Academicians of the Chinese Academy of Sciences and Chinese Academy of Sciences said that we should not be paralyzed by 6G. Why is 6G so important to us?

's recent big data technology dissemination and application summit forum, Li Deren, academician of the two academies, said in a keynote speech, "5G can be widely used in smart cities, autonomous driving, telemedicine, smart grid and other fields. We can use video, VR, AR, industrial Internet, Internet of Things, etc. to create new business models."

At the same time, Li Deren also said that we must not be paralyzed by 6G. What is 6G? Why is it so important to us?

What is 6G

? We know that today's hot 5G is the fifth-generation communication technology. There are two main advantages: one is the fast transmission rate, up to 10Gbit/s, which is 100 times faster than the previous 4G, and even worse than the current wired Internet. Be fast; another network has low latency (fast response time), less than 1 millisecond, and 4G is 30-70 milliseconds. So what is 6G mentioned by Academician Li?

The so-called 6G, the sixth-generation mobile communication technology, has a faster transmission speed, 100 times faster than 5G, and lower network latency, from milliseconds to microseconds. Therefore, some experts say that 6G can provide real meaning for mobile users All-weather service information service covering global land and sea.

6G Domestic current situation

According to public information, as early as March 9, 2018, the Minister of Industry and Information Technology Miao Wei stated that China had already begun to study 6G. On November 3, 2019, our country formally established the 6G technology research and development promotion working group and the national 6G technology research and development overall expert group. At the same time, the two major operators China Unicom and China Telecom stated that they have launched 6G related technology research.

On May 31, 2020, Huawei founder Ren Zheng informally disclosed that Huawei is already conducting 6G research. He said, “We are also the world leader in 6G research, but we judge that 6G will not be put into use until ten years later.” 2020 In November, Beijing Post's 6G project received key special funding from the 2020 National Key R&D Program, indicating that the state is increasing its investment in 6G. Although

6G technology has been proposed for a short time, all parties are full of expectations for its development. The main development directions are:

• multi-network integration: the Internet, mobile network formed by low-orbit and high-orbit satellites in the sky, and the ground The integration of mobile networks realizes ubiquitous high-speed mobile communications by land, sea and air, and truly seamless connections.

• frequency band span: that is, from the current 5G millimeter wave band to the 6G terahertz frequency band.
• new antenna technology: Because the terahertz band requires more antennas than millimeter waves, it is necessary to break through the antenna barriers through double iterative upgrades of materials and technologies.

• Full-duplex technology: Through the full-duplex technology, the traditional duplex mechanism is used to remove the restrictions on the use of the transceiver spectrum resources and further improve the spectrum efficiency.
• Spectrum Sharing Technology: Through the intelligent dynamic spectrum sharing technology, the existing spectrum resources are fully utilized to realize the open source and reduction of resources.

The development of 6G is of great significance

As Academician Li mentioned, 5G only covers land, and 70% of the earth is ocean, so 5G can actually only cover 6% of the earth’s surface. In the future, 6G will seamlessly connect land, sea and air to achieve real global high-speed mobile communications, allowing network signals to reach any corner of the world, allowing patients to receive telemedicine on the spot, allowing children to receive remote education, so that everyone can do Work for any company in the world... and finally make the earth a veritable global village.

At present, although our 5G is ahead on the ground, the 6G of the United States is ahead of us, and the United States has formed a 6G alliance that excludes Chinese companies. It is necessary for us to integrate domestic resources and introduce integration Advanced technology in other regions to build our own 6G alliance.

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