Method and device for transporting and receiving client signal in optical transport network

摘要

Provided are a method and device for transporting and receiving a client signal in an optical transport network, which relate to the field of optical transport networks. The transport method includes: mapping a received client signal into a rate-variable container OTU-N, the rate of the OTU-N being N times a pre-set reference rate grade, and the numerical value N being a configurable positive integer; splitting the rate-variable container OTU-N into N optical subchannel transport units (OTUsubs) by column, the rate of each OTUsub being equal to the reference rate grade; modulating the N optical subchannel transport units (OTUsubs) onto one or more optical carriers; and sending the one or more optical carriers to one and the same optical fibre for transporting. The embodiments of the present invention map a client signal into a rate-variable container OTU-N and transport the OTU-N through one and the same optical fibre, being capable of adapting to the change of the spectral bandwidth of an optical layer, and achieving optimized configuration of bandwidth resources of an optical transport network.