Method, system, and apparatus for retransmission in wireless communications

An apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform operations including:
• transmitting an initial transmission comprising multiple code blocks (CBs);
• and
• transmitting a retransmission comprising one or more cross-CB coded blocks, wherein the cross-CB coded blocks comprise a first cross-CB coded block, and the first cross-CB coded block is generated by encoding, according to a low density parity check (LDPC) code, a part of information bits of the multiple CBs, and wherein a code rate of the retransmission is lower than a code rate of the initial transmission.

An apparatus comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform operations including:
• receiving an initial transmission comprising multiple code blocks (CBs);
• and
• receiving a retransmission comprising one or more cross-CB coded blocks, wherein the cross-CB coded blocks comprises a first cross-CB coded block, and the first cross-CB coded block is generated by encoding, according to a low density parity check (LDPC) code, a part of information bits of the multiple CBs, and wherein a code rate of the retransmission is lower than a code rate of the initial transmission.