In September 2016, the 73rd meeting of 3GPP was held in New Orleans, USA. The V2V standard of LTE-V was officially frozen in Release 14. According to the recently released plan of 3GPP, the other V2X was completed in March 2017 (75th meeting). Core agreement. As the most promising vehicle networking carrier, LTE-V has obvious advantages in terms of delay, transmission rate, reliability and deployment cost. The DSRC standard has been ready for more than a decade. It is not difficult to believe that in the future, the Internet of Vehicles will have a situation in which DSRC and LTE-V will compete in the V2X standard.
Why talk about the V2X standard?
First of all, the car network is the network (V2X, Vehicle to Everything), which is connected to the vehicle and the heterogeneous network to realize the vehicle to vehicle (V2V, Vehicle to Vehicle). Interconnection between Vehicle and Infrastructure (V2I), Vehicle to Pedestrians (V2P), Vehicle to Cloud (V2C, Vehicle to Cloud), and Vehicle to Home (V2H) . To realize the interconnection between the car and everything, we must explore the medium of communication and the standard of communication.
In the past ten years, several international standardization organizations have carried out the work of formulating DSRC standards, including American ASTM/IEEE, European CEN/TC278 standard system and Japan's ISO/TC204. The ITS Center of the Ministry of Communications of China proposed to the Radio Management Committee of the Ministry of Communications to allocate the 5.8Ghz frequency band to short-range communications (including ETC charging systems) in the technical field of intelligent transportation systems. Due to the large number of fields involved, the influence is large, whether it is developed countries such as North America, the European Union and Japan, or China, the V2V standard is still in the promotion stage, and large-scale commercialization has not yet been realized. With the continuous development of the automobile industry, whether it is from the road traffic safety, road congestion, the large traffic angle of exhaust emissions, or from the perspective of consumer demand, the standard and promotion of V2X is an urgent task.
The purpose of communication between the car and the car is to improve the safety of road traffic through the functions of ADAS such as lane offset alarm, lane keeping assist, and anti-collision alarm. Therefore, ADAS is the foundation of the Internet of Vehicles. At present, many companies continue to introduce active safety technologies such as ADAS, but they do not consider the communication between vehicles. Without ADAS, communication between vehicles is meaningless. If communication between the vehicle and the vehicle is not realized, the availability of ADAS will be greatly reduced and social benefits will not be improved. The most effective way is that each car has the ADAS function, and each car is connected to the network. Only when these two conditions are met, once a vehicle finds an obstacle in front, the road ahead is abnormal, or the vehicle needs to be lined up, then the former The car can easily remind the rear car and the vehicles on both sides to ensure the safety of all nearby vehicles. ADAS can have different standards, but the communication between the car and the car must have a uniform standard, so as to ensure normal communication between the car and the car. The car network discussed at this stage is only a narrow sense of the Internet of Vehicles, which is TelemaTIcs. The research and application of the Internet of Vehicles only realizes the interconnection between the car and the cloud. It is not a car network. The real car network can realize the car and the car. Vehicles and roads, cars and pedestrians, and the interconnection of cars and the Internet, through the effective coordination of people, cars and roads, thus achieving the purpose of intelligent transportation. To achieve Internet communication between the car and everything, there must be a unified standard, which is the importance of the V2V standard.
At present, there are also companies dedicated to unmanned research. If the communication standard between the car and the car is not determined, the driverless will eventually be empty talk.
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