Communication method for ethernet passive optical network and apparatus

A communications device, comprising:

• an obtaining unit configured to obtain link communication quality of both a first physical link and a second physical link between an optical line terminal and an optical network unit;
• a first forward error correction (FEC) encoding unit configured to perform FEC encoding on the first physical link by using a first FEC code;
• and
• a second FEC encoding unit configured to perform FEC encoding on the second physical link using a second FEC code, each of the first FEC encoding unit and the second FEC encoding unit comprising a reconciliation sublayer and a coding sublayer, wherein the reconciliation sublayer is configured to:
• form an FEC codeword stream based on one or more Ethernet frames that use an identical FEC encoding type, and send the FEC codeword stream to the physical coding sublayer, wherein the physical coding sublayer is configured to, perform a 66-bit conversion on a 64-bit code block of a control character to generate a 66-bit control code block, and place at least one 66-bit control code block separately at a start position and an end position of one or more continuous FEC codeword streams to form a continuous code block stream comprising one or more FEC codewords, wherein FEC encoding is performed on the 66-bit control code block using a third FEC code different from the first or the second FEC code, and wherein
• the link communication quality of the first physical link is higher than that of the second physical link, and encoding performance of the second FEC code is higher than that of the first FEC code.

A non-transitory computer-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:

• obtaining link communication quality of both a first physical link and a second physical link between an optical line terminal and an optical network unit;
• and
• performing forward error correction (FEC) encoding on the first physical link by using a first FEC code, and performing FEC encoding on the second physical link by using a second FEC code, comprising forming, at a reconciliation sublayer, and FEC codeword stream based on one or more Ethernet frames that use an identical FEC encoding type:
• sending the FEC codeword stream to a physical coding sublayer;
• performing, at the physical coding sublayer, a 66-bit conversion on a control character to generate a 66-bit control code block, and placing at least one 66-bit control code block separately at a start position and an end position of one or more continuous FEC codeword streams to form a continuous code block stream comprising one or more FEC codewords, wherein FEC encoding is performed on the 66-bit control code block using a third FEC code different from the first or the second FEC code, and wherein the link communication quality of the first physical link is higher than that of the second physical link, and encoding performance of the second FEC code is higher than that of the first FEC code.