Alarm correlation in a large communications network
October 28, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethods and systems for alarm correlation and fault localization in communication networks Method and system for monitoring telecommunication network element alarms Alarm correlation system for a telephone network Relative synchronization system for a telephone network Event correlation in telecommunications networks Dynamic network topology determination Event correlation Method and apparatus for inter-domain alarm correlation Topology-based fault analysis in telecommunications networks Fault correlation system and method in packet switching networks InventorsAssigneeApplicationNo. 181583 filed on 10/28/1998US Classes:714/47, Performance monitoring for fault avoidance370/216FAULT RECOVERYExaminersPrimary: Iqbal, NadeemAttorney, Agent or FirmForeign Patent References
International ClassG06F 011/30AbstractA system and method of correlating alarms from a plurality of network elements (NEs) in a large communications network. A plurality of uncorrelated alarms are collected by an alarm collector from alarm reporters. An alarm correlator then partitions the alarms into correlated alarm clusters such that alarms of one cluster have a high probability that they are caused by one network fault. The partitioning of the alarms is performed by creating alarm sets, expanding the alarm sets into alarm domains, and merging the alarm domains into alarm clusters if predefined conditions are met. The sets are formed by selecting an alarmed NE at the highest network hierarchy level which is not tagged, finding all of its contained NEs, and finding NEs that are peer-related to those contained NEs that are in an alarmed state. The sets are expanded into domains by finding NEs that are not in an alarmed state which contain the highest level alarmed NE in each alarm set. The domains are merged into one alarm cluster if the two domains have at least one common NE, at least one of the common NEs is not tagged, and the majority of the NEs contained by the non-tagged common NE are in an alarmed state.Other References
Field of SearchPerformance monitoring for fault avoidanceError detection or notification Of network Isolating failed storage location (e.g., sector remapping) Plural recovery data sets containing set interrelation data (e.g., time values or log record numbers) Fault locating (i.e., diagnosis or testing) Artificial intelligence (e.g., diagnostic expert system) Monitor recognizes sequence of events (e.g., protocol or logic state analyzer) Control flow state sequence monitored (e.g., watchdog processor for control-flow checking) State recovery (i.e., process or data file) FAULT RECOVERY DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION) Fault detection Redundant (e.g., added circuit or loop) With particular system function (e.g., temperature compensation, calibration) | |
