Channel encoding method and device
The present application relates to the technical field of wireless communication, and particularly relates to a channel encoding method and device, for use to solve the problem that at present, there is no physical broadcast channel polar encoding method in a 5G scene. Embodiments of the present application relate to determining a polar mother code length according to transmission resources of a channel; performing polar encoding, according to the polar mother code length, on data needing to be transmitted over the channel to obtain target encoding data; processing the target encoding data according to the length of an actual bearer of the transmission resources; and determining, according to the processed target encoding data, encoding data needing to be transmitted over the channel. The embodiments of the present application achieve determining encoding data according to an actual transmission resource length of a channel, so that the processed encoding data can be ensured to be accurately transmitted over the channel.
1. A channel encoding method, comprising:
determining a polar mother code length according to a transmission resource of a channel;
performing polar encoding on data to be transmitted on the channel according to the polar mother code length, to obtain target encoded data;
processing the target encoded data according to an actual bearer length of the transmission resource; and
determining encoded data to be transmitted on the channel according to the processed target encoded data.
2. The method of claim 1 , wherein determining the polar mother code length according to the transmission resource of the channel, comprises:
selecting one from a set of polar mother code lengths according to the actual bearer length of the transmission resource;
wherein the actual bearer length of the transmission resource is an actual bearer length of a part of or all Orthogonal Frequency Division Multiplexing, OFDM, symbols of the channel.
3. The method of claim 2 , wherein when the polar mother code length is determined according to the actual bearer length of the part of OFDM symbols of the channel;
the processing the target encoded data according to the actual bearer length of the transmission resource, comprises:
performing a punching or shortening operation on the target encoded data according to the actual bearer length of the part of OFDM symbols when the actual bearer length of the part of OFDM symbols is no larger than the polar mother code length; or
performing a repeating operation on the target encoded data according to the actual bearer length of the part of OFDM symbols when the actual bearer length of the part of OFDM symbols is larger than the polar mother code length.
4. The method of claim 3 , wherein the determining encoded data to be transmitted on the channel according to the processed target encoded data, comprises:
taking the processed target encoded data as encoded data transmitted on the part of OFDM symbols, and copying the encoded data transmitted on the partial OFDM symbols onto other OFDM symbols of the channel.
5. The method of claim 3 , wherein the part of OFDM symbols is one OFDM symbol of the channel.
6. The method of claim 5 , wherein payloads with different lengths in the channel use a same polar mother code length.
7. The method of claim 2 , wherein when the polar mother code length is determined according to the actual bearer length of all the OFDM symbols of the channel;
the processing the target encoded data according to an actual bearer length of the transmission resources, comprises:
performing a punching or shortening operation on the target encoded data according to the actual bearer length of all the OFDM symbols when the actual bearer length of all the OFDM symbols is no larger than the polar mother code length; or
performing a repeating operation on the target encoded data according to the actual bearer length of all the OFDM symbols when the actual bearer length of all the OFDM symbols is larger than the polar mother code length.
8. The method of claim 7 , wherein the determining encoded data to be transmitted on the channel according to the processed target encoded data, comprises:
taking the processed target encoded data as the encoded data to be transmitted on the channel.
9. The method of claim 7 , wherein polar mother code lengths used by payloads with different lengths in the channel are same or different.
10. A channel encoding device, comprising:
a memory configured to store program instructions; and
a processor configured to invoke the program instructions to:
determine a polar mother code length according to a transmission resource of a channel;
perform polar encoding on data to be transmitted on the channel according to the polar mother code length, to obtain target encoded data;
process the target encoded data according to an actual bearer length of the transmission resource;
determine encoded data to be transmitted on the channel according to the processed target encoded data.
11. The device of claim 10 , wherein the processor is configured to:
select one from a set of polar mother code lengths according to the actual bearer length of the transmission resource; wherein the actual bearer length of the transmission resource is an actual bearer length of a part of or all OFDM symbols of the channel.
12. The device of claim 11 , wherein when the processor determines the polar mother code length according to the actual bearer length of the part of OFDM symbols of the channel;
the processor is configured to:
perform a punching or shortening operation on the target encoded data according to the actual bearer length of the part of OFDM symbols when the actual bearer length of the part of OFDM symbols is no larger than the polar mother code length; or
perform a repeating operation on the target encoded data according to the actual bearer length of the part of OFDM symbols when the actual bearer length of the part of OFDM symbols is larger than the polar mother code length.
13. The device of claim 12 , wherein the processor is configured to:
take the processed target encoded data as encoded data transmitted on the part of OFDM symbols, and copy the encoded data transmitted on the part of OFDM symbols onto other OFDM symbols of the channel.
14. The device of claim 12 , wherein the part of OFDM symbols is one OFDM symbol of the channel.
15. The device of claim 14 , wherein payloads with different lengths in the channel use a same polar mother code length.
16. The device of claim 11 , wherein when the processor determines the polar mother code length according to the actual bearer length of all the OFDM symbols of the channel;
the processor is configured to:
perform a punching or shortening operation on the target encoded data according to the actual bearer length of all the OFDM symbols when the actual bearer length of all the OFDM symbols is no larger than the polar mother code length; or
perform a repeating operation on the target encoded data according to the actual bearer length of all the OFDM symbols when the actual bearer length of all the OFDM symbols is larger than the polar mother code length.
17. The device of claim 16 , wherein the processor is configured to:
take the processed target encoded data as the encoded data to be transmitted on the channel.
18. The device of claim 16 , wherein polar mother code lengths used by payloads with different lengths in the channel are same or different.
19. A non-transitory computer storage medium, storing computer executable instructions which are configured to cause the computer to perform the method of claim 1 .
20. The method of claim 1 , wherein the polar mother code length is 512 bits.