Method and apparatus for providing a Gigabit Ethernet circuit pack
View Patent ↗Method and system for providing data transmission with transparency over the Gigabit Ethernet data stream includes receiving the 10 bit code with a data rate of 1,250 Mbits/second from the encoded 8B/10B data and arbitrarily selecting 9 bit codes using a look-up translation table which can fully represent the 10 bit codes received. The translated 9 bit codes with a data rate of 1,125 Mbits/second is then provided to eight STS-3 inverse multiplexer which inverse multiplexes the received codes into eight STS-3 data streams each with a data rate of 155.52 Mbits/second plus an offset Δ which are then provided to the modem for transmission to the far end via the optical transmission path.
1. A method of transporting data through a data network, comprising:
receiving encoded data comprising non-STS data;
mapping said received data to predetermined data;
inverse multiplexing said mapped predetermined data into a plurality of STS-3 signals; and
transmitting the non-STS data over the STS-3 signals in pseudo STS frames, said pseudo STS frames including a same number of bits as a standard STS frame;
wherein within each pseudo STS frame line overhead bytes and one or more path overhead bytes of a standard STS frame are replaced by stuff bytes with a fixed value.
2. The method as recited in claim 1 , wherein the non-STS data includes one or more of:
Gigabit Ethernet data;
Fibre Channel data;
variable rate high speed-RZ (VRH-RZ) data; and
variable rate very high speed (VRVH) data.
3. The method as recited in claim 1 , wherein the non-STS data is 8B/10B encoded and the predetermined data fully represents all non-redundant 8B/10B codes and at least one of each group of redundant 8B/10B codes using 9-bit codes.
4. The method as recited in claim 3 , wherein said mapping comprises querying a lookup translation table for the 9-bit codes.
5. The method as recited in claim 3 wherein said receiving further includes recovering a clock signal from said received encoded data.
6. The method as recited in claim 5 wherein said clock signal has a rate one tenth of a data rate of the non-STS data.
7. The method as recited in claim 5 wherein said inverse multiplexing includes synchronizing said inverse multiplexed predetermined data to an OC-3 clock derived from a phase locked loop, wherein the phase lock loop is configured to frequency convert the clock signal to a predetermined frequency and convert the predetermined frequency to the OC-3 clock.
8. The method as recited in claim 6 wherein the data rate of the non-STS data is greater than the aggregate data rate of the plurality of STS-3 signals.
9. An apparatus for providing data transport through a data network, comprising:
a clock recovery unit configured to receive encoded data comprising non-STS data;
a data translation unit coupled to said clock recovery unit, wherein said translation unit is configured to translate said received data to predetermined data; and
an inverse multiplexer coupled to said data translation unit, wherein said inverse multiplexer is configured to:
inverse multiplex said translated predetermined data into a plurality of STS-3 signals, whereby the non-STS data is transmitted over the STS-3 signals in pseudo STS frames, said pseudo STS frames including a same number of bits as a standard STS frame;
wherein within each pseudo STS frame, line overhead bytes and one or more path overhead bytes of a standard STS frame are replaced by stuff bytes with a fixed value.
10. The apparatus as recited in claim 9 , wherein the non-STS data includes one or more of:
Gigabit Ethernet data;
Fibre Channel data;
variable rate high speed-RZ data (VRH-RZ); and
variable rate very high speed (VRVH) data.
11. The apparatus as recited in claim 9 , wherein the non-STS data is 8B/10B encoded and the predetermined data fully represents all non-redundant 8B/10B codes and at least one of each group of redundant 8B/10B codes using 9-bit codes.
12. The apparatus as recited in claim 11 , wherein said translation unit comprises a lookup translation table.
13. The apparatus as recited in claim 11 wherein said clock recovery unit is further configured to recover a clock signal from said received encoded data.
14. The apparatus as recited in claim 13 wherein said clock signal has a rate one tenth of a data rate of the non-STS data.
15. The apparatus as recited in claim 13 wherein said inverse multiplexer is further configured to synchronize said inverse multiplexed predetermined data to an OC-3 clock derived from a phase locked loop, wherein the phase locked loop is configured to frequency convert the clock signal to a predetermined frequency and convert the predetermined frequency to the OC-3 clock.
16. The apparatus as recited in claim 14 wherein the data rate of the non-STS data is greater than the aggregate data rate of the plurality of STS-3 signals.
17. A system for providing data transport through a data network, comprising:
a first apparatus comprising:
a clock recovery unit configured to receive encoded data comprising non-STS data;
a first data translation unit coupled to said clock recovery unit, wherein said translation unit is configured to translate said received data to first predetermined data; and
an inverse multiplexer coupled to said data translation unit and configured to:
inverse multiplex said translated predetermined data into a plurality of STS-3 signals, whereby the non-STS data is transmitted over the STS-3 signals in pseudo STS frames, said pseudo STS frames including a same number of bits as a standard STS frame; and
wherein within each pseudo STS frame, line overhead bytes and one or more path overhead bytes of a standard STS frame are replaced by stuff bytes with a fixed value;
a second apparatus comprising:
a receiver configured to receive the plurality of STS-3 signals;
a plurality of queues each configured to frame align a corresponding one of the plurality of STS-3 signals;
a multiplexer configured to multiplex received data including said frame aligned signals;
a second data translation unit coupled to said multiplexer configured to translate said multiplexed data to second predetermined data; and
a serializer coupled to said second data translation unit configured to receive said translated second predetermined data and regenerate the encoded non-STS data.
18. The system as recited in claim 17 , wherein the non-STS data is includes one or more of:
Gigabit Ethernet data;
Fibre Channel data;
variable rate high speed-RZ data (VRH-VZ); and
variable rate very high speed (VRVH) data.
19. The system as recited in claim 17 , wherein the non-STS data is 8B/10B encoded and the first predetermined data fully represents all non-redundant 8B/10B codes and at least one of each group of redundant 8B/10B codes using 9-bit codes.
20. The system as recited in claim 19 ;
wherein said first data translation unit comprises a first lookup translation table; and
wherein said second data translation unit comprises a second lookup translation table.
21. The system as recited in claim 19 wherein said clock recovery unit is further configured to recover a clock signal from said received encoded data.
22. The system as recited in claim 21 wherein said clock signal has a rate one tenth of a data rate of the non-STS data.
23. The system as recited in claim 21 wherein said inverse multiplexer is further configured to synchronize said inverse multiplexed first predetermined data to an OC-3 clock derived from a phase locked loop, wherein the phase locked loop is configured to frequency convert the clock signal to a predetermined frequency and to convert the predetermined frequency to the OC-3 clock.
24. The system as recited in claim 22 wherein the data rate of the non-STS data is greater than the aggregate data rate of the plurality of STS-3 signals.
25. A method of transporting data through a data network, comprising:
receiving encoded data comprising non-STS data;
mapping said received data to first predetermined data; and
inverse multiplexing said mapped first predetermined data into a plurality of STS-3 signals, whereby the non-STS data is transmitted over the STS-3 signals in pseudo STS frames, said pseudo STS frames including a same number of bits as a standard STS frame; and
wherein within each pseudo STS frame, line overhead bytes and one or more path overhead bytes of a standard STS frame are replaced by stuff bytes with a fixed value;
receiving the transmitted plurality of STS-3 signals;
frame aligning each of the plurality of STS-3 signals;
multiplexing received data including said frame aligned signals;
mapping said multiplexed data to second predetermined data; and
regenerating the encoded non-STS data from the translated second predetermined data.
26. The method as recited in claim 25 , wherein the non-STS data includes one or more of:
Gigabit Ethernet data;
Fibre Channel data;
variable rate high speed-RZ data (VRH-RZ); and
variable rate very high speed (VRVH) data.
27. The method as recited in claim 25 , wherein the non-STS data is 8B/10B encoded and the first predetermined data fully represents all non-redundant 8B/10B codes and at least one of each group of redundant 8B/10B codes using 9-bit codes.
28. The method as recited in claim 27 ;
wherein said first mapping comprises querying a first lookup translation table for the first predetermined data; and
wherein said second mapping comprises querying a second lookup translation table for the second predetermined data.
29. The method as recited in claim 27 wherein said receiving encoded data further includes recovering a clock signal from said received encoded data.
30. The method as recited in claim 29 wherein said clock signal has a rate one tenth of a data rate of the non-STS data.
31. The method as recited in claim 29 wherein said inverse multiplexing includes synchronizing said inverse multiplexed first predetermined data to an OC-3 clock derived from a phase locked loop, wherein the phase lock loop is configured to frequency convert the clock signal to a predetermined frequency and convert the predetermined frequency to the OC-3 clock.
32. The method as recited in claim 30 wherein the data rate of the non-STS data is greater than the aggregate data rate of the plurality of STS-3 signals.