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ANOMALY DETECTION METHOD AND SYSTEM AND MAINTENANCE METHOD AND SYSTEM

  • US 20090052330A1
  • Filed: 06/02/2006
  • Published: 02/26/2009
  • Est. Priority Date: 06/02/2005
  • Status: Active Grant
First Claim
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1. An anomaly detection method characterized by comprising the steps of:

  • obtaining, on the basis of a probability distribution of a communication quality index in a normal operation of a communication network, an upper probability that the communication quality index during a measurement period becomes lower than a measured value; and

    detecting anomaly of the communication network by using the value of the obtained upper probability.

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