| 摘要 |
A method, device and system for transmitting service data on an Optical Transport Network (OTN). Wherein the method comprises: mapping the service data into a Low Order flexible Optical Channel Data Unit (LO ODUflex); multiplexing a plurality of said LO ODUflexs into High Order flexible Optical Channel Data Units (HO ODUflex); adding an FEC overhead into the HO ODUflex to make a flexible Optical Channel Transport Unit (OTUflex); splitting the OTUflex into multiple data channel signals, and modulating them onto an Orthogonal Frequency Division Multiplexing (OFDM) sub-carrier to transmit the OFDM sub-carrier. The above technical scheme can provide the OTUflex, thereby enable the network adapt the service data into flexibly changeable OTN line rate by a control protocol, which realizes transmitting service data with multiple rates to adapt the requirement that the OTN developing to the higher rate. |
