Patent ID: 8472332
Filing Date: 2013-06-25
Classification: H04L

Abstract:
1. A quality deterioration detector apparatus for detecting deterioration in quality of a telecommunications network, comprising: a packet monitor for monitoring a packet flowing through the network; a quality information extractor for extracting a quality index of the network on a basis of the packet monitored; a determiner including an analyzer for analyzing a spectrum of a temporal change in the quality index; a first intelligent section having learned first results of spectral analyses performed beforehand on a packet monitored and coming only from a wired line and on a packet monitored and coming from a wireless line, said first intelligent section comparing results of an analysis of the spectrum of the temporal change currently performed with the first results, and determining whether the packet monitored comes only from the wired line or comes from the wireless line on the basis of a comparison result of said first intelligent section; and a quality deterioration detector for detecting deterioration in the quality of the network on the basis of the quality index, said quality deterioration detector determining, when the packet monitored comes from the wireless line, that the quality of the network is deteriorated if the quality index aperiodically decreases, and when the packet monitored comes only from the wired line, that the quality of the network is deteriorated if the quality index substantially decreases.