An inter-vehicle communication device and a driving assistance device that do not require map data are achieved at a low cost. The inter-vehicle communication device is mounted on a vehicle, and perform wireless communication with other vehicles, and includes an inter-vehicle communication unit including a reception level detection unit, a position information reception unit, and an arithmetic processing unit. The arithmetic processing unit calculates first and second inter-vehicle distances to first and second other vehicles through use of latitude and longitude information of the other vehicles and the own vehicle, receives a position error radius, and acquires a reception level from the first and second other vehicles. When a difference between the first and second inter-vehicle distances is smaller than any of a first position error radius and a second position error radius, a vehicle with a larger reception level is determined as a vehicle closer to the own vehicle. When the difference between the inter-vehicle distances is larger than both the first position error radius and the second position error radius, a vehicle with a smaller inter-vehicle distance is determined as a vehicle closer to the own vehicle, and a distance to a leading vehicle is calculated.


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    Title :

    INTER-VEHICLE COMMUNICATION DEVICE AND TRAVEL ASSISTANCE DEVICE


    Additional title:

    VORRICHTUNG ZUR KOMMUNIKATION ZWISCHEN FAHRZEUGEN UND FAHRTUNTERSTÜTZUNGSVORRICHTUNG
    DISPOSITIF DE COMMUNICATION ENTRE VÉHICULES ET DISPOSITIF D'AIDE AU DÉPLACEMENT


    Contributors:

    Publication date :

    2021-05-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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