Patent ID: 8693480
Filing Date: 2014-04-08
Classification: H04J

Abstract:
1. A method for transmitting client signals, a comprising: selecting, according to a rate of a client signal to be transmitted to, a corresponding low-order Optical Channel Data Unit (ODU) from a low-order ODU set comprising at least eight low-order Optical Channel Data Units having rates increased in order, wherein each of the rates increased in order is an integer multiple of a rate of a timeslot granularity of equal sized timeslots of a high-order Optical Channel Payload Unit-k (OPUk), wherein a value of k is one of the group of integer values consisting of: 2, 3 and 4; mapping the client signal to be transmitted to the corresponding low-order ODU in the low-order ODU set; mapping the corresponding low-order ODU with the client signal to one or more of the equal sized timeslots of the high-order OPUk; adding overheads to the high-order OPUk to form an Optical Channel Transport Unit (OTU), and transferring the OTU for transmission.