Analyzing a particular wireless signal based on characteristics of other wireless signals

摘要

The present disclosure discloses a system and method for classifying Wi-Fi signals from Fourier transform samples. Generally, classifying Wi-Fi signals from Fourier transform samples includes: collecting and dividing Fourier transform samples into frequency blocks; determining the bandwidth for the Fourier transform sample; and determining whether the Fourier transform sample corresponds to a narrowband signal. Further, if a determination is made that the Fourier transform sample does not correspond to a narrowband signal, channel utilization is calculated based on a determination that the FFT sample corresponds to a Wi-Fi signal. If it is determined that the Fourier transform sample corresponds to a narrowband signal, then a determination is made that the FFT sample corresponds to a Wi-Fi signal based on certain criteria. The certain criteria may include one or more of a slope value, a number of sub-peak bins, an analysis of adjacent channels, characteristic matching, or other criteria.

主权项

1. A non-transitory computer readable medium comprising instructions which, when executed by one or more hardware processors, causes performance of operations comprising:
obtaining samples corresponding to a first wireless signal, wherein the first wireless signal is received in a first time period; determining a signal strength of the first wireless signal from the samples corresponding to the first wireless signal received in the first time period; obtaining samples corresponding to a second wireless signal, wherein the second wireless signal is received in a second time period different than the first time period; determining a signal strength of the second wireless signal from the samples corresponding to the second wireless signal received in the second time period; responsive to determining that a difference between the signal strengths of the first and second wireless signals is greater than a threshold, determining that the first wireless signal is transmitted from a first source and that the second wireless signal is transmitted from a second source different from the first source; obtaining samples corresponding to a third wireless signal received in a third time period; determining a signal strength of the third wireless signal from the samples corresponding to the third wireless signal received in the third time period; determining a difference between the signal strengths of the first and third wireless signals is less than the threshold; and estimating that a duration of a wireless signal burst from the first source is longer than the first time period.