Apparatuses and methods for retransmissions using cross-transport block check blocks

An apparatus comprising:

• at least one processor;
• and
• memory coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the apparatus to perform operations including:
• transmitting, to a receiver node, an initial transmission of a first data block having a first plurality of code blocks, and another initial transmission of a second data block having another plurality of code blocks;
• and
• transmitting a retransmission to the receiver node, the retransmission including at least one cross-block check block from a first set of cross-block check blocks generated using a first partition of code blocks from the first data block and a first partition of code blocks from the second data block, the retransmission further including at least one cross-block check block from a second set of cross-block check blocks generated using a second partition of code blocks from the first data block and a second partition of code blocks from the second data block.

An apparatus comprising:

• at least one processor;
• and
• memory coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the apparatus to perform operations including:
• receiving, from a transmitter node, an initial transmission of a first data block having a first plurality of code blocks, and another initial transmission of a second data block having another plurality of code blocks;
• and
• receiving a retransmission from the transmitter node, the retransmission including at least one cross-block check block from a first set of cross-block check blocks generated using a first partition of code blocks from the first data block and a first partition of code blocks from the second data block, the retransmission further including at least one cross-block check block from a second set of cross-block check blocks generated using a second partition of code blocks from the first data block and a second partition of code blocks from the second data block.