Relay attack inhibiting

Patent metadata

Field	Value
Publication number	US-9802574-B2
Application number	US-201414488254-A
Country	US
Kind code	B2
Filing date	Sep 16, 2014
Priority date	Sep 16, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

An apparatus in a wireless vehicle-access system, that includes a vehicle and a fob, includes: a vehicle-authorization parameter module configured to obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises at least one of movement of the fob, a received directional signal, or a received audible signal; and a vehicle function compatibility module configured to: determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle; inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle.

First claim

The invention claimed is:

1. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises movement of the fob;
determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle;
inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and
permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle;

wherein the desired function of the vehicle is vehicle starting; and
wherein:
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is a fob speed being below a vehicle-starting threshold;
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is spatial fob motion being consistent with movement of a seat of the vehicle, the spatial fob motion comprising a direction or a magnitude of fob motion, or a combination thereof; or
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is the spatial fob motion being consistent with a user of the fob sitting in the vehicle; or
a combination of two or more of these.

2. The apparatus of claim 1 , wherein the spatial fob motion being consistent with movement of the seat of the vehicle comprises the spatial fob motion differing from concurrent movement of at least a portion of the seat by less than a fob/seat-movement-differential threshold.

3. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises movement of the fob;
determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle;
inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and
permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle;

wherein the desired function of the vehicle is vehicle starting, and wherein the processor is configured to determine that the movement of the fob is inconsistent with the desired function if the movement of the fob is spatial cyclic up and down fob motion indicative of pedestrian motion.

4. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises movement of the fob;
determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle;
inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and
permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle;

wherein the desired function of the vehicle is vehicle driving, and wherein:
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is spatial fob motion being consistent with a user of the fob sitting in the vehicle, the spatial fob motion comprising a direction or a magnitude of fob motion, or a combination thereof;
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is a fob speed differing by less than a speed-differential threshold relative to a speed of the vehicle; or
the processor is configured to determine that the movement of the fob is consistent with the desired function if the movement of the fob is the spatial fob motion being consistent with movement of a seat of the vehicle; or
a combination of two or more of these.

5. The apparatus of claim 4 , wherein the spatial fob motion being consistent with movement of the seat of the vehicle comprises the spatial fob motion differing from concurrent movement of at least a portion of the seat by less than a fob/seat-movement-differential threshold.

6. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises movement of the fob;
determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle;
inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and

permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle;
wherein the desired function of the vehicle is vehicle driving, and wherein the processor is configured to determine that the movement of the fob is inconsistent with the desired function if the movement of the fob is spatial cyclic up and down fob motion indicative of pedestrian motion.

7. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises a received directional signal;
determine whether the value of the vehicle-authorization parameter is consistent or inconsistent with a desired function of the vehicle;
inhibit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be inconsistent with the desired function of the vehicle; and

permit the desired function of the vehicle in response to the value of the vehicle-authorization parameter being determined to be consistent with the desired function of the vehicle;
wherein the processor is configured to determine that the value of the vehicle-authorization parameter is consistent with the desired function if the value of the vehicle-authorization parameter exceeds a non-zero directional-signal-intensity threshold.

8. An apparatus in a wireless vehicle-access system that includes a vehicle and a fob, the apparatus comprising:
a memory; and
a processor communicatively coupled to the memory and configured to:
obtain a value of a vehicle-authorization parameter wherein the vehicle-authorization parameter comprises a received directional signal;
determine whether the value of the vehicle-a

Assignees

• Qualcomm Inc

Inventors

• Jakobsson Bjorn Markus

Classifications

• B60R25/31

  of human presence inside or outside the vehicle · CPC title

• B60R25/24 Primary

  using electronic identifiers containing a code not memorised by the user · CPC title

• B60R25/241 Primary

  whereby access privileges are related to the identifiers · CPC title

• G07C9/00309

  operated with bidirectional data transmission between data carrier and locks · CPC title

• B60R25/209

  Remote starting of engine · CPC title