Title:
DATA CODING AND DECODING METHOD AND DEVICE, OLT, ONU, AND PON SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/105471
Kind Code:
A1
Abstract:
Disclosed are a data coding and decoding method and device in a PON system. The method comprises: collecting N data blocks in a physical coding sub-layer and combing the data blocks to generate valid data; generating a payload, the payload comprising the valid data; performing FEC on the payload to generate a checking part; and further generating a codeword structure, the codeword structure comprising the valid data, the checking part, and a synchronization header distributed independently from each other. The synchronization header may be positioned at the head or tail of the codeword structure, an FEC code pattern may be LDPC(18493,15677), and a line code may be 256B/257B. Therefore, quick synchronization can be implemented, and the bandwidth efficiency and error correcting capability can be improved. The codeword structure further comprises a filling part. The valid data and the filling part form the payload. Hence, all FEC patterns and all line codes can be effectively compatible and adapted. The filling part may be used as the synchronization header, and may also be used for indicating the length of the codeword structure, the length of the payload, or the like.
Inventors:
JING LEI (CN)
GAO BO (CN)
NIE SHIWEI (CN)
LIU DEKUN (CN)
GAO BO (CN)
NIE SHIWEI (CN)
LIU DEKUN (CN)
Application Number:
PCT/CN2018/118665
Publication Date:
June 06, 2019
Filing Date:
November 30, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L1/00
Foreign References:
| CN101312349A | 2008-11-26 | |||
| CN102891731A | 2013-01-23 | |||
| CN101455019A | 2009-06-10 | |||
| CN1398064A | 2003-02-19 |
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