Service mapping processing method, device and system for optical transmission network

Abstract

Embodiments of the present invention provide a service mapping processing method, device and system for an optical transport network. The service mapping processing method of the optical transmission network of the present invention includes: generating mapping adaptation indication information according to the mapping granularity of the low-order optical channel data unit LO ODU to be carried, where the mapping granularity is M×g bytes, where M is the LO to be carried The number of time slots occupied by the ODU in the optical channel payload unit OPUCn, g is the mapping granularity corresponding to each time slot in the time slots occupied by the LO ODU, g is a positive integer greater than 1; according to the mapping adaptation indication information Map the LO ODU to be carried to the ODTUCn.M payload area in the optical channel data tributary unit ODTUCn.M, ODTUCn.M includes the ODTUCn.M overhead area and the ODTUCn.M payload area; encapsulate the mapping adaptation indication information into ODTUCn.M overhead area; encapsulate ODTUCn.M into optical channel transmission unit OTUCn; send OTUCn to the receiving end device. The embodiment of the present invention avoids the problem that the sending and receiving ends cannot intercommunicate because the OTUCn with different mapping granularity is adopted.

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 is the core technology of the next generation transport network, including the technical specifications of the electrical layer and the optical layer. Among them, for the technical specifications of the electrical layer, the current International Telecommunications The OTN defined by the International Telecommunication Union Telecommunications Standardization Sector (abbreviation: ITU-T) is a 4×4080 structure. 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-...

AI Technical Summary

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.

Images