US 12,156,093 B2
Method and system for accessing a functionality of a vehicle via a mobile device
Thorsten Knott, Tuntenhausen (DE); Daniel Knobloch, Mountain View, CA (US); Daniel Kuelzer, Munich (DE); and Alaa Mourad, Munich (DE)
Assigned to Bayerische Motorenwerke Aktiengesellschaft, Munich (DE)
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Filed on Dec. 14, 2021, as Appl. No. 17/644,133.
Prior Publication US 2023/0188930 A1, Jun. 15, 2023
Int. Cl. H04W 4/02 (2018.01); H04W 4/40 (2018.01)
CPC H04W 4/023 (2013.01) [H04W 4/40 (2018.02)] 14 Claims
OG exemplary drawing
 
1. A method for accessing a functionality of a vehicle via a mobile device, the method comprising:
generating, by the vehicle using a first radio access technology (RAT), a beacon signal;
sending, using the first RAT, a ranging intent message from the mobile device to the vehicle when a power measurement of the beacon signal at the mobile device exceeds a threshold;
initiating, by the vehicle and using a second RAT, a ranging session for localizing the mobile device upon receipt of the ranging intent message;
upon initiating the ranging session, sending a ranging response message from the vehicle to the mobile device using the first RAT, the ranging response message indicating whether the mobile device is inside or outside at least one operational localization range of the vehicle; and
optimizing the threshold for the ranging intent message based on the ranging response message.