Method and apparatus for low-density parity-check (LDPC) coding

A wireless transmit/receive unit (WTRU) comprising:

• a transceiver;
• and
• a processor,
• wherein the processor and the transceiver are configured to receive downlink control information (DCI),
• wherein the processor and the transceiver are further configured to determine a target coding rate for a Physical Uplink Shared Channel (PUSCH) transmission based at least in part on information contained in the DCI,
• wherein the processor is configured to generate a transport block (TB) for transmission on the PUSCH using the determined target coding rate, wherein the TB comprises a plurality of payload bits,
• wherein the transceiver and the processor are further configured to transmit at least one code block,
• wherein each code block comprises an integer number of bits,
• wherein the integer number of bits comprises at least some of the plurality of payload bits of the TB,
• wherein each code block is encoded using one of a first low-density parity-check (LDPC) base graph (BG) or a second LDPC BG, wherein the one of the first LDPC BG or the second LDPC BG is selected based on a number of the plurality of payload bits of the TB and the determined target coding rate, and
• wherein number of the at least one code block is based on a maximum code block size of the selected LDPC BG.