Encoding method, decoding method, and optical module

1 . An encoding method carried out by an optical module comprising at least one processor, the method comprising:

obtaining an optical transmission mode used for signal transmission;

receiving a first signal on which outer-code encoding has been performed;

determining, based on the optical transmission mode, an inner-code encoding scheme to be used by the optical module to perform inner-code encoding on the first signal;

performing, by using the inner-code encoding scheme, inner-code encoding on the first signal to obtain a second signal; and

outputting the second signal,

wherein the optical module comprises:

a selection subassembly, and

a component code encoder; and

wherein the performing the inner-code encoding on the first signal comprises:

selecting, by the selection subassembly, a target candidate signal from a plurality of candidate signals according to the inner-code encoding scheme,

providing the target candidate signal to the component code encoder, and

performing, by the component code encoder based on the target candidate signal, inner-code encoding on the first signal.

2 . The method according to claim 1 , wherein the obtaining the optical transmission mode used for signal transmission comprises:

receiving indication information from a transmitting device, and determining the optical transmission mode based on the indication information.

3 . The method according to claim 2 , wherein the indication information of the transmitting device is obtained through Ethernet auto-negotiation between the transmitting device and a receiving device, or the indication information of the transmitting device is obtained from a network controller.

4 . The method according to claim 1 , wherein the obtaining the optical transmission mode used for the signal transmission comprises:

determining the optical transmission mode based on a write operation performed by the control device on an identifier that indicates the optical transmission mode.

5 . The method according to claim 1 , wherein the optical transmission mode comprises a point-to-point optical transmission mode or a point-to-multipoint optical transmission mode; in the point-to-point optical transmission mode, the second signal is transmitted from a transmitting device to a receiving device by using a single channel; and in the point-to-multipoint optical transmission mode, the second signal is transmitted from the transmitting device to the receiving device in a single channel-to-multichannel manner.

6 . The method according to claim 5 , wherein the determining, based on the optical transmission mode, the inner-code encoding scheme to be used by the optical module to perform the inner-code encoding on the first signal comprises:

querying a correspondence between the optical transmission mode and an encoding scheme based on the optical transmission mode, to obtain the inner-code encoding scheme,

wherein the correspondence comprises: the point-to-point optical transmission mode corresponds to a spatially coupled encoding scheme, and the point-to-multipoint optical transmission mode corresponds to a block algebraic encoding scheme.

7 . The method according to claim 6 , wherein the spatially coupled encoding scheme comprises: encoding by using a zipper code; and

wherein the block algebraic encoding scheme comprises: encoding by using a Hamming code or a BCH code.

8 . An inner-code decoding method carried out by an optical module comprising at least one processor, the method comprising:

obtaining an optical transmission mode used for signal transmission;

receiving a first signal on which inner-code decoding is to be performed;

determining based on the optical transmission mode, an inner-code decoding scheme to be used by the optical module to perform the inner-code decoding on the first signal;

performing, by using the inner-code decoding scheme, the inner-code decoding on the first signal to obtain a second signal; and

outputting the second signal, so as to perform outer-code decoding on the first signal on which the inner-code decoding has been performed,

wherein the optical module comprises:

a selection subassembly, and

a component code decoder; and

wherein the performing the inner-code decoding on the first signal by using the inner-code decoding scheme comprises:

selecting, by the selection subassembly, a target candidate signal from a plurality of candidate signals according to the inner-code decoding scheme,

providing the target candidate signal to the component code decoder; and

performing, by the component code decoder, inner-code decoding on the first signal based on the target candidate signal.

9 . The method according to claim 8 , wherein the obtaining the optical transmission mode used for signal transmission comprises:

receiving indication information from a receiving device, and

determining the optical transmission mode based on the indication information.

10 . The method according to claim 9 , wherein the indication information of the receiving device is obtained through Ethernet auto-negotiation between the receiving device and a transmitting device, or the indication information of the receiving device is obtained from a network controller.

11 . The method according to claim 8 , wherein the obtaining the optical transmission mode used for the signal transmission comprises:

determining the optical transmission mode based on a write operation performed by the control device on an identifier that indicates the optical transmission mode.

12 . The method according to claim 8 , wherein the optical transmission mode comprises a point-to-point optical transmission mode or a point-to-multipoint optical transmission mode; in the point-to-point optical transmission mode, the signal is transmitted from the transmitting device to the receiving device by using a single channel; and in the point-to-multipoint optical transmission mode, the signal is transmitted from the transmitting device to the receiving device in a single channel-to-multichannel manner.

13 . An optical module comprising one or more processors configured to cause the optical module to carry out operations of:

receiving a first signal on which outer-code encoding has been performed;

obtaining an optical transmission mode used for signal transmission;

determining, based on the optical transmission mode, an inner-code encoding scheme to be used by the optical module to perform inner-code encoding on the first signal;

performing, by using the inner-code encoding scheme, inner-code encoding on the first signal to obtain a second signal; and

outputting the second signal,

wherein the optical module comprises:

a selection subassembly, and

a component code encoder; and

wherein the performing the inner-code encoding on the first signal comprises:

selecting, by the selection subassembly, a target candidate signal from a plurality of candidate signals according to the inner-code encoding scheme,

providing the target candidate signal to the component code encoder, and

performing, by the component code encoder based on the target candidate signal, inner-code encoding on the first signal.

14 . The optical module according to claim 13 , wherein wherein the obtaining the optical transmission mode used for the signal transmission comprises:

receiving indication information from a transmitting device, and

determining the optical transmission mode based on the indication information.

15 . The optical module according to claim 14 , wherein the indication information of the transmitting device is obtained through Ethernet auto-negotiation the transmitting device and a receiving device, or the indication information of the transmitting device is obtained from a network controller.

16 . The optical module according to claim 13 , wherein the obtaining the optical transmission mode used for the signal transmission comprises:

determining the optical transmission mode based on a write operation performed by the control device on an identifier that indicates the optical transmission mode.

17 . An optical module comprising one or more processors configured to cause the optical module to carry out the operations of:

receiving a first signal on which inner-code decoding is to be performed;

obtaining an optical transmission mode used for signal transmission;

determining, based on the optical transmission mode, an inner-code decoding scheme to be used by the optical module to perform inner-code decoding on the first signal;

performing, by using the inner-code decoding scheme, the inner-code decoding on the first signal to obtain a second signal; and

outputting the second signal, so as to perform outer-code decoding on the first signal on which the inner-code decoding has been performed,

wherein the optical module comprises:

a selection subassembly, and

a component code decoder; and

wherein the performing the inner-code decoding on the first signal by using the inner-code decoding scheme comprises:

selecting, by the selection subassembly, a target candidate signal from a plurality of candidate signals according to the inner-code decoding scheme,

providing the target candidate signal to the component code decoder; and

performing, by the component code decoder, inner-code decoding on the first signal based on the target candidate signal.

18 . The optical module according to claim 17 , wherein the one or more processors is configured to cause the optical module to:

receive indication information from a receiving device, and determine the optical transmission mode based on the indication information.

19 . The optical module according to claim 18 , wherein the indication information of the receiving device is obtained through Ethernet auto-negotiation between the receiving device and a transmitting device, or the indication information of the receiving device is obtained from a network controller.

20 . The optical module according to claim 17 , wherein the obtaining the optical transmission mode used for the signal transmission comprises:

determining the optical transmission mode based on a write operation performed by the control device on an identifier that indicates the optical transmission mode.