OpenFEC error marking
Systems and methods include receiving ( 51 ) blocks of data that has been Forward Error Correction (FEC) encoded via Open Forward Error Correction (OFEC) adaptation; decoding ( 52 ) the blocks of data; processing ( 53 ) checksum data that is included in padding data required in the OFEC adaptation, wherein the padding data is distributed across N rows of payload data; and determining ( 54 ) a location of any errors in the payload data based on the processed checksum data. The OFEC adaptation is for mapping the blocks of data into any of a FlexO structure, a ZR structure, and variants thereof, and the location of any errors can be used for error marking.
1. An apparatus for adapting FlexO/ZR data to Open Forward Error Correction (OFEC) blocks, the apparatus comprising circuitry configured to:
receive the FlexO/ZR data for adaptation to the OFEC blocks, and
insert the FlexO/ZR data with a plurality of checksums and padding in the OFEC blocks prior to OFEC encoding, wherein the plurality of checksums and the padding are used for the adaptation of the FlexO/ZR data to the OFEC blocks.
2. The apparatus of claim 1 , wherein the circuitry is further configured to
transmit the OFEC blocks containing the adapted FlexO/ZR data.
3. The apparatus of claim 1 , wherein the plurality of checksums are each Cyclic Redundancy Check (CRC) data.
4. The apparatus of claim 1 , wherein each of the plurality of checksums is distributed at a different location in the FlexO/ZR data.
5. The apparatus of claim 4 , wherein a respective checksum of the plurality of checksums is associated with a subset of the FlexO/ZR data.
6. The apparatus of claim 1 , wherein the plurality of checksums and the padding are used to preserve alignment of the FlexO/ZR data within the OFEC blocks.
7. The apparatus of claim 1 , wherein each of the plurality of checksums is added at one of (1) within a row in the FlexO/ZR data and (2) an end of a row in the FlexO/ZR data.
8. A method of adapting FlexO/ZR data to Open Forward Error Correction (FEC) blocks, the method comprising steps of:
receiving the FlexO/ZR data for adaptation to the OFEC blocks; and
inserting the FlexO/ZR data with a plurality of checksums and padding in the OFEC blocks prior to OFEC encoding, wherein the plurality of checksums and the padding are used for the adaptation of the FlexO/ZR data to the OFEC blocks.
9. The method of claim 8 , wherein the steps further include
transmitting the OFEC blocks containing the adapted FlexO/ZR data.
10. The method of claim 8 , wherein the plurality of checksums are each Cyclic Redundancy Check (CRC) data.
11. The method of claim 8 , wherein each of the plurality of checksums is distributed at a different location in the FlexO/ZR data.
12. The method of claim 11 , wherein a respective checksum of the plurality of checksums is associated with a subset of the FlexO/ZR data.
13. The method of claim 8 , wherein the plurality of checksums and the padding are used to preserve alignment of the FlexO/ZR data within the OFEC blocks.
14. The method of claim 8 , wherein each of the plurality of checksums is added at one of (1) within a row in the FlexO/ZR data and (2) an end of a row in the FlexO/ZR data.
15. An apparatus for processing Open Forward Error Correction (OFEC) blocks, the apparatus comprising circuitry configured to:
receive the OFEC blocks having FlexO/ZR data, a plurality of checksums, and padding therein, wherein the plurality of checksums and the padding are used to adapt the FlexO/ZR data to the OFEC blocks, prior to the OFEC blocks being received and the plurality of checksums and the padding are inserted prior to OFEC encoding, and
provide the FlexO/ZR data with the plurality of checksums and the padding removed.
16. The apparatus of claim 15 , wherein the circuitry is further configured to
process the plurality of checksums that are each distributed at a different location in the FlexO/ZR data.
17. The apparatus of claim 16 , wherein the circuitry is further configured to
responsive to an error in a checksum of the plurality of checksums, mark data in the FlexO/ZR data as errored where the data is associated with the checksum.
18. The apparatus of claim 15 , wherein the FlexO/ZR data is provided with one or more errors marked therein.
19. The apparatus of claim 15 , wherein the plurality of checksums are each Cyclic Redundancy Check (CRC).
20. The apparatus of claim 15 , wherein the plurality of checksums and the padding are used to preserve alignment of the FlexO/ZR data within the OFEC blocks.