Patent ID: 8065568
Filing Date: 2011-11-22
Classification: H04L

Abstract:
1. In a communication network for which contents of an alarm issued at the time of a failure of communication are recorded, a communication network failure detection system, comprising: an occurrence intensity calculating unit for a more significant factor for calculating an occurrence intensity of said more significant factor causing an alarm by analyzing the recording contents of the alarm; an occurrence intensity probability distribution calculating unit for calculating a probability distribution of an occurrence intensity of said more significant factor in said communication network at a normal state; a degree of abnormality calculating unit for calculating, with respect to a calculated occurrence intensity of said more significant factor, a degree of probability deviation from an occurrence intensity probability distribution of said more significant factor at said normal state as a degree of abnormality; and a failure detecting unit for detecting a failure derived from said more significant factor in said communication network by comparing said degree of abnormality and a threshold value applied in advance.