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.