The car network cloud drives the traffic intelligence
Network of Vehicles (V2X) refers to a series of vehicle-based connectivity schemes, which are a data communication network among people, vehicles, roads, networks, cloud control centers and other core elements of future transportation, mainly including V2V (vehicle-vehicle interconnection), V2I (vehicle-road interconnection), V2P (vehicle-to-vehicle interconnection), and V2N (vehicle-to-vehicle interconnection).
Among them, V2V enables vehicles to quickly acquire the driving line and distance of short-distance vehicles through data interaction between vehicles, so as to increase their judgment of short-distance road condition information. V2I mainly connects the vehicle with the road side infrastructure, transmits the data to the vehicle through the road side's perception of the whole road information, and then enables the vehicle to have certain perception ability for the medium-distance road condition information.
Through the connection between cars and people, V2P improves the accuracy of location judgment of people, thus improving the safety of the whole traffic.
V2N connects the vehicle to the network or the cloud, enabling the vehicle to receive and execute the overall decision on the cloud (the cloud makes optimal decisions on traffic from a global perspective).
These links are essential if the new smart networks of the future are to be built. Through getting through the data connection of core node elements, the intelligent level of traffic can be greatly improved. Therefore, the Internet of vehicles is the cornerstone and prerequisite for realizing intelligent traffic. The car, road, network and cloud are the key nodes of network construction, which need network transformation, which will also promote the development of the car network industry.
The four elements will continue to evolve in the future intelligent transportation ecology and become the key nodes with intelligent attributes and specific functions:
As the most basic node of traffic construction, the intellectualization degree of vehicle directly determines the intellectualization level of future traffic. In the future, the vehicle will first have the ability of perception and network connection. The vehicle will be able to judge its driving state by itself and convert it into data through sensing. Then, the vehicle will conduct data communication through the Internet of vehicles and receive externally transmitted data. In addition, intelligent cars will have optimal route decisions and autonomous driving capabilities, which will also be based on connectivity.
The road improves its intelligence degree by improving its own perception ability and network connection level. Through the construction of road side infrastructure, the road and traffic conditions are comprehensively perceived, relevant data are transmitted in real time, abnormal traffic conditions are quickly indicated, and decisions are fed back through signal lights and other equipment. In addition, the road side serves as a transit station to connect the car with the network cloud.
Network is a key link in building the Internet of vehicles. The quality of network transmission directly determines the safety and reliability of traffic and the level of intelligence. At present, 5G can guarantee the efficiency and safety of vehicle networking by continuously improving transmission speed and reducing delay.
Cloud is a key node for the upper layer of the Internet of vehicles, known as the "Internet of vehicles" brain. It is mainly used to make rapid analysis and judgment on the massive data transmitted from the receiving network, and then make decisions on the optimal scheme of current traffic and unified allocation of traffic resources. For example, it plays an important role in formation driving and forecast driving.
The Internet of Vehicles solves the problem of traffic efficiency and safety
For now, there are still sore spots in global transport. On the one hand, traffic efficiency is low, which is especially prominent in big cities. The morning rush hour traffic congestion in first-tier cities in China leads to low traffic efficiency, thus reducing the overall operation efficiency of the city. According to data from the 2018 traffic analysis report released by Autonot, congestion in big cities causes 5-8% of GDP to be lost every year.
On the other hand, the traffic accident rate is still high, which puts forward higher requirements for traffic safety. Some traffic pain points can be solved to a certain extent through the application of Internet of vehicles.
From the perspective of urban governance, through the popularization of Internet of vehicles and the expansion of application scenarios, urban travel efficiency can be improved and urban congestion can be reduced. In this way, economic losses caused by congestion can be reduced on the one hand, and comprehensive competitiveness of cities can be enhanced on the other hand. From the personal point of view, the popularization of Internet of vehicles can improve the safety of traffic, but also save the travel time. For third-party service providers, after the Internet of vehicles, information will be more diversified through vehicle transmission, bringing more traffic access and new profit models.
Internet of vehicles and intelligent transportation will be an important application scenario after the popularization of 5G
As a way to change the future world's information interaction and improve intelligence, 5G has made continuous technological breakthroughs in recent years and achieved official commercial use in all major countries and regions. 5G not only solves the communication between people, but also solves the interconnection between people and things as well as between things, thus truly realizing the interconnection of everything.
5G includes three major application scenarios: enhanced mobile broadband, large-scale connectivity, and low-latency, high-reliability communications.
These three scenarios correspond to multiple segments of the application. Since traffic communication needs lower delay and higher reliability to ensure traffic safety, low delay and high reliability scenarios mainly correspond to the field of vehicle networking and intelligent driving. Currently, global 5G standard-setter 3GPP has established a standard for enhanced mobile broadband in Release15, and the other two scenarios are expected to be implemented soon.
The Internet of vehicles will become an important 5G application scenario.
In the 5G ecology, the Internet of everything will become the normal state, and cars, as a large number of moving objects, will also be bound to be networked. Because the network before 4G and before cannot guarantee low delay and information reliability of network transmission, in the traffic environment that needs to ensure a high degree of safety, vehicle networking can only achieve network entertainment and simple interaction function, but cannot solve the two biggest traffic pain points: efficiency and safety.
5G's scenario of low delay and high reliability is tailored for vehicle networking. 5G's delay time is only 1ms, which enables connected vehicles to make quick judgment and decisions based on other transmitted data, greatly enhancing the safety attributes of vehicles. After 5G services are fully rolled out, it is expected that car networking and intelligent driving will also receive full support.
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