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Detecting plant degradation using peer-comparison

  • US 9,197,886 B2
  • Filed: 03/13/2014
  • Issued: 11/24/2015
  • Est. Priority Date: 03/13/2013
  • Status: Active Grant
First Claim
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1. A computing device for detecting performance degradation in a hybrid fiber-coaxial (HFC) cable plant having customer premises equipment (CPE) elements, active elements, and passive elements, comprising:

  • a memory device resident in the computing device; and

    a processor disposed in communication with the memory device, the processor configured to;

    collect radio frequency (RF) metric values for the CPE elements, the active elements, and the passive elements;

    compute absolute deviation values of the RF metric values for the CPE elements, the active elements, and the passive elements, wherein each absolute deviation value is from a reference value associated with the element;

    compute relative hierarchical deviation values of the RF metric values for the CPE elements, the active elements, and the passive elements;

    compute relative peer deviation values of the RF metric values for the CPE elements, the active elements, and the passive elements;

    compare the absolute deviation value, relative hierarchical deviation value, and relative peer deviation value for each CPE element, each active element, and each passive element to at least one threshold value; and

    send an alarm message to an operator when the absolute deviation value, relative hierarchical deviation value, or relative peer deviation value for any CPE element, any active element, or any passive element exceeds said at least one threshold value.

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