It is necessary to accelerate research and development of 6G mobile network which will realize the deep integration of physical and virtual worlds, as the next generation mobile technology will be combined with advanced information technology like cloud computing, artificial intelligence, big data and blockchain. China has started 6G technology R&D in 2019 and has made breakthroughs in some key 6G technologies, such as new network architecture, integration of communication, AI for network and network for AI, and sensing reconfigurable intelligent surface.
