After several years of rapid development, the global communication network can basically meet people's communication needs anytime and anywhere, meet the basic development needs of the Internet of things, such as the communication between things and things, between things and people, and high-level applications are emerging. It is estimated that the ratio of "Internet of things" business to interpersonal communication business will reach 30:1 by 2020. "Internet of things" is considered the next trillion dollar communications business.