System, method, and apparatus for mapping synchronous and asynchronous data
A method, system, and apparatus for transmitting information over an coherent optical link comprising enabling synchronous and asynchronous data sources to be mapped together into a single payload using a generic mapping system which performs decoupling of a clock from each data source, and mapping data from each data source into a tributary of an oFrame.
1. A system comprising:
a first modem; wherein the first modem contains logic enabled to map synchronous and asynchronous data sources into a single payload using a generic mapping system which decouples a clock from each data source and maps data from each data source into a tributary slot of an oFrame container; wherein a clock of each data source is enabled to be mapped to an oFrame clock; wherein n*Y+mZ Gbit/Sec of data is enabled to be mapped and multiplexed into an oFrame container; wherein n and m are integers and Y and Z are client bit rates; and
a second modem; wherein the first modem contains logic enabled to demap data sources from tributaries in an oFrame to recreate the data sources at the second modem; wherein the mapping includes remapping the clock of each data source signal to the clock of each data source signal from the oFrame clock.
2. The system of claim 1 wherein the logic of the first modem enables inserting padding data to convert variable rate data sources into fixed rate data sources.
3. The system of claim 1 wherein the oFrame includes an alignment marker (AM); wherein the AM is partitioned as an n*480b blocks; wherein the AM is used to find the oFrame block boundary.
4. The system of claim 3 wherein the oFrame includes overhead data (OH); wherein the OH is partitioned into 4×320b fields.
5. The system of claim 4 wherein a first data rate of a first data source of the data sources is larger than a second data rate of a second data source of the data sources.
6. The system of claim 4 wherein the OH is partitioned into 4×320b fields.
7. The system of claim 6 wherein each 100G tributary slot has a corresponding OH field.
8. The system of claim 3 wherein each oFrame container has an AM, padding, and overhead area every 256 rows.
9. The system of claim 1 wherein the oFrame has an AM field.
10. The system of claim 1 wherein the oFrame container is partitioned into 4 100G tributary slots; wherein the oFrame Container is enabled to contain client data selected from the group consisting of 1×400G client, 2×200G clients, 1×300 G, 1×300G plus 1×100G, and 4×100G clients.
11. An apparatus comprising:
a first modem; wherein the first modem contains logic enabled to map synchronous and asynchronous data sources into a single payload using a generic mapping system which decouples a clock from each data source and maps data from each data source into a tributary slot of an oFrame container; wherein a clock of each data source is enabled to be mapped to an oFrame clock; wherein n*Y+mZ Gbit/Sec of data is enabled to be mapped and multiplexed into an oFrame container; wherein n and m are integers and Y and Z are client bit rates; and logic enabled to demap data sources from tributaries in an oFrame to recreate the data sources at the second modem.
12. The apparatus of claim 11 wherein the logic of the first modem enables inserting padding data to convert variable rate data sources into fixed rate data sources.
13. The apparatus of claim 12 wherein the oFrame includes an alignment marker (AM); wherein the AM is partitioned as an n*480b blocks; wherein the AM is used to find the oFrame block boundary.
14. The apparatus of claim 13 wherein a first data rate of a first data source of the data sources is larger than a second data rate of a second data source of the data sources.
15. The apparatus of claim 12 wherein the oFrame includes overhead data (OH); wherein the OH is partitioned into 4×320b fields.
16. A method for transmitting information over a coherent optical link comprising:
enabling synchronous and asynchronous data sources to be mapped together into a single payload of an oFrame container using a generic mapping system; wherein n*Y+mZ Gbit/Sec of data is enabled to be mapped and multiplexed into the oFrame container; wherein n and m are integers and Y and Z are client bit rates;
decoupling-a clock from each data source;
mapping the clock to an oFrame clock; and
mapping data from each data source into a tributary slot of an oFrame container.
17. The method of claim 16 wherein the mapping inserts padding data to convert each variable rate data sources into fixed rate data sources.
18. The method of claim 16 wherein the oFrame includes an alignment marker (AM); wherein the AM is partitioned as an n*480b blocks; wherein the AM is used to find the oFrame block boundary.
19. The method of claim 18 wherein the oFrame includes overhead data; wherein the OH is partitioned into 4×320b fields.
20. The method of claim 19 wherein a first data rate of a first data source of the data sources is larger than a second data rate of a second data source of the data sources.