Enhanced automotive passive entry
First Claim
1. A method of enabling an operation by a vehicle involving a mobile device, the method comprising:
- receiving a first set of signal values measured using one or more device radiofrequency (RF) antennas of the mobile device, the first set of signal values providing one or more first signal properties of signals in a first frequency range emitted from one or more vehicle RF antennas of the vehicle, wherein the one or more first signal properties of a signal change with respect to a distance between a device RF antenna that received the signal and a vehicle RF antenna that emitted the signal;
receiving a second set of signal values measured using one or more device magnetic antennas of the mobile device, the second set of signal values providing one or more second signal properties of signals in a second frequency range lower than the first frequency range emitted from one or more vehicle magnetic antennas of the vehicle, wherein the one or more second signal properties of a signal change with respect to a distance between a device magnetic antenna that received the signal and a vehicle magnetic antenna that emitted the signal;
determining a location of the mobile device relative to the vehicle using the one or more first signal properties of the first set of signal values and the one or more second signal properties of the second set of signal values that change with respect to a relative distance between the mobile device and the vehicle; and
providing the location of the mobile device relative to the vehicle to a control unit of the vehicle, thereby enabling the control unit to perform a prescribed operation of the vehicle based on the location of the mobile device relative to the vehicle.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and devices are provided for allowing a mobile device (e.g., a key fob or a consumer electronic device, such as a mobile phone, watch, or other wearable device) to interact with a vehicle such that a location of the mobile device can be determined by the vehicle, thereby enabling certain functionality of the vehicle. A device may include both RF antenna(s) and magnetic antenna(s) for determining a location of a mobile device relative to the vehicle. Such a hybrid approach can provide various advantages. Existing magnetic coils on a mobile device (e.g., for charging or communication) may be re-used for distance measurements that are supplemented by the RF measurements. Any device antenna may provide measurements to a machine learning model that determines a region in which the mobile device resides, based on training measurements in the regions.
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Citations
21 Claims
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1. A method of enabling an operation by a vehicle involving a mobile device, the method comprising:
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receiving a first set of signal values measured using one or more device radiofrequency (RF) antennas of the mobile device, the first set of signal values providing one or more first signal properties of signals in a first frequency range emitted from one or more vehicle RF antennas of the vehicle, wherein the one or more first signal properties of a signal change with respect to a distance between a device RF antenna that received the signal and a vehicle RF antenna that emitted the signal; receiving a second set of signal values measured using one or more device magnetic antennas of the mobile device, the second set of signal values providing one or more second signal properties of signals in a second frequency range lower than the first frequency range emitted from one or more vehicle magnetic antennas of the vehicle, wherein the one or more second signal properties of a signal change with respect to a distance between a device magnetic antenna that received the signal and a vehicle magnetic antenna that emitted the signal; determining a location of the mobile device relative to the vehicle using the one or more first signal properties of the first set of signal values and the one or more second signal properties of the second set of signal values that change with respect to a relative distance between the mobile device and the vehicle; and providing the location of the mobile device relative to the vehicle to a control unit of the vehicle, thereby enabling the control unit to perform a prescribed operation of the vehicle based on the location of the mobile device relative to the vehicle. - View Dependent Claims (2, 3, 4, 5, 14)
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6. A method for enabling an operation by a vehicle involving a mobile device, the method comprising:
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receiving a set of signal values measured using one or more device antennas of the mobile device, the set of signal values providing one or more signal properties of signals from a plurality of vehicle antennas having various locations in the vehicle, wherein the one or more signal properties of a signal change with respect to a distance between a device antenna of the mobile device that received the signal and a vehicle antenna that emitted the signal; storing a machine learning model that classifies a location of the mobile device as being within a region of a set of pre-defined regions in a vicinity of the vehicle based on the one or more signal properties of the signals from the plurality of vehicle antennas, the set of pre-defined regions including a first subset of one or more regions outside the vehicle and a second subset of one or more regions outside the vehicle, the machine learning model being trained using various sets of signal values measured at various locations across the set of pre-defined regions; providing the set of signal values to the machine learning model to obtain a current classification of a particular region of the set of pre-defined regions within which the mobile device is currently located; and providing the particular region to a control unit of the vehicle, thereby enabling the control unit to perform a prescribed operation of the vehicle. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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15. A mobile device comprising:
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one or more radiofrequency (RF) reception antennas; an RF ranging circuit coupled with the one or more RF reception antennas, the RF ranging circuit configured to; analyze signals in a first frequency range from the one or more RF reception antennas; and provide one or more first signal values related to a distance or an orientation of the mobile device relative to one or more RF source antennas in a vehicle; one or more magnetic antennas; and a magnetic measurement circuit coupled with the one or more magnetic antennas, the magnetic measurement circuit configured to; analyze signals in a second frequency range lower than the first frequency range from the one or more magnetic antennas; and provide one or more second signal values related to a distance of the mobile device relative to one or more magnetic source antennas in the vehicle. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification