Frame coding and optical network unit (ONU) synchronization in passive optical networks (PONs)
US12149346B2 · kind B2 · utility
0Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Oct 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/1301
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is implemented by an ONU in a 50G-PON. The method comprises receiving an encoded DS PHY frame from an OLT, the encoded DS PHY frame comprises an FEC codeword, the FEC codeword comprises an SFC field and a payload, and the SFC field and the payload are encoded with a same FEC; decoding the FEC codeword using the FEC to obtain a decoded SFC field and the payload; performing a first verification of the decoded SFC field while in a sync state of a synchronization state machine; and staying in the sync state when the first verification is successful or exiting the sync state when the first verification is unsuccessful.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.