QUALCOMM Incorporated
ACKNOWLEDGEMENT (ACK) AND NEGATIVE ACKNOWLEDGEMENT (NACK) REPORTING FOR A PHYSICAL DOWNLINK SHARED CHANNEL (PDSCH) GRANT

Abstract:

This disclosure provides systems, methods and apparatuses for using acknowledgement or negative acknowledgement (ACK-NACK) bundling when reporting from a user equipment (UE) a bundled ACK-NACK for a plurality of physical downlink shared channels (PDSCHs) associated with a PDSCH grant. A counter downlink assignment indicator (DAT) and a total DAI may be used to track PDSCH grants that are received at the UE. The UE may detect missing PDSCHs and report ACK-NACKs for the missing PDSCHs based on the counter DAI and the total DAI. A base station (BS) may transmit the PDSCH grant associated with the plurality of PDSCHs to the UE. The BS may receive, from the UE, the bundled ACK-NACK for the plurality of PDSCHs associated with the PDSCH grant.