Method and System for Detecting QoS Anomaly

A method for detecting factors causing Quality of Service, QoS, anomaly, comprising:

• obtaining a QoS index of data stream transmission of a parent peer;
• detecting QoS anomaly of the parent peer according to the QoS index and a corresponding QoS index threshold;
• counting a QoS anomaly proportion of the associated peer statistically;
• and
• determining factors causing the QoS anomaly according to the QoS anomaly proportion of the associated peer.

A system for detecting factors causing QoS anomaly, comprising:

• a receiving unit (202), configured to receive a data stream;
• a parent peer QoS index calculating unit (212), configured to calculate a QoS index of a parent peer according to the received data stream, and detect QoS anomaly of the parent peer according to the QoS index of the parent peer and a corresponding QoS index threshold;
• an anomaly counting unit (214), configured to count a QoS anomaly proportion of an associated peer statistically;
• and
• an anomaly factor determining unit (216), configured to determine factors causing the QoS anomaly according to the QoS anomaly proportion of the associated peer.