Business mapping processing method of optical transport network, devices and system

Abstract

Embodiments of the invention provide a business mapping processing method of an optical transport network, devices and a system. The business mapping processing method of the optical transport network comprises following steps: generating mapping adaptation indication information according to a mapping granularity, which has M*g bytes, of a to-be-borne low-order optical channel data unit LO ODU, wherein M is a number of time gaps occupied by the to-be-borne LO ODU in an optical channel payload unit OPUCn, g is the size of the mapping granularity corresponding to each time gap in the time gaps occupied by the LO ODU, and g is a positive integer greater than 1; mapping the to-be-borne LO ODU to an ODTUCn.M payload region in an optical channel data tributary unit ODTUCn.M, wherein the ODTUCn.M comprises an ODTUCn.M overhead region and the ODTUCn.M payload region; packaging the mapping adaptation indication information into the ODTUCn.M overhead region; packing the ODTUCn.M into an corresponding optical channel transport unit OTUCn; and sending the OTUCn to receiving end equipment. According to the embodiments, the problem that intercommunication cannot be performed at receiving and sending ends due to the adopted OTUCn having different mapping granularities is prevented.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a service mapping processing method, device and system for an optical transmission network. Background technique [0002] Optical transport network (Optical transport network, referred to as: OTN) technology, as the core technology of the next generation transport network, includes the technical specifications of the electrical layer and the optical layer. Among them, for the technical specifications of the electrical layer, the International Telecommunication Union Telecommunications Standardization Abbreviation: ITU-T) The OTN that has been defined is a structure of 4×4080. However, in order to meet the needs of upper-layer Internet Protocol (Internet Protocol, IP for short) service transmission with increasing traffic, the electrical layer technology corresponding to the OTN also needs to provide a matching variable-rate OTN. At present, ITU-T is discuss...

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Problems solved by technology

[0004] Embodiments of the present invention provide a service mapping processing method, device, and system for an optical transport network, so as to solve the problem that OTUCn with different mapping granularities cannot communicate with each other at both ends of the transceiver.

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