Data transmission method and apparatus
A disclosure of the present specification provides a method for transmitting data by a transmitter. The method may comprise the steps of: when a transport block (TB) is divided into n data blocks, adding additional information after each of the n data blocks; and adding a cyclic redundancy check (CRC) after the last additional information. Here, the CRC may be generated on the basis of the n data blocks, and the n pieces of additional information added after each of data blocks.
1. A transmitting device comprising:
at least one transceiver; and
at least one processor; and
at least one memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
generating, based on data, an information bit sequence input for a polar code; and
performing channel-encoding for the information bit sequence based on the polar code,
wherein the information bit sequence includes data blocks 0 to N−1 related to the data and parity blocks 0 to N−1 in the order of data block 0, parity block 0, data block 1, parity block 1, . . . , data block N−1, parity block N−1, where N is an integer larger than 1, and
wherein each parity block n of the parity blocks 0 to N−1 is generated based on bits included in data blocks 0 to n−1 and bits included in data block n only, among the data blocks 0 to N−1.
2. The transmitting device according to claim 1 ,
wherein the data includes the data blocks 0 to N−1.
3. The transmitting device according to claim 1 ,
wherein each parity block n of the parity blocks 0 to N−1 includes at least one cyclic redundancy check (CRC) bit.
4. The transmitting device according to claim 1 ,
wherein each parity block n of the parity blocks 0 to N−1 is a single parity bit, and
wherein the information bit sequence further includes a cyclic redundancy check (CRC) block at an end of the information bit sequence.
5. The transmitting device according to claim 1 ,
wherein each parity block n of the parity blocks 0 to N−1 includes no parity bit which is generated based on parity blocks 0 to n−1, parity blocks n+1 to N−1, and data blocks n+1 to N−1.
6. A method of performing channel-coding at a transmitting device, the method comprising:
generating, based on data, an information bit sequence input for a polar code; and
performing channel-encoding for the information bit sequence based on the polar code,
wherein the information bit sequence includes data blocks 0 to N−1 related to the data and parity blocks 0 to N−1 in the order of data block 0, parity block 0, data block 1, parity block 1, . . . , data block N−1, parity block N−1, where N is an integer larger than 1, and
wherein each parity block n of the parity blocks 0 to N−1 is generated based on bits included in data blocks 0 to n−1 and bits included in data block n only, among the data blocks 0 to N−1.
7. The method according to claim 6 ,
wherein the data includes the data blocks 0 to N−1.
8. The method according to claim 6 ,
wherein each parity block n of the parity blocks 0 to N−1 includes at least one cyclic redundancy check (CRC) bit.
9. The method according to claim 6 ,
wherein each parity block n of the parity blocks 0 to N−1 is a single parity bit, and
wherein the information bit sequence further includes a cyclic redundancy check (CRC) block at an end of the information bit sequence.
10. The method according to claim 6 ,
wherein each parity block n of the parity blocks 0 to N−1 includes no parity bit which is generated based on parity blocks 0 to n−1, parity blocks n+1 to N−1, and data blocks n+1 to N−1.
11. A receiving device comprising:
at least one transceiver;
at least one processor; and
at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations comprising:
receiving an encoded information bit sequence related to data; and
performing channel-decoding on the encoded information bit sequence based on a polar code to obtain an information bit sequence,
wherein the information bit sequence includes data blocks 0 to N−1 related to the data and parity blocks 0 to N−1 in the order of data block 0, parity block 0, data block 1, parity block 1, . . . , data block N−1, parity block N−1, where N is an integer larger than 1, and
wherein each parity block n of the parity blocks 0 to N−1 is related to bits included in data blocks 0 to n−1 and bits included in data block n only, among the data blocks 0 to N−1.
12. The receiving device according to claim 11 ,
wherein the data includes the data blocks 0 to N−1.
13. The receiving device according to claim 11 ,
wherein each parity block n of the parity blocks 0 to N−1 includes at least one cyclic redundancy check (CRC) bit.
14. The decoding receiving device according to claim 11 ,
wherein each parity block n of the parity blocks 0 to N−1 is a single parity bit, and
wherein the information bit sequence further includes a cyclic redundancy check (CRC) block at an end of the information bit sequence.
15. The receiving device according to claim 11 ,
wherein each parity block n of the parity blocks 0 to N−1 includes no parity bit which is related to parity blocks 0 to n−1, parity blocks n+1 to N−1, and data blocks n+1 to N−1.
16. A method of performing channel-decoding at a receiving device, the method comprising:
receiving an encoded information bit sequence related to data; and
performing decoding on the encoded information bit sequence based on a polar code to obtain an information bit sequence,
wherein the information bit sequence includes data blocks 0 to N−1 related to the data and parity blocks 0 to N−1 in the order of data block 0, parity block 0, data block 1, parity block 1, . . . , data block N−1, parity block N−1, where N is an integer larger than 1, and
wherein each parity block n of the parity blocks 0 to N−1 is related to bits included in data blocks 0 to n−1 and bits included in data block n only, among the data blocks 0 to N−1.
17. The method according to claim 16 ,
wherein the data includes the data blocks 0 to N−1.
18. The method according to claim 16 ,
wherein each parity block n of the parity blocks 0 to N−1 includes at least one cyclic redundancy check (CRC) bit.
19. The method according to claim 16 ,
wherein each parity block n of the parity blocks 0 to N−1 is a single parity bit, and
wherein the information bit sequence further includes a cyclic redundancy check (CRC) block at an end of the information bit sequence.
20. The method according to claim 16 ,
wherein each parity block n of the parity blocks 0 to N−1 includes no parity bit which is related to parity blocks 0 to n−1, parity blocks n+1 to N−1, and data blocks n+1 to N−1.