Selective bundling techniques for HARQ-ACK feedback

A wireless communication device operable as a base station (BS), comprising:

• one or more processors;
• one or more transceivers coupled to the one or more processors;
• and
• one or more memories coupled to the one or more processors,
• wherein the one or more processors are individually or collectively configured to cause the wireless communication device to:
• transmit to a user equipment (UE), via the one or more transceivers, an unbundled hybrid automatic repeat request acknowledgement HARQ-ACK codebook size M and a maximum HARQ-ACK codebook size N, wherein Nis greater than M;
• transmit K downlink transmissions forming a downlink message to the UE via the one or more transceivers, wherein K is greater than N;
• and
• receive, as feedback information, N-M bits of compressed feedback information for K-M of the K downlink transmissions and M bits of uncompressed feedback information for M of the K downlink transmissions, the M bits transmitted using an unbundled HARQ-ACK codebook, via the one or more transceivers;
• wherein the N-M bits of compressed feedback information is a first portion of the feedback information in compressed form and indicates whether a first portion of the downlink message was successfully decoded by the UE;
• and
• wherein the M bits of uncompressed feedback information is a second portion of the feedback information and indicates whether a second portion of the downlink message that differs from the first portion of the downlink message was successfully decoded by the UE.

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

• receiving an unbundled hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook size M and a maximum HARQ-ACK codebook size N, wherein N is greater than M;
• receiving K downlink transmissions forming a downlink message, wherein K is greater than N;
• transmitting N-M bits of compressed feedback information for K-M of the K downlink transmissions, wherein the compressed feedback information is a first portion of feedback information in compressed form, the feedback information indicating whether the K downlink transmissions were successfully decoded by the UE;
• and
• transmitting M bits of uncompressed feedback information for M of the K downlink transmissions using an unbundled HARQ-ACK codebook, wherein the uncompressed feedback information is a second portion of the feedback information that is different from the first portion of the feedback information.

A method of wireless communication operable by a base station (BS), the method comprising:

• transmitting to a user equipment (UE) an unbundled hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook size M and a maximum HARQ-ACK codebook size N, wherein N is greater than M;
• transmitting K downlink transmissions forming a downlink message to the UE, wherein K is greater than N;
• receiving, as feedback information, N-M bits of compressed feedback information for K-M of the K downlink transmissions and M bits of uncompressed feedback information for M of the K downlink transmissions, the M bits transmitted using an unbundled HARQ-ACK codebook;
• wherein the N-M bits of compressed feedback information is a first portion of the feedback information in compressed form and indicates whether a first portion of the downlink message was successfully decoded by the UE;
• and
• wherein the M bits of uncompressed feedback information is a second portion of the feedback information and indicates whether a second portion of the downlink message that differs from the first portion of the downlink message was successfully decoded by the UE.