Patent ID: 9178794
Filing Date: 2015-11-03
Classification: H04L

Abstract:
1. A communication quality monitoring system, comprising: a normal monitoring route planning unit configured to determine a normal monitoring route for sensing an event of a quality degradation having occurred in a quality monitor area of a network formed by a packet transfer apparatus whose packet transfer route is controlled by an external controller; a quality degrading point monitoring route planning unit configured to determine, when a quality degradation is sensed in the network using the normal monitoring route, area locating monitoring routes that systematically eliminate sections of the normal monitoring route upon which the quality degradation was sensed, for narrowing down possible areas of the normal monitoring route upon which the quality degradation was sensed and to locate, by a process of elimination, a communication quality degradation point along the normal monitoring route upon which the quality degradation was sensed; a forwarding rule configuring unit configured to set the normal monitoring route and the area locating monitoring routes as packet transfer routes; a communication quality measuring unit configured to measure a communication quality by sensing a communication condition of the normal monitoring route and the area locating monitoring routes; and a communication quality degrading point inferring unit configured to infer an occurrence of a quality degradation and an area of the occurrence of the quality degradation based on a result of the measuring of the communication quality, wherein: