Method for processing data block in LDPC encoder

1. A method for a communication device processing a data block based on a low-density parity-check (LDPC) encoder, the method comprising:

receiving, from a base station (BS), information related to a code block segmentation for the data block;

generating, by the LDPC encoder, code blocks based on the information related to the code block segmentation,

wherein a size of a payload for the data block is equal to or greater than a threshold value;

performing, by the LDPC encoder, error correction based on encoding for each of the code blocks; and

transmitting, to the BS, the code blocks,

wherein the code block segmentation is based on a payload size supported by a parity check matrix (H), and

wherein the parity check matrix (H) is related to a coding rate of the LDPC encoder.

2. The method of claim 1 , wherein the code block segmentation is performed to minimize a number of the code blocks.

3. The method of claim 1 , wherein the code block segmentation is based on one of a plurality of payload sizes supported by the parity check matrix (H).

4. The method of claim 1 , further comprising:

performing rate matching or shortening, when a size of an encoded bit based on the encoding is not a size defined by the parity check matrix (H) related to the coding rate of the LDPC encoder.

5. The method of claim 4 , wherein the rate matching comprises puncturing or repetition.

6. The method of claim 1 , further comprising:

attaching a cyclic redundancy check CRC to each of the code blocks after the code block segmentation.

7. The method of claim 1 , wherein the payload is segmented into different payload sizes supported by the parity check matrix (H) related to the coding rate of the LDPC encoder.

8. A communication device for processing a data block, the communication device comprising:

a radio frequency (RF) unit to transmit and receive information;

a low-density parity-check (LDPC) encoder; and

a processor connected to the RF unit and the LDPC encoder, and configured to:

control the RF unit to receive, from a base station (BS), information related to a code block segmentation for the data block;

control the LDPC encoder to generate code blocks based on the information related to the code block segmentation,

wherein a size of a payload for the data block is equal to or greater than a threshold value;

control the LDPC encoder to perform error correction based on encoding for each of the code blocks; and

control the RF unit to transmit, to the BS, the code blocks,

wherein the code block segmentation is based on a payload size supported by a parity check matrix (H), and

wherein the parity check matrix (H) is related to a coding rate of the LDPC encoder.

9. The communication device of claim 8 , wherein the code block segmentation is performed to minimize a number of the code blocks.

10. The communication device of claim 8 , wherein the code block segmentation is based on one of a plurality of payload sizes supported by the parity check matrix (H).

11. The communication device of claim 8 , wherein the processor is further configured to control the LDPC encoder to perform rate matching or shortening, when a size of an encoded bit based on the encoding is not a size defined by the parity check matrix (H) related to the coding rate of the LDPC encoder.

12. The communication device of claim 11 , wherein the rate matching comprises puncturing or repetition.

13. The communication device of claim 8 , wherein the processor is configured to attach a cyclic redundancy check CRC to each of the code blocks after the code block segmentation.

14. The communication device of claim 8 , wherein the payload is segmented into different payload sizes supported by the parity check matrix (H) related to the coding rate of the LDPC encoder.