Patent ID: 8605695

Claim:
A wireless network device comprising: a spectral scan unit operable to generate a plurality of spectral data captures comprising time-frequency data and receive signal strength indicator (RSSI) data associated with an RF signal received at the wireless network device; and a classification unit operable to process the time-frequency data and RSSI data of each of the plurality of spectral data captures to determine whether each spectral data capture is a narrowband spectral data capture; wherein, in response to the classification unit determining that the plurality of spectral data captures are narrowband spectral data captures, the classification unit is operable to: for at least a subset of the plurality of narrowband spectral data captures, determine whether a narrowband spectral data capture is a first narrowband spectral data capture in a sequence of narrowband spectral data captures; in response to determining that the narrowband spectral data capture is the first narrowband spectral data capture, determine a narrowband burst start time associated with the first narrowband spectral data capture; and determine a narrowband signal type associated with the received RF signal based, at least in part, on the narrowband burst start time and a plurality of parameters associated with the narrowband spectral data captures.