Method and apparatus for automating the detection and clearance of congestion in a communication network

Abstract

A method and apparatus for enabling a network to determine the call volume rate versus the call blocking rate on a predefined time interval basis over multiple predefined time intervals are disclosed. For example, if call blocking rates do not show a progressive trend of decline as call volume rates decline over multiple predefined time intervals, an alarm can be generated and corrective actions to flush out congested signaling message queues can be initiated to return the network to normal operating conditions.

Description

[0001]This application is a continuation of U.S. patent application Ser. No. 11 / 240,897, filed Sep. 30, 2005, which is currently allowed and is herein incorporated by reference in its entirety.[0002]The present invention relates generally to communication networks and, more particularly, to a method and apparatus for automating the detection and clearance of congestion in communication networks, e.g., packet networks such as Voice over Internet Protocol (VoIP) networks.BACKGROUND OF THE INVENTION[0003]Service disruptions in a packet network, e.g., a VoIP network can occur as a result of mass calling events that produce overloads and subsequent queuing congestion of signaling messages that result in call blocking due to call set up signaling message processing delays. If the call volumes quickly subside then the network typically recovers and will soon begin processing calls at a normal rate. However, if the call volumes decline and return to normal but the corresponding call blockin...

AI Technical Summary

Problems solved by technology

Service disruptions in a packet network, e.g., a VoIP network can occur as a result of mass calling events that produce overloads and subsequent queuing congestion of signaling messages that result in call blocking due to call set up signaling message processing delays.

However, if the call volumes decline and return to normal but the corresponding call blocking rate continues to increase or even remain flat, then the network is suffering a congestion problem that requires corrective actions to be taken to flush out the congested signaling message queues before calls can be handled normally after the call volume rate returns to normal.

Images