Car networking emergency message real-time performance ensuring method

Abstract

The invention belongs to the field of car networking car-car communication, and particularly relates to a car-networking-oriented emergency message real-time performance ensuring method. Messages with low credibility are gathered several times, the messages are broadcast after meeting certain conditions, and meanwhile expired and suspect messages are screened out to ensure the emergency message real-time performance. It is ensured that emergency messages can be broadcasted, meanwhile, energy consumption and network overhead of an on-board unit are reduced with low communication cost and computation overhead, the real-time performance and credibility of the messages are ensured, and a simple and efficient emergency message real-time performance method and strategy are provided for a car networking auxiliary traffic safety mechanism.

Description

technical field [0001] The invention belongs to the field of vehicle-to-vehicle communication of the Internet of Vehicles, and in particular relates to a method for ensuring real-time emergency message for the Internet of Vehicles. Background technique [0002] In the Vehicular Ad-hoc Network (VANET), high-speed moving vehicles share traffic information in real time through a wireless ad-hoc network to improve driving safety. Traditional traffic safety-related applications often adopt a simple periodic sending mechanism when sharing emergency event messages, that is, periodically send relevant messages within a period of time when an event occurs and is detected. On the one hand, this method may cause broadcast storms, and on the other hand On the one hand, insufficient consideration is given to the real-time nature of the message, which will not only waste communication resources and affect the dissemination of other messages, but also cause the receiver to make wrong drivi...

AI Technical Summary

Problems solved by technology

After a few minutes, the emergency was lifted and the traffic order was restored. However, within a period of time, the message still existed widely in the network. Vehicles V3 and V4 would make wrong driving decisions (such as avoiding danger) after receiving the message of losing real-time detour, emergency braking, etc.), may affect the original itinerary, and even cause a crash

It can be seen that the emergency message transmission mechanism commonly used at present will bring risk factors to driving safety, so the technology to ensure the real-time emergency message is an important topic in road safety research

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