Patent ID: 8077676

Claim:
A method of determining band availability for a WRAN network comprising: simultaneously receiving wirelessly analog signals within a predetermined range of frequencies, the predetermined range of frequencies comprising a plurality of frequencies; modifying the analog signals to provide digital signals, the digital signals, the digital signals being characterized in a frequency domain; determining a plurality of signal spectral amplitudes of the digital signals, each of the plurality of signal spectral amplitudes associated with a different frequency of the plurality of frequencies, wherein determining the plurality of signal spectral amplitudes comprises performing a time-domain to frequency-domain transform over the plurality of frequencies; comparing the plurality of signal spectral amplitudes to reference levels at the plurality of frequencies; and determining a band availability for wireless communication at the predetermined range of frequencies, determining band availability comprising determining whether the plurality of signal spectral amplitudes are indicative of a transmission type different from the WRAN network based on the comparing.