US 12,413,993 B2
Techniques for providing channel quality feedback for enhanced reliability in wireless communications
Ahmed Elshafie, San Diego, CA (US); Yi Huang, San Diego, CA (US); and Hwan Joon Kwon, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 26, 2021, as Appl. No. 17/458,210.
Claims priority of provisional application 63/072,034, filed on Aug. 28, 2020.
Prior Publication US 2022/0070711 A1, Mar. 3, 2022
Int. Cl. H04W 24/10 (2009.01); H04L 1/00 (2006.01); H04L 1/1607 (2023.01); H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 72/23 (2023.01)
CPC H04W 24/10 (2013.01) [H04L 1/0027 (2013.01); H04L 1/0029 (2013.01); H04L 1/0031 (2013.01); H04L 1/0036 (2013.01); H04L 1/1671 (2013.01); H04L 1/1812 (2013.01); H04L 1/189 (2013.01); H04L 5/0055 (2013.01); H04L 5/0057 (2013.01); H04W 72/23 (2023.01); H04L 1/0003 (2013.01); H04L 1/0009 (2013.01); H04L 1/0026 (2013.01)] 27 Claims
OG exemplary drawing
 
15. A method for wireless communications at a user equipment (UE), comprising:
monitoring downlink resources for a transmission received on a downlink channel, wherein the transmission received on the downlink channel includes at least one of a downlink data signal or a demodulation reference signal (DMRS) received in a physical downlink shared channel (PDSCH);
measuring channel state information (CSI) of the transmission over each of multiple sub-bands of the downlink resources including measuring a first CSI of the transmission over a first sub-band of the multiple sub-bands and measuring a second CSI of the transmission over a second sub-band of the multiple sub-bands;
generating a CSI report based on the transmission, wherein the CSI report indicates the CSI for the multiple sub-bands of the downlink resources; and
transmitting a hybrid automatic repeat request (HARQ) acknowledgement or negative acknowledgement (ACK/NACK) feedback associated with the transmission received on the downlink channel along with the CSI report to a base station.
 
22. A method for wireless communications at a base station, comprising:
receiving, from a user equipment (UE), feedback for a transmission to the UE on a downlink channel, wherein the transmission includes a downlink packet transmitted in at least one of a downlink data signal or a demodulation reference signal (DMRS) received in a physical downlink shared channel (PDSCH), wherein the feedback includes a channel state information (CSI) report that indicates a first CSI of the transmission measured over a first sub-band of multiple sub-bands of downlink resources corresponding to the transmission and a second CSI of the transmission measured over a second sub-band of the multiple sub-bands;
generating, based on the feedback, a retransmission of the transmission to the UE using a transmission parameter that is based on at least one of the CSI report, characteristics of uplink signaling from the UE, or a history of CSI reports from the UE; and
transmitting, to the UE, the retransmission based on the transmission parameter.