Patent · US Active

Network failure detection method and network failure detection system

US8001583B2 · kind B2 · utility

26Cited by
0References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 8, 2006
Grant dateAug 16, 2011
Priority date
Expiry dateMay 13, 2028

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L63/1425
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

A system provides definitions of network states, and identifies a cause for the anomaly upon detection. A traffic measuring portion (characteristic quantity generating portion) counts the number of packets/time slot classified by traffic type with respect to network traffic, generating a characteristic quantity; a memory portion stores information about the characteristic quantity; a portion calculates correlation coefficients between each pair of characteristic quantities classified by traffic type; a portion generates a histogram from correlation coefficients; a portion for determining the severity of an anomaly based on the histogram; a portion evaluates the similarity of an anomaly of interest to a reference anomaly using the occurrence probabilities of correlation coefficients; and a portion assigns a color to each pixel according to its occurrence probability value, generating an n×n picture. Visualization of network state is achieved using probability distribution vectors derived from correlation coefficients obtained from each characteristic quantities pair.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.