CPC H04L 1/0045 (2013.01) [H04L 7/0075 (2013.01)] | 20 Claims |
1. A data processing method, comprising:
entering, by an optical network unit, a pre-synchronization state in response to detecting, by the optical network unit, a physical synchronization sequence (Psync) field and a valid superframe counter (SFC) structure in a received data stream;
determining, by the optical network unit, in the received data stream, a position of a forward error correction (FEC) codeword boundary in the data stream based on a position of the Psync field;
performing an FEC codeword decoding check, wherein the Psync field is a field that matches a preset Psync, in the data stream; and
entering, by the optical network unit, a synchronization state in response to an FEC codeword in the data stream passing the decoding check.
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