Method and system for aggregating WiFi signal data and non-WiFi signal data
View Patent ↗Methods of aggregating spectrum data captured from a narrowband radio to form a spectrum covering a much wider frequency band. Frequency data, such as FFT spectrum data captured from a narrowband receiver such as an IEEE 802.11 Wi-Fi receiver are combined to display representative real-time FFT, average FFT, and FFT duty cycle data of a wideband spectrum. Data is captured from narrow band radios such as access points, station monitors, or client devices on a wireless network. A wideband spectrum may be aggregated from data captured from one or from multiple devices. Data may be stored for later analysis and display.
1. A non-transitory machine readable medium storing instructions which, when executed by one or more hardware processors, causes performance of a set of operations comprising:
accumulating frequency-domain samples from a radio scanning a plurality of channels, the scanning generating a plurality of the frequency-domain samples for each of the plurality of channels;
categorizing the frequency-domain samples as either Wi-Fi samples or non-Wi-Fi samples;
for each of the plurality of channels:
selecting a first sample from among the Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel;
selecting a second sample from among the non-Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel; and
choosing a representative sample for the respective channel from among the first sample and the second sample based on a weighting parameter and respective signal strengths of the first and second samples; and
combining the representative samples of all of the plurality of channels to produce a spectrum display representing a combined spectrum across all of the plurality of channels.
2. The machine readable medium of claim 1 , wherein the first sample is selected based at least on a signal strength of the first sample exceeding a threshold value.
3. The machine readable medium of claim 1 , wherein the second sample is selected based at least on a signal strength of the second sample exceeding a threshold value.
4. The machine readable medium of claim 1 ,
wherein the frequency-domain samples are samples of signals received by the radio while scanning the plurality of channels that have been transformed to a frequency domain.
5. The machine readable medium of claim 4 ,
wherein the frequency-domain samples are fast-Fourier transform (FFT) samples.
6. The machine readable medium of claim 2 ,
wherein, for each of the plurality of channels, the first sample is selected because the signal strength thereof is a highest signal strength among the Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel.
7. The machine readable medium of claim 3 ,
wherein, for each of the plurality of channels, the second sample is selected because the signal strength thereof is a highest signal strength among the non-Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel.
8. The machine readable medium of claim 1 ,
wherein, for each of the plurality of channels, the choosing the representative sample for the respective channel from among the first sample and the second sample includes:
adding the weighting parameter to the signal strength of the second sample,
choosing the first sample if the signal strength thereof exceeds the signal strength of the second sample plus the weighting parameter;
choosing the second sample if the signal strength thereof plus the weighting parameter exceeds the signal strength of the first sample.
9. A system comprising:
at least one hardware processor;
the system being configured to perform operations comprising:
accumulating frequency-domain samples from a radio scanning a plurality of channels, the scanning generating a plurality of the frequency-domain samples for each of the plurality of channels;
categorizing the frequency-domain samples as either Wi-Fi samples or non-Wi-Fi samples;
for each of the plurality of channels:
selecting a first sample from among the Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel;
selecting a second sample from among the non-Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel; and
choosing a representative sample for the respective channel from among the first sample and the second sample based on a weighting parameter and respective signal strengths of the first and second samples; and
combining the representative samples of all of the plurality of channels to produce a spectrum display representing a combined spectrum across all of the plurality of channels.
10. The system of claim 9 , wherein the first sample is selected based at least on a signal strength of the first sample exceeding a threshold value.
11. The system of claim 9 , wherein the second sample is selected based at least on a signal strength of the second sample exceeding a threshold value.
12. The system of claim 9 ,
wherein the frequency-domain samples are samples of signals received by the radio while scanning the plurality of channels that have been transformed to a frequency domain.
13. The system of claim 12 ,
wherein the frequency-domain samples are fast-Fourier transform (FFT) samples.
14. The system of claim 10 ,
wherein, for each of the plurality of channels, the first sample is selected because the signal strength thereof is a highest signal strength among the Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel.
15. The system of claim 11 ,
wherein, for each of the plurality of channels, the second sample is selected because the signal strength thereof is a highest signal strength among the non-Wi-Fi samples of the plurality of frequency-domain samples that correspond to the respective channel.
16. The system of claim 9 ,
wherein, for each of the plurality of channels, the choosing the representative sample for the respective channel from among the first sample and the second sample includes:
adding the weighting parameter to the signal strength of the second sample,
choosing the first sample if the signal strength thereof exceeds the signal strength of the second sample plus the weighting parameter; and
choosing the second sample if the signal strength thereof plus the weighting parameter exceeds the signal strength of the first sample.