US 11,956,082 B2
Codebook determination for tri-state HARQ-ACK feedback
Wei Yang, San Diego, CA (US); Yi Huang, San Diego, CA (US); Wanshi Chen, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Hwan Joon Kwon, San Diego, CA (US); Krishna Kiran Mukkavilli, San Diego, CA (US); and Tingfang Ji, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 9, 2021, as Appl. No. 17/343,621.
Claims priority of provisional application 63/054,108, filed on Jul. 20, 2020.
Prior Publication US 2022/0021486 A1, Jan. 20, 2022
Int. Cl. H04W 72/23 (2023.01); H04L 1/1812 (2023.01); H04W 76/28 (2018.01)
CPC H04L 1/1812 (2013.01) [H04W 72/23 (2023.01); H04W 76/28 (2018.02)] 28 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication performed at a user equipment (UE), comprising:
memory; and
at least one processor coupled to the memory, the memory and the at least one processor configured to:
determine tri-state hybrid automatic repeat request (HARQ) feedback is configured based on a downlink (DL) carrier;
generate the tri-state HARQ feedback for at least one of a received physical downlink control channel (PDCCH) or a received physical downlink shared channel (PDSCH) on the DL carrier based on the determination that the DL carrier is configured with the tri-state HARQ feedback, wherein the tri-state HARQ feedback includes a discontinuous transmission (DTX) state that indicates the received PDCCH is not successfully decoded;
determine a codebook for the tri-state HARQ feedback based on a number of PDSCH occasions for which the tri-state HARQ feedback is generated or based on a downlink assignment indicator (DAI) in a DL grant received in the PDCCH; and
transmit the generated tri-state HARQ feedback based on the codebook.