The first generation of mobile communication technology (referred to as 1G) realized the miniaturization of analog voice mobile communication for the first time. 2G digital voice calls and short message sending and receiving have accelerated the process of mobile phones replacing fixed telephones; 3G mobile Internet services (MMS, mobile newspaper, WAP mobile website) lead to the gradual marginalization of paper media; 4G relies on enhanced mobile Internet and high-traffic video services, which makes smartphones begin to replace PCs on a large scale. 5G is a new generation cellular mobile communication technology after 4G. Its unique characteristics such as high speed, large bandwidth, low delay and low power consumption not only make it possible for mobile network applications to completely replace fixed network applications, but also pave the way for industrial-grade intelligent applications with high real-time and security requirements. Because the application of 5G focuses on the real-time perception and intelligent application of people, people and things, things and things, and numbers, 5G is a technological innovation from quantitative change to qualitative change, which will stimulate a variety of application scenarios in many industries and fields.
The peak rate of 5G network can reach 20Gbps (20 times that of 4G), and a two-hour HD movie can be downloaded in one second by using 5G technology. 5G supports every square kilometer 1 10,000 devices to access the network (10 times that of 4G), which is the basic condition for connecting everything and serving economic and social life. The transmission delay of 5G is below 1 ms(4g's110), which is shorter than the response time of human brain control (30ms), making it possible for remote precise operation and high-end industrial manufacturing such as unmanned operation, remote medical surgery and remote industrial control. The 5G equipment can support more than 5000G data exchange with the power consumption of 1 kwh, and the unit energy consumption is1100 of the existing technology, which can provide stable and reliable technical support for the development of intelligent innovative applications in various industries. In addition, in terms of high-speed mobile, spectrum efficiency and capacity density, 5G has incomparable advantages over 4G.
5G can not only provide high-quality mobile communication, expand the performance of smart phones and enhance the ultimate experience of users, but also establish continuous and reliable communication among people, things and numbers, and plug in the wings of intelligent interconnection for business innovation in various fields. As the leader of new infrastructure in China, 5G, together with cloud computing center and distributed intelligent nodes, is constantly promoting the digitalization and intelligence of the real world. With the comprehensive coverage of 5G technology in supply, production, manufacturing and sales, the docking of supply and demand, personalized demand and collaborative production have become a reality, which will help to improve the digital and intelligent level of manufacturing; 5G network can greatly reduce the application threshold of artificial intelligence. Traditional industries constantly optimize the production mode and industrial structure through intelligent upgrading, and improve the domestic and international competitiveness of China Zhizao. Therefore, the new infrastructure system based on 5G's perception of everything and the interconnection of everything will surely accelerate the all-round arrival of the intelligent era and become an important starting point for leading the intelligent revolution and the key to solving problems and high-quality development.
The integration of 5G and the real economy has formed a key infrastructure for the transformation of the digital economy and continuously promoted the development of the real economy. Its typical application scenarios include: car networking and autonomous driving (deep integration of mobile communication and smart cars), intelligent manufacturing and industrial automation (intelligent production line and intelligent logistics warehousing), virtual reality and augmented reality (computing power is concentrated in the cloud and the terminal is lightly loaded), and intelligent unmanned aerial vehicle (unified image transmission, digital transmission and control). With its characteristics of high speed, large bandwidth, low delay and low power consumption, 5G can supplement the shortcomings of traditional industries and meet the needs of industry users. Its applications include intelligent and efficient urban governance (the integration of smart device application and digital technology), intelligent transformation of traditional manufacturing industry (the synergistic effect of 5G+AI to improve productivity and efficiency), ubiquitous three-dimensional financial services (virtual counter and three-free service | cash card mobile phone) and subversion of traditional medical operation mode (smart wear and artificial intelligence-assisted diagnosis and telemedicine surgery).
After experiencing 2G follow-up, 3G catch-up and 4G parallelism, China's mobile communication technology has made breakthrough progress in 5G technical standards, core patents, complete sets of equipment and terminal chip research and development, and achieved a historic leap forward in 5G. Now it has entered a new stage of widely applying 4G, deploying commercial 5G and exploring the development of 6G. On June 20 19, China officially issued a 5G license to operators. By the end of 2020, more than 710.8 million 5G base stations have been built, covering basically all prefecture-level cities above the county level. The scale deployment of 5G independent networking mode will continuously improve the service level of 5G; The distribution and use of 700Mhz high-quality spectrum resources will bring good news to the coverage of 5G signals in rural areas. In June 2020, 165438+ 10, China successfully launched the "University of Electronic Science and Technology of China" 6G communication experimental satellite, which will establish a transceiver link on the satellite platform and carry out terahertz load test, which will be the first international technical verification of terahertz communication in space application scenarios. After hard work, an intelligent Internet of Everything scene with integrated heaven and earth, global coverage, faster speed, lower delay, safety and reliability will be presented to us. (End)