The predecessor of the concept of the Internet of things is the sensor network. As early as 1999, the Chinese Academy of Sciences started the research on the sensor network technology and has made a series of achievements in scientific research. After 2009, there has been a wave of centralized research on IoT technology in China. In 2010, the Internet of Things was written into the government work report. From the industrial structure, industrial scale, China's current development of the Internet of Things industry is still in its infancy. Internet-related technologies, standards, products and markets are immature, the end of networking industry will reach 500 billion level of scale, by the end of 2020 will reach the scale of one trillion. Internet of Things deposit billions of Nuggets market Nowadays, the Internet of Things has become a new market wave and has become the new outlet of the communications industry chain. In a sense, the Internet of Things market is a huge gold mine. According to IDC's forecast, by 2020, the global number of Internet of Things will reach 28.1 billion and the revenue will exceed 7 trillion U.S. dollars. The number of connections given by Gartner is estimated to be 26.8 billion with a revenue of 300 billion U.S. dollars. According to the GSMA, By 2020, there will be over 30 billion Internet of Things connections, of which 10-20 billion will be based on cellular technology. Judging from the domestic market, China Mobile predicts that by 2020, the global access to the next generation of Internet connections will increase to 50 billion to the trillion-scale market, and China's access to the next generation of Internet connections will increase to 10 billion . Chinese Academy of Sciences Research and Development Center for IoT also predicts that in 2016 the overall revenue of the Internet of Things industry in China will exceed one trillion yuan. Three operators layout IoT Because of this, at present, all major enterprises are seizing the Internet of Things market. For domestic telecom operators, the significance of the Internet of things is particularly significant. Affected by policy pressures, OTT challenges and the gradual demographic dividend, domestic operators are under tremendous pressure to survive, and the Internet of Things is likely to become an exporter of carrier transformation. Precisely because of this, the three major operators have cut into and laid down Internet of Things businesses from different angles and different lines. At the 2016 Mobile World Congress, China Mobile Mobile Pavilion set up IoT Private Network Operation and Management Platform, IoT Communication Module and NB-IoT special exhibition area. China Unicom exhibited Narrowband IoT Smart Parking Based on 4G Network Technology; China Telecom said it will build the "four verticals" smart application ecosystem by relying on Tianyi's HD, Wings Payments, Internet of Things, cloud and big data, "Internet Plus" applications and core capabilities of traffic and security. Specifically, China Mobile focuses its strategy on focusing on the vertical market, empowering the elderly, the automobile industry and industry. The strategy of China Unicom is to locate the car network at the same time as the NB-IoT. China Telecom's Internet of Things strategy It is mainly driven by the business scenario to create a holistic view of the Internet of Things based on cloud, pipe and end, and build a complete industrial chain through application layer, cloud layer, pipeline layer and terminal layer layer by layer. Internet of Things technology there are four major issues Despite the rapid development of China's Internet of things, the market prospects can be expected, but at the same time, the development of China's Internet of things there are four major issues can not be ignored. First, the standard absence of obstacles to Internet technology development. At present, there is no international standard for IoT application, which is even more true in China. It is very difficult for industries and industries, enterprises and enterprises to apply IoT applications to a unified standard. due to Uniform standards, resulting in IoT projects can not interoperate, which undoubtedly increased the wide area network applications in the field of wide area network. The absence of technical standards for IoT will increasingly become a key constraint affecting the development of IoT industry. Not only IoT will not be interconnected, but to a certain extent, it will also affect the sustained, rapid and healthy development of the entire IoT industry. Second, the core technology aspects of things to be a breakthrough. Although the CAS research started earlier, in the field of Internet of Things in the world, China, as one of the leading countries in the formulation of international standards, has a promising development prospect. However, as far as two-dimensional code technology and RFID technology are concerned, the research in the developed countries in the west started earlier and developed rapidly. China is in a backward position in terms of chip design and manufacturing, terminal equipment and system applications. In addition, China still lags far behind the developed countries in terms of core technologies in the field of IoT. In the RFID industry chain, core technologies such as core chip research and development, system integration and software development are still not implemented by Chinese enterprises control. Third, the Internet of Things information security problems to be solved. If network security based on IoT technology can not be solved, the technical development of IoT will inevitably be affected. At present, information security risks exist in Internet technologies, wireless network technologies, data transmission technologies of network nodes, and the like, and all information disclosure may occur. Fourth, the problem of insufficient IP addresses to be resolved. After access to the Internet of Things, each item needs a unique IP address in order to solve the addressing problem. At present, the problem of insufficient IPv4 addresses is serious and can only be achieved by using IPv6 technology. However, the transition from IPv4 to IPv6 and how to handle the compatibility with IPv4 has become a challenge in the development of IoT technology. In this regard, China should attach great importance to increase investment in research and development of core technologies for the Internet of Things, seize the high ground of industrial development, and actively participate in the formulation of international standards; accelerate the demonstration construction of the Internet of Things application; cultivate a group of enterprises that master the core technologies of IoT; National IoT industrial base, through the way to point to achieve the layout of the national Internet industry optimization.