Next-generation 5G Internet of Vehicles based on cellular network C-V2X

The concept of Internet of Vehicles has been discussed for many years, and it already has a better operating scenario and operating model in the European and American markets, while the domestic Internet of Vehicles layout is relatively slow. It is quite vague for people to understand the concept of Internet of Vehicles. What is Internet of Vehicles and how to achieve Internet of Vehicles, for example, whether adding a 4G module to the car for WAN access is Internet of Vehicles, and adding a call network to a fleet is the car Networking, what is the connection between driverless and Internet of Vehicles, what technologies does Internet of Vehicles have, etc. In order to let everyone better understand and participate in the construction of Internet of Vehicles, let me briefly introduce the car Networked technologies and functions.

Technologies and functions of Internet of Vehicles

The Internet of Vehicles can be simply divided into three parts: network interconnection, information transmission and data operation from the functional architecture, and can be divided into three parts: the intranet, the Internet of Vehicles and the Internet of Vehicles. The core of the Internet of Vehicles is an effective, Fast and stable intercommunication network, this intercommunication includes intercommunication between car, car and infrastructure, car and people, and car and network, through this interworking network to collect and transmit various sensor data And upstream and downstream information commands to achieve predictable safe driving and various business bearers.

At present, there are two main types of wireless communication technologies for Internet of Vehicles, one is DSRC dedicated short-range communication technology based on WIFI, and the other is the next-generation 5G Internet of Vehicles based on cellular network C-V2X; let ’s take a closer look Both options.

DSRC special short-range communication technology based on WIFI

DSRC is the abbreviation of Dedicated Short Range Communication, that is, dedicated short-range communication technology. DSRC uses the 802.11p specification. It is a wireless specification developed based on the existing WIFI wireless technology 802.11a. It uses the 5.9GHz communication frequency band. Efficient wireless communication technology, providing high-speed data transmission, and ensuring low latency and low interference of the communication link, can identify high-speed moving objects in a small area with a range of tens or hundreds of meters And two-way communication, real-time transmission of image, voice and data information. So far, DSRC technical standards have been maturing in the United States and Europe, becoming an open and patent-free unified standard, which has been widely used in ETC, access control, fleet management, vehicle identification, road warning, congestion reminder , Information reminders, road rescue and information services.

Next-generation 5G Internet of Vehicles based on cellular network C-V2X

The cellular car networking technology C-V2X, a communication technology designed for high-speed mobile applications, has been specifically optimized for automotive applications, and includes the actual application experience of 802.11p and the basic progress of wireless communication, using the global wireless ecosystem The system implements a brand new set of automotive applications that can bring users higher safety and autonomous driving performance. Cellular vehicle networking includes V2V, V2I, V2P direct communication, and also includes V2N network-based communication, which can be well adapted to different application scenarios. With the big step forward of 5G commercialization, it brings more new use cases for cellular-based IoV technology, especially in the high data volume information sharing also provides sufficient technical support, including broadband carrier support, ultra-low Latency, high reliability, etc .; and all functions can be implemented based on the cellular modem already built into the new car, which means it can cover every car location in the world.

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