Emergency message multi-hop broadcast transmission method based on vehicle to vehicle cooperation

Abstract

The invention relates to an emergency message multi-hop broadcast transmission method based on vehicle to vehicle cooperation. The method comprises the steps of effectively identifying the positions, speeds, driving directions, channel quality and the relevant information by a vehicle node by virtue of periodic broadcast beacon information; selecting an optimum coordinating vehicle by the vehicle according to the relevant information of surrounding neighbors, and placing an IP (Internet Protocol) address of the coordinating vehicle into emergency information so as to obtain data with consistent formats, and then broadcasting the emergency information to the surrounding vehicle nodes; broadcasting the information to the latter vehicles after the coordinating vehicle receives the information without the need of setting retreating and waiting time, judging the moving directions and position relationships of the coordinating vehicle and a vehicle subjected to a sudden accident by other vehicles, and then deciding to adopt corresponding measures or discard the information. Compared with the prior art, the emergency message multi-hop broadcast transmission method has the advantages of being high in emergency information transmission reliability, being efficient to transmit and the like.

Description

technical field [0001] The invention relates to intelligent transportation technology in the Internet of Vehicles, in particular to a multi-hop broadcast transmission method for emergency messages in the Internet of Vehicles based on vehicle-vehicle cooperation. Background technique [0002] In terms of road traffic safety and intelligent transportation, based on vehicle-to-vehicle wireless communication, all vehicle status information (including attribute information and static and dynamic information, etc.) and road traffic environment information (including road infrastructure information, traffic conditions, Service information, etc.), information sharing, timely and credible data exchange to achieve safe driving and comfortable driving functions. Based on vehicle-to-vehicle communication or vehicle-to-road communication, combined with vehicle-mounted GPS and CAN bus, the vehicle-mounted active safety system can notify the driver of possible dangerous situations in advan...

AI Technical Summary

Problems solved by technology

At present, most road accidents are handled only by accident warning signs, or by traffic police on-site command, which is likely to cause large-scale, long-term traffic congestion, and follow-up vehicles continue to drive into the accident without knowing the unexpected accident ahead. roads, causing more serious congestion

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