Event correlation in telecommunications networks
First Claim
1. A method of correlating events occurring in a telecommunications network formed from individual network elements, at least some of the network elements being represented in a computer by individual program modules, each program module having a set of data relating to the network elements which it represents and, in the case of at least some of said program modules, the data set of the module includinga) a list of network elements having incoming associations with the network element represented by the module in respect to event correlation,b) a list of network elements having outgoing associations with the network element represented by the module with respect to event correlation, andc) a parameter indicating the state of activation of the program module at a point at which events can be correlated,said method comprising the steps of increasing the value of the activation parameter of a program module when an event occurs in the network element represented by the program module, varying the value of the activation parameter of the modules in accordance with the lists of associations between the network elements in a predetermined manner, and producing a positive correlation report in respect of an individual program module when the level of its activation parameter exceeds a predetermined threshold.
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Abstract
A telecommunication network is monitored for fault conditions. In order to correlate the alarms to established which alarms have a common cause, a logical connectivity model is used in which a logical property is transferred between related logical elements in response to the element being alarmed. If as a result of such transfer the value of the logical property exceeds a threshold value for any element a correlation is established and the element highlighted as the probable cause of the alarms.
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Citations
12 Claims
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1. A method of correlating events occurring in a telecommunications network formed from individual network elements, at least some of the network elements being represented in a computer by individual program modules, each program module having a set of data relating to the network elements which it represents and, in the case of at least some of said program modules, the data set of the module including
a) a list of network elements having incoming associations with the network element represented by the module in respect to event correlation, b) a list of network elements having outgoing associations with the network element represented by the module with respect to event correlation, and c) a parameter indicating the state of activation of the program module at a point at which events can be correlated, said method comprising the steps of increasing the value of the activation parameter of a program module when an event occurs in the network element represented by the program module, varying the value of the activation parameter of the modules in accordance with the lists of associations between the network elements in a predetermined manner, and producing a positive correlation report in respect of an individual program module when the level of its activation parameter exceeds a predetermined threshold.
Specification