The global team set foot on the 6G R&D arena, but it is still in the initial stage of exploration.

　　As Wu Hequan, an academician of China Academy of Engineering, said, there is no end to human demand for industry and technology. When most people still lack a 5G mobile phone, the leading R&D troops of various countries have assembled in the 6G battlefield.

　　Recently, the news from the website of the Ministry of Science and Technology was screened. The Ministry of Science and Technology, together with the National 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, held a kick-off meeting for 6G technology research and development, and announced the establishment of a national 6G technology research and development promotion working group and an overall expert group.

　　However, as Damon, Vice Minister of Science and Technology, said: "At present, the global 6G technology research is still in the initial stage of exploration, the technical route is still unclear, and there is no unified definition of key indicators and application scenarios."

　　6G will not cover blind spots.

　　5G has been commercialized all over the world. According to the law that mobile communication will iterate every 10 years recognized by the industry, 6G will appear around 2030.

　　Yi Zhiling, chief scientist of China Mobile Research Institute, said: "The iteration of mobile communication technology is not solely determined by technology. At present, we don’t know when to deploy 6G, but the iteration time will be shorter and shorter."

　　Wang Xiaofei, a professor at the School of Computer Science and Technology of Tianjin University, said in an interview with the Science and Technology Daily reporter that unless 6G plays an active role in special core fields such as terahertz, aerospace, underwater, physical layer and basic materials, it is meaningless to only improve the speed.

　　According to the description of the world’s first 6G white paper ("Key Drivers and Research Challenges for 6G Ubiquitous Wireless Intelligence") issued by Oulu University in Finland, in addition to the significant improvement of transmission capacity, 6G wireless networks will realize seamless connection between the ground, satellites and airborne networks, instead of being trapped on the ground.

　　"We started the pre-research of 5G in 2011. At that time, 4G was still far from commercialization and was still in the stage of standard implementation." Yi Zhiling recalled that although there were no quantitative indicators and no clear demand for 5G, they already felt the lack of industrial chain, and later the work of 5G was basically implemented along the direction at that time.

　　This is the significance of "pre-researching, developing and using the first generation" in the communication industry. Although many ideas about 6G are still rambling, in order to establish future competitiveness, we must start in advance.

　　The digital world and the physical world have been further opened up.

　　When 6G deeply integrates the digital world with the physical world, many scenes that are still fantasy will become reality.

　　Most performance indicators of 6G will be 10 to 100 times higher than that of 5G, and the highest transmission rate can reach 1Tbps, which means that downloading a movie can be completed within 1 second, while the network delay of 0.1ms is basically imperceptible to human beings.

　　"It is conceivable that more and more things in the 6G era will have endogenous intelligence." Yi Zhiling said, "Now the application of 5G is mainly to connect entities and nodes without intelligence. In the future, maybe everyone has a virtual twin, maybe some of us will be virtualized, and it will be a new world. "

　　Research in the industry has outlined a variety of potential 6G application scenarios, and the augmented reality (XR) application, which combines virtual reality (VR), augmented reality (AR) and mixed reality (MR), is the most talked about.

　　The virtual things it creates in the real environment can change with people’s will, which can make geographically dispersed people feel like they are in the same space, and the equipment and senses are seamlessly connected, so that remote holography becomes a reality. As a result, distance education, collaborative design, telemedicine, telecommuting, advanced 3D simulation and training and national defense applications have a deeper imagination.

　　Yi Zhiling said: "5G will change the society, and 6G will bring the combination of the physical world and the virtual world. This trend is what everyone expects and thinks will happen. However, it is hard to say how large and to what extent it will develop in the next 5 to 10 years, and whether everyone has a digital twin on the cloud. Not only technology, but also morality and ethics. "

　　What is certain is that if all kinds of imaginations come true, we need a more powerful network, which is difficult for 5G to carry.

　　Related technologies need to be tackled by national groups.

　　After experiencing "1G blank, 2G following, 3G breakthrough, 4G parallel and 5G leading", China has made greater achievements in the 6G field, which is obviously not only the goal of the communication industry.

　　Nowadays, the United States, China, Japan, South Korea, Finland and other countries have all set foot on the 6G R&D track, and scientists are trying to find a clear development path for 6G. Zhong Zhangdui, a professor at Beijing Jiaotong University, stressed that the new generation of technical standards needs top-level design and concept definition. In the research and exploration stage, it is first necessary to find out what 6G is and where it comes from.

　　Wang Xiaofei believes that the core technology needs to invest a lot of money, which must be the national behavior of organizing a group, especially 6G. Many directions it aims at have strong strategic significance, and it must rise to the national strategy. He said that the pre-research of many basic cores may not land on 6G. Like the previous generations of mobile communication technology, many participants will be eliminated. Now there are few truly 5G core technologies in the world, and it will be even rarer by 6 G.

　　But if you don’t research and develop in advance, the next generation of standards will come out, and you may not even be able to make the previous generation of products.

　　Ziguang Zhanrui, who participated in the specific research work of the technical subgroup of the 6G technology research and development promotion working group, has been the first to announce that it will start the pre-research and reserve of 6G related technologies, explore the potential key technologies of 6G, such as terahertz communication, orbital angular momentum, very large-scale antenna system, very Qualcomm coding and decoding, and integrated communication network between heaven and earth, and formulate the development and promotion plan of 6G technology prototype.

　　It is understood that the Ministry of Science and Technology, together with relevant departments, will organize an overall expert group to systematically formulate the research and development plan for 6G technology, carry out pre-research on 6G technology, and explore possible technical directions. Through the system layout of 6G technology research and development, a series of basic theories, design methods and core technical problems in the field of mobile communication and information security are condensed and solved, and breakthroughs are made in basic research, key technologies, standards and specifications. (Science and Technology Daily reporter Liu Yan Cui Shuang)