Vehicle Emergency Broadcast Relay Logic

The patent applies local quality by making the relay behavior location-dependent. Vehicles within a predetermined distance from the transmission location do not relay messages, while vehicles beyond that distance do relay. This creates a spatially differentiated relay strategy where the same system (V2V communication network) exhibits different behaviors in different locations, optimizing both coverage and reducing redundancy by ensuring only vehicles at the edge of the coverage area rebroadcast messages.

The patent segments the vehicle population into two distinct groups based on their distance from the transmission location: vehicles within the predetermined distance that do not relay, and vehicles beyond that distance that do relay. This segmentation creates an efficient message propagation structure where only the necessary subset of vehicles (those at the propagation boundary) perform relaying, thereby extending message range while minimizing bandwidth consumption.

The patent implements preliminary action by requiring receiving vehicles to analyze and potentially update emergency information before relaying it. The controller examines the received message, compares it with current vehicle data, and determines whether to relay the information. This preliminary analysis step ensures information accuracy is maintained or improved while still achieving timely propagation, as the analysis occurs automatically and rapidly in the background before the relay decision is made.