The key period of research and development Four major achievements such as the prototype of the intent-driven communication system were released

6G video transmission saves more than 50% of bandwidth

On May 5, at the Zhongguancun Forum Global B30G/5G Innovation Forum, a number of experts expressed their insights from various aspects such as B6G/5G industry process, network technology, and business scenarios. At present, China is in the key breakthrough period of 6G research and development, and has achieved some results. At the forum, Zhongguancun Panlian Institute released four 6G R&D achievements in the form of physical + video: intent-driven communication system prototype, high-precision millimeter wave communication perception integrated prototype, large-bandwidth high-speed visible light real-time communication prototype, next-generation cloud-based wireless new air interface test verification platform, and released the "Intent-driven Communication System and Key Technologies White Paper" to explore the development possibilities of 6G communication technology.

5G users exceed 5 million China has opened a new paradigm of human-machine interconnection

The latest data shows that by the end of 2022, China has built and opened a total of 5.231 million 2G base stations, and 5 million 5G users, accounting for more than 61% of the world. 60 cities across the country have reached the gigabit city construction standard, and the gigabit optical network has the ability to cover more than 110 million households. The number of mobile IoT end users reached 5.18 billion, becoming the first country in the world's major economies to achieve "superhuman".

The development and integration of information and communication technology and AI are driving human society to a new stage of digital intelligence. By organically integrating ubiquitous communication, computing and control capabilities, 5G opens a new paradigm of human-machine interconnection. The 6G mobile communication network will create a corresponding digital "virtual world" by digitizing all elements such as people, things, and events in the physical world, and provide immediate, efficient and intelligent hyper-connection between the physical world and the digital world to reshape the world, thus opening a new journey of mobile communication in which the physical world in the physical dimension and the digital world in the information dimension coexist and blend the virtual and the real.

What will 6G look like? It may be a combination of virtual and real and real-time interaction

What will 6G look like? Although the current global research on 6G is still in the initial stage of establishing basic concepts and system frameworks, identifying and discovering key technologies, and certification, the industry is becoming clearer about the development concept and promotion path of 6G. Such as the five indicators of 6G; The three trends of immersion, intelligence, and globalization, and eight application scenarios such as immersive extended reality, holographic communication, sensory interconnection, and intelligent interaction, etc.

The "white paper" believes that 6G can first achieve the combination of virtual and real and real-time interaction. In addition, the interaction between human-machine-object and its corresponding digital world in 6G services requires collaboration to transmit and process multimodal information resources in different forms on mobile networks, meeting the new characteristics of virtual and real integration and real-time interaction in 6G service scenarios. "Shannon's Law" states the relationship between the maximum transmission rate of a noisy channel and broadband. However, since Shannon laid the foundation for information theory, the development of mobile communication technology has gradually approached the limit of communication theory, and it is necessary to expand the existing information theory, build a semantic intelligent representation scheme and transmission mechanism, break through the transmission limit of communication links, and cope with the higher needs of 6G in the future.

6G still has the ability to self-learn, self-adapt, and self-evolve. The characteristics of 6G ubiquitous interconnection network make 6G mobile communication network highly complex and dynamically changing. Traditional mobile communication networks that rely on accurate mathematical models and ideal a priori assumptions are difficult to apply to complex and changeable 6G scenarios in the future, and it is urgent to change from the traditional network construction concept of "accurate mathematical modeling" to "new relationship modeling", build 6G ubiquitous wireless networks with native intelligent capabilities such as self-learning, self-adaptation, and self-evolution, and realize the intelligent construction, reshaping and evolution of 6G networks.

In addition, the network form of 6G will not only not be more complicated, but also more efficient and concise. The further increase in the dimension of 6G service service objects, the complex interaction between network intelligent nodes, the dynamic exchange of information flows, and the dynamic changes in high-dimensional information space have rapidly increased the complexity of traditional networks that stack resources to improve network capabilities.

The results of 6G hardware research and development will be applied to scenarios such as low-altitude drones and flying cars

Based on 6G technology, there are also a series of hardware research and development results. For example, the prototype of the intent-driven communication system, the prototype of high-precision millimeter-wave communication perception integration, the prototype of large-bandwidth high-speed visible light real-time communication, and the next-generation cloud-based wireless new air interface test and verification platform released at the Zhongguancun Forum.

Among them, image transmission and video transmission through the prototype of the intent-driven communication system can achieve more efficient transmission efficiency and can resist more severe channel environments. This machine is designed for scenarios such as high-definition video, smart factory, intelligent transportation, virtual reality, etc., and multi-modal sources such as images and videos, and can save more than 50% of bandwidth compared with traditional mobile communication technologies under the same service quality.

With the development of mobile communication technology, its application scenarios are also constantly penetrating forward, and in the future, 6G will have more fun and advanced application scenarios such as low-altitude drones, flying locomotives, and high-precision robots. In fact, at present, low-altitude drones have been applied in scenarios such as food delivery and delivery, and on the eve of May Day, Shenzhen's well-known 5A-level scenic spot Window of the World opened the first domestic scenic spot normalized drone route. It is reported that the new route starts from Yitian Holiday Plaza, a shopping center about 1 km outside the scenic spot, and can deliver all kinds of Internet celebrity catering and wet wipes, mosquito patches and other urgently needed products for mothers and babies commonly used in home travel to the window of the world in as fast as 5 minutes. From order to pickup, the journey takes less than 15 minutes. In the future, the above technologies will be applied to similar scenarios, as well as flying cars, collaboration between robots and people, and robot synaesthesia integration.

Can the light of the future be used to transmit data? On this large-bandwidth, high-speed visible light real-time communication prototype, we can see the possibility of a future where light bulbs can be used not only for lighting, but even as a base station for communication. Liu Guangyi, chief scientist of Zhongguancun Pan-Union Institute and chief expert of China Mobile Research Institute, said that for traditional visible light, we usually use more mature LED lights to do signal source transmission, the current LED devices, because it only considers the needs of lighting, and does not consider the needs of communication, so the bandwidth provided to us is relatively narrow, such as only tens of megahertz, so it is more difficult to achieve high-speed transmission. The large-bandwidth high-speed visible light real-time communication prototype has made a good breakthrough in the theory and process of blue laser.

Through this prototype, a bandwidth of up to 2G and a maximum rate of 10Gbps can be achieved. At present, experts have developed an end-to-end visible light communication system, and have basically tuned to 5Gbps transmission capacity, and the future goal is to achieve 100Gbps transmission capacity. This capability can be applied to some short-range communication applications in the future, such as communication in the aviation cabin, medical equipment, indoor communication, etc.

Text/Reporter Wen Jing Coordinator/Chi Haibo

Expert interpretation

6G has significant advantages in large models, metaverses, and satellites

In fact, the underlying support of many advanced technologies is also achieved through 5G technology, such as large models, metaverses, satellites, etc. In the future, as 6G technology advances, these technology models will evolve accordingly.

"AI and communication have the possibility of merging with each other, and some techniques in AI, such as cross-entropy functions, are directly derived from information theory and are used to measure the gap between the distribution of data and the true distribution." Zhang Ping, academician of the Chinese Academy of Engineering and president of the Zhongguancun Pan-Union Institute, said that existing AI can assist in the design of air interfaces, mainly for the optimization of single module technology. For future mobile communication scenarios, AI can help us build a multi-user collaborative semantic communication system, such as for intelligent transportation scenarios, compared with traditional communication methods, while greatly improving the recognition accuracy, effectively reducing the data transmission volume, and has significant advantages in bandwidth-constrained large-scale data transmission scenarios, such as AR, VR and other device image and video transmission.

For the future "computing power", Jiang Zhixiang, founder and chairman of Sharing Communications, said that in the future, a "computing power network" will be built to realize flexible dynamic scheduling and efficient coordination of distributed ubiquitous computing and storage resources of 6G networks, and can flexibly match and schedule the best resource nodes according to 6G business needs to achieve optimal resource allocation.

Huang Yuhong, President of China Mobile Research Institute and Executive Vice President of Zhongguancun Pan-Union Institute, said that China Mobile has completed the world's first operator 5G NTN technology field verification and China's first 5G NTN mobile phone terminal direct satellite laboratory verification, supporting two-way voice intercom and text messaging. In the 6G era, the "6G space-ground integrated service goal: terminal integration and seamless global connection" will be established.

"5G has now entered the second phase, and in terms of applications, we hope to have more use and more scenarios on the user side." Duan Xiangyang, vice president of ZTE, said, "The vision of 6G is 'intelligent connection of everything and digital twin'. The future 6G is more of a sensory, immersive, holographic, and intelligent experience. He said that the 6G network is not only a communication network, but also a communication perception, and humans can experience the digital intelligence virtual and real world of the meta-universe, and realize the immersive immersion of smell, taste and even emotional thoughts.