5G technology in its infancy, and in addition to speeding up the Internet speed, it will bring the Internet of Things and smart city technology to further enhance. In the recent 3GPP 5G short code scheme discussion of 3GPP, the Huawei recommended PolarCode (Polarization Code) was established as the final solution of 5 MB control channel eMBB scene coding. Prior to this, Qualcomm's proposed LDPG identified as 5G long code encoding solution. Compared with 3G, 4G only has voice and data services. 3GPP defined 5Gs and 3 major scenarios to broaden the range of services involved, ranging from high-bandwidth mobile broadband services such as ultra-high definition video to large-scale IoT services and driverless To the needs of industrial automation and other low-latency high-reliability connection business, can be easily achieved through 5G technology. As one of the basic technologies, the development of Internet of things will promote the development of smart cities. Pathfinder smart city "Smart City" was first proposed by IBM. In 2008, IBM shifted its business focus from hardware to software and consulting services and put forward the concept of "smart earth," which is to equip bridges, tunnels, roads, power grids, etc. with sensors Facilities connected to the object. Mark Deakin, professor at Napier University in Edinburgh, and Husam Al Waer, a professor at the University of Dundee, pointed out that smart cities should be defined in four ways: by applying a broad range of electronic and digital technologies to communities and cities, to using ICTs to change the lives and Work environment, the integration of ICTs into government systems and the integration of ICT technologies with individuals to enhance innovation. However, the exact definition of "smart city" has been in a groping phase. At present, a more consistent understanding of "Smart City" is to create a new urban landscape through the optimization of urban facilities and management procedures such as hospitals, food and drug, ticket and the like through ICT (Information and Communication Technology) and IoT (Internet of Things) technologies. "Smart cities are primarily about turning city services into highly efficient and smart systems that are not solved by an APP or WiFi coverage," said Xiang Ligang, a communications expert. As a whole system, smart cities need to improve the technical level and get through, these need to achieve large-scale enterprises. "There are many different technologies for the Internet of Things in the world that are localized. Like technologies like PHS in the past, they will eventually die and Huawei will go according to the standard." President, Huawei Products and Solutions Zhang Shunmao said Huawei's smart city layout will focus on ICT technology. Mainly from the new ICT platform and narrowband Internet of Things technology into the industry. Huawei promotes narrowband Internet technology globally and uses 180KHz frequency resources to reduce the interference and instability caused by open channels. "In addition to the narrow frequency range, this technology offers 100 times the connection speed compared to 3G networks and 4G networks," said Zhang Shunmao, president of Huawei's Product and Solutions Division. It is learned that Huawei's smart city solution has now established a smart city in more than 40 countries and more than 100 cities around the world. According to incomplete statistics, in 2016, Huawei won the bid for more than 20 smart city projects in China and signed strategic cooperation with 43 cities. The smart city applications on the ground cover smart government, safe city, smart healthcare, smart campus, Wisdom Transportation, Wisdom Education, Intelligent Manufacturing, Smart Street Lights and more. Huawei cloud data center solutions provide virtual data center services for more than 40 offices in the city. Four major challenges In 2015, the Ministry of Housing and Urban-Rural Development and the Ministry of Science and Technology announced the third batch of pilot cities in smart cities. In addition, the first two batches of cities were announced. At present, the number of national smart cities has reached 290 pilot projects. The other side of the ever-increasing number is that the depth of actual progress is not satisfactory. Some scholars pointed out that currently the smart city is entering the 2.0 from the era of 3.0, however, the command system in the actual landing has encountered no small challenge. Technically, smart cities are now facing major challenges in four areas: urban perception, data fusion, application construction and security. In recent years, Huawei has devoted more and more R & D to research and development. 30% of R & D investment has been devoted to exploration of engineering technologies under the iceberg, including chip algorithms, materials, cooling and full links. According to the work plan of Ministry of Industry and Information Technology, China IMT-2020 (5G) Propulsion Team and 5G commercial plan of the three major operators, China will launch the second phase of 5G network test in 2017 and carry out large-scale pilot networking in 2018 Launched in 2019 5G network construction, the fastest 2020 formally commercial 5G network. "In the past, 3G, 4G, we are all one thing to solve, is to make the network faster and faster, and 5G in addition to fast, but also to reach a broader coverage, with low latency, low power consumption, Can further promote the development of Internet of Things technology. "Xiang Ligang told reporters. In the establishment of smart cities, China and Europe and the United States have different programs, the domestic mainly from the top of the framework began to transform, while Europe and the United States will start small and gradually transform. Therefore, the actual landing of smart cities in China is often affected by the difficulty of coordination and the high cost of promotion. This reporter has learned that the current wisdom of the city are often involved in the city management system to re-technical transformation, these transformations need to spend more money and risk costs. The National Smart City Pilot Project 2014 Annual Summary Report pointed out that the pilot cities in China are still facing problems of lack of innovation, financing difficulties, lack of evaluation systems and standards, and some pilot cities are not sufficiently aware of smart cities. In the simple urban information construction level. There are still many problems in the unified construction and coordination and sharing of smart cities. Some pilot construction projects lack the top-level design and overall planning, and the difficulties of coordinated docking are large. The redundant construction and isolated islands of information still exist. Xiang Li Gang believes that enterprises can play a certain role in promoting this. "It would be difficult for the environmental protection department to invest 5 billion to establish a national air testing system. However, enterprises will monitor the products to the market to collect the corresponding big data to make predictions so that they can solve the technical problems of landing."