginning of 5G technology, we in China have been firmly in the hands, and it has been proved how important it is to hold the technology. As a pioneer of 6G technology, China will definitely have a great impact on the whole world.
Excluding Chinese enterprises, the United States has formed a 6G alliance.
The United States is also taking the lead in 6G research and development. According to foreign media reports, the American Telecommunications Industry Association has launched the 6G Alliance, which is led by the American Telecommunications Industry Solutions Alliance (ATIS). Qualcomm, Microsoft, Facebook, AT&; T and others are the founding members of the alliance, Samsung and Nokia have also become its members, and Apple and Google have also joined recently.
the market scale of 6G far exceeds that of 5G
from the perspective of communication technology development, technologies are gradually accumulated, and high-generation technologies are based on the development of the previous generation technologies, and the level of 5G also greatly affects the research and development process of 6g technologies.
5G will be a complete social intelligence system rather than a simple communication technology, and 6G will solve ubiquitous computing, so it will be very difficult to bypass 5G and the possibility of success will be very small. Therefore, relying on its advantages in the construction of 5G, China is not backward at present, and it is likely to lead the global 6G technology.
the application scenarios of p>6G planning are far beyond 5G, and the future market scale is also much larger than 5G market. According to the forecast of China Mobile, by 225, the domestic market scale of 5G will be nearly 1 trillion yuan, and the market scale of 6G will be even larger after it is officially commercialized. Of course, it will take a long time for 6G to form a network. According to Samsung's white paper, the completion and commercialization of 6G standard may be realized as early as 228, and large-scale commercialization may be realized around 23.