OPTICAL TRANSCEIVER AND DATA MAPPING METHOD USING THEREOF

• US 20160285590A1
• Filed: 06/02/2016
• Published: 09/29/2016
• Est. Priority Date: 12/02/2013
• Status: Active Grant

• Current Assignee: OE Solutions America, Inc (Oe Solutions Co., Ltd.)
• Original Assignee: OE Solutions America, Inc (Oe Solutions Co., Ltd.)
• Inventors: SEO, Wanseok, KIM, Jong Ho, PARK, Moon Soo, YU, Joon Sang
• Granted Patent: US 10,044,468 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 10/40 Transceivers
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end

Abstract

Disclosed is an optical transceiver. The optical transceiver includes a decoder for decoding an 8B10B line-coded signal, a data mapper for separating the decoded signal into block units and securing extra memory capacity by mapping a data code and a block information code onto each of the separated blocks, and an FEC encoding unit for creating Forward Error Correction (FEC) data and mapping the FEC data onto the extra memory capacity.

Claims

1. An optical transceiver comprising:

a decoder for decoding an 8B10B line-coded signal;

a data mapper for separating the decoded signal into block units and securing extra memory capacity by mapping a data code and a block information code onto each of the separated blocks; and

an FEC encoding unit for creating a Forward Error Correction (FEC) data and mapping the FEC data onto the extra memory capacity.

2. The optical transceiver according to claim 1, wherein the number of bits of the extra memory capacity is determined as a value calculated by subtracting the number of bits of the data code and the block information code from the total number of bits of each of the blocks before decoding.

3. The optical transceiver according to claim 1, further comprising a framer for forming a frame by mapping a plurality of blocks, onto which the Forward Error Correction data is mapped, to a GFP frame.

4. The optical transceiver according to claim 2, wherein the framer creates an overhead signal and maps the overhead signal onto the extra memory capacity.

5. The optical transceiver according to claim 1, wherein the data mapper separates the decoded signal into block units by combining eight 8-bit signals and secures the extra memory capacity by mapping sixty four bits of data code and one to fifteen bits of block information code onto each of the separated blocks.

6. The optical transceiver according to claim 5, wherein the data mapper separates the decoded signal into block units by combining eight 8-bit signals and secures fifteen bits of extra memory capacity by mapping sixty four bits of data code and one bit of block information code onto each of the separated blocks.

7. The optical transceiver according to claim 5, wherein the data mapper separates the decoded signal into block units by combining eight 8-bit signals and secures ten bits of extra memory capacity by mapping sixty four bits of data code and six bits of block information code onto each of the separated blocks.

8. The optical transceiver according to claim 1, further comprising a demultiplexer for splitting the 8B10B line-coded signal into a plurality of parallel signals and transferring the split signals to the decoder.

9. The optical transceiver according to claim 3, further comprising a multiplexer for multiplexing the frames into a serial signal.

11. The data mapping method according to claim 9, wherein the number of bits of the extra memory capacity is determined as a value calculated by subtracting the number of bits of the data code and the block information code from the total number of bits of each of the blocks before decoding.

13. The data mapping method according to claim 11, wherein the framing step includes a step of creating an overhead signal and mapping the overhead signal onto the extra memory capacity.

20. The optical transceiver of claim 1, wherein the data mapper is further for inserting a block information code in each block unit, the block information code comprising information on at least one of:

a number of data bytes or control bytes.

10. A data mapping method in an optical communication system comprising:

a decoding step of decoding an 8B10B line-coded signal;

a data mapping step of separating the decoded signal into block units and securing extra memory capacity by mapping a data code and a block information code onto each of the separated blocks; and

an FEC encoding step of creating a Forward Error Correction (FEC) data and mapping the FEC data onto the extra memory capacity.

12. The data mapping method according to claim 10, further comprising a framing step of forming a frame by mapping a plurality of blocks, onto which the Forward Error Correction data is mapped, to a GFP frame.

14. The data mapping method according to claim 10, further comprising, before the decoding step, the step of splitting the 8B10B line-coded signal into a plurality of parallel signals.

15. The data mapping method according to claim 12, further comprising the step of multiplexing the frames into a serial signal.

16. The data mapping method according to claim 10, wherein the data mapping step separates the decoded signal into block units by combining eight 8-bit signals and secures the extra memory capacity by mapping sixty four bits of data code and one to fifteen bits of block information code onto each of the separated blocks.

17. The data mapping method according to claim 16, wherein the data mapping step separates the decoded signal into block units by combining eight 8-bit signals and secures fifteen bits of extra memory capacity by mapping sixty four bits of data code and one bit of block information code onto each of the separated blocks.

18. The data mapping method according to claim 16, wherein the data mapping step separates the decoded signal into block units by combining eight 8-bit signals and secures ten bits of extra memory capacity by mapping sixty four bits of data code and six bits of block information code onto each of the separated blocks.

19. The data mapping method according to claim 16, wherein the data mapping step further comprises inserting a block information code in each block unit, the block information code comprising information on at least one of:

a number of data bytes or control bytes.