Apparatus and method for detecting a location of a wireless device

摘要

In at least one embodiment, an apparatus for determining a location of a portable wireless device in relation to a vehicle is provided. The apparatus comprises a first base station that includes a first transceiver for being positioned about a vehicle. The first transceiver is configured to operate at a first operating frequency for transmitting and receiving at least one first signal to and from the portable wireless device to provide a first distance of the portable wireless device with respect to the vehicle. The first operating frequency generally corresponds to a distance accuracy value and the first distance generally corresponds to an actual distance of the portable wireless device from the vehicle that is adjusted by the distance accuracy value.

主权项

1. An apparatus for determining a location of a portable wireless device in relation to a vehicle, the apparatus comprising:
a first base station including a first transceiver for being positioned about the vehicle, the first transceiver being configured to operate at a first operating frequency for transmitting and receiving at least one first signal to and from the portable wireless device to provide a first distance of the portable wireless device with respect to the vehicle; the first operating frequency corresponding to a distance accuracy value and the first distance generally corresponding to an actual distance of the portable wireless device from the vehicle that is adjusted by the distance accuracy value; a second base station including a second transceiver for being positioned about the vehicle, the second transceiver being configured to operate at a second operating frequency for transmitting and receiving at least one second signal to and from the portable wireless device to provide a second distance of the portable wireless device with respect to the vehicle; and a third base station including a third transceiver for being positioned about the vehicle, the third transceiver being configured to operate at a third operating frequency for transmitting and receiving at least one third signal to and from the portable wireless device to provide a third distance of the portable wireless device with respect to the vehicle,
wherein the second base station is further configured to wirelessly transmit a second distance signal indicative of the second distance to the first base station and the third base station is further configured to wirelessly transmit a third distance signal indicative of the third distance to the first base station, andwherein the first base station is further configured to perform trilateration with the first distance, the second distance, and the third distance to determine a zone in which the portable wireless device is positioned.