The Internet of Things is one of the greatest dreams of mankind. The realization of this dream requires the support of many technologies, and 5G is an indispensable part of it. For the Internet of Things, its main application scenarios are intelligent industrial, intelligent agriculture, intelligent transportation, smart grid, smart home, smart city, car networking and other information applications. Therefore, the basic needs of machine-based communication for 5G networks are concentrated. A large number of terminal access is, ultra-low latency, efficient connection, low cost, low power consumption, ultra-reliable, full coverage in several areas. The most important points in the connection technology requirements of IoT applications are: low power consumption to ensure high endurance, high rate for higher performance intelligent applications, low latency to ensure near real-time data transmission, high connectivity Density to ensure that huge terminal devices can access the network at any time.
5G key performance indicators include user experience rate, connection density, end-to-end delay, traffic density, mobility, and user peak rate. 5G needs to have higher data transmission performance than 4G, support user experience rate up to 1Gbps; millisecond end-to-end delay; million-level connection density per square kilometer, and tens of Tbps per square kilometer Density, mobility above 500Km per hour and peak rate of tens of Gbps. Among them, the user experience rate, delay and connection density are the three basic performance indicators of 5G. These three performance indicators are not so much for smartphone users, but rather for the technical requirements tailored for the Internet of Things.
Three major scenarios of 5G were defined at the 3GPP conference: eMBB, mMTC and URLLC. eMBB is a large-traffic mobile broadband service such as 3D/Ultra HD video. mMTC is a large-scale IoT service and URLLC stands for services such as driverless, industrial automation, etc. that require low latency and high reliability. If we define driverless and industrial automation as the Internet of Things in the general sense, then 5G is the wide-area wireless connection standard that the Internet of Things has been waiting for in response to the requirements of the previous IoT connection technology.
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