Noise ingress detection
First Claim
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1. A method comprising:
- detecting changes in post-equalization filter coefficients of each of a plurality of devices connected to a network;
determining, for each of the plurality of devices, multiple possible attenuation levels of noise transmitted to that device from respective multiple possible ingress locations in the network; and
identifying one of the multiple possible ingress locations as a location where ingress of the noise occurred based on the changes in the post-equalization filter coefficients of each of the plurality of devices and the multiple possible attenuation levels of the noise.
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Abstract
Methods and systems are provided for detection of noise ingress into a network. In an aspect, multiple access devices on the network are analyzed for noise ingress. In another aspect, using characterization data of components in the network and the detection of the noise at the access devices, the location of the noise ingress can be determined.
40 Citations
19 Claims
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1. A method comprising:
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detecting changes in post-equalization filter coefficients of each of a plurality of devices connected to a network; determining, for each of the plurality of devices, multiple possible attenuation levels of noise transmitted to that device from respective multiple possible ingress locations in the network; and identifying one of the multiple possible ingress locations as a location where ingress of the noise occurred based on the changes in the post-equalization filter coefficients of each of the plurality of devices and the multiple possible attenuation levels of the noise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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receiving multiple iterations of network characterization data over respective multiple iterations of time from each of a plurality of devices connected to a network; detecting a level of noise received at each of the plurality of devices based on a difference between two of the multiple iterations of the network characterization data; determining attenuation levels of the noise at each of the plurality of devices for multiple possible locations of noise ingress in the network; and identifying a location of ingress of the noise into the network from among the multiple possible locations based on the level of noise received at each of the plurality of devices and the attenuation levels of the noise at each of the plurality of devices. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method comprising:
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receiving multiple iterations of network characterization data over respective multiple iterations of time from each of a plurality of devices connected to a network; detecting, for each of the plurality of devices, a difference between two of the iterations of the network characterization data; and identifying a location of ingress of noise into the network based on the detected difference for each of the plurality of devices and based on locations of the plurality of devices in the network, wherein the network characterization data includes post-equalization filter coefficients for each of the plurality of devices.
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17. One or more memory devices storing machine-readable instructions that when executed by one or more processors cause an apparatus to:
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receive multiple iterations of network characterization data over respective multiple iterations of time from each of a plurality of devices connected to a network; detect a level of noise received at each of the plurality of devices based on a difference between two of the multiple iterations of the network characterization data; determine attenuation factors associated with signal paths from multiple possible locations of noise ingress in the network to each of the plurality of devices; and identify one of the multiple possible locations as a location where the noise ingress occurred based on the detected level of noise received at each of the plurality of devices and the attenuation factors. - View Dependent Claims (18)
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19. One or more memory devices storing machine-readable instructions that when executed by one or more processors cause an apparatus to:
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receive multiple iterations of network characterization data over respective multiple iterations of time from each of a plurality of devices connected to a network; detect, for each of the plurality of devices, a difference between two of the iterations of the network characterization data; and identify a location of ingress of noise into the network based on the difference between the two iterations for each of the plurality of devices and based on locations of the plurality of devices in the network, wherein the network characterization data includes post-equalization filter coefficients for each of the plurality of devices.
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Specification