5G is not yet widespread and 6G is on the way

2022-05-26 0 By

Xinhua Finance Nanjing, March 30 (reporter Zhu Cheng) future network construction is the focus of the world’s major countries wrestling.China is leading the world in 5G research and development, application and construction, and attention is focused on whether China will continue to lead in the 6G era.Recently, the reporter interviewed a number of industry insiders to understand that the next 3-5 years will be the key period of 6G technology research and development, there is an urgent need to accelerate breakthroughs in network architecture reconstruction, key application potential, reduce power consumption, and improve security.With the large-scale commercial use of 5G network, the global strategic layout of 6G research and development has been in full swing. At present, 6G mobile communication is in its infancy. What kind of capabilities does 6G have?What changes will 5G bring?Opinions vary.However, the reporter found in the interview, the industry has some consensus on the vision of 6G, concentrated in the larger bandwidth, wider coverage and more intelligent three aspects.The speed increase is almost the standard part of every generation of mobile network upgrade.A number of industry insiders said that in the 6G era, new technologies represented by millimeter wave and terahertz will support the further upgrade of bandwidth. The download speed of 6G May reach 1TB per second, 100 times faster than 5G, which will further support the application of telemedicine and remote driving technologies.Greater coverage is also an important feature of the 6G.”Mobile communication coverage on the earth’s surface is only about six percent.The 6G network will use the satellite-built space-based network and the traditional ground-based mobile communication network to build an integrated network covering the sky, earth and sea.”Wu Hequan, an academician of the Chinese Academy of Engineering.Not only will it cover more ground, but 6G will push the “Internet of everything” to a new level.”In the 6G era, the number of connected machines will increase, which is estimated to be 60 times the world’s population.”Samsung Electronics senior director Son Sung-jun said.A number of industry insiders said that with the large bandwidth capability brought by 6G, the current hot concept of the “meta-universe” or speed up to reality.”In the future, holographic interactions that combine vision, sound and touch will lead to more immersive app experiences, and possibly even our own digital twin that will monitor our physical condition in real time.”Cui Chunfeng, director of the Green Communication Research Center at China Mobile Communications Research Institute, said.Faster and wider networks mean huge amounts of data are stored and run, requiring smarter brains to work together.”Ai will connect distributed agents and interact parameters.At the same time, AI will also improve network automation and allocate network resources according to different application scenarios, thus greatly reducing operational costs.”Huawei wireless technology laboratory technology expert Wang Jun said.The smarter web is also about how it handles information.A number of industry insiders said that in the past information transmission is based on people’s vision, hearing and other coding, decoding, the future or will appear to the machine as the object of watching or listening to the object of the new algorithm, which will make computing and network deep integration, the network itself has the ability to sense knowable, to achieve wisdom in all.Zhang Ping, an academician of the Chinese Academy of Engineering and a professor at Beijing University of Posts and Telecommunications, believes that in the 6G era, digital twin and ubiquitous wisdom will promote the combination of virtual and reality and the emergence of wisdom. “4G will change life, 5G will reform society, and 6G will change the world.”6G’s vision is great, but the road to realization is fraught with difficulties.The reporter sorted out a number of industry views found that, in addition to millimeter wave, terahertz, air, MIMO (more in more out) and other key technology research and development, 6G technology must cross the four thresholds.One is the reconfiguration of network architecture.From 2G to 5G, the cellular network architecture constructed by multiple base stations is adopted, which is difficult to adapt to the requirements of air, ground and sea integrated network transmission in the 6G era.At the same time, due to the characteristics of high transmission rate and low delay of 6G network, the problem of information “packet loss” existing in the traditional TCP/IP network is prominent, which urgently needs to be solved through the reconstruction of network architecture., vice President of the institute of China unicom, the chief scientist Tang Xiongyan think that Moore’s law to promote the development of information and communication technology industry meet the bottleneck, shannon limit is approaching, basic science and material has not been a revolutionary breakthrough and innovation network architecture to solve the technical challenges and promote information communication industry the key to sustainable development.”Major network innovations in the 5G era are embodied in the core network servitization architecture and the wireless access network centralized unit/distributed unit separation architecture.In the absence of a revolutionary breakthrough in wireless transmission technology, network architecture will remain the key to 6G innovation.”The second is the mining of network application scenarios.From 2G to 4G, network broadcast and other applications were born.China leads the world in 5G network construction, but 5G has not yet spawned phenomenon-level applications such as wechat and Douyin, which many industry insiders believe is related to the technical characteristics of 5G.”The industrial Internet is seen as the focus of 5G applications, but ‘To B’ applications require large uplink rates, low latency and high reliability, which 5G does not focus on.”Wu believes that “To B” applications should be the focus of 6G research, and operators should distinguish “To B” applications from “To C (consumer-facing)” applications based on dedicated frequencies.A number of industry insiders said that network applications will determine the benefits of operators and ultimately affect the sustainable development of the entire network.”While millimeter wave and terahertz technologies bring large bandwidth, they also have the problems of small coverage of a single base station and transmission loss.You need to consider performance, cost and other factors to improve commercial value.”Zte Wireless Research Institute radio frequency system senior engineer Peng Lin said.The third is the low power problem under the target of “dual carbon”.Data showed that carbon emissions from China’s communications network accounted for 3.5 percent of the country’s total in 2020, when 5G construction was just starting.According to Wu hequan and other experts, the power consumption of 5G base stations is twice that of 4G ones.The 6G frequency band is higher, the cellular is more dense, and the energy consumption is greater than 5G. Carbon reduction will be the difficulty of 6G research.Industry insiders generally believe that under the existing network architecture, there is a ceiling for energy saving and carbon reduction of 6G technology, and it is urgent to clarify standards and make breakthroughs in infrastructure.The fourth is information security.With the deep integration of virtual world and real world, the impact of network security issues has attracted much attention.6G network carries massive data transmission and processing, once stolen use, tampering, will have a great impact.Sun Shaohui, deputy general manager of Citic Mobile Communications Technology Co., LTD., believes that the 6G network security architecture will be completely different from the current one, and it needs to adopt the form of “flexible deployment” to meet the needs of different application scenarios.Cui believes that compared with the “external” network security system in the past, the intelligent ubiquitousness of 6G network requires the network to have the endogenous security capability, which needs the help of artificial intelligence and other technologies.The reporter found in the interview, industry insiders generally believe that 6G technology will have the ability of commercial operation around 2030.However, a number of industry insiders also believe that the development and construction of 6G technology should not be rushed, and it needs to be steadily promoted gradually.Yang Fengyi, an expert at the Research institute of China Telecom Co., Ltd. believes that the current network system construction has serious technology surplus, and the main reason is that the application can not keep up.”We lose touch with reality by moving our vision of the future to today too early.”Wu hequan believes that many basic technologies in 5G network are derived from the theoretical basis more than a decade ago.Similar fundamental innovations are sorely lacking in 6G.Many interviewees said that the application of 5G network is the premise of 6G research. While promoting 6G research and development, all parties should pay attention to exploring the market from 5G application and using 5G to test new technologies.Ai Bo, a professor at Beijing Jiaotong University, believes that the 5G era already has millimeter wave, edge computing, edge node and other technologies, which can accumulate experience for the future network layout of high-speed mobile scenarios such as high-speed railway in the 6G era.It is worth mentioning that in addition to technological innovation, innovation in operation management can not be ignored.A number of industry insiders said that in the 6G era, the traditional base-station centered coverage mode or change to user-centered coverage mode, which will bring new challenges to network operation and management.”Satellite orbit frequency resources are limited, it is impossible for every operator to build their own space-based Internet, which involves resource scheduling needs to be realized across operators.”Wu Hequan believes that the intelligent simple network with simple architecture, convenient operation and maintenance, cloud network coordination, intelligent and open, safe and reliable and low cost as the goal will be an important direction of network technology innovation in the future.Statement: Xinhua Finance is a national financial information platform contracted by Xinhua News Agency.Under no circumstances does the information published on this platform constitute investment advice.