Patent ID: 11972649
Assignee: DENSO CORPORATION
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. A method for determining a location of a portable device relative to a vehicle, said method comprising:
a system device configured to determine the location of the portable device relative to the vehicle;
wirelessly communicating, at a first transmission rate that is variable, first communications with the portable device at a frequency of 2 GHz or greater,
wirelessly communicating, at a second transmission rate, second communications with the portable device at a frequency of 2 GHz or greater, wherein the first transmission rate is different from the second transmission rate;
determining, based on a first sensed characteristic of the first communications with the portable device at a frequency of 2 GHz or greater according to a first transmission rate that is variable, first information indicative of a location of the portable device relative to the first transceiver;
obtaining, via the second communications with the portable device at a frequency of 2 GHz or greater according to a second transmission rate that is different from the first transmission rate that is variable, second information pertaining to at least one of authorization and authentication of the portable device relative to the vehicle;
determining the location of the portable device based on the first information, whereby the location of the portable device is based on the first sensed characteristic of the first communications at the frequency of 2 GHz or greater; and
determining at least one of authorization and authentication of the portable device relative to the vehicle based on the second information obtained via the second communications.