System and method for countering distance manipulation attacks
AssigneesDENSO International America, Inc., Denso Corporation
InventorKyle Golsch
Life of this patent
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Abstract
A system and method provided for detecting or mitigating distance attacks against real-time location systems for determining a position of a remote device relative to an object or device. The system and method may utilize phase coherency in conjunction with a time of arrival estimate as a basis for detecting or mitigating distance attacks.
Claims25
A system for determining a distance between a remote device and an object, the system comprising:
- a first device disposed in a fixed position relative to the object, the first device including a first antenna system configured to receive and/or transmit communications from and/or to the remote device, the communications including a first tone signal that establishes coherence with respect to the communications between the first device and the remote device;
- a control system configured to direct the first device to determine a distance between the first device and the remote device based on the communications between the first antenna system and the remote device;
- and
- the control system configured detect an attack based on distortion in the communications between the first device and the remote device.
A system for determining a distance between a remote device and an object, the system comprising:
- a first device disposed in a fixed position relative to the object, the first device including a first antenna system configured to receive and/or transmit communications from and/or to the remote device, the communications including a first tone signal provided at least one of before and after a modulated data signal of the communications;
- a control system configured to direct the first device to determine a distance between the first device and the remote device based on the communications between the first antenna system and the remote device;
- and
- the control system configured detect an attack based on distortion in the communications between the first device and the remote device.
A method of detecting a distance attack between a first device and a remote device, the first device disposed in a fixed position relative to an object, the method comprising:
- communicating a modulated data signal between the remote device and the first device;
- communicating, before or after the modulated data signal, a first tone signal between the remote device and the first device;
- determining, based on the first tone signal, if a phase of the communications between the remote device and the first device corresponds to an expected phase;
- determining the distance attack is present based on failure of the phase of the communications to correspond to the expected phase;
- and
- determining, if the distance attack is absent, a distance between the first device and the remote device based on at least one of the modulated data signal and the first tone signal.
Dependencies are inferred from the claim text.