Method and apparatus for transporting client signal in optical transport network

  • US 8,406,236 B2
  • Filed: 05/17/2011
  • Issued: 03/26/2013
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. A method for transmitting a client signal in an optical transport network (OTN), comprising:

  • acquiring the client signal;

    extracting a client signal clock from the client signal;

    generating a client signal byte number Cn transported in an OTN frame period according to a client signal clock and a system clock;

    if the Cn transported in the OTN frame needs to be increased, reversing, values of a first series of bit positions of a second area in an optical channel payload unit-k (OPUk) of the OTN frame, and filling values of a second series of bit positions of the second area in the OPUk with a Cn filled in a previous OTN frame;

    if the Cn transported in the OTN frame needs to be decreased, reversing, values of the second series of bit positions of the second area in the OPUk overhead field of the OTN frame, and filling values of the first series of bit positions of the second area in the OPUk with the Cn filled in the previous OTN frame.

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