Message communication method and system between vehicles

Abstract

The invention relates to the technical field of block chains, and discloses a message communication method and system between vehicles, which are specifically applied to the Internet of Vehicles. The method comprise the following steps that: a first vehicle sends an event message to a surrounding second vehicle; the second vehicle determines the credibility of the event message and uploads the credibility and the identifier of the first vehicle to the road side unit; the road side unit generates a reputation score for an event message sent by the first vehicle according to the credibility, updates a total reputation score corresponding to the first vehicle stored on the block chain according to the reputation score, obtains the updated total reputation score from the block chain and sends the updated total reputation score to the second vehicle; and the second vehicle decides whether to forward the event message according to the total reputation integral of the first vehicle. Due to the fact that updating of the reputation points of the vehicles can be triggered every time one message is spread by the vehicles, if the vehicles frequently spread some useless messages, the reputation points of the vehicles become lower and lower, other vehicles cannot forward messages to the vehicles any more, disordered spreading of the messages by the vehicles can be restrained, and the reliability of the Internet of Vehicles is improved.

Description

technical field [0001] The invention relates to the technical field of block chains, and relates to a message communication method and system between vehicles. Background technique [0002] The Internet of Vehicles can greatly improve road safety and traffic efficiency, and has been widely supported by industry and academia in recent years. In the Internet of Vehicles, each vehicle can use advanced wireless communication technology to communicate with surrounding vehicles and roadside units in "Vehicle-to-Vehicle (V2V)" and "Vehicle-to-Roadside Unit (V2V) -RSU,V2R)" to send and receive messages. Collaborative safety applications are an important branch of the Internet of Vehicles. V2V and V2R message dissemination has greatly improved road safety and traffic efficiency. [0003] However, due to its unique characteristics, when there are dishonest and malicious vehicle nodes in the Internet of Vehicles, these vehicles refuse to forward messages or send malicious messages in...

AI Technical Summary

Problems solved by technology

[0003] However, due to its unique characteristics, when there are dishonest and malicious vehicle nodes in the Internet of Vehicles, these vehicles refuse to forward messages or send malicious messages in order to maximize their own interests, which leads to low communication efficiency of the entire Internet of Vehicles network. And seriously damaged the reliability of the Internet of Vehicles, seriously hindered the practical application of the Internet of Vehicles

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