Nortel Networks Corporation

Carlos Motta

Carlos A Molina

Channarong Tontiruttananon

Anabella Arosemena

Kuntaporn Saiyos

Provided is a system and method for controlling overload in a telecommunications network. The network carries a traffic load that may include traffic of multiple classes and mixed types. The method determines whether the traffic load has exceeded one or more overload thresholds. Each threshold is associated with a class or type of traffic. If one or more of the thresholds have been exceeded, the method sets a timer associated with the exceeded threshold. Each timer has a state (e.g., expired or not expired) and the states of the timers are used to look up a function for controlling the overload. The function is used to alter the traffic flow of one or more of the traffic classes.

Overload control system and method for a telecommunications system

Provided is a system and method for controlling overload in a telecommunications network. The network carries a traffic load that may exceed a maximum resource capacity and drive the network into an overload state. The method determines whether an overload state has occurred by comparing a current resource capacity to an overload onset threshold. If the threshold has been exceeded, the method blocks a certain percentage of traffic. An incrementally increasing percentage of traffic is blocked until the resource capacity crosses an overload abatement level. The method then incrementally decreases the percentage of blocked traffic until no traffic is blocked.

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Richardson, TX, United States of America

Carlos Motta