A method of detecting if a relay is present in a PEPS system for a vehicle is provided. The PEPS system includes a plurality of predefined subzones within one or more vehicle inclusion zones and the method includes the steps of: (a) transmitting a challenge signal including an LF telegram and CW signals from one or more antennas associated with the vehicle to a key fob, the CW signals being measured by the key fob; and (b) determining if CW signals measured by the key fob meet predetermined magnetic field strength values associated with one or more subzones from a plurality of predefined subzones, the predefined subzones being derived to accept the magnetic field distributions at localised positions within a valid inclusion zone and reject magnetic field distributions generated by a relay at a relay transmitter.


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    Titel :

    Method and system for relay attack prevention using subzones


    Beteiligte:

    Erscheinungsdatum :

    2024-07-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04B TRANSMISSION , Übertragung / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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