Intrusion Detection and Radio Fingerprint Tracking

摘要

A transmitter is configured to change its unique radio signature enough to defeat radio fingerprinting identification without destroying the content of the transmissions. The transmitter may be configured for defeating both transient-signal fingerprinting and steady-state fingerprinting. The transmitter may be configured to obfuscate transient detection. The transmitter may continuously vary spectral, amplitude, and/or phase characteristics of its transmissions to defeat radio fingerprinting. The transmitter may pair radio fingerprints with subscriber terminal identification codes (e.g., MAC addresses or SMSIs) for generating different radio identities. The transmitter may measure another transmitter's radio fingerprint, and, compensating for its own radio fingerprint, spoof the measured radio fingerprint.

主权项

1. In a wireless transmitter having a unique radio frequency (RF) fingerprint, a method for obfuscating its unique RF fingerprint, comprising:
determining a threshold of signal distortion that impedes radio signature tracking while providing an acceptable amount of degradation to data transmissions; and synthesizing a distortion of the unique RF fingerprint that is at or below the threshold for generating a new radio signature.