Information transmission is an important part of the Internet of things. At present, the different devices produced by IOT (Internet of things) manufacturers give rise to the various connection modes, such as infrared, Wi-Fi, network cable, Bluetooth, ZigBee, VB IOT, Lora and LTE, making the market in chaos. In view of the above situation, this paper proposed a new way of IOT communication by using PLC power line carrier for encrypted transmission. It covered the IOT network to all power supply terminals by using wires in the unit of the area. In this way, the IOT devices can be powered, solving the problem of the last kilometer of network signal transmission.

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5G technology has been continuously promoted and has become a key driving force to promote the development of all walks of life and assist the national strategic decision-making. In the era of Internet of Everything, 5G network slicing technology, with its advantages of low latency, high security and scheduling, can better realize the rational and efficient scheduling and allocation of network resources, and fully improve the effective utilization rate of resources. This paper systematically summarizes the network slicing technology, analyzes the application of 5G network slicing technology in different power Internet of Things business scenarios and communication requirements, and puts forward the challenges that 5G network slicing technology in smart grid may face in the future, aiming at providing theoretical basis for the further development of 5G technology and promoting the continuous development of 5G smart grid application.