US 12,009,918 B2
Data processing method and device
Xuming Wu, Wuhan (CN); Shiwei Nie, Dongguan (CN); and Xu Wang, Wuhan (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Sep. 8, 2022, as Appl. No. 17/940,209.
Application 17/940,209 is a continuation of application No. PCT/CN2020/132746, filed on Nov. 30, 2020.
Claims priority of application No. 202010157877.7 (CN), filed on Mar. 9, 2020.
Prior Publication US 2023/0006766 A1, Jan. 5, 2023
Int. Cl. H04L 1/00 (2006.01); H04L 7/00 (2006.01)
CPC H04L 1/0045 (2013.01) [H04L 7/0075 (2013.01)] 20 Claims
OG exemplary drawing
 
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.