| 摘要 |
<p>A method for transporting a client signal in an optical transport network (OTN) includes steps as follows. A client signal is acquired, and a client signal clock is extracted. A byte number Cn of the client signal transported in a current OTN frame period is generated according to the client signal clock and a system clock. If the Cn of the current OTN frame falls in a certain range, a predetermined area in an optical channel payload unit-k (OPUk) overhead field is identified as normal, and the Cn is filled in the OPUk overhead field of the current OTN frame. Meanwhile, Cn client signal bytes are mapped to an OPUk payload area of a next OTN frame, and an optical channel transport unit (OTU) including the OPUk is transmitted to the OTN network. Otherwise, the predetermined area in the OPUk overhead field of the current OTN frame is identified as abnormal, and an exception handling is executed. A corresponding apparatus is also provided. Therefore, the reliability for transporting the client byte number can be improved and an OPUk overhead byte space needed for transporting the client signal byte number can be saved.</p> |
