Techniques for signaling compressed HARQ or retransmission information between a base station and a user equipment

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory, the instructions being executable by the processor to:
• receive, at a user equipment (UE), a transport block (TB) that includes a plurality of code block groups (CBGs);
• receive an indication of punctured resources in the TB;
• determine CBG failure information identifying a set of one or more CBGs in the TB that failed to decode at the UE;
• determine a compressed representation of the CBG failure information, the compressed representation of the CBG failure information including fewer bits of information than the CBG failure information and wherein the compressed representation of the CBG failure information is determined based at least in part on the indication of the punctured resources;
• and
• transmit, in response to receiving the TB, hybrid automatic repeat request (HARQ) information including the compressed representation of the CBG failure information.

A method for wireless communication, comprising:

• transmitting, to a user equipment (UE), a transport block (TB) that includes a plurality of code block groups (CBGs);
• transmitting, to the UE, an indication of punctured resources in the TB;
• receiving from the UE, in response to transmitting the TB, hybrid automatic repeat request (HARQ) information including a compressed representation of CBG failure information, the compressed representation of the CBG failure information identifying a set of one or more CBGs in the TB that failed to decode at the UE and wherein the compressed representation of the CBG failure information is based at least in part on the indication of the punctured resources;
• and
• determining, based at least in part on the compressed representation of the CBG failure information and a known puncturing of at least one CBG of the TB, a set of one or more CBGs in the TB to retransmit to the UE.

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory, the instructions being executable by the processor to:
• transmit, to a user equipment (UE), a transport block (TB) that includes a plurality of code block groups (CBGs);
• transmit, to the UE, an indication of punctured resources in the TB;
• receive from the UE, in response to transmitting the TB, hybrid automatic repeat request (HARQ) information including a compressed representation of CBG failure information, the compressed representation of the CBG failure information identifying a set of one or more CBGs in the TB that failed to decode at the UE and wherein the compressed representation of the CBG failure information is based at least in part on the indication of the punctured resources;
• and
• determine, based at least in part on the compressed representation of the CBG failure information and a known puncturing of at least one CBG of the TB, a set of one or more CBGs in the TB to retransmit to the UE.