A method and apparatus for fault location in communication network

Abstract

A fault location method in communication network includes: setting up a network topological information library, receiving fault alarm signals from said network, processing alarm signals passing through a single side disk layer and its NE layer based on the coherence among the fault alarm signals of layers, among which, the fault alarm signal processed on said single side disk layer is reported to its NE layer and the signals processed on the NE layer are reported to the communication network belonging to the NE layer as character fault alarm information, the location unit carries out fault location in terms of the given rule and based on the received character fault alarm information filtered by the NE.

Description

technical field [0001] The invention relates to a communication network, in particular to a fault location method and device used in the communication network. technical background [0002] After a communication network is put into use, various communication devices in the communication network and various transmission lines used to transmit signals may have unexpected failures at any time. [0003] Fault management is an important content of communication network management and an important index reflecting the level of communication network management. In fault management, only by accurately determining the location of the fault can the faulty communication equipment or transmission line be repaired in time to ensure the normal operation of the communication network. Therefore, fault location is a key to fault management. [0004] At present, there have been many related reports on the research of fault location technology. Among them, several typical fault location tech...

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Problems solved by technology

[0011] 4. Single network element fault location method

[0015] Among the several typical fault location technologies mentioned above, the manual testing method is not suitable for large-scale communication networks because it cannot protect the damaged services in real time and eliminate faults in a timely manner; while the channel correlation analysis method and central control network element Analysis method, because in the fault location, it is necessary to transmit a large number of fault alarm signals between the network elements as the basis for the judgment of the upstream network element or the main control network element, so if these two methods are used, it will not only prolong the fault location time, and the complex calculations make it difficult for these two methods to be applied in communication networks such as distributed control; although the single network element fault location method is a better fault location method in an all-optical network, but , because this method cannot be used in communication networks using SDH (Synchronous Digital Hierarchy) transmission mode, especially in communication networks that combine WDM (Wavelength Division Multiplexing) transmission mode and SDH transmission mode commonly used by network operators at present , so that the single network element fault location method is subject to certain restrictions in practical applications; although the case analysis method is accurate in location, it cannot locate fault types that are not in the case library, so this method cannot be used in some special occasions

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