Expense message processing apparatus and processing method thereof

Abstract

The disclosed device includes following parts: overhead parsing unit carries out protocol analysis processing for overhead message in order to obtain operation attendance management (OAM) information; data packing unit packs OAM inside data frame, and sends the package to relevant functional entities inside devices through bus; data unpacking unit parses out packed OAM feedback information generated by relevant functional entities inside devices from the said data frame sent through bus; after carrying out protocol analysis processing for OAM feedback information, overhead generating unit, packs overhead generated to overhead bytes corresponding to signal in synchronous transmission mode. Thus the new signal carries new overhead message. The invention also discloses a method for processing overhead message. Features are: reducing wiring load on backboard, raising flexibility for treating overhead message, and lowering cost of device.

Description

technical field [0001] The present invention relates to the technical field of optical fiber communication, and further relates to an overhead message processing device and a processing method thereof in an optical fiber communication system. Background technique [0002] Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) is a digital communication system in optical fiber communication systems, which is a set officially recommended by the International Telecommunication Union-Telecommunications Standardization Sector (ITU-T, International Telecommunications Union Telecommunications Standardization Sector) in 1988 international standard. In the optical fiber communication system, SDH is not only a networking principle, but also a set of multiplexing methods; therefore, based on SDH technology, a flexible, reliable and controllable national telecom optical transmission network and even the world's telecom optical transmission can be built network. The optical...

AI Technical Summary

Problems solved by technology

[0022] 1) The overhead bus connects each line board and the overhead message analysis and processing unit through the backplane, so when there are multiple line boards, there will be a large number of overhead buses, resulting in excessive wiring pressure on the backplane, and also Increase the wiring density and number of layers of the backplane, thereby increasing the cost of the system, and also negatively affecting the quality of the transmitted signal;

[0023] 2) There must be a large number of extraction units for extracting overhead messages from each overhead bus in the overhead message analysis and processing unit. If hardware is used to set the extraction unit corresponding to each overhead bus in the overhead message analysis and processing unit , each extraction unit is independent of each other and cannot be shared, thus causing an increase in system cost

[0024] 3) The overhead message cannot be directly transmitted between the two line boards, it must be analyzed and processed by the overhead message analysis and processing unit, so that the system application is not flexible enough, which has obvious shortcomings in the protection of the ring multiplex section

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