• In the decade of mobile communication, a new generation of technology 5G has emerged to realize indoor high-precision positioning

      The 9th China Satellite Navigation Academic Annual Conference kicked off in Harbin on Tuesday. Thayer terminal, senior engineer, assistant director of the laboratory antenna and positioning AnXuDong said at the meeting, mobile communications every 10 years of a new generation of technology, the introduction of new technology to realize the frequency spectrum efficiency and capacity of multiple, 4 g mobile communication support 1 GBPS, is now worldwide, the commercial scale, 5 g become the focus of research and development of the global industry, 5 g standards in 5 g technology development, has become the industry consensus, 5 g mobile communications will provide unprecedented user experience and Internet connectivity.

      Xudong An, deputy director and senior engineer of The Antenna and positioning Department of Theil Terminal Laboratory, delivered a speech. Photo by Jiang Hui of Northeast China

      Traditional positioning technology cannot be used for indoor positioning. Indoor positioning applications require positioning accuracy of several meters or less than 1 meter, and even the ability to distinguish floors. GNSS/A-GNSS systems cannot work without enough satellites in the room, said An. The positioning technology of cellular network, such as ECID and OTDOA, can cover the indoor signal, but the accuracy cannot meet the demand.

      From key technologies, 5G uses new coding methods, beam forming, large-scale antenna array, millimeter-wave spectrum, etc., with large bandwidth, which is conducive to parameter estimation, and provides support for high-precision distance measurement. Large-scale antenna technology is introduced, and the base station can be equipped with 128 antenna units, providing a foundation for high-precision Angle measurement. 5G will achieve dense networking, significantly increase the base station density, and user signals can be received by multiple base stations at the same time, which will be conducive to multi-base station cooperation to achieve high-precision positioning. 5G can realize indoor navigation and positioning services, such as shopping malls, stadiums, hospitals, stations, etc. Product guidance, such as mobile shopping, personalized advertising; Emergency response and personnel positioning, such as natural disaster rescue, risk personnel positioning; Smart cities, such as logistics positioning, family pet monitoring and so on.

      The fifth generation mobile communication (5G) technology has now entered the critical stage of technical scheme verification and standard development. Mobile Internet and Internet of Things are the two main driving forces for the future development of mobile communication, providing a broad application prospect for 5G.

      China has accelerated the research and development of 5G technology and industrial layout, showing a tendency of catching up in the research and development of 5G standards and the snatch of 5G global discourse power.

      National and local governments attach great importance to the strategic layout of 5G new generation mobile communication technology. In the plan to build a national science and technology innovation center, "implementing 5G key technology verification and promoting the transformation of scientific and technological achievements" will be the focus of development. In the Plan for the Development of Artificial Intelligence, it is clear that 5G research and development should be accelerated and the radiation driving role of 5G industry should be enhanced.

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