Hybrid automatic repeat request feedback codebook for multi-cell scheduling

A method of wireless communication performed by a user equipment (UE), comprising:

• receiving one or more physical downlink shared channel (PDSCH) communications scheduled by downlink control information (DCI);
• and
• transmitting, for the one or more PDSCH communications, hybrid automatic repeat request (HARQ) feedback using a sub-codebook of a set of sub-codebooks, wherein the sub-codebook is a single-cell scheduling sub-codebook, of the set of sub-codebooks, or a multi-cell scheduling sub-codebook, of the set of sub-codebooks, based at least in part on whether the DCI is a first format configured for scheduling the one or more PDSCH communications on a single carrier or a second format configured for scheduling the one or more PDSCH communications on a plurality of carriers.

A method of wireless communication performed by a network node, comprising:

• transmitting one or more physical downlink shared channel (PDSCH) communications scheduled by downlink control information (DCI);
• and
• receiving, for the one or more PDSCH communications, hybrid automatic repeat request (HARQ) feedback transmitted using a sub-codebook of a set of sub-codebooks, wherein the sub-codebook is a single-cell scheduling sub-codebook, of the set of sub-codebooks, or a multi-cell scheduling sub-codebook, of the set of sub-codebooks, based at least in part on whether the DCI is a first format configured for scheduling the one or more PDSCH communications on a single carrier or a second format configured for scheduling the one or more PDSCH communications on a plurality of carriers.