On March 24, the second "Global 6G Technology Conference" was successfully concluded. During the three-day conference, the conference held a total of 1 conference report, 9 thematic forums, and 2 international roundtable discussions.
Nearly 100 authoritative experts from universities and scientific research institutions, telecommunications operators, equipment manufacturers and other countries in the United States, britain, Canada, Finland, Sweden, Japan, South Korea, Singapore, Greece, Saudi Arabia and other countries around the world focused on 6G millimeter wave and terahertz technology, 6G vision and technical requirements, 6G spectrum sharing coexistence technology, 6G network architecture and key technologies, 6G wireless coverage expansion technology, 6G wireless air interface transmission technology, 6G wireless network security architecture key, space-earth fusion intelligent networking technology, 6G full-scenario on-demand service key technologies and other topics to carry out comprehensive exchanges and in-depth discussions.
Xiang Libin, vice minister of the Ministry of Science and Technology, said in his speech at the opening ceremony of the conference that with the large-scale commercial use of 5G networks, the strategic layout of global research and development for 6G has been fully launched, and 6G mobile communications are currently in the early stage of incubation, the vision needs have not yet been determined, key technologies have not formed an industry consensus, and related research is in the stage of a hundred schools of contention.
6G technology academic research to the industry vision needs a process, 2022 is a key year of this process, today we discuss the new concept of 6G, new technology, new ideas related to the face of tomorrow's mobile communications, and thus change the face of human society.
He pointed out that China welcomes and actively supports international cooperation in the field of 6G, and suggests that countries give full play to their respective advantages, expand cooperation space around the key points of 6G research, build a bridge of collaborative innovation, and jointly promote the establishment of a global 6G ecosystem, laying a good foundation for the future integration and development of related industries, mutual benefit and win-win results.
Liu Yulin, a first-level inspector of the Department of Information and Communication Development of the Ministry of Industry and Information Technology, pointed out in his speech at the opening ceremony of the conference that the current 6G development is in a critical period of vision and demand, which requires all parties to work together to form a joint force.
The first is to focus on the research of vision needs and form a broader consensus; the second is to accelerate key technological innovations and lay the foundation for 6G development technology; the third is to deepen international exchanges and cooperation and maintain global unified 6G standards; the fourth is to coordinate 5G and 6G development and fully release the potential of 5G development.
Wu Hequan, academician of the Chinese Academy of Engineering and chairman of the Future Mobile Communication Forum, put forward 10 points of thinking on 6G research in his keynote speech, mainly including:
Wu
Ultra-broadband is difficult to become the highlight of 6G; metacosm is difficult to become the fulcrum of 6G; ultra-broadband and carbon reduction should find a balance point; industry application is the focus of 6G research; artificial intelligence in the application of 6G foothold; low-frequency band mining should be the focus of 6G research; the difficulty of star-land integration; the integration of air, earth and sea communication is a selling point of 6G; low-cost intelligent and simple network is the pain point of 6G research; innovation is the basis of 6G research.
Academician of the Chinese Academy of Engineering
Wu Hequan, Chairman of the Future Mobile Communication Forum
When expounding the view that "the metaverse is difficult to become the fulcrum of 6G", Wu Hequan said: "The metaverse needs 6G, and now 5G cannot support the experience rate that users need, but the business model of the metacosm has not changed compared to social media and AR/VR, and it is a niche market, not the just need for 6G." ”
At the same time, Wu Hequan stressed that "ToB should be the focus of 6G research, and it is necessary to pay more attention to the requirements of low latency and certainty, put forward innovative solutions in architecture and management, and also divide the frequency for industrial applications." ”
Zhang Ping, an academician of the Chinese Academy of Engineering and a professor at Beijing University of Posts and Telecommunications, said that the communication indicators of 6G will be 10-100 times higher than that of 5G, and will achieve high-precision positioning at the centimeter level.
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1G-4G pursues a simple communication rate, and 5G puts forward requirements for large-scale communication and reliability and latency, which is an improvement of the surface;
In the future, 6G is the improvement of the body, which will expand the communication space, realize the integration of ground and satellite communications, the integration of air, space, and sea, and 6G will move towards a ubiquitous wisdom and simple network that is fully integrated, virtually integrated, and intelligent emerging.
You Xiaohu, a professor at Southeast University and chief scientist of Purple Mountain Laboratory, said in his keynote speech that in the 6G era, the key indicator capabilities of the original three major application scenarios of 5G will be improved by an order of magnitude, and new application scenarios such as synaesthesia computer-control integration, space-earth integration, and federal AI will be generated, and some new key indicator systems may be derived, including security, coverage characteristics, and network intelligence.
He also systematically introduced the 6G TKu experimental platform and key technological progress of Purple Mountain Laboratory for Tbps-class transmission, Kbps/Hz-level spectral efficiency and uS-class delay.
During this global 6G technology conference, Yi Zhiling, chief scientist of China Mobile Research Institute and chairman of the 5G/6G SIG of the Future Mobile Communication Forum, and Hong Wei, professor of Southeast University, director of the State Key Laboratory of Millimeter Wave, and chairman of the 5G Microwave Millimeter Wave Working Group of the Future Mobile Communication Forum, released 13 white papers on behalf of the Future Mobile Communication Forum, defining 6G-related technology concepts, indicators and capability extensions with a forward-looking vision of the industry.
Among them, the overall white paper "6G Network 2.0 under ICDT Convergence" and 9 special white papers were released on the 6G topic, covering digital twins, next-generation protocol stack 4.0, terahertz, multiple access, intelligent hypersurface, zero power consumption, quantum information, terminal friendliness, and intelligent rail transit.
The white paper "5G/6G Millimeter Wave Test Technology" was released in the millimeter wave aspect, and the "5G millimeter wave enables 8K video production" and "Future-oriented mobile broadband audio and video transmission protocol - status quo and challenge" white paper were released in the mobile ultra-high definition video.
Bi Qi, chief expert of China Telecom, introduced the advantages of P-RAN technology in solving the problem of high-frequency networking coverage at the global 6G technology conference:
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According to the existing relevant monthly traffic data per person, it is estimated that in the 6G era, the daily traffic usage of each user may reach 130GB, compared with the current annual traffic. The carrying capacity of the network will face greater challenges.
In this regard, the frequency band used by the cellular network is likely to need to expand to the high frequency, but the network in the high frequency band will also face the problem of reducing the coverage radius, while facing the challenge of increasing the cost of base stations, and the coverage of 6G is likely to become a roadblock to network performance.
China Telecom Chief Expert Bi Qi
Yi Zhiling, chief scientist of China Mobile Research Institute and chairman of the 5G/6G SIG Working Group of the Future Mobile Communication Forum, said that the next 3-5 years will become a window period for potential key technologies of 6G, which is the key to seizing the commanding heights of technology in the field of communications and cultivating the industrial foundation.
For example, unmanned logistics based on unmanned vehicles and drones, digital twin workshops as a new form of design, manufacturing and maintenance system, immersive interaction-based remote operation and quality inspection and many other new formats... All 6G and manufacturing industry need to be designed synchronously, industrial maturity alignment, cross-domain knowledge fusion, and embedded distributed intelligence as the foothold to achieve the re-upgrading of the industrial Internet.
Chief Scientist of China Mobile Research Institute, Future Mobile Communication Forum
Chair of the 5G/6G SIG Working Group, Zhiling Yi
At the "6G Wireless Coverage Extension Technology" roundtable forum, Huang Yuhong, president of China Mobile Research Institute, said that 6G will simultaneously expand wireless coverage at high speed, low latency, high reliability and high density, facing great challenges, and need to consider multi-band converged coverage technology; the next 3-5 years will be a strategic window period for 6G key technology breakthroughs, and the industry is continuing to explore the development process and path of 6G.
She believes that 6G research should focus on 6G top-level design and architecture research, pay attention to green, safe and sustainable development, pay attention to cross-border integration and innovation, and take global unified standards as the common direction of global industry efforts.
Yi Zhiling, chief scientist of China Mobile Research Institute, IEEE Fellow, presided over the 6G Mobile Network and Application Roundtable Forum, and released a series of 6G white papers on behalf of the 5G/6G Working Group of the Future Mobile Communication Forum, she said that 6G will be an intelligent network where communication networks, perception networks and computing networks are integrated, with end-to-end information processing capabilities, and can provide intelligent, virtualized and other emerging information services and applications.
Huang Yuhong, president of China Mobile Research Institute
At the roundtable forum on "6G Spectrum Sharing and Coexistence Technology", Tang Xiongyan, vice president and chief scientist of China Unicom Research Institute, pointed out that the essential characteristics of 6G networks still need to be defined, it should be the synthesis of multiple types of technologies, intelligence and integration are keywords, and at the same time, network architecture is still the key to 6G innovation.
6G continues the application dream that 5G has not yet realized, and the application will be further extended and expanded: AR/VR, holographic communication, meta-universe, autonomous driving, twin factories, etc.
Although the specific application is difficult to fully predict, the emerging application scenarios of 6G put forward new requirements for the network, and the demand for the network will inevitably increase further: including further enhancement of 5G network capabilities (such as the improvement of speed, latency, capacity, and spectral efficiency), as well as new thinking on new network capacity building and measurement.
At the roundtable forum on "6G Network Architecture and Key Technologies", Liu Yunjie, academician of the Chinese Academy of Engineering, director and chief scientist of Purple Mountain Laboratory, said that the future of new services requires the network to provide massive connections, high-performance end-to-end transmission delay, in-network computing cache and flexible access processing capabilities, and urgently needs to make changes in the network architecture.
At the "6G Vision and Technology Requirements" roundtable forum, Xu Han, head of R&D at Qualcomm China, specifically emphasized the importance of artificial intelligence technology when talking about the current main research direction of 6G, and said that through changes in communication structure, artificial intelligence can be supported by a very flexible architecture, and artificial intelligence algorithms will also be widely used in future communication systems.
Qualcomm China R&D leader Xu Han
As an important supporting technology for intelligent network infrastructure after 2030, the traditional pursuit of coverage, bandwidth, latency and other single technical indicators jump is no longer suitable, 6G technology will explore and open up a new paradigm of multi-objective sustainable and coordinated development such as technical performance, cost input, energy consumption, safety and reliability, and sustained efficiency.
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