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[XGNews]: Which route should b5g / 6G antenna system evolve and innovate? Fitee Forum

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The following is the [XGNews]: Which route should b5g / 6G antenna system evolve and innovate? Fitee Forum recommended by xgapn.com.

News on January 15 (shuiyi) in recent years, with the promotion of the fifth generation mobile communication (5g) international standard and the issuance of 5g license, 5g has entered a critical period of base station and terminal product testing and maturity. At the same time, the evolution of mobile communication to the post 5g and the sixth generation mobile communication system (6g) has gradually become a hot area of academic and industrial attention.

In order to promote academic exchanges in the field of information and electronic engineering, improve the level of antenna and radio frequency technology in China, and promote the development of antenna system industry in China, the information and Electronic Engineering Department of Chinese Academy of engineering and China Society of communications jointly held the 3rd “information and electronic engineering frontier Forum – post 5g and 6G antenna system technology evolution and innovation”. The forum is jointly organized by the Journal of Chinese Academy of engineering and frontiers of Information Technology & Electronic Engineering (fitee), Xi’an University of Electronic Science and technology, Key Laboratory of antenna and microwave technology, and antenna system industry alliance.

Antenna system is an important part of mobile communication system. In order to meet the requirements of higher access rate, lower access delay, wider and deeper communication coverage in the later 5g and 6G systems, the future antenna system urgently needs continuous evolution and innovation in structural design, microwave computing, new material applications, etc., so as to solve the problems of larger scale, higher frequency band, larger bandwidth, lower power and lower cost In order to accelerate its industrial application and commercialization process, we should master the new methods of antenna propagation characteristics and testing.

Duan Baoyan, academician of Chinese Academy of engineering and chairman of antenna system industry alliance

Zhang Yanchuan, vice president and Secretary General of China Communication Society

In this context, the information and electronic engineering frontier forum of Chinese Academy of engineering focuses on “technology evolution and innovation of post 5g and 6G antenna systems”, and conducts in-depth discussion on the basic theory, key common technologies and industrial applications of post 5g and 6G antenna systems. Duan Baoyan, academician of information and Electronic Engineering Department of Chinese Academy of engineering, Zhang Yanchuan, vice president and Secretary General of China Society of communication, and Professor Lu Dongming, President of Zhejiang University Press, delivered speeches.

Cui Tiejun, academician of Chinese Academy of Sciences

Cui Tiejun, academician of the Chinese Academy of Sciences, said that large-scale antenna array technology and millimeter wave full spectrum access technology can well realize the high-capacity mobile communication in the 5g era. However, the above two technologies face the problems of using a large number of RF devices, high system complexity and high cost. Therefore, how to minimize the number of RF devices and antennas and reduce the cost becomes the focus of discussion in the post 5g and 6G era. For this reason, Cui Tiejun proposed the concept of information metamaterial, which can encode space and time in two dimensions, regulate the electromagnetic beam and electromagnetic spectrum at the same time, and regulate the beam of different spectrum, so as to do multi-channel wireless communication.

Guo Yingjie, academician of Australian Academy of Engineering

Guo Yingjie, academician of the Australian Academy of engineering, believes that in the b5g era, mobile communications will achieve seamless integration from the ground to space. Because the future wireless communication antenna needs to achieve low power consumption, low cost, ultra bandwidth, high gain, reconfigurable and multi beam requirements. For this reason, Guo Yingjie said that due to its low cost and low energy consumption, the analog multi beam antenna may become the main candidate for the post 5g system. At the same time, the reconfigurable leaky wave antenna can generate fixed frequency beam scanning and multi beam. In addition, more innovative solutions are needed to increase the flexibility of obtaining multi beam that can be scanned separately.

Chen Zhining, academician of Singapore Institute of Engineering

Chen Zhining, academician of the new capi Academy of engineering, said that the antenna technology of mobile communication has changed from omni-directional antenna in 1g era, to planar antenna in 2G era, to multi band antenna in 3G era, to MIMO antenna in 4G era, and then to large-scale array antenna and millimeter wave technology in 5g Era, so which direction will the future antenna evolve? Chen Zhining said that in the future, the material of antenna is bound to shift from natural material to metamaterial, and the super surface can realize flexible and effective control of electromagnetic wave polarization, amplitude, phase, polarization mode, propagation mode and other characteristics.

Professor Hong Wei of Southeast University

The industry has said that millimeter wave will become the only way in the 5g era. At present, China has approved 24.75-27.5ghz and 37-42.5ghz as experimental frequency bands. Professor Hong Wei of Southeast University pointed out that at present, 5g millimeter wave technology based on large-scale MIMO has become mature, key technology verification has been basically completed, and it is expected to start commercial use around 2022. In the 6G era, millimeter wave will be the preferred broadband transmission technology for inter satellite links, user links and feed links. Starlink of SpaceX mainly adopts Ka band and Q band. It is certain that millimeter wave technology will be one of the most important supporting technologies for 6G network. However, limited by the characteristics of semiconductor technology, in terahertz frequency band, the transmission power, receiver noise figure, manufacturing difficulty, cost and so on are the bottlenecks that need to be broken through in the application of terahertz.

Zhou Zhipeng, chief scientist of the 14th Research Institute of CETC

Zhou Zhipeng, chief scientist of the 14th Research Institute of China Electronics Technology Group Corporation, believes that millimeter wave electronic systems have broad application prospects in the field of military equipment or civil electronics. With the development of technology and the decrease of cost, millimeter wave systems will occupy more market share or even dominant position. At the same time, in the field of mobile communication, millimeter wave applications in 5g communication have great development potential, especially in the three-dimensional and multi-dimensional information network space proposed by the concept of “integration of heaven and earth” and 6G, the flexibility of electronic equipment of traditional reflector system is far less than that of advanced phased array system, and millimeter wave phased array technology has great potential to replace such applications. In addition, with the development of multi-functional requirements, the integration of communication and radar detection technology will be further deepened. At the same time, millimeter wave communication technology embedded in large radar to replace wired transmission will become possible.

Chen Shanzhi, China information and Communication Technology Group Co., Ltd

Dr. Chen Shanzhi of China information and Communication Technology Group Co., Ltd. mentioned that b5g is mainly the mobile communication of land and satellite integration, which is formed by the integration of 5g land mobile communication and LEO satellite mobile communication. B5g can achieve high-precision positioning through 5g low delay and global navigation satellite technology. At the same time, b5g will realize the deep integration of communication, computing and storage, reduce the delay, improve the user experience and system business support ability. In addition, b5g will realize the integration of communication and radar, and realize the integrated design, so as to reduce the cost and power consumption, improve the detection accuracy, and achieve a more comprehensive perception effect. In the aspect of 6G, Chen Shanzhi believes that 6G will integrate technologies such as land wireless mobile communication, medium and low orbit satellite mobile communication and short-range direct communication, integrate technologies such as communication and computing, navigation, perception and intelligence, and establish space, space, earth and sea ubiquitous mobile communication network through intelligent mobility management and control, so as to realize high-speed broadband communication with global ubiquitous coverage. At present, China information technology is carrying out research work in the field of nr-v2x, 6G and 5g based integrated ground and satellite mobile communication.

Professor Zhang Jianhua of Beijing University of Posts and Telecommunications

Zhang Jianhua, Professor of Beijing University of Posts and telecommunications, said that the development of mobile communication from 1g to 5g is inseparable from the modeling of wireless channel. The significance of channel research is to determine the spectrum and explore new technologies. Zhang Jianhua pointed out that it has taken more than 10 years for 3.5GHz to become a global 5g band. Through the exploration, modeling and analysis of vertical dimensional spatial propagation characteristics, it has promoted the realization of 3D MIMO technology from theory to application. This is especially true in the 6G era. However, due to the sharp increase in the amount of 6G wireless channel data and the large span of each dimension, the modeling complexity will also increase. In order to support the potential technology research and application of 6G, it is essential to explore and master the channel characteristics and models. In Zhang Jianhua’s opinion, the research of b5g / 6G channel should focus on terahertz channel, industrial Internet of things channel, space and space integrated channel and intelligent channel modeling method.

Professor Liu Ying of Xi’an University of Electronic Science and technology

Liu Ying, a professor at Xi’an University of Electronic Science and technology, pointed out that in the 5g era, the Internet of things, artificial intelligence, smart city and other application scenarios cannot do without the demand for large capacity. At the same time, the continuous emergence of 4K / 8K ultra high definition video and AR / VR applications makes people’s demand for data transmission rate showing exponential growth. Using MIMO technology can effectively improve the channel capacity and spectrum utilization without using additional spectrum resources and increasing the transmission power. Of course, in MIMO design, it needs to meet the requirements of compact size, high isolation, low ECC and reducing the use of external decoupling structure. To meet these requirements, Xi’an University of Electronic Science and technology proposed a multi antenna design based on shared aperture module, and carried out the corresponding theoretical research and test verification.

Professor Chen Wenhua of Tsinghua University

As we all know, the energy consumption of 5g base station is a big problem for operators. From the perspective of energy consumption, Professor Chen Wenhua of Tsinghua University explained that the power amplifier (PA) still plays a major role in the efficiency of the transmitter, and the average efficiency must be continuously improved. In addition, Doherty topology still has great potential in 5g large-scale MIMO transmitter architecture. At the same time, power amplifier module or FEM will be popular in dozens of channels of 5g massive MIMO. In order to improve the overall efficiency, we can consider the trade-off between system level efficiency and linearity. At the same time, we must invent novel DPD linearization technology to reduce system complexity and cost.

Professor Hu Wei of Beijing University of Technology

Hu Weidong, a professor at Beijing University of technology, believes that Terahertz Science and technology can be widely used in astronomical observation, atmospheric remote sensing, military applications, 6G communications, automotive radar, safety imaging and biomedicine. After years of development, terahertz communication technology is transforming from laboratory stage to practical application. At present, the high-speed WLAN and high-speed bus in the aircraft cabin, inter aircraft links and planetary in-situ links have received continuous attention from the United States and other developed countries, and terahertz has been included in the planned frequency band. At the same time, terahertz components are developing towards monolithic integration, especially for components above 220GHz. The second generation semiconductors such as GaAs and InP are still dominant in terahertz band. In addition, developed countries have begun to carry out communication experiments in the higher frequency band (0.5thz) and try single-chip systems, etc., and the communication spectrum has become increasingly hot. It should be pointed out that the fixed-point communication technology of terahertz space communication technology has become mature, and the beam adaptive tracking and agile control problems need to be further solved.

Yao yuan, Professor of Beijing University of Posts and Telecommunications

Yao yuan, a professor at Beijing University of Posts and telecommunications, said that millimeter wave and terahertz are widely used in military and Ming applications, but there are many challenges in antenna measurement. For this reason, Beijing University of mail independently designed and built a compact field antenna test system which can work in millimeter wave terahertz band. The test system can obtain real-time system position parameters, and ensure the authenticity and accuracy of test results through a series of directional stabilization, synchronization and calibration technologies. It provides technical reserves for 5g millimeter wave and even 6G antenna measurement requirements.

Professor Wang Zhengpeng of Beijing University of Aeronautics and Astronautics

Wang Zhengpeng, Professor of Beijing University of Aeronautics and Astronautics, said that 5g and even the future b5g and 6G put forward new requirements for RF and antenna, which also posed new challenges for RF and antenna measurement. In recent years, in order to meet the needs of measurement, a variety of Ota measurement systems related to base station antenna have been developed by major manufacturers at home and abroad, each of which has different forms and is based on different air port measurement technologies. According to Wang Zhengpeng, the products of foreign manufacturers are mostly complete series and systems, while domestic products are mainly single products with low influence. Therefore, Beijing University of Aeronautics and Astronautics has carried out in-depth research in the field of air port measurement, developed a plane wave simulator suitable for sub6g development stage, developed a plane wave simulator suitable for base station production line, and studied the channel simulation environment based on spherical probe wall, and achieved remarkable results.

5g has come, hot for the future of b5g and 6G antenna and RF technology, in this forum, experts and scholars respectively give the corresponding research results and thinking, in the proposed cutting-edge basic theory, key common technology, but also pave the way for the future industrial application.

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