Variable forward error correction for optical communication links
AssigneeCisco Technology, Inc.
InventorsOrnan Gerstel, Loukas Paraschis, Peter Lothberg
Life of this patent
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Abstract
A method and system for setting a variable forward error correction overhead in an optical transport network frame for an optical link at a node are disclosed. In one embodiment, a method includes selecting a forward error correction overhead, signaling an optical node the selected forward error correction overhead, and setting the forward error correction overhead in the optical network transport frame for use in transmission of data over the optical link. In one embodiment, the forward error correction overhead is complementary to the data payload to maintain total transmission rate.
Claims18
A method for setting a variable forward error correction overhead in an optical transport network frame for an optical link at a first node, comprising:
- selecting a forward error correction overhead at the first node;
- signaling an optical node said selected forward error correction overhead;
- receiving a forward error correction overhead selected by the optical node and comparing it to said forward error correction overhead selected at the first node;
- and
- setting said forward error correction overhead in the optical network transport frame for use in transmission of data over the optical link.
An apparatus for setting a variable forward error correction overhead in an optical transport network frame for an optical link, comprising:
- a variable forward error correction device configured to select a forward error correction overhead for use in transmission of data over the optical link;
- and
- a transmitter operable to signal an optical node said selected forward error correction overhead;
- wherein the variable forward error correction device is further configured to select said forward error correction overhead from a list of forward error correction overheads each having an associated minimum bit error rate prior to forward error correction and an associated maximum bit error rate after forward error correction.
An apparatus for setting a variable forward error correction overhead in an optical transport network frame for an optical link at a node, comprising:
- means for selecting a forward error correction overhead;
- means for signaling an optical node said selected forward error correction overhead;
- means for receiving a forward error correction overhead selected by the optical node and comparing it to said forward error correction overhead selected at the first node;
- and
- means for setting said forward error correction overhead in said optical network transport frame for use in transmission of data over the optical link.
Dependencies are inferred from the claim text.