5g millimeter wave has many outstanding advantages, such as large frequency broadband capacity, easy combination with beamforming and ultra-low delay, which is conducive to promoting the development of industrial Internet, AR / VR, cloud games, real-time computing and other industries. At the same time, millimeter wave can support the deployment of dense areas, carry out high-precision positioning and high equipment integration, which will help to promote the miniaturization of base stations and terminals.

According to the economic analysis of 5g millimeter wave released by GSMA in 2021, through the comprehensive analysis of the development cost, gain and economic benefits of 5g millimeter wave, it shows that the combination of 5g millimeter wave and if C-band will bring obvious cost optimization and gain to operators in the scenario of high-density urban deployment and fixed wireless access.

According to the data shared by Joe Barett, President of GSA, 186 operators in 48 countries are planning to develop 5g on the millimeter wave spectrum of 26-28ghz, 37-40ghz and 47-48ghz. 134 operators in 23 countries hold licenses and can carry out millimeter wave deployment. North America, Europe and Asia account for 75% of all spectrum deployment.

Satellite application refers to the application of the achievements of satellite technology and its developed space resources in economic construction, national security, scientific and technological development, social progress and many other aspects. Satellite application is a part of the whole satellite industry chain. Satellite applications are divided into technical fields and service modes. At present, they mainly include satellite communication, satellite navigation and satellite remote sensing.

China's communications satellite industry has developed for nearly 50 years since China successfully launched its first man-made earth satellite, dongfanghong-1, in April 1970.

As a kind of radio wave, the millimeter wave in the past was not remarkable. The microwave transmission distance with lower frequency was far away, and it made great achievements in the field of communication. The light wave with higher frequency was also widely used in digital, communication and other fields. Only the millimeter wave in the middle was ignored.

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