The world's first fifth generation mobile communications (5G) system in the frequency band frequency planning. According to the website of the Ministry of Industry and Information Technology, recently, the Ministry of Industry and Information Technology released the frequency utilization plan of 5G system in the frequency band of 3000-5000MHz (middle frequency band), and our country became the first country in the world to release the 5G system frequency planning in mid-frequency band. It specifies that the frequency band of 3300-3400MHz (for indoor use in principle), 3400-3600MHz and 4800-5000MHz should be used as the working frequency band of 5G system. It is stipulated that 5G system shall not use radio frequency astronomy service in the same frequency band or adjacent frequency band And other radio services. At the same time, since the date of issuance, it will no longer accept and approve newly applied fixed-line service frequencies in the 3400-4200MHz and 4800-5000MHz frequency bands and space radio service frequencies in the 3400-3700MHz band And 3400-3600MHz frequency band space radio frequency measurement and control of the use of permission. The 5G system is an important information infrastructure for China's implementation of the strategy of "building a strong nation by means of a" network power "and a high ground for developing a new generation of information and communication technologies. According to the technical and application characteristics and radio propagation characteristics, 5G system needs high (above 24GHz millimeter wave band), medium (3000-6000MHz band) and low (below 3000MHz band) frequency resources, which are the most crucial basic resources for research and development and deployment of 5G systems. Different frequency band operating frequency to meet the coverage, capacity, the number of connection density and many other key performance indicators. The frequency band 5G system frequency utilization plan of this release has comprehensively taken into consideration all aspects of international and domestic factors and taken into consideration of the demand for frequencies used by national defense, satellite communications and scientific research departments and industries, and protected the rights and interests of existing users in accordance with the law, taking into account the system The basic requirements of coverage and large capacity are the main frequency bands for the early deployment of China's 5G system. In order to ensure the scientific and reasonable planning, the Ministry of Industry and Information Technology has made preparations for the revision of the "Regulations on the Classification of Radio Frequency in the People's Republic of China" and the related issues concerning the 2019 World Radiocommunication Conference of the ITU, and comprehensively sorted out the relevant frequency bands at home and abroad Planning and use of the current situation, tracking the major global countries or organizations 5G system spectrum strategy. According to the conclusions of spectrum demand forecasting, electromagnetic compatibility and coexistence technology analysis, the programs of coordination, scientific analysis and demonstration, expert consultation and solicitation of opinions from the public have finally formed an official program of frequency utilization planning and released to the public initiatively. The Ministry of Industry and Information Technology, the first to release the 5G system in the frequency band frequency planning, will be China's 5G system technology research and development, testing and standards, as well as the development of the industry chain plays an important leading role. In the future, the Ministry of Industry and Information Technology will continue to adjust more frequency resources including high-frequency (millimeter wave) and low-frequency bands for the application and development planning of 5G systems.
Do you work with steel in your manufacturing facility? Whether it's turnings, chips, filings, shavings, cuttings, sawdust, drillings, borings, debris, granules or sludge, a steel Briquette Machine from Ecohydraulic is the solution. Steel briquetting can double the value you get, cause steel briquettes are easier to manage, transport, sell and recycle. It can also squeeze out the liquids from your scraps.
Steel Briquetter, Steel Shavings Briquette Machine, Steel Chips Briquette Machine, Steel Briquetting Press, Steel Briquetting Machine Jiangyin Metallurgy Hydraulic Machinery Factory , https://www.ecobriquetter.com