Listen to the academician talk about what 5G will bring tomorrow
Mobile communication has evolved from 1G, 2G, 3G, and 4G for personal communication to the present decade, and the "5G era" for industrial Internet and smart city applications is finally coming. What areas will the disruption of 5G bring about? Unlike previous generations of mobile networks, why do industries such as smart manufacturing and the Internet place such high hopes on 5G? At the 2020 Shenzhen Bay 5G Application Innovation Conference held recently, Wu Hequan and Guo Renzhong, academicians of the Chinese Academy of Engineering, conducted an in-depth interpretation of this.
Enhancing mobile broadband, supporting cloud enablement and high-definition high-speed transmission
To understand the application of 5G in the future, we must first talk about its characteristics. In the view of Academician Wu Hequan, 5G has the advantages of enhanced mobile broadband, ultra-reliable and low latency, and wide coverage and large connectivity. "Compared with 4G, the performance of 5G has improved by orders of magnitude. The peak capacity of 5G broadband is 30 times that of 4G, and the experience data is 10 times that of 4G." This means that the transmission rate of 5G has been greatly improved Compared with the 4G 100M level, it can leap to the Gigabit level, and this feature can support many application scenarios that require large amounts of transmission and are computationally intensive.
"5G first solved the problem of cloud empowerment." Wu Hequan said that traditional video conferencing, games, digital cultural industries, and industrial collaborative design all need to download the core program to complete the calculation locally, so the memory cost of the computer is relatively high. . Now the terminal can be connected to the Internet through 5G and then to the cloud computing platform in the background. Relying on the computing power and transmission capabilities of the cloud server, people no longer need to download terminals and programs. They can be plug-and-play and multi-screen. Achieve a smooth experience.
In addition, 5G's ultra-wideband and 500km/h transport rate make ultra-high-definition 4K, 8K and high-speed mobile video a reality. For example, alpine skiing with a speed of up to 250 kilometers per hour, if you install a 5G camera on the helmet and sledge of athletes, 5G can broadcast live video in ultra-clear, so that the audience outside the stadium can also feel the height, speed and difficulty of the athletes. "China Unicom has used 5G to pass the ultra-high-definition 8K table tennis game outside the venue and synthesize the multi-camera signals, so the off-site audience can get a 360-degree scene experience, and users can choose their own viewing angle." Wu Hequan It has been said that some merchants have tried to charge different angles. For example, in Wimbledon, Federer's visual angle can sell higher fares.
Ultra-reliable and low-latency, seamless connection with traditional emerging industries
Another notable feature of 5G is its extremely low latency. Due to the huge increase in coverage and network capacity, the delay of 5G can be less than 1 millisecond, which is far more stable and smooth than 4G. Therefore, the most typical application scenarios of 5G in the future are applications of VR and AR. The current 4G is still difficult to support the real-time transmission of VR/AR, but 5G can support its high-density computing.
"For example, when we put on a 5GVR helmet in the "Forbidden City China", we can experience the treasures personally, watch the ancient paintings of the Ming Dynasty, and even become a part of the animation." Wu Hequan said that this is not only very helpful for cultural tourism, but also Future education can also bring about great changes, allowing people to intuitively understand the microscopic world in biology, the operation of macroscopic celestial bodies, ancient historical scenes, and professional training applied to doctors.
According to this logic, including intelligent assembly manufacturing, self-driving cars, smart medical care, smart agriculture, industrial Internet and other fields that are very sensitive to network delays, the application of 5G can have a transformative impact.
"In March of last year, a doctor from the PLA General Hospital completed the craniotomy for Parkinson's patients through the 5G remote control of the robotic arm in Beijing 301 Hospital. During the outbreak, through artificial intelligence big data, 5G assisted doctors to read CT Film, combined with nucleic acid detection to diagnose new coronary pneumonia, greatly improving efficiency." Wu Hequan said.
Using the "skill" of 5G, a farm in Shaanxi has let a drone with a 5G camera scan the flowering situation of the entire apple orchard. Through intelligent analysis in the background, it is possible to clearly count how many flowers each tree has and which flowers It can be concluded that Apple's output is predicted 3 months in advance, so that Apple can be sold as a future.
Real Internet of Everything, making city construction and operation more intelligent
The Internet of Things refers to the connection of at least 1 million devices per square kilometer. The characteristics of 5G enable it to truly support the "Internet of Everything". "Perception, transmission, storage, and computing are the four essential capabilities for smart city construction." In the view of Academician Guo Renzhong, 5G will help smart city construction from four aspects: mobile transmission, real-time response, continuous indoor and outdoor positioning, and innovative applications. .
"If we want to build a smart city, we must build a data model of the city. A city like Shenzhen, including lane lines, sewers, and underground pipelines on the road must be exactly the same as the real world. This will bring huge amounts of data. At present, this This kind of application can only be used in a limited optical fiber environment, and it cannot reach the mobile terminal. And 5G can let it enter the terminal equipment, benefiting every citizen." Guo Renzhong said that with 5G, the UAV can be in the air in the future During the inspection, it automatically matches with the three-dimensional model, such as rapid perception and real-time scheduling of peak road conditions, and rapid processing of broken public facilities, so as to better serve the people.
At the same time, due to the increased density of 5G base stations, increased frequencies and antenna arrays, the positioning capability and positioning accuracy of 5G have been greatly improved. The mobile positioning of 4G is at the level of 100 meters, and the dynamic positioning of satellites is at about ten meters, while the accuracy of 5G can reach sub-meter level, at about 0.7 and 0.8 meters. What does this mean?
"For example, in the fight against the New Coronary Pneumonia epidemic, if someone is infected, his movement trajectory can be recorded on the mobile phone to sub-meter accuracy, we can track it and quickly know who he has had close contact with, and according to other people The trajectories are compared to determine potential infected objects, making isolation and virus tracing more accurate and efficient." Guo Renzhong said.
"After the advent of 3G, people have mobile phones, mobile e-commerce, Weibo, and WeChat. After the advent of 4G, we have scan code payment, sharing economy, online car rental, and live webcast. According to the development history of mobile communications, 5G’s The emergence, in addition to the above, may also bring some unexpected applications." Wu Hequan believes that the new generation of information technology empowers new applications, promotes the development of a smart society, and supports industrial digitization. 5G will surely become the new engine of the digital economy.
(Reporter Dang Wenting Yan Shenghe)