As a new type of mobile communication network, 5G, not only to resolve interpersonal communication, but also to provide users with augmented reality, virtual reality, high-definition video, and other more immersive acme business experience. More importantly, we need to solve the problems of man-to-thing and thing-to-thing communication and meet the application needs of the Internet of Things, such as mobile health care, Internet of vehicles, smart home, industrial control, and environmental monitoring. 5G will penetrate into all industries and fields of the economy and society and become a key new infrastructure to support the transformation of the economy and society to digitalization, networking, and intelligence.