Patent ID: 9602376
Date: 2017-03-21
CPC Classifications: H04L

Claim:
1. A method for detecting periodic impairments of media streams of real-time communication sessions within a packet-switched network, the method comprising: monitoring by a passive monitoring system a plurality of media streams, wherein monitoring comprises continuously generating, for predefined time intervals, quality data records for each monitored media stream, wherein each quality data record is indicative of a determined media stream quality of the respective media stream within the respective predefined time interval; generating for each media stream a frequency distribution indicative of the number of good quality data records between respective pairs of quality data records indicative of an impairment of the respective media stream in their corresponding time intervals; and determining whether a maximum exists in the media stream's frequency distribution for a given number of consecutive good quality data records, wherein in case a maximum exists, the respective media stream is determined to be periodically impaired and said given number of consecutive good quality data records for which the maximum exists indicates the periodicity in the impairment of the media stream.