Attack detection for ultra-wideband high-rate pulse optimization
AssigneeInfineon Technologies AG
InventorsAjinder Pal Singh, Daniel Lee
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Abstract
Systems, methods, and circuitries are provided for determining the likelihood that a malicious signal component is present in a UWB signal. In one example, a UWB receiver device is configured to receive a UWB signal during a ranging round; correlate the received UWB signal with a reference STS template to generate a correlation output; based on the correlation output, compute a channel quality indicator that characterizes a noise level of the channel; compute an attack-detection figure of merit (A-D FOM) based on the channel quality indicator, a block error of the received UWB signal, or a frequency error of the received UWB signal; and provide data indicative of the A-D FOM to a controller device.
Claims20
A method, comprising:
- with a UWB receiver device,
- receiving a UWB signal during a ranging round;
- correlating the received UWB signal with a reference secure training sequence (STS) template to generate a correlation output;
- determining a distance between a transmitter of the received UWB signal based on the received UWB signal and the UWB receiver device based on the correlation output and one or more secure ranging parameters, wherein the one or more secure ranging parameters are received from a controller device;
- based on the correlation output, computing a channel quality indicator that characterizes a noise level of the channel;
- computing an attack-detection figure of merit (A-D FOM) based on the channel quality indicator, a block error of the received UWB signal, or a frequency error of the received UWB signal;
- and
- providing data indicative of the A-D FOM to the controller device, and
- with the controller device,
- receiving the data indicative of the A-D FOM from the UWB receiver device;
- and
- generating a security signal when the A-D FOM exceeds a threshold value.
A controller device, comprising a processor and a memory, the processor configured to, when executing instructions stored in the memory, cause the controller device to,
- receive data indicative of an attack-detection figure of merit (A-D FOM), wherein the A-D FOM is based on a correlation between a UWB signal received by a first UWB receiver device and a reference STS template, a block error of the UWB signal, or a frequency error of the UWB signal;
- and
- determine at least one optimized secure ranging parameter based on the A-D FOM;
- and
- provide the at least one optimized secure ranging parameter to a UWB receiver device for use in processing of subsequently received UWB signals.
The controller device of 8, wherein the processor is configured to cause the controller device to
- provide the at least one optimized secure ranging parameter to a second UWB receiver device for use in processing received UWB signals wherein the second UWB receiver device is different from the first UWB receiver device.
The controller device of 8, wherein the processor is configured to cause the controller device to
- tag the A-D FOM with an indication of a geographic location of the controller device to generate geo-tagged A-D FOM data;
- and
- transmit the geo-tagged A-D FOM data or data derived from the geo-tagged A-D FOM data to a second device that hosts a repository of tagged A-D FOM data.
The controller device of 8, wherein the processor is configured to cause the controller device to generate a security signal in response to the A-D FOM exceeding a threshold.
An ultra-wideband (UWB) receiver device comprising a processor and a memory, the processor configured to, when executing instructions stored in the memory, cause the device to:
- receive a UWB signal during a ranging round;
- correlate the received UWB signal with a reference secure training sequence (STS) template to generate a correlation output;
- based on the correlation output,
- compute a channel quality indicator that characterizes a noise level of the channel;
- and
- compute an attack-detection figure of merit (A-D FOM) based on the channel quality indicator, a block error of the received UWB signal, or a frequency error of the received UWB signal;
- and
- provide data indicative of the A-D FOM to a controller device.
Dependencies are inferred from the claim text.