US 12,471,083 B2
Methods of HARQ codebook determination for low latency communications
Robert Baldemair, Solna (SE); Sorour Falahati, Stockholm (SE); and Ali Behravan, Stockholm (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/431,240
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Feb. 13, 2020, PCT No. PCT/IB2020/051222
§ 371(c)(1), (2) Date Aug. 16, 2021,
PCT Pub. No. WO2020/165847, PCT Pub. Date Aug. 20, 2020.
Claims priority of provisional application 62/806,514, filed on Feb. 15, 2019.
Prior Publication US 2022/0053532 A1, Feb. 17, 2022
Int. Cl. H04W 72/1273 (2023.01); H04L 1/1812 (2023.01); H04L 5/00 (2006.01); H04W 72/0446 (2023.01); H04W 72/23 (2023.01)
CPC H04W 72/1273 (2013.01) [H04L 1/1812 (2013.01); H04L 5/0053 (2013.01); H04W 72/0446 (2013.01); H04W 72/23 (2023.01)] 26 Claims
OG exemplary drawing
 
1. A method performed by a wireless device, the method comprising:
receiving, from a network node, downlink control information (DCI);
determining, based on the DCI, a first group of downlink channel sub-slots for downlink channel transmissions, the first group of downlink channel sub-slots corresponding to a group of uplink channel sub-slots and associated with one or more uplink resources in the group of uplink channel sub-slots, wherein the DCI schedules downlink transmissions in the first group of downlink channel sub-slots and each sub-slot of the first group is associated with its own DCI;
determining the one or more uplink resources based at least in part on a DCI associated with the last scheduled sub-slot of the first group of downlink channel sub-slots;
constructing a first hybrid automatic repeat request (HARQ) codebook comprising at least one of acknowledgment (ACK) and negative acknowledgement (NACK) feedback for the downlink channel transmissions scheduled in the first group of downlink channel sub-slots; and
transmitting the at least one of the ACK and NACK feedback, using the one or more uplink resources, according to the first HARQ codebook.