Method for time slot partition and overhead processing of optical payload unit in light transmission network

Abstract

The present invention relates to a method for dividing the time slot and treating the spending of optical payload unit in the optical transport network, which comprises the steps of: A. confirming the time slot number of the optical payload unit in the payload area according to the character of the business signal, doing time slot division to the payload area and confirming the mapping mode of corresponding business of each time slot; B. expending the value of the payload structure identifying byte in the spending of the optical payload unit according to the dividing condition of the time slot, saving the mapping structure, time slot number, and the branch line port number and mapping mode corresponding to each time slot in the payload structure identifying byte; C. representing the undefined first to sixth bit assignment value as the multi-frame and distributing the spending loop spend by the optical payload unit in the spending of the optical payload unit. The invention increases the availability of band width and the flexibility of the mapping mode by redefining the spending byte in the original specification, increasing the relevant portion divided by the time slot with a low cost, and the invention has a better compatibility.

Description

technical field [0001] The invention relates to an optical transmission network, in particular to a method for time slot division and overhead processing of an optical payload unit in the optical transmission network. Background technique [0002] Compared with the traditional synchronous transmission system SDH, the optical transport system OTH (Optical Transport Hierarchy) has the advantages of large cross-section granularity, transparent transmission of services, and high packaging efficiency. Especially in recent years, with the decline in the proportion of voice services and the rising trend of the proportion of data services such as Ethernet and Fiber Channel, the traditional SDH transmission system is no longer suitable for the transmission of such services. OTH gradually replaces SDH in areas such as metropolitan area and backbone transmission, and becomes a new transmission standard. [0003] The OTN (Optical Transport Network) defined by the OTH system uses OPU (O...

AI Technical Summary

Problems solved by technology

[0019] The technical problem to be solved by the present invention is to avoid the disadvantages of complex overhead definition, weak adaptability, and insufficient expansion ability in the existing division scheme, and provide a method for time slot division and overhead processing of an optical payload unit in an optical transmission network, To accommodate a variety of different client signals, improving the effectiveness of the transport layer bandwidth

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