US 11,902,032 B2
Methods and apparatus for HARQ enhancement
Aata El Hamss, Laval (CA); Paul Marinier, Brossard (CA); J. Patrick Tooher, Montreal (CA); Faris Alfarhan, Montreal (CA); and Ghyslain Pelletier, Montreal (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Appl. No. 17/265,602
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
PCT Filed Aug. 1, 2019, PCT No. PCT/US2019/044692
§ 371(c)(1), (2) Date Feb. 3, 2021,
PCT Pub. No. WO2020/033237, PCT Pub. Date Feb. 13, 2020.
Claims priority of provisional application 62/788,424, filed on Jan. 4, 2019.
Claims priority of provisional application 62/715,458, filed on Aug. 7, 2018.
Prior Publication US 2021/0328728 A1, Oct. 21, 2021
Int. Cl. H04L 1/1829 (2023.01); H04L 1/1812 (2023.01)
CPC H04L 1/1864 (2013.01) [H04L 1/1812 (2013.01); H04L 1/1854 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method implemented by a wireless transmit/receive unit (WTRU) for wireless communications, the method comprising:
determining, for each of a plurality of downlink (DL) transmissions, a respective codebook process from a set of codebook processes based on a first indication associated with a respective codebook process index, wherein each of the plurality of DL transmissions is associated with one or more hybrid automatic repeat request (HARQ) feedback bits;
receiving, in downlink control information (DCI), a second indication to transmit a set of HARQ feedback bits using one or more uplink (UL) control resources, wherein the second indication comprises at least a codebook process index and a HARQ retransmission indicator;
determining one or more DL transmissions from the plurality of DL transmissions based on: 1) the respective codebook process determined for each respective DL transmission, 2) the received codebook process index, and 3) the received HARQ retransmission indicator; and
transmitting the set of HARQ feedback bits associated with the determined one or more DL transmissions using the one or more UL control resources.