At the 2016 National Science and Technology Awards Conference held on January 9, the "Terminal Mobile Communication System (TD-LTE) Key Technologies and Applications" won the National Science and Technology Progress Award. This shows the importance the country attaches to the development of the communications industry. Recently, the Ministry of Science and Technology organized a major special press conference on “New Generation Broadband Wireless Mobile Communication Networkâ€. The special project was reviewed and approved by the State Council executive meeting in December 2007. The goal is to become one of the leading countries in wireless mobile communication technology, standards, industries, services and applications by 2020, with comprehensive competitiveness and innovation capabilities. Enter the forefront of the world. In terms of technology and industry, “achieve two breakthroughs and expand two marketsâ€. In the development of international standards for wireless mobile communications, it has become one of the important leading forces. In the wireless mobile communication services and applications, it is in the world's leading level, leading the development of China's modern service industry and becoming an important pillar of the information power. In the past 30 years, China's mobile communications has experienced the development process of 1G blank, 2G follow-up and 3G breakthrough. Although China's proposed TD-SCDMA has become a 3G international standard, compared with the international mainstream, the industry is weak and the gap is obvious. It is only used in China, and the whole is marginalized, causing more users to switch to the mainstream WCDMA standard. In the era of 4G network, domestic operators and product developers not only have to occupy the market in products and industries, but also hope to get rid of the situation of being controlled by others in patents and strive to produce more and better patents. At present, the leap from the "3G breakthrough" to the "4G synchronization" foreign advanced technology has been completed. At present, the industry's R&D capability has been significantly enhanced, supporting the formation of a complete industrial chain of 4G systems, terminals, chips and meters. 4G realized industrialization and global scale commercialization. The total number of 4G users reached 734 million, and the total number of 4G base stations reached 2.498 million. The world's largest 4G network has been built. The participation of international standards has been significantly improved. China's leading TD-LTE-Advanced has become one of the 4G international standards. "The next-generation broadband wireless mobile communication network" special technical chief, academician of the Chinese Academy of Engineering, He Hezhen said that when setting a special goal, it is not based on follow-up, but the goal is to set the standard, technology, industry, and mobile communication standards by 2020. The application ranks among the top in the world. In terms of specific implementation, it is determined that the operator is the leader, the application is driven by the system, the system drives the device, the device drives the terminal, the terminal drives the chip, and the weak link of software, antenna and instrument is driven. He He pointed out that China has adopted many mobile communication standards and many frequencies, so China's mobile phone terminals are the most complicated in the world. How to achieve multi-frequency and multi-mode in this case, cheap and easy to use, is indeed a challenge, and then it will be a hard battle. Piezoelectric Buzzer For Driver Circuit Built-in
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