Can ride hailing software accurately locate people and cars by 5G+BeiDou? The role of high-precision positioning also includes these... Beidou | Signal | People and Vehicles

Release time:Apr 13, 2024 20:20 PM

What can high-precision positioning do with "5G+Beidou"

Recently, the Ministry of Industry and Information Technology approved China Mobile's use of some of its 4.9GHz 5G frequency resources to conduct 5G ground to air communication technology experiments in relevant provinces in China. This technology will establish a ground to air communication link between the ground and the aircraft cabin, enabling passengers to access the Internet through wireless LAN access in the cabin, which will further enhance the spatial dimension of 5G network coverage and better meet the growing air access Internet needs of air passengers.

The coverage range of 5G networks is becoming increasingly wide from the ground to the sky. Can such a wide coverage of 5G networks have other uses besides communication? The answer from Professor Deng Zhongliang of Beijing University of Posts and Telecommunications is "yes".

"5G+Beidou" is exactly the answer given by Deng Zhongliang. "5G is the network on the ground, and Beidou is the network in the sky. Integrating the two to achieve 'integrated construction of communication and navigation' can bring massive high-precision and high timeliness geographic big data," said Deng Zhongliang.

Like the 5G communication network, the BeiDou satellite navigation system is another "major power weapon" in China. Since 1994, the development and construction of the Beidou-1 satellite navigation system has been initiated. Through the "three-step" strategy, the Beidou-1 satellite navigation system has become one of the four major satellite navigation systems in the world, providing services to users worldwide.

Why integrate 5G and Beidou

"'5G+Beidou 'can achieve seamless indoor and outdoor positioning," Deng Zhongliang said. "Although satellite navigation positioning solves the basic needs of outdoor open area positioning, the Beidou system can already provide relatively reliable positioning performance in outdoor open areas. However, its signal cannot cover indoor areas and has poor immunity to the environment, making it difficult to meet the needs of indoor positioning and outdoor occlusion and other complex area positioning."

Deng Zhongliang told reporters that due to weak satellite positioning signals and susceptibility to environmental factors such as obstruction, it is difficult to conduct indoor positioning, which is a difficult problem that countries around the world urgently need to solve.

Satellite signals from the sky are difficult to enter indoors, but communication signals from the ground are almost ubiquitous. So, can communication signals be used for positioning and navigation? In response to this issue, Deng Zhongliang and his team proposed a "communication integration" approach of "5G+Beidou".

"'Communication and Navigation Integration 'refers to using mobile communication networks for positioning and navigation. Deng Zhongliang explained to reporters,' Previously, satellite signals were only available outdoors, but not indoors. But now, by replacing satellite signals with communication signals, positioning services can 'run' from outdoors to indoors. 'Deng Zhongliang said that by allowing ground base stations that were originally only used for communication to provide positioning functions, the signal coverage of the two can complement each other, greatly improving the ability of location services.".

The idea of "conduction fusion" can not only improve the breadth of positioning signal coverage, but also greatly enhance the accuracy of positioning.

"At present, satellite positioning and navigation can use four satellites to calculate your position, and the accuracy of positioning can reach about ten meters. However, to further improve accuracy to the meter, decimeter, and centimeter levels, there must be satellite based, ground-based, and other enhancement systems. However, these enhancement signals cannot be accurately located in indoor, underground, urban canyons and other areas. Deng Zhongliang said that" 5G+Beidou "can achieve wide area coverage of positioning signals." The high speed and large capacity of 5G can stably transmit Beidou ground-based enhanced spatiotemporal position correction signals, making Beidou's spatiotemporal accuracy higher. In addition, the strong coverage ability of mobile communication networks can cover high-precision positioning services to humans and machinery. "All the spaces that can be involved

What fields can "5G+Beidou" be applied in

"'5G+BeiDou 'can empower thousands of industries," Deng Zhongliang said. The integration and mutual empowerment of 5G and BeiDou is essentially a fusion of time and space based on communication. "The simultaneous action of the two can produce disruptive technology, which will give rise to different applications in different scenarios."

In the field of transportation, Beidou's seamless indoor and outdoor positioning and navigation technology solves the problem of satellite signal loss in tunnel scenarios.

Deng Zhongliang introduced that in the past, due to the inability of satellite signals to reach the underground, precise positioning could not be achieved, resulting in regulatory blind spots under the tunnel. Once an accident occurred, it would bring great trouble. Now, "5G+Beidou" provides a new idea for solving the problem - "Although there is no satellite signal in the tunnel, there is communication signal. Now, using the idea of" communication fusion ", high-precision positioning can also be achieved in the tunnel, which helps to improve tunnel traffic efficiency, reduce the frequency of accidents in the tunnel, and reduce property losses caused by tunnel accidents."

"There is also the commonly used mobile taxi service - once you open the taxi app, you can immediately see where the car is and where the people are, which cannot be achieved solely through satellite positioning. Nowadays, by integrating satellite positioning with ground communication positioning, precise positioning of people and vehicles can be achieved," said Deng Zhongliang.

In the construction of smart mines, "5G+Beidou" has also shown impressive performance.

Based on 5G network and combined with BeiDou positioning technology, it is expected to achieve unmanned remote control of mining excavation, transportation, monitoring and other links. Deng Zhongliang said, "5G networks have the advantage of low latency, combined with high-precision positioning. When combined, people on the ground can achieve real-time monitoring of underground machines, thus realizing the concept of smart mines. For high-risk mining areas, production safety can be maximized, achieving zero accidents and zero casualties."

In addition to mining and transportation, "5G+Beidou" can also be used for surveying and mapping, unmanned agricultural machinery operation, unmanned aerial vehicle power inspection, smart elderly care, major event command and management, and other aspects.

According to data released by China Mobile, as of now, China has built 4400 high-precision positioning reference stations, forming the world's largest "5G+Beidou" high-precision positioning ground enhancement network. As Deng Zhongliang said, "In the future, the application potential of '5G+Beidou' will only be limited by our imagination."

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