Low-energy radio frequency tag for performing a vehicle function
AssigneeGM Global Technology Operations LLC
InventorsAmanda J. Kalhous, Norman J. Weigert
Life of this patent
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Abstract
A low-energy transceiver tag is described, as well as methods of using the low-energy transceiver tag to enable secure communication with a vehicle. The low-energy transceiver tag includes a substrate, and electronic circuitry carried by the substrate having a transceiver circuit coupled to a power circuit. The transceiver circuit may be configured to transmit a preconfigured answer signal in response to receiving a query signal. In addition, the preconfigured answer signal may be a low-energy response associated with a remotely-located trust anchor.
Claims18
A low-energy transceiver tag, comprising:
- a substrate;
- and
- electronic circuitry carried by the substrate having a transceiver circuit coupled to a power circuit,
- wherein the transceiver circuit is configured to transmit a preconfigured answer signal in response to receiving a query signal,
- wherein the preconfigured answer signal is a low-energy response associated with a remotely-located trust anchor.
A method of secure communication between a vehicle and a mobile device, comprising the steps of:
- initiating short range wireless communication (SRWC) between a vehicle and a mobile device;
- determining whether the mobile device is authorized to command vehicle functions, wherein the determining step includes:
- sending the mobile device a challenge query;
- receiving a challenge response to the challenge query from the mobile device, wherein the mobile device acquires the challenge response from a radio frequency (RF) tag and then gates the challenge response to the vehicle via SRWC;
- attempting to validate the challenge response at the vehicle;
- and
- if the challenge response is validated at the vehicle, performing a vehicle function based on the validation.
A method of providing a challenge response from a radio frequency (RF) tag to a mobile device, comprising the steps of.
- scavenging RF power from the proximately-located mobile device;
- storing the scavenged power in a storage device of the RF tag;
- receiving a wireless prompt at the RF tag from one of:
- the mobile device or a vehicle transceiver,
- wherein if the wireless prompt is received from the mobile device, it occurs after:
- the mobile device and a vehicle have initiated short range wireless communication (SRWC), and
- the vehicle has sent the mobile device a challenge query to authenticate the mobile device;
- and wherein if the wireless prompt is received from the vehicle transceiver it occurs after the RF tag is positioned within a near-field range of the vehicle transceiver;
- in response to the wireless prompt, transmitting a challenge answer using the power stored in the storage device.
Dependencies are inferred from the claim text.