MOBILE DEVICE DETECTION APPARATUS AND MOBILE DEVICE DETECTION METHOD

A mobile device detection apparatus is mounted on a vehicle equipped with a plurality of antennas, transmits a request signal for requesting a response to a mobile device that exists within a range communicable with the vehicle from a predetermined antenna among the plurality of antennas, receives a response signal returned from the mobile device to detect an existence of the mobile device, transmits a reply request signal for requesting a reply signal to the mobile device when the existence of the mobile device is detected, and receives the reply request signal from the mobile device using the plurality of antennas to detect an existence position of the mobile device.