LOW POWER KEY SYSTEMS AND METHODS

A Passive Entry Passive Start (PEPS) method is described. The method includes obtaining, via a BLE receiver of a key fob, a first BLE wakeup signal from a vehicle. In response to obtaining the first wakeup signal, the method includes activating a BLE transceiver of the key fob. Upon activation of th...

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Bibliographische Detailangaben
Hauptverfasser:	DeLong, Aaron, Elangovan, Vivekanandh
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A Passive Entry Passive Start (PEPS) method is described. The method includes obtaining, via a BLE receiver of a key fob, a first BLE wakeup signal from a vehicle. In response to obtaining the first wakeup signal, the method includes activating a BLE transceiver of the key fob. Upon activation of the BLE transceiver, the method includes activating a UWB transceiver of the key fob via the BLE transceiver. When the UWB transceiver is activated, the method includes receiving a challenge signal from the vehicle via the UWB transceiver. Upon receiving the challenge signal, the method includes transmitting a response to the challenge signal via the UWB transceiver. Based on the response to the challenge signal, the method includes receiving a success signal from the vehicle. Upon receiving the success signal, the method includes deactivating BLE transceiver and the UWB transceiver.